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, 1999
Filed:
Jun. 19, 1998
Partha S Ganguli, Princeton, NJ (US);
Hydrocarbon Technologies, Inc., Lawrenceville, NJ (US);
Abstract
Municipal solid waste (MSW) material is sized to provide a particulate material which is density separated into organic and inorganic portions using a suitable polar acidic organic liquid medium. The organic-MSW portion is digested in the polar acidic organic medium such as phenol at conditions of 500-850.degree. F. temperature, 300-2000 psig pressure and 5-100 minutes residence time. The digested organic material is then fractionated to produce gas, a light liquid boiling below about 170.degree. C., the polar acidic organic liquid medium such as phenol, boiling between 170 and 220.degree. C., and a liquid slurry boiling above about 220.degree. C. and including a powder material melting above about 400.degree. C. The recovered acidic organic liquid fraction is preferably recycled back to the density separation and/or digesting steps for further use in the process. The liquid slurry fraction product having heating value of 9,000-16,000 Btu/lb. can be utilized as a clean fuel for combustion such as in steam boilers, or it can be catalytically hydrogenated for producing lower boiling hydrocarbon liquid fuels.