A kiln system for treating and reusing exhaust gas

Abstract

This invention relates to the field of kiln exhaust gas treatment technology, specifically to a kiln system for exhaust gas treatment and reuse, comprising a furnace body and an exhaust gas treatment assembly; the furnace body includes a combustion chamber, an inner liner, and an outer shell; the inner liner has an air inlet and an exhaust gas outlet; the exhaust gas treatment assembly includes a vibrating disc, an oxygen separator, a first solenoid valve, a second solenoid valve, a first heating pipe, a second heating pipe, and a mixing pipe; the vibrating disc is located near the air inlet; the first heating pipe, the second heating pipe, and the mixing pipe are arranged in the combustion chamber; the exhaust gas outlet, the oxygen separator, the first heating pipe, the first solenoid valve, the second heating pipe, the second valve, and the mixing pipe are sequentially connected; this invention, through the setting of the vibrating disc, can shake up fine carbon powder, allowing the carbon powder to enter the exhaust gas outlet with the airflow; separating oxygen allows carbon dioxide in the second heating pipe to react with the carbon powder without being affected by oxygen, and in conjunction with the first and second solenoid valves, carbon dioxide reacts with the carbon powder to generate carbon monoxide, preventing carbon dioxide from disrupting the combustion balance.

Description

Technical Field

[0001] This invention relates to the field of kiln exhaust gas treatment technology, and more specifically to a kiln system for exhaust gas treatment and reuse. Background Technology

[0002] Machine-made charcoal, as the name suggests, is charcoal manufactured by machines. Also known as artificial charcoal, recycled charcoal, or smokeless clean charcoal, it is a carbon-rich solid material produced by extruding wood chips and powders into charcoal rods and then carbonizing them through dry distillation and pyrolysis. However, because the raw materials for charcoal rods are widely available, and the exhaust gas is high-temperature and contains many combustible gases such as carbon monoxide, methane, and hydrogen, current technologies recover these combustible gases and heat for reuse. However, the gases generated after heating sawdust, shavings, bamboo shavings, etc., contain tar, carbon dioxide, sulfur dioxide, and carbon powder. During the recovery process, carbon powder and tar easily clog the recovery pipes. If tar is burned directly, firstly, combustion is difficult, and secondly, the direct introduction of carbon dioxide into the combustion process affects the combustion effect, leading to unstable carbonization temperature and poor carbonization results. Therefore, a kiln system for exhaust gas treatment and reuse that can achieve exhaust gas recovery while ensuring combustion efficiency is needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a kiln system for treating and reusing exhaust gas that can achieve exhaust gas recovery while ensuring combustion effect.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A kiln system for treating and reusing exhaust gas includes a kiln body and exhaust gas treatment components;

[0006] The furnace body includes a combustion chamber, an inner liner, and an outer shell. The combustion chamber is located below the inner liner. The outer shell is fitted over the inner liner and the combustion chamber, and there is an interlayer space between the outer shell and the inner liner that communicates with the combustion chamber. The bottom left side of the inner liner is provided with an air inlet, and the top right side is provided with an exhaust port. The top of the outer shell is provided with an exhaust port. The combustion temperature of the combustion chamber is 800℃-1200℃.

[0007] The exhaust gas treatment assembly includes a vibratory feeder, an oxygen separator, a first solenoid valve, a second solenoid valve, a first heating pipe, a second heating pipe, and a mixing pipe. The vibratory feeder is located inside the inner chamber and near the air inlet to agitate the carbon powder inside the inner chamber, which, in conjunction with the airflow from the air inlet, is used to expel the carbon powder from the exhaust gas outlet. The oxygen separator includes a first oxygen outlet, and the first and second heating pipes are horizontally arranged in the combustion chamber. The exhaust gas outlet is connected to the first heating pipe through the oxygen separator, and the first and second heating pipes are connected through the first solenoid valve. The oxygen separator is used to separate the carbon powder entering the exhaust gas outlet. After oxygen separation in the gas flow, deoxygenated exhaust gas containing carbon powder is obtained; the combustion chamber performs high-temperature pyrolysis of the tar in the deoxygenated exhaust gas passing through the first heating tube to obtain pyrolyzed deoxygenated exhaust gas containing carbon powder; when the pyrolyzed deoxygenated exhaust gas containing carbon powder enters the second heating tube, the first and second solenoid valves are closed, and carbon dioxide reacts with carbon powder to generate combustible exhaust gas containing carbon monoxide; the second heating tube is connected to the mixing tube through the second valve, and the first oxygen outlet is connected to the mixing tube, which is located in the combustion chamber; the first and second solenoid valves are opened to mix the combustible exhaust gas and oxygen in the combustion chamber for combustion.

[0008] Preferably, a carbon dioxide concentration sensor is installed inside the second heating tube, and the first and second solenoid valves control the closing time according to the carbon dioxide concentration sensor.

[0009] Preferably, the furnace body further includes a heat storage body, which includes a heat absorption channel and a heat release channel;

[0010] The exhaust port is connected to the heat absorption channel, and the heat release channel is connected to the air supply port.

[0011] Preferably, the heat storage body is a ceramic heat storage body or a graphite heat storage body.

[0012] Preferably, the exhaust gas treatment and reuse kiln system further includes an absorption tower, which has an absorption pool and a jet pipe inserted into the absorption pool, and the jet pipe is connected to the heat absorption channel.

[0013] Preferably, the absorption tank contains a NaOH solution.

[0014] Preferably, an air supply valve is provided on the air supply port.

[0015] Preferably, when combustion begins in the combustion chamber, the first solenoid valve and the second solenoid valve are in the open state, and the air supply valve is in the open state.

[0016] Preferably, the gas replenishment valve is equipped with a first drying device.

[0017] Preferably, the combustion chamber includes a gas inlet and an air inlet, which are respectively connected to a mixing pipe;

[0018] A second drying device is installed on the air inlet.

[0019] The beneficial effects of this invention are as follows: By setting the vibratory feeder near the gas inlet, the fine carbon powder generated in the furnace can be shaken up, allowing sufficient carbon powder to enter the exhaust gas inlet with the airflow, ensuring that subsequent reactions can proceed; by separating oxygen, the carbon dioxide in the second heating tube reacts with the carbon powder without being affected by oxygen, thus preventing the carbon powder from being oxidized by oxygen. Wood tar and wood acetate also undergo cracking in the first heating tube, and the cracking products include various hydrocarbon combustibles, carbon dioxide, and water. If the carbon dioxide and tar from the original exhaust gas, as well as the carbon dioxide produced by the cracking of wood acetate, were to pass directly through the combustion chamber, it would affect normal combustion and lead to unstable combustion chamber temperature; therefore, by using the second heating tube... The design, in conjunction with the first and second solenoid valves, allows sufficient time for carbon dioxide to react with the blown-in carbon powder to generate carbon monoxide. The combination of carbon monoxide with other hydrocarbon combustibles and separated oxygen ensures stable combustion, and excess carbon powder is directly burned off with oxygen, preventing excessive non-combustible gas from entering and disrupting the balance within the combustion chamber. Excess carbon powder inside the furnace is burned off, reducing the time required for workers to inhale flying carbon powder after kiln opening and for subsequent furnace cleaning, ensuring safety while improving efficiency. The interlayer space between the outer shell and inner liner, connected to the combustion chamber, allows waste heat from combustion to heat the entire inner liner, ensuring uniform carbonization and improving consistency. Attached Figure Description

[0020] Figure 1 A simplified structural diagram of a tail gas treatment and reuse kiln system according to a specific embodiment of the present invention (arrows indicate airflow direction).

[0021] Labeling Explanation: 1. Furnace body; 11. Combustion chamber; 111. Gas inlet; 112. Air inlet; 113. Second drying device; 12. Inner liner; 121. Air supply port; 122. Exhaust port; 123. Air supply valve; 124. First drying device; 125. Vibrating plate; 13. Outer shell; 131. Exhaust port; 14. Interlayer space; 2. Oxygen separator; 3. First solenoid valve; 4. Second solenoid valve; 5. First heating pipe; 6. Second heating pipe; 7. Mixing pipe; 8. Heat storage body; 9. Absorption tower; 91. Absorption tank; 92. Jet pipe. Detailed Implementation

[0022] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0023] Please refer to Figure 1 A tail gas treatment and reuse kiln system, comprising a kiln body 1 and a tail gas treatment component;

[0024] The furnace body 1 includes a combustion chamber 11, an inner liner 12, and an outer shell 13. The combustion chamber 11 is located below the inner liner 12. The outer shell 13 is fitted over the inner liner 12 and the combustion chamber 11. There is an interlayer space 14 between the outer shell 13 and the inner liner 12 that communicates with the combustion chamber 11. The bottom left side of the inner liner 12 is provided with an air inlet 121, and the top right side is provided with an exhaust outlet 122. The top of the outer shell 13 is provided with an exhaust outlet 131. The combustion temperature of the combustion chamber 11 is 800℃-1200℃.

[0025] The exhaust gas treatment assembly includes a vibratory feeder 125, an oxygen separator 2, a first solenoid valve 3, a second solenoid valve 4, a first heating pipe 5, a second heating pipe 6, and a mixing pipe 7. The vibratory feeder is located inside the inner liner 12 and near the air inlet 121 to vibrate the carbon powder inside the inner liner 12, which, in conjunction with the airflow from the air inlet 121, sends the carbon powder out of the exhaust port 122. The oxygen separator 2 includes a first oxygen outlet, and the first heating pipe 5 and the second heating pipe 6 are horizontally arranged inside the combustion chamber 11. The exhaust port 122 is connected to the first heating pipe 5 through the oxygen separator 2, and the first heating pipe 5 and the second heating pipe 6 are connected through the first solenoid valve 3. The oxygen separator 2 is used for... After separating the oxygen in the gas flow entering the exhaust port 122, deoxygenated exhaust gas containing carbon powder is obtained; the combustion chamber 11 performs high-temperature pyrolysis of the tar in the deoxygenated exhaust gas passing through the first heating pipe 5 to obtain pyrolyzed deoxygenated exhaust gas containing carbon powder; when the pyrolyzed deoxygenated exhaust gas containing carbon powder enters the second heating pipe 6, the first solenoid valve 3 and the second solenoid valve 4 are closed, and carbon dioxide reacts with carbon powder to generate combustible exhaust gas containing carbon monoxide; the second heating pipe 6 is connected to the mixing pipe 7 through the second valve, and the first oxygen outlet is connected to the mixing pipe 7, which is located in the combustion chamber 11; the first solenoid valve 3 and the second solenoid valve 4 are opened to mix the combustible exhaust gas and oxygen in the combustion chamber 11 for combustion.

[0026] As described above, by setting the vibratory feeder near the air inlet 121, the fine carbon powder generated in the furnace can be shaken up, allowing sufficient carbon powder to enter the exhaust gas inlet 122 with the airflow, ensuring that subsequent reactions can proceed. By separating oxygen, the carbon dioxide in the second heating tube 6 reacts with the carbon powder without being affected by oxygen, thus preventing the carbon powder from being oxidized by oxygen. Wood tar and wood acetate will also be cracked in the first heating tube 5. The products of cracking include various hydrocarbon combustibles, carbon dioxide (wood tar has a high oxygen content, so more carbon dioxide is generated), and water. If the carbon dioxide from the original exhaust gas and the carbon dioxide generated from the cracking of tar and wood acetate directly pass through the combustion chamber 11, it will affect normal combustion, leading to unstable temperature in the combustion chamber 11. Therefore, by setting the second heating pipe 6, in conjunction with the first solenoid valve 3 and the second solenoid valve 4, carbon dioxide has sufficient time to react with the blown carbon powder to generate carbon monoxide. Through the combination of carbon monoxide and other hydrocarbon combustibles with separated oxygen, the stability of combustion can be ensured, and excess carbon powder can be directly burned off with oxygen, avoiding the entry of excessive non-combustible gas and disrupting the balance within the combustion chamber 11. Excess carbon powder in the furnace can be burned off, which can reduce the time for carbon powder to fly around and be inhaled by workers after the kiln is opened, as well as the time for subsequent furnace cleaning, ensuring safety while improving efficiency. Through the interlayer space 14 between the outer shell 13 and the inner liner 12 that communicates with the combustion chamber 11, the waste heat from combustion can heat the inner liner 12 as a whole, ensuring uniform carbonization and improving consistency.

[0027] Since tar is a complex mixture (containing polycyclic aromatic hydrocarbons, phenols, etc.), the cracking products depend on the specific components. The main products are methane, ethylene, hydrogen, carbon monoxide, carbon dioxide, water, and a small amount of benzene compounds (which are flammable). Wood acetic acid is also a mixture, with acetic acid as its main component. Acetic acid cracks at high temperatures and may crack into a combination of methane and carbon dioxide or a combination of ketene and water. Ketene is also flammable.

[0028] Furthermore, a carbon dioxide concentration sensor is installed inside the second heating pipe 6, and the first solenoid valve 3 and the second solenoid valve 4 control the closing time according to the carbon dioxide concentration sensor.

[0029] As can be seen from the above description, since the reaction between carbon dioxide and carbon powder takes time, if it is too short, the reaction will be insufficient and the concentration of emitted carbon dioxide will be too high, which will still affect combustion. Therefore, it is necessary to adjust the closing time of the first solenoid valve 3 and the second solenoid valve 4 according to the concentration.

[0030] Furthermore, the furnace body 1 also includes a heat storage body 8, which includes a heat absorption channel and a heat release channel;

[0031] The exhaust port 131 is connected to the heat absorption channel, and the heat release channel is connected to the air supply port 121.

[0032] As can be seen from the above description, the waste heat can be utilized through the function of the heat storage body 8 to ensure the temperature of the replenished gas.

[0033] Furthermore, the heat storage body 8 is a ceramic heat storage body 8 or a graphite heat storage body 8.

[0034] As can be seen from the above description, by using ceramic heat storage body 8 or graphite heat storage body 8, since there is still sulfur dioxide and carbon dioxide in the exhaust gas, which are somewhat corrosive, while metal is not suitable, and the tar is removed, there is no difficulty in cleaning, so both ceramic heat storage body 8 and graphite heat storage body 8 can be used.

[0035] Furthermore, the exhaust gas treatment and reuse kiln system also includes an absorption tower 9, which has an absorption pool 91 and a jet pipe 92 inserted into the absorption pool 91, and the jet pipe 92 is connected to the heat absorption channel.

[0036] As can be seen from the above description, by passing through the final absorption tower 9 and inserting the jet pipe 92 into the absorption tank 91, the final heat can be used to heat the absorption tank 91, thereby improving the reaction effect; so that the final product of the exhaust gas is only water.

[0037] Furthermore, the absorption cell 91 contains a NaOH solution.

[0038] Furthermore, an air supply valve 123 is provided on the air supply port 121.

[0039] As can be seen from the above description, by setting the air supply valve 123, the air supply speed can be controlled by controlling the opening degree of the air supply valve 123.

[0040] Furthermore, when combustion begins in the combustion chamber 11, the first solenoid valve 3 and the second solenoid valve 4 are in the open state, and the supplementary air valve 123 is in the open state.

[0041] As can be seen from the above description, when combustion begins, the temperature rises rapidly. By opening the first solenoid valve 3 and the second solenoid valve 4, the airflow during combustion can be used to preheat the mixing pipe 7, the second heating pipe 6, the first heating pipe 5, and the exhaust port 122, thereby preventing coking.

[0042] Furthermore, a first drying device 124 is provided on the gas replenishment valve 123.

[0043] As can be seen from the above description, the first drying device 124 can ensure that the moisture content of the air entering the inner liner 12 is low, thus avoiding excessive moisture from affecting the quality of the finished product.

[0044] Furthermore, the combustion chamber 11 includes a gas inlet 111 and an air inlet 112, which are respectively connected to the mixing pipe 7;

[0045] A second drying device 113 is provided on the air inlet 112.

[0046] As can be seen from the above description, the second drying device 113 can reduce the moisture entering the combustion chamber 11, thus avoiding excessive moisture affecting combustion due to the hydrocarbon combustibles and water produced after tar cracking. Example 1

[0047] A kiln system for treating and reusing exhaust gas includes a kiln body 1 and an exhaust gas treatment component;

[0048] The furnace body 1 includes a combustion chamber 11, an inner liner 12, and an outer shell 13. The combustion chamber 11 is located below the inner liner 12. The outer shell 13 is fitted over the inner liner 12 and the combustion chamber 11. There is an interlayer space 14 between the outer shell 13 and the inner liner 12 that communicates with the combustion chamber 11. The bottom left side of the inner liner 12 is provided with an air inlet 121, and the top right side is provided with an exhaust outlet 122. The top of the outer shell 13 is provided with an exhaust outlet 131. The combustion temperature of the combustion chamber 11 is 800℃-1200℃.

[0049] The exhaust gas treatment assembly includes a vibratory feeder 125, an oxygen separator 2, a first solenoid valve 3, a second solenoid valve 4, a first heating pipe 5, a second heating pipe 6, and a mixing pipe 7. The vibratory feeder is located inside the inner liner 12 and near the air inlet 121 to vibrate the carbon powder inside the inner liner 12, which, in conjunction with the airflow from the air inlet 121, sends the carbon powder out of the exhaust port 122. The oxygen separator 2 includes a first oxygen outlet, and the first heating pipe 5 and the second heating pipe 6 are horizontally arranged inside the combustion chamber 11. The exhaust port 122 is connected to the first heating pipe 5 through the oxygen separator 2, and the first heating pipe 5 and the second heating pipe 6 are connected through the first solenoid valve 3. The oxygen separator 2 is used for... After separating the oxygen in the gas flow entering the exhaust port 122, deoxygenated exhaust gas containing carbon powder is obtained; the combustion chamber 11 performs high-temperature pyrolysis of the tar in the deoxygenated exhaust gas passing through the first heating pipe 5 to obtain pyrolyzed deoxygenated exhaust gas containing carbon powder; when the pyrolyzed deoxygenated exhaust gas containing carbon powder enters the second heating pipe 6, the first solenoid valve 3 and the second solenoid valve 4 are closed, and carbon dioxide reacts with carbon powder to generate combustible exhaust gas containing carbon monoxide; the second heating pipe 6 is connected to the mixing pipe 7 through the second valve, and the first oxygen outlet is connected to the mixing pipe 7, which is located in the combustion chamber 11; the first solenoid valve 3 and the second solenoid valve 4 are opened to mix the combustible exhaust gas and oxygen in the combustion chamber 11 for combustion.

[0050] A carbon dioxide concentration sensor is installed inside the second heating pipe 6, and the first solenoid valve 3 and the second solenoid valve 4 control the closing time according to the carbon dioxide concentration sensor.

[0051] The furnace body 1 also includes a heat storage body 8, which includes a heat absorption channel and a heat release channel;

[0052] The exhaust port 131 is connected to the heat absorption channel, and the heat release channel is connected to the air supply port 121.

[0053] The heat storage body 8 is a ceramic heat storage body 8 or a graphite heat storage body 8.

[0054] The exhaust gas treatment and reuse kiln system also includes an absorption tower 9, which has an absorption pool 91 and a jet pipe 92 inserted into the absorption pool 91. The jet pipe 92 is connected to the heat absorption channel.

[0055] The absorption cell 91 contains a NaOH solution. Example 2

[0056] A kiln system for treating and reusing exhaust gas includes a kiln body 1 and an exhaust gas treatment component;

[0057] The furnace body 1 includes a vibratory plate 125, a combustion chamber 11, an inner liner 12, and an outer shell 13. The combustion chamber 11 is located below the inner liner 12. The outer shell 13 is fitted over the inner liner 12 and the combustion chamber 11, and there is an interlayer space 14 between the outer shell 13 and the inner liner 12 that communicates with the combustion chamber 11. The bottom left side of the inner liner 12 is provided with an air inlet 121, and the top right side is provided with an exhaust outlet 122. The top of the outer shell 13 is provided with an exhaust outlet 131. The combustion temperature of the combustion chamber 11 is 800℃-1200℃.

[0058] The exhaust gas treatment assembly includes an oxygen separator 2, a first solenoid valve 3, a second solenoid valve 4, a first heating pipe 5, a second heating pipe 6, and a mixing pipe 7. A vibratory feeder is installed inside the inner liner 12 and near the air inlet 121 to vibrate the carbon powder inside the inner liner 12, which, in conjunction with the airflow from the air inlet 121, sends the carbon powder out of the exhaust port 122. The oxygen separator 2 includes a first oxygen outlet, and the first heating pipe 5 and the second heating pipe 6 are horizontally arranged inside the combustion chamber 11. The exhaust port 122 is connected to the first heating pipe 5 through the oxygen separator 2, and the first heating pipe 5 and the second heating pipe 6 are connected through the first solenoid valve 3. The oxygen separator 2 is used to... After oxygen is separated in the gas flow at the exhaust port 122, deoxygenated exhaust gas containing carbon powder is obtained; the combustion chamber 11 performs high-temperature pyrolysis of the tar in the deoxygenated exhaust gas passing through the first heating pipe 5 to obtain pyrolyzed deoxygenated exhaust gas containing carbon powder; when the pyrolyzed deoxygenated exhaust gas containing carbon powder enters the second heating pipe 6, the first solenoid valve 3 and the second solenoid valve 4 are closed, and carbon dioxide reacts with carbon powder to generate combustible exhaust gas containing carbon monoxide; the second heating pipe 6 is connected to the mixing pipe 7 through the second valve, and the first oxygen outlet is connected to the mixing pipe 7, which is located in the combustion chamber 11; the first solenoid valve 3 and the second solenoid valve 4 are opened to mix the combustible exhaust gas and oxygen in the combustion chamber 11 for combustion.

[0059] A carbon dioxide concentration sensor is installed inside the second heating pipe 6, and the first solenoid valve 3 and the second solenoid valve 4 control the closing time according to the carbon dioxide concentration sensor.

[0060] The furnace body 1 also includes a heat storage body 8, which includes a heat absorption channel and a heat release channel;

[0061] The exhaust port 131 is connected to the heat absorption channel, and the heat release channel is connected to the air supply port 121.

[0062] The heat storage body 8 is a ceramic heat storage body 8 or a graphite heat storage body 8.

[0063] The exhaust gas treatment and reuse kiln system also includes an absorption tower 9, which has an absorption pool 91 and a jet pipe 92 inserted into the absorption pool 91. The jet pipe 92 is connected to the heat absorption channel.

[0064] The absorption cell 91 contains a NaOH solution.

[0065] An air supply valve 123 is provided on the air supply port 121.

[0066] When combustion begins in the combustion chamber 11, the first solenoid valve 3 and the second solenoid valve 4 are in the open state, and the supplementary air valve 123 is in the open state.

[0067] The gas replenishment valve 123 is equipped with a first drying device 124.

[0068] The combustion chamber 11 includes a gas inlet 111 and an air inlet 112, which are respectively connected to the mixing pipe 7;

[0069] A second drying device 113 is provided on the air inlet 112.

[0070] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A kiln system for treating and reusing exhaust gas, characterized in that, Including the furnace body and exhaust gas treatment components; The furnace body includes a combustion chamber, an inner liner, and an outer shell. The combustion chamber is located below the inner liner. The outer shell is fitted over the inner liner and the combustion chamber, and there is an interlayer space between the outer shell and the inner liner that communicates with the combustion chamber. The bottom left side of the inner liner is provided with an air inlet, and the top right side is provided with an exhaust port. The top of the outer shell is provided with an exhaust port. The combustion temperature of the combustion chamber is 800℃-1200℃. The exhaust gas treatment assembly includes a vibratory feeder, an oxygen separator, a first solenoid valve, a second solenoid valve, a first heating pipe, a second heating pipe, and a mixing pipe. The vibratory feeder is located inside the inner chamber and near the air inlet to agitate the carbon powder inside the inner chamber, which, in conjunction with the airflow from the air inlet, is used to expel the carbon powder from the exhaust gas outlet. The oxygen separator includes a first oxygen outlet, and the first and second heating pipes are horizontally arranged in the combustion chamber. The exhaust gas outlet is connected to the first heating pipe through the oxygen separator, and the first and second heating pipes are connected through the first solenoid valve. The oxygen separator is used to separate the carbon powder entering the exhaust gas outlet. After oxygen separation in the gas flow, deoxygenated exhaust gas containing carbon powder is obtained; the combustion chamber performs high-temperature pyrolysis of the tar in the deoxygenated exhaust gas passing through the first heating tube to obtain pyrolyzed deoxygenated exhaust gas containing carbon powder; when the pyrolyzed deoxygenated exhaust gas containing carbon powder enters the second heating tube, the first and second solenoid valves are closed, and carbon dioxide reacts with carbon powder to generate combustible exhaust gas containing carbon monoxide; the second heating tube is connected to the mixing tube through the second valve, and the first oxygen outlet is connected to the mixing tube, which is located in the combustion chamber; the first and second solenoid valves are opened to mix the combustible exhaust gas with oxygen in the combustion chamber for combustion. A carbon dioxide concentration sensor is installed inside the second heating tube, and the first and second solenoid valves control the closing time according to the carbon dioxide concentration sensor.

2. The tail gas treatment and reuse kiln system according to claim 1, characterized in that, The furnace body also includes a heat storage body, which includes a heat absorption channel and a heat release channel; The exhaust port is connected to the heat absorption channel, and the heat release channel is connected to the air supply port.

3. The tail gas treatment and reuse kiln system according to claim 2, characterized in that, The heat storage body is a ceramic heat storage body or a graphite heat storage body.

4. The tail gas treatment and reuse kiln system according to claim 2, characterized in that, The exhaust gas treatment and reuse kiln system also includes an absorption tower, which has an absorption pool and a jet pipe inserted into the absorption pool. The jet pipe is connected to the heat absorption channel.

5. The tail gas treatment and reuse kiln system according to claim 4, characterized in that, The absorption tank contains a NaOH solution.

6. The tail gas treatment and reuse kiln system according to claim 1, characterized in that, An air supply valve is installed on the air supply port.

7. The tail gas treatment and reuse kiln system according to claim 6, characterized in that, When combustion begins in the combustion chamber, the first and second solenoid valves are in the open state, and the air supply valve is in the open state.

8. The tail gas treatment and reuse kiln system according to claim 6, characterized in that, The gas replenishment valve is equipped with a first drying device.

9. The tail gas treatment and reuse kiln system according to claim 6, characterized in that, The combustion chamber includes a gas inlet and an air inlet, which are respectively connected to a mixing pipe; A second drying device is installed on the air inlet.

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