生物质与生活垃圾共气化过程重金属的迁移转化规律

葛金林; 肖海平; 闫大海

doi:10.12096/j.2096-4528.pgt.20060

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生物质与生活垃圾共气化过程重金属的迁移转化规律

厂界环保岛与数字孪生技术 | 更新时间：2025-07-04

- 生物质与生活垃圾共气化过程重金属的迁移转化规律
- Migration and Transformation of Heavy Metals in the Co-gasification of Biomass and Municipal Waste
- 发电技术 2020年41卷第5期页码：552-560
- 作者机构：
  
  1.华北电力大学能源动力与机械工程学院, 北京市昌平区 102206
  2.中国环境科学研究院固体废物污染控制技术研究所, 北京市朝阳区 100012
- 作者简介：
  
  [ "葛金林(1996), 男, 硕士研究生, 研究方向为燃煤污染物的排放机理及控制技术, gejinlin@126.com" ]
  肖海平(1978), 男, 博士, 副教授, 主要从事燃煤污染物的排放机理与控制技术等方面的研究, 本文通信作者, xiaohaiping@ncepu.edu.cn
  [ "闫大海(1979), 男, 博士, 研究员, 主要从事固体废物处理技术等方面的研究, seavsland@163.com" ]
- 基金信息：
  
  国家重点研发计划项目(2017YFC0703206)
- DOI：10.12096/j.2096-4528.pgt.20060
  中图分类号： TK16
- 收稿：2020-08-06，
  
  纸质出版：2020-10-31
- 稿件说明：
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葛金林, 肖海平, 闫大海. 生物质与生活垃圾共气化过程重金属的迁移转化规律[J]. 发电技术, 2020,41(5):552-560.

Jinlin GE, Haiping XIAO, Dahai YAN. Migration and Transformation of Heavy Metals in the Co-gasification of Biomass and Municipal Waste[J]. Power Generation Technology, 2020, 41(5): 552-560.
葛金林, 肖海平, 闫大海. 生物质与生活垃圾共气化过程重金属的迁移转化规律[J]. 发电技术, 2020,41(5):552-560. DOI： 10.12096/j.2096-4528.pgt.20060.

Jinlin GE, Haiping XIAO, Dahai YAN. Migration and Transformation of Heavy Metals in the Co-gasification of Biomass and Municipal Waste[J]. Power Generation Technology, 2020, 41(5): 552-560. DOI： 10.12096/j.2096-4528.pgt.20060.

摘要

为了研究流化床生物质气化协同处置生活垃圾衍生燃料过程中重金属的迁移转化规律，在湖北某循环流化床气化炉耦合燃煤发电厂进行掺烧试验。研究表明重金属主要赋存于飞灰和炉渣中。空白工况下86.2%的Cr赋存于飞灰中，13.3%于炉渣中；75.5%的Pb在飞灰中，23.8%在炉渣中；79.5%的As迁移至飞灰中，11.7%在炉渣中。RDF工况下75.8%的Cr迁移至飞灰，20.7%迁移至炉渣；44.6%的Pb存在于飞灰中，52%存在于炉渣。协同处置后，重金属在飞灰和炉渣中的分配比例明显发生了变化，飞灰中重金属含量减少12.5%~31.3%，炉渣中重金属增加7.33%~20.1%，气化气的引入改变了炉内重金属的分配情况。协同处置可以有效处理生活垃圾，对固废中的热量进行资源化利用，且出炉物料中重金属含量均低于我国现行标准限值。

Abstract

In order to study the migration and transformation rules of heavy metals in the process of gasification coupling with domestic waste-derived fuel in gasification of circulating fluidized bed coal-fired power plants

a mixed combustion test was conducted in a circulating fluidized bed gasifier in Hubei province. Studies have shown that heavy metals are mainly found in fly ash and slag. Under blank conditions

86.2% of Cr was stored in fly ash

13.3% in slag; 75.5% of Pb in fly ash

23.8% in slag; 79.5% of As migrates to fly ash

11.7% in slag. Under cooperative conditions

75.8% of Cr migrated to fly ash

20.7% to slag; 44.6% of Pb was in fly ash

and 52% was in slag. After co-processing

the distribution ratio of heavy metals in fly ash and slag has obviously changed. The heavy metal content in fly ash had decreased by 12.5%-31.3%

and the heavy metal in slag had increased by 7.33%-20.1%. The introduction of gasification gas changed the distribution of heavy metals in the furnace. Co-processing can effectively dispose of domestic waste

utilize the heat in solid waste for resource utilization

and the content of heavy metals in the discharged materials is lower than the current standard.

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