闷烧热解及间接加热直立移动床生物质炭化设备设计研究

Design of Biomass Carbonization Equipment for Vertical Moving Bed

我国秸秆资源丰富,但是焚烧秸秆现象严重,不仅浪费资源,而且带来一系列的环境问题。为此,以粉碎的生物质颗粒料为炭化原料,创新采用分步加热炭化的工艺路线,设计了一种直立式移动床生物质炭化设备。该设备采用闷烧热解以及间接加热的方式为生物质炭化提供热量,并利用绞龙、旋转炉篦等结构实现了生物质的连续炭化。详细介绍了该设备从整体到局部的设计流程,并对其重要参数的选择做了详细分析,同时针对重要结构进行强度分析。在设备的加工制造及组装过程中,发现该试制设备设计良好、装配方便、运行平稳,模块化设计便于安装和后期维护。以谷壳为炭化原材料,进行了功能性试验,谷壳炭化效果良好,表明其工艺路线设计较为合理。该设备结构合理、操作方便、可实现连续化生产,具有一定的市场前景。

China is rich in straw resources,but the phenomenon of burning straw is very severe. It not only wastes resources,but also brings about a series of environmental problem. So this paper designed a kind of upright moving bed of biomass carbonization equipment taking crush biomass granules as material for biomass carbonization,by a innovative route with step-by-step heating and carbonization process. This equipment adopted smoldering and indirect heating method to provide heat for biomass carbonization,and used the screw conveyor,rotary grate and other structures to achieve the continuous carbonization of biomass. This paper introduced in detail the design process of the equipment from the whole to the part,and analyzed its important parameters. At the same time,the paper carried out strength analysis on important structures. In the process of manufacturing and assemblying the equipment,it was found that the trial equipment was designed well,easy to assemble,operate smoothly and the modular design part was easy to install and for later stage maintenance. The paper also conducted a functional test taking rice husk as carbonization raw material. The result showed the grain husk carbonization had good effect,indicating its process route had reasonable design. The equipment had reasonable structure, easy to operate, could sustain continuous production,and had certain market prospect.