| abstract |
Provided is a reactor and a continuous rectification reaction method, comprising the following steps: preheating adipic acid, ammonia gas and nitrogen gas respectively, and the preheating temperature is 150-220°C; preheating adipic acid, ammonia gas and nitrogen gas Passing into the fluidized bed reactor to carry out the ammoniation synthesis reaction to obtain a high-temperature mixed product containing adiponitrile, ammonia, water and by-products; in the atmospheric distillation column, at 220-240 ° C, under the condition of atmospheric pressure , process the high-temperature mixed product, separate and remove the gas phase components including ammonia and water to obtain crude adiponitrile; rectify the crude adiponitrile in a negative pressure rectifying tower to obtain purified adiponitrile, the rectification temperature It was set at 200°C and the pressure was 0.01MPa. Through the technical scheme of the present invention, not only can the side reaction of adiponitrile be suppressed in the purification process, but also energy consumption and side reaction can be reduced, and the yield of the target substance can be improved. |