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:
Jun. 30, 1981
Filed:
Nov. 21, 1979
Charles Greenfield, Murray Hill, NJ (US);
Anthony J Bonanno, Parsippany, NJ (US);
Hanover Research Corporation, East Hanover, NJ (US);
Abstract
An apparatus and process for dehydrating waste solids concentrates including secondary and digested sewage sludges and those concentrates prone to form emulsions upon the addition of oil are obtained and accomplished by mixing the sludge or other concentrate with fluidizing oil prior to dehydration by heat evaporation to maintain pumpability; recycling a portion of the substantially anhydrous waste solids and oil evaporator output slurry, and admixing it with the fluidizing oil and input sludge or concentrate to regulate the solids content and viscosity of the steady state feed mixture and thereby prevent fouling of the evaporator heat transfer surfaces and convert emulsions to suspensions.