Coal Carbonization Studies. Altering Composition and Yield of Volatile Products by Increasing the Free Space Above the Charge

Details

• Personal Author:
  Ortuglio C ; Walters JG ; Wolfson DE
• Description:
  The effect of cracking by increasing the free space above the charge on the composition and yields of the volatile products from carbonization of Pittsburgh-bed coal and one industrially used blend from eastern United States and one from western United States was investigated with the bm-aga carbonization apparatus. Increasing the free space above the charge from 1 inch to 3 inches, to 6 inches, and to 9 inches resulted in lower tar yields and increased gas and oil yields. Anthracene and naphthalene yields were increased; quinoline and benzene insoluble fractions of both the tar and pitch increased considerably with increased free space, although the carbon content of the tars and pitches increased only slightly. Increased cracking, occasioned by the increase in free space, resulted in a decrease in the yields of tar acids, tar bases, neutral oils, olefins, aromatics, and paraffins and naphthenes. Gas composition was relatively constant; hydrogen and methane tended to increase and ethane to decrease. Results of the investigation are being used to design a unit to upgrade the volatile products of carbonization by cracking the hot products as they leave the carbonization chamber. [Description provided by NIOSH]
• Subjects:
  Benzene Coal Coal Mining Coal Tar Hydrocarbons Methane Mining Naphthalenes Occupational Health Polycyclic Aromatic Hydrocarbons Safety

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• Keywords:
  Mining-industry; Coal-mining; Volatiles; Gases; Oils; Tars; Anthracenes; Naphthalenes; Quinolines; Benzenes; Carbon-compounds; Coal-tar-pitch; Olefins; Aromatic-hydrocarbons; Hydrocarbons; Paraffin-compounds; Paraffins; Methanes
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Conference Publications ; Case Report
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PERC - Pittsburgh Energy Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-11
• NIOSHTIC Number:
  nn:10009040
• NTIS Accession Number:
  PB-192304
• Citation:
  NTIS: PB 192 304, 1970; :1-11
• CAS Registry Number:
  Anthracene (CAS RN 120-12-7) ; Benzene (CAS RN 71-43-2) ; Methane (CAS RN 74-82-8) ; Naphthalene (CAS RN 91-20-3) ; Quinoline (CAS RN 91-22-5)
• Federal Fiscal Year:
  1970
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 192 304
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:730f37a8e75ba51378d74c60733b4c67307437eb238ac9bd150b8d62be85eaa1df1999685154e3fb8e95c64d589e697974e82502798b28db4f0a513d6751e56d
• Download URL:
  https://stacks.cdc.gov/view/cdc/233905/cdc_233905_DS1.pdf
• File Type:
  [PDF - 4.51 MB ]