An innovative coupled process between methane dry reforming and carbon dioxide methanation by both mass and energy integration

IF 3.9 3区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Research & Design Pub Date : 2025-08-22 DOI:10.1016/j.cherd.2025.08.028

Xiaohui Li , Wei Xia , Liang Ding , Juanjuan Yin

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Abstract

Carbon dioxide (CO₂) conversion technology has been estimated as a potentially practical solution for global warming, although there are still some challenging issues such as high cost and big energy consumption. Methane dry reforming (MDR) and carbon dioxide methanation (CDM) are regarded as the two interesting and attractive processes among these technologies. In this study, a novel coupled process by combining MDR with CDM was firstly proposed and investigated in detail, in order to overcome the existing drawbacks of each single process. Not only can the coupled process save natural gas and hydrogen use by mass integration, but it also can economize on energy consumption by energy integration. The simulation results indicate that hydrogen and natural gas consumption can be reduced to varying degrees according to different requirements. Moreover, in this innovative-coupled MDR-CDM process, the exothermic CDM section can provide heat input to the endothermic MDR section, thus lowering energy consumption. Under a temperature combination of 500 ℃ (MDR)-600 ℃ (CDM), the energy consumption of this coupled process can be decreased by 39.0 % and 36.5 %, respectively, compared with the conventional independent MDR process at 900 ℃ and CDM process at 300 ℃, correspondingly.

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基于质量和能量集成的甲烷干重整与二氧化碳甲烷化耦合创新工艺

二氧化碳（CO2）转化技术被认为是解决全球变暖的一种潜在的实用方法，但仍存在成本高、能耗大等问题。在这些技术中，甲烷干重整（MDR）和二氧化碳甲烷化（CDM）被认为是最具吸引力的两种技术。本文首次提出了一种将MDR与CDM相结合的新型耦合工艺，并对其进行了详细的研究，以克服各单一工艺存在的缺点。耦合过程不仅可以通过大规模集成节省天然气和氢气的使用，还可以通过能量集成节约能源消耗。仿真结果表明，根据不同的要求，可以不同程度地减少氢气和天然气的消耗。此外，在这种创新的MDR-CDM耦合过程中，放热的CDM部分可以为吸热的MDR部分提供热量输入，从而降低了能耗。在500 ℃(MDR)-600 ℃（CDM）的温度组合下，与传统的独立MDR工艺（900 ℃）和CDM工艺（300 ℃）相比，该耦合工艺的能耗分别降低了39.0 %和36.5 %。

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

Chemical Engineering Research & Design 工程技术-工程：化工

CiteScore

6.10

自引率

7.70%

发文量

623

审稿时长

42 days

期刊介绍： ChERD aims to be the principal international journal for publication of high quality, original papers in chemical engineering. Papers showing how research results can be used in chemical engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in plant or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of traditional chemical engineering.