Emission characteristics of sulfurous pollutant from circulating fluidized bed boilers co-firing petroleum coke and coal

CUI Jian; DUAN Lunbo; ZHAO Changsui

doi:10.11949/j.issn.0438-1157.20171180

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Emission characteristics of sulfurous pollutant from circulating fluidized bed boilers co-firing petroleum coke and coal

更新时间：2025-12-10

- Emission characteristics of sulfurous pollutant from circulating fluidized bed boilers co-firing petroleum coke and coal
- CIESC Journal Issue 5, Pages: 2158-2165(2018)
- 作者机构：
  
  东南大学能源与环境学院, 能源热转换及其过程测控教育部重点实验室,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20171180
  CLC： 773
- Online First：05 May 2018，
  
  Published：05 May 2018
- 稿件说明：
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CUI Jian, DUAN Lunbo, ZHAO Changsui. Emission characteristics of sulfurous pollutant from circulating fluidized bed boilers co-firing petroleum coke and coal[J]. CIESC Journal, 2018, (5): 2158-2165.
DOI：

CUI Jian, DUAN Lunbo, ZHAO Changsui. Emission characteristics of sulfurous pollutant from circulating fluidized bed boilers co-firing petroleum coke and coal[J]. CIESC Journal, 2018, (5): 2158-2165. DOI： 10.11949/j.issn.0438-1157.20171180.

摘要

在3台配备了炉内脱硫+静电除尘器（ESP）/布袋除尘器（FF）+湿法脱硫装置（WFGD）的410 t·h-1循环流化床（CFB）锅炉进行了硫污染物排放特性研究。在3个测点采用US EPA Method 8对烟气中不同形态硫污染物进行了平行取样，并同时采集了相应工况下入炉燃料、石灰石、底渣、飞灰、石膏和废水等，考察了污染物控制装置对硫污染物的影响以及硫在电厂的迁移和分布特性。结果表明，锅炉出口烟气中硫主要以颗粒态硫和SO2的形式存在，占比分别为48.94%～55.05%和44.14%～49.07%。ESP和FF能高效脱除颗粒态硫，脱除效率均达95%以上；WFGD对SO3/硫酸雾、颗粒态硫的脱除效率分别达62.66%～67.82%和53.06%～60.89%。燃料中硫经过燃烧和污染物控制装置脱除之后绝大部分迁移至灰渣（底渣+飞灰）和湿法脱硫产物（石膏+废水）中，分别占硫总输出的56.79%～70.12%和29.25%～41.70%，只有0.63%～1.51%的硫排放到大气环境中。

Abstract

The emission characteristics and co-removal through air pollution control devices of sulfurous pollutant were conducted at three 410 t·h-1 circulating fluidized bed boilers equipped with in-situ desulfurization + electrostatic precipitator (ESP)/fabric filter (FF) + wet flue gas desulfurization (WFGD). The US EPA Method 8 was used for the sampling of various forms of sulfurous pollutant in flue gas. Concurrent with flue gas sampling

the feed fuel

limestone

bottom ash

fly ash

gypsum and wastewater were sampled. The results showed that particulate-bound sulfur and SO2 are the dominant species in the flue gas at the outlet of boilers

accounting for 48.94%-55.05% and 44.14%-49.07%

respectively. The removal efficiency of particulate-bound sulfur by ESP or FF is more than 95%. About 62.66%-67.82% of SO3/sulfuric acid mist and 53.06%-60.89% of particulate-bound sulfur in flue gas was removed by WFGD

respectively. The majority of sulfur in fuel was migrated into fly ash + bottom ash and gypsum + wastewater

accounting for 56.79%-70.12% and 29.25%-41.70%

respectively. Only 0.63%-1.51% of total output sulfur was emitted into atmosphere.

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