摘要
利用HYSYS软件对中国石油化工股份有限公司镇海炼化分公司Ⅰ号催化裂化干气、液化石油气脱硫及配套溶剂再生装置进行流程模拟,运用软件自带Amine Pkg流体物性包中Li-Mather方法进行稳态模拟,对影响脱硫装置净化干气硫化氢超标的原因进行技术分析,得出了因胺液净化器投用,胺液系统热稳态盐含量大幅下降,贫胺液浓度过低,最终导致再生效果不佳是净化干气硫化氢超标的主要原因。同时对装置进行节能优化,找出影响再生塔底重沸器热负荷的因素。对低盐胺液系统,当贫胺液浓度维持30%~35%、进料温度维持90~100℃、贫胺液中H_2S质量浓度为1.0~1.5 g/L时,既能满足产品质量需求,又能达到节能降耗目的。
The software HYSYS has been applied in the process simulation of desulfurization and associated solvent regeneration of dry gas and LPG systems of No. I FCC unit in SINOPEC Zhenhai Refining Chemical Co.,Ltd.. The more strict Li-Mather method was used for stable modeling. It is concluded from technical analysis of over-specifications of hydrogen sulfide in purified dry gas of desulfurization unit that the main culprits were low amine concentration due to great reduction of thermal stable salts because of operation of amine liquid purifier. The optimization for energy saving was made for the unit,and impact factors for energy saving and consumption were found out. In the low-salt liquid amine system,the product quality specifications and energy saving objectives can be met when the liquid amine in the salt system is maintained at about 30% - 35%,the feed temperature is controlled at 90 - 100 ℃ and H2S in lean liquid is maintained at 1. 0 -1. 5 g/L. No MDEA is needed.
出处
《炼油技术与工程》
CAS
2017年第12期18-23,共6页
Petroleum Refinery Engineering
关键词
溶剂再生
流程模拟
MDEA
贫胺液
富液
硫化氢
脱硫
solvent regeneration, process simulation, MDEA, lean liquid, rich liquid, H2S, desulfurization
