The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 1982
Filed:
Apr. 08, 1981
Kathy A Knitter, Morristown, NJ (US);
Jose L Villa, Bridgewater, NJ (US);
Diamond Shamrock Corporation, Dallas, TX (US);
Abstract
Mixtures of an alkoxylated quaternary salt and a nitrogen base having from zero to nine carbon atoms are added to carbonaceous materials in oil slurries such as a coal oil mixture (COM) or a coke oil mixture in an amount sufficient to stabilize the slurries during storage and dispersing at various temperatures. Useful stabilizer mixtures include a mixture of from about 99% to about 75% by weight of an alkoxylated quaternary salt which is a reaction product of a cocoamine ethoxylate and diethyl sulfate and from about 1% to about 25% by weight of a nitrogen base such as urea. The stabilizer mixtures may be added to either the oil or slurry (or during grinding of the carbonaceous material) and are effective with or without addition of water. Coal/coke oil slurries may contain from about 40 to about 90 parts by weight of oil, about 10 to about 60 parts by weight of powdered coal or coke, about 0.01 to about 6.0 parts by weight of the stabilizer mixture and about 0 to about 10 parts by weight of water.