COAL HYDROGENATION STUDY, FINAL REPORT

THE EFFECT WAS EVALUATED OF THE CONCENTRATION OF FERROUS ION CATALYST ON THE YIELDS AND PROPERTIES OF HYDROGENATED COAL BITUMEN. TWO COALS, ELKO AND BUCKEYE, WERE IMPREGNATED WITH UP TO 2.0 WEIGHT PERCENT FERROUS ION AS HYDRATED FERROUS SULPHATE. THE CATALYST-IMPREGNATED ELKO COAL WAS THEN PROCESSED IN EITHER BENZENE, TETRALIN OR A 230 - 315 C COAL TAR SOLVENT. THE EXPERIMENTAL PROCEDURES AND ANALYTIC TECHNIQUES HAVE PREVIOUSLY BEEN REPORTED. RESULTS INDICATE THAT HYDROGENATED COAL BITUMEN CAN BE PRODUCED IN GOOD YIELD FROM COAL AND WILL HAVE PROPERTIES INTERMEDIATE TO THOSE OF COMPARABLE PENETRATION ASPHALTS AND ROAD TARS. INCREASING IMPREGNATED FERROUS ION CONCENTRATION ON COAL LOWERS THE MOLECULAR WEIGHT OF THE PRODUCTS FROM A LIQUID PHASE COAL HYDROGENATION PROCESS. IN NO CASE WAS THE AMOUNT OF BITUMEN PLUS OILY RESIDUE LESS THAN 40 WEIGHT PERCENT OF THE MOISTURE-ASH FREE COAL CHARGED TO THE REACTOR. THE RELATIVELY LARGE FRACTION OF BITUMEN PRODUCED IN THIS WORK INDICATES THAT THERE IS A HIGH PROBABILITY THAT SOME LARGE SCALE COAL CONVERSION PROCESSES MAY FIND IT ECONOMICALLY ATTRACTIVE TO PRODUCE A ROAD BINDER FOR THE HIGHWAY INDUSTRY. FERROUS ION CATALYST APPEARS TO HAVE A GREATER EFFECT ON BENZENE-INSOLUBLE CONVERSION AND ON BITUMEN YIELD WHEN BENZENE AND COAL TAR ARE USED AS SOLVENTS, THAN IT DOES WHEN TETRALIN IS USED. THERE IS NO PRONOUNCED EFFECT OF FERROUS ION CATALYST CONCENTRATION ON THE QUALITY OF THE BITUMEN. HOWEVER, THE COAL AND SOLVENT USED AS RAW MATERIALS SEEM TO HAVE A LARGE EFFECT ON BITUMEN QUALITY. THE REASONS FOR THE DIFFERENCE IN QUALITY OF THE HYDROGENATED COAL BITUMENS PRODUCED USING DIFFERENT STARTING MATERIALS IS NOT CLEAR.

  • Supplemental Notes:
    • Hpr-1/3/, BPR NO 7, STATE NO 507
  • Corporate Authors:

    University of Wyoming, Laramie

    Wyoming Survey and Analysis Center, 710 Garfield
    Laramie, WY  USA  82070

    Wyoming State Highway Department

    ,    

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Authors:
    • Silver, H F
  • Publication Date: 1967-12

Subject/Index Terms

Filing Info

  • Accession Number: 00210390
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Apr 12 1994 12:00AM