NOVELTY - Pyrolysis carbonizing kettle comprises metal bucket-shaped carbonizing kettle, wood gas condensing pipe, cooling pond, liquid collecting and gas-collecting pond, gas transmitting pipe, fire spraying nozzle, and wood tar oil and pyroligneous output pipe. The upper end of metal bucket-shaped carbonizing kettle is provided with biomass carbon rod directly connected with inlet end of wood gas condensing pipe.    USE - Pyrolysis carbonizing kettle used for producing liquid gas by destructive distillation.    ADVANTAGE - The pyrolysis carbonizing kettle has low construction cost and realizes recycling of biomass carbonization gas.    DETAILED DESCRIPTION - Pyrolysis carbonizing kettle comprises at least one metal bucket-shaped carbonizing kettle, wood gas condensing pipe, cooling pond, liquid collecting and gas-collecting pond, gas transmitting pipe, fire spraying nozzle, and wood tar oil and pyroligneous output pipe. The upper end of metal bucket-shaped carbonizing kettle is provided with biomass carbon rod directly connected with inlet end of wood gas condensing pipe. The outlet end of wood gas condensing pipe is arranged in cooling pond which is connected with liquid collecting and gas-collecting pond. The upper part of liquid collecting and gas-collecting pond is connected with inlet end of gas transmitting pipe while lower part is connected with wood tar oil and pyroligneous output pipe. The fire spraying nozzle is installed at outlet end of gas transmitting pipe. The fire spraying nozzle is installed under metal bucket-shaped carbonizing kettle. The metal bucket-shaped carbonizing kettles are distributed around cooling pond. Each metal bucket-shaped carbonizing kettle is communicated with liquid collecting and gas-collecting pond via wood gas condensing pipe in cooling pond. The upper part of liquid collecting and gas-collecting pond is communicated with inlet end of gas transmitting pipe. The outlet end of gas transmitting pipe is divided into branch pipes which are connected in parallel and which correspond to bucket-shaped carbonizing kettle. The fire spraying nozzle is installed on each branch pipe. The fire spraying nozzle is arranged on corresponding bucket-shaped carbonizing kettle. The pyrolysis carbonizing kettle also comprises cover plate installed at top part of each bucket-shaped carbonizing kettle.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic cross-sectional view of pyrolysis carbonizing kettle.