C - Chemistry – Metallurgy – 10 – B
Patent
C - Chemistry, Metallurgy
10
B
202/9
C10B 53/00 (2006.01) C10B 49/02 (2006.01) C10B 53/02 (2006.01) C10G 1/02 (2006.01) F23G 5/44 (2006.01) F23G 7/00 (2006.01)
Patent
CA 2232015
The invention relates to a process for the selective and safe recovery of residual gases produced in a reactor during pyrolysis of solid carbonizable material, such as wood chips, sawdust and similar wood particles, car fluff, coal, coal residues, plastics, soils contaminated with hydrocarbons, tires and any material rich in polymerized hydrocarbons. The process comprises the steps of introducing said solid carbonizable material into a pyrolysis reactor; making vacuum in the pyrolysis reactor by means of a first pumping system, so as to extract oxygen-containing gases present in said pyrolysis reactor and to exhaust said extracted gases in the air; stopping the first pumping system when the subatmospheric pressure in the pyrolysis reactor is between 1 and 2.5 Psi; introducing a burning combustion gas with a B.T.U of at least 1350 or burning combustion oils with a B.T.U of at least 1800, into the pyrolysis reactor; recovering oils-containing combusted gases from a heating zone of the pyrolysis reactor, condensing the oils present in said combusted gases in a condenser, separately recovering the so condensed oils in a separator and filling by means of a second pumping system a gas storage enclosure connected to the separator by a line with said combusted gases recovered after condensation and separation of the oils; and when the rate of total hydrocarbon content in the gases (THC) present in the gases after condensation and separation of the oils, is lower or equal to 60 %, stopping the second pumping system and exhausting said combusted gases through at least one flare. The process is further characterized in that the first pumping system is mounted on a first derivation of they line connecting the separator and the gas storage enclosure, said first derivation extending between the separator and the gas storage enclosure; and the second pumping system is mounted on a second derivation of the line connecting the separator and the gas storage enclosure, said second derivation extending between the first derivation and the gas storage enclosure.
Hebert Paul
Lamothe Jean-Pierre
Hebco International Inc.
Robic
LandOfFree
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