Apparatus and method for automobile disassembly waste pyrolysis gasification based on vertical fixed bed

Abstract

The invention provides an apparatus and a method for automobile disassembly waste pyrolysis gasification based on a vertical fixed bed reactor. The pyrolysis gasification apparatus comprises a spiralfeeder, a speed reduction stirrer, a material leveling stirrer, a pyrolysis gasification furnace, an ash discharge fire grate device, an ash discharge stirrer and other main components. The method forcarrying out pyrolysis gasification treatment on the automobile disassembly waste by utilizing the apparatus comprises the following steps: conveying a pretreated material to a feeding hole by virtueof a feeder, feeding the pretreated material into the pyrolysis gasification furnace by virtue of the spiral feeder, and performing a reaction under a medium-high temperature condition; carrying outa redox reaction on semicoke or coke in solid residues and oxygen in a gasification medium; allowing the obtained synthetic gas to pass through the rotary fire grate from a material reaction layer andthen enter a pipeline from an area positioned on the middle side edge of the lower half part of the furnace body, and pumping the synthetic gas into a subsequent purification unit by a fan; and discharging slag downwards through the ash discharge fire grate device, and allowing the slag to fall into a slag collecting area on the lower half portion of the furnace body. The automobile disassembly waste treatment efficiency can be improved, and efficient resource comprehensive utilization is achieved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to the recycling treatment of automobile dismantling waste, in particular to a vertical fixed bed-based pyrolysis gasification device and method for automobile dismantling waste. Background technique [0002] As the number of motor vehicles increases year by year, the resource disposal of scrapped vehicle dismantling waste has aroused widespread concern in the society. The treatment process of scrapped vehicles includes four core processes: recycling, dismantling, crushing, and remanufacturing. The recyclable parts disassembled are directly recycled and remanufactured, and the combustible organic waste that cannot be recycled in the broken residue Resource processing needs to be considered. [0003] The treatment methods of combustible organic matter in the residues of dismantling automobiles, that is, automobile dismantling waste, are similar to solid waste treatmen...

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Problems solved by technology

The updraft fixed bed reactor has high thermal efficiency and simple operation, but more tar will be produced during the pyrolysis process, which will affect the normal operation of the equipment; the downdraft fixed bed can solve the problem of tar well, but the syngas The calorific value is slightly lower than that of the updraft fixed bed

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