Method for in-situ repair of solvent dewaxing filter cloths

A method for the in-situ repair of damaged filter cloths (having tears or holes therein) in solvent dewaxing filters comprises thoroughly washing the filter cloth in the area of the damage to remove wax and oil, applying a quantity of solvent resistant adhesive to the damaged area such that the area...

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Bibliographische Detailangaben
Hauptverfasser:	BRISTOW, DUNCAN J, EWENER, PATRICK C, ARMSTRONG, SCOTT W, DALLAIRE, LOUIS C, THOMPSON, JOHN A
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CRACKING HYDROCARBON OILS FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA SEPARATION TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORTING
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Beschreibung
Zusammenfassung:	A method for the in-situ repair of damaged filter cloths (having tears or holes therein) in solvent dewaxing filters comprises thoroughly washing the filter cloth in the area of the damage to remove wax and oil, applying a quantity of solvent resistant adhesive to the damaged area such that the area of treatment extends beyond the hole or tear and adhesive overlays onto undamaged cloth, optionally (i) inserting pre-cut portions of filter cloth into the damage so as to completely fill the hole or tear but not create a bulge or cloth build up in the face of the filter cloth or (ii) overlaying patches of filter cloth on the damaged area and, finally and optimally, applying a final coating of adhesive over the repaired area.