recovery tower

It showed that the propane recovery rate of new process would be 23%~ 27% higher than that of cryogen refrigeration process at the same refrigeration temperature. To increase the absorption tower pressure appropriately was good to improve the propane recovery rate.

本文实例研究表明：相同制冷温度下，冷剂制冷-油吸收复合工艺的丙烷回收率比原冷剂制冷工艺可提高23%～27%。

This paper analyzes reasons of methanol content exceeding standard in tail gas of the rectifying system of methanol plant, summarizes the operating conditions of the recovery tower of methanol tail gas, points out the existing problem and improving methods.

分析甲醇装置精馏系统尾气中甲醇含量超标原因，对甲醇尾气回收塔运行工况进行总结，指出存在的问题及今后改进的方向。

Analysis of operating conditions of methanol rectifying tail gas recovery tower

甲醇精馏尾气回收塔改造运行分析

Owing to the particular capacity distribution between the' gas and liquid phases in the recovery tower, floating valve trays should be displaced with tower packings;

因气液相负荷分布特殊，回收塔可采用填料塔代替浮阀塔；

The energy saving problem on dimethyl formamide ( DMF) recovery equipment of wet-process PU leather plant is discussed. The domestic conventional two-tower recovery equipment is compared with the energy-save two-tower recovery equipment.

对湿法PU革工厂二甲基甲酰胺（DMF）回收装置的节能问题进行探讨，对国内使用的传统双塔DMF回收装置与节能型的双塔DMF回收装置进行了比较。