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基于生物质部分氧化气化动力学参数难于采用热重分析仪进行研究,本文设计了一个移动床实验方案,样品槽携带生物质样品进入具有线性温度分布的炉膛中加热,并配合一定流量的空气与逐步升温的生物质反应,以达到连续稳定的部分氧化气化。求解动力学参数,需要为生物质提供稳定的升温速率,因此,本文着重研究生物质样品在线性温度分布的炉膛中的升温特性,研究了样品厚度、样品槽运动速度对样品升温特性的影响。在生物质进样速率一定的情况下,改变样品槽运动速度,得到生物质有稳定的升温特性,并且升温速率可控,能达到生物质部分氧化气化动力学实验研究的要求。
Based on the kinetic parameters of biomass partial oxidation and gasification, it is difficult to study with thermogravimetric analyzer. In this paper, a moving bed experiment scheme is designed. The sample tank carries biomass sample into a furnace with linear temperature distribution and heats it with a certain flow of air With the gradual warming of the biomass reaction, in order to achieve continuous and stable partial oxidation gasification. In order to solve the kinetic parameters, it is necessary to provide a steady heating rate for the biomass. Therefore, this paper focuses on the temperature rising characteristics of biomass samples in a linear temperature distribution furnace and studies the influence of sample thickness and sample cell velocity on the temperature rising characteristics of samples. In the case of a certain biomass feed rate, the velocity of the sample tank can be changed to obtain a stable temperature rising property of the biomass, and the heating rate can be controlled to meet the requirements of the experimental study of partial oxidation and gasification of biomass.