旋流式烟气再循环对生活垃圾焚烧炉温控制和NO<sub><i>x</i></sub>排放的影响研究

龙吉生

doi:10.13205/j.hjgc.202407020

旋流式烟气再循环对生活垃圾焚烧炉温控制和NO_x排放的影响研究

doi: 10.13205/j.hjgc.202407020

龙吉生

上海康恒环境股份有限公司, 上海 201703

基金项目:

国家重点研发计划资助(2022YFE0117300)

详细信息

作者简介:
龙吉生(1966-),男,博士,现任上海康恒环境股份有限公司董事长兼首席科学家,主要从事固废处理和垃圾焚烧工作。long@shsus.com.cn

计量
- 文章访问数: 26
- HTML全文浏览量: 1
- PDF下载量: 2
- 被引次数: 0
出版历程
- 收稿日期: 2023-11-01
- 网络出版日期: 2024-12-02

RESEARCH ON INFLUENCE OF SWIRLING EXHAUST GAS RECIRCULATION ON FURNACE TEMPERATURE CONTROL AND NO_x EMISSION IN A WASTE INCINERATION PLANT

LONG Jisheng

Shanghai SUS Environment Co., Ltd., Shanghai 201703, China

摘要

摘要: 工业有机固废协同处置和日益严格的NO_x排放要求给生活垃圾焚烧项目的清洁稳定运行带来了双重挑战,传统烟气再循环技术的运用效果受到影响,难以满足新形势的需求,因此亟需研发更高效的旋流式烟气再循环技术。通过数值模拟和工程试验的方法,分析了旋流式烟气再循环技术对垃圾焚烧炉温控制和NO_x排放的影响。结果表明:采用10%的烟气再循环比例,可降低炉膛平均温度约20 ℃,降低了结焦风险;旋流式烟气再循环耦合SNCR技术可有效将锅炉出口NO_x排放稳定控制在80 mg/Nm³以下,同时氨水单耗(单位质量垃圾处理消耗的新鲜氨水质量)下降35%,吨垃圾脱硝成本下降40.43%,实现清洁稳定焚烧,经济效益显著。
- 旋流式烟气再循环 /
- 垃圾焚烧 /
- 炉膛温度 /
- 氮氧化物
Abstract: The collaborative disposal of industrial organic solid waste and increasingly strict NO_x emission requirements have brought double challenges to the clean and stable operation of municipal waste incineration projects. The application effect of traditional exhaust gas recirculation technology has been affected, and it is difficult to meet the needs of the new situation, so it is urgent to develop more efficient swirling exhaust gas recirculation technology. This study analyzed the influence of applying swirling exhaust gas recirculation technology on furnace temperature control and NO_x emissions of waste incinerators through numerical simulation and engineering experiments. The results showed that at under the exhaust gas recirculation ratio of 10%, the average temperature of the furnace decreased by about 20 ℃, reducing the risk of coking; swirling exhaust gas recirculation combined with SNCR technology can effectively control the NO_x emission concentration below 80 mg/Nm³, reduce ammonia consumption by 35%, and reduce denitrification costs per ton of waste by 40.43%, achieving clean and stable incineration with significant economic benefits.
- swirling exhaust gas recirculation /
- waste incineration /
- furnace temperature /
- NO_x

HTML全文

参考文献(11)

[1]	王泉灵.垃圾焚烧电厂烟气处理技术路线研究[J].电站系统工程, 2023, 39(2):82-84.
[2]	龙吉生, 刘露, 袁旗斌等.垃圾焚烧烟气再循环技术的应用研究:以某垃圾焚烧厂为例[J].四川环境, 2022, 41(5):63-70.
[3]	沈宏伟, 胡利华, 郭无双, 等.生活垃圾焚烧常见烟气脱硝工艺的技术经济分析[J].环境卫生工程, 2022, 30(6):34-39.
[4]	刘露, 孙中涛. 烟气再循环脱硝技术在生活垃圾焚烧发电厂的应用[J].环境卫生工程, 2018, 26(6):83-86.
[5]	YAMASAKI H, ITO M. Low NO_x combustion by EGR and SNCR in MSW incineration plant[C]//The 9th International Conference on Combustion, Incineration/pyrolysis, Emission and Climate Change(i-CIPEC). Kyoto, 2016.
[6]	DU H L, BAI L, HUANG J, et al. The study of exhaust gas recirculation on NO_x reduction in municipal solid waste incineration[C]//The 4th Symposium of International Waste Working Group Asian Regional Branch(IWWG-ARB), Bangkok, Thailand, 2019.
[7]	重政祥子, 草野康弘, 基吉夫, 等. ストーカ炉における低 NO_x 燃焼運転の事例紹介[C]//一般社団法人廃棄物資源循環学会廃棄物資源循環学会研究発表会講演集第 31 回廃棄物資源循環学会研究発表会. 2020: 257.
[8]	WHITE M, GOFF S, DEDUCK S, et al. New process for achieving very low NO_x[C]//North American Waste-to-Energy Conference, 2009, 48807: 83-87.
[9]	姬海民, 胡介旭, 韩会亮, 等.四角切圆燃气锅炉NO_x减排放技术研究[J].热力发电, 2021, 50(7):156-161.
[10]	王沛丽, 王进, 许岩韦.垃圾焚烧炉烟气再循环率分析[J].四川环境, 2022, 41(5):112-117.
[11]	龙吉生, 袁旗斌, 杜海亮.垃圾热值对焚烧炉烟气再循环运用的影响研究[J].环境卫生工程, 2023, 31(2):77-81 , 87.