METHOD OF PYROLYSIS WITH HELP OF BOILER AND DEVICE TO THIS END Russian patent published in 2014 - IPC C10B49/22 C10B49/16 C10B47/24 F23C10/04 B01J8/18 

FIELD: oil-and-gas industry.

SUBSTANCE: proposed method comprises recycling carrier material obtained at combustion 1 in the boiler fluidised bed to combustion process in pyrolysis 4b. Here, said material is mixed with solid propellant to extract condensable gaseous substances by heat released by hot carrier material incidental to offgas. Then, it is separated from offgas in separator 3 and forced by gravity between said separator 3 and combustion process in pyrolysis 4b. Wherein condensed gases are separated by fluidisation from said carrier mix and propellant. Now gases are separated from gas flow 7 of pyrolysis and converted into fluid as so-called pyrolysis oil. This method differs from known processes in that pyrolysis 4b is staged in boiler combustion chamber with circulating fluidised bed wherefrom carrier material coke and other combustibles mixed with carrier are forced via one or more return outlet pipes into combustion chamber. Invention covers the device for pyrolysis including combustion chamber 1 for combustion in fluidised bed, pyrolysis reactor 4 for circulation of carrier material in combustion in fluidised bed between combustion chamber and pyrolysis reactor. Note here that it additionally comprises fuel feed means 4, fluidising gas feed means 5 arranged in pyrolysis reactor and outlet 6 to extract condensable gases fro aid reactor 4 and gases condenser 8. Note that carrier material is circulated in combustion chamber simultaneously with hot offgas flow. Separator 3 is located above pyrolysis reactor 4. Said separator can separated carrier material from offgas. Circulation circuit comprises connection pipeline 11, 12 between separator 3 and pyrolysis reactor 4 to transfer carrier material by gravity to reactor 4 and return pipe 12, 12' between reactor 4 and combustion chamber 1 to feed carrier material to combustion chamber 1. Note that outlet 6 is made in pyrolysis reactor chamber 4, at its top section over the mix of carrier material fluidised bed with propellant, to discharge condensed gases from said reactor. Proposed device differs from known designs in that pyrolysis chamber is confined by combustion chamber 1 communicated via one or more return outlet 12` With combustion chamber 1.

EFFECT: simplified circulation circuit.

18 cl, 5 dwg