Ion-exchange membranes for bulk separation of H{sub 2}S and CO{sub 2}

Technical Report · Tue Sep 01 04:00:00 EDT 1992

DOI:https://doi.org/10.2172/10175096· OSTI ID:10175096

Pellegrino, J J; Giarratano, P

The overall goal of this program is to investigate the use of ion exchange membranes in the removal of acid gases during processing of natural gas or during production of H{sub 2} from synthesis gas. As part of this goal we are running a field test of candidate membranes on a natural gas stream to obtain extended performance data on acid gas transport Additionally we are working on strategies for increasing the productivity and lifetime of these types of membranes. The specific objectives include: Evaluate candidate membranes, carriers, solvents, treatments and the effects of process conditions for separation of the acid gases C0{sub 2} and H{sub 2}S from H{sub 2}, CO and CE{sub 4}. Develop mathematical models to guide experimental work and for interpretation of results. Construct and operate an extended-use test facility to evaluate the long term stability and productivity of various membrane forms relative to acid gases. Develop thin film composite membranes as a possible route to higher productivity and lower cost membranes. Develop preliminary process design and economic analysis for the use of these membranes in gas cleanup. Performance testing of the following membranes are discussed; polyperfluorosulfonic acid (PFSA) membranes inbibed with various solvent and chemical carriers; PFSA membranes subjected to solvent-swelling heat treatment (gel treatment); and composite membranes, microporous tefflon coated with PFSA solution.

• Research Organization: National Inst. of Standards and Technology (CSTL), Boulder, CO (United States). Chemical Engineering Div.
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AI21-86MC23120
• OSTI ID: 10175096
• Report Number(s): DOE/MC/23120--92/C0044; CONF-920748--13; ON: DE92019959
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402
03 NATURAL GAS
030300
08 HYDROGEN
080107
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105
AMINES
CARBON DIOXIDE
COAL GASIFICATION
COMPOSITE MATERIALS
DRILLING, PRODUCTION, AND PROCESSING
EXPERIMENTAL DATA
HEAT TREATMENTS
HYDROGEN
HYDROGEN SULFIDES
ION EXCHANGE MATERIALS
MATERIALS TESTING
MEMBRANES
METHANE
ORGANIC POLYMERS
ORGANIC SOLVENTS
PERFORMANCE TESTING
PERMEABILITY
PURIFICATION AND UPGRADING
SEPARATION PROCEDURES
SEPARATION PROCESSES
TIME DEPENDENCE