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. 05, 1980
Filed:
Oct. 07, 1977
Metallgesellschaft Aktiengesellschaft, Frankfurt, DE;
Abstract
In the production of gas from a solid fuel comprising effecting gasification by contacting the solid fuel with oxygen and water under pressure to form raw gas containing tar, solids and water, cooling the raw gas to effect condensation of the tar and water, the condensate containing the solids, separating from the solids-containing condensate a fraction enriched in solids, and disposing of said fraction, the improvement which comprises effecting said disposition by feeding at least part of said fraction to a solids disintegrator wherein the solids are reduced in size, and recycling at least part of the condensate containing disintegrated solids to the gasification step. Disintegration serves to reduce substantially all the particles to below about 2 mm with the predominant part below about 0.5 mm. Part of the condensate may also be recycled to the separation stage and all the recycled condensate is kept above 50.degree. C. to prevent solidification of tars. The process permits continuous operation of a gasification plant without clogging of pipes and pumps such as otherwise necessitate equipment shutdown for cleaning.