CN110303032A - A medium frequency induction heating pyrolysis garbage disposal device and garbage disposal system - Google Patents

Abstract

The invention discloses a medium-frequency induction heating pyrolysis waste treatment device, and relates to a waste and solid waste treatment system, which comprises a pyrolysis furnace body, a feeding mechanism and a discharging mechanism. An intermediate frequency induction heating layer is installed indoors, which is used for intermediate frequency induction heating of garbage. The pyrolysis furnace body is connected with a feeding mechanism and a discharging mechanism, which are respectively used to realize the feeding and discharging actions. The beneficial effects of the present invention are: : It can perfectly change the treatment method of waste and solid waste, reduce transportation costs and secondary pollution during transportation, and be used for the resource treatment of solid waste and the manufacture of renewable fuel. It will undoubtedly become a promising solid waste treatment method. The adoption of high-pressure high-temperature thermal cracking device is no longer simply to deal with and eliminate waste, but also focus on the recycling of energy and other resources in urban waste to achieve the comprehensive effect of environmental protection, energy saving, and resource regeneration and recycling.

Description

A medium frequency induction heating pyrolysis garbage disposal device and garbage disposal system

technical field

The invention relates to a waste and solid waste treatment system, in particular to an intermediate frequency induction heating pyrolysis waste treatment device and a waste treatment system.

Background technique

The traditional garbage disposal methods mainly include landfill, incineration, etc., which will occupy a lot of valuable land resources and pollute the environment (atmosphere, groundwater, etc.), so this simple disposal method is basically no longer used. Compared with landfill disposal, waste incineration is a better disposal method. Through incineration, not only the volume is greatly reduced, but also the heat generated by incineration can be used to generate electricity and heat, so as to achieve the purpose of energy reuse. Therefore, incineration technology has become a widely used waste treatment technology at home and abroad. However, there are still many problems in the direct incineration of garbage, such as: (1) The problem of secondary pollution, acid gas, highly toxic chlorine-containing polymer compounds (collectively referred to as dioxins) and mercury-containing flying substances produced by the incineration of organic substances in garbage components Ash will pollute the environment; (2) The problem of damage to the incineration equipment, chlorine-containing compounds in the garbage form corrosive gases in the furnace, which will seriously corrode the metal parts in the furnace at temperatures above 250 degrees; (3) The composition of garbage is complex and varied. The components have different densities, shapes, chemistries, ignition and combustion characteristics, and they exhibit different combustion characteristics in the incinerator, making it difficult to control the combustion process. In order to overcome the above shortcomings of waste incineration technology, high temperature thermal pyrolysis technology of waste as an alternative technology for waste incineration has been developed and applied.

Intermediate frequency high temperature thermal cracking, thermal decomposition or carbonization refers to the process of heating organic matter in the absence of oxygen to decompose it. That is, high-temperature thermal cracking is to use the thermal instability of organic matter, in the absence of oxygen or lack of oxygen, the use of thermal energy to break the bond of the compound, and convert the organic matter of large molecular weight into combustible gas, liquid fuel and coke of small molecular weight. process. The similarity between high temperature thermal cracking and incineration is that both are thermochemical conversion processes, but they are two completely different processes. The main differences are:

(1) The products of incineration are mainly carbon dioxide and water, while the products of high temperature thermal cracking are mainly combustible low molecular compounds, gaseous ones include hydrogen, methane, carbon monoxide, and liquid ones include methanol, acetone, acetaldehyde and other organic compounds, as well as tar and solvent oil. etc., the solid state mainly includes coke or carbon black; (2) Incineration is the oxidation reaction of carbon and hydrogen, the main combustible substances in solid waste, and is an exothermic process, while high-temperature and high-pressure thermal cracking is a heating process that requires a large amount of heat to decompose organic compounds;

(2) Incineration can only use the generated heat for power generation or heating, and the products of high temperature thermal cracking are fuel gas and fuel oil, which can be recycled and are easy to store and transport.

Based on this, the present application proposes an intermediate frequency induction heating pyrolysis garbage disposal device and a garbage disposal system.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an intermediate frequency induction heating pyrolysis garbage disposal device and a garbage disposal system to solve the problems raised in the above background technology.

To achieve the above object, the present invention provides the following technical solutions:

A medium-frequency induction heating pyrolysis waste treatment device, comprising a pyrolysis furnace body, a feeding mechanism and a discharging mechanism, wherein a high-temperature pyrolysis chamber is arranged in the pyrolysis furnace body, and an intermediate-frequency induction heating layer is installed in the high-temperature pyrolysis chamber, which is used for intermediate-frequency induction heating of garbage. For induction heating, the cracking furnace body is connected with a feeding mechanism and a discharging mechanism, which are respectively used to realize the feeding and discharging actions.

As a further solution of the present invention, an insulation layer and a shell protection layer are sequentially arranged on the outside of the intermediate frequency induction heating layer.

As a further solution of the present invention, the feeding mechanism and the discharging mechanism are provided with sealed chambers.

As a further solution of the present invention: the discharge mechanism is connected with an oil and gas mechanism and a slag discharge port.

As a further solution of the present invention, a load-bearing steel ring is fixed on the outside of the cracking furnace body, and the load-bearing steel ring is driven and rotated by a driving mechanism to drive the rotation of the cracking furnace body.

As a further solution of the present invention, the driving mechanism includes a driving wheel in contact with the surface of the load-bearing steel ring and a guide limit wheel in contact with the side surface of the load-bearing steel ring.

A garbage disposal system, comprising the above-mentioned intermediate frequency induction heating pyrolysis garbage disposal device.

Compared with the prior art, the present invention has the beneficial effects that: it can perfectly change the treatment mode of waste solid waste, reduce transportation cost and secondary pollution during transportation, be used for the resource treatment of solid waste, and manufacture regenerated fuel, Undoubtedly, it has become a promising solid waste treatment method. The use of high-pressure and high-temperature thermal cracking devices is no longer simply to deal with and eliminate waste, but also focus on the recycling of energy and other resources in urban waste to achieve environmental protection, energy saving, and resource utilization. The combined effect of regenerative cycle applications.

Description of drawings

FIG. 1 is a schematic structural diagram of an intermediate frequency induction heating pyrolysis waste treatment device.

Figure 2 is a side view of an intermediate frequency induction heating pyrolysis garbage disposal device.

FIG. 3 is a schematic structural diagram of a cracking furnace body in an intermediate frequency induction heating pyrolysis waste treatment device.

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 .

In the picture: 1- cracking furnace body, 101- shell protective layer, 102- insulation layer, 103- intermediate frequency induction heating layer, 104- high temperature cracking chamber, 2- sealing chamber, 3- expansion joint, 4- oil and gas mechanism, 5- Slag discharge port, 6-bearing steel ring, 7-feeding mechanism, 8-discharging mechanism.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of apparatus and methods consistent with the aspects disclosed in the present embodiments, as recited in the appended claims.

Example 1

Referring to FIGS. 1 to 4 , in the embodiment of the present invention, an intermediate frequency induction heating pyrolysis waste treatment device includes a cracking furnace body 1 , a feeding mechanism 7 and a discharging mechanism 8 . In this embodiment, the cracking furnace body 1. There is a high temperature cracking chamber 104, and a medium frequency induction heating layer 103 is installed in the high temperature cracking chamber 104. The outside of the medium frequency induction heating layer 103 is sequentially provided with a thermal insulation layer 102 and a shell protective layer 101, which are used for medium frequency induction heating of garbage, In practical application, the AC rail with a power frequency of 50 Hz in this technical solution becomes a source device with an intermediate frequency (300 Hz to 20 kHz). The intermediate frequency current generates high-density magnetic lines of force in the induction coil, and generates a large eddy current in the metal material to realize the function of heating and cracking. Of course, the cracking furnace body 1 is connected with a feeding mechanism 7 and a discharging mechanism 8 , which are used to realize the feeding and discharging functions respectively.

In practical application, it is necessary to ensure the sealing performance of the cracking furnace body 1 so as to realize the creation of anoxic or anaerobic conditions. Therefore, in this embodiment, the feeding mechanism 7 and the discharging mechanism 8 are provided with seals. Chamber 2, here, the sealing chamber 2 can be understood as a valve device, which can ensure the sealing performance of the cracking furnace body 1 when it is in a closed state.

Of course, in practical application, the products of the cracking furnace body 1 not only include waste solid waste that cannot be cracked, but also include some oil and gas products. Therefore, the discharge mechanism 8 is connected with an oil and gas mechanism 4 and a slag discharge port 5. Specifically In other words, the oil and gas mechanism 4 is actually a pipeline used to discharge the oil and gas produced by cracking, and the slag discharge port 5 is used to discharge the waste solid waste carbon black and coke that cannot be cracked.

As for the installation method of the cracking furnace body 1, a load-bearing steel ring 6 is fixed on the outside of the cracking furnace body 1, and the load-bearing steel ring 6 is driven and rotated by a driving mechanism to drive the rotation of the cracking furnace body 1, so that the internal The waste and solid waste can be heated evenly. Specifically, the driving mechanism includes a driving wheel that is in contact with the surface of the load-bearing steel ring 6 and a guide limit wheel that is connected to the side of the load-bearing steel ring 6. Both ends of the cracking furnace body 1 are It is connected with the bearing seat through the expansion joint 3 .

Since the medium frequency induction heating high temperature and high pressure is used to maintain the high temperature pyrolysis reaction, it does not need air, no combustion, and the high temperature pyrolysis is more complete and smoke-free. That is, the waste solid waste entering the high-temperature cracking chamber 104 is not burned but gasified and cracked, which improves the high-temperature thermal cracking efficiency; at the same time, reducing the amount of air used to burn the waste can reduce the combustion gas generated by combustion, thereby reducing combustion. Dust, the intermolecular cohesion in the organic components of the solid waste to be treated is reduced, and the energy required for high-temperature thermal cracking is reduced, thus improving the effect of high-temperature thermal cracking. In addition, due to the high pressure and no air circulation, the heat loss is very small, so the processing chamber maintains a high pyrolysis temperature during the normal and stable high temperature pyrolysis process, about 850℃～1200℃.

The combustibles (such as paper products, boards, wood chips, etc.) in the solid waste are gasified and carbonized (not burned), and gasified, carbonized and cracked in the cracking furnace body 1, and the generated gasification products are placed in reducing In the atmosphere, it is separated into heavy oil and combustible gas, and heat is released, and the organic matter in the solid waste is completely pyrolyzed and gasified at high temperature by using this heat. Since there is no stirring like in direct incinerators, no fly ash is produced. The gasification of the instantaneous cracking of harmful substances and gases, so that the dust content in the exhaust gas is extremely limited. After adding a dust removal device, it is enough to meet the strictest dust emission requirements.

Here, the high temperature of 2000℃～3000℃ is used to purify the gas pollutants, and the principle is to convert the harmful substances in the exhaust gas into inorganic harmless substances. The advantage of this method is that there is no need to separate the harmful gas from the main gas flow, and the harmful gas is directly and completely cracked into harmless substances, which can not only avoid secondary pollution, but also simplify the operation process.

Carbon monoxide produced by high temperature thermal cracking reacts with various hydrocarbons to produce carbon dioxide and water. The organic residue after high-temperature thermal cracking and the non-combustible substances in the solid waste (such as glass, metal, ceramics, etc.) are discharged from the slag discharge port 5 together.

Example 2

A garbage disposal system, comprising the intermediate frequency induction heating pyrolysis garbage disposal device as described in the above-mentioned embodiments, for example: the combustible oil and gas produced by it can generate electricity, and the residual heat in the process of the combustible oil and gas and intermediate frequency heating can be used to generate electricity;

Another example: the combustible oil and gas burns the organic harmful substances in it through sufficient combustion, pyrolyzed and gasified, and is discharged from the flue to pass through the high-temperature plasma zone to instantly completely pyrolyze and gasify the residual harmful substances, and finally discharge the harmless gas. Through the carbon dioxide purification and recovery device, the carbon dioxide is purified and recovered into carbon dioxide gas, which not only reduces the emission of carbon dioxide, but also creates good economic benefits;

Another example: the waste and solid waste that cannot be cracked can also obtain economic income by selecting metals and other substances by magnetic separation and re-selection.

With the aid of the intermediate frequency induction heating pyrolysis waste treatment device described in the above embodiment, a complete waste and solid waste treatment industry chain can be formed.

It should be noted that, in this technical solution, the present invention can perfectly change the waste and solid waste (belonging to small-scale processing equipment, the processing capacity is from 1 ton to 60 tons, suitable for remote mountainous areas, communities, counties, towns, villages, etc. It can be used for the treatment of hospital medical waste, oil field sludge, large hotels, non-recyclable waste plastics), reducing transportation costs and secondary pollution during transportation (in-situ treatment), for the resource treatment of solid waste, and manufacturing regeneration Fuel has undoubtedly become a promising solid waste treatment method. The use of high-pressure high-temperature thermal cracking devices is no longer simply to deal with and eliminate waste, but also focus on the recycling of energy and other resources in waste and solid waste to achieve environmental protection, The comprehensive effect of energy saving and resource regeneration cycle application.

Other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the disclosure at the specification and examples. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or techniques in the technical field not disclosed by the present disclosure . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the disclosure being indicated by the claims.

It is to be understood that the present disclosure is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (7)

1. An intermediate frequency induction heating pyrolysis waste treatment device, comprising a pyrolysis furnace body (1), a feeding mechanism (7) and a discharging mechanism (8), characterized in that the pyrolysis furnace body (1) is provided with a high temperature A cracking chamber (104), an intermediate frequency induction heating layer (103) is installed in the high temperature cracking chamber (104), which is used for intermediate frequency induction heating of garbage, and the cracking furnace body (1) is connected with a feeding mechanism (7) and The discharging mechanism (8) is used to realize the feeding and discharging actions respectively. 2 . The medium frequency induction heating pyrolysis garbage disposal device according to claim 1 , wherein the medium frequency induction heating layer ( 103 ) is provided with a thermal insulation layer ( 102 ) and a shell protection layer ( 101 ) in sequence on the outside. 3 . 3 . The medium frequency induction heating pyrolysis garbage disposal device according to claim 1 , wherein a sealing chamber ( 2 ) is provided at the feeding mechanism ( 7 ) and the discharging mechanism ( 8 ). 4 . 4. An intermediate frequency induction heating pyrolysis garbage disposal device according to claim 1, 2 or 3, characterized in that, the discharge mechanism (8) is connected with an oil and gas mechanism (4) and a slag discharge port (5) . 5. The medium frequency induction heating pyrolysis garbage disposal device according to claim 4, characterized in that a load-bearing steel ring (6) is fixed on the outside of the cracking furnace body (1), and the load-bearing steel ring (6) is driven by The mechanism is driven to rotate to drive the rotation of the cracking furnace body (1). 6 . The medium frequency induction heating pyrolysis garbage disposal device according to claim 5 , wherein the driving mechanism comprises a driving wheel in contact with the surface of the load-bearing steel ring ( 6 ) and a side surface of the load-bearing steel ring ( 6 ). 7 . Connected guide limit wheel. 7. A garbage disposal system, characterized in that it comprises the intermediate frequency induction heating pyrolysis garbage disposal device according to any one of claims 1 to 6.