Membrane applications to coal conversion processes. Final report, June 1975--September 1976. [Cellulose acetate, polysulfone]
A survey of coal conversion processes was conducted to determine the appropriate application of membrane gas separation methods. This study included a review of gas stream compositions, pressures and temperatures, the application of membrane treatment to these gas streams, and comparisons with other commercial separation processes that may be comparable to membrane separation. It was determined that the SYNTHOIL, HYDRANE and PATGAS processes would offer the most potential for application of membrane systems. Characterization of currently available cellulose acetate membranes included determination of permeation rates and calculation of separation efficiencies for the gases of interest as a function of pressure, temperature, time, and moisture content. Several 2-in. dia. spiral modules were fabricated with cellulose acetate membranes and tested up to a pressure of 750 psig. Some of these modules performed satisfactorily and failure modes were determined for the others. An intensive polysulfone membrane development effort was conducted. The approach consisted of varying solvent ratios, drying times and gelation media at several polymer concentrations. The resulting membranes were evaluated from gas permeation rate measurements. A dimer-free polysulfone was obtained that improved membrane properties considerably, indicating a great potential for the development of this polymer for an improved gas separation membrane. A cost study for membrane gas separation applied to coal gasification processes was conducted.
- Research Organization:
- Envirogenics Systems Co., El Monte, Calif. (USA)
- DOE Contract Number:
- EX-76-C-01-2000
- OSTI ID:
- 5084660
- Report Number(s):
- FE-2000-4
- Resource Relation:
- Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
Similar Records
Membrane applications to coal conversion processes. Quarterly report, December 5, 1975--March 4, 1976. [Cellulose acetate, polysulfone]
Membrane applications to coal conversion processes. Quarterly report, June 5--September 4, 1975. [Cellulose acetate butyrate; polysulfone; 14 refs]
Related Subjects
08 HYDROGEN
COAL GAS
SEPARATION PROCESSES
GASES
HYDROGEN PRODUCTION
COST
MEMBRANES
FABRICATION
PERMEABILITY
ACETATES
CARBON MONOXIDE
CELLULOSE ESTERS
COAL GASIFICATION
COMPARATIVE EVALUATIONS
ECONOMICS
HYDRANE PROCESS
HYDROGEN
METHANE
PATGAS PROCESS
PLASTICIZERS
SULFONES
SYNTHOIL PROCESS
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CARBOXYLIC ACID SALTS
CHALCOGENIDES
COAL LIQUEFACTION
CRYOGENIC FLUIDS
ELEMENTS
ESTERS
FLUIDS
GASIFICATION
HYDROCARBONS
LIQUEFACTION
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SNG PROCESSES
010404* - Coal
Lignite
& Peat- Gasification
080107 - Hydrogen- Production- Coal Gasification