| 摘要 |
A method of mesothermal rapid pyrolysis and repetitious cracking of carbonaceous solid fuel includes: introducing a carbonaceous solid fuel into a pyrolysis furnace, supplying adscititious fuel and oxidant, pyrolysing to obtain carbon and pyrolysis gas. The carbonaceous solid fuel is biomass. The adscititious fuel is imported to the pyrolysis furnace when the furnace is started up, and then the heat energy required for pyrolysis is provided by reaction of oxidant and pyrolysis gas. The temperature of the pyrolysis furnace is 450-550?, the outlet temperature of pyrolysis gas is more than 450?, therefore, mesothermal pyrolysis is achieved. Biomass in the pyrolysis furnace is turned over circumferentially with the average dwell time of the biomass in the furnace is more than 600 seconds and the average dwell time of the pyrolysis gas is more than 120 seconds, so as to realize rapid pyrolysis of biomass and repetitious cracking of pyrolysis gas. The pressure of pyrolysis furnace is adjusted to 0.1-5.0 MPa according to the uses of the pyrolysis gas.
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