摘要
分别以FCC催化剂、石英砂、碱性铝酸钙为接触剂,在流化床反应器上对胜利减压渣油进行裂解-气化实验,考察接触剂的性能,优化裂解工艺条件。另外,在800℃下,将铝酸钙上的沉积焦炭与水蒸气、氧气反应转化为合成气,考察焦炭气化转化率及气化产物组成。结果表明:与FCC催化剂和石英砂相比,碱性铝酸钙能抑制结焦,提高液相产物收率;当反应温度为600℃,剂/油质量比及水/油质量比分别为8.1、0.5时,减压渣油转化率可达95.12%,液相产物收率达67.27%,而焦炭产率仅为8.39%;铝酸钙上的焦炭转化率在95%以上,生成的合成气中H2体积分数高达47.69%。
FCC catalyst,quartz sand and base calcium aluminate were used as contact agents to investigate Shengli vacuum resids cracking-gasification using a fluidized bed reactor.Performance of different contact agents and the optimum cracking operation conditions were investigated.In addition,the coke formed on calcium aluminate was used to react with water vapor and oxygen to form syngas.Coke gasification conversion ratio and gasification products composition were also studied.Experimental results show that,compared with FCC catalyst and quartz sand,base calcium aluminate could inhibit coke yield and improve liquid yield.At the temperature of 600℃,agent/oil mass ratio 8.1 and water/oil mass ratio 0.5,vacuum resids conversion ratio can be 95.12%,liquid product yield 67.27%,and coke yield only 8.39%.Coke conversion ratio on calcium aluminate is above 95%,and the H2 volume fraction in the produced synthesis gas can be as high as 47.69%.
作者
王荣斌
WANG Rongbin(Petrochemical Company of Shaanxi Yanchang Petroleum(Group)Company,Yan’an 727406,China)
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2021年第2期384-390,共7页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
减压渣油
铝酸钙
裂解
气化
vacuum resids
calcium aluminate
cracking
gasification
