生活垃圾焚烧烟气再循环技术分析与试验探讨

Analysis and Experimental Discussion on Flue Gas Recirculation Technology of MSW Incineration

生活垃圾焚烧发电行业面临国补退坡,烟气排放标准日益提高的难题。烟气再循环技术作为一种低投入、低运行成本的燃中控制技术,可降低烟气中的NOx的生成。通过分析对比不同的技术路线的优缺点,选择余热锅炉出口烟道抽取烟气,经原二次风系统进入炉内,部分替代二次风的技术路线,并在东北某500t/d垃圾焚烧炉排炉进行实验,验证技术的经济性。

The domestic waste incineration power generation industry is faced with the problem that the national compensation is declining,but the flue gas emission standard is increasing day by day.As a low input and low operation cost combustion control technology,flue gas recirculation technology can reduce the generation of NOx in flue gas.By analyzing and comparing the advantages and disadvantages of different technical routes,the technical route of extracting flue gas from the outlet flue of waste heat boiler,entering the furnace through the original secondary air system,and partially replacing the secondary air was selected,and an experiment was carried out in a 500t/d waste incinerator grate in northeast China to verify the economic efficiency of the technology.