Purification of Hydrogen by Pressure Swing Adsorption

Autor: Shivaji Sircar, Timothy Christopher Golden
Rok vydání: 2000
Předmět:
Zdroj: Separation Science and Technology. 35:667-687
ISSN: 1520-5754
0149-6395
DOI: 10.1081/ss-100100183
Popis: Pressure swing adsorption (PSA) processes are used for the production of high purity hydrogen from steam methane reforming off-gas (SMROG) and refinery off-gases (ROG). A variety of commercial PSA processes for the production of H2 with or without a by-product (CO2 from SMROG), as well as PSA processes for direct production of ammonia synthesis gas (from SMROG), are reviewed. The equilibrium ad(de)sorption characteristics of the components of SMROG and ROG feed gas on an activated carbon, a zeolite, and a silica gel are reported, and the criteria for adsorbent selection in these PSA processes are discussed. Recent ideas to increase the H2 recovery from these PSA processes by integrating them with selective surface flow membranes or other PSA units are reviewed.
Databáze: OpenAIRE