CCS and Power Systems

Advanced Energy Systems - Gasification Systems


Advanced Hydrogen Transport Membranes for Coal Gasification


Performer: Praxair, Inc.

Project No: FE0004908


Project Description

Praxair is conducting research to develop hydrogen transport membrane (HTM) technology to separate carbon dioxide (CO2) and hydrogen (H2) in coal-derived syngas for IGCC applications. The project team has fabricated palladium based membranes and measured hydrogen fluxes as a function of pressure, temperature, and membrane preparation conditions.

Membranes are a commercially-available technology in the chemical industry for CO2 removal and H2 purification. There is, however, no commercial application of membrane processes that aims at CO2 capture for IGCC syngas. Due to the modular nature of the membrane process, the design does not exhibit economy of scale—the cost of the system will increase linearly as the plant system scale increases making the use of commercially available membranes, for an IGCC power plant, cost prohibitive. For a membrane process to be a viable CO2 capture technology for IGCC applications, a better overall performance is required, including higher permeability, higher selectivity, and lower membrane cost.

Membranes shown (from top to bottom): ceramic support, activated and coated with palladium oxide, plated with palladium, and plated with palladium and gold. 
Membranes shown (from top to bottom): ceramic support, activated and coated with palladium oxide, plated with palladium, and plated with palladium and gold.

Project Details