30 t/d新型村镇垃圾热解气化炉二噁英排放特性

马家瑜; 金余其; 薛冬; 唐烽; 朱中旭; 李民杰; 陈思雨

doi:10.13205/j.hjgc.202210022

30 t/d新型村镇垃圾热解气化炉二噁英排放特性

doi: 10.13205/j.hjgc.202210022

1. 浙江大学能源清洁利用国家重点实验室, 杭州 310027;
2. 无锡高尔环保科技有限公司, 江苏无锡 214174

基金项目:

国家重点研发计划项目(2018YFD1100602)

详细信息

作者简介:
马家瑜(1997-),女,硕士。mjy107991@163.com

通讯作者:
金余其。jinyuqi@zju.edu.cn

计量
- 文章访问数: 95
- HTML全文浏览量: 12
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2022-02-16

DIOXIN EMISSION CHARACTERISTICS OF A NOVEL 30 t/d VILLAGE AND TOWN-SCALE SOLID WASTES GASIFICATION SYSTEM

1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China;
2. Wuxi Gaoer Environmental Protection Technology Co., Ltd, Wuxi 214174, China

摘要

摘要: 针对目前处置村镇垃圾的小型热处理炉运行不稳定、排放难以达标等问题,介绍了一种新型村镇垃圾热解气化炉(30 t/d),并对其系统烟气及炉渣的二噁英生成排放特性进行研究。结果表明:炉渣中的二噁英浓度为0.723 μg I-TEQ/kg,可满足GB 16889-2008《生活垃圾填埋场污染控制标准》中二噁英排放的要求;在正常喷射活性炭时尾部烟气二噁英浓度为0.029 ng I-TEQ/Nm³,低于GB 18485-2014《生活垃圾焚烧污染控制标准》中二噁英排放限值;气化燃烧过程的烟气二噁英原始排放浓度较低,低温异相合成反应是该垃圾炉烟气二噁英的主要来源;在质量浓度分布上占优势的为高氯代PCDD/Fs,对总毒性当量起主导作用的为2,3,4,7,8-PeCDF,喷射活性炭对二噁英具有良好的去除效果。以期为村镇垃圾热解气化规范处置提供示范,并为热解气化炉二噁英排放控制提供参考。
- 热解 /
- 气化 /
- 生活垃圾 /
- 二噁英 /
- 排放特性
Abstract: Aiming at the problems of unstable operation and unqualified emission of small heat treatment furnaces for the disposal of rural domestic wastes, a new type of pyrolysis gasification incinerator for rural solid wastes was introduced, and the dioxins emission characteristics of flue gas and slag in a novel 30 t/d solid wastes gasification system were studied. The results were as follows:the emission of dioxin from slag was 0.723 μg I-TEQ/kg, which met the requirements of Standard of Pollution Control on the Landfill Site of Municipal Solid Waste (GB 16889-2008). When spraying activated carbon normally, the concentration of dioxin in tail flue gas was 0.029 ng I-TEQ/Nm³, lower than the dioxin emission limitation of Standard for Pollution Control on the Municipal Solid Waste Incineration (GB 18485-2014). The original emission concentration of dioxin from flue gas in the gasification and combustion process was low, and low-temperature heterogeneous synthesis reaction was the main source of dioxin in flue gas of the furnace. Furthermore, high chlorinated PCDD/Fs was dominant in mass concentration distribution, and 2,3,4,7,8-PeCDF played an important role in total toxic equivalent. Besides, spraying activated carbon had a good removal effect on dioxins. This study provided a demonstration for the standardized disposal of pyrolysis and gasification for rural domestic wastes, and a reference for dioxin emission control of the pyrolysis and gasification furnace.
- pyrolysis /
- gasification /
- domestic waste /
- dioxins /
- emission characteristics

HTML全文

参考文献(35)

[1]	席北斗, 侯佳奇. 我国村镇垃圾处理挑战与对策[J]. 环境保护, 2017,45(14):7-10.
[2]	袁国安. 生活垃圾热解气化技术应用现状与展望[J]. 环境与可持续发展, 2019,44(4):66-69.
[3]	徐善宝, 陕永杰, 王丽君, 等. 我国村镇生活垃圾热解气化技术的研究应用现状、问题与对策[C]//2017中国环境科学学会科学与技术年会, 中国福建厦门, 2017.
[4]	雷鸣. 小型农村生活垃圾热处理炉二噁英及重金属的排放特性及控制研究[D]. 广州:华南理工大学, 2017.
[5]	环境保护部,国家质量监督检验检疫总局. 生活垃圾焚烧污染控制标准:GB 18485-2014[S].北京:中国环境科学出版社,2014.
[6]	中华人民共和国住房和城乡建设部. 生活垃圾采样和分析方法:CJ/T 313-2009[S].北京:中国标准出版社,2009.
[7]	中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会. 煤的发热量测定方法:GB/T 213-2008[S]. 北京:中国质检出版社,2008.
[8]	中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会. 煤的元素分析:GB/T 31391-2015[S]. 北京:中国标准出版社,2015.
[9]	林晓青, 李晓东, 陆胜勇, 等. 垃圾焚烧炉二噁英排放特性与减排技术展望[J]. 热能动力工程, 2015,30(3):329-332.
[10]	俞明锋, 付建英, 詹明秀, 等. 生活废弃物焚烧处置烟气中二噁英排放特性研究[J]. 环境科学学报, 2018,38(5):1983-1988.
[11]	CHEN T, LI X D, YAN J H, et al. Distribution of polychlorinated dibenzo-p-dioxins and dibenzofurans in ambient air of different regions in China[J]. Atmospheric Environment, 2011,45(36):6567-6575.
[12]	张刚. 城市固体废物焚烧过程二噁英与重金属排放特征及控制技术研究[D]. 广州:华南理工大学, 2013.
[13]	MCKAY G. Dioxin characterisation, formation and minimisation during municipal solid waste (MSW) incineration:review[J]. Chemical Engineering Journal, 2002,86(3):343-368.
[14]	STANMORE B R. The formation of dioxins in combustion systems[Z]. Combustion & Flame, 2004, 136:398-427.
[15]	ALTWICKER E R. Some laboratory experimental designs for obtaining dynamic property data on dioxins[J]. Science of the Total Environment, 1991,104(1/2):47-72.
[16]	HUANG H, BUSKENS A. Comparison of dioxin formation levels in laboratory gas-phase flow reactors with those calculated using the Shaub-Tsang mechanism[J]. Chemosphere, 1999,38(7):1595-1602.
[17]	WEBER R, HAGENMAIER H. Mechanism of the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans from chlorophenols in gas phase reactions[J]. Chemosphere, 1999,38(3):529-549.
[18]	ADDINK R, OLIE K. Mechanisms of formation and destruction of polychlorinated dibenzo-p-dioxins and dibenzofurans in heterogeneous systems[J]. Environmental Science & Technology, 1995,29(6):1425-1435.
[19]	MATZING H. A simple kinetic model of PCDD/F formation by de novo synthesis[J]. Chemosphere, 2001,44(6):1497-1503.
[20]	曹玉春, 严建华, 李晓东, 等. 垃圾焚烧炉中二噁英生成机理的研究进展[J]. 热力发电, 2005,34(9):15-20 ,14.
[21]	ZHANG H J, NI Y W, CHEN J P, et al. Influence of variation in the operating conditions on PCDD/F distribution in a full-scale MSW incinerator[J]. Chemosphere, 2008,70(4):721-730.
[22]	孙敬龙. 城市生活垃圾焚烧过程二噁英合成机理及拟制方法实验研究[D]. 天津:天津大学, 2012.
[23]	环境保护部,国家质量监督检疫总局. 生活垃圾填埋场污染控制标准:GB 16889-2008[S].北京:中国环境科学出版社,2008.
[24]	张海军, 倪余文, 张雪萍, 等. 城市生活垃圾焚烧系统中二噁英的生成与质量平衡[J]. 环境科学, 2008,29(4):1133-1137.
[25]	ZHANG G, HAI J, CHENG J. Characterization and mass balance of dioxin from a large-scale municipal solid waste incinerator in China[J]. Waste Management, 2012,32(6):1156-1162.
[26]	ZHOU H, MENG A H, LONG Y Q, et al. A review of dioxin-related substances during municipal solid waste incineration[J]. Waste Management, 2015,36:106-118.
[27]	王天娇. 生活垃圾焚烧过程中二噁英及其关联物氯苯的特性研究[D]. 杭州:浙江大学, 2018.
[28]	陈宋璇, 黎小保. 生活垃圾焚烧发电中二噁英控制技术研究进展[J]. 环境科学与管理, 2012,37(5):89-93.
[29]	BABUSHOK V I, TSANG W. Gas-phase mechanism for dioxin formation[J]. Chemosphere, 2003,51(10):1023-1029.
[30]	HUANG H, BUEKENS A. On the mechanisms of dioxin formation in combustion processes[J]. Chemosphere, 1995,31(9):4099-4117.
[31]	雷鸣, 海景, 卢加伟, 等. 上吸式固定床气化炉处理生活垃圾时二噁英的形成与迁移[J]. 华南理工大学学报(自然科学版), 2017,45(11):139-146.
[32]	EVERAERT K, BAEYENS J. The formation and emission of dioxins in large scale thermal processes[J]. Chemosphere, 2002,46(3):439-448.
[33]	ANDERSSON S, KREISZ S, HUNSINGER H. Dioxin removal:adiox for wet scrubbers and dry absorbers[Z]. Filtration and Separation, 2005, 42:22-25.
[34]	CHOI K, LEE D, OSAKO M, et al. The prediction of PCDD/DF levels in wet scrubbers associated with waste incinerators[J]. Chemosphere, 2007,66(6):1131-1137.
[35]	籍龙杰, 郭颖, 陈彤, 等. 不同热处置生活垃圾烟气中二噁英的排放[J]. 热能动力工程, 2016,31(9):94-99.