天然气净化厂尾气SO2减排工艺探讨  

Discussion on SO2 Emission Reduction Technology of Tail Gas from Natural Gas Purification Plant

作　　者：蒋欣 万群峰 潘弘 卢海东 郭瑜 Jiang Xin;Wan Qunfeng;Pan Hong;Lu Haidong;Guo Yu(Institute of Petroleum and Natural Gas Engineering,Chongqing College of Science and Technology,Chongqing,400000;Chongqing Yuchuan Gas Co.,Ltd.,Chongqing,400000;Northeast Sichuan Gas Mine,PetroChina Southwest Oil and Gas Field Company,Sichuan,635000)

机构地区：[1]重庆科技学院石油与天然气工程学院,重庆400000 [2]重庆市渝川燃气有限责任公司,重庆400000 [3]中国石油西南油气田公司川东北气矿,四川635000

出　　处：《当代化工研究》2020年第12期110-111,共2页Modern Chemical Research

基　　金：重庆市研究生科技创新资助项目(YKJCX1820121)。

摘　　要：随着国家政策对环境问题的日益重视,天然气净化厂硫磺回收及尾气处理装置面临更加严格的尾气排放标准.为此,总结了现阶段国内天然气净化厂尾气处理装置SO2排放情况,并基于工艺特点及技术经济条件,对还原吸收工艺、氧化吸收工艺、碱法脱硫工艺和络合铁液相氧化还原工艺四类尾气处理工艺进行了对比分析.从理论上建立总硫回收率与SO2排放浓度关系,提出了尾气处理工艺技术适用界限,为净化厂尾气排放达标提供理论支撑.With the increasing emphasis on environmental issues in national policies,sulfur recovery and tail gas treatment units in natural gas purification plants are facing stricter tail gas emission standards.Therefore,SO2 emission from tail gas treatment plants in domestic natural gas purification plants at present is summarized.Based on process characteristics and technical and economic conditions,this paper compared and analyzed four types of tail gas treatment processes,namely reduction absorption process,oxidation absorption process,alkali desulfurization process and complex iron liquid phase oxidation reduction process.The relationship between total sulfur recovery rate and SO2 emission concentration is theoretically established,and the applicable limit of tail gas treatment technology is proposed,which provides theoretical support for the emission standard of tail gas from purification plants.

关 键 词：天然气净化厂 尾气处理工艺 硫磺回收率 SO2减排 

分 类 号：X743[环境科学与工程—环境工程]