Veba Oel Ag

Ruhrkohle Ag

Veba Oel Entwicklungs-gesellschaft Mbh

Claus Strecker

Klaus Niemann

Rolf Holighaus

Wolfdieter Klein

Alfons Feuchthofen

Ulrich Bonisch

Christian Hecka

Wolf-Dieter Klein

Ulrich Boenisch

Horst Hastrich

Method for processing recycled or scrap plastics

Process for recovering synthetic raw materials and fuel components from

A method of processing hydrocarbon substances including coal, heavy crude oil, and bitumen by hydrogenating the hydrocarbon substance with a gas containing from 20%-100% hydrogen at a pressure in the range of from 50 bar to 700 bar and at a temperature in the range of from 250.degree. C. to 600.degree. C. to produce a hydrogenation residue which is treated in a secondary stripping operation using hydrogen gas at a pressure between about 1.2 bar and 150 bar to recover light hydrocarbon gases from the hydrogenation residue.

Method of processing substances

A process for the hydrogenation of a liquid hydrocarbon-containing charge material, comprising the steps of: (i) supplying a high temperature high pressure liquid phase hydrogenation reactor with two separately and indirectly heated charge streams, (a) a primary charge stream comprising liquid hydrocarbon oils, oil residues, syncrudes, tars or pitches and optionally coal, and hydrogen-containing gas, and (b) a directly heated secondary gaseous charge stream comprising hydrogen-containing gas, and combining said indirectly heated primary charge stream and said indirectly and directly heated secondary charge stream prior to said liquid phase hydrogenation reactor, hydrogenating the combined streams to produce a hydrogenation product and separating the hydrogenation product in a hot separator to give a hot separator head product; wherein said indirectly heated primary and secondary charge streams are heated by separate heat exchange means by heat exchange with said hot separator head product, and said secondary charge stream, after heating by heat exchange, is directly heated with a hydrogenation gas heater.

Process for the hydrogenation of liquid charge materials which contain

A method for pretreating a coal hydrogenation feedstock with preheated hydrogen containing a hydrogenation gas under high pressure and at elevated temperature, in a liquid phase slurry system, is disclosed. In this process a mixture of a slurry of finely ground coal and a slurry oil are fed to a preheater before being subjected to a hydrogenation and liquefaction reaction in a cascade of reactors at a pressure of from 100 to 40 bars and a temperature of 420.degree. to 490.degree. C. The reaction products are fed to a hot separator. In the process of the invention, prior to its preheating, a first partial stream of the hydrogenation gas, referred to as the slurry gas, is added to the mixture at process pressure. A second partial stream of the hydrogenation gas is heated by indirect heat exchange with a gaseous hot separator product in a gas heat exchanger. The mixture of slurry and slurry gas is preheated through indirect heat exchange in at least one heat exchanger downstream from the first gas heat exchanger, through which flows the hot separator head product after passing through the first heat exchanger. The heated second partial stream of hydrogenation gas is then added to the preheated mixture of slurry and slurry gas. This process provides improved heat transfer during the preheating of the coal-oil slurry and the mixture in a slurry with a hydrogenation gas.

Method for pretreating feedstocks for coal hydrogenation

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Gelsenkirchen, Germany

Claus Strecker