METHOD FOR PRODUCING BITUMINOUS SUBSTANCE SUCH AS A COAL TAR PITCH

METHOD FOR PRODUCING BITUMINOUS SUBSTANCE SUCH AS A COAL TAR PITCH

A method for producing bituminous substance such as coal tar pitch which comprises adding sulfuric acid to coal tar produced by a high temperature dry distillation of coal and a bituminous substance produced from the coal tar, then adding petroleum heavy oil to the mixture to precipitate and separat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MIYAKAWA K,JA, KISHI C,JA, TATSUTA M,JA, HATAKEYAMA Y,JA, NAGO M,JA, KIBUISHI K,JA
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FUELS
LUBRICANTS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PYROLIGNEOUS ACID
TECHNICAL GASES CONTAINING CARBON MONOXIDE
WORKING-UP PITCH, ASPHALT, BITUMEN, TAR
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Beschreibung
Zusammenfassung:A method for producing bituminous substance such as coal tar pitch which comprises adding sulfuric acid to coal tar produced by a high temperature dry distillation of coal and a bituminous substance produced from the coal tar, then adding petroleum heavy oil to the mixture to precipitate and separate pitch component.