A high temperature activation furnace for VOC adsorbent production

Abstract

The present invention discloses a high-temperature activation furnace for producing VOC adsorbents, comprising: a cleaning tank, used for preliminarily cleaning VOC adsorbent materials to dissolve harmful substances adsorbed in the adsorbent materials; a conveyor belt, arranged inside the cleaning tank, used for lifting the preliminarily cleaned adsorbent materials from the cleaning tank and transferring them to a subsequent processing position; a feed bin, a top of which is provided with a feed hopper, the feed hopper is located below the discharge end of the conveyor belt, and is used for receiving the cleaned adsorbent materials lifted by the conveyor belt; a discharge bin, a side of which is provided with a discharge port, used for discharging the adsorbent materials after drying and activation treatment; a drying cylinder, which is a horizontally arranged cylindrical structure, a heating pipe is arranged inside for heating, and the drying cylinder is rotatably arranged between the feed bin and the discharge bin; compared with the prior art, the present invention not only realizes efficient processing and product optimization of VOC adsorbent materials, but also realizes the design concept of zero emission through air circulation.

Description

Technical Field

[0001] This invention relates to the field of high-temperature activation furnace technology, specifically a high-temperature activation furnace for the production of VOC adsorbents. Background Technology

[0002] Volatile organic compounds (VOCs) are common air pollutants in industrial production processes, posing significant negative impacts on human health and the ecological environment. VOCs not only cause severe environmental pollution, but long-term exposure or inhalation can also damage the nervous system and hematopoietic function, even leading to cancer and other serious diseases. Therefore, developing efficient and environmentally friendly high-temperature activation furnaces for VOC adsorbent production is of great significance. These furnaces can effectively reduce VOC concentrations, achieving compliant emissions, and also enable resource recycling through the recovery and reuse of adsorbed substances.

[0003] Existing technologies primarily regenerate adsorbent materials through high-temperature activation furnaces. These furnaces include heating tubes inside the furnace to provide the necessary heat for activation, a feeding mechanism to quantitatively feed in the raw materials, and a stirring mechanism to promote uniform heating and reaction of the raw materials within the activation chamber. As the temperature rises, the molecules of harmful substances in the adsorbent material gain sufficient energy to overcome their chemical bonds, leading to bond breakage and molecular restructuring, thereby vaporizing and detaching from the adsorbent material. Simultaneously, high-temperature activation can alter 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 properly handled, they can easily harm the environment and human health. Furthermore, because the activation furnace is relatively enclosed, and components such as heating tubes and stirring mechanisms occupy some space, air circulation is obstructed. This affects the sufficient heating of the raw materials and the reaction efficiency, and also hinders the discharge of harmful gases. Due to poor air circulation and ineffective waste gas treatment within the activation furnace, these harmful substances may be re-adsorbed by the adsorbent material, leading to a decline in the adsorbent's performance.

[0005] Therefore, it is necessary to provide a high-temperature activation furnace for the production of VOC adsorbents to solve the problems mentioned in the background art. Summary of the Invention

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature activation furnace for VOC adsorbent production, comprising:

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

[0008] A conveyor belt, located inside the cleaning tank, is used to lift and transfer the pre-cleaned adsorbent material from the cleaning tank to the subsequent processing location.

[0009] The feeding hopper is located on top of the feeding bin and is positioned below the discharge end of the conveyor belt. It is used to receive the cleaned adsorbent material that is lifted up by the conveyor belt.

[0010] The discharge hopper has a discharge port on one side for discharging the adsorbent material that has been dried and activated.

[0011] The drying cylinder is a horizontally arranged cylindrical structure with a heating tube inside for heating. The drying cylinder is rotatably positioned between the feed hopper and the discharge hopper. Through its rotation and heating functions, it dries the adsorbent material entering from the feed hopper and promotes the further decomposition of harmful substances adsorbed by the adsorbent material in a high-temperature environment, thereby activating the adsorbent material.

[0012] Furthermore, the conveyor belt has a water-permeable structure to facilitate the discharge of water and dissolved harmful substances during the cleaning process.

[0013] Furthermore, a toothed ring is fixed to the outside of the drying cylinder, and a drive motor capable of driving the toothed ring is provided below the drying cylinder.

[0014] Furthermore, an outer tube is provided inside the drying cylinder, the outer tube is fixed between the feed hopper and the discharge hopper, and one end of the outer tube extends through the discharge hopper and is connected to an air suction pipe;

[0015] The outer tube has exhaust ports distributed on its sidewalls that connect to the drying cylinder.

[0016] Furthermore, an inner tube is fixed inside the outer tube, and one end of the inner tube extends through the outside of the feed hopper and is connected to an air inlet pipe;

[0017] The inner tube has air inlets distributed on its sidewalls that connect to the drying cylinder.

[0018] Furthermore, the air inlet and the exhaust outlet are staggered.

[0019] Furthermore, the suction pipe is connected to the bottom of the absorption tower via a vacuum pump, and the air inlet pipe is connected to the top of the absorption tower via a blower. The absorption tower contains a solution for absorbing and decomposing harmful substances.

[0020] Furthermore, the outer wall of the outer tube is provided with helical blades, which extend into the feed hopper and the discharge hopper.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] In this invention, the use of a cleaning tank and a conveyor belt enables preliminary cleaning and efficient transport of VOC adsorption materials, effectively removing some harmful substances from the surface and interior of the adsorption materials. The heating tube and rotation inside the drying cylinder ensure uniform heating of the adsorption materials during the drying process, which not only improves drying efficiency but also promotes further decomposition and activation of harmful substances within the adsorption materials.

[0023] In this invention, the jetting and exhausting design of the inner and outer pipes enables rapid circulation and efficient utilization of air within the drying cylinder. This not only accelerates the removal of harmful substances but also allows the solution within the absorption tower to efficiently absorb harmful substances from the air, preventing the release of air containing harmful substances to the outside. Attached Figure Description

[0024] Figure 1 A schematic diagram of a high-temperature activation furnace for the production of VOC adsorbents;

[0025] Figure 2 This is a schematic diagram of the drying cylinder.

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

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

[0028] In the diagram: 1. Washing tank; 2. Conveyor belt; 3. Feed hopper; 4. Discharge hopper; 5. Drying cylinder; 51. Gear ring; 52. Outer pipe; 53. Inner pipe; 54. Exhaust port; 55. Air inlet; 56. Spiral blade; 6. Drive motor; 7. Suction pipe; 8. Air inlet pipe; 9. Absorption tower. Detailed Implementation

[0029] Please see Figures 1-4 In this embodiment of the invention, a high-temperature activation furnace for VOC adsorbent production includes:

[0030] Cleaning tank 1 is used to perform preliminary cleaning of VOC adsorption materials in order to dissolve the harmful substances adsorbed in the adsorption materials;

[0031] Conveyor belt 2, located inside the cleaning tank 1, is used to lift the pre-cleaned adsorbent material from the cleaning tank 1 and transfer it to the subsequent processing location.

[0032] The feeding bin 3 has a feeding hopper on its top, which is located below the discharge end of the conveyor belt 2 and is used to receive the cleaned adsorbent material lifted up by the conveyor belt 2.

[0033] The discharge hopper 4 has a discharge port on one side for discharging the adsorbent 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 positioned between the feed hopper 3 and the discharge hopper 4. Through its rotation and heating functions, it dries the adsorbent material entering from the feed hopper 3 and promotes the further decomposition of harmful substances adsorbed by the adsorbent material under high temperature environment, thereby activating the adsorbent material.

[0035] The VOC adsorbent material is initially cleaned in the cleaning tank 1 to dissolve the harmful substances adsorbed in the adsorbent material. The adsorbent material is then fed into the feed hopper 3 via the conveyor belt 2. The adsorbent material is dried by rotating and heating the drying cylinder 5. Under high temperature, the harmful substances adsorbed by the adsorbent material are further decomposed, thereby activating the adsorbent material. The activated adsorbent material is then discharged from the discharge hopper 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 toothed ring 51 is fixed to the outside of the drying cylinder 5, and a drive motor 6 capable of driving the toothed ring 51 is provided below the drying cylinder 5.

[0038] The drying cylinder 5 can be rotated by the drive motor 6 driving the gear ring 51, thereby turning the adsorbent material inside the drying cylinder 5 so that it can be heated evenly.

[0039] In this embodiment, an outer tube 52 is provided inside the drying cylinder 5. The outer tube 52 is fixed between the feeding chamber 3 and the discharging chamber 4. One end of the outer tube 52 extends through the outside of the discharging chamber 4 and is connected to a suction pipe 7.

[0040] The outer tube 52 has exhaust ports 54 distributed on its side wall, which are 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 extends through the outside of the feed hopper 3 and is connected to an air inlet pipe 8.

[0042] The inner tube 53 has air inlets 55 distributed on its sidewalls, which connect to the drying cylinder 5.

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

[0044] In this embodiment, the suction pipe 7 is connected to the bottom of the absorption tower 9 via a vacuum pump, and the air inlet pipe 8 is connected to the top of the absorption tower 9 via a blower. The absorption tower 9 contains a solution for absorbing and decomposing harmful substances.

[0045] In other words, the outer pipe 52 and the inner pipe 53 can respectively spray air into the drying cylinder 5 and exhaust air into the drying cylinder 5, so that the air flows rapidly in the adsorbent material to carry away the harmful substances that are decomposed by heating in the adsorbent material. Furthermore, since the air inlet 55 and the exhaust outlet 54 are staggered, the air entering the drying cylinder 5 from the air inlet 55 will be discharged when it moves to the adjacent exhaust outlet 54 in the drying cylinder 5, thus preventing the air containing harmful substances from repeatedly flowing in the adsorbent material and being reabsorbed by the adsorbent material.

[0046] In this embodiment, the outer wall of the outer tube 52 is provided with spiral blades 56, which 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 chamber 3 to the discharge chamber 4 under the action of the spiral blades 56, so as to achieve the effect of continuous operation.

[0048] In practice, the VOC adsorption material to be treated is put into the cleaning tank 1, and the cleaning liquid in the cleaning tank 1 is used to preliminarily clean the adsorption material and dissolve the harmful substances adsorbed in the adsorption material.

[0049] Start the conveyor belt 2 to lift the pre-cleaned adsorbent material from the cleaning tank 1 and transfer it to the discharge end of the conveyor belt 2. The cleaned adsorbent material falls into the feed hopper at 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] Start the drive motor 6, which drives the drying cylinder 5 to rotate via the drive gear ring 51. The adsorbent material inside 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 inside the drying cylinder 5 heats and dries the adsorbent material.

[0051] Air is sprayed into the drying cylinder 5 through the air inlet 55 of the inner tube 53 and discharged through the exhaust port 54 of the outer tube 52, forming a rapid flow of air in the adsorbent material, which carries away the harmful substances that are decomposed by heating in the adsorbent material. The staggered distribution of the air inlet 55 and the exhaust port 54 avoids the air containing harmful substances from repeatedly flowing in the adsorbent material and being reabsorbed.

[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 treated by the solution absorption, it is re-entered into the drying cylinder 5 from the top of the absorption tower 9 through the air inlet pipe 8 by the blower for recycling.

[0053] The adsorbent material, after being dried and activated, is discharged from the outlet of discharge hopper 4, ready for subsequent packaging, storage or transportation.

[0054] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection 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 its top, the feed hopper being located below the discharge end of the conveyor belt (2) and being used to receive 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 drying and activation treatment; 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), and dries the adsorption material entering from the feed bin (3) through its rotation and heating functions, and further decomposes the harmful substances adsorbed by the adsorption material in a high temperature environment, thereby activating the adsorption material; An outer tube (52) is provided 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 provided on the side wall of the outer tube (52); 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 provided on the side wall of the inner tube (53); The air inlet (55) and the air outlet (54) are distributed in an alternating manner.

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 gear ring (51) is fixed to the outside of the drying cylinder (5), and a drive motor (6) capable of driving the gear ring (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: The air intake pipe (7) is connected to the bottom of the absorption tower (9) via a vacuum pump, and the air intake pipe (8) is connected to the top of the absorption tower (9) via a blower. The absorption tower (9) stores a solution for absorbing decomposed harmful substances.

5. The high-temperature activation furnace for producing VOC adsorbent according to claim 1, 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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