Effects of transition metal additives on desulfurization of coal in pyrolysis

HUANG Ji-qing; BAI Zong-qing; BAI Jing; GUO Zheng-xing; LI Wen

Volume 40 Issue 06

Jun. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(06): 641-647

HUANG Ji-qing, BAI Zong-qing, BAI Jing, GUO Zheng-xing, LI Wen. Effects of transition metal additives on desulfurization of coal in pyrolysis[J]. Journal of Fuel Chemistry and Technology, 2012, 40(06): 641-647.

Citation:

HUANG Ji-qing, BAI Zong-qing, BAI Jing, GUO Zheng-xing, LI Wen. Effects of transition metal additives on desulfurization of coal in pyrolysis[J]. Journal of Fuel Chemistry and Technology, 2012, 40(06): 641-647.

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Effects of transition metal additives on desulfurization of coal in pyrolysis

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2011-09-11
Rev Recd Date: 2011-12-03
Publish Date: 2012-06-30

Abstract

Abstract

The effects of different Fe, Cr and Mn additives on the desulfurization of coking coal with high sulfur during coking process were investigated by crucible coke. Also, the effects of the additives on the desulfurization during coal pyrolysis and the evolution of sulfur-containing gases under different atmospheres were examined in a fixed bed reactor. The results indicate that the effects of additives on the sulfur forms of coal are different. Fe³⁺ which has an oxidability decreases the pyrite content of coal while other additives have little effect on the sulfur forms of coal. Chromium additives increase the desulfurization of coal pyrolysis, but iron and manganese additives decrease that during simulated coking process. The pyrolysis of Cr³⁺ loaded Jiexiu coal indicates that the desulfurization of coal with Cr³⁺ under N₂ is restrained and the evolution of sulfur-containing gases is decreased, and the unstable organic sulfurs are converted to stable organic sulfurs; on the other hand, the desulfurization of coal with Cr³⁺ is facilitated under reductive atmospheres and the yield of sulfur-containing gases is obviously increased. The effects of the simulated coke oven gas (SCOG) on the desulfurization of coal with additives and the evolution of sulfur-containing gases during pyrolysis are similar to those of H₂, so SCOG can be used as the reaction atmosphere for increasing the desulfurization during pyrolysis with transition metals additives.
- transition metal additives,
- high sulfur coking coal,
- pyrolysis,
- coking,
- desulfurization

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References(15)

References

李文, 于惠梅, 陈皓侃, 李保庆. 矿物质脱除对煤中硫在氢气热解中逸出的影响 [J]. 中国矿业大学学报, 2003, 32(6): 646-649. (LI Wen, YU Hui-mei, CHEN Hao-kan, LI Bao-qing. Effect of demineralization of coal on its sulfur evolution during pyrolysis in H₂ atmosphere [J].Journal of China University of Mining & Technology, 2003, 32(6): 646-649.)

陈皓侃, 李保庆, 张碧江. 矿物质对煤热解和加氢热解含硫气体生成的影[J]. 燃料化学学报, 1999, 27(增刊): s5-s10. (CHEN Hao-kan, LI Bao-qing, ZHANG Bi-jiang. Effects of mineral matter on evolution of sulfur containing gases in pyrolysis and hydropyrolysis [J]. Journal of Fuel Chemistry and Technology, 1999, 27(suppl): s5-s10.)

RASHID KHAN M. Prediction of sulphur distribution in products during low temperature coal pyrolysis and gasification [J]. Fuel, 1989, 68(11): 1439-1449.

赵改菊, 路春美, 田园, 樊兆燕, 赵建立, 张宗宇. 赤泥的固硫特性及其机理研究 [J]. 燃料化学学报, 2008, 36(3): 365-370. (ZHAO Gai-ju, LU Chun-mei, TIAN Yuan, FAN Zhao-yan, ZHAO Jian-li, ZHANG Zong-yu. Desulfurization characteristic and mechanism of red mud from alumina plant [J]. Journal of Fuel Chemistry and Technology, 2008, 36(3): 365-370)

唐惠庆, 刘军利, 郭占成. 炼焦过程氧化铅高温焦炉煤气均相脱硫的研究[J]. 燃料化学学报, 2003, 31(5): 485-488. (TANG Hui-qing, LIU Jun-li, GUO Zhan-cheng. Homogeneous desulfurization of high temperature coke oven gas by use lead oxide additives [J]. Journal of Fuel Chemistry and Technology, 2003, 31(5): 485-488.)

钟祥云. 添加剂对炼焦煤在干馏过程中脱硫性能影响的研究 . 鞍山: 辽宁科技大学, 2008. (ZHONG Xiang-yun. Study of the effects of additives on desulfurization properties of coking coal in coking . Anshan: Liaoning University of Science and Technology, 2008.)

LIU Quan-run, HU Hao-quan, ZHU Sheng-wei, ZHOU Qiang, LI Wen-ying, WEIXian-yong, XIE Ke-chang. Desulfurization of coal by pyrolysis and hydropyrolysis with addition of KOH/NaOH [J]. Energy Fuels, 2005, 19(4): 1673-1678.

陈启厚, 杨俊和. 坩埚焦性质的研究 [J]. 燃料与化工, 2001, 32(3): 124-127. (CHEN Qi-hou, YANG Jun-he. Research on crucible coke nature [J]. Fuel & Chemical Processes, 2001, 32(3): 124-127.)

傅献彩, 沈文霞, 姚天扬. 物理化学(第四版) [M]. 北京: 高等教育出版社, 1990年: 603-605. (FU Xian-cai, SHEN Wen-xia, YAO Tian-yang. Physical chemistry [M]. 4th ed. Beijing: Higher Education Press, 1990: 603-605.)

YUROVSKII A Z. Sulfur in coals [M]. Moscow: Academy of the Sciences of the USSR, 1960: 92-94. (Translated into English and published for US Department of Interior by Indian National Scientific Documentation Center, New Delhi, 1974)

MEYERS R A. Coal desulfurization[M]. New York: Marcel Dekker, 1977: 215-216.

FURFARI S, CYRES R. Hydropyrolysis of a high-sulphur-high-calcite Italian Sulcis coal: 2 Importance of the mineral matter on the sulphur behaviour [J]. Fuel, 1982, 61(5): 453-459.

ZHANG Dong-ke. 低阶煤程序升温热解过程中钠、硅和硫间的相互作用[J]. 燃料化学学报, 2005, 33(5): 513-519. (ZHANG Dong-ke.Interactions between sodium, silica and sulphur in a low-rank coal during temperature-programmed pyrolysis [J]. Journal of Fuel Chemistry and Technology, 2005, 33(5): 513-519.)

陈皓侃. 热解和加氢热解过程中硫变迁规律的研究 . 太原, 山西: 中国科学院山西煤炭化学研究所, 1998. (CHEN Hao-kan. Transformation of sulfur during pyrolysis and hudropyrolysis of coal . Taiyuan, Shanxi: Institute of Coal Chemistry, Chinese Academy of Sciences, 1998.)

SHEVKOPLAYS V N, SARANCHUK V I. The impregnation effect on low and middle rank coals structure reorganization and their behavior during pyrolysis [J]. Fuel, 2000, 79(5): 557-565.

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