Study on the formation characteristics of fine particulate matter under the combustion condition of high-alkali and high-chlorine coal in Xinjiang

XU Meng; MA Jinrong; WANG Jianjiang; WEI Bo; CHEN Lijuan; AN Tiantian

doi:10.19666/j.rlfd.202310156

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Study on the formation characteristics of fine particulate matter under the combustion condition of high-alkali and high-chlorine coal in Xinjiang

更新时间：2025-09-28

- Study on the formation characteristics of fine particulate matter under the combustion condition of high-alkali and high-chlorine coal in Xinjiang
- Thermal Power Generation Vol. 53, Issue 1, Pages: 46-52(2024)
- 作者机构：
  
  1. 新疆大学化工学院,新疆煤炭清洁转化与化工过程重点实验室
  2. 新疆新业能源化工有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202310156
  CLC： TQ534
- Published：2024
- 稿件说明：
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XU Meng, MA Jinrong, WANG Jianjiang, et al. Study on the formation characteristics of fine particulate matter under the combustion condition of high-alkali and high-chlorine coal in Xinjiang[J]. Thermal power generation, 2024, 53(1): 46-52.
DOI：

XU Meng, MA Jinrong, WANG Jianjiang, et al. Study on the formation characteristics of fine particulate matter under the combustion condition of high-alkali and high-chlorine coal in Xinjiang[J]. Thermal power generation, 2024, 53(1): 46-52. DOI： 10.19666/j.rlfd.202310156.

摘要

为比较新疆地区典型高碱煤和高氯煤在燃烧条件下颗粒物生成特性，采用三段式高温沉降炉系统开展在空气气氛下燃烧准东煤和沙尔湖煤的实验，分析燃烧后颗粒物特征。采用Dekati低压撞击器（Dekati low pressure impactor+

DLPI+）进行了颗粒物的分级收集，对其质量粒径分布、元素分布特性以及颗粒物微观形貌进行了讨论分析。结果表明：2种煤样燃烧生成的颗粒物均呈现双模态分布，沙尔湖煤的细颗粒物产率明显高于准东煤；细模态颗粒物的主要成分是Na和Cl，准东煤与沙尔湖煤产生的PM_(10)中的Cl占原煤中Cl质量的11.8%和28.9%

Na占煤灰中Na质量的2.66%和7.53%；高含量的碱金属和Cl会促进细颗粒物生成，沙尔湖原煤中的Cl大量迁徙进入颗粒物中，对细模态颗粒的生成贡献较大。

Abstract

In order to compare the particle formation characteristics of typical high-alkali and high-chlorine Xinjiang coal under combustion conditions

a three-stage high temperature drop tube furnace was used to carry out the combustion experiment of Zhundong coal(ZD) and Shaerhu coal(SEH) in air atmosphere. The characteristics of particulate matter after combustion were analyzed. Particulate matters were collected by Dekati low pressure impactor+(DLPI+) and the mass-based particle size distribution

elemental compositions and morphology were discussed. The results showed that the particulate matter produced by the combustion of the two coal samples presents a double-peaked model. The fine particle yield of SEH is significantly higher than that of ZD. The main components of sub-micron particles were Na and Cl. The Cl in PM_(10) accounts for 11.8% and 28.9%of the Cl content in ZD and SEH raw coal

and Na accounts for 2.66% and 7.53% of the Na content in ZD and SEH coal ash. High levels of alkali metals and Cl promoted the formation of fine particles. A large amount of Cl in SEH raw coal migrated into particles and contributed greatly to the formation of sub-micron particles.

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