CN210826054U - Meshing roller type pyrolysis reactor - Google Patents

Abstract

The utility model discloses a meshing roller type pyrolysis reactor, which comprises a closed container, wherein a feed inlet, a solid outlet and a gas outlet are arranged on the closed container, a driving compression roller and a driven compression roller which are meshed with each other are arranged in the closed container in a rotating way, and materials enter from the feed inlet and fall at the meshing part of the driving compression roller and the driven compression roller; the roller shaft of initiative compression roller with driven compression roller is hollow structure, and the inside packing of roller shaft has the heat conduction material, and the tip of roller shaft is provided with the high temperature electrothermal tube. The utility model discloses an engagement roller-type pyrolysis reactor can carry out thermal decomposition to all kinds of rubbish more fully high-efficiently.

Description

Meshing roller type pyrolysis reactor

Technical Field

The utility model belongs to the technical field of rubbish utilization and innocent treatment equipment, especially, relate to an engagement roller type pyrolysis reactor.

Background

With the increase of population and the development of economy, more and more cities face the current situation of the domestic garbage city, which becomes a global trend. Domestic waste is an adjunct to urban development, producing billions of tons of waste each year as required by cities and human operations. On one hand, the amount of the garbage is continuously increased, on the other hand, the environmental protection requirement is gradually strict, if no efficient cleaning treatment means is available, the excessive garbage becomes the primary threat of the life health of people, and the problem which needs to be solved in the future for developing and cleaning cities is solved.

Municipal solid waste can be mainly classified into three types: organic kitchen garbage, toilet paper, fruit shells and other degradable garbage, waste paper, plastic, glass, metal and other recyclable garbage, and battery, lamp tube, overdue medicine and other toxic and harmful garbage. Because domestic household garbage is not classified in place, various types of garbage are difficult to classify and treat by adopting a proper method. At present, the common methods for treating the domestic garbage include sanitary landfill, composting and incineration. At present, most of domestic garbage is treated in a landfill mode, and the method has the advantages of simple operation and wide adaptability, but also easily causes the problems of underground water pollution, land resource shortage, greenhouse gas emission and the like. The composting treatment is a method for decomposing, decomposing and converting organic matters in the domestic garbage into stable soil similar to rotten plants under the condition of manual control by virtue of the biochemical action of microorganisms, but the prior art is difficult to treat harmful substances such as chlorine, benzene and heavy metals contained in the domestic garbage, and cannot be directly used as fertilizers. The burning mode can kill the germs in the domestic garbage, has good volume reduction and weight reduction effects, can utilize the burning energy of the domestic garbage to generate electricity and supply heat, but can generate pollutants such as SOx, NOx, HCl, dioxin, polycyclic aromatic hydrocarbon and the like in the burning process to easily cause secondary pollution.

In view of the severe situation of the city enclosed by domestic garbage, in recent years, more and more scholars are engaged in the research of novel garbage treatment modes, such as biochemical treatment or pyrolysis treatment. The method for treating the municipal domestic waste by adopting the pyrolysis technology has the advantages of wide raw material application, short treatment period, high conversion efficiency and the like, can inhibit the generation of harmful substances such as dioxin and the like, and can convert the components of the municipal domestic waste into gas-liquid fuel convenient to utilize. At present, pyrolysis technologies mainly based on coal, biomass and other raw materials are mature, but the domestic garbage pyrolysis technology needs to be further researched and optimized.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an engagement roller type pyrolysis reactor for more abundant, efficient carry out thermal decomposition to all kinds of rubbish.

In order to achieve the purpose, the technical scheme adopted by the utility model is that the meshing roller type pyrolysis reactor comprises a closed container, wherein a feed inlet, a solid outlet and a gas outlet are arranged on the closed container, a driving compression roller and a driven compression roller which are meshed with each other are rotationally arranged in the closed container, and a material enters from the feed inlet and falls at the meshing position of the driving compression roller and the driven compression roller; the roller shaft of initiative compression roller with driven compression roller is hollow structure, and the inside packing of roller shaft has the heat conduction material, and the tip of roller shaft is provided with the high temperature electrothermal tube.

The technical proposal of the utility model is also characterized in that,

the feed inlet and the gas outlet are positioned at the top of the sealed container, and the solid outlet is positioned at the bottom of the sealed container.

The driving compression roller and the driven compression roller are arranged side by side.

The roll diameters of the driving press roll and the driven press roll are 200mm-600 mm.

The modulus of the surface gear teeth of the driving compression roller and the driven compression roller is 3mm-14 mm.

And the roll shafts of the driving compression roller and the driven compression roller are rotatably arranged in the closed container through bearings.

The driving device is a motor, and a roller shaft of the driving compression roller is connected with a rotating shaft of the motor through a speed reducer.

And a pair of meshed gears is arranged on the roll shafts of the driving compression roller and the driven compression roller.

The bottom of the closed container is of a conical structure, and the solid outlets are located at the bottom of the conical structure.

The parts of the driving compression roller and the driven compression roller, which are contacted with the closed container, are sealed by high-temperature-resistant filler.

The conductive material is high-temperature molten salt.

The utility model has the advantages that: the utility model discloses an engagement roller formula pyrolysis reactor can make the rubbish fragment be fully torn after having forced the meshing through high temperature initiative compression roller and driven compression roller and rolling, and the pyrolysis that heaies up rapidly, the processing system of the next-level can be discharged into to the pyrolysis gas and the solid of production handles, and its concrete advantage is: (1) the heat transfer efficiency is high: the garbage fragments are forcedly meshed and rolled by the two high-temperature driving compression rollers and the driven compression rollers, so that the high-temperature roller surfaces are fully contacted with the garbage, the heat exchange is strong, and the garbage fragments are rapidly heated and decomposed; (2) reducing the impact wear of the device: because the forced rolling heat transfer is carried out by the pressure of the compression roller, a hot carrier solid which is easy to wear is not needed, and the collision wear between the garbage and a metal component of the device is reduced; (3) the pyrolysis reaction condition is convenient to regulate and control: the required parameters such as pyrolysis reaction temperature, reaction time, heat transfer area and the like can be conveniently adjusted by controlling the current flowing through the electric heating pipe and the rotating speed of the compression roller and replacing gear compression rollers with different modules and sizes, so that the reaction conditions are rapidly adjusted according to garbage with different sources to be suitable for the pyrolysis reaction of different garbage, and the high-efficiency conversion is realized; (4) the adaptability to garbage sources is wide: the forced rolling between the rollers generates larger pressure, and the garbage is continuously torn and crushed in the pyrolysis process through the insection, so that the size of garbage fragments does not need to be too small, the power consumption of the crusher is reduced, and meanwhile, the crusher can better adapt to different types of garbage; (5) the transmission is stable: the simple support shaft is adopted, so that the transmission stability is high; meanwhile, because the roller compaction is adopted, the heat exchange of the material and the wall surface in high-speed contact is not relied on, the rotating speed is not required to be too high, and the relative stability is higher; (6) convenient, the heat transfer volume is big, the heat transfer is effectual of accuse temperature: the heat exchanger which is electrically heated but not used for high-temperature media is used, so that the temperature in the reactor can be regulated and controlled more accurately and quickly; meanwhile, the current is used for heating the heat-conducting medium so as to indirectly heat the roller body, and the device has the characteristics of uniform temperature distribution, large heat storage capacity, large buffer capacity for dealing with the fluctuation of garbage components and the like, and has good heat exchange effect; (7) compact structure, easily expand the handling capacity: the roller surface heat exchange is used, an external heat carrier is not needed, the related auxiliary devices are avoided, and the space utilization rate is high. Meanwhile, the length of the roller is easily increased by increasing the length of the reactor; (8) clean, safe, the popularization of being convenient for: the electric heating is directly used, the traditional heat supply mode is not adopted, the efficiency is reduced from the energy utilization aspect, but the pyrolysis reactor can be separated from the combustion reaction process which is huge, seriously polluted and more dangerous by adopting the electric heating, the miniaturization and the cleanness of the pyrolysis reaction device are facilitated, the device is safer, and the device can be suitable for urban communities with stricter environmental protection requirements; (9) reduce the refuse treatment cost, promote the rubbish utilization efficiency: and respectively discharging the solid residue, the bio-oil and the non-condensable pyrolysis gas into a next-stage system for collection and storage, and transporting to a specified place for corresponding treatment such as combustion power generation and the like. Can subtract heavy decrement to rubbish on the spot in urban community, only need carry the pyrolysis product that energy density is high, small, remove the collection storage place of rubbish from, reduce the treatment cost of rubbish. Meanwhile, the solid and gas products collected after pyrolysis are used for combustion power generation, and the generated electric energy is supplied to the high-temperature electric heating tube for demand, so that the overall utilization efficiency of the garbage is further improved.

Drawings

FIG. 1 is a schematic structural view of an intermeshing roll pyrolysis reactor of the present invention;

FIG. 2 is a schematic view of the engagement of the driving nip roller and the driven nip roller of FIG. 1;

fig. 3 is a schematic structural view of the driving pressure roller and the driven pressure roller of fig. 1.

In the figure: 1. the device comprises a gas outlet, 2 feed inlets, 3 a closed container, 4 driven compression rollers, 5 high-temperature electric heating tubes, 6 driving compression rollers, 7 solid outlets, 8 speed reducers and 9 gears.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, the meshing roller pyrolysis reactor of the present invention comprises a closed container 3, wherein the closed container 3 is provided with a feed inlet 2, a solid outlet 7 and a gas outlet 1, the closed container 3 is rotatably provided with a driving compression roller 6 and a driving compression roller 4 which are meshed with each other, the driving compression roller 6 is connected with a rotating shaft of an external motor through a speed reducer 8, and garbage enters from the feed inlet 2 and falls at a meshing position of the driving compression roller 6 and the driving compression roller 4; the roller shafts of the driving compression roller 6 and the driving compression roller 4 are both of a hollow structure, heat conduction materials are filled in the roller shafts, the end parts of the roller shafts are provided with high-temperature electric heating tubes 5, and the high-temperature electric heating tubes 5 are electrically connected with an external power supply system.

The principle is as follows: after the external power supply system supplies power to the high-temperature electric heating tube 5, the heat conducting material in the roll shaft is rapidly heated, so that the temperatures of the driving compression roller 6 and the driving compression roller 4 are increased; garbage is input from the feed inlet 2 and falls to the meshing position of the driving compression roller 6 and the driving compression roller 4, and is subjected to full thermal decomposition under the rolling pressure of a plurality of gear teeth on the driving compression roller 6 and the driving compression roller 4 to obtain gas and solid; the solid can be directly recovered, and the gas is sequentially treated in a gas-solid separation system and a pyrolysis gas condensation system of the next stage to obtain combustible gas and liquid.

As shown in fig. 1, in an intermeshing roll pyrolysis reactor of the present invention, a feed port 2 and a gas outlet 1 may preferably be provided at the top of a sealed vessel 3, and a solid outlet 7 is provided at the bottom of the sealed vessel.

As shown in fig. 1, in an intermeshing roll pyrolysis reactor of the present invention, a driving pressure roll 6 and a driving pressure roll 4 are arranged side by side; the roll diameters of the driving press roll 6 and the driving press roll 4 are 200mm-600 mm; the modulus of the gear teeth on the surfaces of the driving pressing roller 6 and the driving pressing roller 4 is 3mm-14 mm.

As shown in fig. 1, in the intermeshing roll pyrolysis reactor of the present invention, as a preferred mode, the conductive material is a high temperature molten salt.

Referring to fig. 2, in an engaged roller type pyrolysis reactor of the present invention, as a preferable mode, the rollers of the driving pressure roller 6 and the driving pressure roller 4 are rotatably disposed in the hermetic container 3 through bearings.

As shown in fig. 3, in the pyrolysis reactor of the present invention, as a preferable mode, a pair of gears 9 engaged with each other is provided on the shafts of the driving pressure roller 6 and the driving pressure roller 4, and the engaging movement between the driving pressure roller 6 and the driving pressure roller 4 can be preferably realized by the pair of gears 9.

As shown in FIG. 1, in the pyrolysis reactor of the present invention, the bottom of the closed container 3 is a cone-shaped solid outlet 7 at the bottom of the uniform cone structure, which ensures that the solid material flows out completely as much as possible.

As shown in fig. 1, in the meshing roll type pyrolysis reactor of the present invention, the portions of the driving pressure roller 6 and the driving pressure roller 4 contacting the closed container 3 are sealed by the high temperature resistant packing, so that the closed container 3 can be prevented from being damaged due to the over-high temperature.

Claims (10)

1. The meshing roller type pyrolysis reactor is characterized by comprising a closed container (3), wherein a feed inlet (2), a solid outlet (7) and a gas outlet (1) are formed in the closed container (3), a driving compression roller (6) and a driven compression roller (4) which are meshed with each other are rotationally arranged in the closed container (3), and garbage enters from the feed inlet (2) and falls at the meshing position of the driving compression roller (6) and the driven compression roller (4); the roller shafts of the driving compression roller (6) and the driven compression roller (4) are both of a hollow structure, heat conduction materials are filled in the roller shafts, and high-temperature electric heating tubes (5) are arranged at the end parts of the roller shafts.

2. An intermeshing roll pyrolysis reactor according to claim 1 wherein the feed inlet (2) and the gas outlet (1) are located at the top of the closed vessel (3) and the solids outlet (7) is located at the bottom of the closed vessel.

3. Meshing roll pyrolysis reactor according to claim 1, characterized in that the driving pressure roll (6) and the driven pressure roll (4) are arranged side by side.

4. Meshing roll pyrolysis reactor according to claim 1, characterized in that the roll diameter of the driving press roll (6) and the driven press roll (4) is 200-600 mm.

5. Meshing roll pyrolysis reactor according to claim 1, characterized in that the modulus of the surface teeth of the driving pressure roll (6) and the driven pressure roll (4) is 3mm-14 mm.

6. An intermeshing roll pyrolysis reactor according to claim 1 wherein the rolls of the driving pressure roll (6) and the driven pressure roll (4) are rotatably arranged in the closed vessel (3) by means of bearings.

7. A meshing roll pyrolysis reactor according to claim 1, characterized in that the rolls of the driving press roll (6) and the driven press roll (4) are provided with a pair of meshing gears (9).

8. An intermeshing roll pyrolysis reactor according to claim 2 wherein the closed vessel (3) has a conical configuration at its bottom and the solids outlet (7) is located at the lowermost end of the conical configuration.

9. An intermeshing roll pyrolysis reactor as claimed in claim 1 wherein the parts of the driving pressure roll (6) and the driven pressure roll (4) which are in contact with the closed vessel are sealed by a refractory packing.

10. An intermeshing roll pyrolysis reactor as claimed in claim 1 wherein the heat conductive material is a high temperature molten salt.

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