CATALYTIC GASIFICATION OF PITTSBURGH COAL CHAR BY POTASSIUM-SULFATE AND FERROUS SULFATE MIXTURES

被引:10
作者
AKYURTLU, JF
AKYURTLU, A
机构
[1] Department of Engineering, Hampton University, Hampton
关键词
D O I
10.1016/0378-3820(94)00127-F
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The main objective of this investigation is to evaluate the catalytic activity of (K-2 SO4 + FeSO4) mixtures in the steam gasification of Pittsburgh coal char and to compare it with that of K2CO3. A catalyst composition corresponding to an atomic K/Fe ratio of 9 gave the highest conversion for the gasification of Pittsburgh coal (PSOC 1451) char with H2O/H-2 and H2O/N-2 mixtures, the conversion being higher than that with K2CO3 in the case of H2O/N-2-gasification. This behavior is attributed to the catalysis of the reduction of K2SO4 by iron. The catalyst composition affects the product composition: CO selectivity in the product gas increases while CH4 selectivity decreases with the potassium content of the catalyst mixture.
引用
收藏
页码:71 / 86
页数:16
相关论文
共 21 条
  • [1] Wood, Sancier, Catalytic gasification of coal char, Catal. Rev.-Sci. Eng., 26, pp. 233-279, (1984)
  • [2] Spiro, McKee, Juntgen, Investigations on the alkali-catalyzed steam gasification of coal: Kinetics and interactions of alkali catalyst with carbon, Fuel, 62, pp. 196-199, (1983)
  • [3] McKee, Spiro, Kosky, Lamby, Catalysis of coal char gasification by alkali metal salts, Fuel, 62, pp. 217-220, (1983)
  • [4] Mims, Pabst, Alkali-catalyzed carbon gasification, I. Nature of the active sites, Am. Chem. Soc., Fuel Chem. Div. Prepr., 25, pp. 258-262, (1980)
  • [5] Lizzio, Radovic, Transient kinetics study of catalytic char gasification in carbon dioxide, Ind. Eng. Chem. Res., 30, pp. 1735-1744, (1991)
  • [6] Huttinger, Adler, Hermann, Iron-catalyzed water vapor gasification of carbon, Carbon and Coal Gasification, Proceedings of the NATO ASI on Carbon and Coal Gasification-Science and Technology, pp. 213-229, (1986)
  • [7] Carrazza, Tysoe, Heinemann, Somorjai, Gasification of graphite with steam below 900 K catalyzed by a mixture of potassium hydroxide and transition metal oxide, J. Catal., 96, pp. 234-241, (1985)
  • [8] Carrazza, Chludinsky, Heinemann, Somorjai, Baker, Controlled atmosphere electron microscopy study of the gasification of graphite by water, hydrogen and oxygen catalyzed by a nickel/potassium mixture, J. Catal., 110, pp. 76-81, (1988)
  • [9] Pereira, Csencsits, Somorjai, Heinemann, Steam gasification of graphite and chars at temperature < 1000 K over potassium–calcium-oxide catalysts, J. Catal., 123, pp. 463-476, (1990)
  • [10] Adler, Huttinger, Mixtures of potassium sulfate and iron sulfate as catalysts for water vapor gasification of carbon: 1. Kinetic studies, Fuel, 63, pp. 1393-1403, (1984)