Development of Hollow Fiber Catalytic Membrane Reactors for High Temperature Gas Cleanup. Final Report, September 1989--March 1994

Download or read book Development of Hollow Fiber Catalytic Membrane Reactors for High Temperature Gas Cleanup. Final Report, September 1989--March 1994 written by and published by . This book was released on 1994 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project was to develop economically and technically viable catalytic membrane reactors for high temperature, high pressure gaseous contaminant control in Integrated Gasification Combined Cycle (IGCC) systems. These catalytic membrane reactors decompose H2S and separate the reaction products. The reactors were designed to operate in the hostile process environment of the IGCC systems, and at temperatures ranging from 500 to 1000°C. Severe conditions encountered in the IGCC process (e.g., 900°C, containing of H2S, CO2 and H2O) make it impossible to use polymeric membranes in the process. A list of inorganic membranes that can be employed in the membrane reactor includes Pd metallic membranes, molecular-sieve glass membranes (PPG Industries), porous Vycor glass membranes and porous sol-gel derived membranes such as alumina, zirconia. Alumina and zirconia membranes, however, cannot withstand for a long time at high temperatures in the presence of water vapors. Palladium membranes are a very promising class of inorganic membranes for gas separations that is currently under development. In this project two different types of membranes were used in the design of the membrane reactor -- molecular-sieve glass membrane and Vycor glass porous membrane.