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Separation of a five-component gas mixture by pressure swing adsorption

Journal Article · · Sep. Sci. Technol.; (United States)
;
Bulk separation of a five-component mixture simulating coal gasification products was performed by pressure swing adsorption (PSA) using activated carbon. The PSA cycle consisted of four commercially used steps: (I) pressurization with H/sub 2/, (II) adsorption, (III) blowdown, and (IV) evacuation. Using this cycle, four products were obtained with a single PSA unit: H/sub 2/ (over 99.7% purity), CO, CH/sub 4/, and acid gas (CO/sub 2/ + H/sub 2/S). The first three products contained less than 0.001% H/sub 2/S, and the acid gas was suitable for sulfur recovery. A mathematical model incorporating equilibrium adsorption of mixture and mass transfer resistance (of CO/sub 2/) was found capable of simulating all steps of the PSA cycle. The model simulation results were in fair agreement with the experimental data. A fundamental understanding of the dynamics of the cyclic process was gained through the model. 20 references, 9 figures, 7 tables.
Research Organization:
State Univ. of New York, Buffalo
DOE Contract Number:
AC21-83MC20183
OSTI ID:
5828729
Journal Information:
Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 20:9-10; ISSN SSTED
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
ADSORPTION HEAT
ADSORPTION ISOTHERMS
ALKANES
CARBON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COAL GAS
COAL GASIFICATION
DATA
ELEMENTS
ENERGY TRANSFER
ENTHALPY
EXPERIMENTAL DATA
FLUIDS
GASES
GASIFICATION
HEAT TRANSFER
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
ISOTHERMS
MASS TRANSFER
MATHEMATICAL MODELS
METHANE
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTIAL PRESSURE
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
PRESSURIZING
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
THERMODYNAMICS