METHOD OF REDUCING FUMES FROM A VESSEL OF MOLTEN ASPHALT

In a method of melting asphalt (24) in a vessel (10), the molten asphalt normally emitting fumes, 0.2 weight percent to 6 weight percent of a polymer is added to the asphalt to reduce the visual opacity of the fumes by at leas t 25% over the same asphalt without the polymer. In another embodiment, t...

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Bibliographische Detailangaben
Hauptverfasser:	MARZARI, JORGE A, TRUMBORE, DAVID C, FRANZEN, MICHAEL R, VERMILION, DONN R, JANICKI, RICHARD T, KEATING, JAY W
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING FUELS HANDLING THIN OR FILAMENTARY MATERIAL LUBRICANTS MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PACKAGES PACKAGING ELEMENTS PACKING PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PYROLIGNEOUS ACID STORING TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING UNPACKING WORKING-UP PITCH, ASPHALT, BITUMEN, TAR
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Beschreibung
Zusammenfassung:	In a method of melting asphalt (24) in a vessel (10), the molten asphalt normally emitting fumes, 0.2 weight percent to 6 weight percent of a polymer is added to the asphalt to reduce the visual opacity of the fumes by at leas t 25% over the same asphalt without the polymer. In another embodiment, the total emissions of benzene soluble suspended particulates is reduced by at least 15% over the same asphalt without the polymer. Preferably, the added polymer has a melt flow index of from 15 grams/10 minutes to 95 grams/10 minutes, and the added polymer reduces the visual opacity of the fumes by forming a skim on the upper surface of the molten asphalt.