COAL TAR AND HYDROCARBON MIXTURE PITCH AND THE PREPARATION AND USE THEREOF

A method of making a high softening point coal tar pitch using high efficien cy evaporative distillation, as well as the uses and applications of such pitch . According to the method, a feed coal tar pitch having a softening point in t he range of 70~C to 160~C is fed into a processing vessel wherei...

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Bibliographische Detailangaben
Hauptverfasser:	SNYDER, DAVID R, GOLUBIC, THOMAS A, SAVER, WILLIAM E, WOMBLES, ROBERT H, KRUPINSKI, KENNETH C
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ARTIFICIAL STONE BLASTING BRAKES CEMENTS CERAMICS CHEMICAL SURFACE TREATMENT CHEMISTRY CLUTCHES COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE COUPLINGS FOR TRANSMITTING ROTATION DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINEERING ELEMENTS AND UNITS FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL PROCESSES OF COMPOUNDING HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INORGANIC CHEMISTRY LIGHTING LIME, MAGNESIA LIQUEFIED PETROLEUM GAS LUBRICANTS MECHANICAL ENGINEERING METALLURGY NATURAL GAS NON-METALLIC ELEMENTS ORGANIC MACROMOLECULAR COMPOUNDS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PYROLIGNEOUS ACID REFRACTORIES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SLAG SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF NATURAL STONE WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP WORKING-UP PITCH, ASPHALT, BITUMEN, TAR
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Beschreibung
Zusammenfassung:	A method of making a high softening point coal tar pitch using high efficien cy evaporative distillation, as well as the uses and applications of such pitch . According to the method, a feed coal tar pitch having a softening point in t he range of 70~C to 160~C is fed into a processing vessel wherein the processin g vessel is heated to a temperature in the range of 300~C to 450~C and wherein a pressure inside the processing vessel is in the range of 5 Torr or less. An output coal tar pitch is withdrawn from the processing vessel. The output co al tar pitch has a softening point in the range of 140~C to 300~C and has less than 5% mesophase.