根据原料性质和组成特点选择催化剂的研究

选用了 4种不同类型分子筛和基质的新鲜催化剂 ,在水气氛下进行高温老化 ,并对老化后的催化剂进行了性质表征。结果表明 ,催化剂Reduxion 6 0、RHZ 2 0 0和RHZ 30 0在老化后仍具有较高的结晶度、合适的比表面积和孔径 ,并具有好的产物分布和产物选择性。在重油微反装置上对胜华催化原料与 5种催化剂进行了最佳配伍实验。结果表明 ,催化原料与催化剂之间存在配伍关系 ,对于孤岛和草桥蜡油选用Reduxion 6 0催化剂可以获得较高的轻油收率和总液收率 ;对于奥里蜡油 ,选用RHZ 2 0 0和RHZ 30 0催化剂可以获得较为理想的产物分布、高的轻油收率和较低的焦炭产率。

Selectivity of catalyst aged at high temperature

Four fresh catalysts with different kinds of molecular sieve and matrix materials were aged under the conditions of bain-marie and high temperature. The properties of these aged catalysts show that the aged Reduxion-60, RHZ-200 and RHZ-300 catalysts have higher degree of crystallinity, suitable specific surface area and diameter of pore, so the three aged catalysts should have better product distribution and selectivity. The compatibility of the feeds of Shenghua catalytic cracking unit with five kinds of cracking catalysts was studied by means of a heavy oil micro-reaction unit. The result shows that Reduxion-60 catalyst has good product selectivity and high yield of light oil and is suitable for cracking vacuum gas oil of the mixture of Gudao and Caoqiao oils. The compatibility of catalysts RHZ-200 and RHZ-300 is favorable for cracking vacuum gas oil of Aoli.