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垃圾焚烧炉掺烧陈腐垃圾及其配风优化的数值模拟

李德波,  陈兆立,  陈智豪,  冯永新,  黄梓淦,  韦琛,  马晓茜

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文章导航 > 环境工程  > 2022 >  40(11): 113-119
李德波, 陈兆立, 陈智豪, 冯永新, 黄梓淦, 韦琛, 马晓茜. 垃圾焚烧炉掺烧陈腐垃圾及其配风优化的数值模拟[J]. 环境工程, 2022, 40(11): 113-119. doi: 10.13205/j.hjgc.202211016
引用本文: 李德波, 陈兆立, 陈智豪, 冯永新, 黄梓淦, 韦琛, 马晓茜. 垃圾焚烧炉掺烧陈腐垃圾及其配风优化的数值模拟[J]. 环境工程, 2022, 40(11): 113-119. doi: 10.13205/j.hjgc.202211016
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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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垃圾焚烧炉掺烧陈腐垃圾及其配风优化的数值模拟

doi: 10.13205/j.hjgc.202211016

  • 1. 南方电网电力科技股份有限公司, 广州 510080;

  • 2. 华南理工大学 电力学院, 广州 510640

基金项目: 

国家自然科学基金重点项目（51376161）；中国南方电网公司重点项目（NYJS2020KJ005）

详细信息
    作者简介:

    李德波(1983-),男,工学博士,主要研究方向为煤粉燃烧理论、数值和现场试验研究,超超临界锅炉调试、试验和技术监督,煤粉燃烧高级数值模拟,大规模并行计算方法和程序开发等。ldbyx@126.com

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

  • 1. China Southern Grid Power Technology Co., Ltd, Guangzhou 510080, China;

  • 2. School of Electric Power, South China University of Technology, Guangzhou 510640, China

    摘要
  • 摘要: 以某350 t/d的垃圾焚烧炉为研究对象，采用CFD模拟方法研究了城市生活垃圾掺烧填埋场陈腐垃圾及不同配风方案对燃烧过程、流场分布及NOx排放规律等影响。结果表明：掺烧陈腐垃圾延后了床层焦炭燃烧过程，有利于挥发分析出，从而使燃烧区及烟道气相燃烧更剧烈，提高了炉膛整体温度，但也加剧了局部超温，同时一烟道出口NOx浓度从247.85 mg/Nm3降低到198.75 mg/Nm3。工况4增大了上下层二次风，使燃烧区流体充分混燃，且烟道流体湍动度增大，使炉膛内温度更加均匀，有利于缓解一烟道高温腐蚀现象。合适的配风比可极大降低一烟道出口NOx浓度，使之从198.75 mg/Nm3降至89.80 mg/Nm3，同时也延长了炉膛烟气的停留时间。该研究结果可为垃圾焚烧炉改进陈腐垃圾掺烧比和配风比提供参考。
    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 NOx 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 NOx 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 NOx 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.
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出版历程
  • 收稿日期:  2021-12-20
  • 网络出版日期:  2023-03-24

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