Negative pressure air inlet device of multi-tube activation furnace

Abstract

The invention provides a negative pressure air inlet device of a multi-tube activation furnace, and belongs to the technical field of activation furnaces. The furnace body is obliquely arranged through an inclined support, sealing walls are arranged on the two sides of the furnace body, a central combustion chamber distributed in the axial direction of the furnace body is arranged in the middle of the furnace body, the two sides of the central combustion chamber are sealed through the sealing walls on the two sides respectively, and a negative pressure air inlet assembly is arranged between the central combustion chamber and the furnace body. A plurality of activation pipes distributed on the periphery of the central combustion chamber in the circumferential direction of the central combustion chamber are arranged in the furnace body, the two ends of each activation pipe penetrate through the sealing walls on the two sides respectively, a raw material inlet communicated with the outside is formed in one end of each activation pipe, and a raw material outlet is formed in the other end of each activation pipe. And a first negative pressure tail gas inlet assembly is arranged between the raw material outlet of each activation pipe and the central combustion chamber. The combustion speed and temperature in the central combustion chamber can be flexibly controlled, the combustion stability is good, and the temperature in the activation tube is stable; the tail gas emission is effectively reduced; and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of activation furnaces and relates to a negative pressure air intake device of a multi-tube activation furnace. Background Art

[0002] An activation furnace is a device specially used to convert wood or other cellulose raw materials into activated carbon. At present, in order to improve the production efficiency of the activation furnace, multiple activation tubes are usually designed around the central combustion chamber of the activation furnace. The heat generated by the combustion of fuel in the central combustion chamber can raise the temperature inside the activation tube to a high temperature environment. The physical activation method of activated carbon is that the raw materials are contacted with activation gases such as water vapor or CO2 under a high temperature environment to carry out an activation reaction. In the process of raw material activation reaction, temperature plays a very important role. Reasonable temperature control can increase the activation reaction rate and ensure the quality of activated carbon. However, the existing central combustion chamber of the activation furnace has the problems of insufficient combustion stability and low combustion efficiency. The combustion temperature in the central combustion chamber is not easy to control, which makes it impossible to perform stable temperature control on the activation tube, resulting in unstable temperature in the activation tube, affecting the yield and quality of activated carbon. In addition, the activation furnace also has the problem of activated tail gas emission pollution. Summary of the invention

[0003] The object of the present invention is to provide a negative pressure air intake device for a multi-tube activation furnace in view of the above problems.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A negative pressure air intake device for a multi-tube activation furnace comprises a furnace body tilted by an inclined bracket, sealing walls are arranged on both sides of the furnace body, a central combustion chamber distributed along the axial direction of the furnace body is arranged in the middle of the furnace body, the two sides of the central combustion chamber are respectively sealed by the sealing walls on both sides, a negative pressure air intake component is arranged between the central combustion chamber and the furnace body, a plurality of activation tubes distributed on the periphery of the central combustion chamber along the circumference of the central combustion chamber are arranged in the furnace body, two ends of the activation tubes are respectively penetrated by the sealing walls on both sides, one end of the activation tube is provided with a raw material inlet connected to the outside, and the other end is provided with a raw material outlet, a steam pipe and a thermometer are arranged in the activation tube, and a first negative pressure exhaust gas intake component is arranged between the raw material outlet of each activation tube and the central combustion chamber.

[0006] The negative pressure air inlet component can draw external air into the central combustion chamber, providing the necessary oxygen for the fuel combustion process to maintain the stability and efficiency of the combustion in the central combustion chamber, and the negative pressure air inlet component can control the amount of air entering, thereby controlling the combustion speed and temperature to flexibly control the temperature in the activation tube, ensuring the stability of the temperature in the activation tube, and ensuring the yield and quality of the activated carbon. The first negative pressure exhaust gas inlet component can draw the exhaust gas generated by the activation reaction into the central combustion chamber to participate in the combustion, which helps to reduce exhaust gas emissions and improve energy efficiency.

[0007] In the negative pressure air intake device of the above-mentioned multi-tube activation furnace, the negative pressure air intake assembly includes a plurality of negative pressure inlets opened on the outer peripheral wall of the central combustion chamber, an air inlet corresponding to the negative pressure inlet is provided on the outer peripheral wall of the furnace body, the negative pressure inlet is connected to the air inlet through a negative pressure inlet pipe penetrated through the furnace body, a negative pressure outlet connected to the central combustion chamber is provided on the sealing wall of the furnace body near the raw material inlet side, and the negative pressure outlet is connected to the air negative pressure fan through a negative pressure outlet pipe.

[0008] The air negative pressure fan operates to extract the gas in the central combustion chamber through the negative pressure outlet pipe, so that the central combustion chamber forms a negative pressure state. Under the negative pressure state, the external air enters the central combustion chamber through the air inlet on the outer peripheral wall of the furnace body through the negative pressure inlet pipe, providing the necessary oxygen for the fuel combustion process to maintain the stability and efficiency of the combustion in the central combustion chamber.

[0009] In the negative pressure air intake device of the above-mentioned multi-tube activation furnace, the negative pressure inlet is distributed along the circumference of the central combustion chamber and is arranged axially along the central combustion chamber to form several groups of negative pressure inlet groups distributed along the circumference of the central combustion chamber, and the negative pressure inlet group is located between two adjacent activation tubes.

[0010] The negative pressure inlet group distributed circumferentially on the peripheral wall of the central combustion chamber can ensure that the external air can be evenly sucked into various areas of the central combustion chamber. The air can enter the central combustion chamber more evenly and mix fully with the fuel, which helps to achieve a more complete and efficient combustion process. In addition, the evenly distributed negative pressure inlets can reduce the resistance of the air negative pressure fan and reduce the energy consumption of the air negative pressure fan.

[0011] In the negative pressure air intake device of the above-mentioned multi-tube activation furnace, the first negative pressure exhaust gas inlet component includes a closed chamber arranged on the side of the furnace body near the raw material outlet, the closed chamber is connected with the raw material outlet of each activation tube, and a discharge port is provided at the bottom end of the closed chamber. The sealing wall on the side of the furnace body near the raw material outlet is provided with an exhaust gas inlet connecting the closed chamber and the central combustion chamber.

[0012] The closed chamber seals the raw material outlet of each activation tube. The activated carbon discharged from the raw material outlet falls into the closed chamber and is discharged from the discharge port at the bottom of the closed chamber. The exhaust gas in the activation tube enters the closed chamber. Under the negative pressure state of the central combustion chamber, the exhaust gas in the closed chamber is sucked into the central combustion chamber through the exhaust gas inlet to participate in combustion, which helps to reduce exhaust gas emissions and improve energy utilization efficiency.

[0013] In the negative pressure air intake device of the multi-tube activation furnace, flow regulating valves are provided at the air inlet and the tail gas inlet, and a filter assembly is also provided on the tail gas inlet.

[0014] The flow regulating valve at the air inlet can control the amount of air entering the central combustion chamber, and then control the combustion speed and temperature to flexibly control the temperature in the activation tube, ensuring the quality and efficiency of the activation reaction in the activation tube. The flow regulating valve at the exhaust gas inlet can control the amount of exhaust gas entering, and the filter assembly on the exhaust gas inlet can isolate particulate impurities to prevent particulate impurities in the closed room from entering the central combustion chamber.

[0015] In the negative pressure air intake device of the above-mentioned multi-tube activation furnace, the filtering component includes an exhaust gas inlet pipe arranged in the exhaust gas inlet, the exhaust gas inlet pipe inlet end extends into the closed chamber, and a filter screen is provided in the exhaust gas inlet end of the exhaust gas inlet pipe.

[0016] The exhaust gas in the closed chamber is sucked into the central combustion chamber through the exhaust gas inlet pipe to participate in combustion. The filter in the air inlet end of the exhaust gas inlet pipe can isolate particulate impurities and prevent particulate impurities in the closed chamber from entering the central combustion chamber.

[0017] In the negative pressure air intake device of the above-mentioned multi-tube activation furnace, a cooling water tank is provided under the furnace body, a water filling port is provided at the top of the cooling water tank, a cooling box is provided inside the cooling water tank, a feed pipe is provided at the top of the cooling box and is sealed and penetrated through the upper end of the cooling water tank and connected to the discharge port, a discharge channel is provided at the bottom of the cooling box and is sealed and penetrated through the lower end of the cooling water tank, a discharge valve is provided on the discharge channel, and a second negative pressure exhaust gas inlet assembly is provided between the cooling box and the central combustion chamber.

[0018] The activated carbon discharged from the discharge port at the bottom of the closed chamber enters the cooling box through the feed pipe. The temperature of the activated carbon entering the cooling box is relatively high and is mixed with residual exhaust gas. The second negative pressure exhaust gas inlet component can extract these residual exhaust gas into the central combustion chamber to participate in combustion, which can effectively reduce the temperature of the activated carbon, reduce exhaust gas emissions and improve energy utilization efficiency. The cooling water in the cooling water tank can absorb the heat of the activated carbon in the cooling box, thereby water-cooling the activated carbon in the cooling box, with good cooling effect. The activated carbon is finally discharged from the cooling box through the exhaust channel.

[0019] In the negative pressure air intake device of the above-mentioned multi-tube activation furnace, the second negative pressure exhaust gas intake component includes an exhaust pipe sealed and penetrated through the upper end of the cooling water tank, the exhaust pipe is connected to the top of the cooling box, and the exhaust pipe is connected to any air inlet on the outer peripheral wall of the furnace body through the exhaust gas negative pressure fan.

[0020] The exhaust gas negative pressure fan operates to extract the residual exhaust gas in the cooling box out of the cooling box through the exhaust pipe. The exhaust pipe is connected to any air inlet on the peripheral wall of the furnace body through the exhaust gas negative pressure fan. The extracted residual exhaust gas enters the central combustion chamber through the air inlet to participate in combustion, which can effectively reduce the temperature of the activated carbon, reduce the emission of exhaust gas and improve energy utilization efficiency.

[0021] In the negative pressure air intake device of the multi-tube activation furnace, the activation tube is rotationally connected to the sealing wall, and an activation tube rotation driving assembly is provided on one side of the sealing wall.

[0022] The activation tube rotation drive assembly can drive each activation tube to rotate continuously. The raw materials can be evenly heated during the rotation and have uniform and sufficient contact with the water vapor, avoiding the problem of local over-activation or under-activation, improving the activation efficiency, and preventing the raw materials from being in a static state for a long time, causing agglomeration and caking.

[0023] In the negative pressure air intake device of the above-mentioned multi-tube activation furnace, the activation tube rotation drive assembly includes a transmission gear sleeved on the activation tube end near the raw material inlet, a rotation driver is provided on the sealing wall of the furnace body near the raw material inlet side, and a driving gear meshing with the transmission gears on each activation tube is sleeved on the output end of the rotation driver, and the driving gear can synchronously drive each activation tube to rotate, and a rotation groove adapted to the activation tube is provided on the sealing wall, and a rotation bearing is provided between the rotation groove and the activation tube.

[0024] The operation of the rotary drive can synchronously drive each activation tube to rotate, with high transmission accuracy and reliable transmission, so that the raw materials are evenly heated and in uniform and sufficient contact with the water vapor, thereby improving the activation efficiency and ensuring that the raw materials in each activation tube are activated under the same rotation action. It ensures that the time required for the activation of the raw materials in each activation tube is similar, which can produce more uniform and higher quality activated carbon, further improve the activation efficiency and product quality, and prevent the raw materials from being in a static state for a long time, causing agglomeration and caking.

[0025] Compared with the existing technology, the advantages of the present invention are: 1. Air can evenly enter each area of ​​the central combustion chamber to provide sufficient oxygen for the combustion process to ensure the stability and efficiency of combustion. 2. The combustion speed and temperature in the central combustion chamber can be flexibly controlled to ensure the stability of the temperature in the activation tube and the yield and quality of activated carbon. 3. Effectively reduce the emission of tail gas and improve energy utilization efficiency. 4. The raw materials are evenly heated and evenly and fully contacted with water vapor, avoiding the problem of local over-activation or under-activation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure provided by the present invention;

[0027] Figure 2 It is a structural schematic diagram of a negative pressure air inlet component;

[0028] Figure 3 yes Figure 1 The enlarged schematic diagram of point A in the middle;

[0029] Figure 4It is a schematic diagram of the structure of the cooling box.

[0030] In the figure, the inclined bracket 1, the furnace body 2, the sealing wall 3, the central combustion chamber 4, the negative pressure air inlet component 5, the activation pipe 6, the raw material inlet 7, the raw material outlet 8, the steam pipe 9, the first negative pressure exhaust gas inlet component 10, the negative pressure inlet 11, the air inlet 12, the negative pressure inlet pipe 13, the negative pressure outlet 14, the negative pressure outlet pipe 15, the air negative pressure fan 16, the negative pressure inlet group 17, the closed chamber 18, the discharge port 19, the exhaust gas inlet 20, the filter component 21, the exhaust gas inlet pipe 22, the filter 23, the cooling water tank 24, the cooling box 25, the water inlet 26, the feed pipe 27, the discharge channel 28, the second negative pressure exhaust gas inlet component 29, the exhaust pipe 30, the exhaust gas negative pressure fan 31, the activation pipe rotation drive component 32, the transmission gear 33, the rotation driver 34, the drive gear 35, the rotation groove 36, the rotation bearing 37, and the combustion boiler 38. DETAILED DESCRIPTION

[0031] like Figure 1-Figure 3 As shown, a negative pressure air intake device of a multi-tube activation furnace comprises a furnace body 2 which is tilted by an inclined bracket 1, sealing walls 3 are arranged on both sides of the furnace body 2, a central combustion chamber 4 which is distributed along the axial direction of the furnace body 2 is arranged in the middle of the furnace body 2, both sides of the central combustion chamber 4 are sealed by the sealing walls 3 on both sides, a negative pressure air intake component 5 is arranged between the central combustion chamber 4 and the furnace body 2, a plurality of activation tubes 6 which are distributed on the outer periphery of the central combustion chamber 4 along the circumference of the central combustion chamber 4 are arranged in the furnace body 2, both ends of the activation tube 6 are respectively penetrated by the sealing walls 3 on both sides, one end of the activation tube 6 is provided with a raw material inlet 7 connected to the outside, and the other end is provided with a raw material outlet 8, a steam pipe 9 and a thermometer are arranged in the activation tube 6, and a first negative pressure exhaust gas intake component 10 is arranged between the raw material outlet 8 of each activation tube 6 and the central combustion chamber 4.

[0032] In the present invention, the raw materials enter the activation tube 6 from the raw material inlet 7 of each activation tube 6 through the feeder. After the feeder has loaded the materials, it is sealed between the raw material inlet 7 of each activation tube 6. The heat generated by the combustion of fuel in the central combustion chamber 4 in the middle of the furnace body 2 can raise the temperature of the inside of the circumferentially distributed activation tube 6 to a high temperature environment. The steam pipe 9 in the activation tube 6 can pass water vapor into the activation tube 6. The raw material and water vapor are activated and reacted at high temperature to form activated carbon. The activated carbon is discharged from the raw material outlet 8 along the inclined activation tube 6 under the action of gravity.

[0033] The negative pressure air inlet component 5 between the central combustion chamber 4 and the furnace body 2 can draw external air into the central combustion chamber 4, provide necessary oxygen for the fuel combustion process to maintain the stability and efficiency of the combustion in the central combustion chamber 4, and can control the amount of air entering through the negative pressure air inlet component 5, thereby controlling the combustion speed and temperature to flexibly control the temperature in the activation tube 6, thereby ensuring the temperature stability in the activation tube 6 and ensuring the yield and quality of the activated carbon. The first negative pressure exhaust gas inlet component 10 between the raw material outlet 8 of the activation tube 6 and the central combustion chamber 4 can draw the exhaust gas generated by the activation reaction into the central combustion chamber 4 to participate in the combustion, which helps to reduce exhaust gas emissions and improve energy utilization efficiency.

[0034] Specifically, combined with Figure 1-Figure 3 As shown, the negative pressure air inlet assembly 5 includes a plurality of negative pressure inlets 11 opened on the outer peripheral wall of the central combustion chamber 4, an air inlet 12 adapted to the negative pressure inlet 11 is provided on the outer peripheral wall of the furnace body 2, the negative pressure inlet 11 is connected to the air inlet 12 via a negative pressure inlet pipe 13 penetrating the furnace body 2, a negative pressure outlet 14 connected to the central combustion chamber 4 is opened on the sealing wall 3 on the side of the raw material inlet 7 of the furnace body 2, and the negative pressure outlet 14 is connected to the air negative pressure fan 16 via a negative pressure outlet pipe 15.

[0035] The air negative pressure fan 16 operates to extract the gas in the central combustion chamber 4 through the negative pressure outlet pipe 15, so that the central combustion chamber 4 forms a negative pressure state. Under the negative pressure state, external air enters the central combustion chamber 4 through the air inlet 12 on the outer wall of the furnace body 2 through the negative pressure inlet pipe 13, providing the necessary oxygen for the fuel combustion process to maintain the stability and efficiency of the combustion in the central combustion chamber 4.

[0036] Specifically, combined with Figure 1 and Figure 2 As shown, the negative pressure inlet 11 is distributed along the circumference of the central combustion chamber 4 and is arranged axially along the central combustion chamber 4 to form a plurality of negative pressure inlet groups 17 distributed along the circumference of the central combustion chamber 4 , and the negative pressure inlet group 17 is located between two adjacent activation tubes 6 .

[0037] The circumferentially distributed negative pressure inlet group 17 on the outer peripheral wall of the central combustion chamber 4 can ensure that the external air can be evenly sucked into various areas within the central combustion chamber 4. The air can enter the central combustion chamber 4 more evenly and mix fully with the fuel, which helps to achieve a more complete and efficient combustion process. The evenly distributed negative pressure inlets 11 can reduce the operating resistance of the air negative pressure fan 16 and reduce the energy consumption of the air negative pressure fan 16.

[0038] Specifically, combined with Figure 1 and Figure 3As shown, the first negative pressure exhaust gas inlet component 10 includes a closed chamber 18 arranged on the side of the furnace body 2 near the raw material outlet, the closed chamber 18 is connected to the raw material outlet 8 of each activation tube 6, a discharge port 19 is provided at the bottom end of the closed chamber 18, and an exhaust gas inlet 20 connecting the closed chamber 18 and the central combustion chamber 4 is opened on the sealing wall 3 on the side of the furnace body 2 near the raw material outlet 8.

[0039] The closed chamber 18 seals the raw material outlet 8 of each activation tube 6. The activated carbon discharged from the raw material outlet 8 falls into the closed chamber 18 and is discharged from the discharge port 19 at the bottom of the closed chamber 18. The exhaust gas in the activation tube 6 enters the closed chamber 18. Under the negative pressure state of the central combustion chamber 4, the exhaust gas in the closed chamber 18 is sucked into the central combustion chamber 4 through the exhaust gas inlet 20 to participate in the combustion, which helps to reduce the emission of exhaust gas and improve the energy utilization efficiency.

[0040] Specifically, combined with Figure 1 and Figure 3 As shown, flow regulating valves are provided at the air inlet 12 and the exhaust gas inlet 20 , and a filter assembly 21 is also provided on the exhaust gas inlet 20 .

[0041] The flow regulating valve at the air inlet 12 can control the amount of air entering the central combustion chamber 4, and then control the combustion speed and temperature to flexibly control the temperature in the activation tube 6, ensuring the quality and efficiency of the activation reaction in the activation tube 6. The flow regulating valve at the exhaust gas inlet 20 can control the amount of exhaust gas entering. The filter assembly 21 on the exhaust gas inlet 20 can isolate particulate impurities to prevent particulate impurities in the closed chamber 18 from entering the central combustion chamber 4.

[0042] Specifically, combined with Figure 1 and Figure 3 As shown, the filter assembly 21 includes an exhaust gas inlet pipe 22 disposed in the exhaust gas inlet 20 , the inlet end of the exhaust gas inlet pipe 22 extends into the closed chamber 18 , and a filter screen 23 is disposed in the inlet end of the exhaust gas inlet pipe 22 .

[0043] The exhaust gas in the closed chamber 18 is sucked into the central combustion chamber 4 through the exhaust gas inlet pipe 22 to participate in combustion. The filter screen 23 in the intake end of the exhaust gas inlet pipe 22 can isolate particulate impurities and prevent particulate impurities in the closed chamber 18 from entering the central combustion chamber 4.

[0044] Specifically, combined with Figure 1 and Figure 4As shown, a cooling water tank 24 is provided below the furnace body 2, a water inlet 26 is provided at the top of the cooling water tank 24, a cooling box 25 is provided inside the cooling water tank 24, a feed pipe 27 is provided at the top of the cooling box 25 and is sealed and penetrated through the upper end of the cooling water tank 24 and connected to the discharge port 19, a discharge channel 28 is provided at the bottom of the cooling box 25 and is sealed and penetrated through the lower end of the cooling water tank 24, a discharge valve is provided on the discharge channel 28, and a second negative pressure exhaust gas inlet component 29 is provided between the cooling box 25 and the central combustion chamber 4.

[0045] The activated carbon discharged from the discharge port 19 at the bottom of the closed chamber 18 enters the cooling box 25 through the feed pipe 27. The temperature of the activated carbon entering the cooling box 25 is relatively high and is mixed with residual exhaust gas. The second negative pressure exhaust gas inlet component 29 can extract these residual exhaust gas to the central combustion chamber 4 to participate in combustion, which can effectively reduce the temperature of the activated carbon, reduce exhaust gas emissions and improve energy utilization efficiency. The cooling water in the cooling water tank 24 can absorb the heat of the activated carbon in the cooling box 25, thereby water-cooling the activated carbon in the cooling box 25, with a good cooling effect. The activated carbon is finally discharged from the cooling box 25 through the discharge channel 28.

[0046] Specifically, combined with Figure 1 and Figure 4 As shown, the second negative pressure exhaust gas inlet component 29 includes an exhaust pipe 30 sealed and penetrated through the upper end of the cooling water tank 24, the exhaust pipe 30 is connected to the top of the cooling box 25, and the exhaust pipe 30 is connected to any air inlet 12 on the outer wall of the furnace body 2 through the exhaust gas negative pressure fan 31.

[0047] The exhaust gas negative pressure fan 31 runs through the exhaust pipe 30 to extract the residual exhaust gas in the cooling box 25 out of the cooling box 25. The exhaust pipe 30 is connected to any air inlet 12 on the outer wall of the furnace body 2 through the exhaust gas negative pressure fan 31. The extracted residual exhaust gas enters the central combustion chamber 4 through the air inlet 12 to participate in combustion, which can effectively reduce the temperature of the activated carbon, reduce the emission of exhaust gas and improve energy utilization efficiency.

[0048] Specifically, combined with Figure 1 As shown, the activation tube 6 is rotationally connected to the sealing wall 3, and an activation tube rotation driving assembly 32 is provided on one side of the sealing wall 3.

[0049] The activation tube rotation drive assembly 32 can drive each activation tube 6 to rotate continuously. The raw material can be evenly heated during the rotation and can be in uniform and sufficient contact with the water vapor, thus avoiding the problem of local over-activation or insufficient activation, improving the activation efficiency, and preventing the raw material from being in a static state for a long time, causing agglomeration and caking.

[0050] Specifically, combined with Figure 1 and Figure 3As shown, the activation tube rotation drive assembly 32 includes a transmission gear 33 sleeved on the end of the activation tube 6 near the raw material inlet 7, a rotation driver 34 is provided on the sealing wall 3 on the side of the furnace body 2 near the raw material inlet 7, and a driving gear 35 meshing with the transmission gear 33 on each activation tube 6 is sleeved on the output end of the rotation driver 34, and the driving gear 35 can synchronously drive each activation tube 6 to rotate, and a rotation groove 36 adapted to the activation tube 6 is provided on the sealing wall 3, and a rotation bearing 37 is provided between the rotation groove 36 and the activation tube 6.

[0051] The rotary driver 34 runs, and the driving gear 35 on the output end of the rotary driver 34 rotates. Through the meshing transmission with the transmission gear 33 on the end of each activation tube 6 near the raw material inlet 7, the rotation of the driving gear 35 can synchronously drive the activation tubes 6 to rotate. The transmission has high precision and is reliable, so that the raw materials are evenly heated and evenly and fully contacted with the water vapor, thereby improving the activation efficiency and ensuring that the raw materials in each activation tube 6 undergo activation reaction under the same rotation action, ensuring that the time required for the activation of the raw materials in each activation tube 6 is close to the same, so that more uniform and higher quality activated carbon can be produced, further improving the activation efficiency and product quality, and preventing the raw materials from being in a static state for a long time, resulting in agglomeration and agglomeration.

[0052] The rotating groove 36 on the sealing wall 3 is adapted to the activation tube 6. The rotating bearing 37 between the rotating groove 36 and the activation tube 6 plays the role of rotatingly connecting the activation tube 6 and the sealing wall 3 and supporting the activation tube 6. When the activation tube 6 rotates, the rotating bearing 37 can reduce the friction between the activation tube 6 and the sealing wall 3, making the activation tube 6 rotate more smoothly, thereby ensuring the stability of the rotation of the activation tube 6 and effectively reducing energy consumption.

[0053] Specifically, combined with Figure 1 As shown, the steam pipe 9 is sealed and penetrated in the closed chamber 18 , and the air inlet end of the steam pipe 9 is connected to the external combustion boiler 38 . The water vapor generated by the operation of the external combustion boiler 38 is passed into the activation tube 6 through the steam pipe 9 .

[0054] The working principle of the present invention is as follows: the raw material enters the activation tube 6 through the raw material inlet 7 of each activation tube 6 through the feeder, and the feeder is sealed with the raw material inlet 7 of each activation tube 6 after loading the material. The heat generated by the combustion of fuel in the central combustion chamber 4 in the middle of the furnace body 2 can heat the inside of the circumferentially distributed activation tube 6 to a high temperature environment, and the steam pipe 9 in the activation tube 6 can pass water vapor into the activation tube 6. The rotary driver 34 runs to synchronously drive each activation tube 6 to rotate. The raw material can be evenly heated during the rotation process and is in uniform and sufficient contact with the water vapor. The raw material and the water vapor are activated at high temperature to form activated carbon, and the activated carbon is discharged from the raw material outlet 8 along the inclined activation tube 6 under the action of gravity.

[0055] The air negative pressure fan 16 operates to extract the gas in the central combustion chamber 4 through the negative pressure outlet pipe 15, so that the central combustion chamber 4 forms a negative pressure state. Under the negative pressure state, the external air evenly enters various areas in the central combustion chamber 4 through the negative pressure inlet group 17 on the outer peripheral wall of the furnace body 2, providing necessary oxygen for the fuel combustion process to maintain the stability and efficiency of the combustion in the central combustion chamber 4. The flow regulating valve at the air inlet 12 can control the amount of air entering the central combustion chamber 4, which is used to control the speed and temperature of the combustion to flexibly control the temperature in the activation tube 6;

[0056] When the central combustion chamber 4 is under negative pressure, the exhaust gas in the closed chamber 18 is sucked into the central combustion chamber 4 through the exhaust gas inlet 20 to participate in the combustion. The exhaust gas negative pressure fan 31 runs through the exhaust pipe 30 to extract the residual exhaust gas in the cooling box 25 out of the cooling box 25. The extracted residual exhaust gas can enter the central combustion chamber 4 through any air inlet 12 to participate in the combustion.

[0057] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0058] Although this article uses more inclined brackets 1, furnace body 2, sealing wall 3, central combustion chamber 4, negative pressure air inlet assembly 5, activation pipe 6, raw material inlet 7, raw material outlet 8, steam pipe 9, first negative pressure exhaust gas inlet assembly 10, negative pressure inlet 11, air inlet 12, negative pressure inlet pipe 13, negative pressure outlet 14, negative pressure outlet pipe 15, air negative pressure fan 16, negative pressure inlet group 17, closed chamber 18, discharge port 19, exhaust gas inlet 20, filter assembly 21, exhaust gas inlet pipe 22, filter screen 23, cooling The water tank 24, the cooling box 25, the water inlet 26, the feed pipe 27, the discharge channel 28, the second negative pressure exhaust gas inlet assembly 29, the exhaust pipe 30, the exhaust gas negative pressure fan 31, the activation tube rotation drive assembly 32, the transmission gear 33, the rotation driver 34, the drive gear 35, the rotation groove 36, the rotation bearing 37, the combustion boiler 38, etc., these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A negative pressure air intake device for a multi-tube activation furnace, comprising a furnace body (2) tilted by an inclined bracket (1), with sealing walls (3) provided on both sides of the furnace body (2), characterized in that: A central combustion chamber (4) is provided in the middle of the furnace body (2) and is distributed along the axial direction of the furnace body (2). Both sides of the central combustion chamber (4) are sealed by sealing walls (3) on both sides. A negative pressure air inlet component (5) is provided between the central combustion chamber (4) and the furnace body (2). A plurality of activation tubes (6) are provided in the furnace body (2) and are distributed along the circumference of the central combustion chamber (4) on the outer periphery of the central combustion chamber (4). Both ends of the activation tube (6) are respectively passed through the sealing walls (3) on both sides. One end of the activation tube (6) is provided with a raw material inlet (7) connected to the outside, and the other end is provided with a raw material outlet (8). A steam pipe (9) and a thermometer are provided in the activation tube (6). A first negative pressure exhaust gas inlet component (10) is provided between the raw material outlet (8) of each activation tube (6) and the central combustion chamber (4).

2. The negative pressure air intake device of the multi-tube activation furnace according to claim 1 is characterized in that: The negative pressure air inlet assembly (5) comprises a plurality of negative pressure inlets (11) provided on the outer peripheral wall of the central combustion chamber (4); an air inlet (12) adapted to the negative pressure inlet (11) is provided on the outer peripheral wall of the furnace body (2); the negative pressure inlet (11) is connected to the air inlet (12) via a negative pressure inlet pipe (13) penetrating the furnace body (2); a negative pressure outlet (14) connected to the central combustion chamber (4) is provided on the sealing wall (3) on the side of the furnace body (2) near the raw material inlet (7); the negative pressure outlet (14) is connected to the air negative pressure fan (16) via a negative pressure outlet pipe (15).

3. The negative pressure air intake device of the multi-tube activation furnace according to claim 2 is characterized in that: The negative pressure inlet (11) is distributed along the circumference of the central combustion chamber (4) and is arranged axially along the central combustion chamber (4) to form a plurality of negative pressure inlet groups (17) distributed along the circumference of the central combustion chamber (4). The negative pressure inlet group (17) is located between two adjacent activation tubes (6).

4. The negative pressure air intake device of the multi-tube activation furnace according to claim 2 is characterized in that: The first negative pressure exhaust gas inlet component (10) includes a closed chamber (18) arranged on the side of the furnace body (2) near the raw material outlet, the closed chamber (18) is connected to the raw material outlet (8) of each activation tube (6), and a discharge port (19) is provided at the bottom end of the closed chamber (18). The sealing wall (3) on the side of the furnace body (2) near the raw material outlet (8) is provided with an exhaust gas inlet (20) connecting the closed chamber (18) and the central combustion chamber (4).

5. The negative pressure air intake device of the multi-tube activation furnace according to claim 4, characterized in that: The air inlet (12) and the tail gas inlet (20) are provided with flow regulating valves, and the tail gas inlet (20) is also provided with a filter assembly (21).

6. The negative pressure air intake device of the multi-tube activation furnace according to claim 5, characterized in that: The filter assembly (21) comprises an exhaust gas inlet pipe (22) arranged in the exhaust gas inlet (20), the exhaust gas inlet pipe (22) has an inlet end extending into the closed chamber (18), and a filter screen (23) is provided in the inlet end of the exhaust gas inlet pipe (22).

7. The negative pressure air intake device of the multi-tube activation furnace according to claim 4, characterized in that: A cooling water tank (24) is provided below the furnace body (2), a water inlet (26) is provided at the top of the cooling water tank (24), a cooling box (25) is provided inside the cooling water tank (24), a feed pipe (27) is provided at the top of the cooling box (25) and is sealed and penetrated through the upper end of the cooling water tank (24) and connected to the discharge port (19), a discharge channel (28) is provided at the bottom of the cooling box (25) and is sealed and penetrated through the lower end of the cooling water tank (24), a discharge valve is provided on the discharge channel (28), and a second negative pressure exhaust gas inlet component (29) is provided between the cooling box (25) and the central combustion chamber (4).

8. The negative pressure air intake device of the multi-tube activation furnace according to claim 7, characterized in that: The second negative pressure exhaust gas inlet component (29) includes an exhaust pipe (30) sealed and penetrated through the upper end of the cooling water tank (24), the exhaust pipe (30) is connected to the top of the cooling box (25), and the exhaust pipe (30) is connected to any air inlet (12) on the outer wall of the furnace body (2) through the exhaust gas negative pressure fan (31).

9. The negative pressure air intake device of the multi-tube activation furnace according to any one of claims 1 to 7, characterized in that: The activation tube (6) is rotationally connected to the sealing wall (3), and an activation tube rotation driving component (32) is provided on one side of the sealing wall (3).

10. The negative pressure air intake device of the multi-tube activation furnace according to claim 9, characterized in that: The activation tube rotation drive assembly (32) includes a transmission gear (33) sleeved on the end of the activation tube (6) near the raw material inlet (7), a rotation driver (34) is provided on the sealing wall (3) on the side of the furnace body (2) near the raw material inlet (7), and a driving gear (35) meshing with the transmission gear (33) on each activation tube (6) is sleeved on the output end of the rotation driver (34), and the driving gear (35) can synchronously drive each activation tube (6) to rotate, and a rotation groove (36) adapted to the activation tube (6) is provided on the sealing wall (3), and a rotation bearing (37) is provided between the rotation groove (36) and the activation tube (6).

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