Field waste carbonization furnace with gas circulation device

Abstract

This utility model discloses a field waste carbonization furnace with a gas circulation device, solving the problems of existing small carbonization furnaces not being able to effectively utilize the gas generated during the carbonization of agricultural waste and being unfavorable for exploring carbonization conditions for different agricultural wastes. The field waste carbonization furnace, by setting up a gas circulation device, allows the hot gas generated in the combustion chamber to not only conduct heat through the furnace wall to the field waste inside the carbonization chamber, but also through multiple heat circulation pipes, making the field waste in the carbonization chamber more evenly heated. The combustible gas generated in the carbonization chamber is purified by a dust removal and purification chamber, then transported to the combustion chamber for further combustion through the carbon circulation pipe, and then introduced into a spray chamber for cooling and purification before being discharged into the atmosphere. This effectively treats the gas generated in the carbonization chamber and makes full use of the combustible gas, reducing energy consumption. This application can be used for the carbonization treatment of agricultural waste such as rice straw, monk fruit vines, peanut vines, and sugarcane leaves.

Description

Technical Field

[0001] This utility model belongs to the technical field of carbonization equipment, and specifically relates to a field waste carbonization furnace with a gas circulation device. Background Technology

[0002] A carbonization furnace is a device that converts organic materials such as wood and straw into carbonized products. It heats organic materials in an oxygen-deficient or enclosed environment, causing a pyrolysis reaction that ultimately produces biochar and combustible gases. Agricultural waste such as rice straw, corn stalks, peanut vines, and sugarcane leaves decompose slowly when directly returned to the field and are prone to causing diseases. The coke produced through carbonization is an ideal organic fertilizer, which can be further crushed and used directly for crop cultivation, or used to manufacture environmentally friendly compost.

[0003] Existing small-scale carbonization furnaces have relatively simple structures. The gases produced by these furnaces are generally directly released into the atmosphere, and some of the harmful substances they contain can pollute the environment. Furthermore, they are not conducive to exploring the optimal carbonization temperature and time for different agricultural wastes. Utility Model Content

[0004] The purpose of this invention is to provide a field waste carbonization furnace with a gas circulation device, thereby overcoming the problems of existing small carbonization furnaces not being able to effectively utilize the gas generated during the carbonization of agricultural waste and not being conducive to exploring different carbonization conditions for agricultural waste.

[0005] The specific technical solution is as follows:

[0006] A field waste carbonization furnace with a gas circulation device includes a furnace body and a gas circulation device. The furnace body has a carbonization chamber and a combustion chamber. The carbonization chamber has an openable and closable furnace door and a carbonization gas pipe. The carbonization gas pipe runs through the carbonization chamber, and a regulating valve is installed on the carbonization gas pipe outside the carbonization chamber. The combustion chamber has an openable and closable chamber door with louvers. The carbonization gas pipe discharges untreated carbonization gas, mainly used for scientific research and observation, and can also be used to promptly discharge gas from the carbonization furnace when the gas circulation device becomes blocked. The combustion chamber door has louvers to adjust the oxygen supply, thereby adjusting the fire intensity of the combustion chamber.

[0007] The gas circulation device includes a heat circulation pipe, a gas pipe, a spray chamber, an exhaust pipe, a carbonization pipe, a dust removal and purification chamber, and a carbon circulation pipe. The heat circulation pipe extends from one end of the combustion chamber into the carbonization chamber and traverses the carbonization chamber. It extends from the other end of the carbonization chamber and connects to the gas pipe. The other end of the gas pipe connects to the lower part of the spray chamber, and the exhaust pipe is located at the upper part of the other end of the spray chamber. One end of the carbonization pipe is connected to the carbonization chamber, and the other end is connected to the dust removal and purification chamber. One end of the carbon circulation pipe is connected to the dust removal and purification chamber, and the other end is connected to the combustion chamber. Regulating valves are installed on the heat circulation pipe, the carbonization pipe, and the carbon circulation pipe. The hot gas generated in the combustion chamber is transferred to the field waste inside the carbonization chamber through heat conduction with the furnace wall, and also through the heat circulation pipe, resulting in more uniform heating of the field waste inside the carbonization chamber. The combustible gas generated in the carbonization chamber is purified by the dust removal and purification chamber, and then transported to the combustion chamber for further combustion through the carbon circulation pipe. After that, it is introduced into the spray chamber for cooling and purification through the gas pipe before being discharged into the atmosphere. This method can effectively treat the gas generated in the carbonization chamber and make full use of the combustible gas generated in the carbonization chamber, thereby reducing energy consumption.

[0008] Preferably, the carbonization chamber is a transverse cylindrical shape, and 2-4 heat circulation pipes are provided, arranged parallel to each other at intervals along the circumference of the carbonization chamber. For example, when there are 2 heat circulation pipes, they can be symmetrically arranged inside both sides of the carbonization chamber. When there are 3 heat circulation pipes, they can be symmetrically arranged inside both sides of the carbonization chamber and at the bottom of the carbonization chamber.

[0009] Preferably, the spray chamber is equipped with a water pump and spray pipes, and the spray pipes are arranged in at least two rows at intervals along the height direction of the spray chamber. Alternatively, the spray pipes can be arranged in three or four rows to further improve the cooling, dust removal, and purification effects.

[0010] Preferably, the exhaust pipe is also equipped with a dust filter.

[0011] Preferably, the carbon circulation pipe is equipped with a three-way valve, one branch of the carbon circulation pipe is connected to the combustion chamber, and the other branch is connected to the atmosphere. The gas generated in the carbonization chamber can be circulated into the combustion chamber for further combustion as needed, or it can be directly discharged into the air.

[0012] Preferably, a dust filter is also installed on the branch pipe of the carbon circulation pipe that is connected to the atmosphere.

[0013] Preferably, there are two carbon circulation pipes, which are respectively located on both sides of the dust removal and purification chamber.

[0014] Preferably, the two carbon circulation pipes extend to different parts of the combustion chamber. This is more conducive to the complete combustion of the gases produced by carbonization.

[0015] Preferably, a temperature sensor is installed in the carbonization chamber, the temperature sensor passing through the carbonization chamber, and the display screen of the temperature sensor is located outside the carbonization chamber. In other embodiments, a sensor integrating temperature and air pressure can also be used, which can simultaneously monitor the temperature and air pressure inside the carbonization chamber.

[0016] Preferably, a sealing asbestos gasket is installed where the carbonization gas pipe penetrates the furnace body. The sealing asbestos gasket can improve the airtightness of the carbonization chamber and improve the carbonization effect of field waste.

[0017] Compared with existing technologies, this utility model has the following beneficial effects:

[0018] 1. This utility model, by setting up a gas circulation device, ensures that the hot gas generated in the combustion chamber is not only transferred to the field waste inside the carbonization chamber through heat conduction with the furnace wall, but also through heat circulation pipes, making the field waste in the carbonization chamber more evenly heated. The combustible gas generated in the carbonization chamber is purified by a dust removal and purification chamber, then transported to the combustion chamber for further combustion through the carbon circulation pipes. After being cooled and purified by gas pipes, it is then discharged into the atmosphere. This effectively treats the gas generated in the carbonization chamber, fully utilizes the combustible gas, and reduces energy consumption. Multiple heat circulation pipes can be installed to ensure more even heating of the field waste inside the carbonization chamber and facilitate temperature adjustment within the carbonization chamber.

[0019] 2. The spray system of this utility model is equipped with a water pump and spray pipes. The spray pipes are arranged in multiple rows along the height direction of the spray chamber. Compared with the single row of spray pipes, the cooling, dust removal and purification effect can be further improved.

[0020] 3. The carbon circulation pipe of this invention is equipped with a three-way valve. One branch of the carbon circulation pipe is connected to the combustion chamber, and the other branch is connected to the atmosphere. The gas generated in the carbonization chamber can be circulated into the combustion chamber for further combustion as needed, or it can be directly discharged into the air. There are two carbon circulation pipes, located on both sides of the dust removal and purification chamber and extending to different parts of the combustion chamber, which is more conducive to the complete combustion of the gas generated during carbonization.

[0021] 4. The carbonization chamber of this invention is equipped with a temperature sensor, which can monitor the temperature inside the carbonization chamber in real time, facilitating the adjustment of carbonization processes for different agricultural wastes. Alternatively, the temperature sensor can be an integrated temperature and pressure sensor, capable of simultaneously monitoring both temperature and pressure within the carbonization chamber. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of Honda's waste carbonization furnace.

[0024] Figure 2 This is a schematic diagram of the structure of the furnace door after it is opened.

[0025] Explanation of key figure labels:

[0026] 1. Furnace body; 11. Carbonization chamber; 111. Furnace door; 112. Carbonization gas pipe; 12. Combustion chamber; 121. Chamber door; 2. Gas circulation device; 21. Heat circulation pipe; 22. Gas pipe; 23. Spray chamber; 24. Exhaust pipe; 25. Carbonization pipe; 26. Dust removal and purification chamber; 27. Carbon circulation pipe; 3. Sealing asbestos gasket; 4. Regulating valve; 5. Dust filter; 6. Temperature sensor; 7. Louver; 8. Water pump; 9. Spray pipe; 10. Spray branch pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0031] Example 1

[0032] like Figure 1 As shown, a field waste carbonization furnace with a gas circulation device 2 includes a furnace body 1 and a gas circulation device 2. The furnace body 1 is provided with a carbonization chamber 11 and a combustion chamber 12. The gas circulation device 2 includes a heat circulation pipe 21, a gas pipe 22, a spray chamber 23, an exhaust pipe 24, a carbonization pipe 25, a dust removal and purification chamber 26, and a carbon circulation pipe 27.

[0033] The Honda waste carbonization furnace incorporates a gas circulation device 2. The hot gas generated in the combustion chamber 12 is not only transferred to the field waste within the carbonization chamber 11 through heat conduction with the furnace wall, but also through multiple heat circulation pipes 21, ensuring more even heating of the field waste within the carbonization chamber 11. The combustible gas generated in the carbonization chamber 11 is purified in the dust removal and purification chamber 26, then transported to the combustion chamber 12 for further combustion via the carbon circulation pipe 27. After further cooling and purification, the gas is introduced into the spray chamber 23 through the gas pipe 22 before being discharged into the atmosphere. This effectively treats the gas generated in the carbonization chamber 11 while fully utilizing the combustible gas, thus reducing energy consumption. The Honda waste carbonization furnace solves the problems of existing small-scale carbonization furnaces, such as their inability to effectively utilize the gas generated during the carbonization of agricultural waste and their limitations in exploring different carbonization conditions for agricultural waste.

[0034] Combination Figure 1 and Figure 2The carbonization chamber 11 is equipped with an openable and closable furnace door 111 and a carbonization gas pipe 112. The carbonization gas pipe 112 passes through the top of the carbonization chamber 11, and a sealing asbestos gas pad 3 is installed where the carbonization gas pipe 112 passes through the furnace body 1. A regulating valve 4 and a dust filter 5 are installed on the carbonization gas pipe 112 outside the carbonization chamber 11. In this embodiment, one carbonization gas pipe 112 is provided. In other embodiments, two carbonization gas pipes 112 can also be provided. Both carbonization gas pipes 112 are equipped with regulating valves 4. One carbonization gas pipe 112 is equipped with a dust filter 5, while the other gas pipe 22 is not equipped with a dust filter 5. When it is not necessary to recycle the combustible gas generated in the carbonization chamber 11, the gas can be discharged through the carbonization gas pipe 112. The carbonization gas pipe 112 without a dust filter 5 discharges unpurified gas, which is mainly used for scientific research and observation, and can also be used to promptly discharge the gas in the carbonization furnace when the gas circulation device 2 becomes blocked.

[0035] Furthermore, a temperature sensor 6 is installed in the carbonization chamber 11, the temperature sensor 6 penetrating through the carbonization chamber 11, and the display screen of the temperature sensor 6 is located outside the carbonization chamber 11. The temperature sensor 6 allows for real-time monitoring of the temperature inside the carbonization chamber 11, which is beneficial for adjusting the carbonization process of different agricultural wastes. In other embodiments, the temperature sensor 6 can also be a sensor integrating temperature and air pressure, capable of simultaneously monitoring both the temperature and air pressure inside the carbonization chamber 11.

[0036] Combination Figure 1 The combustion chamber 12 is equipped with an openable and closable door 121. The door 121 and the furnace door 111 are located on different sides of the furnace body 1. The door 121 is equipped with louvers 7. The louvers 7 can be used to adjust the oxygen supply, thereby adjusting the firepower of the combustion chamber 12, which is beneficial for controlling different biomass carbonization conditions. In other embodiments, an air pump can also be used, and an openable and closable air vent can be provided on the door 121. The firepower of the combustion chamber 12 can be further adjusted by blowing air through the air vent using the air pump.

[0037] Combination Figure 2The carbonization chamber 11 is a transverse cylindrical shape. The heat circulation pipe 21 extends from one end of the combustion chamber 12 into the carbonization chamber 11 and traverses the carbonization chamber 11. It extends from the other end of the carbonization chamber 11 and connects to the gas pipe 22. The other end of the gas pipe 22 is connected to the lower part of the spray chamber 23. The exhaust pipe 24 is provided on the upper part of the other end of the spray chamber 23. The heat circulation pipe 21 is equipped with a regulating valve 4. Preferably, there are two heat circulation pipes 21, symmetrically arranged inside both sides of the carbonization chamber 11. The two heat circulation pipes 21 are symmetrically arranged, extending from one end of the carbonization chamber 11 to the other end of the carbonization chamber 11, passing through the carbonization chamber 11 and connecting to the gas pipe 22. They are then connected to the lower part of the spray chamber 23 through the gas pipe 22. The hot gas generated in the combustion chamber 12 is transferred to the field waste inside the carbonization chamber 11 through heat conduction with the furnace wall, and also through the heat circulation pipe 21, making the field waste in the carbonization chamber 11 heated more evenly. In other embodiments, multiple gas pipes 22 are provided, one of which directly connects the combustion chamber 12 to the spray chamber 23, and is equipped with a regulating valve 4. That is, the gas generated in the combustion chamber 12 can be first introduced into the carbonization chamber 11 and then passed to the spray chamber 23 for purification, or it can be directly passed to the spray chamber 23 for purification, which is beneficial for adjusting the temperature inside the carbonization chamber 11.

[0038] Furthermore, the spray chamber 23 is equipped with a water pump 8 and a spray pipe 9, and the spray pipe 9 has three rows of spray branch pipes 10 installed at intervals along the height direction of the spray chamber 23. The three rows of spray branch pipes 10 respectively cool and remove dust from the gas entering the spray chamber 23. Compared with a single row of spray pipes 9, the three rows of spray branch pipes 10 can further improve the cooling, dust removal and purification effect.

[0039] Combination Figure 2One end of the carbonization tube 25 is connected to the carbonization chamber 11, and the other end passes through the upper part of one side of the carbonization chamber 11 and is connected to the dust removal and purification chamber 26. One end of the carbon circulation tube 27 is connected to the dust removal and purification chamber 26, and the other end is connected to the combustion chamber 12. In other embodiments, the carbonization tube 25 is equipped with a regulating valve 4, and the carbon circulation tube 27 is equipped with a three-way valve. One branch of the carbon circulation tube 27 is connected to the combustion chamber 12, and the other branch is connected to the atmosphere. This allows for the selection of whether the gas generated in the carbonization chamber 11 is passed to the combustion chamber 12 for further combustion or purified and discharged to the atmosphere. Furthermore, there are two carbon circulation tubes 27, which are respectively located on both sides of the dust removal and purification chamber 26. The two carbon circulation tubes 27 extend to different parts of the combustion chamber 12, which is more conducive to the complete combustion of the gas generated by carbonization. Both the dust removal and purification chamber 26 and the dust filter 5 adopt existing adsorption dust removal methods. The gas generated in the carbonization chamber 11 can be introduced into the combustion chamber 12 for combustion and heating after dust removal, or it can be further purified before being discharged. For example, if it is necessary to control the temperature of the carbonization chamber 11, it is not necessary to circulate the gas generated in the carbonization chamber 11 into the combustion chamber 12 for combustion, but it can be discharged directly after purification.

[0040] The monk fruit vines are carbonized using a field waste carbonization furnace. The vines are crushed and loaded into the carbonization chamber 11, then the furnace door 111 is closed, ensuring the chamber is sealed. Charcoal and other combustion media are added to the combustion chamber 12, and the oxygen supply is regulated by adjusting the louvers 7. The heat generated in the combustion chamber 12 is transferred to the field waste within the chamber 11 via heat transfer through the furnace wall and also through the heat circulation pipe 21, ensuring even heating of the monk fruit vines. The combustion gases are then purified and discharged through the heat circulation pipe 21 and gas pipe 22 into the spray chamber 23. The gas produced during the carbonization of Luo Han Guo vine in carbonization chamber 11 is purified and dust-removed in dust removal chamber 26, then transported to combustion chamber 12 for further combustion via carbon circulation pipe 27. After further combustion, the gas is introduced into spray chamber 23 for cooling and purification via gas pipe 22 before being discharged into the atmosphere. This process effectively treats the gas produced in carbonization chamber 11 while fully utilizing the combustible gas, thus reducing energy consumption. The suitable carbonization temperature for Luo Han Guo vine is around 200 degrees Celsius. The heat level in carbonization chamber 11 is adjusted promptly when temperature sensor 6 reaches the desired temperature.

[0041] Honda's waste carbonization furnace can also be used to carbonize agricultural waste such as rice straw, banana straw, corn straw, monk fruit vines, peanut vines, and sugarcane leaves. The carbonized agricultural waste can then be returned to the fields as organic fertilizer, improving soil fertility and reducing the occurrence of pests and diseases.

[0042] In summary, the Honda waste carbonization furnace, by incorporating a gas circulation device 2, ensures that the hot gas generated in the combustion chamber 12 is not only transferred to the field waste within the carbonization chamber 11 through heat conduction with the furnace wall, but also through multiple heat circulation pipes 21, resulting in more uniform heating of the field waste within the carbonization chamber 11. The combustible gas generated in the carbonization chamber 11 is purified and dust-removed by the dust removal and purification chamber 26, then transported to the combustion chamber 12 for further combustion through the carbon circulation pipe 27, and finally introduced into the spray chamber 23 through the gas pipe 22 for cooling and purification before being discharged into the atmosphere. This effectively treats the gas generated in the carbonization chamber 11, fully utilizes the combustible gas generated in the carbonization chamber 11, and reduces energy consumption.

[0043] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A field waste carbonization furnace with a gas circulation device, comprising a furnace body and a gas circulation device, characterized in that, The furnace body is provided with a carbonization chamber and a combustion chamber. The carbonization chamber is provided with an openable and closable furnace door and a carbonization gas pipe. The carbonization gas pipe passes through the carbonization chamber and a regulating valve is installed on the carbonization gas pipe outside the carbonization chamber. The combustion chamber is provided with an openable and closable chamber door and a louvered door. The gas circulation device includes a hot circulation pipe, a gas pipe, a spray chamber, an exhaust pipe, a carbonization pipe, a dust removal and purification chamber, and a carbon circulation pipe. The hot circulation pipe extends from one end of the combustion chamber into the carbonization chamber and traverses the carbonization chamber. It extends from the other end of the carbonization chamber and connects to the gas pipe. The other end of the gas pipe is connected to the lower part of the spray chamber, and the exhaust pipe is located at the upper part of the other end of the spray chamber. One end of the carbonization pipe is connected to the carbonization chamber, and the other end is connected to the dust removal and purification chamber. One end of the carbon circulation pipe is connected to the dust removal and purification chamber, and the other end is connected to the combustion chamber. Regulating valves are respectively provided on the hot circulation pipe, the carbonization pipe, and the carbon circulation pipe.

2. The field waste carbonization furnace with a gas circulation device according to claim 1, characterized in that, The carbonization chamber is a transverse cylindrical shape, and 2-4 heat circulation pipes are provided, which are arranged parallel to each other at intervals along the circumference of the carbonization chamber.

3. A field waste carbonization furnace with a gas circulation device according to claim 1, characterized in that, The spray chamber is equipped with a water pump and spray pipes, and the spray pipes are installed with at least two rows of spray branch pipes at intervals along the height direction of the spray chamber.

4. A field waste carbonization furnace with a gas circulation device according to claim 1, characterized in that, The exhaust pipe is also equipped with a dust filter.

5. A field waste carbonization furnace with a gas circulation device according to claim 1, characterized in that, The carbon circulation pipe is equipped with a three-way valve. One branch of the carbon circulation pipe is connected to the combustion chamber, and the other branch of the carbon circulation pipe is connected to the atmosphere.

6. A field waste carbonization furnace with a gas circulation device according to claim 5, characterized in that, A dust filter is also installed on the branch pipe of the carbon circulation pipe that is connected to the atmosphere.

7. A field waste carbonization furnace with a gas circulation device according to claim 1, characterized in that, There are two carbon circulation pipes, which are respectively located on both sides of the dust removal and purification chamber.

8. A field waste carbonization furnace with a gas circulation device according to claim 7, characterized in that, Two carbon circulation pipes extend to different parts of the combustion chamber.

9. A field waste carbonization furnace with a gas circulation device according to claim 1, characterized in that, The carbonization chamber is equipped with a temperature sensor that extends through the chamber, and the display screen of the temperature sensor is located outside the carbonization chamber.

10. A field waste carbonization furnace with a gas circulation device according to claim 1, characterized in that, A sealing asbestos gasket is installed where the carbonization gas pipe passes through the furnace body.

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