Efficiency Increase of Biological Methanation based Power-to-Methane Technology Using Waste Heat Recovery with Organic Rankine Cycle

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-08-30 DOI:10.3311/ppch.20428

A. Groniewsky, Réka Kustán, A. Imre

引用次数: 0

Abstract

Due to the efforts of reducing greenhouse gas emissions, nearly two-thirds of the installed electric capacity worldwide will come from renewables in 2050 (EIA 2021), making frequency control without energy storage impossible. Power-to-Methane (PtM) technology allows electricity to be stored in the form of methane. The storage efficiency of PtM may be increased either by maximizing the recovery of the stored electricity, which is a common method, or by reducing the amount of electricity the PtM has to be charged with for a given amount of stored energy. In this paper, a case study is presented for the latter by directly integrating an Organic Rankine Cycle into the PtM technology by recycling the waste heat from water electrolysis and biological methanation back to electrolysis. With this method, total storage efficiency can be increased by approximately two percentage points.

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利用有机朗肯循环废热回收提高生物甲烷化发电制甲烷技术效率

由于减少温室气体排放的努力，到2050年，全球近三分之二的装机容量将来自可再生能源(EIA 2021)，这使得没有储能的频率控制成为不可能。电能转甲烷(PtM)技术允许电能以甲烷的形式储存。通过最大限度地回收存储的电能(这是一种常用的方法)，或者通过减少给定存储能量的PtM必须充电的电量，可以提高PtM的存储效率。本文介绍了将有机朗肯循环直接集成到PtM技术中的案例研究，将水电解和生物甲烷化产生的余热回收到电解中。通过这种方法，总存储效率可以提高大约两个百分点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.