GB431795A - Improvements in and relating to the treatment of carbonaceous materials with hydrogenating gases - Google Patents

Abstract

<PICT:0431795/III/1> In a multi-stage process of destructive hydrogenation in which the carbonaceous materials are treated initially in the liquid phase and finally in the vapour phase, the products from the first stage are separated in a catch-pot maintained under such conditions that no condensation takes place, i.e. at a temperature less than 20 DEG C. below that of the reaction vessel, and the vapours are passed without condensation to the vapour phase stage. Crude oil supplied through a line 1 and mixed with hydrogen from a line 3 is passed through a preheater, where it is heated up 400 DEG C., into a reaction chamber 7. The reaction products are separated in a hot separator 13 from which liquids are removed through a line 17 or recycled through a line 16 while vapours pass, with or without further heating in a coil 22 into a vapour phase reaction chamber 29 maintained about 390 DEG C. by passing cold hydrogen through tubular conduits not shown. The vapours produced are condensed in a cooler 31 and separated in a separator 32 from gases which are recycled through lines 36, 38. In a modification the vapours after leaving the catch-pot may be condensed and treated with hydrogen at 200--300 DEG C., to remove unstable constituents, prior to final treatment in the gas phase. The use of the usual catalysts mounted stationary in the reaction chambers is specified. Specifications 336,610 and 338,576, [both in Class 32], are referred to.