Waste plastic and molten salt cracking tower

Abstract

The invention discloses a waste plastic and molten salt cracking tower. The waste plastic and molten salt cracking tower comprises a molten salt furnace and a cracking tower body connected with the molten salt furnace through a salt conveying pipe, wherein the top part of the cracking tower body is provided with a rotor feeder, the upper part of the cracking tower body is provided with a molten salt inlet, the lower part is provided with a molten salt outlet, a plurality of tower plates are arranged between the molten salt inlet and the molten salt outlet in the cracking tower body, the cracking tower body is also provided with a cracking gas outlet, the cracking gas outlet is located below a second tower plate counted from top to bottom, the bottom part of the cracking tower body is provided with a tapered molten salt sedimentation basin, the bottom part of the sedimentation basin is provided with a lower deslagging device, and the lower part of the cracking tower body is provided with an upper deslagging device. According to the waste plastic and molten salt cracking tower provided by the invention, when waste plastic floats on the surface of molten salt for being heated, a part of molten salt dropping from the tower plates impacts the waste plastic, so that the molten salt can be fully mixed with the waste plastic to improve a heat transfer effect, gasified plastic then passes through molten salt pillars dropping from openings of the tower plates, so that the heat transfer area is further increased and a cracking process is more sufficient.

Description

technical field [0001] The invention belongs to the technical field of processing fuel by cracking waste plastics, and in particular relates to a molten salt cracking tower for waste plastics. Background technique [0002] The traditional waste plastic pyrolysis device mainly uses partition wall heat exchangers for heating, which has problems such as coking, low heat transfer efficiency, uneven heat transfer, and low cracking efficiency. The Chinese patent with application number 201110174043 (application date: 2011.6.24, publication date: 2011.11.30, publication number: CN102260515A) provides a method and device for direct pyrolysis treatment of molten salt and waste plastics. Uniform mixing results in uneven heat transfer, and the cracking efficiency needs to be further improved. Contents of the invention [0003] The object of the present invention is to provide a waste plastic molten salt pyrolysis tower, which solves the problem that the molten salt and waste plastic...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a waste plastic molten salt pyrolysis tower, which solves the problem that the molten salt and waste plastic in the existing device are difficult to mix evenly, resulting in uneven heat transfer

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