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...

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Bibliographic Details
Main Authors MIYAKAWA K,JA, KISHI C,JA, TATSUTA M,JA, HATAKEYAMA Y,JA, NAGO M,JA, KIBUISHI K,JA
Format Patent
LanguageEnglish
Published 27.11.1973
Subjects
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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Summary: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.
Bibliography:Application Number: USD3775289