Energy efficiency and economic evaluation of coupled natural gas hydrate exploitation and reforming hydrogen production system

JIANG Wei; WANG Mengying; DENG Chun; CHEN Guangjin

doi:10.12434/j.issn.2097-2547.20240087

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Energy efficiency and economic evaluation of coupled natural gas hydrate exploitation and reforming hydrogen production system

- Energy efficiency and economic evaluation of coupled natural gas hydrate exploitation and reforming hydrogen production system
- Vol. 49, Issue 9, Pages: 26-32(2024)
- 作者机构：
  
  1.中国石油大学(北京) 化学工程与环境学院,重质油全国重点实验室,北京 102249
  2.中石化石油化工科学研究院有限公司,北京 100083
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240087
  CLC： TQ021.8
- Published：25 September 2024，
  
  Received：05 March 2024，
  
  Revised：19 April 2024，
- 稿件说明：
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江苇,王梦颖,邓春等.天然气水合物开采耦合重整制氢系统的能效和经济性评价[J].低碳化学与化工,2024,49(09):26-32.

JIANG Wei,WANG Mengying,DENG Chun,et al.Energy efficiency and economic evaluation of coupled natural gas hydrate exploitation and reforming hydrogen production system[J].Low-carbon Chemistry and Chemical Engineering,2024,49(09):26-32.
江苇,王梦颖,邓春等.天然气水合物开采耦合重整制氢系统的能效和经济性评价[J].低碳化学与化工,2024,49(09):26-32. DOI： 10.12434/j.issn.2097-2547.20240087.

JIANG Wei,WANG Mengying,DENG Chun,et al.Energy efficiency and economic evaluation of coupled natural gas hydrate exploitation and reforming hydrogen production system[J].Low-carbon Chemistry and Chemical Engineering,2024,49(09):26-32. DOI： 10.12434/j.issn.2097-2547.20240087.

摘要

为提高天然气水合物开采耦合重整制氢系统能效，对该系统进行了工艺设计及建模，并建立了能效评估和经济性分析模型。围绕重整过程中燃料供热或电重整的选择，电重整中是否集成海上风电，H

分离过程中膜分离或醇胺法的选择，对比了不同技术方案下系统的㶲效比和年度总费用。结果表明，系统C重整单元采用电重整，未集成海上风电，分离单元采用膜分离，其㶲效比最高（2.25）。系统B重整单元采用燃料供热，分离单元采用膜分离，年度总费用最低（5803.91 × 10

CNY/a）。系统F集成了海上风电，分离单元采用醇胺法，年度总费用最高（5862.09 × 10

CNY/a），比经济性最好的系统B仅高约1.0%，但系统能效更高。这说明膜分离和海上风电应用于水合物开采平台，在能效和经济性方面都具有较大潜力。

Abstract

To improve the energy efficiency of a coupled natural gas hydrate exploitation and reforming hydrogen production system

process design and modeling were conducted

and models for energy efficiency assessment and economic analysis were established. Focusing on the selection between fuel heating or electric reforming in the reforming process

whether offshore wind power is integrated in electric reforming

and t

he selection between membrane separation or amine scrubbing in H

separation

the exergy efficiency ratio and annual total cost of different technical schemes were compared. The results show that System C

with electric reforming without offshore wind power integration and membrane separation

has the highest exergy efficiency ratio (2.25). System B

with fuel heating reforming and membrane separation

has the lowest annual total cost (5803.91 × 10

CNY/a). System F

which integrates offshore wind power and uses amine scrubbing for separation

has the highest annual total cost (5862.09 × 10

CNY/a)

only about 1.0% higher than the most economically efficient System B

but with higher energy efficiency. This indicates that the application of membrane separation and offshore wind power on hydrate exploitation platforms has significant potential in both energy efficiency and economy.

关键词

天然气水合物开采重整制氢工艺设计能效经济性

Keywords

natural gas hydrate exploitationreforming hydrogen productionprocess designenergy efficiencyeconomic evaluation

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