NUMERICAL SIMULATION OF MIXED FIRING OF AGED REFUSE AND AIR DISTRIBUTION OPTIMIZATION IN A MSW INCINERATION FURNACE

LI Debo; CHEN Zhaoli; CHEN Zhihao; FENG Yongxin; HUANG Zigan; WEI Chen; MA Xiaoqian

doi:10.13205/j.hjgc.202211016

Volume 40 Issue 11

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(11): 113-119

LI Debo, CHEN Zhaoli, CHEN Zhihao, FENG Yongxin, HUANG Zigan, WEI Chen, MA Xiaoqian. NUMERICAL SIMULATION OF MIXED FIRING OF AGED REFUSE AND AIR DISTRIBUTION OPTIMIZATION IN A MSW INCINERATION FURNACE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 113-119. doi: 10.13205/j.hjgc.202211016

Citation:

LI Debo, CHEN Zhaoli, CHEN Zhihao, FENG Yongxin, HUANG Zigan, WEI Chen, MA Xiaoqian. NUMERICAL SIMULATION OF MIXED FIRING OF AGED REFUSE AND AIR DISTRIBUTION OPTIMIZATION IN A MSW INCINERATION FURNACE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 113-119. doi: 10.13205/j.hjgc.202211016

Citation:

LI Debo, CHEN Zhaoli, CHEN Zhihao, FENG Yongxin, HUANG Zigan, WEI Chen, MA Xiaoqian. NUMERICAL SIMULATION OF MIXED FIRING OF AGED REFUSE AND AIR DISTRIBUTION OPTIMIZATION IN A MSW INCINERATION FURNACE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 113-119. doi: 10.13205/j.hjgc.202211016

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NUMERICAL SIMULATION OF MIXED FIRING OF AGED REFUSE AND AIR DISTRIBUTION OPTIMIZATION IN A MSW INCINERATION FURNACE

doi: 10.13205/j.hjgc.202211016

1. China Southern Grid Power Technology Co., Ltd, Guangzhou 510080, China;
2. School of Electric Power, South China University of Technology, Guangzhou 510640, China

Received Date: 2021-12-20
Available Online: 2023-03-24

Abstract

Abstract

The effects of mixed combustion of municipal solid waste (MSW) with aged refuse in landfills and different air distribution schemes on combustion process flow field distribution and NO_x emission in a 350 t/d furnace were studied by CFD simulation. The results showed that adding aged refuse delayed the combustion process of char on the bed, which was conducive to the release of volatiles, so that the gas phase combustion in the combustion zone and flue became more intense. And the overall temperature of the furnace was increased, which also caused local overtemperature. At the same time, the NO_x concentration at the first flue outlet decreased from 247.85 mg/Nm³ to 198.75 mg/Nm³. In working condition 4, the upper and lower secondary air was increased, so that the fluid in the combustion zone was fully mixed and burned. And the increased degree of fluid turbulence in the flue made the temperature in the furnace more uniform, which was beneficial to relieve the phenomenon of high-temperature corrosion in the first flue. An appropriate air distribution ratio could greatly reduce the NO_x concentration at the flue outlet from 198.75 mg/Nm³ to 89.80 mg/Nm³, and also prolonged the residence time of flue gas in the furnace. The results could provide a reference for improving the mixing ratio of aged refuse and air distribution ratio of the refuse incinerator.
- aged refuse,
- waste incinerator,
- NO_x,
- air distribution optimization,
- numerical simulation

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References(26)

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