基于硫基循环抑制技术的危险废物焚烧炉二(口恶)英排放的控制

doi:10.3969/j.issn.0438-1157.2014.11.054

化工学报 ›› 2014, Vol. 65 ›› Issue (11): 4593-4598.DOI: 10.3969/j.issn.0438-1157.2014.11.054

基于硫基循环抑制技术的危险废物焚烧炉二(口恶)英排放的控制

吴海龙^1,2, 林晓青², 严密^2,3, 陈彤², 陆胜勇², 李晓东², 严建华²

1. 舟山市环境保护局, 浙江舟山 316021;
2. 浙江大学热能工程研究所, 能源清洁利用国家重点实验室, 浙江杭州 310027;
3. 浙江工业大学能源与动力工程研究所, 浙江杭州 310014

收稿日期:2014-05-07 修回日期:2014-07-01 出版日期:2014-11-05 发布日期:2014-11-05
通讯作者: 陆胜勇
基金资助:
国家重点基础研究发展计划项目(2011CB201503);国家高技术研究发展计划项目(2012AA062803).

Dioxins emission control from hazardous waste incinerator by SO₂ recycling inhibition

WU Hailong^1,2, LIN Xiaoqing², YAN Mi^2,3, CHEN Tong², LU Shengyong², LI Xiaodong², YAN Jianhua²

1. Environment Protection Bureau of Zhoushan, Zhoushan 316021, Zhejiang, China;
2. State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China;
3. Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China

Received:2014-05-07 Revised:2014-07-01 Online:2014-11-05 Published:2014-11-05
Supported by:
supported by the National Basic Research Program of China (2011CB201503) and the National High Technology Research and Development Program of China (2012AA062803).

摘要/Abstract

摘要： 依托某危险废物焚烧炉(50 t·d^-1)开发了一套硫基循环抑制及飞灰低温热处置联用控制二(口恶)英排放的中试平台,研究了该系统对硫基的循环累积能力及对烟气中二(口恶)英合成的抑制能力.系统利用吸附剂吸附了烟气中SO₂,并在低温热处置装置中将吸附剂中SO₂脱附回烟气中,实现SO₂循环.试验结果表明,该系统能连续稳定运行,对烟气中的SO₂具有一定的富集累积能力,添加一定量外源硫基物质后系统中烟气SO₂能维持在100 mg·m^-3左右,对整体二(口恶)英排放因子的去除率达80%以上.可见,该硫基循环抑制技术对废物处理过程中二(口恶)英减排具有重要指导价值,且长期稳定运行对控制二(口恶)英低排放起关键作用,但该中试系统的相关参数需进一步优化.

关键词: 废物处理, 二(口恶)英, 合成, 抑制, 吸附, 脱附, 优化

Abstract: Sulfur acts as an effective inhibitor of dioxins formation, and such action has been proved in laboratory studies, but few studies in actual waste incinerators are reported. To control the emission of dioxins from hazardous waste incinerator (HWI) effectively, a new pilot scale system with SO₂ recycling and fly ash thermal treatment from the bypass flue gas in an actual HWI (50 t·d^-1) was developed. An absorbent was used to realize SO₂ recycling by which SO₂absorption was conducted by the absorbent in the flue gas and SO₂desorption was conducted in the low-temperature thermal treatment system. The capacity of SO₂ accumulation and inhibition of dioxins synthesis of the system was studied, and it was found that the system could operate continuously. The system could maintain a high SO₂concentration of 100 mg·m^-3 after adding a certain amount of other S-compounds and reduce more than 80% of dioxins emission factor. Therefore, the SO₂ recycling inhibition technology provides guidance for dioxin emission reduction during waste treatment, and the long-term stable operation of the system will play a key role in achieving low emission of dioxins, but some relevant parameters of the pilot system still need further optimization.

Key words: waste treatment, dioxins, synthesis, inhibition, absorption, desorption, optimization

中图分类号:

TK229
X705

吴海龙, 林晓青, 严密, 陈彤, 陆胜勇, 李晓东, 严建华. 基于硫基循环抑制技术的危险废物焚烧炉二(口恶)英排放的控制[J]. 化工学报, 2014, 65(11): 4593-4598.

WU Hailong, LIN Xiaoqing, YAN Mi, CHEN Tong, LU Shengyong, LI Xiaodong, YAN Jianhua. Dioxins emission control from hazardous waste incinerator by SO₂ recycling inhibition[J]. CIESC Journal, 2014, 65(11): 4593-4598.

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基于硫基循环抑制技术的危险废物焚烧炉二(口恶)英排放的控制

Dioxins emission control from hazardous waste incinerator by SO₂ recycling inhibition

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基于硫基循环抑制技术的危险废物焚烧炉二(口恶)英排放的控制

Dioxins emission control from hazardous waste incinerator by SO2 recycling inhibition

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Dioxins emission control from hazardous waste incinerator by SO₂ recycling inhibition