The Characterization of Coal Liquefaction Products Obtained under Inert Atmosphere and Catalytic Conditions. Part I: Insoluble Products (Chars)

H. Karaca
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引用次数: 5

Abstract

In this study, two types of Turkish lignite were liquefied under inert atmosphere and catalytic conditions. Catalyst was added to the reaction medium by physically mixing or impregnation. The products obtained at coal liquefaction were separated into two groups as soluble products with THF extraction and insoluble products (chars). The effects of various process parameters on the properties of chars were examined. The ash contents of chars were decreased significantly by increasing solvent to coal ratio and reaction temperature, and changed partially by pressure, catalyst type and concentration. Carbon, hydrogen and nitrogen contents of the chars decreases, but the sulphur and oxygen contents increase with increasing solvent to coal ratio, pressure, catalyst concentration, reaction time and reaction temperature. The fuel quality of chars obtained by catalyst impregnation method was determined to be much higher with respect to the catalyst physically mixing method.
惰性气氛和催化条件下煤液化产物的表征。第一部分:不溶性产物(炭)
在本研究中,两种类型的土耳其褐煤在惰性气氛和催化条件下液化。催化剂通过物理混合或浸渍的方式加入到反应介质中。将煤液化所得的产物分为两组:THF萃取的可溶性产物和不溶性产物(焦炭)。考察了各种工艺参数对炭性能的影响。提高溶剂煤比和反应温度能显著降低焦炭的灰分含量,压力、催化剂类型和浓度对焦炭灰分含量有一定影响。随着溶剂煤比、压力、催化剂浓度、反应时间和反应温度的增加,焦炭的碳、氢、氮含量降低,硫、氧含量增加。采用催化剂浸渍法制备的焦炭的燃料质量要比物理混合法制备的高得多。
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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