间二甲苯氨氧化催化剂工业化改进试验研究

Study on the improvement of m-xylene ammoxidation catalyst

以扩孔、灼烧后的改性硅胶作为载体，将含有V、Cr、Mo、P、K的活性组份物均匀浸渍于载体上，得到V—Cr-Mo-P-K系间二甲苯氨氧化催化剂（NT08#），在100t／a间苯二甲腈中试装置进行生产试验，流化反应床特征反应温度（浓2#）390-400℃，投料比（摩尔比）空气：氨：间二甲苯=38：7：1，产品收率达到了91．3％。

Using the improved silica gel as cartier, dipping the multiple active ingredients which included V, Cr, Mo, P, K components in the cartier, then the V-Cr-Mo-P-K series m-xylene ammoxidation catalyst （NT08#） were obtained. The productive experiment was carried on the 100 t/a isophthalonitrile produce line,the characteristic reaction temperature of the fluid-bed reactor was 390 -400 ℃ ,the material molar ratio of air ： ammonia ： m-xylene was 38 ： 7 ： 1. The result showed that the yield of isophthalonitrile could reach 91.3%.