Patent ID: 9050569
Filing Date: 2015-06-09
Classification: B01J,C10G

Abstract:
1. A method for operating a fixed bed reactor with thin layers having a thickness in the range 10 to 500 mm, intended for the treatment of solid particles with a size in the range 30 to 100 microns, said reactor comprising: a plurality of similar modules (M) operating in parallel, enclosed in a common vessel (R) of said reactor, wherein each module (M) comprises: at least two thin layers (CM), having a thickness in the range 10 to 500 mm, of solid particles, with a size in the range 30 to 100 microns, wherein each thin layer is enclosed by a partially porous envelope (P) partially porous envelope (P) having a porous inlet face and a porous outlet face; each of the porous inlet faces of the partially porous envelopes is coupled with at least one diffuser (D) for introduction of reagent gas, wherein diffusers between two adjacent modules are coupled to a porous inlet face of a partially porous envelope in each of said two adjacent modules; each of the porous outlet faces of the partially porous envelopes is coupled with at least one collector (CL) for removal of effluents; at least one pipe (E) for admitting reagent gas into said at least one diffuser (D), wherein said at least one pipe (E) for admitting reagent gas communicates with the exterior of the reactor; at least one pipe (C) for recovering reaction effluents, wherein said at least one pipe (C) for recovering reaction effluents communicates with the exterior of the reactor; at least one pipe (S) for admitting solid particles to be treated into the partially porous envelopes (P); at least one pipe (V) for evacuating treated solid particles from the partially porous envelopes (P), distinct from said at least one pipe (S) for admitting solid particles; said plurality of modules (M) being arranged inside said common vessel (R) so as to form an assembly with a planar or cylindrical geometry; said method comprising the following phases in succession: phase 1: charging solid particles to be treated into upstream metering devices (D phase 2: charging solid particles into at least one of said plurality of modules via said at least one pipe (S) for admitting solid particles; phase 3: flushing the charged module or modules with an inert gas; phase 4: treating the charged module or modules with H phase 5: treating the charged module or modules in H phase 6: flushing the charged module or modules after treatment using an inert gas; phase 7: discharging solid particles from the charged module or modules using said at least one pipe (V) for evacuating treated solid particles to downstream metering devices (Dav); phase 8: cooling treated solid particles to a temperature in the range 100° C. to 150° C.; and phase 9: transferring cooled solid particles;