Share

THE DEVELOPMENT OF CRYOGENIC HYDROGEN RECOVERY.

Author(s) : RUHEMANN M.

Type of article: Article

Summary

OIL REFINERIES, PETROCHEMICAL WORKS AND FERTILISER PLANTS ARE TYPICAL EXAMPLES OF INDUSTRIAL PROCESSES WHICH GENERATE OFFGASES CONTAINING HYDROGEN IN CONCENTRATIONS VARYING FROM 30 TO 70 MOL.%. SINCE THE RECENT OIL CRISIS, INDUSTRY HAS BEEN CONTEMPLATING ECONOMICAL USE OF THIS HYDROGEN, AND A NUMBER OF PROCESSES HAVE BEEN DEVELOPED FOR THE RECOVERY OF HYDROGEN FROM GAS MIXTURES OF VARIOUS TYPES. MOST OF THESE PROCESSES MAKE USE OF THE LOW CRITICAL TEMPERATURE OF HYDROGEN TO LIQUEFY ALL ASSOCIATED COMPONENTS, EXCEPT HYDROGEN. AFTER SOME THERMODYNAMIC CONSIDERATIONS, TWO TYPES OF HYDROGEN RECOVERY PLANTS ARE STUDIED IN DETAILS: THOSE DEALING WITH OIL REFINERY GASES, IN WHICH HYDROGEN IS ASSOCIATED WITH LIGHT HYDROCARBONS (REFRIGERATION IS RELIED ONTHE JOULE-THOMSON EFFECT OF THE HYDROCARBONS) AND THOSE TREATING PURGE GASES FROM AMMONIA SYNTHESIS PLANTS, IN WHICH HYDROGEN IS MIXED WITH NITROGEN, METHANE AND ARGON (ADDITIONAL EXTERNAL REFRIGERATION IS REQUIRED). J. V.

Details

  • Original title: THE DEVELOPMENT OF CRYOGENIC HYDROGEN RECOVERY.
  • Record ID : 1982-0272
  • Languages: English
  • Source: Indian J. Cryog. - vol. 4 - n. 3
  • Publication date: 1979
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles in this issue (2)
See the source

Indexing