Pyrolysis reaction furnace for waste tires

Abstract

The invention relates to the technical field of environmental protection, in particular to a pyrolysis reaction furnace for waste tires. The pyrolysis reaction furnace is characterized by comprising avertical pyrolysis tower, a feeding system and a discharging system; the vertical pyrolysis tower comprises a vertical pyrolysis tower body, a rotary rake roller, an upper bearing seat, a lower bearing seat and supporting feet; the vertical pyrolysis tower body is provided with a jacket for introducing 450-500 DEG C high-temperature flue gas, a hollow spiral blade is designed in the jacket, and the high-temperature flue gas spirally ascends along a channel formed by the hollow spiral blade to uniformly heat the vertical pyrolysis tower body; the problem that high-temperature flue gas cannot flow through dead angles of the vertical pyrolysis tower body to cause bumps is avoided; a pyrolysis oil gas outlet is designed in the upper portion of the vertical pyrolysis tower body, the upper bearing seat and the lower bearing seat are installed at the upper end and the lower end of the vertical pyrolysis tower body, and the coaxiality of the central axis of the vertical pyrolysis tower body and the central axis of the rotary rake roller is guaranteed.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a waste tire pyrolysis reaction furnace. Background technique [0002] Waste tires are common solid waste pollutants, and people use many ways to recycle them to achieve harmless treatment, among which the preparation of fuel oil and carbon black by pyrolysis of waste tires is one of the solutions. Chinese invention patent (patent application number is 02112328.4, patent name is vertical pyrolysis tower for recycling industrial carbon black and fuel oil by pyrolysis of waste tires) discloses a vertical pyrolysis tower for recycling industrial carbon black and fuel oil by pyrolysis of waste tires , which is characterized in that it has a closed vertical tower body, and an upper scraping and stirring device, a tire feed port and a cracking gas outlet are arranged at the upper end of the tower body, and the upper hollow heating disc and the lower hollow cooling disc...

AI Technical Summary

Problems solved by technology

[0003] Existing technology - vertical pyrolysis tower used for pyrolysis of waste tires to recover industrial carbon black and fuel oil A solution is proposed for the continuous production of fuel oil and carbon black by pyrolysis of waste tires. The vertical pyrolysis tower is designed with reference to the working principle of the plate tower Multi-stage trays (hollow discs), but plate towers are suitable for gas-liquid two-phase fluids, not suitable for waste tire rubber blocks, let alone rubber blocks containing steel wires. The reason is very simple, the rubber block in the cracked state is viscous The jelly will block the passage for fluid flow in the hollow disc, resulting in the stop of the cracking reaction process, and the agglomerated steel wires will not only block the flow channel, but also sink into the rake blade and the disc, causing the agitator shaft to lock; the existing Technology 2 The waste tire pyrolysis device is similar to the working principle of a reactor with an external heating jacket and a built-in agitator. The high-temperature flue gas passes through the flue chamber between the inner wall of the furnace and the hearth body to heat the hearth body. The arm stirs and mixes the rubber blocks of waste tires. In order to increase the heat exchange area, the upper and lower annular disks are designed with flue gas passages for high-temperature flue gas. The disadvantage is that the rubber blocks containing steel wires form viscous particles during the pyrolysis process. The mixture containing steel wire pellets adheres to block all flow channels such as the feeding channel, thereby stopping the pyrolysis process

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