Influencing of kitchen waste removal ratio on NOx emission of domestic waste incineration plant in the era of waste classification [垃圾分类背景下厨余垃圾剔除比例对生活垃圾焚烧厂NOx排放的影响]

作者：Shen H.; Cheng J.; Xie Y.; Lu J.; Hai J.

来源：Chinese Journal of Environmental Engineering, 2021, 15(12): 3957-3966.

DOI：10.12030/j.cjee.202012099

• Fuel-N conversion
• Kitchen waste
• Source control
• Waste classification
• Waste incineration

To analyze the factors in different process of fuel-N conversion, fuel-N emission data and corresponding operating conditions and fuel characteristics data of the waste incineration plant were collected when SNCR is closed. The results showed that no significant correlation between the fuel-N conversion efficiency and furnace temperature and moisture content in industrial production. The fuel-N conversion efficiency decreased with the nitrogen content and fixed carbon content, yet increased with the excess air ratio, H/N and O/N weight ratio. The fuel-N conversion pathway under the conditions of industrial production was proposed. The fuel characteristics played a crucial role in the fuel-N conversion efficiency and NOx production. The relationship between the fuel-N conversion and H/N weight ratio and char content was further quantified. Separating kitchen waste from municipal solid waste (MSW) was proposed as an effective method to reduce NOx emission, and the evolving trends of fuel-N conversion efficiency and NOx emission were estimated under the different scenarios of kitchen waste separation rates in the representative cities in China. The estimation indicated that the cost of denitration and the risk of ammonia escape in waste incineration plants could be reduced by separating kitchen waste from MSW.

• 单位
  华南理工大学