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:
Feb. 02, 1993
Filed:
Dec. 15, 1991
Douglas K Holland, Rialto, CA (US);
Edward W Dillingham, McFarland, KS (US);
Texaco Inc., White Plains, NY (US);
Abstract
Quenched slag discharged from a gasification process such as a coal gasification process can be continually dewatered and removed without disrupting operations by alternately discharging the quenched slag from means such as lockhoppers and directing the slag to one of two disengagement zones symmetrically arranged on either side of a clear water pit. The slag settles along a sloping active disengagement zone, allowing water to separate and drain into an adjacent slag pit. The accumulated water is drained into the clear water pit through vertically-spaced drains in the walls separating the slag pits from the clear water pit and pumped away after solids have settled. After an active disengagement zone-slag pit is used for a period of time, perhaps 24 hours, the discharge of slag is redirected to the other such area while dewatered slag is removed from the first slag pit.