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. 09, 2015
Filed:
Dec. 21, 2011
Gerhard Gustav Schmitt, Schmitten, DE;
Paul Smit Baumann, Johannesburg, ZA;
Johannes Willem Van Zyl, Rosebank, NZ;
Gerhard Gustav Schmitt, Schmitten, DE;
Paul Smit Baumann, Johannesburg, ZA;
Johannes Willem Van Zyl, Rosebank, NZ;
SASOL TECHNOLOGY (PROPRIETARY) LIMITED, Johannesburg, ZA;
Abstract
A method () of recovering tar from the gasification of a carbonaceous feedstock includes gasifying () a carbonaceous feedstock () to produce a raw gas () which includes at least CO, H, tar and entrained solids, the raw gas () being at a temperature of at least 250° C. and a pressure of at least 15 bar (g). The raw gas () is quenched and washed () with a quench liquid () producing a solids-containing liquid stream () which includes tars, the solids-containing liquid stream being at a temperature of at least 150° C. and a pressure of at least 15 bar (g). Solids () are separated () from the solids-containing liquid stream () to provide a tar recovery stream (). The tar recovery stream () is treated by at least cooling () and pressure expansion () thereof to produce a tar stream ().