Environment-friendly machine-made charcoal carbonization device with waste heat recovery function

Abstract

The invention belongs to the technical field of machine-made charcoal carbonization processing, and particularly relates to an environment-friendly machine-made charcoal carbonization device with a waste heat recovery function. The environment-friendly machine-made charcoal carbonization device comprises a carbonization furnace body, a flue gas purification mechanism and a heat exchanger, a combustion chamber is formed at the bottom of the carbonization furnace body, a carbonization chamber is formed above the combustion chamber, and a smoke exhaust pipe is arranged at the top of the carbonization furnace body; the flue gas purification mechanism is located on one side of the carbonization furnace body and is used for separating particulate matters mixed in flue gas exhausted from the smoke exhaust pipe, a heat recovery mechanism is arranged in the flue gas purification mechanism, and the heat recovery mechanism is used for recovering heat dissipated from hot flue gas which is being purified by the flue gas purification mechanism; a heat medium pipe inlet of the heat exchanger is communicated with an exhaust pipe of the flue gas purifier; when high-temperature flue gas flows in the flue gas purification mechanism to intercept and separate particles, a large amount of heat cannot be lost, and unnecessary waste is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of machine-made charcoal carbonization processing, and in particular relates to an environmentally friendly machine-made charcoal carbonization device with a waste heat recovery function. Background Art

[0002] As an alternative to traditional charcoal, machine-made charcoal has many advantages, such as long burning time, high calorific value, no smoke, no explosion, and environmental protection. Machine-made charcoal is generally made of sawdust. The process mainly involves molding the sawdust under high temperature and high pressure in a machine, and then sending it into a carbonization furnace for carbonization. Carbonization generally adopts the dry distillation method, that is, placing the semi-finished machine-made charcoal in a carbonization furnace and heating it to decompose it under air-tight conditions.

[0003] Since a large amount of hot flue gas is generated during the carbonization process of the machine-made charcoal in the carbonization furnace, the waste heat in the flue gas generated during the operation of the carbonization furnace can be recovered and utilized; however, the existing carbonization devices recover the waste heat in the flue gas by directly connecting the exhaust pipe to the heat exchanger through the flue gas duct to realize the waste heat recovery of the hot flue gas;

[0004] Since the flue gas discharged from the smoke exhaust pipe is mixed with impurities such as tar and particulate matter, if the particulate matter mixed in the flue gas is not separated and directly passed into the heat exchanger, it will not only damage the heat exchanger, but also easily cause a large amount of particulate matter to accumulate in the heat exchanger, which will affect the normal operation of the heat exchanger; but if the existing flue gas purification system is installed directly at the smoke exhaust pipe, although it can separate and intercept the particulate matter mixed in the flue gas, it will easily cause a large amount of heat in the hot flue gas to be lost in the flue gas purification system, which will affect the carbonization device's recovery effect on the waste heat in the discharged flue gas. Summary of the invention

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is an environmentally friendly carbonization device with waste heat recovery function, comprising a carbonization furnace body, a flue gas purification mechanism and a heat exchanger;

[0007] A carbonization furnace body, wherein a combustion chamber is formed at the bottom of the carbonization furnace body, a carbonization chamber is formed above the combustion chamber, and a smoke exhaust pipe is provided at the top of the carbonization furnace body;

[0008] A flue gas purification mechanism, the flue gas purification mechanism is located on one side of the carbonization furnace body and is used to separate particulate matter mixed in the flue gas discharged from the exhaust pipe. A heat recovery mechanism is provided in the flue gas purification mechanism and is used to recover heat emitted from the flue gas being purified by the flue gas purification mechanism;

[0009] A heat exchanger, wherein a heat medium inlet of the heat exchanger is connected to an exhaust pipe of a flue gas purifier.

[0010] Furthermore, the flue gas purification mechanism includes a supporting base, a purification box, a smoke inlet pipe, a filter, an exhaust pipe and a waste discharge duct. The supporting base is fixedly installed on one side of the carbonization furnace body, and the top of the supporting base is fixedly supported by an oil purification box. The lower part of the outer ring surface of the purification box is connected to the smoke exhaust pipe through the smoke inlet pipe, and the top is connected to the oil exhaust pipe. A double-layer filter is installed in the purification box, and the mesh diameter of the lower filter is larger than the mesh diameter of the upper filter. The arc-shaped bottom of the purification box is connected to the waste discharge duct.

[0011] Furthermore, the heat recovery mechanism includes a heat insulation component and a conversion component, the heat insulation component includes a heat insulation cover, an air intake pipe and a heat exhaust pipe, the heat insulation cover sealing cover is combined with the outside of the purification box, and a heating cavity is formed between the heat insulation cover and the purification box, the top of the heating cavity is connected to the air intake pipe, and the bottom thereof is staggeredly connected to the air intake pipe with a heat exhaust pipe, and the other end of the heat exhaust pipe is connected to the combustion chamber through an air distribution pipe.

[0012] Furthermore, the conversion assembly includes a cavity ring, a liquid injection tube, a connecting swivel, a sealing ring, a guide square tube, a confluence main pipe and a liquid discharge conduit. A cavity ring with a cavity structure inside is fixed inside the purification box and below the filter screen. An annular groove is provided on the inner ring surface of the cavity ring, and a connecting swivel with an open inner and outer ring surfaces is rotatably arranged in the annular groove. The outer ring surface of the connecting swivel is rotatably sealed and attached to the inner cavity wall of the cavity ring through the sealing ring, and the inner ring surface of the connecting swivel is also The sealing ring is sealed and rotated to fit onto the inner ring surface of the cavity ring, and an annular flow cavity connected to the internal cavity of the cavity ring is formed between the connecting swivel and the sealing ring. A plurality of guide square tubes made of heat-conducting material are installed in a circular array on the inner ring surface of the connecting swivel, and one end of the guide square tube is connected to the annular flow cavity, and the other end of the guide square tube is connected to a confluence main pipe vertically installed in the middle of the filter screen, and the top end of the confluence main pipe extends out of the purification box and the heat insulation cover through a drainage duct.

[0013] Furthermore, the conversion assembly also includes a drive shaft and a cleaning brush. The drive shaft is vertically installed in the purification box, and its bottom end extends out of the purification box through a bearing and is connected to a fixed servo motor output shaft, and the top end of the drive shaft is connected to the bottom pipe opening of the confluence main pipe. A cleaning brush is installed at the pipe wall where the guide square pipe is connected to the filter screen, and the cleaning brush is in contact with the lower surface of the filter screen, and the top pipe opening of the confluence main pipe is connected to the drainage duct through a bearing.

[0014] Furthermore, an electric telescopic rod is vertically fixed to the bottom of the confluence main pipe, and a supporting mesh plate is installed on the top end surface of the piston rod of the electric telescopic rod, and the supporting mesh plate is slidably and sealingly fitted into the confluence main pipe, and a plurality of supporting strips are vertically installed on the upper surface of the supporting mesh plate, and the plurality of supporting strips are respectively located between two adjacent guide square tubes connected to the inner tube wall of the confluence main pipe, and a plurality of spray holes are opened on the circumference of the tube wall of the confluence main pipe, and the plurality of spray holes are located on the upper surface of the filter net, and a plurality of fitting tubes are installed on the upper end surfaces of the plurality of supporting strips, and the tube wall of the fitting tube is slidably and sealingly fitted to the inner tube wall of the confluence main pipe, and the fitting tube is in slidably and fitting contact with the plurality of spray holes.

[0015] Furthermore, a plurality of arc-shaped scraping strips are attached to the inner circumferential array of the arc-shaped bottom of the purification box, and the ends of the plurality of arc-shaped scraping strips close to each other are connected to the driving shaft.

[0016] Furthermore, the heat exchanger is a shell and tube heat exchanger.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention arranges a heat insulation component outside the purification box and a conversion component inside the purification box. The double-layer filter screen inside the purification box can not only fully intercept and separate the particulate matter contained in the incoming high-temperature flue gas, but also the heat insulation component can play a role in heat preservation and heat insulation for the purification box, thereby preventing a large amount of heat loss of the high-temperature flue gas entering the purification box. The internal conversion component can contact the flowing high-temperature flue gas to heat the cold water flowing in the conversion component, thereby allowing the flue gas purification mechanism to normally intercept and separate the particulate matter in the high-temperature flue gas. At the same time, the heat recovery mechanism can recover the waste heat of the high-temperature flue gas flowing in the flue gas purification mechanism, so that when the high-temperature flue gas flows to intercept and separate the particulate matter, there will be no large amount of heat loss, thereby causing unnecessary waste.

[0019] 2. The present invention arranges a conversion component below the filter, and the cavity ring and the connecting swivel are connected with the converging main pipe through multiple guide square tubes, so that the cold water entering the cavity ring can flow into the converging main pipe through the multiple guide square tubes, so that the high-temperature flue gas entering the purification box can fully contact with the multiple guide square tubes, so that the flowing cold water can be quickly and efficiently heated, so that the high-temperature flue gas flowing in the cooling box can be fully processed for waste heat recovery. At the same time, the multiple guide square tubes rotate on the lower surface of the filter, which can not only make the cold water in the guide square tube be heated in a turbulent state, but also the rotating guide square tube can drive the cleaning brush to brush and clean the lower surface of the filter in contact, so as to prevent a large number of particulates from accumulating on the lower surface of the filter, which will not only affect the normal flow, interception and separation of the high-temperature flue gas in the purification box, but also affect the efficiency of the heating treatment of the cold water flowing in the guide square tube by the flowing high-temperature flue gas.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure disclosed in the present invention;

[0023] Figure 2 It is a structural schematic diagram of the flue gas purification mechanism disclosed in the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the purification box disclosed in the present invention;

[0025] Figure 4 It is a structural schematic diagram of the double-layer filter screen disclosed in the present invention;

[0026] Figure 5 is a cross-sectional view of the filter screen disclosed in the present invention;

[0027] Figure 6 The present invention discloses Figure 5 A partial enlarged view of the middle part;

[0028] Figure 7 The present invention discloses Figure 5 A partial enlarged view of point B in the middle.

[0029] In the figure: 1, carbonization furnace body; 11, combustion chamber; 12, smoke exhaust pipe;

[0030] 2. Smoke purification mechanism; 21. Support base; 22. Purification box; 23. Smoke inlet pipe; 24. Filter screen; 25. Exhaust pipe; 26. Waste discharge duct;

[0031] 3. Heat insulation assembly; 31. Heat insulation cover; 32. Air intake pipe; 33. Heat exhaust pipe; 34. Heating cavity;

[0032] 4. Conversion assembly; 41. Cavity ring; 411. Annular groove; 42. Liquid injection pipe; 43. Connecting swivel; 431. Annular flow cavity; 44. Sealing ring; 45. Square guide tube; 46. Converging main pipe; 461. Liquid spray hole; 47. Liquid discharge conduit; 48. Driving shaft; 49. Cleaning brush;

[0033] 5. Heat exchanger;

[0034] 6. Electric telescopic rod;

[0035] 7. Support network disk; 71. Support long strip;

[0036] 8. Laminating tube;

[0037] 9. Curved scraper. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] See also Figure 1-Figure 7 As shown, the present invention is an environmentally friendly carbonization device with waste heat recovery function, comprising a carbonization furnace body 1, a flue gas purification mechanism 2 and a heat exchanger 5;

[0041] A carbonization furnace body 1, wherein a combustion chamber 11 is formed at the bottom of the carbonization furnace body 1, a carbonization chamber is formed above the combustion chamber 11, and a smoke exhaust pipe 12 is provided at the top of the carbonization furnace body 1;

[0042] A flue gas purification mechanism 2, the flue gas purification mechanism 2 is located on one side of the carbonization furnace body 1, and is used to separate particulate matter mixed in the flue gas discharged from the exhaust pipe 12. A heat recovery mechanism is provided in the flue gas purification mechanism 2, and the heat recovery mechanism is used to recover the heat emitted from the flue gas being purified by the flue gas purification mechanism 2;

[0043] A heat exchanger 5, wherein a heat medium inlet of the heat exchanger 5 is connected to an exhaust pipe 25 of the flue gas purifier;

[0044] Specifically, the present invention installs a flue gas purification mechanism 2 between the exhaust pipe 12 of the carbonization furnace body 1 and the heat exchanger 5, and the flue gas purification mechanism 2 cooperates with the heat recovery mechanism. When the carbonization furnace body 1 is working to carbonize the machine-made charcoal, the flue gas discharged from the exhaust pipe 12 will enter the flue gas purification mechanism 2 through the smoke inlet pipe 23. At this time, the flue gas purification mechanism 2 will intercept and separate the particulate matter mixed in the flue gas to prevent the particulate matter from entering the heat exchanger 5 in large quantities and causing damage to the heat exchanger 5 or causing accumulation and blockage inside it, thereby affecting the normal operation of the heat exchanger 5; while the flue gas purification mechanism 2 normally intercepts and separates the particulate matter in the hot flue gas, the heat recovery mechanism can recover the waste heat of the hot flue gas flowing in the flue gas purification mechanism 2, so that it will not be lost in large quantities when flowing and cause unnecessary waste, and because the flue gas discharged from the exhaust pipe 12 has a high heat content, therefore, when the flue gas flows in the flue gas purification mechanism 2, it will not cause the temperature of the flue gas to drop completely, and the subsequent normal operation of the heat exchanger cannot be performed.

[0045] In an embodiment of the present invention, the flue gas purification mechanism 2 includes a support base 21, a purification box 22, a smoke inlet pipe 23, a filter 24, an exhaust pipe 25 and a waste discharge duct 26. The support base 21 is fixedly installed on one side of the carbonization furnace body 1, and the top of the support base 21 is fixedly supported by the oil purification box 22. The lower part of the outer ring surface of the purification box 22 is connected to the smoke exhaust pipe 12 through the smoke inlet pipe 23, and the top is connected to the oil exhaust pipe 25. A double-layer filter 24 is installed in the purification box 22, and the mesh diameter of the lower filter 24 is larger than the mesh diameter of the upper filter 24. The arc bottom of the purification box 22 is connected with the waste discharge duct 26;

[0046] Specifically, the smoke discharged from the smoke exhaust pipe 12 will enter the purification box 22 fixedly supported by the support base 21 through the smoke inlet pipe 23. The double-layer filter 24 with different mesh sizes can intercept and separate particles of different sizes contained in the smoke. The separated smoke will enter the heat exchanger 5 through the exhaust pipe 25, thereby effectively preventing a large amount of particles contained in the smoke from entering the heat exchanger 5 and causing damage or blockage to the heat exchanger 5 so that it cannot work normally; and the particles intercepted and separated on the lower surface of the filter 24 will fall to the bottom of the purification box 22, and then be discharged and collected through the waste discharge duct 26.

[0047] In an embodiment of the present invention, the heat recovery mechanism includes a heat insulation component 3 and a conversion component 4, the heat insulation component 3 includes a heat insulation cover 31, an air intake pipe 32 and a heat exhaust pipe 33, the heat insulation cover 31 is sealed and covered on the outside of the purification box 22, and a heating cavity 34 is formed between the heat insulation cover 31 and the purification box 22, the top of the heating cavity 34 is connected to the air intake pipe 32, and the bottom thereof is staggeredly connected to the air intake pipe 32 and connected to the heat exhaust pipe 33, and the other end of the heat exhaust pipe 33 is connected to the combustion chamber 11 through the gas distribution pipe;

[0048] Specifically, when the high-temperature flue gas enters the purification box 22 to intercept and separate particulate matter, the heat insulation cover 31 covering the outside of the purification box 22 can play a role in heat preservation and insulation for the purification box 22. At the same time, the heat generated by the box body of the purification box 22 will heat the air flowing into the heating cavity 34 from the intake pipe 32, and the hot air heated in the heating cavity 34 will be partially discharged into the combustion chamber 11 through the heat exhaust duct 33 for combustion support, and the other part of the hot air will be collected and utilized.

[0049] In the embodiment of the present invention, the conversion assembly 4 includes a cavity ring 41, an injection tube 42, a connecting swivel 43, a sealing ring 44, a guide square tube 45, a confluence main pipe 46 and a drainage conduit 47. The cavity ring 41 with a cavity structure inside is fixed inside the purification box 22 and below the filter screen 24. The inner ring surface of the cavity ring 41 is provided with an annular groove 411, and a connecting swivel 43 with an open inner and outer ring surfaces is rotatably arranged in the annular groove 411. The outer ring surface of the connecting swivel 43 is rotatably sealed and attached to the inner cavity wall of the cavity ring 41 through the sealing ring 44, and the connecting swivel 43 is The inner ring surface is also sealed and rotated to fit the inner ring surface of the cavity ring 41 through a sealing ring 44. An annular flow cavity 431 connected to the inner cavity of the cavity ring 41 is formed between the connecting rotating ring 43 and the sealing ring 44. A plurality of flow-guiding square tubes 45 made of heat-conducting material are installed in a circumferential array on the inner ring surface of the connecting rotating ring 43. One end of the flow-guiding square tube 45 is connected to the annular flow cavity 431, and the other end of the flow-guiding square tube 45 is connected to a confluence main pipe 46 installed vertically in the middle of the filter screen 24. The top end of the confluence main pipe 46 extends out of the purification box 22 and the heat insulation cover 31 through a drainage conduit 47.

[0050] Specifically, when the high-temperature flue gas enters the purification box 22 for particle interception and separation, at this time, the water to be heated can be injected into the cavity ring 41 through at least two injection pipes 42, and the water flow will pass through the annular flow cavity 431 into the multiple guide square tubes 45 made of heat-conducting metal materials, and then merge into the converging main pipe 46. The high-temperature flue gas entering will contact the guide square tubes 45 made of heat-conducting metal materials, so that it heats the flowing cold water in the guide square tubes 45, and the heated hot water will be discharged through the heat exhaust pipe 33 for collection and utilization. Therefore, as the high-temperature flue gas continues to flow in the purification box 22 to intercept and separate the particles, the heat of the high-temperature flue gas can heat the cold water flowing in the multiple guide square tubes 45, so that the flue gas purification mechanism 2 can not only intercept and separate the mixed particles in the high-temperature flue gas, but also recycle and utilize the residual heat remaining in the high-temperature flue gas entering the purification box 22, thereby further improving the recovery and utilization efficiency of the residual heat.

[0051] In an embodiment of the present invention, the conversion assembly 4 further includes a drive shaft 48 and a cleaning brush 49. The drive shaft 48 is vertically installed in the purification box 22, and its bottom end extends out of the purification box 22 through a bearing to be connected to a fixed servo motor output shaft, and the top end of the drive shaft 48 is connected to the bottom end of the confluence main pipe 46. A cleaning brush 49 is installed at the pipe wall where the guide square pipe 45 is connected to the filter screen 24, and the cleaning brush 49 is in contact with the lower surface of the filter screen 24. The top end of the confluence main pipe 46 is connected to the drainage conduit 47 through a bearing.

[0052] Specifically, when the cold water injected into the cavity ring 41 continuously flows into the multiple guide square tubes 45 through the annular flow cavity 431, the fixed servo motor at the bottom of the purification box 22 can be controlled to work, so that it drives the converging main pipe 46 to rotate through the driving shaft 48, so that the multiple guide square tubes 45 will rotate under the filter 24, and the multiple guide square tubes 45 are installed in the cavity ring 41 through the matching sealing rotation of the connecting swivel 43 and the sealing ring 44. Therefore, not only will it not affect the normal rotation of the multiple guide square tubes 45, but it can also enable the cold water injected into the cavity ring 41 to be stably and safely diverted to the multiple guide square tubes 45 through the annular flow cavity 431, and then the rotation of the multiple guide square tubes 45 can make the cold water flow in the cavity ring 41, the guide square tubes 45 and the converging main pipe 46 in a turbulent state for heating. , thereby further improving the interception and separation of particles of high-temperature flue gas in the purification box 22, and being able to fully and quickly heat the disturbed diverted cold water, and since the vertical confluence main pipe 46 is connected to the filter screen 24 and the drainage duct 47 by bearings, it will not affect the normal rotation of the multiple guide square pipes 45 driven by the confluence main pipe 46; and when the multiple guide square pipes 45 rotate in a circle on the lower surface of the filter screen 24, the cleaning brush 49 installed on the upper surface of the guide square pipe 45 will rotate and clean the lower surface of the filter screen 24, which can prevent a large number of particles from accumulating on the lower surface of the filter screen 24, which will not only affect the normal flow interception and separation of high-temperature flue gas in the purification box 22, but also affect the efficiency of the heating treatment of the cold water flowing in the guide square pipe 45 by the flowing high-temperature flue gas, thereby easily causing safety hazards.

[0053] In an embodiment of the present invention, an electric telescopic rod 6 is vertically fixed to the bottom of the confluence main pipe 46, and a support mesh plate 7 is installed on the top surface of the piston rod of the electric telescopic rod 6, and the support mesh plate 7 is slidably and sealedly fitted into the confluence main pipe 46, and a plurality of support strips 71 are vertically installed on the upper surface of the support mesh plate 7, and the plurality of support strips 71 are respectively located between two adjacent flow guide square pipes 45 connected to the inner tube wall of the confluence main pipe 46, and a plurality of spray holes 461 are opened on the circumference of the tube wall of the confluence main pipe 46, and the plurality of spray holes 461 are located on the upper surface of the filter net 24, and a plurality of fitting tubes 8 are installed on the upper end surfaces of the plurality of support strips 71, and the tube wall of the fitting tube 8 is slidably and sealedly fitted with the inner tube wall of the confluence main pipe 46, and the fitting tube 8 is in slidably and tightly contacted with the plurality of spray holes 461;

[0054] Specifically, when it is necessary to clean the particles adhered to and accumulated on the surface of the filter screen 24 in the purification box 22, it is necessary to stop the carbonization furnace body 1 at this time, and then close the valve on the drainage conduit 47. At this time, the piston rod of the electric telescopic rod 6 is controlled to extend so that it passes through the supporting mesh plate 7 and the supporting strip 71, driving the fitting tube 8 to break away from the blockage on the inner hole wall of the multiple spray holes 461, and then inject the cleaning agent into the cavity ring 41 through the injection pipe 42, and then merge into the confluence through the multiple guide square pipes 45. The cleaning agent is then sprayed onto the surface of the filter 24 through the plurality of spray holes 461. The rotation of the converging main pipe 46 increases the spraying area of ​​the cleaning agent sprayed from the plurality of spray holes 461, thereby cleaning the filter 24 over a large area. The cleaning brush 49 then rotates to scrub the lower surface of the filter 24, thereby further improving the efficiency of quickly scrubbing the particles adhered to the lower surface of the filter 24. Since the mesh diameter of the lower filter 24 is larger than that of the upper filter 24, the particles adhered to the lower surface of the filter 24 will not be The particles that fall off the lower surface of the upper filter screen 24 after being brushed and dropped normally pass through the lower filter screen 24 and fall to the bottom of the purification box 22, and are then discharged through the waste discharge conduit 26, thereby reducing the frequency of disassembly and cleaning of the filter screen 24 in the purification box 22; and when the filter screen 24 is cleaned, the piston rod of the electric telescopic rod 6 is retracted, so that it drives the fitting tube 8 to slide downward and fit to the hole wall of the spray hole 461 through the supporting strip 71, thereby blocking the spray hole 461, which not only prevents the circulating cold water from being quickly discharged, but also prevents the circulating cold water from being quickly discharged. Rapid heating treatment can be performed, and at the same time, high-temperature flue gas flowing into the purification box 22 can be prevented from entering the confluence main pipe 46 through the spray hole 461, which may easily cause safety hazards to the purification box 22; and the plurality of supporting strips 71 are located between the pipe openings of two adjacent guide square tubes 45 and slide, and the spray hole 461 is sealed by a tubular fitting tube 8, and the supporting mesh disk 7 has a certain mesh shape, so it will not interfere with the water flowing in the guide square tube 45 from being merged into the confluence main pipe 46 and discharged normally.

[0055] In the embodiment of the present invention, a plurality of arc-shaped scraping strips 9 are attached to the inner circumferential array of the arc-shaped bottom of the purification box 22, and the ends of the plurality of arc-shaped scraping strips 9 close to each other are connected to the driving shaft 48;

[0056] Specifically, when the drive shaft 48 rotates, multiple arc-shaped scraper strips 9 will adhere to the arc-shaped box bottom and rotate, thereby being able to scrape the particles falling from the arc-shaped box bottom to the pipe mouth of the waste discharge duct 26, thereby achieving rapid discharge of the particles and cleaning waste liquid falling from the arc-shaped box bottom, and at the same time preventing the particles from adhering to the inside of the arc-shaped box bottom and affecting the normal operation of the purification box 22.

[0057] In the embodiment of the present invention, the heat exchanger 5 is a shell and tube heat exchanger 5 .

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An environmentally friendly carbonization device with waste heat recovery function, characterized in that: It comprises a carbonization furnace body (1), a flue gas purification mechanism (2) and a heat exchanger (5); A carbonization furnace body (1), wherein a combustion chamber (11) is formed at the bottom of the carbonization furnace body (1), a carbonization chamber is formed above the combustion chamber (11), and a smoke exhaust pipe (12) is provided at the top of the carbonization furnace body (1); A flue gas purification mechanism (2), the flue gas purification mechanism (2) being located on one side of the carbonization furnace body (1) and being used for separating particulate matter mixed in the flue gas discharged from the flue gas exhaust pipe (12), a heat recovery mechanism being provided in the flue gas purification mechanism (2), the heat recovery mechanism being used for recovering heat emitted from the flue gas being purified by the flue gas purification mechanism (2); A heat exchanger (5), wherein a heat medium inlet of the heat exchanger (5) is in communication with an exhaust pipe (25) of a flue gas purifier.

2. The environmentally friendly charcoal carbonization device with waste heat recovery function according to claim 1 is characterized in that: The flue gas purification mechanism (2) comprises a support base (21), a purification box (22), a smoke inlet pipe (23), a filter (24), an exhaust pipe (25) and a waste discharge duct (26). The support base (21) is fixedly mounted on one side of the carbonization furnace body (1), and the top of the support base (21) is fixedly supported by the oil purification box (22). The lower part of the outer ring surface of the purification box (22) is connected to the smoke exhaust pipe (12) through the smoke inlet pipe (23), and the top is connected to the oil exhaust pipe (25). A double-layer filter (24) is installed in the purification box (22), and the mesh diameter of the lower filter (24) is larger than the mesh diameter of the upper filter (24). The arc-shaped bottom of the purification box (22) is connected to the waste discharge duct (26).

3. The environmentally friendly charcoal carbonization device with waste heat recovery function according to claim 2 is characterized in that: The heat recovery mechanism comprises a heat insulation component (3) and a conversion component (4); the heat insulation component (3) comprises a heat insulation cover (31), an air intake pipe (32) and a heat exhaust pipe (33); the heat insulation cover (31) is sealed and covered on the outside of the purification box (22); a heating cavity (34) is formed between the heat insulation cover (31) and the purification box (22); the top of the heating cavity (34) is connected to the air intake pipe (32); and the bottom of the heating cavity (34) is connected to the heat exhaust pipe (33) in a staggered manner with the air intake pipe (32); the other end of the heat exhaust pipe (33) is connected to the combustion chamber (11) through an air distribution pipe.

4. The environmentally friendly charcoal carbonization device with waste heat recovery function according to claim 3 is characterized in that: The conversion assembly (4) comprises a cavity ring (41), a liquid injection tube (42), a connecting swivel (43), a sealing ring (44), a flow guide square tube (45), a converging main tube (46) and a liquid discharge conduit (47). A cavity ring (41) with a cavity structure is fixed inside the purification box (22) and below the filter screen (24). An annular groove (411) is provided on the inner ring surface of the cavity ring (41), and a connecting swivel (43) with an open inner and outer ring surfaces is rotatably arranged in the annular groove (411). The outer ring surface of the connecting swivel (43) is rotatably sealed and attached to the inner cavity wall of the cavity ring (41) through the sealing ring (44), and the inner ring surface of the connecting swivel (43) is The connecting ring (43) is also sealed and rotatably attached to the inner ring surface of the cavity ring (41) through a sealing ring (44); an annular flow cavity (431) communicating with the inner cavity of the cavity ring (41) is formed between the connecting ring (43) and the sealing ring (44); a plurality of flow-guiding square tubes (45) made of heat-conducting material are installed in a circumferential array on the inner ring surface of the connecting ring (43); one end of the flow-guiding square tube (45) is connected to the annular flow cavity (431); the other end of the flow-guiding square tube (45) is connected to a converging main pipe (46) installed vertically in the middle of the filter screen (24); the top end of the converging main pipe (46) extends out of the purification box (22) and the heat insulation cover (31) through a drainage conduit (47).

5. The environmentally friendly charcoal carbonization device with waste heat recovery function according to claim 4 is characterized in that: The conversion assembly (4) further comprises a drive shaft (48) and a cleaning brush (49); the drive shaft (48) is vertically mounted in the purification box (22), and its bottom end extends out of the purification box (22) through a bearing and is connected to a fixed servo motor output shaft, and the top end of the drive shaft (48) is connected to the bottom end of the confluence main pipe (46); a cleaning brush (49) is mounted on the pipe wall where the guide square pipe (45) and the filter screen (24) are connected, and the cleaning brush (49) is in contact with the lower surface of the filter screen (24); and the top end of the confluence main pipe (46) is connected to the drainage conduit (47) through a bearing.

6. The environmentally friendly charcoal carbonization device with waste heat recovery function according to claim 4 is characterized in that: An electric telescopic rod (6) is vertically fixed to the bottom of the main confluence pipe (46), and a support net plate (7) is installed on the top surface of the piston rod of the electric telescopic rod (6). The support net plate (7) is slidably and sealingly fitted into the main confluence pipe (46). A plurality of support strips (71) are vertically installed on the upper surface of the support net plate (7), and the plurality of support strips (71) are respectively located between two adjacent flow guide square tubes (45) connected to the inner tube wall of the main confluence pipe (46). A plurality of liquid spray holes (461) are opened on the circumference of the tube wall of the main confluence pipe (46), and the plurality of liquid spray holes (461) are located on the upper surface of the filter net (24). A fitting tube (8) is installed on the upper end surface of the plurality of support strips (71), and the tube wall of the fitting tube (8) is slidably and sealingly fitted to the inner tube wall of the main confluence pipe (46), and the fitting tube (8) is in slidably and fittingly contacting contact with the plurality of liquid spray holes (461).

7. The environmentally friendly charcoal carbonization device with waste heat recovery function according to claim 5 is characterized in that: A plurality of arc-shaped scraping strips (9) are attached to the inner circumferential array of the arc-shaped bottom of the purification box (22), and the ends of the plurality of arc-shaped scraping strips (9) close to each other are connected to the driving shaft (48).

8. The environmentally friendly charcoal carbonization device with waste heat recovery function according to claim 1 is characterized in that: The heat exchanger (5) is a shell and tube heat exchanger (5).

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