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:
Oct. 31, 1978
Filed:
Jun. 01, 1977
Helmut Wurfel, Niederwurzbach, DE;
Saarbergwerke Aktiengesellschaft, Saarbrucken, DE;
Abstract
A process for the separation of solids containing residues from a liquid fraction containing higher boiling fractions produced in a coal hydrogenation process at elevated temperatures and pressures. The separation process involves two expansion steps, one step in an expansion engine and a subsequent expansion-evaporation step in a pressure release means and a separator chamber, whereby the higher boiling fraction is evaporated and separated from the residue fraction. The separation process in the chamber can be facilitated by creating vacuum conditions therein, or by introducing a foreign gas, preferably heat exchange with the removed hot residue fraction, to thereby reduce the partial pressure of the evaporated higher boiling fraction. The foreign gases can be steam or/and gases obtained from the hydrogenation of the coal.