Continuous gasifying and cracking multi-effect furnace for plastic recycling

Abstract

The invention discloses a continuous gasifying and cracking multi-effect furnace for plastic recycling, which comprises a base, a kiln cylinder, a tailings burner and a rotationally arranged cylindrical furnace body. The furnace makes the best of energy of plastics to gasify and crack plastics. The cracking and gasifying process comprises the following steps of: firstly, cracking the plastics at the upper part of the cylindrical furnace body, and cracking to generate gas-state crude oil; secondly, gasifying highly carbonic slag generated by cracking at the lower part of the cylindrical furnace body, and further extracting the energy in the plastics; and finally, feeding the slag generated by gasifying into the tailings burner for completely burning, and using heat energy generated by the tailings burning to provide the needed energy for the plastic cracking. According to the invention, through cracking, gasifying and burning, the needed energy for the plastic processing is automatically performed through internal circulation, the plastics are changed into products such as crude oil and combustible gas and the processed final residues are changed into ash. The continuous gasifying and cracking multi-effect furnace processes the plastics thoroughly, so that the damage to the environment caused by the wasted plastics is solved completely.

Description

technical field [0001] The invention relates to a waste plastic processing device, in particular to a device for continuously gasifying and cracking plastic. Background technique [0002] Most of the plastic cracking devices in the prior art use plastic cracking kettles. The disadvantages are: 1. It cannot be continuously produced. After the filling is completed, it will be heated and cracked. - The working process of heating-recooling-reheating wastes a lot of energy, the cost of cracking is high, and the efficiency of cracking is low; The waste heat cannot be fully utilized, and the coke slag contains a high combustion value, because the coke slag is in powder form and has not been further burned, so that the plastic treatment is not thorough; 3. The capacity of the plastic in the plastic cracking kettle is large and cannot be stirred , resulting in poor air permeability of the material layer, uneven cracking reaction, long cracking reaction time, and incomplete cracking;...

AI Technical Summary

Problems solved by technology

[0002] Most of the plastic cracking devices in the prior art use plastic cracking kettles. The disadvantages are: 1. It cannot be continuously produced. After the filling is completed, it will be heated and cracked. - The working process of heating-recooling-reheating wastes a lot of energy, the cost of cracking is high, and the efficiency of cracking is low; The waste heat cannot be fully utilized, and the coke slag contains a high combustion value, because the coke slag is in powder form and has not been further burned, so that the plastic treatment is not thorough; 3. The capacity of the plastic in the plastic cracking kettle is large and cannot be stirred , resulting in poor air permeability of the material layer, uneven cracking reaction, long cracking reaction time, and incomplete cracking; 4. The plastic cracking kettle needs another boiler to provide heat energy, resulting in huge investment in the cracking system equipment and consuming a lot of coal resources. very expensive to run

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