本發(fa)明(ming)涉及一種(zhong)(zhong)重質油(you)的(de)提(ti)升管催(cui)化(hua)裂(lie)化(hua)工藝,更具體的(de)說(shuo),涉及一種(zhong)(zhong)適(shi)用于劣質重油(you)的(de)提(ti)升管催(cui)化(hua)裂(lie)化(hua)工藝。
背景技術:
世界原(yuan)油(you)(you)(you)重(zhong)質化(hua)的(de)趨勢使(shi)得煉廠對(dui)將(jiang)重(zhong)質渣(zha)油(you)(you)(you)轉化(hua)為質輕(qing)、價高(gao)產品的(de)愿望(wang)日(ri)(ri)益(yi)高(gao)漲。流(liu)化(hua)催化(hua)裂化(hua)(FCC)是使(shi)重(zhong)質原(yuan)料(liao)改質最(zui)有(you)效(xiao)、最(zui)經濟的(de)方(fang)法之一,從而使(shi)FCC裝置(zhi)原(yuan)料(liao)摻入渣(zha)油(you)(you)(you)的(de)比(bi)例(li)日(ri)(ri)益(yi)增(zeng)加。
對催(cui)化(hua)(hua)(hua)(hua)(hua)裂(lie)化(hua)(hua)(hua)(hua)(hua)過(guo)(guo)程來說,隨著原料的(de)(de)(de)(de)變(bian)重(zhong),其殘炭值升高,在(zai)反(fan)(fan)(fan)應(ying)過(guo)(guo)程中(zhong)形成焦(jiao)(jiao)(jiao)炭;催(cui)化(hua)(hua)(hua)(hua)(hua)裂(lie)化(hua)(hua)(hua)(hua)(hua)原料變(bian)重(zhong),其多(duo)環芳(fang)烴含量(liang)也變(bian)高,最終也形成焦(jiao)(jiao)(jiao)炭;對催(cui)化(hua)(hua)(hua)(hua)(hua)裂(lie)化(hua)(hua)(hua)(hua)(hua)反(fan)(fan)(fan)應(ying)來說,擴散(san)是限(xian)制反(fan)(fan)(fan)應(ying)的(de)(de)(de)(de)控制過(guo)(guo)程,中(zhong)國石油(you)大(da)(da)(da)學(xue)的(de)(de)(de)(de)研究結果(guo)表明,典型重(zhong)油(you)的(de)(de)(de)(de)分(fen)子尺寸在(zai)1~2nm,重(zhong)油(you)分(fen)子只有在(zai)大(da)(da)(da)于30nm的(de)(de)(de)(de)孔(kong)道內傳遞才不受(shou)到(dao)擴散(san)限(xian)制,這(zhe)一(yi)結果(guo)突出支(zhi)持了重(zhong)油(you)催(cui)化(hua)(hua)(hua)(hua)(hua)材料中(zhong)大(da)(da)(da)尺寸孔(kong)道存(cun)在(zai)的(de)(de)(de)(de)必要(yao)性(xing)(xing),目前大(da)(da)(da)多(duo)數催(cui)化(hua)(hua)(hua)(hua)(hua)裂(lie)化(hua)(hua)(hua)(hua)(hua)催(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)的(de)(de)(de)(de)孔(kong)徑分(fen)布難(nan)以達到(dao)中(zhong)微孔(kong)分(fen)布的(de)(de)(de)(de)理想比例,由于受(shou)反(fan)(fan)(fan)應(ying)通道限(xian)制,中(zhong)間產(chan)物目的(de)(de)(de)(de)產(chan)物發(fa)生(sheng)(sheng)(sheng)過(guo)(guo)度裂(lie)化(hua)(hua)(hua)(hua)(hua),生(sheng)(sheng)(sheng)成焦(jiao)(jiao)(jiao)炭。焦(jiao)(jiao)(jiao)炭的(de)(de)(de)(de)大(da)(da)(da)量(liang)生(sheng)(sheng)(sheng)成,對催(cui)化(hua)(hua)(hua)(hua)(hua)裂(lie)化(hua)(hua)(hua)(hua)(hua)反(fan)(fan)(fan)應(ying)產(chan)生(sheng)(sheng)(sheng)嚴重(zhong)的(de)(de)(de)(de)影(ying)響,首先(xian),焦(jiao)(jiao)(jiao)炭覆蓋(gai)了催(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)活性(xing)(xing)中(zhong)心,使(shi)催(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)迅速失(shi)活;其次,焦(jiao)(jiao)(jiao)炭產(chan)率(lv)提高,提高了催(cui)化(hua)(hua)(hua)(hua)(hua)裂(lie)化(hua)(hua)(hua)(hua)(hua)裝(zhuang)(zhuang)置再生(sheng)(sheng)(sheng)負荷,一(yi)方面,更高溫度的(de)(de)(de)(de)苛刻(ke)再生(sheng)(sheng)(sheng),對催(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)造成更嚴重(zhong)的(de)(de)(de)(de)破壞,另(ling)一(yi)方面,受(shou)裝(zhuang)(zhuang)置熱平衡(heng)限(xian)制,降(jiang)低(di)了裝(zhuang)(zhuang)置處(chu)理量(liang);最后,由于焦(jiao)(jiao)(jiao)炭的(de)(de)(de)(de)大(da)(da)(da)量(liang)生(sheng)(sheng)(sheng)成,使(shi)有價值的(de)(de)(de)(de)目的(de)(de)(de)(de)產(chan)品收率(lv)降(jiang)低(di),明顯(xian)影(ying)響了裝(zhuang)(zhuang)置的(de)(de)(de)(de)經濟效益。降(jiang)低(di)FCC過(guo)(guo)程中(zhong)的(de)(de)(de)(de)焦(jiao)(jiao)(jiao)炭產(chan)率(lv),是煉油(you)行業普遍關(guan)注的(de)(de)(de)(de)核心問(wen)題之(zhi)一(yi)。
CN101215476A公開(kai)了(le)一種用(yong)于FCC裝置(zhi)的催化(hua)裂化(hua)抑焦增(zeng)收助劑,與催化(hua)裂化(hua)介(jie)質相容性(xing)好,加入(ru)后可以提高FCC裝置(zhi)摻渣比,提高輕質油(you)收率和降低焦炭產率。
CN101144030A公開了一種(zhong)催化(hua)裂(lie)化(hua)方法,其特征在于(yu)將一種(zhong)或多種(zhong)離子液體作為助劑添加(jia)(jia)到原料(liao)油中,加(jia)(jia)入量為占原料(liao)油重的10~10000ppm。該方 法特別能夠提高重質油轉(zhuan)化(hua)能力(li),減少油漿,增加(jia)(jia)輕質油收(shou)率(lv),抑制生(sheng)焦(jiao)。
CN1680515A公開了一種(zhong)催(cui)(cui)化(hua)(hua)(hua)裂化(hua)(hua)(hua)微爆活(huo)化(hua)(hua)(hua)劑(ji),它包(bao)含高(gao)性(xing)能的(de)(de)表面活(huo)性(xing)劑(ji)、水(shui)、催(cui)(cui)化(hua)(hua)(hua)劑(ji)活(huo)化(hua)(hua)(hua)劑(ji),在催(cui)(cui)化(hua)(hua)(hua)裂化(hua)(hua)(hua)提(ti)升管噴嘴前(qian)和原料(liao)混合,通過所含水(shui)并吸收(shou)原料(liao)中(zhong)(zhong)水(shui)性(xing)能納米(mi)級尺度的(de)(de)油(you)包(bao)水(shui)微乳化(hua)(hua)(hua)液,和高(gao)溫催(cui)(cui)化(hua)(hua)(hua)劑(ji)接觸產(chan)(chan)生微爆,提(ti)高(gao)霧化(hua)(hua)(hua)效果,產(chan)(chan)生歹活(huo)潑氫的(de)(de)碳氫碎(sui)片(pian),活(huo)性(xing)元素吸附到催(cui)(cui)化(hua)(hua)(hua)劑(ji)上(shang),提(ti)高(gao)催(cui)(cui)化(hua)(hua)(hua)劑(ji)活(huo)性(xing),降低催(cui)(cui)化(hua)(hua)(hua)劑(ji)污(wu)染,達到提(ti)高(gao)了汽油(you)+輕柴油(you)+液化(hua)(hua)(hua)氣(qi)收(shou)率(lv)(lv)、丙烯收(shou)率(lv)(lv)、乙烯+丙烯+總丁烯產(chan)(chan)率(lv)(lv)、干氣(qi)中(zhong)(zhong)硫化(hua)(hua)(hua)氫含量(liang),和降低焦炭產(chan)(chan)率(lv)(lv)、氫氣(qi)產(chan)(chan)率(lv)(lv)、氫甲烷(wan)、降低汽油(you)中(zhong)(zhong)硫醇含量(liang)的(de)(de)目的(de)(de)。
CN101171063A公開了分(fen)段(duan)轉(zhuan)化(hua)與(yu)分(fen)子(zi)分(fen)離相結(jie)合的(de)(de)FCC方(fang)法,該專利主(zhu)要(yao)結(jie)合了分(fen)段(duan)FCC轉(zhuan)化(hua)過程(cheng)與(yu)多環芳烴(jing)物(wu)(wu)種的(de)(de)級(ji)間分(fen)子(zi)分(fen)離。在FCC反(fan)應器的(de)(de)提(ti)升器中和(he)較(jiao)高(gao)的(de)(de)反(fan)應區的(de)(de)選擇性分(fen)子(zi)分(fen)離一起提(ti)高(gao)柴油(you)品(pin)質餾出物(wu)(wu)的(de)(de)產量(liang)。但該工(gong)(gong)藝(yi)(yi)中,苛(ke)刻度(du)較(jiao)低的(de)(de)反(fan)應區,其反(fan)應溫度(du)較(jiao)高(gao),在苛(ke)刻度(du)較(jiao)高(gao)的(de)(de)反(fan)應區,其原料為塔底原料經脫芳后貧(pin)芳物(wu)(wu)料,該工(gong)(gong)藝(yi)(yi)降低焦炭作用不(bu)顯著,且催化(hua)劑(ji)與(yu)工(gong)(gong)藝(yi)(yi)效果不(bu)佳。
CN200410007518.4涉及(ji)一(yi)(yi)種催(cui)化(hua)(hua)(hua)(hua)(hua)(hua)裂化(hua)(hua)(hua)(hua)(hua)(hua)方法(fa)(fa)以(yi)及(ji)用(yong)于(yu)該(gai)方法(fa)(fa)的(de)(de)(de)裝(zhuang)置(zhi)。具體而言(yan),本發明提(ti)供一(yi)(yi)種催(cui)化(hua)(hua)(hua)(hua)(hua)(hua)裂化(hua)(hua)(hua)(hua)(hua)(hua)方法(fa)(fa),該(gai)方法(fa)(fa)包括:1)在第(di)(di)一(yi)(yi)提(ti)升(sheng)(sheng)管(guan)中(zhong)將原(yuan)料油(you)進(jin)行(xing)(xing)小于(yu)1.5秒的(de)(de)(de)催(cui)化(hua)(hua)(hua)(hua)(hua)(hua)裂化(hua)(hua)(hua)(hua)(hua)(hua),并將所(suo)得物流送入第(di)(di)一(yi)(yi)分離裝(zhuang)置(zhi);2)將來自(zi)第(di)(di)一(yi)(yi)分離裝(zhuang)置(zhi)的(de)(de)(de)所(suo)得回煉(lian)油(you)進(jin)行(xing)(xing)小于(yu)1.5秒的(de)(de)(de)催(cui)化(hua)(hua)(hua)(hua)(hua)(hua)裂化(hua)(hua)(hua)(hua)(hua)(hua),并將所(suo)得物流送入第(di)(di)一(yi)(yi)分離裝(zhuang)置(zhi);以(yi)及(ji),3)將來自(zi)第(di)(di)一(yi)(yi)分離裝(zhuang)置(zhi)的(de)(de)(de)所(suo)得粗(cu)汽油(you)和/或任選的(de)(de)(de)柴油(you)進(jin)行(xing)(xing)催(cui)化(hua)(hua)(hua)(hua)(hua)(hua)反應,其中(zhong)第(di)(di)一(yi)(yi)至(zhi)三(san)根提(ti)升(sheng)(sheng)管(guan)中(zhong)的(de)(de)(de)反應條件(jian)與所(suo)用(yong)的(de)(de)(de)催(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑根據該(gai)催(cui)化(hua)(hua)(hua)(hua)(hua)(hua)裂化(hua)(hua)(hua)(hua)(hua)(hua)方法(fa)(fa)的(de)(de)(de)產物需(xu)要進(jin)行(xing)(xing)選擇,并分別形成用(yong)于(yu)第(di)(di)一(yi)(yi)至(zhi)三(san)根提(ti)升(sheng)(sheng)管(guan)的(de)(de)(de)催(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑再生(sheng)和循環系(xi)統,從(cong)而有效改善(shan)催(cui)化(hua)(hua)(hua)(hua)(hua)(hua)裂化(hua)(hua)(hua)(hua)(hua)(hua)的(de)(de)(de)產品分布(bu),提(ti)高產品質量。該(gai)發明采(cai)用(yong)三(san)根提(ti)升(sheng)(sheng)管(guan)聯合生(sheng)產方式(shi)增加了(le)操(cao)作的(de)(de)(de)難度(du),且采(cai)用(yong)該(gai)方法(fa)(fa)的(de)(de)(de)催(cui)化(hua)(hua)(hua)(hua)(hua)(hua)裂化(hua)(hua)(hua)(hua)(hua)(hua)實施例所(suo)產生(sheng)焦炭在8%以(yi)上(shang)。
CN101993723A公開了(le)一種劣(lie)(lie)質(zhi)重(zhong)油(you)(you)改(gai)(gai)質(zhi)的(de)(de)方法(fa),包括下述(shu)步驟:(a)來自(zi)再(zai)(zai)生(sheng)器(qi)(qi)(6)的(de)(de)再(zai)(zai)生(sheng)催(cui)(cui)(cui)化(hua)(hua)(hua)劑(ji)(ji)進(jin)(jin)(jin)(jin)入(ru)(ru)(ru)催(cui)(cui)(cui)化(hua)(hua)(hua)裂化(hua)(hua)(hua)提(ti)(ti)升管反(fan)(fan)應(ying)(ying)(ying)(ying)器(qi)(qi)(4)與(yu)催(cui)(cui)(cui)化(hua)(hua)(hua)裂化(hua)(hua)(hua)進(jin)(jin)(jin)(jin)料(C)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)催(cui)(cui)(cui)化(hua)(hua)(hua)裂化(hua)(hua)(hua)反(fan)(fan)應(ying)(ying)(ying)(ying),反(fan)(fan)應(ying)(ying)(ying)(ying)結束后(hou)(hou),反(fan)(fan)應(ying)(ying)(ying)(ying)物流(liu)經沉降分(fen)(fen)離(li)(li),分(fen)(fen)離(li)(li)出(chu)催(cui)(cui)(cui)化(hua)(hua)(hua)裂化(hua)(hua)(hua)反(fan)(fan)應(ying)(ying)(ying)(ying)生(sheng)成油(you)(you)氣(qi)(A)和(he)待(dai)生(sheng)催(cui)(cui)(cui)化(hua)(hua)(hua)劑(ji)(ji);(b)分(fen)(fen)離(li)(li)出(chu)的(de)(de)待(dai)生(sheng)催(cui)(cui)(cui)化(hua)(hua)(hua)劑(ji)(ji)經第一沉降器(qi)(qi)汽(qi)提(ti)(ti)段(3)水(shui)蒸汽(qi)汽(qi)提(ti)(ti)后(hou)(hou)全(quan)部進(jin)(jin)(jin)(jin)入(ru)(ru)(ru)催(cui)(cui)(cui)化(hua)(hua)(hua)劑(ji)(ji)混(hun)合(he)器(qi)(qi)(9)與(yu)來自(zi)再(zai)(zai)生(sheng)器(qi)(qi)(6)的(de)(de)高溫再(zai)(zai)生(sheng)催(cui)(cui)(cui)化(hua)(hua)(hua)劑(ji)(ji)在水(shui)蒸汽(qi)作用(yong)下混(hun)合(he)后(hou)(hou)作為熱載體;(c)混(hun)合(he)后(hou)(hou)的(de)(de)熱載體進(jin)(jin)(jin)(jin)入(ru)(ru)(ru)劣(lie)(lie)質(zhi)重(zhong)油(you)(you)改(gai)(gai)質(zhi)反(fan)(fan)應(ying)(ying)(ying)(ying)器(qi)(qi)與(yu)劣(lie)(lie) 質(zhi)重(zhong)油(you)(you)進(jin)(jin)(jin)(jin)料(D)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)改(gai)(gai)質(zhi)反(fan)(fan)應(ying)(ying)(ying)(ying),改(gai)(gai)質(zhi)反(fan)(fan)應(ying)(ying)(ying)(ying)結束后(hou)(hou),改(gai)(gai)質(zhi)反(fan)(fan)應(ying)(ying)(ying)(ying)物流(liu)經沉降分(fen)(fen)離(li)(li),分(fen)(fen)離(li)(li)出(chu)的(de)(de)劣(lie)(lie)質(zhi)重(zhong)油(you)(you)改(gai)(gai)質(zhi)反(fan)(fan)應(ying)(ying)(ying)(ying)生(sheng)成油(you)(you)氣(qi)(B)進(jin)(jin)(jin)(jin)入(ru)(ru)(ru)劣(lie)(lie)質(zhi)重(zhong)油(you)(you)改(gai)(gai)質(zhi)分(fen)(fen)餾塔進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)分(fen)(fen)餾,分(fen)(fen)離(li)(li)出(chu)的(de)(de)待(dai)生(sheng)催(cui)(cui)(cui)化(hua)(hua)(hua)劑(ji)(ji)經第二沉降器(qi)(qi)汽(qi)提(ti)(ti)段(13)水(shui)蒸汽(qi)汽(qi)提(ti)(ti)后(hou)(hou)進(jin)(jin)(jin)(jin)入(ru)(ru)(ru)再(zai)(zai)生(sheng)器(qi)(qi)(6)內進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)燒焦再(zai)(zai)生(sheng),循(xun)環使(shi)用(yong)。該文獻技術主(zhu)要是將待(dai)生(sheng)催(cui)(cui)(cui)化(hua)(hua)(hua)劑(ji)(ji)水(shui)蒸汽(qi)氣(qi)體后(hou)(hou)和(he)再(zai)(zai)生(sheng)催(cui)(cui)(cui)化(hua)(hua)(hua)劑(ji)(ji)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)了(le)混(hun)合(he),從而使(shi)第二段反(fan)(fan)應(ying)(ying)(ying)(ying)器(qi)(qi)能(neng)夠處理劣(lie)(lie)質(zhi)重(zhong)油(you)(you)進(jin)(jin)(jin)(jin)料,形成了(le)所謂的(de)(de)流(liu)態(tai)化(hua)(hua)(hua)劣(lie)(lie)的(de)(de)質(zhi)油(you)(you)改(gai)(gai)質(zhi)工藝,但是其FCC產品(pin)分(fen)(fen)布和(he)產品(pin)性質(zhi)沒(mei)有得到改(gai)(gai)變。
CN02149315.4和CN02149313.8公開了(le)一(yi)(yi)種(zhong)高(gao)效重油(you)裂(lie)(lie)化(hua)(hua)(hua)(hua)(hua)與汽油(you)改(gai)質(zhi)耦合調控的(de)(de)方法和裝置(zhi),重油(you)催(cui)(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)裂(lie)(lie)化(hua)(hua)(hua)(hua)(hua)裝置(zhi)包括兩個提升(sheng)管反(fan)應(ying)器,以提高(gao)重油(you)催(cui)(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)裂(lie)(lie)化(hua)(hua)(hua)(hua)(hua)的(de)(de)轉化(hua)(hua)(hua)(hua)(hua)深度,提高(gao)輕質(zhi)油(you)收(shou)率;再(zai)生器連(lian)設一(yi)(yi)輔助的(de)(de)流(liu)態化(hua)(hua)(hua)(hua)(hua)反(fan)應(ying)器,利用從再(zai)生器引來的(de)(de)高(gao)溫再(zai)生催(cui)(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑對催(cui)(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)裂(lie)(lie)化(hua)(hua)(hua)(hua)(hua)汽油(you)餾分(fen)進行(xing)催(cui)(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)改(gai)質(zhi)反(fan)應(ying),以達到(dao)降低烯烴含(han)量并(bing)保持辛烷值的(de)(de)目的(de)(de);催(cui)(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)汽油(you)改(gai)質(zhi)反(fan)應(ying)后(hou)的(de)(de)待生催(cui)(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑回注到(dao)原催(cui)(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)裂(lie)(lie)化(hua)(hua)(hua)(hua)(hua)裝置(zhi)的(de)(de)第一(yi)(yi)提升(sheng)管反(fan)應(ying)器中去。該發(fa)明(ming)(ming)采用三(san)根提升(sheng)管聯合生產方式增(zeng)加(jia)了(le)操作的(de)(de)難度,且(qie)本發(fa)明(ming)(ming)未提供實施(shi)數(shu)據。
CN102108308A公開了(le)原(yuan)(yuan)油(you)(you)(you)(you)(you)(you)生產高辛烷(wan)值(zhi)汽(qi)油(you)(you)(you)(you)(you)(you)的(de)催(cui)(cui)化(hua)裂化(hua)方(fang)法,以預處理原(yuan)(yuan)油(you)(you)(you)(you)(you)(you)為(wei)(wei)原(yuan)(yuan)料(liao)(liao)油(you)(you)(you)(you)(you)(you)在催(cui)(cui)化(hua)裂化(hua)反(fan)應(ying)器內與(yu)含大孔沸石(shi)的(de)粗(cu)粒徑(jing)分布(bu)的(de)催(cui)(cui)化(hua)劑(ji)接(jie)觸進行(xing)反(fan)應(ying),反(fan)應(ying)溫(wen)度、油(you)(you)(you)(you)(you)(you)氣(qi)停留時(shi)間、催(cui)(cui)化(hua)劑(ji)與(yu)原(yuan)(yuan)料(liao)(liao)油(you)(you)(you)(you)(you)(you)重(zhong)(zhong)量(liang)比足以使反(fan)應(ying)得到(dao)包含占原(yuan)(yuan)料(liao)(liao)油(you)(you)(you)(you)(you)(you)15~60重(zhong)(zhong)%催(cui)(cui)化(hua)蠟油(you)(you)(you)(you)(you)(you)的(de)反(fan)應(ying)產物,其中所述重(zhong)(zhong)時(shi)空速為(wei)(wei)25~100h-1,所述反(fan)應(ying)溫(wen)度為(wei)(wei)450~600℃,所述催(cui)(cui)化(hua)劑(ji)與(yu)原(yuan)(yuan)料(liao)(liao)油(you)(you)(you)(you)(you)(you)重(zhong)(zhong)量(liang)比為(wei)(wei)1~30。該方(fang)法將劣質原(yuan)(yuan)油(you)(you)(you)(you)(you)(you)轉化(hua)為(wei)(wei)高辛烷(wan)值(zhi)汽(qi)油(you)(you)(you)(you)(you)(you)的(de)同時(shi),使干(gan)氣(qi)和(he)焦炭產率大幅度降低(di)從而(er)(er)實現石(shi)油(you)(you)(you)(you)(you)(you)資源(yuan)的(de)高效利用,催(cui)(cui)化(hua)劑(ji)因顆粒更加(jia)(jia)均(jun)勻(yun),從而(er)(er)在再生過程中局部(bu)的(de)溫(wen)度分布(bu)也更加(jia)(jia)均(jun)勻(yun),催(cui)(cui)化(hua)劑(ji)破(po)碎(sui)傾(qing)向也相應(ying)地降低(di)。但是該發明將提(ti)升管分為(wei)(wei)兩個(ge)反(fan)應(ying)區(qu)(qu),反(fan)應(ying)后的(de)催(cui)(cui)化(hua)蠟油(you)(you)(you)(you)(you)(you)進入加(jia)(jia)氫(qing)處理裝置或/和(he)芳(fang)烴抽提(ti)裝置進行(xing)處理,反(fan)應(ying)后的(de)加(jia)(jia)氫(qing)催(cui)(cui)化(hua)蠟油(you)(you)(you)(you)(you)(you)或/和(he)抽余油(you)(you)(you)(you)(you)(you)進入提(ti)升管的(de)第二反(fan)應(ying)區(qu)(qu)繼(ji)續反(fan)應(ying),但此時(shi)接(jie)觸的(de)催(cui)(cui)化(hua)劑(ji)已(yi)經失去大部(bu)分活性,且加(jia)(jia)氫(qing)和(he)芳(fang)烴抽提(ti)增加(jia)(jia)了(le)運(yun)行(xing)成本。
CN03126241.4公開了一種催(cui)化(hua)裂(lie)(lie)化(hua)方法和設(she)備,是在常(chang)(chang)規催(cui)化(hua)裂(lie)(lie)化(hua)粗(cu)旋分離器(qi)油(you)(you)氣(qi)(qi)出(chu)口設(she)下行(xing)管副(fu)(fu)反(fan)應區,來自粗(cu)旋分離器(qi)的(de)反(fan)應油(you)(you)氣(qi)(qi)在副(fu)(fu)反(fan)應區上部與來自再(zai)生器(qi)的(de)再(zai)生催(cui)化(hua)劑(ji)接觸,在反(fan)應溫度為(wei)(wei)300~600℃,劑(ji)油(you)(you)重量(liang)比為(wei)(wei)1~8,反(fan)應絕對壓力為(wei)(wei)0.15~0.4MPa,反(fan)應時(shi)間(jian)為(wei)(wei)0.3~2.0秒(miao)條件下進行(xing) 反(fan)應。采用一個(ge)提升(sheng)管兩段反(fan)應區,以大(da)慶常(chang)(chang)壓渣油(you)(you)為(wei)(wei)原料,總的(de)重油(you)(you)產率(lv)(lv)為(wei)(wei)8.5~11%;中(zhong)壓常(chang)(chang)渣為(wei)(wei)原料時(shi),重油(you)(you)收(shou)率(lv)(lv)會增加(9.8~13.5)%,焦(jiao)化(hua)蠟油(you)(you)的(de)重油(you)(you)產率(lv)(lv)較低。該發明雖然能夠提高輕油(you)(you)收(shou)率(lv)(lv)和總液(ye)收(shou),但該方法也導致了焦(jiao)炭和干(gan)氣(qi)(qi)產率(lv)(lv)增加。
CN101074392A公開了一(yi)種利(li)用兩段催化裂解生產(chan)(chan)丙(bing)烯和高品質(zhi)(zhi)(zhi)汽(qi)柴(chai)油(you)的(de)方法(fa),該方法(fa)主要是利(li)用兩段提升管(guan)催化工藝,采用富含擇形分子(zi)篩的(de)催化劑,以重(zhong)質(zhi)(zhi)(zhi)石油(you)烴類或富含碳(tan)氫(qing)化合(he)物(wu)(wu)的(de)各種動植物(wu)(wu)油(you)類為原(yuan)料(liao),針對不同性質(zhi)(zhi)(zhi)的(de)反應物(wu)(wu)料(liao)進行(xing)進料(liao)方式(shi)的(de)優化組合(he),控制不同物(wu)(wu)料(liao)適宜的(de)反應條(tiao)件(jian),可以達到提高丙(bing)烯收(shou)率(lv)、兼(jian)顧輕油(you)收(shou)率(lv)和質(zhi)(zhi)(zhi)量、抑制干氣和焦炭(tan)生成(cheng)的(de)目的(de)。但(dan)是該方法(fa)損失(shi)了汽(qi)油(you)收(shou)率(lv)來增產(chan)(chan)丙(bing)烯。
技術實現要素:
本發(fa)明(ming)所要解(jie)決的技(ji)術問題(ti)是在現有(you)技(ji)術的基(ji)礎上,提(ti)供一(yi)種提(ti)升(sheng)管催(cui)化(hua)(hua)裂化(hua)(hua)工藝,具體為一(yi)種適用(yong)于重質原料的提(ti)升(sheng)管催(cui)化(hua)(hua)裂化(hua)(hua)工藝,該提(ti)升(sheng)管催(cui)化(hua)(hua)裂化(hua)(hua)工藝具有(you)較(jiao)高的輕油收率,同時可以減少干氣(qi)和焦炭(tan)的生(sheng)成,從(cong)而實現石油資(zi)源(yuan)的有(you)效利用(yong)。
本發明公(gong)開了一(yi)種提(ti)升(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)管(guan)(guan)(guan)(guan)催化(hua)(hua)裂化(hua)(hua)工藝,其具(ju)體技術(shu)方(fang)案為(wei):重(zhong)質原(yuan)(yuan)料(liao)進入(ru)第(di)(di)(di)一(yi)段提(ti)升(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)管(guan)(guan)(guan)(guan)與再(zai)生(sheng)催化(hua)(hua)劑接(jie)觸反(fan)(fan)應(ying)(ying),第(di)(di)(di)一(yi)段提(ti)升(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)管(guan)(guan)(guan)(guan)產(chan)(chan)物(wu)(wu)(wu)中重(zhong)油(you)(you)質量收(shou)率10~40%,優(you)選(xuan)10~35%,反(fan)(fan)應(ying)(ying)結束第(di)(di)(di)一(yi)段提(ti)升(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)反(fan)(fan)應(ying)(ying)產(chan)(chan)物(wu)(wu)(wu)進入(ru)沉(chen)降分(fen)(fen)離(li)器(qi)和(he)后續分(fen)(fen)離(li)系統進行分(fen)(fen)離(li);在第(di)(di)(di)二(er)段提(ti)升(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)管(guan)(guan)(guan)(guan)內,反(fan)(fan)應(ying)(ying)物(wu)(wu)(wu)料(liao)與再(zai)生(sheng)催化(hua)(hua)劑接(jie)觸,反(fan)(fan)應(ying)(ying)結束第(di)(di)(di)二(er)段提(ti)升(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)反(fan)(fan)應(ying)(ying)產(chan)(chan)物(wu)(wu)(wu)進入(ru)沉(chen)降分(fen)(fen)離(li)器(qi)和(he)后續分(fen)(fen)離(li)系統,第(di)(di)(di)二(er)段提(ti)升(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)反(fan)(fan)應(ying)(ying)物(wu)(wu)(wu)料(liao)為(wei)輕質原(yuan)(yuan)料(liao)與第(di)(di)(di)一(yi)段提(ti)升(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)反(fan)(fan)應(ying)(ying)產(chan)(chan)物(wu)(wu)(wu)中的(de)(de)(de)(de)重(zhong)油(you)(you)的(de)(de)(de)(de)混合物(wu)(wu)(wu),輕質原(yuan)(yuan)料(liao)和(he)第(di)(di)(di)一(yi)段提(ti)升(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)管(guan)(guan)(guan)(guan)產(chan)(chan)物(wu)(wu)(wu)中的(de)(de)(de)(de)重(zhong)油(you)(you)的(de)(de)(de)(de)質量比為(wei)1:9~9:1,優(you)選(xuan)2:8~7:3,所述的(de)(de)(de)(de)輕質原(yuan)(yuan)料(liao)為(wei)汽(qi)油(you)(you)、柴油(you)(you)、混合碳(tan)四烯烴、混合碳(tan)四烷烴中的(de)(de)(de)(de)一(yi)種或多種。
本發明所述的提升管催化裂化工藝,重質原料為本領域技術人員所公知。以原料質量組成為100份計,重質原料中碳元素90~80份,氫元素10~20份,優選碳元素88~85份,氫元素12~15份。本發明的重質原料也可以是沸點大于等于200℃的天然烴油和合成的含烴油,重質原料的沸點越低其催化裂化反應越容易發生,本發明提供的方法能夠處理大于等于200℃的天然烴油和合成的含烴油,這其中包括沸點不小于350℃的天然的和合成的含烴油、沸點高于 566℃物料的重質含烴油。重質原料也可以是20℃時密度為0.85~1.20g.cm-3的(de)天然的(de)和合成的(de)含烴油。常見的(de)重質(zhi)(zhi)原(yuan)料選自減壓(ya)蠟(la)油、常壓(ya)蠟(la)油、劣質(zhi)(zhi)柴油、富含碳(tan)氫化(hua)合物的(de)各種動植物油類、減壓(ya)渣油、抽余油、脫瀝(li)青油、焦(jiao)化(hua)蠟(la)油、頁巖油、瀝(li)青砂油、重質(zhi)(zhi)殘石油原(yuan)油中的(de)一種或多種。
所述的富含碳氫化合物的各種動(dong)植(zhi)物油類可以為動(dong)物油、植(zhi)物油、合成(cheng)油中的一種或多(duo)種。
本發明(ming)所述的(de)提升管催化(hua)裂化(hua)工藝,第一(yi)段(duan)提升管產物中的(de)重油是指沸點(dian)在不小于350℃的(de)天然的(de)和合成的(de)含烴(jing)油,如回煉油、回煉油漿中的(de)一(yi)種(zhong)或多種(zhong)。
本(ben)發明所(suo)述的提升管催化(hua)(hua)(hua)裂化(hua)(hua)(hua)工(gong)藝(yi),其(qi)第(di)(di)一段(duan)(duan)提升管、第(di)(di)二段(duan)(duan)提升管反應工(gong)藝(yi)條(tiao)件(jian)為現有技術(shu)通用的工(gong)藝(yi)條(tiao)件(jian),例如(ru)第(di)(di)一、二段(duan)(duan)提升管工(gong)藝(yi)條(tiao)件(jian)為:反應溫度(du)460~560℃,劑(ji)(ji)油(you)比(bi)5~10,反應時間0.5~2.5s;其(qi)所(suo)用的催化(hua)(hua)(hua)劑(ji)(ji)為通用的催化(hua)(hua)(hua)裂化(hua)(hua)(hua)半合(he)(he)成催化(hua)(hua)(hua)劑(ji)(ji),例如(ru)分子篩占活性組(zu)分的質(zhi)(zhi)量比(bi)例不大于80%的半合(he)(he)成催化(hua)(hua)(hua)劑(ji)(ji);本(ben)發明公開的提升管催化(hua)(hua)(hua)裂化(hua)(hua)(hua)工(gong)藝(yi),催化(hua)(hua)(hua)劑(ji)(ji)、反應溫度(du)、劑(ji)(ji)油(you)比(bi)、反應時間只要共同(tong)滿足一段(duan)(duan)反應的重油(you)質(zhi)(zhi)量收(shou)率(lv)10~40%即可,優(you)選10~35%;將經過(guo)一段(duan)(duan)改質(zhi)(zhi)的重質(zhi)(zhi)原(yuan)料作(zuo)為二段(duan)(duan)原(yuan)料,在二段(duan)(duan)高苛刻度(du)的條(tiao)件(jian)下反應,綜(zong)合(he)(he)控(kong)制干氣和焦炭的產(chan)率(lv)最(zui)小化(hua)(hua)(hua)。
本(ben)發明所(suo)公開的提升(sheng)管催(cui)化(hua)(hua)裂化(hua)(hua)工藝,所(suo)述的重油質量(liang)收率(lv)為重質原(yuan)料進入第一段提升(sheng)管與(yu)再(zai)生(sheng)催(cui)化(hua)(hua)劑接觸反應后產生(sheng)的重油質量(liang)相對重質原(yuan)料的質量(liang)百分(fen)比。
本發(fa)明所(suo)公開的(de)(de)(de)提(ti)(ti)升(sheng)(sheng)管(guan)(guan)(guan)催(cui)化(hua)裂化(hua)工藝,其中(zhong)的(de)(de)(de)第(di)一(yi)(yi)段提(ti)(ti)升(sheng)(sheng)管(guan)(guan)(guan)反(fan)應(ying)(ying)的(de)(de)(de)重油質量(liang)收率(lv)10~40%,優(you)選(xuan)10~35%,其重油質量(liang)收率(lv)和(he)催(cui)化(hua)裂化(hua)反(fan)應(ying)(ying)中(zhong)焦(jiao)(jiao)(jiao)炭(tan)(tan)產(chan)物(wu)的(de)(de)(de)突變點相互配合時,其效果更佳。重質原料進入第(di)一(yi)(yi)段提(ti)(ti)升(sheng)(sheng)管(guan)(guan)(guan)反(fan)應(ying)(ying)器與再生催(cui)化(hua)劑接(jie)觸(chu)反(fan)應(ying)(ying),第(di)一(yi)(yi)段提(ti)(ti)升(sheng)(sheng)管(guan)(guan)(guan)的(de)(de)(de)反(fan)應(ying)(ying)產(chan)物(wu)中(zhong)焦(jiao)(jiao)(jiao)炭(tan)(tan)的(de)(de)(de)質量(liang)產(chan)率(lv)和(he)第(di)一(yi)(yi)段提(ti)(ti)升(sheng)(sheng)管(guan)(guan)(guan)的(de)(de)(de)溫(wen)度(du)之間的(de)(de)(de)關系(xi)為:焦(jiao)(jiao)(jiao)炭(tan)(tan)的(de)(de)(de)質量(liang)產(chan)率(lv)=k×溫(wen)度(du)+b,k為第(di)一(yi)(yi)段提(ti)(ti)升(sheng)(sheng)管(guan)(guan)(guan)反(fan)應(ying)(ying)溫(wen)度(du)對(dui)第(di)一(yi)(yi)段反(fan)應(ying)(ying)產(chan)物(wu)中(zhong)焦(jiao)(jiao)(jiao)炭(tan)(tan)質量(liang)產(chan)率(lv)的(de)(de)(de)斜(xie)率(lv),,焦(jiao)(jiao)(jiao)炭(tan)(tan)產(chan)物(wu)的(de)(de)(de)突變點是指提(ti)(ti)升(sheng)(sheng)管(guan)(guan)(guan)反(fan)應(ying)(ying)溫(wen)度(du)對(dui)焦(jiao)(jiao)(jiao)炭(tan)(tan)質量(liang)產(chan)率(lv)的(de)(de)(de)斜(xie)率(lv)出現增(zeng)大(da),本發(fa)明優(you)選(xuan)其斜(xie)率(lv)比值大(da)于(yu)1,優(you)選(xuan)4~5。
本(ben)發(fa)明(ming)所述(shu)的提升(sheng)管(guan)催化(hua)(hua)裂化(hua)(hua)工藝(yi),第一段(duan)、第二(er)段(duan)提升(sheng)管(guan)工藝(yi)條件為:反應(ying)(ying)溫(wen)度(du)460~560℃,劑油比(bi)5~10,反應(ying)(ying)時間(jian)0.5~2.5s,優(you)選第二(er)段(duan)提升(sheng) 管(guan)反應(ying)(ying)溫(wen)度(du)比(bi)第一段(duan)提升(sheng)管(guan)反應(ying)(ying)溫(wen)度(du)高5~100℃,優(you)選10~70℃。本(ben)發(fa)明(ming)所述(shu)的提升(sheng)管(guan)催化(hua)(hua)裂化(hua)(hua)工藝(yi),第一段(duan)提升(sheng)管(guan)的反應(ying)(ying)溫(wen)度(du)優(you)選為460~510℃。
本發明所述的提升管催化裂化工藝,第一段和第二段中的催化劑可以相同,也可以不同,無論催化劑是否相同,只要催化劑、反應溫度、反應時間、劑油比共同滿足本發明一段催化裂化反應的重油收率為10~40%即可。本發明的催化裂化催化劑,以催化劑質量組成為100份計,包括:基質40-100份,優選40~90份,分子篩0~70份,優選10~60份,孔體積0.1-0.6ml/g,比表面積50-500m2/g,800℃100%水汽(qi)老化17小時微反活性20~65%。所述(shu)的基質為(wei)粘土和(he)氧(yang)(yang)化鋁(lv)混(hun)合物(wu)、粘土和(he)氧(yang)(yang)化鋁(lv)及氧(yang)(yang)化硅(gui)混(hun)合物(wu)。
本發明所述的(de)提升管催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)裂(lie)化(hua)(hua)(hua)(hua)工藝(yi),所用的(de)催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)劑(ji)優(you)選催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)裂(lie)化(hua)(hua)(hua)(hua)半合(he)成(cheng)催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)劑(ji),該技(ji)術為本領域技(ji)術人員所公(gong)知,即以具有酸中心(xin)的(de)分子篩(shai)、高嶺土基質為原(yuan)料,制(zhi)備成(cheng)混(hun)合(he)漿(jiang)液(ye)噴霧干燥制(zhi)備而(er)成(cheng)的(de)催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)裂(lie)化(hua)(hua)(hua)(hua)催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)劑(ji)。以催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)劑(ji)質量組成(cheng)為100份(fen)計(ji),包括基質40~90份(fen),分子篩(shai)10~60份(fen),優(you)選基質85~55份(fen),分子篩(shai)45~15份(fen)。在半合(he)成(cheng)催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)劑(ji)中,分子篩(shai)為活性組分,其質量含量一般控制(zhi)在不大(da)于70%,例如在CN02103907.0、CN200410088564.1、CN201110419922.2、CN00132747.X、CN00122003.9、CN200610089021.0、CN200610112581.3中公(gong)開的(de)催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)劑(ji)均適合(he)于本提升管催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)裂(lie)化(hua)(hua)(hua)(hua)工藝(yi)。
本(ben)發(fa)明所(suo)述的(de)(de)提升管催化裂(lie)化工藝,所(suo)用(yong)的(de)(de)分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai)為(wei)各種(zhong)具有酸性中(zhong)心的(de)(de)分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai),該分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai)為(wei)Y型(xing)(xing)分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai),Y型(xing)(xing)分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai)和選自(zi)X型(xing)(xing)、Beta、ZSM-5、MOR、MCM-22擇形(xing)分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai)中(zhong)一(yi)種(zhong)或(huo)多(duo)種(zhong)所(suo)形(xing)成的(de)(de)復合(he)分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai);Y型(xing)(xing)分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai)可(ke)以(yi)是(shi)經過改性處理,例如可(ke)以(yi)為(wei)HY、REY、USY、REHY、REUSY;擇形(xing)分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai)也可(ke)以(yi)為(wei)經過改性處理的(de)(de)分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai),例如:HZSM-5。本(ben)發(fa)明催化裂(lie)化半合(he)成催化劑中(zhong),分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai)優(you)選為(wei)Y型(xing)(xing)、Y型(xing)(xing)和ZSM-5復合(he)分(fen)(fen)(fen)子(zi)(zi)篩(shai)(shai)。
本發(fa)明所述的(de)(de)(de)(de)提(ti)(ti)(ti)升(sheng)管催化裂(lie)化工(gong)藝,第(di)(di)(di)一(yi)(yi)段(duan)和(he)(he)第(di)(di)(di)二(er)段(duan)反(fan)應(ying)產(chan)物(wu)(wu)進(jin)(jin)入(ru)氣(qi)(qi)固(gu)沉(chen)降(jiang)(jiang)(jiang)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)器(qi)(qi)和(he)(he)后(hou)續(xu)(xu)(xu)的(de)(de)(de)(de)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)系(xi)統,即(ji)反(fan)應(ying)產(chan)物(wu)(wu)在(zai)經過氣(qi)(qi)固(gu)沉(chen)降(jiang)(jiang)(jiang)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)器(qi)(qi)后(hou),進(jin)(jin)入(ru)后(hou)續(xu)(xu)(xu)的(de)(de)(de)(de)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)系(xi)統。氣(qi)(qi)固(gu)沉(chen)降(jiang)(jiang)(jiang)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)器(qi)(qi)和(he)(he)后(hou)續(xu)(xu)(xu)的(de)(de)(de)(de)分(fen)(fen)(fen)(fen)餾系(xi)統可(ke)以(yi)一(yi)(yi)、二(er)段(duan)共用,或一(yi)(yi)、二(er)段(duan)分(fen)(fen)(fen)(fen)別(bie)使(shi)用。以(yi)氣(qi)(qi)固(gu)沉(chen)降(jiang)(jiang)(jiang)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)器(qi)(qi)為例,本發(fa)明可(ke)以(yi)在(zai)第(di)(di)(di)一(yi)(yi)提(ti)(ti)(ti)升(sheng)管和(he)(he)第(di)(di)(di)二(er)提(ti)(ti)(ti)升(sheng)管的(de)(de)(de)(de)頂部分(fen)(fen)(fen)(fen)別(bie)設立氣(qi)(qi)固(gu)沉(chen)降(jiang)(jiang)(jiang)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)器(qi)(qi)使(shi)第(di)(di)(di)一(yi)(yi)段(duan)和(he)(he)第(di)(di)(di)二(er)段(duan)反(fan)應(ying)產(chan)物(wu)(wu)分(fen)(fen)(fen)(fen)別(bie)進(jin)(jin)入(ru)氣(qi)(qi)固(gu)沉(chen)降(jiang)(jiang)(jiang)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)器(qi)(qi)進(jin)(jin)行沉(chen)降(jiang)(jiang)(jiang)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li),也(ye)可(ke)以(yi)僅在(zai)第(di)(di)(di)一(yi)(yi)提(ti)(ti)(ti)升(sheng)管或第(di)(di)(di)二(er)提(ti)(ti)(ti)升(sheng)管的(de)(de)(de)(de)頂部設立氣(qi)(qi)固(gu)沉(chen)降(jiang)(jiang)(jiang)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)器(qi)(qi),使(shi)第(di)(di)(di)一(yi)(yi)段(duan)和(he)(he)第(di)(di)(di)二(er)段(duan)反(fan)應(ying)產(chan)物(wu)(wu)也(ye)可(ke)以(yi)進(jin)(jin)入(ru)同一(yi)(yi)氣(qi)(qi)固(gu)沉(chen)降(jiang)(jiang)(jiang)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)器(qi)(qi)進(jin)(jin)行 沉(chen)降(jiang)(jiang)(jiang)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)。該分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)系(xi)統可(ke)以(yi)是共用,也(ye)可(ke)以(yi)設置不同的(de)(de)(de)(de)分(fen)(fen)(fen)(fen)離(li)(li)(li)(li)系(xi)統。
本(ben)發明(ming)所述(shu)的(de)(de)提(ti)升(sheng)管催化(hua)(hua)裂(lie)(lie)化(hua)(hua)工(gong)藝,通過控制(zhi)第(di)一(yi)(yi)段(duan)反(fan)應產(chan)物(wu)中(zhong)(zhong)重(zhong)油(you)收率使第(di)一(yi)(yi)段(duan)催化(hua)(hua)裂(lie)(lie)化(hua)(hua)反(fan)應為緩和的(de)(de)催化(hua)(hua)裂(lie)(lie)化(hua)(hua)反(fan)應,從而(er)使得重(zhong)質原料在(zai)一(yi)(yi)段(duan)反(fan)應中(zhong)(zhong)氫分布合理(li)化(hua)(hua),降(jiang)低富(fu)集(ji)氫含量的(de)(de)干氣,轉移部分氫至重(zhong)油(you)中(zhong)(zhong),為二段(duan)反(fan)應提(ti)供(gong)優質原料,從而(er)實現(xian)重(zhong)質油(you)梯次裂(lie)(lie)化(hua)(hua),且裝置改造簡單,利于大(da)規(gui)模推廣(guang)。本(ben)發明(ming)的(de)(de)技(ji)術方案(an)在(zai)保證較(jiao)高輕油(you)收率的(de)(de)情況(kuang)下,干氣和焦炭之(zhi)和降(jiang)低≮2.00百分點(dian),有效地實現(xian)了煉(lian)廠(chang)多產(chan)柴油(you)和降(jiang)低碳排放的(de)(de)雙重(zhong)目標,符合國家倡導的(de)(de)綠色環保理(li)念。
附圖說明
圖(tu)1、圖(tu)2和圖(tu)3均(jun)為本發明一(yi)(yi)(yi)(yi)(yi)種提(ti)(ti)升管催化裂化工(gong)藝過程中的(de)裝置(zhi)流程圖(tu),圖(tu)1中第一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)產物(wu)和二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)產物(wu)分(fen)(fen)別進入(ru)各自的(de)沉(chen)降(jiang)器,但均(jun)進入(ru)同一(yi)(yi)(yi)(yi)(yi)分(fen)(fen)離(li)(li)系(xi)(xi)統(tong),圖(tu)2第一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)產物(wu)和第二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)產物(wu)分(fen)(fen)別進入(ru)各自的(de)沉(chen)降(jiang)器、各自的(de)分(fen)(fen)離(li)(li)系(xi)(xi)統(tong),圖(tu)3第一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)產物(wu)和第二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)產物(wu)進入(ru)同一(yi)(yi)(yi)(yi)(yi)沉(chen)降(jiang)器及同一(yi)(yi)(yi)(yi)(yi)分(fen)(fen)離(li)(li)系(xi)(xi)統(tong),其中:1-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)預(yu)提(ti)(ti)升氣(qi),2-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)預(yu)提(ti)(ti)升段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan),3-原料(liao),4-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan),5-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)汽提(ti)(ti)器,6-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)沉(chen)降(jiang)器,7-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)旋風(feng)分(fen)(fen)離(li)(li)器,8-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)油氣(qi),9-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)待生(sheng)(sheng)劑(ji)輸送段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan),10-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)待生(sheng)(sheng)滑(hua)閥,11-旋風(feng)分(fen)(fen)離(li)(li)器,12-再生(sheng)(sheng)器,13-煙(yan)氣(qi),14-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)再生(sheng)(sheng)輸送段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan),15-一(yi)(yi)(yi)(yi)(yi)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)再生(sheng)(sheng)滑(hua)閥,16-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)預(yu)提(ti)(ti)升氣(qi),17-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)預(yu)提(ti)(ti)升段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan),18-重(zhong)油,19-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan),20-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)汽提(ti)(ti)器,21-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)沉(chen)降(jiang)器,22-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)旋風(feng)分(fen)(fen)離(li)(li)器,23-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)待生(sheng)(sheng)劑(ji)輸送段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan),24-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)待生(sheng)(sheng)滑(hua)閥,25-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)再生(sheng)(sheng)劑(ji)輸送段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan),26-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)再生(sheng)(sheng)滑(hua)閥,27-二(er)(er)段(duan)(duan)(duan)(duan)(duan)(duan)(duan)(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)油氣(qi)。
具體實施方式
為了更(geng)好(hao)地(di)說明(ming)本(ben)發(fa)明(ming)的(de)技術(shu)方(fang)案和發(fa)明(ming)效(xiao)果(guo),列舉以(yi)下的(de)實施例,但本(ben)發(fa)明(ming)不僅限于這些實施例。
主要原料及來源:
LDO-70新鮮催化(hua)(hua)劑(ji),以催化(hua)(hua)劑(ji)質量組成(cheng)為100份計,基質75份,分子篩25份:蘭州石(shi)化(hua)(hua)公司(si)催化(hua)(hua)劑(ji)廠生產(chan)。
催(cui)化劑(ji)A為發明(ming)人在(zai)CN02103907.0專利中公開(kai)的催(cui)化劑(ji),以催(cui)化劑(ji)質(zhi)量組成為100份計,基質(zhi)70份,分(fen)子篩30份,具(ju)體理化性質(zhi)見表1。
表1催化劑理化性質
原(yuan)料(liao)油取自蘭州(zhou)石(shi)化(hua)公司300萬(wan)噸/年(nian)催(cui)化(hua)裂(lie)化(hua)裝置(zhi)的原(yuan)料(liao)油(性(xing)質(zhi)見表2),以下簡稱(cheng)300萬(wan)催(cui)料(liao),減壓(ya)蠟油與減壓(ya)渣油混合(he)質(zhi)量比例為(6:4)。
評價裝(zhuang)置采(cai)用(yong)洛陽石化工程公司的XTL-5型(xing)提升管催化裂化試驗(yan)裝(zhuang)置。
表2原料油的性質
本發(fa)明的工藝方(fang)案在反應裝(zhuang)置(zhi)上是如下實現的,具體實施方(fang)式(shi)參(can)照實施例,但(dan)不僅限于實施例。
實施例1
參(can)照圖2,300萬催料在(zai)第(di)一段(duan)提升管4與再生催化劑(ji)接(jie)觸(chu)反(fan)應(ying)(ying),在(zai)反(fan)應(ying)(ying)溫度480℃、劑(ji)油比5.02、反(fan)應(ying)(ying)時間2.06s條件下(xia),反(fan)應(ying)(ying)后(hou)進(jin)入(ru)氣固沉(chen)降分離(li) 器(qi)和(he)(he)后(hou)續分離(li)系統(tong)28;一段(duan)得(de)到的(de)(de)重油進(jin)入(ru)第(di)二段(duan)提升管19,在(zai)反(fan)應(ying)(ying)溫度490℃、劑(ji)油比5.66、反(fan)應(ying)(ying)時間2.35s條件下(xia),反(fan)應(ying)(ying)后(hou)第(di)二段(duan)出口(kou)的(de)(de)混合物進(jin)入(ru)氣固沉(chen)降分離(li)器(qi),油氣進(jin)入(ru)后(hou)續的(de)(de)分餾系統(tong),第(di)二段(duan)提升管19反(fan)應(ying)(ying)得(de)到的(de)(de)重油直接(jie)外甩。第(di)二段(duan)原料油為柴油和(he)(he)重油的(de)(de)混合物,其(qi)質(zhi)量(liang)比例為3:7。該實(shi)施例中所用的(de)(de)催化劑(ji)為LDO-70。具體反(fan)應(ying)(ying)條件和(he)(he)結果見表3。
實施例2
參(can)照圖1,300萬催(cui)料(liao)在第(di)一段(duan)提(ti)(ti)升(sheng)管(guan)(guan)4與(yu)再生催(cui)化劑(ji)(ji)接(jie)觸反(fan)(fan)(fan)應(ying)(ying),在反(fan)(fan)(fan)應(ying)(ying)溫度(du)470℃、劑(ji)(ji)油(you)(you)比4.59、反(fan)(fan)(fan)應(ying)(ying)時間(jian)2.12s條(tiao)件(jian)下,反(fan)(fan)(fan)應(ying)(ying)后進(jin)入(ru)氣固沉降(jiang)分(fen)離器和(he)(he)后續(xu)分(fen)離系統28;一段(duan)得到(dao)的重(zhong)(zhong)油(you)(you)進(jin)入(ru)第(di)二(er)段(duan)提(ti)(ti)升(sheng)管(guan)(guan)19,在反(fan)(fan)(fan)應(ying)(ying)溫度(du)490℃、劑(ji)(ji)油(you)(you)比6.87、反(fan)(fan)(fan)應(ying)(ying)時間(jian)2.33s條(tiao)件(jian)下,反(fan)(fan)(fan)應(ying)(ying)后第(di)二(er)段(duan)出口的混合(he)物進(jin)入(ru)氣固沉降(jiang)分(fen)離器,油(you)(you)氣進(jin)入(ru)后續(xu)的分(fen)餾(liu)系統,第(di)二(er)段(duan)提(ti)(ti)升(sheng)管(guan)(guan)19反(fan)(fan)(fan)應(ying)(ying)得到(dao)的重(zhong)(zhong)油(you)(you)和(he)(he)第(di)一段(duan)反(fan)(fan)(fan)應(ying)(ying)得到(dao)的重(zhong)(zhong)油(you)(you)進(jin)入(ru)第(di)二(er)段(duan)提(ti)(ti)升(sheng)管(guan)(guan)19反(fan)(fan)(fan)應(ying)(ying)。第(di)二(er)段(duan)原料(liao)油(you)(you)為(wei)柴油(you)(you)和(he)(he)重(zhong)(zhong)油(you)(you)的混合(he)物,其質量比例(li)(li)為(wei)5:5。該實施例(li)(li)中(zhong)所用的催(cui)化劑(ji)(ji)為(wei)催(cui)化劑(ji)(ji)A。具(ju)體(ti)反(fan)(fan)(fan)應(ying)(ying)條(tiao)件(jian)和(he)(he)結(jie)果見(jian)表3。
實施例3
參照圖1,300萬催(cui)料(liao)在第(di)一(yi)(yi)段(duan)(duan)(duan)提(ti)(ti)升管4與再生催(cui)化(hua)劑(ji)(ji)接觸反(fan)(fan)(fan)應,在反(fan)(fan)(fan)應溫(wen)度510℃、劑(ji)(ji)油比5.02、反(fan)(fan)(fan)應時(shi)間2.10s條(tiao)件(jian)下,反(fan)(fan)(fan)應后(hou)進(jin)(jin)入(ru)(ru)氣(qi)固沉降分離(li)器和(he)后(hou)續(xu)分離(li)系統28;一(yi)(yi)段(duan)(duan)(duan)得到(dao)(dao)(dao)的(de)重油進(jin)(jin)入(ru)(ru)第(di)二(er)段(duan)(duan)(duan)提(ti)(ti)升管19,在反(fan)(fan)(fan)應溫(wen)度530℃、劑(ji)(ji)油比5.66、反(fan)(fan)(fan)應時(shi)間2.35s條(tiao)件(jian)下,反(fan)(fan)(fan)應后(hou)第(di)二(er)段(duan)(duan)(duan)出口的(de)混(hun)(hun)合(he)(he)物(wu)進(jin)(jin)入(ru)(ru)氣(qi)固沉降分離(li)器,油氣(qi)進(jin)(jin)入(ru)(ru)后(hou)續(xu)的(de)分餾(liu)系統,第(di)二(er)段(duan)(duan)(duan)提(ti)(ti)升管19反(fan)(fan)(fan)應得到(dao)(dao)(dao)的(de)重油和(he)第(di)一(yi)(yi)段(duan)(duan)(duan)反(fan)(fan)(fan)應得到(dao)(dao)(dao)的(de)重油進(jin)(jin)入(ru)(ru)第(di)二(er)段(duan)(duan)(duan)提(ti)(ti)升管19反(fan)(fan)(fan)應。該實施例中(zhong)所用的(de)催(cui)化(hua)劑(ji)(ji)為催(cui)化(hua)劑(ji)(ji)A。第(di)二(er)段(duan)(duan)(duan)原料(liao)油為混(hun)(hun)合(he)(he)碳四和(he)重油的(de)混(hun)(hun)合(he)(he)物(wu),其質量比例為3:7。具體反(fan)(fan)(fan)應條(tiao)件(jian)和(he)結(jie)果見表3。
表3實(shi)施例反應條件及反應結果
第一(yi)段(duan)(duan)和(he)第二(er)段(duan)(duan)各(ge)(ge)產(chan)(chan)(chan)(chan)(chan)(chan)物(wu)(wu)(wu)產(chan)(chan)(chan)(chan)(chan)(chan)率(lv)計算方法如下:第一(yi)段(duan)(duan)各(ge)(ge)產(chan)(chan)(chan)(chan)(chan)(chan)物(wu)(wu)(wu)產(chan)(chan)(chan)(chan)(chan)(chan)率(lv)為(wei)各(ge)(ge)產(chan)(chan)(chan)(chan)(chan)(chan)物(wu)(wu)(wu)占(zhan)重(zhong)(zhong)(zhong)質(zhi)原料的質(zhi)量(liang)(liang)(liang)(liang)百(bai)分含(han)量(liang)(liang)(liang)(liang),第二(er)段(duan)(duan)各(ge)(ge)產(chan)(chan)(chan)(chan)(chan)(chan)物(wu)(wu)(wu)產(chan)(chan)(chan)(chan)(chan)(chan)率(lv)為(wei)各(ge)(ge)產(chan)(chan)(chan)(chan)(chan)(chan)物(wu)(wu)(wu)占(zhan)重(zhong)(zhong)(zhong)油(you)(you)的質(zhi)量(liang)(liang)(liang)(liang)百(bai)分含(han)量(liang)(liang)(liang)(liang),兩(liang)段(duan)(duan)合(he)計中各(ge)(ge)產(chan)(chan)(chan)(chan)(chan)(chan)物(wu)(wu)(wu)分布(除重(zhong)(zhong)(zhong)油(you)(you)外)為(wei)二(er)段(duan)(duan)產(chan)(chan)(chan)(chan)(chan)(chan)物(wu)(wu)(wu)質(zhi)量(liang)(liang)(liang)(liang)百(bai)分含(han)量(liang)(liang)(liang)(liang)乘(cheng)以一(yi)段(duan)(duan)重(zhong)(zhong)(zhong)油(you)(you)質(zhi)量(liang)(liang)(liang)(liang)分數(shu)與(yu)一(yi)段(duan)(duan)產(chan)(chan)(chan)(chan)(chan)(chan)物(wu)(wu)(wu)質(zhi)量(liang)(liang)(liang)(liang)分數(shu)之(zhi)和(he),兩(liang)段(duan)(duan)合(he)計重(zhong)(zhong)(zhong)油(you)(you)收(shou)率(lv)為(wei)二(er)段(duan)(duan)產(chan)(chan)(chan)(chan)(chan)(chan)物(wu)(wu)(wu)收(shou)率(lv)乘(cheng)以一(yi)段(duan)(duan)重(zhong)(zhong)(zhong)油(you)(you)收(shou)率(lv)再乘(cheng)以100。
對比例1
對比(bi)例1采用CN99105903.4工藝(yi),300萬催(cui)料在長反(fan)應(ying)(ying)(ying)時(shi)間提升(sheng)管反(fan)應(ying)(ying)(ying)器與催(cui)化(hua)劑(ji)接觸反(fan)應(ying)(ying)(ying),在510℃、劑(ji)油比(bi)為(wei)5.6,4s反(fan)應(ying)(ying)(ying)后,進入氣固沉降分(fen)離(li)器和后續(xu)分(fen)離(li)系統(tong),得到的產物分(fen)布。該對比(bi)例中所用的催(cui)化(hua)劑(ji)為(wei)催(cui)化(hua)劑(ji)A。 具體(ti)反(fan)應(ying)(ying)(ying)條件和結果見表4。
對比例2
參照圖2,300萬(wan)催(cui)(cui)(cui)料在第(di)一段(duan)提(ti)升管(guan)4與再(zai)生催(cui)(cui)(cui)化(hua)劑接觸反(fan)(fan)(fan)(fan)應(ying)(ying)(ying),在反(fan)(fan)(fan)(fan)應(ying)(ying)(ying)溫度516℃、劑油(you)比(bi)(bi)3.5、反(fan)(fan)(fan)(fan)應(ying)(ying)(ying)時間0.7s條(tiao)(tiao)件(jian)下,反(fan)(fan)(fan)(fan)應(ying)(ying)(ying)后(hou)進(jin)入(ru)氣(qi)固(gu)沉降分(fen)離器(qi)(qi)和(he)后(hou)續(xu)分(fen)離系(xi)統28;一段(duan)得(de)到的重(zhong)油(you)進(jin)入(ru)第(di)二段(duan)提(ti)升管(guan)19,在反(fan)(fan)(fan)(fan)應(ying)(ying)(ying)溫度545℃、劑油(you)比(bi)(bi)8.2、反(fan)(fan)(fan)(fan)應(ying)(ying)(ying)時間2.6s條(tiao)(tiao)件(jian)下,反(fan)(fan)(fan)(fan)應(ying)(ying)(ying)后(hou)第(di)二段(duan)出口的混(hun)合物進(jin)入(ru)氣(qi)固(gu)沉降分(fen)離器(qi)(qi),油(you)氣(qi)進(jin)入(ru)后(hou)續(xu)的分(fen)餾系(xi)統,第(di)二段(duan)提(ti)升管(guan)19反(fan)(fan)(fan)(fan)應(ying)(ying)(ying)得(de)到的重(zhong)油(you)和(he)第(di)一段(duan)反(fan)(fan)(fan)(fan)應(ying)(ying)(ying)得(de)到的重(zhong)油(you)進(jin)入(ru)第(di)二段(duan)提(ti)升管(guan)19反(fan)(fan)(fan)(fan)應(ying)(ying)(ying)。該對比(bi)(bi)例中所(suo)用的催(cui)(cui)(cui)化(hua)劑為(wei)催(cui)(cui)(cui)化(hua)劑A。具體反(fan)(fan)(fan)(fan)應(ying)(ying)(ying)條(tiao)(tiao)件(jian)和(he)結果見表4。
實施例(li)1與對比例(li)1相比,在一(yi)段反應(ying)溫度(du)480℃、劑(ji)油(you)比5.02、反應(ying)時間(jian)2.06s和(he)二段反應(ying)溫度(du)490℃、劑(ji)油(you)比5.66、反應(ying)時間(jian)2.35s條件下,反應(ying)后柴油(you)收(shou)率提(ti)高了8.02個(ge)(ge)百(bai)分(fen)(fen)點,但干氣(qi)收(shou)率降低了0.82個(ge)(ge)百(bai)分(fen)(fen)點,焦炭收(shou)率降低了1.98個(ge)(ge)百(bai)分(fen)(fen)點。
實施例2與對(dui)比例1相比,在一段(duan)反應(ying)(ying)溫(wen)度470℃、劑(ji)油比4.59、反應(ying)(ying)時間(jian)2.12s和二段(duan)反應(ying)(ying)溫(wen)度490℃、劑(ji)油比6.87、反應(ying)(ying)時間(jian)2.33s條(tiao)件下,柴(chai)油收率(lv)提高(gao)了9.22個百(bai)(bai)分(fen)(fen)點(dian),但干氣收率(lv)降低了0.99個百(bai)(bai)分(fen)(fen)點(dian),焦炭收率(lv)降低了2.88個百(bai)(bai)分(fen)(fen)點(dian)。
實施例1與(yu)對比(bi)例2相比(bi),在一段(duan)反(fan)(fan)(fan)應溫度480℃、劑油(you)比(bi)5.02、反(fan)(fan)(fan)應時間(jian)2.06s和二段(duan)反(fan)(fan)(fan)應溫度490℃、劑油(you)比(bi)5.66、反(fan)(fan)(fan)應時間(jian)2.35s條件下,反(fan)(fan)(fan)應后柴油(you)收(shou)率(lv)提高了(le)1.29個百分點(dian),但(dan)干(gan)氣收(shou)率(lv)降低了(le)0.57個百分點(dian),焦(jiao)炭收(shou)率(lv)降低了(le)1.59個百分點(dian)。
實施例(li)2與對比(bi)例(li)2相比(bi),在一段(duan)反應(ying)溫(wen)度470℃、劑油(you)比(bi)4.59、反應(ying)時間2.12s和二段(duan)反應(ying)溫(wen)度490℃、劑油(you)比(bi)6.87、反應(ying)時間2.33s條(tiao)件下,柴油(you)收率提高了2.69個(ge)百(bai)分點,但干氣收率降低了0.74個(ge)百(bai)分點,焦(jiao)炭收率降低了2.49個(ge)百(bai)分點。
對比例3
參(can)照圖(tu)1,300萬催料在(zai)第(di)一段提(ti)(ti)升(sheng)管4與(yu)再生(sheng)催化(hua)(hua)劑(ji)(ji)(ji)(ji)接觸反(fan)(fan)應(ying)(ying),在(zai)反(fan)(fan)應(ying)(ying)溫度(du)510℃、劑(ji)(ji)(ji)(ji)油比(bi)6、反(fan)(fan)應(ying)(ying)時(shi)間(jian)3.5s條(tiao)件下,反(fan)(fan)應(ying)(ying)后(hou)(hou)(hou)進入(ru)氣固沉降分(fen)離(li)器(qi)和后(hou)(hou)(hou)續分(fen)離(li)系統28;一段得到(dao)的重(zhong)油進入(ru)第(di)二段提(ti)(ti)升(sheng)管19,在(zai)反(fan)(fan)應(ying)(ying)溫度(du)510℃、劑(ji)(ji)(ji)(ji)油比(bi)4、反(fan)(fan)應(ying)(ying)時(shi)間(jian)2.1s條(tiao)件下,反(fan)(fan)應(ying)(ying)后(hou)(hou)(hou)第(di)二段出(chu)口的混合(he)物進入(ru)氣固沉降分(fen) 離(li)器(qi),油氣進入(ru)后(hou)(hou)(hou)續的分(fen)餾系統,第(di)二段提(ti)(ti)升(sheng)管19反(fan)(fan)應(ying)(ying)得到(dao)的重(zhong)油和第(di)一段反(fan)(fan)應(ying)(ying)得到(dao)的重(zhong)油進入(ru)第(di)二段提(ti)(ti)升(sheng)管19反(fan)(fan)應(ying)(ying)。該(gai)實施例中所用的催化(hua)(hua)劑(ji)(ji)(ji)(ji)為催化(hua)(hua)劑(ji)(ji)(ji)(ji)A。具體反(fan)(fan)應(ying)(ying)條(tiao)件和結果見表4。
表4對比例(li)反應條件及反應結果
實施例(li)2與對(dui)比(bi)例(li)3相比(bi),在一(yi)段(duan)反應溫(wen)度470℃、劑油(you)比(bi)4.59、反應時(shi)間2.12s和二段(duan)反應溫(wen)度490℃、劑油(you)比(bi)6.87、反應時(shi)間2.33s條(tiao)件下(xia),柴油(you)收率提高了(le)6.93個(ge)百(bai)分(fen)點,但干氣收率降(jiang)低了(le)2.05個(ge)百(bai)分(fen)點,焦炭收率降(jiang)低了(le)2.67個(ge)百(bai)分(fen)點。
實施(shi)例(li)3與(yu)對比(bi)(bi)例(li)3相比(bi)(bi),在(zai)一(yi)段反(fan)(fan)(fan)應溫度510℃、劑(ji)油比(bi)(bi)5.02、反(fan)(fan)(fan)應時(shi)間2.10s和(he)二(er)段反(fan)(fan)(fan)應溫度530℃、劑(ji)油比(bi)(bi)5.66、反(fan)(fan)(fan)應時(shi)間2.35s條件下,柴油收(shou)率(lv)(lv)提高(gao)了(le)5.80個百分點(dian),但干氣收(shou)率(lv)(lv)降低了(le)1.88個百分點(dian),焦炭收(shou)率(lv)(lv)降低了(le)1.77個百分點(dian)。