乙烷低温储存过程中蒸发气的处理方法及工艺优化

乙烯工业 ›› 2021, Vol. 33 ›› Issue (3): 8-15.

乙烷低温储存过程中蒸发气的处理方法及工艺优化

周鑫

中国石化工程建设有限公司工厂，北京 100101

收稿日期:2021-06-07 修回日期:2021-06-28 出版日期:2021-09-25 发布日期:2021-09-29
作者简介:周鑫，男，2014年毕业于中国石油大学（华东），获工学硕士学位，主要从事油气储运工程设计工作，工程师。

Treatment Method and Process Optimization of Boil Off Gas during Low Temperature Storage of Ethane

Zhou Xin

SINOPEC Engineering Incoporation, Beijing, P.C.100101

Received:2021-06-07 Revised:2021-06-28 Online:2021-09-25 Published:2021-09-29

摘要/Abstract

摘要：

介绍了液化乙烷低温储运过程中其蒸发气（BOG）产生的原因及处理方式，针对其蒸发气再液化回收处理工艺流程能耗较高、液化后返回储罐流体中气相占比较高的问题，提出了工艺优化方案，利用Hysys模拟软件，对优化前后的液化乙烷蒸发气再液化工艺流程进行对比分析。结果表明，优化后的再液化工艺流程能效提高10％，液化后返回储罐流体中气相占比降低50％。

关键词: 液化乙烷蒸发气 , 再液化 , 工艺优化 , 能效

Abstract:

This paper mainly introduces the causes and treatment methods of boil off gas (BOG) during the low temperature storage and transportation of liquefied ethane, and proposes a process optimization scheme to solve the problems of high energy consumption of BOG re-liquefaction process and high percentage of gas phase in the fluid returned to storage tank after liquefaction. HYSYS simulation software is used to simulate and analyze the process flow of liquefied ethane BOG re-liquefaction before and after optimization. The results show that the optimized re-liquefaction process can improve the energy efficiency by 10% and reduce the percentage of gas phase in the fluid returned to storage tank after liquefaction by 50%.

Key words: liquefied ethane BOG, re-liquefaction, process optimization, energy efficiency

周鑫. 乙烷低温储存过程中蒸发气的处理方法及工艺优化[J]. 乙烯工业, 2021, 33(3): 8-15.

Zhou Xin. Treatment Method and Process Optimization of Boil Off Gas during Low Temperature Storage of Ethane[J]. Ethylene Industry, 2021, 33(3): 8-15.