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一、两种吸收工艺介绍1甲醇吸收工艺流程简述在高压吸收塔、低压吸收塔中,利用各组份在吸收剂中溶解度的差别和低温冷凝的原理,采用高压吸收和低温吸收工艺,分别将来自合成工段的高压尾气、来自精馏工段和催化剂制备工段的低压尾气中的有用组份,主要是对碘甲烷加以回收利用。吸收工段由高压吸收塔、低压吸收塔、再生塔、高压吸收冷却器、低压吸收冷却器、贫液冷却器、再生塔再沸器、吸收送料泵、再生塔加料泵等设备和相连的管道、阀门、仪表组成。
First, two kinds of absorption process introduction A Brief introduction of methanol absorption process High pressure absorption tower, low pressure absorption tower, the use of various components in the absorbent solubility difference and the principle of low temperature condensation, the use of high pressure absorption and low temperature absorption process, respectively, The high-pressure tail gas from the synthesis section, the useful components of the low-pressure tail gas from the rectification section and the catalyst preparation section, is mainly for the recovery of methyl iodide. Absorption section from the high-pressure absorber, low pressure absorber tower, regeneration tower, high pressure absorption cooler, low pressure absorption cooler, lean liquid cooler, regeneration tower reboiler, absorption feed pump, regeneration tower feed pump and other equipment and connected pipes, Valve, instrument composition.