Low cost hydrogen/novel membrane technology for hydrogen separation from synthesis gas

Technical Report · Sat Feb 01 00:00:00 EST 1986

DOI:https://doi.org/10.2172/5045888· OSTI ID:5045888

To make the coal-to-hydrogen route economically attractive, improvements are being sought in each step of the process: coal gasification, water-carbon monoxide shift reaction, and hydrogen separation. This report addresses the use of membranes in the hydrogen separation step. The separation of hydrogen from synthesis gas is a major cost element in the manufacture of hydrogen from coal. Separation by membranes is an attractive, new, and still largely unexplored approach to the problem. Membrane processes are inherently simple and efficient and often have lower capital and operating costs than conventional processes. In this report current ad future trends in hydrogen production and use are first summarized. Methods of producing hydrogen from coal are then discussed, with particular emphasis on the Texaco entrained flow gasifier and on current methods of separating hydrogen from this gas stream. The potential for membrane separations in the process is then examined. In particular, the use of membranes for H{sub 2}/CO{sub 2}, H{sub 2}/CO, and H{sub 2}/N{sub 2} separations is discussed. 43 refs., 14 figs., 6 tabs.

• Research Organization: Membrane Technology and Research, Inc., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC21-85MC22130
• OSTI ID: 5045888
• Report Number(s): DOE/MC/22130-T11; ON: DE92017783
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
01 COAL, LIGNITE, AND PEAT
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON DIOXIDE
SEPARATION PROCESSES
HYDROGEN
MEMBRANES
PERMEABILITY
NITROGEN
SYNTHESIS GAS
EXPERIMENTAL DATA
HYDROGEN PRODUCTION
TEXACO GASIFICATION PROCESS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COAL GASIFICATION
DATA
ELEMENTS
FLUIDS
GASES
GASIFICATION
INFORMATION
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
THERMOCHEMICAL PROCESSES
080107* - Hydrogen- Production- Coal Gasification
010404 - Coal
Lignite
& Peat- Gasification
400105 - Separation Procedures