有机废物厌氧消化热电联产系统性能评价

The performance evaluation on organic waste anaerobic digester for cogeneration systems

现有农村单体、常温发酵沼气池的产气率较低。环境温度越低,供暖量的需求越大,单体沼气池很难满足农牧地区供暖热负荷的需求。文章研究设计了一套适用于我国北方农牧地区的增强型甲烷供暖、氢气发电的热电联供系统。采用国际能源署颁布的发电成本计算法(LEC)和生命周期分析法(LCA)分别计算评价了有机废物厌氧消化热电联产技术方案和生物质直燃发电技术及生物质气化发电技术的经济和排放性能,并给出了该技术方案的投资回收周期。

The rate of production of biogas of existing rural anaerobic digester was low, which was hard to satisfy the demand of heating load of farming and stockbreeding areas. And the lower the ambient temperature was, the more the demands of heating were. So it is necessary to find a reasonable solution to solve problems of the energy supply of the distributive residents.A suitable enhanced methane heating system and hydrogen power generation system was designed for rural areas of northern China. The evaluation on the performance of organic waste anaerobic digester for cogeneration systems, direct combustion and gasification technology of biomass through LCA algorithms and LEC power generation cost calculation method promulgated by the lEA （International Energy Agency）,was attained, and the payback period of the proposed program was also calculated.