Bulk separation and purification of CH sub 4 /CO sub 2 mixtures on 4A/13X molecular sieves by using pressure swing adsorption

Journal Article · · Separation Science and Technology; (United States)

OSTI ID:5517618

Vyas, S N; Patwardhan, S R; Gupta, I; Burra, V ^[1]

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1. Indian Inst. of Tech., Bombay (India)

Results of bulk gas separation and purification of a CH{sub 4}/CO{sub 2} mixture by pressure swing adsorption (PSA) are reported. Bulk gas separation and purification of CH{sub 4}/CO{sub 2} mixture have direct application in landfill gases and tertiary oil recovery and effluent separations. ZMS-13X/4A with calculated kinetic selectivities equal to 0.604 and 0.601, respectively, were used as sorbents. The step times corresponding to various flow rates and compositions were chosen to allow sorption of CO{sub 2} but preclude penetration of CH{sub 4} into the micropores. By using a simulated biogas mixture (66% CH{sub 4} and 34% Co{sub 2}) as a feed, the results for bulk gas separation for a PSA cycle between 1.2-36.0 P{sub H}/P{sub L} ratios over ZMS-13X adsorbent was 95% or more CH{sub 4} in the raffinate, whereas with a 10/90 CH{sub 4}/CO{sub 2} feed, purification over ZMS-4A at P{sub H}/P{sub L} ratios of 10-304 gave 85-90% CH{sub 4} at 900 and 1,800 ml/min flow rates.

• OSTI ID: 5517618
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 26:10-11; ISSN SSTED; ISSN 0149-6395
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300 -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
09 BIOMASS FUELS
090900 -- Biomass Fuels-- Processing-- (1990-)
ADSORBENTS
ADSORPTION
ADSORPTION ISOTHERMS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON DIOXIDE INJECTION
CARBON OXIDES
CHALCOGENIDES
DATA
DEGASSING
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
EXPERIMENTAL DATA
FLOW RATE
FLUID FLOW
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FLOW
GAS FUELS
GASES
INFORMATION
ISOTHERMS
MANAGEMENT
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
MOLECULAR SIEVES
NATURAL GAS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
PETROLEUM
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
PURIFICATION
QUANTITY RATIO
RECOVERY
SANITARY LANDFILLS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
WASTE DISPOSAL
WASTE MANAGEMENT