生物质与烟煤共热解特性。
Co-pyrolysis characteristic of biomass and bituminous coal.
机构信息
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China.
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China.
出版信息
Bioresour Technol. 2015 Mar;179:414-420. doi: 10.1016/j.biortech.2014.12.025. Epub 2014 Dec 16.
Co-pyrolysis characteristics of biomass and bituminous coal have been studied in this work. The temperature was up to 900°C with the heating rates of 10, 15, 20, 25 and 30°C/min. Rice straw, saw dust, microcrystalline cellulose, lignin and Shenfu bituminous coal were chosen as samples. Six different biomass ratios were used. The individual thermal behavior of each sample was obtained. The experimental weight fractions of the blended samples and the calculated values were compared. The results show that the weight fractions of the blended samples behave differently with calculated ones during the co-pyrolysis process. With the increasing biomass ratio, relative deviations between experimental weight fractions and calculated ones are larger. H/C molar ratio, heat transfer properties of biomass would affect to the interaction between biomass and coal. The maximum degradation rates are slower than the calculated ones. The activation energy distributions also changed by adding some biomass into coal.
本工作研究了生物质和烟煤的共热解特性。加热速率为 10、15、20、25 和 30°C/min，温度高达 900°C。选用稻秸、锯末、微晶纤维素、木质素和神府烟煤作为样品。使用了六种不同的生物质比例。得到了每个样品的单独热行为。比较了共热解过程中混合样品的实验重量分数和计算值。结果表明，混合样品的重量分数在共热解过程中与计算值的表现不同。随着生物质比例的增加，实验重量分数与计算值之间的相对偏差增大。H/C 摩尔比、生物质的传热性能会影响生物质与煤之间的相互作用。最大降解速率比计算值慢。添加一些生物质也会改变煤的活化能分布。
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