Manufacture of hydrogen from coal. [Koppers-Totzek and U-Gas processes]
As part of a study for the conversion of coal to fluid fuels, we have developed three process designs for the conversion of Montana subbituminous coal to hydrogen based on three different gasifier technologies: Koppers-Totzek suspension gasification, U-GAS fluidized-bed gasification, and Fluidized Steam-Iron Process. For comparison with methane from coal, a fourth design, based on the HYGAS Process has been prepared. Nominal plant capacities are 250 billion Btu/day of product gas. Overall plant efficiencies for conversion of coal to major gaseous products plus by-products are: Koppers-Totzek, 57.0%; U-GAS, 66.4%; Steam-Iron, 62.6% (includes 18% by-product electricity); HYGAS, 74.0%. Product liquefaction requirements are presented. Capital and operating costs (mid-1974) are presented for U-GAS and HYGAS. With coal at $0.30/million Btu, prices for hydrogen and methane are $2.17 and $1.77/million Btu. Methane is more attractive in both efficiency and cost.
- Research Organization:
- Society of Automotive Engineers, Inc., New York (USA)
- OSTI ID:
- 7123522
- Report Number(s):
- CONF-7511105-1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010404 -- Coal
Lignite
& Peat-- Gasification
08 HYDROGEN
080107* -- Hydrogen-- Production-- Coal Gasification
080108 -- Hydrogen-- Production-- Steam-Iron Process
CHEMICAL REACTIONS
COAL GASIFICATION
COST
ECONOMICS
EFFICIENCY
GASIFICATION
HYDROGEN PRODUCTION
HYGAS PROCESS
KOPPERS-TOTZEK PROCESS
SNG PROCESSES
STEAM-IRON PROCESS
THERMOCHEMICAL PROCESSES
U-GAS PROCESS