Abstract This paper presents the kinetics and mechanisms of pyrolysis and gasification processes of sewage sludge and phytomass blends as well as their application in gas conversion. Sewage sludge is a type of combustible waste substance that constitutes a renewable energy source. Mixing sewage sludge with another type of waste biomass can have a beneficial effect on the quality of the fuel produced and may improve the conversion efficiency. Pyrolysis and gasification processes are considered sustainable methods for the production of combustible gas. The two-stage gasification process combining co-pyrolysis and the gasification of “hot” char were studied using a thermogravimetric analyser and a fixed-bed reactor coupled with gas chromatography. The pyrolysis of sewage sludge and Salix viminalis as well as their mixture was performed below the temperature of 900 °C at low heating rates under a nitrogen atmosphere and in non-isothermal conditions. The char gasification experiments were carried out at temperatures of 700, 800 and 900 °C in an atmosphere of air. The effect of the percentage share of Salix viminalis in the tested blends on the pyrolysis process and on the reactivity of “hot” char in the gasification process were investigated. For the tested blends, the kinetic parameters of co-pyrolysis and gasification were determined.

中文翻译：

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污水污泥与植物体共热解及其炭的气化：动力学和反应机理研究

摘要 本文介绍了污水污泥和植物物质混合物的热解和气化过程的动力学和机制，以及它们在气体转化中的应用。污水污泥是一种构成可再生能源的可燃废物。将污水污泥与另一种类型的废弃生物质混合可以对生产的燃料质量产生有益影响，并可以提高转化效率。热解和气化过程被认为是生产可燃气体的可持续方法。使用热重分析仪和固定床反应器结合气相色谱法研究了共热解和“热”炭气化相结合的两级气化过程。污水污泥和柳柳及其混合物的热解是在低于 900 °C 的温度下在氮气气氛和非等温条件下以低加热速率进行的。炭气化实验在 700、800 和 900 °C 的温度下在空气气氛中进行。研究了测试混合物中柳叶柳的百分比份额对热解过程和气化过程中“热”炭的反应性的影响。对于测试的混合物，确定了共热解和气化的动力学参数。研究了测试混合物中柳叶柳的百分比份额对热解过程和气化过程中“热”炭的反应性的影响。对于测试的混合物，确定了共热解和气化的动力学参数。研究了测试混合物中柳叶柳的百分比份额对热解过程和气化过程中“热”炭反应性的影响。对于测试的混合物，确定了共热解和气化的动力学参数。