METHOD OF CONVERTING CARBON-CONTAINING MATERIAL INTO SYNTHESIS GAS WITH LOW CONTENT OF RESIN Russian patent published in 2020 - IPC C10J3/84 C10J3/06 C10J3/24 C10J3/40 

FIELD: technological processes.

SUBSTANCE: invention relates to gasification of carbon-containing feedstock/fuel, particularly to a continuous multi-step method and a device for converting carbon-containing fuel materials into synthesis gas. Disclosed is a method for gasification with a vertical sequence for conversion of solid carbon-containing fuel material to a purified (with low content of resin) synthesis gas in a gasifier, consisting of: i) pyrolysis zone, ii) zone of partial oxidation; iii) a recovery zone consisting of an inclined perforated bottom, one or more holes located at the center relative to the perforated bottom, and a reflector located at the center. Said method involves the following steps: a) supplying carbon-containing fuel material through upper part of pyrolysis zone downward in vertical direction to lower part of pyrolysis zone; b) adding, optionally, a first oxidizing agent to a lower portion of the pyrolysis zone to obtain a temperature higher than 200 °C; c) directing the pyrolysis vapor into the partial oxidation zone (POZ), and the pyrolysis residue down into the reduction zone through the separation element; d) adding a second oxidizing agent to the partial oxidation zone; e) forming a pyrolysis residue layer of uniform thickness from the pyrolysis residue formed at step c) on the bottom; f) passing the crude synthesis gas downstream step d) through a layer of crude pyrolysis residue formed at step e) and performing an endothermic reaction between the CO₂ and/or H₂O in the crude synthesis gas and carbon char in the pyrolysis residue layer; g) passing resin-free reinforced synthesis gas after step f) in an upward countercurrent for heating the pyrolysis zone and subsequent cooling of the resin-free reinforced synthesis gas; h) collecting enhanced synthesis gas; and i) collecting decarburized pyrolysis residue from gasifier bottom.

EFFECT: technical result consists in obtaining stably clean gases, such as synthesis gas with low content of resins.

30 cl, 5 dwg