Hydrocarbon hydrogenation method with up-flow bed layer and fixed bed operated in series

Abstract

The invention discloses a hydrocarbon hydrogenation method with an up-flow bed layer and a fixed bed operated in series. The method is particularly suitable for the deep hydro-conversion process of medium and low-temperature coal tar containing a moderate quantity of hydrogenolytic metal compounds. A reaction product in an up-flow pre-hydrogenation reaction area R11 contains particles, and particles of predetermined granularity are intercepted in series by a particle intercepting bed arranged in a pre-hydrogenation reaction area R12 of a fixed bed, so that the quantity of particles filling a catalyst bed layer of the fixed bed in a deep hydro-upgrading process R2 for processing an R12 reaction product is reduced. The up-flow pre-hydrogenation reaction area R11 can be an up-flow micro-expansion bed, an up-flow suspension bed, an up-flow boiling bed, an up-flow fixed bed, an up-flow bubbling bed and the like. The porosity or gap equivalent diameter of the catalyst bed layer of the fixed bed in the pre-hydrogenation reaction area R12 is smaller than the porosity or gap equivalent diameter of the catalyst bed layer of the fixed bed in the deep hydro-upgrading process R2.

Description

technical field [0001] The invention relates to a hydrocarbon hydrogenation method in which an upflow bed and a fixed bed are operated in series, and is especially suitable for the deep hydrogenation conversion process of medium and low temperature coal tar containing a moderate amount of easily hydrogenolyzed metal compounds. The upflow prehydrogenation reaction zone The R11 reaction product contains particulate matter, and the particulate matter interception bed set up through the fixed bed pre-hydrogenation reaction zone R12 in series intercepts particulate matter of a predetermined particle size, thereby reducing the fixed bed catalyst bed filling of R2 in the deep hydrogenation modification reaction process of processing the R12 reaction product amount of particulate matter. The upflow prehydrogenation reaction zone R11 can be an upflow type such as micro-expanded bed, suspended bed, ebullating bed, fixed bed, bubbling bed, etc. The porosity or void equivalent diameter of...

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Problems solved by technology

[0026] Process method of the present invention has no report