Calcium transformation during Zhundong coal combustion process

HUANG Xiaohe; ZHANG Shouyu; YANG Jingning; JIANG Fenghao; WU Shunyan; MU Chen; LÜ Junfu

doi:10.11949/j.issn.0438-1157.20170350

您当前的位置：

首页 >

文章列表页 >

Calcium transformation during Zhundong coal combustion process

更新时间：2025-12-10

- Calcium transformation during Zhundong coal combustion process
- CIESC Journal Issue 10, Pages: 3906-3911(2017)
- 作者机构：
  
  1. 上海理工大学能源与动力工程学院,上海,200093
  2. 2清华大学热能工程系,北京,100084
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170350
  CLC： K16
- Online First：05 October 2017，
  
  Published：05 October 2017
- 稿件说明：
移动端阅览
HUANG Xiaohe, ZHANG Shouyu, YANG Jingning, et al. Calcium transformation during Zhundong coal combustion process[J]. CIESC Journal, 2017, (10): 3906-3911.
DOI：

HUANG Xiaohe, ZHANG Shouyu, YANG Jingning, et al. Calcium transformation during Zhundong coal combustion process[J]. CIESC Journal, 2017, (10): 3906-3911. DOI： 10.11949/j.issn.0438-1157.20170350.

摘要

采用3种萃取液（水、醋酸铵和盐酸）对准东煤进行逐级萃取实验，使用高温气氛炉对准东原煤及萃取后的煤样进行燃烧实验，使用电感耦合等离子体原子发射光谱仪和X射线衍射物相分析仪对萃取前后的固体煤样及燃烧后煤灰样品分别进行Ca元素分析和矿物检测。研究结果表明，准东煤中的钙元素主要以醋酸铵溶钙和盐酸溶钙形式存在。在燃烧过程中，准东煤中含钙矿物质与含硅、含铝矿物质反应生成硅钙石、斜硅钙石与钙铝石等；其中经水萃取后碱酸比减小，灰熔融温度升高，盐酸溶钙与含硅、含铝矿物质反应生成硅钙石、硅铝石等，不溶钙主要以稳定的硅铝酸盐形式存在。

Abstract

Sequential extraction was employed to determine the modes of occurrence of calcium in Zhundong coal.The samples from Zhundong coals before and after extraction were ashed in a high temperature atmosphere furnace.The calcium content of the coal and ash samples and the calcium-contained minerals in the samples were determined using an inductively coupled plasma atomic emission spectroscopy and X-ray diffraction analysis.The results indicated that the calcium contained in Zhundong coal was in the forms of water-soluble

ammonium acetate-soluble

hydrochloric acid-soluble and insoluble species

and the main calcium modes were the ammonium acetate-soluble and hydrochloric acid-soluble species

while the proportions of the water-soluble and insoluble-calcium were low.During the combustion process

the chemical reactions among the calcium-containing minerals

the silicon-containing minerals and aluminum-containing minerals in Zhundong coal occurred to form fukalite

mayenite

kilchoanite and rankinite.The base/acid ratio decreased and the ash melting temperature increased after water extraction.The hydrochloric acid-soluble calcium species reacted with the silicon-containing and aluminum-containing minerals

leading to form mayenite

kilchoanite and rankinite.The insoluble-calcium species existed in the form of margarite was stable in the coal during combustion process.

关键词

Keywords

references

Views

208

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effect of Ca species on sintering characteristics of Zhundong coal ash

Effects of Xinjiang high calcium coal co-firing on melting characteristics of Ca-bearing minerals in ash

Mineral transformation during Zhundong coal combustion by CCSEM

Life cycle carbon emission and environment assessment of pre-combustion IGCC power plant

Study on pressurized oxy-fuel co-combustion characteristics of coal and poultry litter

Related Author

HUANG Xiaohe

ZHANG Shouyu

Sheng CHEN

Dunxi YU

Jianqun WU

Yimin XIA

Yueming WANG

Minghou XU

Related Institution

State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology

Southern Research, National Carbon Capture Center (NCCC), Wilsonville

Department of Chemical Engineering and Institute for Clean and Secure Energy, University of Utah

School of Materials Science and Engineering, Jingdezhen Ceramic Institute

School of Energy and Environment, Southeast University

⁰