High-temperature activation furnace for VOC adsorbent production

Abstract

The invention discloses a high-temperature activation furnace for VOC adsorbent production, comprising: a cleaning pool for preliminarily cleaning a VOC adsorption material to dissolve harmful substances adsorbed in the adsorption material; the conveying belt is arranged in the cleaning pool and is used for lifting the adsorption material subjected to primary cleaning from the cleaning pool and transferring the adsorption material to a subsequent treatment position; a feeding hopper is arranged at the top of the feeding bin, and the feeding hopper is located below the discharging end of the conveying belt and used for receiving the cleaned adsorption materials lifted by the conveying belt; a discharge port is formed in one side of the discharge bin, and the discharge bin is used for discharging the dried and activated adsorption material; the drying cylinder is of a horizontally-arranged cylinder structure, a heating pipe is arranged in the drying cylinder and used for heating, and the drying cylinder is rotationally arranged between the feeding bin and the discharging bin; compared with the prior art, the method has the advantages that efficient treatment and product optimization of the VOC adsorption material are achieved, and the design concept of zero emission is achieved through air recycling.

Description

Technical Field

[0001] The invention relates to the technical field of high-temperature activation furnaces, in particular to a high-temperature activation furnace for producing VOC adsorbents. Background Art

[0002] Volatile organic compound (VOC) waste gas is a common air pollutant in industrial production processes, which has a significant negative impact on human health and the ecological environment. VOC waste gas not only causes serious environmental pollution, but also long-term exposure or inhalation can damage the nervous system and hematopoietic function, and even cause cancer and other serious diseases. Therefore, it is of great significance to develop an efficient and environmentally friendly high-temperature activation furnace for the production of VOC adsorbents. It can not only effectively reduce the VOC concentration and achieve standard emission of waste gas, but also realize the recycling of resources by recycling and reusing the adsorbed substances.

[0003] The existing technology mainly regenerates the adsorbent material through a high-temperature activation furnace, which includes a heating tube inside the furnace body to provide the heat required for activation, a feeding mechanism to quantitatively feed the raw materials, and a stirring mechanism to promote uniform heating and reaction of the raw materials in the activation chamber. As the temperature rises, the molecules of harmful substances in the adsorbent material begin to obtain enough energy to overcome the constraints of chemical bonds, resulting in the breaking of chemical bonds and the reorganization of molecular structures, thereby gasifying and separating from the adsorbent material. At the same time, high-temperature activation can also change the pore structure and specific surface area of ​​the raw materials, increasing their adsorption capacity.

[0004] However, during the high-temperature activation process, harmful substances in the raw materials may volatilize and produce harmful gases. If these gases are not handled properly, they can easily cause harm to the environment and human health. In addition, since the internal space of the activation furnace is relatively closed, and components such as the heating tube and the stirring mechanism occupy part of the space, air circulation is blocked. This will affect the full heating and reaction efficiency of the raw materials, and is also not conducive to the discharge of harmful gases. Due to the poor air circulation inside the activation furnace and the poor exhaust gas treatment effect, these harmful substances may be adsorbed by the adsorption material again, resulting in a decrease in the performance of the adsorbent.

[0005] Therefore, it is necessary to provide a high-temperature activation furnace for VOC adsorbent production to solve the problems raised in the above background technology. Summary of the invention

[0006] To achieve the above object, the present invention provides the following technical solution: A high-temperature activation furnace for producing VOC adsorbents, comprising:

[0007] A cleaning tank is used to perform preliminary cleaning of the VOC adsorption material to dissolve the harmful substances adsorbed in the adsorption material;

[0008] A conveyor belt, arranged inside the cleaning tank, is used to lift the initially cleaned adsorption material from the cleaning tank and transfer it to a subsequent processing location;

[0009] A feed bin, with a feed hopper on the top, located below the discharge end of the conveyor belt, for receiving the cleaned adsorption material lifted up by the conveyor belt;

[0010] A discharge bin, one side of which is provided with a discharge port for discharging the adsorption material after drying and activation treatment;

[0011] The drying cylinder is a horizontally arranged cylindrical structure with a heating tube inside for heating. The drying cylinder is rotatably arranged between the feed bin and the discharge bin. The adsorption material entering from the feed bin is dried by its rotation and heating functions, and the harmful substances adsorbed by the adsorption material are further decomposed under high temperature environment, thereby activating the adsorption material.

[0012] Furthermore, the conveyor belt has a water-permeable structure so that water and dissolved harmful substances can be discharged through the conveyor belt during the cleaning process.

[0013] Furthermore, a gear ring is fixed on the outside of the drying cylinder, and a driving motor capable of driving the gear ring is arranged under the drying cylinder.

[0014] Furthermore, an outer tube is provided in the drying cylinder, the outer tube is fixed between the feed bin and the discharge bin, one end of the outer tube passes through the outside of the discharge bin and is connected to an air intake pipe;

[0015] The side wall of the outer tube is provided with an exhaust port connected to the drying cylinder.

[0016] Furthermore, an inner tube is fixed inside the outer tube, and one end of the inner tube penetrates outside the feed bin and is connected to an air intake pipe;

[0017] The side wall of the inner tube is provided with an air inlet connected to the drying cylinder.

[0018] Furthermore, the air inlet and the air outlet are distributed alternately.

[0019] Furthermore, the air intake pipe is connected to the bottom of the absorption tower through a vacuum pump, and the air intake pipe is connected to the top of the absorption tower through a blower. The absorption tower stores a solution for absorbing the decomposed harmful substances.

[0020] Furthermore, spiral blades are distributed on the outer wall of the outer tube, and the spiral blades extend into the feed bin and the discharge bin.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, the use of a cleaning tank and a conveyor belt realizes the preliminary cleaning and efficient transmission of VOC adsorption materials, effectively removing some harmful substances on the surface and inside of the adsorption materials. The heating tube in the drying cylinder is combined with the rotation to ensure that the adsorption materials are evenly heated during the drying process, which not only improves the drying efficiency, but also promotes the further decomposition and activation of harmful substances in the adsorption materials.

[0023] In the present invention, the jet and exhaust design of the inner tube and the outer tube realizes the rapid circulation and efficient utilization of air in the drying cylinder, which not only accelerates the removal of harmful substances, but also can efficiently absorb harmful substances in the air through the solution in the absorption tower, thereby avoiding the discharge of air containing harmful substances to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a high-temperature activation furnace for producing VOC adsorbents;

[0025] Figure 2 It is a structural schematic diagram of a drying cylinder;

[0026] Figure 3 It is a structural schematic diagram of a half-section of a drying cylinder;

[0027] Figure 4 It is a structural schematic diagram of the cross section of the drying cylinder;

[0028] In the figure: 1. cleaning tank; 2. conveyor belt; 3. feed bin; 4. discharge bin; 5. drying cylinder; 51. gear ring; 52. outer tube; 53. inner tube; 54. exhaust port; 55. air inlet; 56. spiral blade; 6. driving motor; 7. suction pipe; 8. air inlet pipe; 9. absorption tower. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 4 In an embodiment of the present invention, a high-temperature activation furnace for producing a VOC adsorbent comprises:

[0030] Cleaning tank 1, used for preliminary cleaning of the VOC adsorption material to dissolve the harmful substances adsorbed in the adsorption material;

[0031] The conveyor belt 2 is arranged inside the cleaning tank 1 and is used to lift the initially cleaned adsorption material from the cleaning tank 1 and transfer it to a subsequent processing location;

[0032] A feed bin 3, with a feed hopper on the top, located below the discharge end of the conveyor belt 2, for receiving the cleaned adsorption material lifted up by the conveyor belt 2;

[0033] A discharge bin 4, one side of which is provided with a discharge port for discharging the adsorption material after drying and activation treatment;

[0034] The drying cylinder 5 is a horizontally arranged cylindrical structure with a heating tube inside for heating. The drying cylinder 5 is rotatably arranged between the feed bin 3 and the discharge bin 4. The adsorption material entering from the feed bin 3 is dried by its rotation and heating functions, and the harmful substances adsorbed by the adsorption material are further decomposed in a high temperature environment, thereby activating the adsorption material.

[0035] The VOC adsorption material is put into the cleaning tank 1 for preliminary cleaning, and the harmful substances adsorbed in the adsorption material are dissolved. The adsorption material is put into the feed bin 3 through the conveyor belt 2, and the adsorption material is dried by rotating and heating the drying cylinder 5. The harmful substances adsorbed by the adsorption material are further decomposed in the high temperature environment, so that the adsorption material is activated, and the activated adsorption material is discharged from the discharge bin 4.

[0036] In this embodiment, the conveyor belt 2 has a water-permeable structure so that water and dissolved harmful substances can be discharged through the conveyor belt 2 during the cleaning process.

[0037] In this embodiment, a ring gear 51 is fixed to the outside of the drying cylinder 5 , and a driving motor 6 capable of driving the ring gear 51 is arranged below the drying cylinder 5 .

[0038] The drying cylinder 5 can be rotated by driving the ring gear 51 through the driving motor 6, so that the adsorption material in the drying cylinder 5 is turned over to be heated evenly.

[0039] In this embodiment, an outer tube 52 is provided in the drying cylinder 5, and the outer tube 52 is fixed between the feed bin 3 and the discharge bin 4. One end of the outer tube 52 passes through the outside of the discharge bin 4 and is connected to the suction pipe 7.

[0040] The side wall of the outer tube 52 is provided with an exhaust port 54 connected to the drying cylinder 5 .

[0041] In this embodiment, an inner tube 53 is fixed inside the outer tube 52, and one end of the inner tube 53 penetrates outside the feed bin 3 and is connected to the air inlet pipe 8;

[0042] The inner tube 53 has an air inlet 55 connected to the drying cylinder 5 on its side wall.

[0043] In this embodiment, the air inlet 55 and the air outlet 54 are distributed alternately.

[0044] In this embodiment, the air intake pipe 7 is connected to the bottom of the absorption tower 9 through a vacuum pump, and the air intake pipe 8 is connected to the top of the absorption tower 9 through a blower. The absorption tower 9 stores a solution for absorbing the decomposed harmful substances.

[0045] That is to say, jets of air and exhaust of air can be respectively injected into the drying cylinder 5 through the outer tube 52 and the inner tube 53, so that the air can flow quickly in the adsorption material to take away harmful substances that are decomposed by heat in the adsorption material, and since the air inlet 55 and the exhaust port 54 are staggered, the air that enters the drying cylinder 5 from the air inlet 55 will be discharged when it moves to the adjacent exhaust port 54 in the drying cylinder 5, thereby preventing the air containing harmful substances from repeatedly flowing in the adsorption material and being re-absorbed by the adsorption material.

[0046] In this embodiment, spiral blades 56 are distributed on the outer wall of the outer tube 52 , and the spiral blades 56 extend into the feed bin 3 and the discharge bin 4 .

[0047] When the drying cylinder 5 rotates, the adsorbent material moves from the feed bin 3 to the discharge bin 4 under the action of the spiral blades 56 to achieve a continuous working effect.

[0048] In the specific implementation, the VOC adsorption material to be treated is put into the cleaning tank 1, and the adsorption material is preliminarily cleaned by the cleaning liquid in the cleaning tank 1 to dissolve the harmful substances adsorbed in the adsorption material;

[0049] Start the conveyor belt 2, lift the preliminarily cleaned adsorption material from the cleaning tank 1 and transfer it to the discharge end of the conveyor belt 2, and the cleaned adsorption material falls into the feed hopper on the top of the feed bin 3 through the discharge end of the conveyor belt 2, ready to enter the drying cylinder 5 for drying and activation treatment;

[0050] The driving motor 6 is started to drive the drying cylinder 5 to rotate through the driving gear ring 51. The adsorption material in the rotating drying cylinder 5 moves from the feed bin 3 to the discharge bin 4 under the action of the spiral blades 56, and the heating tube in the drying cylinder 5 heats and dries the adsorption material;

[0051] Air is sprayed into the drying cylinder 5 through the air inlet 55 of the inner tube 53, and discharged through the air outlet 54 of the outer tube 52, so that the air flows quickly in the adsorption material, and harmful substances decomposed by heating in the adsorption material are taken away. The staggered distribution of the air inlet 55 and the air outlet 54 prevents the air containing harmful substances from repeatedly flowing in the adsorption material and being absorbed again.

[0052] The air containing harmful substances discharged from the exhaust port 54 enters the bottom of the absorption tower 9 through the suction pipe 7, and after being absorbed by the solution, it is re-entered into the drying cylinder 5 from the top of the absorption tower 9 through the intake pipe 8 by the blower for recycling;

[0053] The adsorption material after drying and activation is discharged from the discharge port of the discharge bin 4 and is ready for subsequent packaging, storage or transportation.

[0054] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high temperature activation furnace for VOC adsorbent production, characterized in that: include: A cleaning tank (1) is used to perform preliminary cleaning on the VOC adsorption material to dissolve harmful substances adsorbed in the adsorption material; A conveyor belt (2) is arranged inside the cleaning tank (1) and is used to lift the initially cleaned adsorption material from the cleaning tank (1) and transfer it to a subsequent processing location; A feed bin (3) having a feed hopper disposed on the top thereof, the feed hopper being located below the discharge end of the conveyor belt (2) and being used for receiving the cleaned adsorption material lifted up by the conveyor belt (2); A discharge bin (4) is provided with a discharge port on one side thereof for discharging the adsorption material after being dried and activated; The drying cylinder (5) is a horizontally arranged cylindrical structure, and a heating tube is arranged inside for heating. The drying cylinder (5) is rotatably arranged between the feed bin (3) and the discharge bin (4). The adsorption material entering from the feed bin (3) is dried by its rotation and heating functions, and harmful substances adsorbed by the adsorption material are further decomposed in a high temperature environment, thereby activating the adsorption material.

2. The high-temperature activation furnace for producing VOC adsorbent according to claim 1, characterized in that: The conveyor belt (2) has a water-permeable structure, so that water and dissolved harmful substances can be discharged through the conveyor belt (2) during the cleaning process.

3. The high-temperature activation furnace for producing VOC adsorbent according to claim 1, characterized in that: A ring gear (51) is fixed to the outside of the drying cylinder (5), and a driving motor (6) capable of driving the ring gear (51) is arranged below the drying cylinder (5).

4. The high-temperature activation furnace for producing VOC adsorbent according to claim 1, characterized in that: An outer tube (52) is arranged inside the drying cylinder (5), and the outer tube (52) is fixed between the feed bin (3) and the discharge bin (4), and one end of the outer tube (52) passes through the outside of the discharge bin (4) and is connected to an air intake pipe (7); An exhaust port (54) connected to the drying cylinder (5) is distributed on the side wall of the outer tube (52).

5. The high-temperature activation furnace for producing VOC adsorbent according to claim 4, characterized in that: An inner tube (53) is fixed inside the outer tube (52), and one end of the inner tube (53) penetrates outside the feed bin (3) and is connected to an air intake pipe (8); An air inlet (55) connected to the drying cylinder (5) is distributed on the side wall of the inner tube (53).

6. The high-temperature activation furnace for producing VOC adsorbent according to claim 5, characterized in that: The air inlet (55) and the air outlet (54) are distributed in an alternating manner.

7. The high-temperature activation furnace for producing VOC adsorbent according to claim 5, characterized in that: The air intake pipe (7) is connected to the bottom of the absorption tower (9) through a vacuum pump, and the air intake pipe (8) is connected to the top of the absorption tower (9) through a blower. The absorption tower (9) stores a solution for absorbing decomposed harmful substances.

8. The high-temperature activation furnace for producing VOC adsorbent according to claim 4, characterized in that: The outer wall of the outer tube (52) is provided with spiral blades (56), and the spiral blades (56) extend into the feed bin (3) and the discharge bin (4).

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