CN109168212B - Solid waste microwave treatment equipment - Google Patents
Solid waste microwave treatment equipment Download PDFInfo
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- CN109168212B CN109168212B CN201810755429.XA CN201810755429A CN109168212B CN 109168212 B CN109168212 B CN 109168212B CN 201810755429 A CN201810755429 A CN 201810755429A CN 109168212 B CN109168212 B CN 109168212B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/80—Apparatus for specific applications
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Abstract
The invention discloses a solid waste microwave treatment device, which comprises a microwave energy generation system (1), a microwave energy feedback transmission system (2) and a microwave cavity (3) which are connected in sequence; the microwave cavity (3) is arranged on the frame (8); a special microwave composite insulating layer (4) is arranged in the microwave cavity (3), a special microwave crucible (5) is arranged in the special microwave composite insulating layer (4), and a special microwave heat storage carrier (6) is arranged in the special microwave crucible (5); the special microwave crucible (5) in the microwave cavity (3) is communicated with the flue gas pipeline combination (7). The microwave treatment equipment for the solid waste provided by the invention has the advantages of reasonable structural design, convenience in operation, high microwave utilization efficiency, capability of continuous feeding and discharging production, high material temperature rise temperature and short treatment time. Can be used for microwave treatment of various solid wastes and can solve the problem that the heat storage carriers are difficult to separate in the prior art.
Description
Technical Field
The invention relates to a solid waste treatment device, in particular to solid waste microwave treatment equipment.
Background
Traditional solid waste treatment equipment adopts natural gas and heavy oil to provide heat or mixed charcoal to improve the calorific value of solid waste and burns, need to blow into excessive oxygen during burning, and unit ton energy consumption is higher, and the flue gas volume that burns the production is great, has aggravated the processing burden of subsequent secondary combustion equipment, and equipment investment earlier stage is great.
The solid waste microwave treatment mode mainly utilizes microwaves to heat the heat storage carrier in the furnace, and the heated high-temperature heat storage carrier carries out temperature rise treatment on the solid waste through heat radiation and heat conduction. The existing microwave treatment equipment mainly adopts a form of mixing materials with a heat storage carrier to heat and raise the temperature, after the pyrolysis of the materials is finished, the heat storage carrier is difficult to separate, and meanwhile, the loss rate of the heat storage carrier is high; when the heat accumulation carrier high temperature after the separation mixes with the material, easily cause the material adhesion of feed inlet department to block up, when adopting low temperature to mix, the pyrolysis time of whole stove is long, and heat energy is unfavorable for recycle etc..
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provide the solid waste microwave treatment equipment which has reasonable structural design, can continuously feed and discharge materials for production, has high material temperature rise temperature, short treatment time and high microwave efficiency.
The technical scheme is as follows: in order to achieve the above purpose, the invention adopts the technical scheme that:
a solid waste microwave treatment device comprises a microwave energy generation system, a microwave energy feedback transmission system and a microwave cavity which are connected in sequence; the microwave cavity is arranged on the frame; a special microwave composite heat-insulating layer is arranged in the microwave cavity, a special microwave crucible is arranged in the special microwave composite heat-insulating layer, and a special microwave heat-storage carrier is arranged in the special microwave crucible; a special microwave crucible inside the microwave cavity is communicated with the flue gas pipeline;
the upper part of the microwave cavity is provided with a feed inlet communicated with the microwave special crucible; the bottom of the microwave cavity is provided with a discharge hole communicated with the microwave special crucible.
Preferably, in the above solid waste microwave treatment equipment, the stirring and discharging device is installed at the front end of the discharge port at the bottom of the microwave cavity.
Preferably, in the solid waste microwave treatment equipment, the microwave generating system comprises a single set or multiple sets of microwave power cabinets and a microwave output cabinet, wherein the power of the microwave energy generated by the single set of wave energy generating system is 15kW to 100kW, and the frequency is 915MHz or 2450 MHz.
As a preferred scheme, in the above solid waste microwave treatment equipment, the microwave energy-feeding transmission system comprises a three-terminal circulator, an E-surface 90-degree arc waveguide, a straight waveguide, an H-surface 90-degree arc waveguide, a three-screw-blending waveguide combination, an E-surface 45-degree arc waveguide, a BJ-9 power distributor and an expansion energy-feeding waveguide combination which are sequentially connected through a flange; wherein the three-terminal circulator is connected with the microwave generation system, and the expansion energy-feeding waveguide combination is connected with the microwave cavity.
Preferably, in the solid waste microwave treatment apparatus, the extended energy-feeding waveguide assembly includes a horn extended waveguide, a slot antenna waveguide, or a waveguide coaxial antenna.
As a preferred scheme, in the solid waste microwave treatment equipment, the micro-thermal cavity is a metal welded resonance cavity; the shape of the microwave cavity is square, round, hexagonal or octagonal; the microwave cavity is provided with an energy feedback port, and the energy feedback port is connected with an extended energy feedback waveguide combination of a microwave energy feedback transmission system through a flange;
the microwave cavity is provided with an overhaul oven door, a temperature measuring port and a nitrogen charging port. The oven door can be maintained to conveniently maintain each component in the microwave cavity, and the temperature measuring port detects the internal environment of the cavity and the outer wall of the crucible special for microwave, so that the components are prevented from being damaged by over-burning; the nitrogen filling opening fills nitrogen into the microwave cavity, so that the influence of air entering the special microwave crucible on the microwave treatment of the solid waste during the operation of the equipment is reduced. The top plate of the microwave cavity is provided with a feed inlet and a smoke outlet, so that the materials can be conveniently fed and the smoke can be conveniently discharged, and the microwave cavity can be square or round.
According to the solid waste microwave treatment equipment, the soft heat-insulation cotton material which does not absorb microwaves is adopted in the special microwave composite heat-insulation layer, and the hard light heat-insulation board which does not absorb microwaves is compounded to form the special microwave composite heat-insulation layer; the composite heat-insulating layer special for the microwave is supported on a bottom plate of the microwave cavity and is piled around the outside of the crucible special for the microwave, and the thickness of the piled up layer is 100-300 mm.
In the above solid waste microwave treatment apparatus, the special microwave crucible is formed by firing a refractory material having good wave permeability at high temperature, and the special microwave crucible is square or circular; the special microwave crucible is supported on a furnace plate of the microwave cavity;
according to the solid waste microwave treatment equipment, the flue gas pipeline combination is made of the steel pipe resistant to the high temperature of 800 ℃, and the flue gas pipeline combination is provided with the temperature measuring port, the pressure measuring port, the oxygen measuring port and the explosion venting port.
The temperature measuring port monitors the temperature of the flue gas to prevent the temperature of the flue gas from being too low, and the pressure measuring port is used for monitoring the pressure in the pipeline and the microwave cavity and is linked with a subsequent pumping and exhausting fan to ensure that the microwave cavity operates in a micro-negative pressure state; the oxygen measuring port monitors the oxygen content in the pipeline and the cavity, and effectively controls the oxygen content in the flue gas; the explosion venting port is used for carrying out emergent safe explosion venting when danger occurs.
Preferably, in the microwave treatment equipment for solid waste, the stirring and discharging device is composed of a driving mechanism and a rotating blade. The rotating blades are driven by the driving mechanism to rotate in the microwave oven chamber, and the cracked solid waste residual ash is scraped to move to the discharge port and is discharged from the discharge port. The driving mechanism can be a power source such as an electric motor, a hydraulic motor and the like, and can be connected with the rotating blade shaft through chain transmission, belt transmission and gear transmission.
Has the advantages that: compared with the prior art, the solid waste microwave treatment equipment provided by the invention has the following advantages:
1. the microwave treatment equipment for the solid waste provided by the invention has the advantages of reasonable structural design and convenience in operation, can be used for continuous feeding and discharging production, and solves the problem that part of the solid waste cannot be heated without absorbing microwaves.
2. The microwave treatment equipment for the solid waste does not cause secondary pollution to the environment, and has the advantages of high material temperature rise speed and short treatment time.
3. The microwave treatment equipment for the solid waste provided by the invention has the working temperature of 1000 ℃ at most, and meets the requirement of microwave treatment of most types of solid waste.
4. The solid waste treatment equipment provided by the invention has good sealing performance at all positions, can effectively control oxygen to enter the cavity, and reduces the amount of flue gas generated during solid waste treatment.
5. According to the solid waste treatment equipment provided by the invention, the microwave is absorbed by the heat carrier to raise the temperature after penetrating through the material, so that the microwave can directly act on the partially carbonized solid waste material to quickly heat, raise the temperature and carbonize the material. The heat storage carrier is fixed in the crucible, is not discharged along with the material, can continuously heat the material and increase the temperature, and effectively reduces the energy consumption. And the technical problems that materials and heat storage carriers are mixed, heated and heated in the prior art, and the heat storage carriers are difficult to separate can be solved.
6. The heat radiated by the heat storage carrier is conducted to the special microwave crucible through the solid waste, and is not directly radiated to the special microwave crucible, so that the temperature rise of the special microwave crucible is reduced, the heat preservation and insulation treatment is convenient, and the use cost is reduced.
Drawings
Fig. 1 is a schematic structural view of a solid waste microwave treatment apparatus provided by the present invention.
Detailed Description
The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.
As shown in fig. 1, a solid waste microwave treatment device comprises a microwave energy generation system 1, a microwave energy feedback transmission system 2 and a microwave cavity 3 which are connected in sequence; the microwave cavity 3 is arranged on the frame 8; a special microwave composite insulating layer 4 is arranged in the microwave cavity 3, a special microwave crucible 5 is arranged in the special microwave composite insulating layer 4, and a special microwave heat storage carrier 6 is arranged in the special microwave crucible 5; a special microwave crucible 5 inside the microwave cavity 3 is communicated with a flue gas pipeline combination 7;
the upper part of the microwave cavity 3 is provided with a feed inlet 3-1 communicated with a microwave special crucible 5; the bottom of the microwave cavity 3 is provided with a discharge port 3-2 communicated with a microwave special crucible 5. The front end of a discharge port 3-2 at the bottom of the microwave cavity 3 is provided with a stirring discharge device 9.
In the solid waste microwave treatment equipment, the microwave generating system 1 consists of a single set or a plurality of sets of microwave power cabinets and microwave output cabinets, wherein the power of the microwave energy generated by the single set of wave energy generating system is 15kW-100kW, and the frequency is 915MHz or 2450 MHz.
In the above solid waste microwave treatment equipment, the microwave energy-feedback transmission system 2 comprises a three-terminal circulator, an E-surface 90-degree arc waveguide, a straight waveguide, an H-surface 90-degree arc waveguide, a three-screw-deploying waveguide combination, an E-surface 45-degree arc waveguide, a BJ-9 power distributor and an extended energy-feedback waveguide combination which are sequentially connected through a flange; wherein the three-terminal circulator is connected with the microwave generating system 1, and the expansion energy-feeding waveguide combination is connected with the microwave cavity 3. The extension energy-feeding waveguide combination comprises a horn extension waveguide, a split antenna waveguide or a waveguide coaxial antenna. The combination of the three-terminal circulator and the three-screw waveguide can effectively reduce the reflection of microwave energy, thereby improving the utilization efficiency of the microwave energy and reducing the damage of the reflected microwave energy to a microwave generating system.
In the solid waste microwave treatment equipment, the micro thermal cavity 3 is a metal welded resonant cavity; the shape of the microwave cavity 3 is square, round, hexagonal or octagonal; an energy feedback port is arranged on the microwave cavity 3 and is connected with the extended energy feedback waveguide combination of the microwave energy feedback transmission system 2 through a flange;
the microwave cavity 3 is provided with an overhaul oven door, a temperature measuring port and a nitrogen charging port. Energy feeding ports are arranged on four surfaces of the furnace body of the microwave cavity 3; the access doors are arranged on the two sides and are symmetrically arranged, so that the conditions of the energy feedback port sealing plate and the structure in the furnace can be conveniently checked; temperature measuring holes are formed in the remaining two surfaces, so that the environment in the cavity and the temperature of the outer wall of the crucible 5 special for microwave can be monitored. A circular feed inlet and a smoke outlet are arranged on the top plate of the microwave cavity. The bottom of the microwave cavity 3 is composed of a furnace plate and a bottom plate which are made of stainless steel 310S, and the bottom plate is provided with a discharge hole, so that the discharge of the solid residual ash after treatment is facilitated. The nitrogen filling port is arranged at the temperature measuring pipe to fill nitrogen into the microwave cavity 3, so that the influence of air entering the special microwave crucible 5 on the microwave treatment of the medical solid waste during the operation of the equipment is reduced.
In this embodiment, the special composite heat-insulating layer 4 for microwave is formed by combining the ceramic fiber cotton which is not wave-absorbing with the ceramic fiber board which is externally adopted, so that the heat can be effectively isolated from being conducted and radiated to the wall of the microwave cavity, the heat-insulating material has light weight, and the stacking is convenient. The special composite heat-insulating layer for the microwave is supported on the bottom plate of the microwave cavity and is stacked around the outside of the special crucible for the microwave, the stacking thickness is 200mm, the heat conduction and radiation of the special crucible for the microwave are effectively isolated, and the temperature of the microwave cavity is ensured to be less than or equal to 60 ℃.
In the embodiment, the crucible 5 special for microwave is round and is made of heavy corundum refractory material through high-temperature firing, the working temperature can reach 1200 ℃, and the wave permeability is good. The crucible surface of the special microwave crucible 5 is compact, so that the invasion of smoke and other toxic and harmful substances can be prevented, and the smoke and the other toxic and harmful substances can be prevented from permeating into the crucible. The special microwave crucible 5 is supported on the oven plate of the microwave cavity 3, is arranged inside the special microwave composite heat-insulating layer 4, has certain structural strength and good thermal vibration performance, and can meet the working requirement of cold-hot alternate continuous production.
In this embodiment, the heat storage carrier 6 dedicated for microwave is formed by firing a silicon carbide heating material with good wave absorption, and the maximum temperature rise can reach 1200 ℃. The upper part of the heat carrier is designed to be conical, which is favorable for forcibly distributing materials entering the furnace; under the condition of ensuring the complete absorption of microwave energy, the hollow design is adopted, the weight of a heat carrier is reduced, and the installation and the fixation are convenient. The special heat storage carrier 6 for microwaves is arranged on a furnace plate of the microwave cavity 3, and is insulated from the furnace plate by adopting a corundum refractory material, so that the temperature of the furnace plate is prevented from being overhigh, the special heat storage carrier 6 for microwaves is arranged at the central part of the special crucible 5 for microwaves, heat can be uniformly radiated to the periphery at high temperature, the temperature of a hearth can reach 500-1000 ℃, the pyrolysis reaction is effectively carried out on medical solid wastes in the special crucible 5 for microwaves, and the content of dioxin in smoke is greatly reduced.
In this embodiment, the flue gas pipeline assembly 7 is made of a 310S high temperature resistant stainless steel pipe, the working temperature resistance is not less than 800 ℃, and the flue gas pipeline assembly 7 is provided with 1 temperature measuring port, 1 pressure measuring port, 1 oxygen measuring port and 1 explosion venting port. The temperature measuring port monitors the temperature of the flue gas to prevent the temperature of the flue gas from being too low, and the pressure measuring port is used for monitoring the pressure in the pipeline and the furnace cavity and is linked with a subsequent pumping fan to ensure that the interior of the furnace cavity operates in a micro-negative pressure state of-50 Pa; the oxygen measuring port monitors the oxygen content in the pipeline and the cavity, controls the oxygen content to be below 2 percent, effectively controls the oxygen content in the flue gas and the furnace, inhibits the generation of dioxin, and simultaneously prevents the danger of flue gas explosion; the explosion venting port is mainly used for carrying out emergent safe explosion venting when danger occurs, and preventing a furnace door combination from being opened or a furnace cavity from being broken and damaging people by broken objects.
In this embodiment, the frame 8 is made of H-shaped steel by welding, and meets the bearing requirements of the whole equipment and materials.
In this embodiment, the stirring and discharging device 9 is driven by a variable frequency explosion-proof motor, and the variable frequency motor drives the rotating blades to rotate in the microwave oven chamber 3 after being decelerated by a speed reducer and a large belt pulley, so as to scrape the carbon residue of the pyrolyzed medical waste to move towards the discharge port 3-2 and discharge the carbon residue from the discharge port 3-2.
In this embodiment, the solid waste is medical solid waste, but is not limited to this material.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The solid waste microwave treatment equipment is characterized by comprising a microwave energy generation system (1), a microwave energy feedback transmission system (2) and a microwave cavity (3) which are sequentially connected; the microwave cavity (3) is arranged on the frame (8); a special microwave composite insulating layer (4) is arranged in the microwave cavity (3), a special microwave crucible (5) is arranged in the special microwave composite insulating layer (4), and a special microwave heat storage carrier (6) is arranged in the special microwave crucible (5); a special microwave crucible (5) in the microwave cavity (3) is communicated with a flue gas pipeline combination (7);
the upper part of the microwave cavity (3) is provided with a feed inlet (3-1) communicated with the microwave special crucible (5); the bottom of the microwave cavity (3) is provided with a discharge hole (3-2) communicated with the microwave special crucible (5);
the microwave energy-feeding transmission system (2) comprises a three-terminal circulator, an E-surface 90-degree arc waveguide, a straight waveguide, an H-surface 90-degree arc waveguide, a three-screw-allocated waveguide combination, an E-surface 45-degree arc waveguide, a BJ-9 power distributor and an expansion energy-feeding waveguide combination which are sequentially connected through flanges; wherein the three-terminal circulator is connected with the microwave generating system (1), and the expansion energy-feeding waveguide combination is connected with the microwave cavity (3);
the extension energy-feeding waveguide combination comprises a horn extension waveguide, a split antenna waveguide or a waveguide coaxial antenna;
the special composite heat-insulating layer (4) for the microwaves is formed by compounding soft heat-insulating cotton materials which are adopted inside and do not absorb the microwaves and light heat-insulating plates which are adopted outside and do not absorb the microwaves; the composite heat-insulating layer (4) special for the microwave is supported on a bottom plate of the microwave cavity (3) and is stacked around the outside of the crucible (5) special for the microwave, and the stacking thickness is 100-300 mm.
2. The microwave treatment equipment for solid waste according to claim 1, wherein the front end of the bottom discharge port (3-2) of the microwave cavity (3) is provided with a stirring discharge device (9).
3. The solid waste microwave treatment apparatus according to claim 1, characterized in that the microwave generating system (1) is composed of a single or multiple sets of microwave power cabinet and microwave output cabinet, wherein the single wave energy generating system generates microwave energy with power of 15kW-100kW and frequency of 915MHz or 2450 MHz.
4. The microwave treatment equipment for solid waste according to claim 1, wherein the microwave cavity (3) is a metal welded resonant cavity; the shape of the microwave cavity (3) is square, round, hexagonal or octagonal; an energy feedback port is arranged on the microwave cavity (3), and the energy feedback port is connected with an extended energy feedback waveguide combination of the microwave energy feedback transmission system (2) through a flange;
the microwave cavity (3) is provided with an overhaul oven door, a temperature measuring port and a nitrogen charging port.
5. The microwave treatment equipment for the solid waste according to claim 1, wherein the special microwave crucible (5) is formed by firing a refractory material with good wave permeability at high temperature, and the special microwave crucible (5) is square or round; the special microwave crucible (5) is supported on a furnace plate of the microwave cavity (3).
6. The microwave treatment equipment for the solid waste according to claim 1, wherein the flue gas pipeline combination (7) is made of a steel pipe with the high temperature of 800 ℃, and a temperature measuring port, a pressure measuring port, an oxygen measuring port and an explosion venting port are arranged on the flue gas pipeline combination (7).
7. The microwave treatment equipment for solid waste according to claim 2, wherein the agitation discharging device (9) is composed of a driving mechanism and a rotating blade.
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| CN201810755429.XA CN109168212B (en) | 2018-07-11 | 2018-07-11 | Solid waste microwave treatment equipment |
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| CN201810755429.XA CN109168212B (en) | 2018-07-11 | 2018-07-11 | Solid waste microwave treatment equipment |
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| CN109168212B true CN109168212B (en) | 2020-08-04 |
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| CN111790729A (en) * | 2020-07-15 | 2020-10-20 | 成都劢可为科技有限公司 | Microwave treatment device capable of uniformly cracking solid waste |
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| CN104651805B (en) * | 2015-02-04 | 2017-05-03 | 昆明理工大学 | Ultrasonic atomizing microwave tube furnace and application thereof |
| CN206240095U (en) * | 2016-08-29 | 2017-06-13 | 昆明理工大学 | A kind of device for preparing ultrathin composite powder |
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| CN102946655B (en) * | 2012-11-13 | 2015-06-03 | 中国石油大学(北京) | Microwave heating device capable of being continuously operated and resisting high temperature and high pressure and application thereof |
| CN104194809A (en) * | 2014-08-25 | 2014-12-10 | 湖南省中晟热能科技有限公司 | Continuous microwave-heating cracking equipment for biomass and organic wastes |
| CN204836640U (en) * | 2015-06-24 | 2015-12-02 | 南京三乐微波技术发展有限公司 | High -power microwave high temperature heating device |
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Effective date of registration: 20200214 Address after: No.128 Yongfeng street, Pukou District, Nanjing City, Jiangsu Province Applicant after: Sanle Microwave Technology Development Co., Ltd, Nanjing Applicant after: Nanjing Sanle Group Co., Ltd. Applicant after: Inner Mongolia InBev Environmental Protection Technology Co., Ltd Address before: 210044 No. 128, Yongfeng street, Pukou District, Jiangsu, Nanjing Applicant before: Sanle Microwave Technology Development Co., Ltd, Nanjing Applicant before: Nanjing Sanle Group Co., Ltd. |
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