Closed Sabatier Oxygen-Reclamation System

A Closed Sabatier System for oxygen recovery from carbon dioxide was designed. Design analysis was based on a three-man engineering prototype that consists of the following principal subsystems: a water-vapor electrolysis/Sabatier unit, an electrochemical hydrogen-stripper/Sabatier unit, a continuou...

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Bibliographic Details
Main Authors: Kim,Byung C, Clifford,John E
Format: Report
Language:English
Subjects:
CARBON DIOXIDE
CATALYSTS
CHEMICAL REACTORS
COMPUTER PROGRAMMING
CONFINED ENVIRONMENTS
CONTROL
DECOMPOSITION
DESIGN
ELECTROLYSIS
FLUID FLOW
GAS FLOW
HEAT TRANSFER
HYDROGEN
Industrial Chemistry and Chemical Processing
LIFE SUPPORT
Life Support Systems
METHANE
OXYGEN
PALLADIUM ALLOYS
RECLAMATION
REDUCTION(CHEMISTRY)
SILVER ALLOYS
SPACECRAFT CABINS
WATER VAPOR
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Description
Summary:A Closed Sabatier System for oxygen recovery from carbon dioxide was designed. Design analysis was based on a three-man engineering prototype that consists of the following principal subsystems: a water-vapor electrolysis/Sabatier unit, an electrochemical hydrogen-stripper/Sabatier unit, a continuous catalytic methane decomposition unit, and a water-vapor transfer unit. The electrochemical cell designs utilize Pd-25Ag hydrogen-diffusion electrodes in tubular form containing Sabatier catalyst for integrated system operation. All components are designed for gravity-independent operation with a minimum of critical rotating parts. The electrochemical units operate at about 200C, and the methane decomposition unit at 850C. System weight is about 90 kg with a power requirement of less than 1 kw for designed operation with 99 percent recovery of the oxygen value in the carbon dioxide feed. (Author) Joint NASA/USAF Study.