中国科学院地球环境研究所机构知识库
Advanced  
IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)  > 期刊论文
题名: Geochemical behavior of hazardous volatile elements in coals with different geological origin during combustion
作者: Hu, Guangqing1, 2, 3;  Liu, Guijian1, 3;  Wu, Dun1, 2;  Fu, Biao1, 3
关键词: Geochemical behavior ;  Hazardous elements ;  Volatilization rate ;  Heating rate ;  Combustion
刊名: FUEL
发表日期: 2018-12-01
DOI: 10.1016/j.fuel.2018.06.069
卷: 233, 页:361-376
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Energy & Fuels ;  Engineering, Chemical
研究领域[WOS]: Energy & Fuels ;  Engineering
英文摘要: The geochemical behaviors of hazardous elements in the combustion process of Chinese coals with different geological origins at different temperatures were studied. The analyzed coal samples were placed in a fixed bed reactor with a quartz tube and heated to six desired temperature points, from 400 degrees C to 900 degrees C with 100 degrees C for each interval. The mineral morphology and composition of coal and coal ash were determined by X-ray fluorescence (XRF), scanning electron microscope-X-ray Energy Dispersive Spectrom (SEM-EDS) and X-ray powder diffraction techniques (XRD). Sequential chemical extraction procedure was used to describe the modes of occurrence of selected hazardous elements in coal. The content of arsenic (As) in coal and coal ash was analyzed by inductively coupled plasma mass spectrometry (ICP-MS), and the content of selenium (Se) and mercury (Hg) in coal ash was analyzed by atomic emission spectrometry (AES) and atomic fluorescence spectrometry (AFS). The volatile characteristics of As, Se and Hg in coal were studied by thermogravimetry (TG). The results show that: 1) the mineral phases of Liuzhuang (LZ) and Huajiahu (HJH) coal samples are mainly composed of clay minerals and silicate minerals and the contents of As, Se and Hg were closely related to the organic matter and inorganic mineral in coal; 2) As mainly exists in organic matter and Se, Hg mainly exists in silicate minerals. The organic As in coal is closely related to the low-rank, low ash content and low As content of coal. The modes of occurrence of Se and Hg may be related to the low element content, low sulfide content in coal and stable sedimentary environment; 3) the relationship between volatilization rate (Vr) of As, Se and Hg elements and combustion temperature is the closest. The differences of Vr of As, Se and Hg elements in coal of different geological origin are mainly related to elements concentration and coal quality; 4) at different heating rates, the Vr curves of As, Se and Hg elements have the characteristics of "S" type, logarithmic type and linear type, respectively; The Initial stable temperature of Vr is different under the influence of element geochemical characteristics. The volatility of As reaches the maximum at 800 degrees C, and Se and Hg reach the maximum at 700 degrees C and 600 degrees C, respectively; 5) The heating rate and the difference of coal quality under different geological origin are important factors affecting the Vr of As, Se and Hg. The maximum weight loss temperature (TP) can be used as an important index to reflect the influence of coal quality and heating rate on the Vr of hazardous elements (As, Se and Hg).
关键词[WOS]: POLYCYCLIC AROMATIC-HYDROCARBONS ;  FLUIDIZED-BED COMBUSTION ;  FLY-ASH PARTICLES ;  TRACE-ELEMENTS ;  HUAINAN COALFIELD ;  SANTA-CATARINA ;  POWER-PLANT ;  HUMAN HEALTH ;  NORTH CHINA ;  TRANSFORMATION BEHAVIOR
语种: 英语
WOS记录号: WOS:000441893200038
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.ieecas.cn/handle/361006/5349
Appears in Collections:黄土与第四纪地质国家重点实验室(2010~)_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China
2.Anhui Prov Bur Coal Geol, Explorat & Res Inst, Hefei 230088, Anhui, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shanxi, Peoples R China

Recommended Citation:
Hu, Guangqing,Liu, Guijian,Wu, Dun,et al. Geochemical behavior of hazardous volatile elements in coals with different geological origin during combustion[J]. FUEL,2018,233:361-376.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Hu, Guangqing]'s Articles
 [Liu, Guijian]'s Articles
 [Wu, Dun]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Hu, Guangqing]‘s Articles
 [Liu, Guijian]‘s Articles
 [Wu, Dun]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院地球环境研究所 - Feedback
Powered by CSpace