METHOD AND SYSTEM FOR REFINED FUEL THERMAL PROCESSING Russian patent published in 2008 - IPC C10B49/22 

FIELD: chemistry.

SUBSTANCE: invention refers to method and system for refined fuel thermal processing with solid heat carrier, can be used in fuel processing, chemical industries and power engineering. Fuel is dried in gas pipe, heated up in adsorbing exchanger by mixing with gas-vapour mixture and low-temperature coke; gas-vapour mixture and solid phase are separated in cyclone separator. Solid phase from adsorbing exchanger and from cyclone separator is mixed with solid heat carrier in mixing hopper of pyrolysis reactor and supplied to pyrolysis. Fuel is pyrolysed in air-fluidised bed with solid heat carrier in pyrolysis reactor designed as two base-connected cones with concave curvilinear generating. Activated carbon is produced by low-temperature coke fractionation 1-6 mm in separation unit consisting of louvre dust-concentrator, cyclone separator and ejector. Residual low-temperature coke is supplied with gas-vapour mixture to adsorbing exchanger. Gas-vapour mixture processed in cyclone separator is supplied to additional cyclone separator with low-temperature coke delivery. Solid heat carrier is delivered to coke heater with air-fluidised bed equipped with muffle with burners, in-built cyclone separators and bypasses, and returned to pyrolysis. Combustion gas containing dust-like particles is exhausted by bypass to gas pipe for adjustable drying of fuel. Allows for higher efficiency of fuel processing and for production of dust-free low-temperature coke.

EFFECT: higher efficiency of fuel processing and production of dust-free low-temperature coke.

7 cl, 2 dwg