某炼油厂Chlorsorb单元的运行及改造分析

针对某炼油厂连续重整部分的改造过程,分析了Chlorsorb氯吸附技术在实际运行过程中存在的主要问题,包括重整催化剂比表面积下降加剧,放空气冷却器出口端腐蚀,放空气排放超标,讨论了2种固体脱氯方案,采用中国石化石油化工科学研究院研制的GL-1脱氯剂对再生烟气进行脱氯,提出了采用固体脱氯技术取代Chlorsorb氯吸附技术,脱除放空气中的HCl,消除HCl对连续重整装置的腐蚀影响,避免了高含水率再生烟气与催化剂接触,使放空气中HCl和非甲烷总烃含量符合GB 31570—2015石油炼制工业污染物排放标准要求,保证了装置的平稳运行。

OPERATION AND MODIFICATION ANALYSIS OF CHLORSORB ADSORPTION UNIT IN A REFINERY

The problems in Chlorsorb chlorine adsorption process in a continuous catalytic reforming unit in a refinery were analyzed, where the reforming catalyst surface area declines accelerately, discharge gas cooler outlet corrosion and discharge emission beyond standards occurs. Two kinds of solid dechlorination schemes are discussed, which use the antichlor GL-1 developed by SINOPEC Research Institute of Petroleum Processing for dechlorination of regenerated flue gas. In order to remove the HCl in the discharge gas to eliminate the influence of HCl on corrosion of the unit and avoid the catalyst from contacting with regenerated flue gas with high water content and make the discharge gas in compliant with the new regulations for HCl and non methane hydrocarbons, a solid dechlorination technology instead of Chlorsorb dechlorination process is suggested.