甲苯氧化生产苯甲酸及其副产物的尾气处理

Benzoic Acid Production through Toluene Oxidation and its By-product Tail Gas Treatment

在甲苯氧化法生产苯甲酸、苯甲酸制粒及副产品处理过程中,都会产生大量的高VOCs和刺激性气味尾气,对环境造成极大影响,影响生产单位的环保指标达标,同时也会造成原料或者产品的极大浪费。针对此生产过程中所涉及到的氧化装置通风尾气、精馏装置抽真空尾气、刮片除尘系统尾气等3种尾气的处理方法分别进行归纳和总结,得出了最优解决方案组合。

During benzoic acid production through toluene oxidation,granulation of benzoic acid and by-product treatment,a great amount of VOCs and tail gas with pungent smell is produced.It causes great impact to the environment,leads to the failure of producers to meet environment protection indices and results in great loss of raw material or products.This paper summarizes the treatment methods for the three tail gases,namely the tail gas from the oxidation plant ventilation,tail gas from vacuum pumping of rectification plant and tail gas from the dust removal system of scraper,and obtains best combination of solutions.