天然气脱轻烃系统混合制冷剂影响规律及优化  

Influence law and optimization of mixed refrigerant for natural gas light dehydrocarbon removal system

作　　者：李开宇 朱静东 江伟平 郭戈 白江涛 刘桂莲[1] LI Kaiyu;ZHU Jingdong;JIANG Weiping;GUO Ge;BAI Jiangtao;LIU Guilian(School of Chemical Engineering and Technology,Xi’an Jiaotong University,Xi’an 710049,China;PetroChina Changqing Oilfield(Yulin)Oil and Gas Co.,Ltd.,Yulin 719000,China)

机构地区：[1]西安交通大学化学工程与技术学院,陕西西安710049 [2]中国石油长庆油田(榆林)油气有限公司,陕西榆林719000

出　　处：《石油化工》2023年第6期763-770,共8页Petrochemical Technology

基　　金：国家自然科学基金项目(22078259)。

摘　　要：对天然气脱轻烃系统的主冷箱传热温差与混合制冷剂组成的关系进行了系统的研究,依据主冷箱冷热流股复合曲线及传热温差探讨了各制冷剂组分对不同温度区间传热温差的影响规律,确定了满足主冷箱温差要求的混合制冷剂组成调整策略。并采用Aspen Hysys(V10)流程模拟软件建立混合制冷剂循环制冷模型,对某公司天然气脱轻烃系统的混合制冷剂组成进行分析,确定了最佳的混合制冷剂组成和相关参数,优化后主冷箱最大传热温差降低3.4905℃,功耗降低23.17%。The relationship between the heat transfer temperature difference of the main cold box and the composition of the mixed refrigerant in the natural gas light hydrocarbon removal system was systematically studied.Based on the composite curve of cold and hot stream in the main cold box and the heat transfer temperature difference,the influence of each refrigerant component on the heat transfer temperature difference in different temperature ranges was explored,and the adjustment strategy for the composition of the mixed refrigerant that meets the temperature difference requirements of the main cold box was determined.A mixed refrigerant cycle refrigeration model was established using Aspen Hysys(V10)process simulation software,by which the composition of the mixed refrigerant in the natural gas light dehydrocarbon system of a company was analyzed,and the optimal composition of the mixed refrigerant and related parameters were determined.After optimization,the maximum heat transfer temperature difference of the main cold box was reduced by 3.4905℃,and the power consumption was reduced by 23.17%.

关 键 词：混合制冷剂 冷箱 传热温差 功耗 模拟 优化 

分 类 号：TQ021.8[化学工程]