高浓度的CO和CO2抑制了褐煤在超临界水中的气化

IF 3.4 3区工程技术 Q2 CHEMISTRY, PHYSICAL

Journal of Supercritical Fluids Pub Date : 2024-11-30 DOI:10.1016/j.supflu.2024.106486

Rui Zhang, Shuaiqi Zhao, Han Huang, Kunpeng Zhao, Bofeng Bai

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引用次数: 0

摘要

超临界水气化（SCWG）技术能够有效利用褐煤生产H2、CO和CO2。不同气氛下煤的气化程度不同，H2促进碳结构的热解。虽然观察到H2、CO和CO2同时增加，但它们对煤的SCWG的综合影响尚不清楚。利用甲酸（FA）在超临界水中生成H2、CO和CO2，实验研究了高浓度（>30 wt%） FA分解生成的气态产物对褐煤SCWG的影响。与纯超临界水中的褐煤气化相比，30 wt% FA溶液中褐煤气化的碳效率降低了7.66 %，褐煤的质量转化率降低了4.0% %。CO和CO2浓度越高，对褐煤SCWG的抑制作用越强。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

High concentrations of CO and CO2 inhibit lignite gasification in supercritical water

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High concentrations of CO and CO2 inhibit lignite gasification in supercritical water

Supercritical water gasification (SCWG) technology enables the efficient utilisation of lignite to produce H₂, CO, and CO₂. Coal gasification differs under different atmospheres and H₂ promotes the pyrolysis of carbon structures. While simultaneous increases in H₂, CO, and CO₂ are observed, their combined effect on the SCWG of coal remains unknown. Formic acid (FA) was used to produce H₂, CO, and CO₂ in the supercritical water, and the impact of the gaseous product generated from high-concentration (>30 wt%) FA decomposition on the SCWG of lignite was experimentally investigated. In comparison to lignite gasification in pure supercritical water, the carbon efficiency of lignite gasification in 30 wt% FA solution decreased by 7.66 %, and the mass conversion of lignite decreased by 4.0 %. Higher concentrations of CO and CO₂ yielded stronger inhibition of lignite SCWG.

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来源期刊

Journal of Supercritical Fluids 工程技术-工程：化工

CiteScore

7.60

自引率

10.30%

发文量

236

审稿时长

56 days

期刊介绍： The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics. Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.