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Microwave quenching based sludge pyrolysis disposal method

A technology of pyrolysis and sludge, applied in the direction of combustion method, lighting and heating equipment, combustion type, etc., can solve the problems of very high automatic control level and large space required, and achieve the elimination of toxic and harmful gases such as dioxin , Strong practicability and simple installation

Active Publication Date: 2017-06-13
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pyrolysis gas produced by pyrolysis and incineration needs to stay in the combustion chamber for a sufficient time for full combustion, resulting in a very high level of automatic control for the incineration system and a large space required, which has become the inconvenience of the practical application of the pyrolysis incineration method place

Method used

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  • Microwave quenching based sludge pyrolysis disposal method
  • Microwave quenching based sludge pyrolysis disposal method

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Effect test

Embodiment 1

[0036] The sludge pyrolysis disposal method based on microwave quenching includes garbage feeding device, pyrolysis furnace, microwave combustion furnace, tail gas purification device and slag solid waste cleaning device. The entire pyrolysis incineration system is closed and under negative pressure. After the sludge is pulverized at the discharge port, it is sent to the pyrolysis furnace for pyrolysis, and the form of the pyrolysis furnace is a rotary kiln with mature technology. The pyrolysis gas produced in the rotary kiln is pumped by the fan to the air inlet on the top of the microwave oven, and then the pyrolysis gas is mixed with the air sent by another fan for combustion. The pyrolysis residual carbon falls on the high temperature plate in the microwave combustion furnace as a strong microwave-absorbing medium, and the residual carbon layer is heated to a temperature of 1200-1500 °C. The opening size of the high temperature plate meets the requirements for preventing mi...

Embodiment 2

[0038]A sludge pyrolysis treatment device based on microwave quenching, comprising: a feeding device, a pyrolysis device, a microwave combustion device, an exhaust gas purification device, a slag solid waste cleaning device, a fan, and an air preheater; the feeding device, The pyrolysis device, the microwave combustion device and the slag solid waste cleaning device are connected in sequence, and a gas circulation pipeline is also arranged between the pyrolysis device and the microwave combustion device; the pyrolysis device is also connected in sequence with the air preheater and the tail gas purification device When in use, the pyrolysis gas and pyrolysis residual carbon produced by the pyrolysis device are respectively input into the microwave combustion device through the fan and the material channel, and after full combustion, the high-temperature tail gas produced is returned to the pyrolysis device and the air preheater in turn . Tail gas purification device; the pyrolys...

Embodiment 3

[0041] A sludge pyrolysis treatment device based on microwave quenching, comprising: a feeding device, a pyrolysis device, a microwave combustion device, an exhaust gas purification device, a slag solid waste cleaning device, a fan, and an air preheater; the feeding device, The pyrolysis device, the microwave combustion device and the slag solid waste cleaning device are connected in sequence, and a gas circulation pipeline is also arranged between the pyrolysis device and the microwave combustion device; the pyrolysis device is also connected in sequence with the air preheater and the tail gas purification device When in use, the pyrolysis gas and pyrolysis residual carbon produced by the pyrolysis device are respectively input into the microwave combustion device through the fan and the material channel, and after full combustion, the high-temperature tail gas produced is returned to the pyrolysis device and the air preheater in turn . Tail gas purification device; the pyroly...

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Abstract

The invention provides a microwave quenching based sludge pyrolysis disposal method. The method is characterized in that a garbage feed device, a pyrolyzing furnace, a microwave furnace, an emission control device and a slag solid waste cleaning device are involved, carbon residues of garbage subjected to pyrolysis in the pyrolyzing furnace are discharged into the microwave furnace to serve as a strongly-absorbing medium, pyrolysis gas generated from the pyrolyzing furnace which is raised in temperature rapidly is enabled to fully burnt when penetrating a high-temperature residual carbon layer, poisonous and harmful gas of dioxin and the like in the pyrolysis gas is completely eliminated, and damage to the environment by refuse burning is reduced to a greater extent. The microwave quenching based sludge pyrolysis disposal method is simple in step, convenient in operation and high in practicability.

Description

technical field [0001] The invention belongs to the field of sludge treatment, in particular to a sludge pyrolysis treatment method based on microwave quenching. Background technique [0002] At present, the amount and harmfulness of domestic sludge are increasing continuously. The sludge treatment methods mainly include landfill, incineration, composting, land utilization and building material utilization, and incineration can maximize the reduction of sludge, and all pathogens are eliminated. It can be killed, the toxic pollutants are oxidized, the activity of heavy metals in the stucco is much lower than that in the sludge, and the sanitation conditions are greatly improved, but the core problems are large system investment, high treatment costs, and dioxins produced by the combustion of organic matter. Although highly toxic substances such as British can reduce the amount of sludge to a certain extent, this method is oxygen-enriched combustion and has a large amount of i...

Claims

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Application Information

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IPC IPC(8): F23G7/00
CPCF23G7/001F23G2201/302F23G2201/303F23G2206/20
Inventor 毛岩鹏赵希强王文龙宋占龙孙静姚连升
Owner SHANDONG UNIV
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