Kiln system for treating and recycling tail gas

Abstract

The invention relates to the technical field of kiln tail gas treatment, in particular to a tail gas treatment and recycling kiln system which comprises a furnace body and a tail gas treatment assembly. The furnace body comprises a combustion chamber, an inner container and a shell. The liner is provided with an air supply port and a tail gas port; the tail gas treatment assembly comprises a vibration disc, an oxygen separator, a first electromagnetic valve, a second electromagnetic valve, a first heated pipe, a second heated pipe and a mixing pipe; the vibration disc is close to the air supply port; the first heated pipe, the second heated pipe and the mixing pipe are arranged in the combustion chamber; the tail gas port, the oxygen separator, the first heated pipe, the first electromagnetic valve, the second heated pipe, the second valve and the mixing pipe are communicated in sequence; through the arrangement of the vibration disc, fine carbon powder can be vibrated, so that the carbon powder enters the tail gas port along with airflow; oxygen is separated, so that carbon dioxide in the second heated pipe reacts with carbon powder without being affected by the oxygen, the carbon dioxide reacts with the carbon powder to generate carbon monoxide in cooperation with the first electromagnetic valve and the second electromagnetic valve, and combustion balance is prevented from being damaged by the carbon dioxide.

Description

Technical Field

[0001] The present invention relates to the technical field of kiln tail gas treatment, and particularly relates to a kiln system for tail gas treatment and reuse. Background Art

[0002] Mechanism carbon, as the name implies, is carbon manufactured by machines, also known as artificial carbon, recycled carbon, smokeless clean carbon. It is a carbonaceous rod-shaped material processed by extruding wood chips and powder, and is made into a carbon-rich solid material through dry distillation, pyrolysis and carbonization. However, due to the wide source of rod carbon raw materials, and the tail gas being at high temperature and containing many combustible gases, such as carbon monoxide, methane, and hydrogen; therefore, in the prior art, these combustible gases and heat are recovered and used. However, the gases generated after heating sawdust, wood shavings, bamboo chips, etc. contain tar, carbon dioxide, sulfur dioxide, carbon powder, etc.; during the recovery process, carbon powder and tar are likely to block the recovery pipeline. If tar is directly burned, firstly, it is difficult to burn, and secondly, the carbon dioxide in the gas directly introduced into the combustion will affect the combustion effect, resulting in unstable carbonization temperature and poor carbonization effect. Therefore, a kiln system for tail gas treatment and reuse that can achieve tail gas recovery while ensuring the combustion effect is needed. Summary of the Invention

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

[0004] To solve the above technical problem, the technical solution adopted by the present invention is: A kiln system for tail gas treatment and reuse, comprising a furnace body and a tail gas treatment component; 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 sleeved outside the inner liner and the combustion chamber, and there is a sandwich space communicating with the combustion chamber between the outer shell and the inner liner. An air supply port is provided at the bottom of the left side surface of the inner liner, and a tail gas port is provided at the top of the right side surface; an exhaust port is provided at the top of the outer shell; the combustion temperature of the combustion chamber is 800°C - 1200°C; The tail gas treatment component includes a vibrating disk, an oxygen separator, a first solenoid valve, a second solenoid valve, a first heating tube, a second heating tube, and a mixing tube; the vibrating disk is arranged in the inner tank and near the air supply port, and is used to shake up the carbon powder in the inner tank and cooperate with the airflow at the air supply port to send the carbon powder out of the tail gas port; the oxygen separator includes a first oxygen outlet, and the first heating tube and the second heating tube are horizontally arranged in the combustion chamber; the tail gas port is communicated with the first heating tube through the oxygen separator, and the first heating tube and the second heating tube are communicated through the first solenoid valve; the oxygen separator is used to separate the oxygen in the airflow entering the tail gas port to obtain deoxygenated tail gas containing carbon powder; the combustion chamber pyrolyzes the tar in the deoxygenated tail gas passing through the first heating tube at high temperature to obtain cracked deoxygenated tail gas containing carbon powder; when the cracked deoxygenated tail gas containing carbon powder enters the second heating tube, the first solenoid valve and the second solenoid valve are closed, and carbon dioxide reacts with the carbon powder to generate combustible tail gas containing carbon monoxide; the second heating tube is communicated with the mixing tube through a second valve, the first oxygen outlet is communicated with the mixing tube, and the mixing tube is located in the combustion chamber; the first solenoid valve and the second solenoid valve are opened, and the combustible tail gas is mixed with oxygen and burned in the combustion chamber.

[0005] Preferably, a carbon dioxide concentration sensor is arranged in the second heating tube, and the first solenoid valve and the second solenoid valve control the closing time according to the carbon dioxide concentration sensor.

[0006] Preferably, the furnace body further includes a regenerator, and the regenerator includes a heat absorption channel and a heat release channel; The exhaust port is communicated with the heat absorption channel, and the heat release channel is communicated with the air supply port.

[0007] Preferably, the regenerator is a ceramic regenerator or a graphite regenerator.

[0008] Preferably, the tail gas treatment and reuse kiln furnace system further includes an absorption tower, the absorption tower has an absorption pool and a spray pipe inserted into the absorption pool, and the spray pipe is communicated with the heat absorption channel.

[0009] Preferably, the absorption pool contains NaOH solution.

[0010] Preferably, an air supply valve is arranged on the air supply port.

[0011] Preferably, when the combustion chamber starts to burn, the first solenoid valve and the second solenoid valve are in the open state, and the air supply valve is in the open state.

[0012] Preferably, a first drying device is arranged on the air supply valve.

[0013] Preferably, the combustion chamber includes a gas inlet and an air inlet, and the gas inlet and the air inlet are respectively communicated with the mixing tube; A second drying device is provided on the air inlet.

[0014] The beneficial effects of the present invention are as follows: By arranging the vibrating disk near the air supplement port, the fine carbon powder generated in the furnace can be shaken up, so that enough carbon powder can enter the tail gas port along with the air flow, ensuring that the subsequent reaction can proceed; By separating oxygen, the carbon dioxide in the second heating tube reacts with the carbon powder without being affected by oxygen, that is, preventing the carbon powder from being oxidized by oxygen. Wood tar and wood acetic acid will also be cracked in the first heating tube, and the products of cracking include various hydrocarbon combustibles, carbon dioxide and water. If the carbon dioxide in the original tail gas and the carbon dioxide generated by the cracking of tar and wood acetic acid directly pass through the combustion chamber, it will affect normal combustion, and then cause the temperature in the combustion chamber to be unstable; Therefore, through the setting of the second heating tube, in cooperation with the first solenoid valve and the second solenoid valve, carbon dioxide has enough time to react with the blown-in carbon powder to generate carbon monoxide. By combining carbon monoxide and other hydrocarbon combustibles with the separated oxygen, the stability of combustion can be ensured and the excess carbon powder can be directly burned with oxygen, avoiding the entry of excessive non-combustible gases and destroying the balance in the combustion chamber; The excess carbon powder in the furnace can be burned off, which can reduce the inhalation of carbon powder by the staff after the furnace is opened and the time for subsequent cleaning of the furnace, improving efficiency while ensuring safety; By having an interlayer space communicating with the combustion chamber between the outer shell and the inner liner, the waste heat of combustion can heat the inner liner as a whole, ensuring uniform carbonization and improving consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a tail gas treatment and reuse kiln furnace system according to a specific embodiment of the present invention (the arrow indicates the air flow direction); Reference numerals: 1, furnace body; 11, combustion chamber; 111, gas inlet; 112, air inlet; 113, second drying device; 12, inner liner; 121, air supplement port; 122, tail gas port; 123, air supplement valve; 124, first drying device; 125, vibrating disk; 13, outer shell; 131, exhaust port; 14, interlayer space; 2, oxygen separator; 3, first solenoid valve; 4, second solenoid valve; 5, first heating tube; 6, second heating tube; 7, mixing tube; 8, regenerator; 9, absorption tower; 91, absorption pool; 92, jet pipe. SPECIFIC EMBODIMENTS

[0016] To describe in detail the technical content, achieved objectives and effects of the present invention, the following is described in conjunction with the embodiments and with reference to the drawings.

[0017] Please refer to Figure 1 , a tail gas treatment and reuse kiln furnace system, including a furnace body 1 and a tail gas treatment component; The furnace body 1 includes a combustion chamber 11, an inner container 12, and an outer shell 13. The combustion chamber 11 is located below the inner container 12. The outer shell 13 is sleeved outside the inner container 12 and the combustion chamber 11. There is a sandwich space 14 communicating with the combustion chamber 11 between the outer shell 13 and the inner container 12. An air inlet 121 is provided at the bottom of the left side surface of the inner container 12, and an exhaust gas outlet 122 is provided at the top of the right side surface. An exhaust port 131 is provided at the top of the outer shell 13. The combustion temperature of the combustion chamber 11 is 800°C - 1200°C. The exhaust gas treatment assembly includes a vibrating disk 125, an oxygen separator 2, a first solenoid valve 3, a second solenoid valve 4, a first heating tube 5, a second heating tube 6, and a mixing tube 7. The vibrating disk is arranged in the inner container 12 and is close to the air inlet 121. It is used to vibrate the carbon powder in the inner container 12 and send the carbon powder out of the exhaust gas outlet 122 in cooperation with the airflow of the air inlet 121. The oxygen separator 2 includes a first oxygen outlet. The first heating tube 5 and the second heating tube 6 are horizontally arranged in the combustion chamber 11. The exhaust gas outlet 122 is communicated with the first heating tube 5 through the oxygen separator 2. The first heating tube 5 and the second heating tube 6 are communicated through the first solenoid valve 3. The oxygen separator 2 is used to separate the oxygen in the airflow entering the exhaust gas outlet 122 to obtain deoxygenated exhaust gas containing carbon powder. The combustion chamber 11 pyrolyzes the tar in the deoxygenated exhaust gas passing through the first heating tube 5 at high temperature to obtain cracked deoxygenated exhaust gas containing carbon powder. When the cracked deoxygenated exhaust gas containing carbon powder enters the second heating tube 6, the first solenoid valve 3 and the second solenoid valve 4 are closed, and carbon dioxide reacts with the carbon powder to generate combustible exhaust gas containing carbon monoxide. The second heating tube 6 is communicated with the mixing tube 7 through a second valve. The first oxygen outlet is communicated with the mixing tube 7. The mixing tube 7 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 with oxygen and burn it in the combustion chamber 11.

[0018] As can be seen from the above description, by setting the vibrating disk near the air supplement port 121, the fine carbon powder generated in the furnace can be shaken up, enabling sufficient carbon powder to enter the exhaust gas port 122 along with the air flow, ensuring that the subsequent reaction can proceed; by separating oxygen, the carbon dioxide in the second heating tube 6 can react with the carbon powder without being affected by oxygen, that is, preventing the carbon powder from being oxidized by oxygen. Wood tar and wood acetic acid will also undergo cracking in the first heating tube 5, and the cracking products include various hydrocarbon combustibles, carbon dioxide (since wood tar has a high oxygen content, more carbon dioxide will be generated), and water. If the carbon dioxide in the original exhaust gas and the carbon dioxide generated by the cracking of tar and wood acetic acid directly pass through the combustion chamber 11, it will affect normal combustion, and further lead to unstable temperature in the combustion chamber 11; therefore, through the setting of the second heating tube 6, in cooperation with the first solenoid valve 3 and the second solenoid valve 4, carbon dioxide has sufficient time to react with the blown-in carbon powder to generate carbon monoxide. By combining carbon monoxide and other hydrocarbon combustibles with the separated oxygen, the stability of combustion can be ensured and the excess carbon powder can be directly burned with added oxygen, avoiding the entry of excessive non-combustible gases and disrupting the balance in the combustion chamber 11; the excess carbon powder in the furnace liner can be burned off, which can reduce the time for carbon powder to fly and be inhaled by the staff after the furnace is opened and the subsequent cleaning of the furnace liner, improving efficiency while ensuring safety; through the sandwich space 14 between the outer shell 13 and the inner liner 12 that is connected to the combustion chamber 11, the waste heat of combustion can heat the inner liner 12 as a whole, ensuring uniform carbonization and improving consistency.

[0019] 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 (flammable); wood acetic acid is also a mixture, and its main component is acetic acid. When acetic acid undergoes high-temperature cracking, it may crack into a combination of methane and carbon dioxide or a combination of ketene and water, and ketene is also a combustible.

[0020] Furthermore, a carbon dioxide concentration sensor is provided in the second heating tube 6, and the first solenoid valve 3 and the second solenoid valve 4 control the closing time according to the carbon dioxide concentration sensor.

[0021] As can be seen from the above description, since the reaction between carbon dioxide and carbon powder requires time, if it is too short, the reaction is insufficient and the concentration of the discharged carbon dioxide is 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.

[0022] Furthermore, the furnace body 1 further includes a heat storage body 8, and the heat storage body 8 includes a heat absorption channel and a heat release channel; The exhaust port 131 is communicated with the heat absorption channel, and the heat release channel is communicated with the air supplement port 121.

[0023] As can be seen from the above description, through the action of the heat storage body 8, the waste heat can be utilized to ensure the temperature of the supplementary air.

[0024] Furthermore, the heat storage body 8 is a ceramic heat storage body 8 or a graphite heat storage body 8.

[0025] As can be seen from the above description, by using a ceramic heat storage body 8 or a graphite heat storage body 8, since there is still sulfur dioxide and carbon dioxide in the tail gas, which has certain corrosiveness and metals are not suitable, while the tar has been removed and there is no cleaning difficulty, so both the ceramic heat storage body 8 and the graphite heat storage body 8 can be used.

[0026] Furthermore, the tail gas treatment and reuse kiln furnace system further includes an absorption tower 9. The absorption tower 9 has an absorption pool 91 and a spray pipe 92 inserted into the absorption pool 91, and the spray pipe 92 is communicated with the heat absorption channel.

[0027] As can be seen from the above description, through the final absorption tower 9 and by inserting the spray pipe 92 into the absorption pool 91, the final heat can be utilized to heat the absorption pool 91 to improve the reaction effect; so that the final product of the tail gas is only water.

[0028] Furthermore, the absorption pool 91 contains NaOH solution.

[0029] Furthermore, a supplementary air valve 123 is provided on the supplementary air port 121.

[0030] As can be seen from the above description, through the setting of the supplementary air valve 123, the speed of the supplementary air can be controlled by controlling the opening degree of the supplementary air valve 123.

[0031] Furthermore, when the combustion chamber 11 starts to burn, 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.

[0032] As can be seen from the above description, at the beginning of combustion, when the combustion starts and the temperature rises rapidly during combustion, by opening the first solenoid valve 3 and the second solenoid valve 4, the air flow during combustion can be used to preheat from places such as the mixing pipe 7, the second heating pipe 6, the first heating pipe 5, and the tail gas port 122, thereby preventing coking.

[0033] Furthermore, a first drying device 124 is provided on the supplementary air valve 123.

[0034] As can be seen from the above description, through the first drying device 124, it can be ensured that the moisture content of the air entering the inner tank 12 is low, and it can avoid the excessive moisture from affecting the product quality.

[0035] Furthermore, the combustion chamber 11 includes a gas inlet 111 and an air inlet 112, and the gas inlet 111 and the air inlet 112 are respectively communicated with the mixing pipe 7; A second drying device 113 is provided on the air inlet 112.

[0036] As can be seen from the above description, through the second drying device 113, the moisture entering the combustion chamber 11 can be reduced. Since the hydrocarbon combustibles and water are generated after the tar is cracked, excessive moisture can be prevented from greatly affecting combustion. Embodiment 1

[0037] A waste gas treatment and reuse kiln furnace system includes a furnace body 1 and a waste gas treatment component; 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 sleeved outside the inner liner 12 and the combustion chamber 11. There is an interlayer space 14 communicating with the combustion chamber 11 between the outer shell 13 and the inner liner 12. An air supplement port 121 is provided at the bottom of the left side surface of the inner liner 12, and a waste gas port 122 is provided at the top of the right side surface. An exhaust port 131 is provided at the top of the outer shell 13. The combustion temperature of the combustion chamber 11 is 800°C - 1200°C; The waste gas treatment component includes a vibrating disk 125, an oxygen separator 2, a first solenoid valve 3, a second solenoid valve 4, a first heating tube 5, a second heating tube 6, and a mixing tube 7. The vibrating disk is arranged in the inner liner 12 and is close to the air supplement port 121 for vibrating the carbon powder in the inner liner 12 and sending the carbon powder out of the waste gas port 122 in cooperation with the air flow of the air supplement port 121. The oxygen separator 2 includes a first oxygen outlet. The first heating tube 5 and the second heating tube 6 are horizontally arranged in the combustion chamber 11. The waste gas port 122 is communicated with the first heating tube 5 through the oxygen separator 2. The first heating tube 5 and the second heating tube 6 are communicated through the first solenoid valve 3. The oxygen separator 2 is used for separating oxygen in the air flow entering the waste gas port 122 to obtain deoxygenated waste gas containing carbon powder. The combustion chamber 11 pyrolyzes the tar in the deoxygenated waste gas passing through the first heating tube 5 at high temperature to obtain cracked deoxygenated waste gas containing carbon powder. When the cracked deoxygenated waste gas containing carbon powder enters the second heating tube 6, the first solenoid valve 3 and the second solenoid valve 4 are closed, and carbon dioxide reacts with the carbon powder to generate combustible waste gas containing carbon monoxide. The second heating tube 6 is communicated with the mixing tube 7 through a second valve. The first oxygen outlet is communicated with the mixing tube 7. The mixing tube 7 is located in the combustion chamber 11. The first solenoid valve 3 and the second solenoid valve 4 are opened, and the combustible waste gas is mixed with oxygen and burned in the combustion chamber 11.

[0038] A carbon dioxide concentration sensor is provided in the second heating tube 6, and the first solenoid valve 3 and the second solenoid valve 4 control the closing time according to the carbon dioxide concentration sensor.

[0039] The furnace body 1 further includes a heat storage body 8. The heat storage body 8 includes a heat absorption channel and a heat release channel; The exhaust port 131 is communicated with the heat absorption channel, and the heat release channel is communicated with the air supplement port 121.

[0040] The heat storage body 8 is a ceramic heat storage body 8 or a graphite heat storage body 8.

[0041] The tail gas treatment and reuse kiln furnace system further includes an absorption tower 9. An absorption pool 91 and a spray pipe 92 inserted into the absorption pool 91 are arranged in the absorption tower 9, and the spray pipe 92 is communicated with the heat absorption channel.

[0042] The absorption pool 91 contains NaOH solution. Embodiment 2

[0043] A tail gas treatment and reuse kiln furnace system includes a furnace body 1 and a tail gas treatment component; The furnace body 1 includes a vibrating disk 125, a combustion chamber 11, an inner tank 12 and an outer shell 13. The combustion chamber 11 is located below the inner tank 12; the outer shell 13 is sleeved outside the inner tank 12 and the combustion chamber 11, and there is a sandwich space 14 communicated with the combustion chamber 11 between the outer shell 13 and the inner tank 12. An air supplement port 121 is arranged at the bottom of the left side surface of the inner tank 12, and a tail gas port 122 is arranged at the top of the right side surface; an exhaust port 131 is arranged at the top of the outer shell 13; the combustion temperature of the combustion chamber 11 is 800°C - 1200°C; The tail gas treatment component includes an oxygen separator 2, a first electromagnetic valve 3, a second electromagnetic valve 4, a first heating tube 5, a second heating tube 6 and a mixing tube 7; the vibrating disk is arranged in the inner tank 12 and close to the air supplement port 121 for vibrating the carbon powder in the inner tank 12 and sending the carbon powder out of the tail gas port 122 in cooperation with the air flow of the air supplement port 121; the oxygen separator 2 includes a first oxygen outlet, and the first heating tube 5 and the second heating tube 6 are horizontally arranged in the combustion chamber 11; the tail gas port 122 is communicated with the first heating tube 5 through the oxygen separator 2, and the first heating tube 5 and the second heating tube 6 are communicated through the first electromagnetic valve 3; the oxygen separator 2 is used for separating oxygen in the air flow entering the tail gas port 122 to obtain deoxygenated tail gas containing carbon powder; the combustion chamber 11 pyrolyzes the tar in the deoxygenated tail gas passing through the first heating tube 5 at high temperature to obtain cracked deoxygenated tail gas containing carbon powder; when the cracked deoxygenated tail gas containing carbon powder enters the second heating tube 6, the first electromagnetic valve 3 and the second electromagnetic valve 4 are closed, and carbon dioxide reacts with the carbon powder to generate combustible tail gas containing carbon monoxide; the second heating tube 6 is communicated with the mixing tube 7 through a second valve, the first oxygen outlet is communicated with the mixing tube 7, and the mixing tube 7 is located in the combustion chamber 11; the first electromagnetic valve 3 and the second electromagnetic valve 4 are opened to mix the combustible tail gas with oxygen and burn in the combustion chamber 11.

[0044] A carbon dioxide concentration sensor is disposed in the second heat receiving tube 6, and the first solenoid valve 3 and the second solenoid valve 4 control the closing time according to the carbon dioxide concentration sensor.

[0045] The furnace body 1 further includes a heat storage body 8, and the heat storage body 8 includes a heat absorption channel and a heat release channel; The exhaust port 131 is communicated with the heat absorption channel, and the heat release channel is communicated with the air supplement port 121.

[0046] The heat storage body 8 is a ceramic heat storage body 8 or a graphite heat storage body 8.

[0047] The tail gas treatment and reuse furnace system further includes an absorption tower 9. An absorption pool 91 and a spray pipe 92 inserted into the absorption pool 91 are provided in the absorption tower 9, and the spray pipe 92 is communicated with the heat absorption channel.

[0048] The absorption pool 91 contains a NaOH solution.

[0049] An air supplement valve 123 is provided on the air supplement port 121.

[0050] When the combustion chamber 11 starts to burn, the first solenoid valve 3 and the second solenoid valve 4 are in an open state, and the air supplement valve 123 is in an open state.

[0051] A first drying device 124 is provided on the air supplement valve 123.

[0052] The combustion chamber 11 includes a gas inlet 111 and an air inlet 112, and the gas inlet 111 and the air inlet 112 are respectively communicated with the mixing pipe 7; A second drying device 113 is provided on the air inlet 112.

[0053] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An exhaust gas treatment and reuse kiln system, characterized in that It includes a furnace body and a tail gas treatment component; 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 sleeved outside the inner liner and the combustion chamber, and there is a sandwich space communicating with the combustion chamber between the outer shell and the inner liner. At the bottom of the left side of the inner liner, there is an air supplement port, and at the top of the right side, there is a tail gas port. At the top of the outer shell, there is an exhaust port. The combustion temperature of the combustion chamber is 800°C - 1200°C; The tail gas treatment component includes a vibrating disk, an oxygen separator, a first solenoid valve, a second solenoid valve, a first heating tube, a second heating tube, and a mixing tube. The vibrating disk is arranged inside the inner liner and near the air supplement port to vibrate the carbon powder inside the inner liner and cooperate with the airflow at the air supplement port to send the carbon powder out of the tail gas port. The oxygen separator includes a first oxygen outlet. The first heating tube and the second heating tube are horizontally arranged in the combustion chamber. The tail gas port is connected to the first heating tube through the oxygen separator, and the first heating tube and the second heating tube are connected through the first solenoid valve. The oxygen separator is used to separate the oxygen in the airflow entering the tail gas port to obtain deoxygenated tail gas containing carbon powder. The combustion chamber pyrolyzes the tar in the deoxygenated tail gas passing through the first heating tube at high temperature to obtain cracked deoxygenated tail gas containing carbon powder. When the cracked deoxygenated tail gas containing carbon powder enters the second heating tube, the first solenoid valve and the second solenoid valve are closed, and carbon dioxide reacts with the carbon powder to generate combustible tail gas containing carbon monoxide. The second heating tube is connected to the mixing tube through a second valve, and the first oxygen outlet is connected to the mixing tube. The mixing tube is located in the combustion chamber. The first solenoid valve and the second solenoid valve are opened to mix the combustible tail gas and oxygen and burn them in the combustion chamber.

2. The tail gas treatment and reuse kiln system according to claim 1, characterized in that, A carbon dioxide concentration sensor is arranged inside the second heating tube, and the first solenoid valve and the second solenoid valve control the closing time according to the carbon dioxide concentration sensor.

3. The tail gas treatment and reuse kiln system according to claim 1, wherein, The furnace body further includes a heat storage body, and the heat storage body 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 supplement port.

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

5. The tail gas treatment and reuse kiln system according to claim 3, characterized in that, The tail gas treatment and reuse kiln furnace system further includes an absorption tower. Inside the absorption tower, there is an absorption pool and a spray pipe inserted into the absorption pool. The spray pipe is connected to the heat absorption channel.

6. The tail gas treatment and reuse kiln furnace system according to claim 5, characterized in that, There is NaOH solution in the absorption pool.

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

8. The tail gas treatment and reuse kiln system according to claim 7, characterized in that, When the combustion chamber starts to burn, the first solenoid valve and the second solenoid valve are in the open state, and the air supplement valve is in the open state.

9. The tail gas treatment and reuse kiln system according to claim 7, characterized in that, A first drying device is arranged on the air supplement valve.

10. The tail gas treatment and reuse kiln system according to claim 7, characterized in that, The combustion chamber includes a gas inlet and an air inlet. The gas inlet and the air inlet are respectively connected to the mixing tube; A second drying device is arranged on the air inlet.

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