250
石油与天然气化工
CHEMICAL ENGINEERING OF OIL & GAS
电加热器再热技术在硫磺回收装置上的应用
王小强’邱斌’赵柳鉴’高健文陈亮’田梦雯’黄暄”
(1中国石油西南油气田公司重庆天然气净化总厂2．中国石油西南油气田公司物资公司）
2014
摘要根据重庆天然气净化总厂萘江分厂硫磺回收装置的运行现状与特点，对过程气再热方式进行了选择。分析了高温掺和法、在线加热炉加热法、蒸汽加热法、气气换热法、电加热法的优缺点，确定采用能源供应方便，结构紧漆，自动控制温度，探作商便，无污染的电加热器进行过程气再热。结论表明，在硫磺回收装置低负荷运行的条件下，过程气采用电加热技术，可确保系统温度在正常范围内，使硫磺回收装置运转正常。同时，对电加热器设备运行的常见问题和异常情况进行了分析和总结。
关键词硫磺回收过程气电加热器再热
中图分类号：TE974+.2文献标志码：ADOI：10.3969/j.issn.1007-3426.2014.03.007 Application of electric heater reheat technology on sulfur recovery unit
Wang Xiaoqiang', Qiu Bin', Zhao Liujian',Gao Jianwen',Chen Liang',Tian Mengwen',Huang Xuan
(l.Chongqing Natural Gas Purification Plant General ,PetroChina Southwest Oil &Gasfield Company,Chongqing 401433,China; 2.Materials Company, PetroChina Southwest Oil & Gasfield Company,Chengdu 610200, Sichuan, China)
Abstract : Aiming at current situations and characteristics of the sulfur recovery unit in Qijiang Branch , the process gas reheating methods were determined . The advantages and disadvantages of five kinds of reheat methods technology were analyzed including high temperature mixed , re. heating furnaces , steam heating , gas-gas heat exchanger and electric heater . The electric heater was finally determined because of the advantage of convenient energy service , compact structure , automatic temperature control, simple operation and no pollution. The Results showed that sys-tem temperature was in normal range and sulfur recovery unit ran properly when the sulfur re . covery unit operated at low load . Meanwhile , the common problems and abnormal situations of electric heater were analyzed and summarized .
Key words : sulfur recovery , process gas , electric heater, reheat
随着全球环保要求的日趋严格，进一步提高硫磺回收装置硫磺回收率，减少尾气中SO2排放量受到普遍重视]。在Claus硫磺回收工艺中，需要对过程气采取直接或间接的加热方式以达到催化反应器所需的进口温度。过程气加热方式的选择是否
合适将直接影响硫磺回收装置的长周期稳定运行，如何根据硫磺回收装置的特点，合理选择和利用过程气加热方式是工程设计人员和生产技术人员需要重视的问题。目前，电加热器再热技术在气田采气管线伴热、甲醇氢回收装置、石化、炼化硫磺回收装
作者简介：王小强（1982一），男，四川剑阁人，2007年7月毕业于西南石油大学化学工程与工艺专业，工程师，现任职于中国石油西南油气田公司重庆天然气净化总厂素江分厂，主要从事天然气净化生产技术管理工作。地址：（401433)重庆市江区篆塘镇南街98号。电话：023-48228032。E-mail；xoqgboy@163.com