熔盐环境下玉米芯的co2气化

IF 3.7 3区 工程技术 Q2 ENGINEERING, CHEMICAL
Zhiying Feng, Kaifeng Liu, Tao Zhu, Dongfang Li, Xing Zhu
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引用次数: 0

摘要

熔盐气化具有良好的传热性能和利用太阳能减少碳排放的优点,是一种很有前途的生物质转化技术。研究了熔融盐环境下玉米芯co2气化特性,提出了引入Fe2O3作为催化剂提高合成气产率的方法。结果表明,熔盐能显著促进玉米芯转化为气态产物,且焦油和炭产率极低。与O2和H2O气氛相比,使用CO2作为气化剂可提高玉米芯气化过程中气态产物的产率,尤其是CO和H2的产率。Fe2O3作为催化剂的引入进一步提高了气相产物的产率和冷气效率(CGE), 900℃时合成气的产率提高到2258.3 ml·g−1,CGE高达105.8%。研究结果表明,在熔融盐环境下,添加Fe2O3的CO2气化能促进焦油的裂解,显著提高合成气收率。并计算了气化过程所需驱动能量,总能耗为16.83 GJ·t−1。该研究为生物质气化开辟了一种新的解决方案,在分布式能源或化学系统中显示出巨大的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

CO2-gasification of corncob in a molten salt environment

CO2-gasification of corncob in a molten salt environment
Molten salt gasification is a promising technology for biomass conversion due to its advantages of superior heat transfer and the ability of utilizing solar energy to reduce carbon emission. In this study, the characteristics of corncob CO2-gasification in molten salt environments is thoroughly investigated, and the approach of introducing Fe2O3 as catalyst to enhance the syngas yield is proposed. The results showed that the molten salts significantly promoted the conversion of corncob into gaseous products with very low tar and char yield. Compared to O2 and H2O atmospheres, utilizing CO2 as gasifying agent enhanced the yield of gaseous products during the corncob gasification, especially the yields of CO and H2. The introduction of Fe2O3 as a catalyst could further increase the yield of gaseous products and the cold gas efficiency (CGE), and the yield of syngas was increased into 2258.3 ml·g−1 with a high CGE of 105.8% in 900 °C. The findings evidenced that CO2 gasification in the molten salt environment with Fe2O3 addition can promote the cracking of tar, increasing the syngas yield significantly. Moreover, the energy required to drive the gasification process was calculated, and the total energy consumption was calculated as 16.83 GJ·t−1. The study opened up a new solution for the biomass gasification, exhibiting a great potential in distributed energy or chemical systems.
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来源期刊
Chinese Journal of Chemical Engineering
Chinese Journal of Chemical Engineering 工程技术-工程:化工
CiteScore
6.60
自引率
5.30%
发文量
4309
审稿时长
31 days
期刊介绍: The Chinese Journal of Chemical Engineering (Monthly, started in 1982) is the official journal of the Chemical Industry and Engineering Society of China and published by the Chemical Industry Press Co. Ltd. The aim of the journal is to develop the international exchange of scientific and technical information in the field of chemical engineering. It publishes original research papers that cover the major advancements and achievements in chemical engineering in China as well as some articles from overseas contributors. The topics of journal include chemical engineering, chemical technology, biochemical engineering, energy and environmental engineering and other relevant fields. Papers are published on the basis of their relevance to theoretical research, practical application or potential uses in the industry as Research Papers, Communications, Reviews and Perspectives. Prominent domestic and overseas chemical experts and scholars have been invited to form an International Advisory Board and the Editorial Committee. It enjoys recognition among Chinese academia and industry as a reliable source of information of what is going on in chemical engineering research, both domestic and abroad.
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