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:
Jul. 04, 1978
Filed:
Mar. 28, 1977
Roland Rammler, Konigstein, DE;
Paul Schmalfeld, Bad Homburg, DE;
Hans-Jurgen Weiss, Frankfurt am Main, DE;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
The present invention relates to a process for the recovery of hydrocarbonaceous materials from tar sand comprising subjecting a part of the tar sand to hot water extraction by mixing it with hot water, the solids and bitumen being separated and the latter treated further, and carrying out a dry distillation of another part of the tar sand which is thereby heated to temperatures above 400.degree. C, the gaseous and vaporous distillation products being cooled and condensed. This process is characterized in that at least a portion of the thermal energy required for hot water extraction originates in the dry distillation waste heat. This process is further characterized in that the solid coke-like residue recovered from the further treatment of the bitumen from hot water extraction is used as fuel in the dry distillation and in that the wet solids recovered from hot water extraction are mixed with the dry distillation residue to form a solid product which can be transported on belt conveyors.