摘要
国内某炼油厂硫磺回收装置首次应用专有气液混合器,通过钠碱湿法烟气脱硫工艺实现尾气超低排放,排放烟气中SO_2浓度为10~25mg/m^3(标准状况),脱硫率大于95%,烟气流量操作范围为0~120%,满足硫磺回收装置各种工况下的尾气超低排放要求。在国内硫磺尾气超低排放处理中首次采用气气换热提升烟气温度,有效减少了冒白烟现象,且解决了烟气管道和设备的硫露点腐蚀问题,同时节能4 950 MJ/h,节水和减排0.64t/h。
A proprietary gas-liquid mixer was first applied in SRU of a refinery.The tail gas ultra-low emissions were achieved through sodium alkali wet flue gas desulfurization process.The concentration of SO 2 in the clean gas is 10-25 mg m 3 with desulfurization rate of≥95%in 0-120%of flue gas flow range.The technology can meet ultra-low emission for tail gas under the various operating conditions of SRU.Gas-gas heat exchanger(GGH)was first applied to tail gas ultra-low emission in domestic SRU,it enhances the flue gas temperature,reduces white mist effectively and solves the problem of sulfur dew point corrosion in flue gas pipelines and equipments.Meanwhile,GGH saves energy 4 950 MJ/h,decreases water 0.64 t h and flue gas emission 840m 3 h.
作者
魏芳
Wei Fang(Xinjiang Huanqiu Engineering Company,Karamay,Xinjiang 833699)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2018年第4期98-100,共3页
Petroleum Processing and Petrochemicals
关键词
硫磺回收
尾气超低排放
湿法脱硫
气液混合器
气气换热
白烟
sulfur recovery
tail gas ultra-low emission
wet flue gas desulfurization
gas-liquid mixer
GGH
white mist
