Polystyrene waste pyrolysis utilizing device

Abstract

The invention discloses a polystyrene waste pyrolysis utilizing device which comprises a conical shell, a feeding system, a conveying system, an electric heating system, a condensing tower, a fuel gaspreheating system and a solid phase separating device. According to the polystyrene waste pyrolysis utilizing device, part of pyrolysis tar returns a cabin for promoting dissolution; a conical reaction still spirally extrudes material to realize efficient volume reduction of polystyrene waste; the tail end of the anaerobic conical reaction still is heated greatly to promote fast pyrolysis of thepolystyrene waste after volume reduction and realize high aromatic cyclization; preliminary pyrolysis carbon separation is finished after fast pyrolysis; a gas phase mixture is fed in the condensing tower to be separated to obtain pyrolysis gas and pyrolytic tar; the pyrolysis gas is used for returning to the front end of the reaction still for combustion; and the pyrolytic tar is mainly used forextracting chemical materials including styrene, naphthalene and the like or preparing pyrolysis diesel oil, gasoline and the like; and a small amount of pyrolytic tar returns to the cabin for promoting dissolution to accelerate volume reduction of the raw material.

Description

technical field [0001] The invention relates to the technical field of waste resource utilization, in particular to a polystyrene waste pyrolysis utilization device. Background technique [0002] Polystyrene is a petrochemical material widely used in product packaging protection and shockproof filling. Because of its low density and high mechanical strength, its usage is increasing year by year, and it is difficult to find more environmentally friendly alternatives in a short period of time. things. However, because it is difficult to achieve secondary processing after this type of material is finalized, compared with plastic solid waste, it is almost impossible to obtain secondary utilization, and a large amount of polystyrene inner packaging materials are discarded every year. Due to the stable physical and chemical properties of polystyrene, which are difficult to degrade in nature, polystyrene, as a representative source of white pollution, is largely discarded in the p...

AI Technical Summary

Problems solved by technology

However, this device only relies on the friction between the material and the device and the electromagnetic induction device with high operating costs to heat the material to be processed. At the same time, it needs to consume energy in the process of vacuuming, which further increases the operating cost of polystyrene processing.

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