CRC－3裂化催化剂被无机钒酸盐中毒活性的考察

ACTIVITY OF CRC-3 CRACKING CATALYSTS POISONED BY INORGANIC SALT VANADATE

采用微反应活性测试（ＭＡＴ）装置，以正庚烷为原料在反应温度为５５０℃和液空速为１０ｈ－１下，考察了ＣＲＣ－３裂化催化剂活性随水蒸汽处理时间的变化规律．模拟工业流化催化裂化（ＦＣＣ）条件，制备了无机钒酸盐中毒的催化剂，进而对其活性进行考察．ＭＡＴ活性评价数据表明，用水蒸汽处理ＣＲＣ－３裂化催化剂１２ｈ以后，其活性趋于平衡；而使ＣＲＣ－３裂化催化剂中毒的无机钒酸盐中钒含量高达０．５％时，催化剂活性将发生明显的变化．

Taking n-Heptane as the feed. under the conditions of the temperature of 550℃ and the liquid space velocity of 10h-1, the regularity of activity of CRC-3 cracking catalysts changing with steam treating times was examined by using micro-activity-test(MAT) equipment. At imitating the condition of industrial fluid catalytic crack (FCC), a series of catalysts poisoned by inorganic vanadate were prepared. The results of MAT showed that the activity of CRC-3 cracking catalyst treated by steam for 12 hours extended to keep balance. The activity of catalyst poisoned by inorganic vanadate with a content of 0. 5% vanadium changed obviously.