Electronic waste cracker

Abstract

The invention relates to the technical field of waste pyrolysis, in particular to an electronic trash cracker which comprises an electronic trash cracking reactor and an electric heating system. The electronic trash cracking reactor comprises a material cracking component, a reactor shell and an indirect heat exchanger, the material cracking component comprises a spiral shell and a propeller, a material outlet, a cracking gas outlet and a residue outlet are formed in the spiral shell, an oil-gas outlet pipe and a pyrolysis gas inlet pipe are positioned in the middle of the reactor shell, a gas inlet end of the indirect heat exchanger is connected with the oil-gas outlet pipe, and an outlet end of the indirect heat exchanger is connected with the pyrolysis gas inlet pipe. The electric heating system comprises a heating module and an insulating layer, wherein the insulating layer is positioned on the outer surface of the spiral shell inside a closed space, and the heating module is arranged on the outer surface of the insulating layer. The cracker has the advantages of high pyrolysis efficiency, feeding and discharging continuity, stability of heat sources, pressure and atmosphere in the cracker, remarkable secondary resource utilization energy-saving effects and the like.

Description

Technical field [0001] The invention relates to the technical field of garbage pyrolysis, in particular to an electronic garbage cracking device. Background technique [0002] In recent years, various electronic products are changing with each passing day, and the replacement of old and new is faster and faster. The resulting electronic waste is increasing exponentially. The heavy metal elements contained in it will seriously pollute the environment. If the electronic waste is not handled properly, it will produce toxic and harmful gases such as dioxins and cause secondary pollution. At present, the processing methods used for electronic circuit boards mainly include mechanical physical method, metallurgical extraction method, biological treatment method and pyrolysis method, among which mechanical physical method, metallurgical extraction method, biological treatment method, etc. mainly focus on the metal in the circuit board Recycling, the pyrolysis method can not only recover...

AI Technical Summary

Problems solved by technology

During the pyrolysis experiment, first put the pyrolysis reactor with the material into the resistance furnace, then open the nitrogen bottle and inject nitrogen to start purging. After sufficient time, the resistance furnace is energized to generate a high-temperature temperature field, and the material begins to Pyrolysis, the gas bag starts to collect gas, and when the gas is no longer generated, the experiment is over. After the furnace body is naturally cooled to 40°C, the furnace body is opened, the pyrolysis residue is taken out, weighed and elemental analysis is performed, and finally the instrument is turned off. The fixed-bed pyrolysis experimental method cannot realize the continuous inflow and outflow of materials, and correspondingly cannot realize the continuous pyrolysis of materials.

Images