煤化工项目硫回收及尾气处理工艺技术分析

Technology Analysis of Sulfur Recovery and Tail Gas Treatment in Coal Chemical Project

为满足排放指标,保护环境,响应国家环保要求,硫回收装置不可或缺。本文主要讲述了煤化工行业硫回收及尾气处理装置的相关工艺技术。目前煤化工行业中的硫回收装置主要呈现装置规模偏小、酸气浓度偏低且波动大、气源不足等特点。国内外主流的硫回收工艺有克劳斯三级、超优克劳斯、还原吸收法、生物脱硫、WSA、亚露点工艺等。

In order to meet the emission targets and protect the environment,the sulfur recovery unit is indispensable.This paper mainly describes the related technology of Sulfur Recovery and tail gas treatment unit in coal chemical industry.At present,the sulfur recovery units in coal chemical industry are characterized by small scale,low acid gas concentration,large fluctuation and insufficient gas source.The main sulfur recovery processes at home and abroad are Kraus,Super Claus,reduction and absorption,biological desulfurization,WSA,sub-dew point process.