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Title: Alternative process schemes for coal conversion. Progress report No. 1, October 1, 1978--January 31, 1979

Abstract

On the basis of simple, first approximation calculations, it has been shown that catalytic gasification and hydrogasification are inherently superior to conventional gasification with respect to carbon utilization and thermal efficiency. However, most processes which are directed toward the production of substitute natural gas (SNG) by direct combination of coal with steam at low temperatures (catalytic processes) or with hydrogen (hydrogasification) will require a step for separation of product SNG from a recycle stream. The success or falure of the process could well depend upon the economics of this separation scheme. The energetics for the separation of mixtures of ideal gases has been considered in some detail. Minimum energies for complete separation of representative effluent mixtures have been calculated as well as energies for separation into product and recycle streams. The gas mixtures include binary systems of H/sub 2/ and CH/sub 4/ and ternary mixtures of H/sub 2/, CH/sub 4/, and CO. A brief summary of a number of different real separation schemes has also been included. We have arbitrarily divided these into five categories: liquefaction, absorption, adsorption, chemical, and diffusional methods. These separation methods will be screened and the more promising methods examined in more detail in later reports.more » Finally, a brief mention of alternative coal conversion processes concludes this report.« less

Authors:
Publication Date:
Research Org.:
Brookhaven National Lab., Upton, NY (USA)
OSTI Identifier:
6020287
Report Number(s):
BNL-51011
DOE Contract Number:  
EY-76-C-02-0016
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL GASIFICATION; COMPARATIVE EVALUATIONS; THERMAL EFFICIENCY; FUEL GAS; SEPARATION PROCESSES; ADSORPTION; CARBON DIOXIDE ACCEPTOR PROCESS; CARBON MONOXIDE; CHEMISTRY; DIFFUSION; EXXON GASIFICATION PROCESS; FLASH HYDROPYROLYSIS PROCESS; FLOWSHEETS; HIGH BTU GAS; HYDRANE PROCESS; HYDROGEN; LIQUEFACTION; METHANE; ALKANES; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; COAL LIQUEFACTION; CRYOGENIC FLUIDS; DIAGRAMS; EFFICIENCY; ELEMENTS; ENERGY SOURCES; FLUIDS; FUELS; GAS FUELS; GASES; GASIFICATION; HYDROCARBONS; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SNG PROCESSES; SORPTION; THERMOCHEMICAL PROCESSES; 010404* - Coal, Lignite, & Peat- Gasification

Citation Formats

Sansone, M.J. Alternative process schemes for coal conversion. Progress report No. 1, October 1, 1978--January 31, 1979. United States: N. p., 1979. Web. doi:10.2172/6020287.
Sansone, M.J. Alternative process schemes for coal conversion. Progress report No. 1, October 1, 1978--January 31, 1979. United States. doi:10.2172/6020287.
Sansone, M.J. Thu . "Alternative process schemes for coal conversion. Progress report No. 1, October 1, 1978--January 31, 1979". United States. doi:10.2172/6020287. https://www.osti.gov/servlets/purl/6020287.
@article{osti_6020287,
title = {Alternative process schemes for coal conversion. Progress report No. 1, October 1, 1978--January 31, 1979},
author = {Sansone, M.J.},
abstractNote = {On the basis of simple, first approximation calculations, it has been shown that catalytic gasification and hydrogasification are inherently superior to conventional gasification with respect to carbon utilization and thermal efficiency. However, most processes which are directed toward the production of substitute natural gas (SNG) by direct combination of coal with steam at low temperatures (catalytic processes) or with hydrogen (hydrogasification) will require a step for separation of product SNG from a recycle stream. The success or falure of the process could well depend upon the economics of this separation scheme. The energetics for the separation of mixtures of ideal gases has been considered in some detail. Minimum energies for complete separation of representative effluent mixtures have been calculated as well as energies for separation into product and recycle streams. The gas mixtures include binary systems of H/sub 2/ and CH/sub 4/ and ternary mixtures of H/sub 2/, CH/sub 4/, and CO. A brief summary of a number of different real separation schemes has also been included. We have arbitrarily divided these into five categories: liquefaction, absorption, adsorption, chemical, and diffusional methods. These separation methods will be screened and the more promising methods examined in more detail in later reports. Finally, a brief mention of alternative coal conversion processes concludes this report.},
doi = {10.2172/6020287},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {2}
}