农业和农工业部门残余生物质的水热碳化技术

IF 2.8 4区 工程技术 Q2 ENGINEERING, CHEMICAL Processes Pub Date : 2024-08-09 DOI:10.3390/pr12081673
Carmine De Francesco, Thomas Gasperini, Daniele Duca, Giuseppe Toscano, Alessio Ilari
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引用次数: 0

摘要

水热碳化(HTC)是将农业和农用工业残留物转化为有价值产品的一种很有前途的方法。HTC 通过化学反应处理生物质,产生类似于褐煤的富碳固体--水碳。与其他热化学工艺不同,氢化炭处理高水分生物质无需预干燥。本文评估了氢化炭处理木屑、小麦秸秆和葡萄渣的效率,研究了它们的化学和结构特征以及关键的操作参数,如温度、压力、生物质/水比率和反应时间。研究结果表明,两个关键的工艺参数是温度和固态生物质与液相之间的比例。增加第一个参数可使能量含量增加 20%,碳浓度增加 50%,同时使水碳中的氧含量减少 30%。改变第二个参数可交替降低灰分含量,但同时降低能量含量。反应时间似乎对所生产生物炭的质量参数影响有限。最后,氢化炭似乎成功地提高了葡萄渣等广泛存在的农业废弃物的整体质量。
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Hydrothermal Carbonization of Residual Biomass from Agricultural and Agro-Industrial Sector
Hydrothermal carbonization (HTC) is a promising method for the conversion of agricultural and agro-industrial residues into valuable products. HTC processes biomass through chemical reactions that produce hydrochar, a carbon-rich solid similar to lignite. Unlike other thermochemical processes, HTC can handle high-moisture biomass without pre-drying. This article evaluates the efficiency of HTC on wood chips, wheat straw, and grape pomace, examining their chemical and structural characteristics and critical operational parameters such as the temperature, pressure, biomass/water ratio, and reaction time. The obtained results highlight that the two key process parameters are the temperature and the ratio between the solid biomass and liquid phase. Increasing the first parameter increases the energy content by 20% and increases the carbon concentration by up to 50%, while reducing the oxygen content by 30% in the hydrochar. Varying the second parameter leads to the alternating reduction of the ash content but simultaneously reduces the energy content. The reaction time seems to have a limited influence on the quality parameters of the biochar produced. Lastly, HTC appears to successfully enhance the overall quality of widely available agricultural wastes, such as grape pomace.
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来源期刊
Processes
Processes Chemical Engineering-Bioengineering
CiteScore
5.10
自引率
11.40%
发文量
2239
审稿时长
14.11 days
期刊介绍: Processes (ISSN 2227-9717) provides an advanced forum for process related research in chemistry, biology and allied engineering fields. The journal publishes regular research papers, communications, letters, short notes and reviews. Our aim is to encourage researchers to publish their experimental, theoretical and computational results in as much detail as necessary. There is no restriction on paper length or number of figures and tables.
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