发明名称 |
Method for stopping ammoxidation reaction |
摘要 |
An object of the present invention is to provide a method for, when stopping an ammoxidation reaction of propane, stopping the ammoxidation reaction safely and quickly, without causing a deterioration in catalytic activity or acrylonitrile yield. The method for stopping an ammoxidation reaction includes a supply stopping step of stopping a supply of propane, an oxygen-containing gas, and ammonia to a reactor where an ammoxidation reaction of propane is being carried out using a catalyst, and a reaction stopping step of supplying an inert gas to the reactor in an amount 10 to 300 times the catalyst volume per hour until the catalyst temperature reaches 380° C. or less, wherein after the supply stopping step, a time required until the catalyst temperature decreases to 360° C. or less is within 10 hours. |
申请公布号 |
US9346747(B2) |
申请公布日期 |
2016.05.24 |
申请号 |
US201314430714 |
申请日期 |
2013.09.13 |
申请人 |
ASAHI KASEI CHEMICALS CORPORATION |
发明人 |
Tamura Sho;Shoji Sadao |
分类号 |
C07C253/24 |
主分类号 |
C07C253/24 |
代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. A method for stopping an ammoxidation reaction comprising:
a supply stopping step of stopping a supply of propane, an oxygen-containing gas, and ammonia to a reactor where an ammoxidation reaction of propane is being carried out using a catalyst comprising Mo, V, Nb, and Sb; and a reaction stopping step of supplying an inert gas to the reactor in an amount 10 to 300 times the catalyst volume per hour until a catalyst temperature reaches 380° C. or less, wherein after the supply stopping step, a time required until the catalyst temperature decreases to 360° C. or less is within 10 hours. |
地址 |
Tokyo JP |