农林废弃物、生活垃圾和污泥是农村和小城镇地区主要的含能固体废弃物资源，为了将这些废弃物高效就地处理，结合分布式能源系统优势和流化床具有原料适应性强的优点，提出了一种基于双联循环流化床生物质、垃圾、污泥共气化协同冷热电三联产方法。基于热化学平衡的原理，建立了系统模型，对系统的性能和关键参数开展了分析。研究发现：系统发电效率随双联流化床反应器压比的增加先增加后降低，并且在气化过程中的蒸汽/燃料的比值为1.0时各效率达到最大；气化温度对供冷和供暖效率的影响与发电效率不同，随着气化温度升高，发电效率逐渐降低，但是供暖和供冷的总能量利用效率逐渐升高。本文提出的基于双联循环流化床生物质、垃圾、污泥共气化协同冷热电三联产系统，可为小城镇和周边农村生物质、垃圾和污泥等固体废弃物处理提供一种可行的思路。

Agricultural and forestry waste, domestic waste and sludge are the main energy-containing solid waste resources in rural areas and small towns. In order to use these wastes efficiently, this paper proposes a method based on the co-gasification of biomass, garbage, and sludge in a dual circulating fluidized bed with a combined cooling, heating and power generation method. Based on the principle of thermochemical equilibrium, a system model was established to analyze the performance and the effects of key parameters. It can be found that the power generation efficiency of the system first increased and then decreased with the rise of the pressure ratio of the dual fluidized bed reactor, and the efficiency could reach the maximum value when the steam/fuel ratio in the gasification process was 1.0. The effect of gasification temperature on cooling and heating efficiency is different from that of power generation. As the gasification temperature increases, the power generation efficiency gradually decreases, but the total efficiency of heating and cooling gradually increases. The research in this paper provides a feasible pathway for the treatment of solid wastes such as biomass, garbage and sludge in small towns and nearby rural areas.