BUBBLING BED CATALYTIC HYDROPYROLYSIS PROCESS UTILISING LARGER CATALYST PARTICLES AND SMALLER BIOMASS PARTICLES FEATURING ANTI-SLUGGING REACTOR Russian patent published in 2017 - IPC C10G1/06 C10G1/08 B01J8/18 B01J8/34 C10G3/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a hydropyrolysis method. Hydropyrolysis method includes: a. introducing solid particles of an oxygenated organic feedstock into a fluidized bed reactor, wherein said feedstock is rapidly heated from ambient temperature to temperature of fluidized bed, and is thereby devolatilized; b. introducing a stream of fluidizing gas comprising mostly molecular hydrogen into fluidized bed reactor, creating conditions under which rapid mixing and heat transfer occur throughout fluidized bed; c. maintaining a deep bed of solid particles of catalyst, depth of which is significantly greater than 2 reactor diameters, in a state of vigorous motion, to promote reactions resulting in deoxygenation and chemical stabilisation of vapours produced when feedstock is devolatilized; d. removing solid residues, containing ash and charcoal, remaining after devolatilization and hydropyrolysis of feedstock, from fluidized bed reactor via entrainment in stream of fluidizing gas and product vapours exiting fluidized bed reactor; e. removing attrited residues of catalyst, but not intact particles of catalyst, or particles of catalyst that have been minimally attrited, from fluidized bed reactor via entrainment in stream of fluidizing gas and product vapours exiting fluidized bed reactor; f. separating solid residues, entrained in stream of fluidizing gas and product vapours exiting fluidized bed reactor, from stream of fluidizing gas and product vapours exiting fluidized bed reactor; g. recovering a product stream of hydrocarbon vapours comprising hydrocarbon products with atmospheric-pressure boiling points, consistent with those of at least one of gasoline, kerosene and diesel fuel, from hydropyrolysis process as condensed liquid; h. releasing enough exothermic heat from deoxygenation reactions occurring during hydropyrolysis of feedstock to supply process heat required by endothermic processes occurring during hydropyrolysis of feedstock, including chemical reactions, heating of feedstock, and evaporation of liquids; and i. dispersing one or more obstacles to an interior of reactor vessel in such a manner that “slugging” does not occur within fluidized bed reactor.

EFFECT: technical result is increased output of liquid hydrocarbon products with oxygen content lower than 4 wt%, improved process parameters due to reduction of "slugging" in reactor.

64 cl, 6 dwg, 1 tbl