水热碳化工艺参数对玉米秸秆水合赭石理化性质和燃烧行为的影响

IF 2.9 4区 工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY
Zhenghao Zhang, Xin Shen, Yingyi Zhang, Zhichen Han, Chunyin Zhang
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引用次数: 0

摘要

水热碳化(HTC)是一种改善生物质燃料性能的有效方法。本研究在不同碳化条件下制备了可重复使用的玉米秸秆(MS)水炭,考察了碳化参数对MS水炭理化性质、回收率、煤化机理和燃烧行为的影响。结果表明,随着温度和时间的升高,MS 水合物的粒度、O/C 比、H/C 比、可燃性指数和综合燃烧特性指数逐渐降低,而热值、着火温度(Ti)和燃尽温度(Tf)逐渐升高。MS 碳氢化合物的可燃性和燃烧反应性明显优于无烟煤。在最佳炭化条件下(260 ºC、40 分钟、固液比 2%),MS 水炭具有较高的含碳量和热值,MS 的含碳量和热值分别为 66.85 和 22.36 MJ-kg-1。HTC 技术能有效地将 MS 生物质转化为高能量密度的固体燃料,为拓展水煤浆的应用领域提供了理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effects of Hydrothermal Carbonization Process Parameters on Physicochemical Properties and Combustion Behavior of Maize Stalk Hydrochars

Effects of Hydrothermal Carbonization Process Parameters on Physicochemical Properties and Combustion Behavior of Maize Stalk Hydrochars

Hydrothermal carbonization (HTC) is an effective method to improve the performance of biomass fuels. In this work, the reusable maize stalk (MS) hydrochars were prepared at different carbonization conditions, and the effects of carbonization parameters on physicochemical properties, recovery rate, coalification mechanism and combustion behavior of MS hydrochars were investigated. The results show that with the increase of temperature and time, the particle size, O/C and H/C ratios, flammability index and comprehensive combustion characteristic index of MS hydrochars decrease gradually, while the calorific value, ignition temperature (Ti), and burnout temperature (Tf) increase gradually. The combustibility and combustion reactivity of MS hydrochars are significantly better than anthracite. Under the optimal carbonization conditions (260 ºC, 40 min, solid–liquid ratio of 2%), MS hydrochar has a high carbon content and calorific value, and the carbon content and calorific value of MS are 66.85 and 22.36 MJ·kg−1, respectively. HTC technology can effectively transform MS biomass into high energy density solid fuel, which provides a theoretical basis for expanding the application field of hydrochars.

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来源期刊
Korean Journal of Chemical Engineering
Korean Journal of Chemical Engineering 工程技术-工程:化工
CiteScore
4.60
自引率
11.10%
发文量
310
审稿时长
4.7 months
期刊介绍: The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.
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