Citation: Yang LI, Zi-long LU, He YANG, Li-jun JIN, Hao-quan HU. Release characteristics of arsenic, selenium, lead and transformation of minerals during ashing process of coal[J]. Journal of Fuel Chemistry and Technology, ;2022, 50(1): 11-18. doi: 10.1016/S1872-5813(21)60115-9 shu

Release characteristics of arsenic, selenium, lead and transformation of minerals during ashing process of coal

State Key Laboratory of Fine Chemicals, Institute of Coal Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China

Corresponding author: Hao-quan HU, hhu@dlut.edu.cn
Received Date: 8 April 2021
Revised Date: 10 May 2021

Figures(7)

In this paper, two kinds of coal (Baiyinhua lignite and coal using in Ezhou Power Plant) were selected to study the occurrence of heavy metals including arsenic (As), selenium (Se) and lead (Pb) in coal and their release behaviors during the ashing process. The influence of ashing conditions on the mineral conversion was also examined by the combination with the changes of minerals in coal. The burn-out temperature of the coal was determined from the thermal weight loss curve by extrapolation method, and then the coal sample was ashed according to the National Standard Method of China. The obtained ash samples were characterized by XRD, XRF, and TG-DTG to analyze the change characteristics of coal minerals at different ashing temperatures. The content and occurrence of As, Se and Pb in coal samples were extracted by sequential chemical extraction method. The heavy metals in the ash sample were extracted by HNO₃ + HF, and the heavy metal content in the extract was detected by Inductively Coupled Plasma Mass Spectrometer (ICP-MS). The results show that the heavy metal in BYH coal is mainly As in the form of sulfide bound state, which leads to the increasing volatility of As with temperature easily. However, the heavy metal in EZ is mainly sulfide-bound Pb, which makes it easy to release with temperature. Se in coal mainly exists in the form of organic bound state and sulfide bound state. During coal ashing, kaolin is gradually dehydroxylated into metakaolin and finally converted into mullite; pyrite is oxidized to form hematite; gypsum is dehydrated to form anhydrite. The release rate of heavy metals is greatly affected by the combustion temperature during the ashing process. High content of heavy metals in the sulfide bound state results in high release rate with increasing the temperature.
- coal,
- heavy metal,
- sequential chemical extraction,
- ashing method,
- mineral
1. [1]
  National Bureau of Statistics[DB/OL]. https://data.stats.gov.cn/easyquery.htm?cn=C01&zb=A070E&sj=2020.
2. [2]
  CHENG C M, PAULINE H, PAUL C, CHANG Y N, LIN T Y. Partitioning of mercury, arsenic, selenium, boron, and chloride in a full-scale coal combustion process equipped with selective catalytic reduction, electrostatic precipitation, and flue gas desulfurization systems[J]. Energy Fuels,2009,23:4805−4816. doi: 10.1021/ef900293u
3. [3]
  GUO J F, YAO D X, CHEN P, CHEN J, SHI F J. Distribution, enrichment and modes of occurrence of arsenic in Chinese coals[J]. Minerals,2017,7(7):1−23.
4. [4]
  TESSIE R A, CAMPBELL P G C, BISSON M. Sequential extraction procedure for the speciation of particulate trace metals[J]. Anal Chem,1979,51(7):844−851. doi: 10.1021/ac50043a017
5. [5]
  QUEVAUVILLE R Ph, RAURET G, GRIEPINK B. Single and sequential extraction in sediments and soils[J]. Int J Environ Anal Chem,1993,51(1/2/3/4):231−235.
6. [6]
  LUO Yun, GIAMMAR D E, HUHMANN B L, CATALANO J G. Speciation of selenium, arsenic, and zinc in class C fly ash[J]. Energy Fuels,2011,25(7):2980−2987. doi: 10.1021/ef2005496
7. [7]
  ZHU Zhen-wu, ZHUO Yu-quan. Effect of acid systems for determination of trace elements in coal combustion byproducts using microwave digestion method[J]. J Qinghua Univ,2016,56(10):1072−1078.
8. [8]
  YU Z S, SUN X L, ZHANG Q. Using 37Cl16O/52Cr to correct 40Ar35Cl interference for the analysis of arsenic in geo-chemical exploration samples by inductively coupled plasma-mass spectrometry[J]. Chin J Anal Chem,2008,36(11):1571−1574.
9. [9]
  GOODARZI F, GENTZIS T, HOFMEISTER M. Elemental composition of fluvial-lacustrine and lacustrine coal-bearing environments, british columbia, canada[J]. Energy Fuels,2020,34(12):16046−16058. doi: 10.1021/acs.energyfuels.0c03025
10. [10]
  SONG D Y, QIN Y, ZHANG J Y, WANG W F, ZHANG C G. Concentration and distribution of trace elements in some coals from Northern China[J]. Int J Coal Geol,2007,69(3):179−191. doi: 10.1016/j.coal.2006.04.001
11. [11]
  COLEMAN L, BRAGG L J, FINKELMAN R B. Distribution and mode of occurrence of selenium in united-states coals[J]. Environ Geochem HLTH,1993,15(4):215−227. doi: 10.1007/BF00146745
12. [12]
  YANG Yan-mei, YANG xin-hua, LIU Qing, ZHANG Hai, LV Jun-fu. Effect of ashing temperature on analysis of Zhundong coal ash[J]. J China Coal Soc,2016,41(10):2441−2447.
13. [13]
  KANG Y, LIU G J, CHOU C L, WONG M H, ZHENG L G, DING R. Arsenic in Chinese coals: Distribution, modes of occurrence, and environmental effects[J]. Sci Total Environ,2011,412−413:1−13. doi: 10.1016/j.scitotenv.2011.10.026
14. [14]
  DAI Shi-feng, REN De-yi, LI Sheng-sheng. Occurrence and sequential chemical extraction of rare earth element in coals and seam roofs[J]. J China Univ Min Technol,2002,31(5):349−353. doi: 10.3321/j.issn:1000-1964.2002.05.003
15. [15]
  LIU Jing, ZHENG Chu-guang, ZHANG Jun-ying, WANG Man-hui. Study on the speciation of most volatile trace elements in coal[J]. J Combust Sci Technol,2003,9(4):295−299. doi: 10.3321/j.issn:1006-8740.2003.04.002
16. [16]
  WANG Qing, LIU Tong, BAI Jing-ru, JIAO Guo-jun, WEI Yan-zhen. Sequential chemical extraction technology and its applications in coal trace element occurrence study[J]. Technol Develop Chem Ind,2010,39(4):25−29. doi: 10.3969/j.issn.1671-9905.2010.04.009
17. [17]
  WANG C B, LIU H M, ZHANG Y, ZOU C, EDWARD J A. Review of arsenic behavior during coal combustion: Volatilization, transformation, emission and removal technologies[J]. Prog Energy Combust Sci,2018,68:1−28. doi: 10.1016/j.pecs.2018.04.001
18. [18]
  HU G Q, LIU G J, WU D, FU B. Geochemical behavior of hazardous volatile elements in coals with different geological origin during combustion[J]. Fuel,2018,233:361−376.
19. [19]
  GONG Hong-yu, HU Hong-yun, LIU Hui-min, LI Shuai, HUANG Yong-da, FU Biao, LUO Guang-qian, YAO Hong. Review of arsenic transformation and emission control during coal combustion[J]. Proc CSEE,2020,40(22):7337−7349.
20. [20]
  HAN Jun, WANG Guang-hui, XU Minghou, YAO Hong. Experimental study of As and Se’s vaporization during coal combustion and pyrolysis[J]. J Huazhong Univ Sci Technol,2009,37(5):113−119.
21. [21]
  FANG T, LIU G J, ZHOU C C, SUN R Y, CHEN J, WU D. Lead in Chinese coals: Distribution, modes of occurrence, and environmental effects[J]. Environ Geochem HLTH,2014,36(3):563−81. doi: 10.1007/s10653-013-9581-4
22. [22]
  WANG C A, LIU Y He, ZHANG X M, CHE D F. A Study on coal properties and combustion characteristics of blended coals in northwestern China[J]. Energy Fuels,2011,25(8):3634−3645. doi: 10.1021/ef200686d
23. [23]
  ZHANG Xiao-yu, ZHANG Hai-xia, NA Yong-jie. Migration characteristics and morphological changes of sodium during ashing process of Zhundong coal[J]. Clean Coal Technol,2015,21(2):45−55.
24. [24]
  YANG Y H, HU H Y, XIE K, HUANG Y D, LIU H, LI X, YAO H, ICHIRO N. Insight of arsenic transformation behavior during high-arsenic coal combustion[J]. Proc Combust Inst,2019,37(4):4443−4450. doi: 10.1016/j.proci.2018.07.064
25. [25]
  YU Dun-xi, XU Ming-hou, YAO Hong, LIU Xiao-wei, ZHOU Ke. Transformation of inorganic minerals into particulate matter during coal combustion[J]. J Eng Thermophys,2008,29(3):507−510. doi: 10.3321/j.issn:0253-231X.2008.03.037
26. [26]
  ZHAN Jing, XU Ming-hou, HAN Jun, QIAO Yu, CAI Ming. Research on the volatilization behavior of arsenic and selenium during coal combustion[J]. J Eng Thermophys,2004,25:201−204. doi: 10.3321/j.issn:0253-231X.2004.02.006
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