Influence of heavy hydrocarbons in mixed refrigerant on natural gas liquefaction processes

JIA Rong; LIN Wensheng

doi:10.11949/j.issn.0438-1157.20151087

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Influence of heavy hydrocarbons in mixed refrigerant on natural gas liquefaction processes

更新时间：2025-12-10

- Influence of heavy hydrocarbons in mixed refrigerant on natural gas liquefaction processes
- CIESC Journal Issue S2, Pages: 379-386(2015)
- 作者机构：
  
  上海交通大学制冷与低温工程研究所,上海,200240
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151087
  CLC： Q026.1
- Online First：31 August 2015，
  
  Published：31 August 2015
- 稿件说明：
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JIA Rong, LIN Wensheng. Influence of heavy hydrocarbons in mixed refrigerant on natural gas liquefaction processes[J]. CIESC Journal, 2015, (S2): 379-386.
DOI：

JIA Rong, LIN Wensheng. Influence of heavy hydrocarbons in mixed refrigerant on natural gas liquefaction processes[J]. CIESC Journal, 2015, (S2): 379-386. DOI： 10.11949/j.issn.0438-1157.20151087.

摘要

混合制冷剂(MR)组分是影响天然气液化流程性能的最重要因素之一。在某些特定的液化天然气(LNG)装置中

丁烷和戊烷等重组分不受欢迎。研究了以下4种混合制冷剂组分用于单混合制冷剂(SMR)流程的效果:含有异丁烷(C4)和异戊烷(C5)的MR;不含C4的MR;不含C5的MR;不含C4和C5的MR。对各流程的比功耗进行了对比。结果表明

相比于异丁烷

异戊烷对降低能耗的贡献更大;另外

工况1的能耗比工况4低18%。更进一步地

提出了采用不同制冷剂进行预冷的SMR流程。对于工况4

采用丙烷预冷的流程能耗可降低12%。

Abstract

Mixed refrigerant(MR)component is one of the most important factors that influence the performance of natural gas liquefaction process.In certain kinds of liquefied natural gas(LNG)plants

heavy hydrocarbons in MR

such as butane and pentane

are not welcome.In this paper

four kinds of MR components have been used in the single mixed refrigerant(SMR)process:MR with both i-butane(C4)and i-pentane(C5); MR without C4; MR without C5; MR without C4 and C5.The specific power consumption has been compared.The results show that compared with i-butane

i-pentane has greater contribution to the decline of power consumption and that the power required in condition 1 is 18% less than that in condition 4.Furthermore

the SMR liquefaction processes with different pre-cooling refrigerants have been proposed.Compared with condition 4

there is a 12% decline in power consumption for the process with propane pre-cooling.

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