尿素装置常压吸收系统的改造

Renovation of the Atmospheric Absorption System in Urea Plant

按尿素装置增产改造 10 %～ 15 %改造方案 ,将常压系统中部循环吸收泵取消 ,改为中部、顶部均用经过冷却的低浓度的氨水作吸收液 ,同时将鲍尔环填料更换成八角内四弧环填料 ,效果显著。

In order to increase the output of urea by 10%～15% to meet the renovation requirement, the middle circulating absorption pump is moved out of the atmospheric absorption system, and cooled low concentration ammonia water is used as absorbent, added into the top and middle part of the tower and eight angle ring packing with four arc inside is used instead of Baul ring packing. The result of renovation is very conspicuous.