生物质气机组排气余热发电的工程应用

邵剑波

胜利油田胜利动力机械集团有限公司，山东 东营   257092

摘要：为高效回收生物质气机组高温排气余热并用于发电，设计每台机组配置一个锅炉、多台机组配置一个锅炉（排气先汇总再进锅炉）、多台机组配置一个锅炉（排气先进锅炉再汇总）3种排气余热回收利用方案，通过对排气回收方式、锅炉结构、经济效益的综合分析与评价，确定主要系统的参数和关键设备选型，筛选出最优方案。结果表明：多台机组配置一个锅炉（排气先进锅炉再汇总）的方案总体造价较低，排气排放互不干扰，且年利润较高，是最优方案。该方案有效提高生物质气电站的发电效率，降低了能耗。

关键词：电力工程；排气输送；余热转化；余热发电

Engineering application of waste heat power generation from exhaust of biomass gas generator sets

SHAO Jianbo

Shengli Oilfield Shengli Power Machinery Group Co., Ltd., Dongying 257092, China

Abstract: In order to efficiently recover high-temperature exhaust heat from biomass gas generator sets and use it for power generation, three exhaust heat recovery and utilization schemes are designed: one boiler for each unit, solo boiler for multiple units (exhaust is firstly mixed before entering the boiler), and solo boiler for multiple units (exhaust enters the boiler before being mixed). Through comprehensive analysis and evaluation of exhaust recovery methods, boiler structures, and economic benefits, the parameters of the main system and key equipment selection are determined, and the optimal scheme is selected. The results show that the overall cost of “solo boiler for multiple units (exhaust enters the boiler before being mixed)” is relatively low, the exhaust do not interfere with each other, and the annual profit is high, which effectively improves the power generation efficiency of biomass gas power plants and reduces the energy consumption of enterprises.

Keywords: power engineering; exhaust flow; waste heat conversion; waste heat power generation