摘要
为解决沙漠气田原料气温度高(≥60℃)、处理规模大(1200×10^(4)m^(3)/d)且二氧化碳分压低(≤0.5 MPa)而引起的胺液脱碳效果差及装置能耗过高的问题,提出了一种“分流吸收-级间循环冷却”的耦合工艺,利用HYSYS建模并优选出最佳分流比为25%,最佳回流位置为第12层塔板;在此基础上,与常规的一段吸收+(闪蒸+汽提)再生工艺进行对比分析,研究结果表明,在相同工况条件下,分流吸收-级间循环冷却工艺的甲烷损失、轻烃损失较低,获得的净化气流量更高,且更加节能。
In order to solve the problems that amine decarbonization method has a poor effect and the plant consumes high energy because of high temperature(≥60℃),high flow rate(1200×10^(4)m^(3)per day)and low partial pressure of carbon dioxide(≤0.5 MPa)of the raw gas in the desert gas field,a“split absorption-interstage recirculation cooling”coupling process is proposed.Aspen HYSYS software is employed to establish model and optimize the process,and the optimal parameters are obtained as follows:the optimal split ratio is 25%,and the optimal reflux position of the cooling strand is at the 12th stage plate.On this basis,taking the conventional one-stage absorption+(flash+stripping)regeneration process as a reference under the same working conditions,the improved process loses less methane and less light hydrocarbon,gains higher purified gas flow rate and save more energy.
作者
张天娇
刘欣
刘永铎
周军
张青
ZHANG Tian-jiao;LIU Xin;LIU Yong-duo;ZHOU Jun;ZHANG Qing(North China Company,China Petroleum Engineering and Construction Corp.,Renqiu 062550,China;Southwest Petroleum University,Chengdu 610500,China;Hebei Drilling Equipment Manufacturing Branch Company,CNPC Baoji Oilfield Machinery Co.,Ltd.,Renqiu 062550,China)
出处
《现代化工》
CAS
CSCD
北大核心
2024年第12期215-219,共5页
Modern Chemical Industry
基金
国家自然科学基金项目(51704253)。
关键词
胺法
天然气脱碳
高温
二氧化碳分压
分流
循环冷却
工艺流程
节能
amine method
natural gas decarbonization
high temperature
carbon dioxide partial pressure
shunt
recirculation cooling
process flow
energy saving
