Plasma Gasification of Coal

The distinguishing characteristic of non-plasma and plasma methods of gasification is that the products are different the non-plasma conventional carbonization process yields gas and tar plasma processes yield gas and soot. Based on the representative data collated for hvab coal in Table 17 it is inferred that the gas from carbonization is richer in methane, the chief component of natural gas and the preferred product the gas from plasma is richer in acetylene. In most of the plasma methods collated in Table 17 the gas temperatures were 1300 K or more and any methane formed would readily decompose to yield acetylene. Clearly, in-so-far as the plasma formation of methane is concerned the temperature region of 700—1000 K needs to be investigated. Her 60 Hz discharges, with or without electrodes, in reactors heated to the desired temperature may be advantageous. 

With respect to the different coal ranks the only systematic data on gasification which is available at present are for microwave discharges. This data given in Table 18 show that appreciable conversions to gaseous hydrocarbons are found only with hvab 

Method Gas composition, mole % h2 ch4 c2h2 CO Total gases, wt % coal Ref. 

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Vdovenko, M.I., Ibraev, Sh.Sh., Messerle, VE. (1987), Plasma Gasification of Coals with Utilization of Mineral Fraction, in Plasma Gasification and Pyrolysis of Low Quality Coals, p. 59, Energy Institute, ENIN, Moscow. 

Direct Gasification of Coal with Production of Syngas (H2-CO) in Electric Arc Plasma of Water Vapor... 

Gasification of Coal by Water Vapor in Thermal Plasma Jet. Prove that thermal plasma treatment of coal with water vapor provides not only gasification of the volatile compounds of the coal but also gasification of coke. Use the material balance data shown in Table 10-12. 

Krukovsky, VK., Kolobova, E.A. (1981), Gasification of Coal in Water Vapor Plasma, in Theory and Technology of Liquid, Gaseous and Synthetic Fuels, p. 71, IGI, Moscow. 

Coal Gasification by H2O and Syngas Production in Thermal Plasma Jets Application of Steam Plasma Jets and Plasma Jets of Other Gases... 

Battaerd, HA. and Evans, D.G. (1979) An alternative representation of coal composition data. Fuel, 58 (2), 105-108. Mountouris, A., Voutsas, E., and Tassios, D. (2006) Solid waste plasma gasification equilibrium model development and exergy analysis. Energy Conversion and Management, 47 (13-14),... 

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