FCC镁铝尖晶石硫转移剂的脱硫效果及稳定性研究  

Desulfurization rate and stability of magnesia-alumina spinel sulfur transfer additive

作　　者：崔秋凯[1,2] 冉晓丽[1] 许孝玲[1] 张强[1] 李春义[1] 山红红[1] 

机构地区：[1]中国石油大学(华东)重质油国家重点实验室,山东东营257061 [2]中国石油大港石化分公司,天津300280

出　　处：《石化技术与应用》2008年第6期536-540,共5页Petrochemical Technology & Application

基　　金：中国石油天然气股份有限公司资助项目(项目编号:07-03-G6)

摘　　要：采用固定床吸附和提升管循环流化床连续反应再生2种手段,对镁铝尖晶石型硫转移剂的脱硫率及脱硫稳定性进行了研究。结果表明,单独对硫转移剂进行水热处理,在800℃,100%水蒸气条件下,脱硫率与老化前的变化趋势相同,在63 min内都能保持100%的脱硫率;而将催化裂化催化剂与硫转移剂一起进行水热处理,在750℃以上,100%水蒸气条件下,脱硫率会明显下降。提升管循环流化床连续运转实验表明,以抚顺常压渣油为原料,添加质量分数为2%的新鲜硫转移剂,连续运转167 h,脱硫率稳定,保持在88%以上,且基本不影响产物分布。The desulfurization rate and stability of the magnesia - alumina spinel sulfur transfer additive was studied in the fixed - bed adsorption and riser recyclingbed units. The results showed that the varying tendency desulfurization rate was similar to untreated additive and was kept to 100% in the first 63 min, when the sulfur transfer additive was treated alone under 800℃ and 100% steam. However,if the additive was treated with FCC catalyst together, the activity of the sulfur transfer additive treated above 750℃ droped markedly, the other way round, the drop of activity was tiny. Using Fushun atmospheric residue as feedstock sulfur transfer additi desulfurization rate ous running of 167 product distribution , adding mass fraction of 2% of ve in the riser recycling unit, the was very stable during continuh and more than 88% , and the was not affected.

关 键 词：催化裂化 硫转移剂 镁铝尖晶石 稳定性 

分 类 号：TE624.41[石油与天然气工程—油气加工工程]