Energy, exergy, economic, and environmental analysis of natural gas sweetening process using lean vapor compression: a comparison study

IF 1 Q4 ENGINEERING, CHEMICAL

Chemical Product and Process Modeling Pub Date : 2023-11-23 DOI:10.1515/cppm-2023-0040

Xiujun Sun, Lizhi Yuan

{"title":"Energy, exergy, economic, and environmental analysis of natural gas sweetening process using lean vapor compression: a comparison study","authors":"Xiujun Sun, Lizhi Yuan","doi":"10.1515/cppm-2023-0040","DOIUrl":null,"url":null,"abstract":"Abstract Gas sweetening with an aqueous solution of diethanolamine is a crucial and common process in natural gas processing. However, the process, particularly in the solvent regeneration section, consumes a substantial amount of energy, significantly escalating the cost of gas. This paper presents a simulation and optimization of an existing natural gas refinery plant using a lean vapor compression method. The simulation results indicate that the current process requires 2.73 GJ/tacid gas for solvent regeneration, with exergy destruction of 14,120.59 kW in the solvent regeneration section. The total annualized cost for the current process is 11.68 M$. A modified scheme is proposed to address the issue of high energy consumption and the associated costs. The proposed scheme demonstrates significant improvements in the aforementioned parameters. Specifically, energy for solvent regeneration, exergy destruction in the solvent regeneration section, total annualized cost, and cost of gas are reduced by 16.12 %, 25.04 %, 20.97 %, and 20 % compared to the current process, respectively. These improvements enhance the thermoeconomic indexes, making the proposed scheme a viable and cost-effective alternative to the current process.","PeriodicalId":9935,"journal":{"name":"Chemical Product and Process Modeling","volume":"79 ","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Product and Process Modeling","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/cppm-2023-0040","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract Gas sweetening with an aqueous solution of diethanolamine is a crucial and common process in natural gas processing. However, the process, particularly in the solvent regeneration section, consumes a substantial amount of energy, significantly escalating the cost of gas. This paper presents a simulation and optimization of an existing natural gas refinery plant using a lean vapor compression method. The simulation results indicate that the current process requires 2.73 GJ/tacid gas for solvent regeneration, with exergy destruction of 14,120.59 kW in the solvent regeneration section. The total annualized cost for the current process is 11.68 M$. A modified scheme is proposed to address the issue of high energy consumption and the associated costs. The proposed scheme demonstrates significant improvements in the aforementioned parameters. Specifically, energy for solvent regeneration, exergy destruction in the solvent regeneration section, total annualized cost, and cost of gas are reduced by 16.12 %, 25.04 %, 20.97 %, and 20 % compared to the current process, respectively. These improvements enhance the thermoeconomic indexes, making the proposed scheme a viable and cost-effective alternative to the current process.

查看原文本刊更多论文

使用贫蒸汽压缩技术的天然气增甜工艺的能量、放能、经济和环境分析：对比研究

摘要使用二乙醇胺水溶液进行天然气增甜是天然气加工过程中的一项重要而常见的工艺。然而，该工艺，尤其是溶剂再生部分，需要消耗大量能源，从而大大增加了天然气的成本。本文介绍了使用贫蒸汽压缩法对现有天然气精炼厂进行模拟和优化的情况。模拟结果表明，当前工艺的溶剂再生需要 2.73 GJ/tacid（酸性气体），溶剂再生部分的放能损耗为 14120.59 kW。当前工艺的年化总成本为 1168 万美元。为解决高能耗和相关成本问题，提出了一个改进方案。拟议方案在上述参数方面有显著改善。具体而言，与当前工艺相比，溶剂再生的能耗、溶剂再生部分的放能破坏、年化总成本和气体成本分别降低了 16.12%、25.04%、20.97% 和 20%。这些改进提高了热经济指标，使拟议方案成为当前工艺的可行且具有成本效益的替代方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Chemical Product and Process Modeling ENGINEERING, CHEMICAL-

CiteScore

2.10

自引率

11.10%

发文量

期刊介绍： Chemical Product and Process Modeling (CPPM) is a quarterly journal that publishes theoretical and applied research on product and process design modeling, simulation and optimization. Thanks to its international editorial board, the journal assembles the best papers from around the world on to cover the gap between product and process. The journal brings together chemical and process engineering researchers, practitioners, and software developers in a new forum for the international modeling and simulation community. Topics: equation oriented and modular simulation optimization technology for process and materials design, new modeling techniques shortcut modeling and design approaches performance of commercial and in-house simulation and optimization tools challenges faced in industrial product and process simulation and optimization computational fluid dynamics environmental process, food and pharmaceutical modeling topics drawn from the substantial areas of overlap between modeling and mathematics applied to chemical products and processes.