CAJ | 학술논문

根据两段提升管催化裂解多产丙烯(TMP)技术特点,针对某炼化公司分馏及吸收稳定系统存在的轻汽油切割不清晰的问题,提出吸收稳定系统催化汽油切割流程,提高了丙烯收率并有效降低了汽油产品烯烃含量.结合某炼化公司TMP技术工业化试验,用化工流程模拟方法对新流程进行现场条件下模拟研究,优选了新流程操作工艺,试验装置标定显示:相对现有工艺,汽油产品烯烃的体积分数由50%以上降至35%以下,达到国标II类环保标准;丙烯质量收率达21.28%,较常规流程提高1.64%;稳定塔塔底稳定汽油余热作为汽油切割塔塔釜热源,不增加外来高品位热量消耗,提高了装置低温热利用率,达到节能降耗的目的.因此,新流程能够有效解决TMP技术应用存在的轻汽油切割不清晰的问题,通过优化进入二段提升管反应器回炼轻汽油的组成,达到提高装置丙烯收率、降低汽油产品烯烃含量并且节能降耗的目标.
근거량단제승관최화렬해다산병희(TMP)기술특점,침대모련화공사분류급흡수은정계통존재적경기유절할불청석적문제,제출흡수은정계통최화기유절할류정,제고료병희수솔병유효강저료기유산품희경함량.결합모련화공사TMP기술공업화시험,용화공류정모의방법대신류정진행현장조건하모의연구,우선료신류정조작공예,시험장치표정현시:상대현유공예,기유산품희경적체적분수유50%이상강지35%이하,체도국표II류배보표준;병희질량수솔체21.28%,교상규류정제고1.64%;은정탑탑저은정기유여열작위기유절할탑탑부열원,불증가외래고품위열량소모,제고료장치저온열이용솔,체도절능강모적목적.인차,신류정능구유효해결TMP기술응용존재적경기유절할불청석적문제,통과우화진입이단제승관반응기회련경기유적조성,체도제고장치병희수솔、강저기유산품희경함량병차절능강모적목표.
Based on technical characteristics of two-stage riser for maximizing propylene(TMP)technology in fluidiged catalytic cracking unit(FCCU),light/heavy gasoline separator was set in the absorber-stripper-stabilizer system to have light gasoline distilled from the stabilized gasoline re-cracked in the second stage riser to decrease gasoline product olefin content and maximize unit propylene yield.Considering the industrial data from the original pilot unit of one refinery in China,further research Was carried out on the new process using the process simulating method to optimize process operating conditions.Field data from the optimized industrial pilot unit showed that gasoline product olefin content decreased from more than 50%to less than 35%,meeting China environmental standards II.The propylene yield was 21.28%,1.64%higher than that of the primary design.Stabilized gasoline stream from the stabilizer bottom served as heat source for the bottom reboiler of the new light/heavy gasoline separator.Therefore.energy consumption of the new process was not increased and system residual heat utilization ratio Was improved.Conelusions are drawn that the new process proposed can optimize components of light gasoline remarkably that is re-cracked in the second stage riser in TMP technology,and thus can improve unit propylene yield,decrease gasoline product olefin content effectively,without increasing unit energy consumption.