加氢精制催化剂浸渍硫化剂工艺条件的影响  

EFFECT OF IMPREGNATING SULFURIZING AGENT CONDITIONS ON THE PRESULFIDED CATALYST

作　　者：崔军明[1,2] 张志华[3] 王德秋[1] 邹丹 

机构地区：[1]大庆石油学院,大庆163411 [2]大庆炼化公司 [3]大庆化工研究中心 [4]大庆石化工程有限公司

出　　处：《石油炼制与化工》2010年第5期48-52,共5页Petroleum Processing and Petrochemicals

摘　　要：用FCC汽油和单质硫合成硫化烯烃后再与单质硫混合制成硫化剂,将其用于浸渍预硫化加氢精制催化剂,考察浸渍工艺条件对预硫化催化剂的硫保留度、硫化度、催化剂破碎率等的影响规律。采用气相间歇活化法对预硫化催化剂进行活化。结果表明,单质硫与硫化烯烃的摩尔比为1:1、浸渍前先制成混合硫化剂方法浸渍效果较好。适宜的浸渍条件为:混合硫化剂加入量为催化剂完全硫化理论需硫量的1.4倍,温度为170℃,浸渍时间为3h,单质硫与硫化烯烃含硫量的摩尔比为1:1。添加助剂的催化剂硫含量和硫保留度均高于不加助剂催化剂。用100mL加氢精制装置对器内和器外两种方法硫化的催化剂进行加氢反应活性评价,结果表明,两种硫化工艺硫化的催化剂活性相当。A sulfurizing agent was prepared by mixing sulfur with sulfided olefin, which was prepared from FCC gasoline and sulfur. Presulfided hydrofining catalysts were impregnated by this sulfurizing agent, and the effect of impregnation conditions on the sulfur content, sulfur retention rate and catalyst broken rate of the presulfided catalyst was investigated. The presulfided catalyst was activated by gas-phase batch sulfurization.Experimental results indicated that impregnation scheme by using a pre-mixing sulfur and sulfided olefin mixture with a sulfur to sulfided olefin （based on sulfur content） molar ratio of 1 was preferredrr The optimum impregnation conditions were as follows, the amount of mixed sulfurizing agent should be 1.4 times of the theoretical sulfur requirement for catalyst to be fully sulfurized, impregnating at 170 ℃ for 3 h, the sulfur to sulfided olefin molar ratio （based on sulfur content） should be 1. Sulfur content and sulfur retention rate of presulfided catalyst added addition agent was higher than that of without addition agent. Comparison tests between in-situ and ex-situ sulfidation of catalyst were carried out on a 100 mL hydrotreating device and the results showed that the activities of catalysts by in-situ and ex-situ sulfidation were almost the same.

关 键 词：加氢催化剂 器外预硫化 浸渍 单质硫 硫化烯烃 

分 类 号：TE624.4[石油与天然气工程—油气加工工程]