Activated carbon carbonization furnace tail gas treatment device

Abstract

This utility model relates to the field of carbonization furnace exhaust gas treatment technology, specifically a device for treating exhaust gas from an activated carbon carbonization furnace. It includes a treatment box with a T-shaped partition inside, dividing the internal space into an upper heat recovery chamber and two lower water purification chambers. Two interconnected serpentine tubes are fixedly connected inside the heat recovery chamber, with one end of each tube connected to an inlet pipe that communicates with the carbonization furnace exhaust gas pipe. In this utility model, by arranging multiple serpentine tubes at the top of the treatment box, with fins fixed to the outer side of each tube, the exhaust gas first releases heat at the serpentine tubes. This released heat can be used to heat-treat the material to be carbonized, achieving a certain degree of heat recovery from the exhaust gas. The exhaust gas, after heat recovery, is no longer directly injected into the water, effectively preventing excessively high water temperatures from reducing water solubility.

Description

Technical Field

[0001] This utility model relates to the field of carbonization furnace tail gas treatment technology, specifically a device for treating tail gas from activated carbon carbonization furnaces. Background Technology

[0002] A carbonization furnace is a device that heats and decomposes organic matter under air-isolated conditions. Through high-temperature heating, the carbonization furnace can convert biomass materials such as fruit shells, straw, and wood into high-value-added activated carbon, biochar, and other carbon products. At the same time, it produces combustible gases composed of carbon monoxide, methane, oxygen, and other gases. The combustible gases are mainly found in the tail gas of the carbonization furnace. In order to recover and utilize the combustible gases in the tail gas, the tail gas treatment device often passes the tail gas into water. The water absorbs harmful gases such as hydrogen cyanide and sulfur dioxide by solubility and removes dust and impurity particles from the tail gas by washing action.

[0003] While most exhaust gas treatment devices can use water to purify exhaust gases, they cannot recover the heat from the exhaust gases. Exhaust gases carrying heat are directly discharged into the water, causing the water temperature to rise. This increased water temperature reduces the water's solubility, necessitating frequent replacement with low-temperature water for purification. Recycling high-temperature water into low-temperature water also increases the load on water cooling equipment. Furthermore, exhaust gases carrying dust and impurities are directly discharged into the water, increasing its turbidity and causing subsequent filter screens, filter cartridges, and other water filtration equipment to become clogged, reducing filtration efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a device for treating the exhaust gas of an activated carbon carbonization furnace, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for treating exhaust gas from an activated carbon carbonization furnace, comprising:

[0007] The processing box has a T-shaped partition fixed inside, which divides the internal space of the processing box into a heat recovery chamber and two water purification chambers.

[0008] Two interconnected serpentine tubes are fixed inside the heat recovery chamber. Fins are fixed on the outside of the serpentine tubes. One end of one of the serpentine tubes is connected to an air inlet pipe that is connected to the tail gas pipe of the carbonization furnace.

[0009] An irregularly shaped tube is connected and fixed to another serpentine tube, and the bottom of the irregularly shaped tube is connected and fixed to two bends.

[0010] Two filter components are respectively arranged below the bend in the corresponding position. Each filter component includes a connecting pipe that is fixedly connected to the bend, and a filter box is fixedly connected to the bottom of the connecting pipe.

[0011] An air extraction assembly is used to extract combustible gases from inside two water purification chambers. The air extraction assembly includes a main pipe that is fixedly connected to the two water purification chambers, and a branch pipe is fixedly connected to the outside of the main pipe.

[0012] Furthermore, the serpentine tube is fixedly installed with the processing box, a mesh plate is fixed to the top of the fins, and a door panel is hinged to the opening of the heat recovery chamber.

[0013] Furthermore, the water purification chamber has a detachable cover plate installed at its opening, and the bottom of the treatment box has two C-shaped tubes fixedly connected to it, with the two ends of the C-shaped tubes respectively connected to the water purification chamber at the corresponding positions.

[0014] Furthermore, an air pump is installed on the outside of the main pipe, and a slotted hole is opened on the outside of the main pipe.

[0015] Furthermore, the filter box includes a mounting plate that is detachably installed with the connecting pipe, a rectangular frame is fixedly mounted on the bottom surface of the mounting plate, and a filter screen is fixedly mounted on the outer side of the rectangular frame.

[0016] Furthermore, an opening and closing assembly is provided between the first bend and the connecting pipe, the opening and closing assembly being able to control the connection and disconnection between the connecting pipe and the first bend, the opening and closing assembly comprising:

[0017] The second bend is connected and fixed to the connecting pipe, and a threaded pipe is screwed onto the outside of the connecting pipe;

[0018] The opening and closing box is fixedly connected to one end of the bend pipe, and the other end of the opening and closing box is fixedly connected to a connecting pipe that is connected to the second bend pipe.

[0019] Furthermore, one end of the second bend is fixed with a connecting shaft, and a baffle is hinged inside the opening and closing box.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. Two interconnected serpentine tubes are fixed inside the heat recovery chamber of the processing box. Multiple fins are fixed on the outside of the serpentine tubes. The tail gas pipe of the carbonization furnace delivers the tail gas into the inside of the serpentine tubes. The fins release the heat in the tail gas into the heat recovery chamber, making the heat recovery chamber a high-temperature environment. The material to be carbonized can be placed on the mesh plate of the heat recovery chamber for preheating treatment. The multiple bends of the serpentine tubes can increase the flow path of the tail gas inside the heat recovery chamber, which helps to fully preheat the tail gas and remove the moisture in the material to be carbonized, thereby improving thermal efficiency and reducing the energy consumption of carbonization in the later stage.

[0022] 2. The serpentine tube inside the heat recovery chamber absorbs a large amount of heat from the exhaust gas, preventing the exhaust gas from being directly discharged into the water with heat, thus raising the water temperature. This helps the water inside the water purification chamber to fully absorb harmful gases such as hydrogen cyanide and sulfur dioxide from the exhaust gas, and also helps to reduce the load on the external water cooling equipment to convert high-temperature water into low-temperature water.

[0023] 3. The irregularly shaped pipe delivers the exhaust gas to the connecting pipe via a bend, and the connecting pipe delivers the exhaust gas to the filter box. A filter screen capable of filtering smoke and dust particles is installed and fixed on the outside of the filter box, so that the exhaust gas entering the water is pre-filtered, effectively preventing impurities in the exhaust gas from increasing the turbidity of the water. By designing two water purification chambers inside the treatment box, each of which contains a filter box capable of filtering exhaust gas, it is possible to ensure that when one filter box is replaced, the other filter box can continue to filter exhaust gas, so that the two processes of filter box replacement and exhaust gas filtration do not affect each other. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the utility model and the carbonization furnace;

[0025] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the processing box of this utility model;

[0027] Figure 4 This is a schematic diagram of the serpentine tube, fins, and irregularly shaped tube structure in this utility model;

[0028] Figure 5 This is a schematic diagram of the irregularly shaped tube and filter assembly structure in this utility model;

[0029] Figure 6 This is a utility model Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0030] In the diagram: 100, processing box; 110, T-shaped partition; 120, mesh plate; 130, door panel; 140, cover plate; 150, C-shaped tube; 200, serpentine tube; 210, fins; 220, air inlet pipe; 300, irregularly shaped tube; 310, bend one; 400, filter assembly; 410, connecting pipe; 420, filter box; 421, mounting plate; 422, rectangular frame; 423, filter screen; 500, air extraction assembly; 510, main pipe; 511, slotted hole; 520, branch pipe; 530, air extraction pump; 600, opening and closing assembly; 610, bend two; 611, connecting shaft; 620, opening and closing box; 621, baffle; 630, threaded pipe; 640, connecting pipe. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1, please refer to Figure 1 - Figure 6 In this embodiment of the present invention, an activated carbon carbonization furnace tail gas treatment device includes a treatment box 100. A T-shaped partition 110 is fixed inside the treatment box 100, dividing the internal space of the treatment box 100 into an upper heat recovery chamber and two lower water purification chambers. Two interconnected serpentine tubes 200 are fixedly connected inside the heat recovery chamber. Fins 210 are fixed to the outer side of each serpentine tube 200. One end of one serpentine tube 200 is connected to an air inlet pipe 220 that communicates with the tail gas pipe of the carbonization furnace, and the other serpentine tube... A shaped pipe 300 is fixedly connected to the bottom of the pipe 200. Two bends 310 are fixedly connected to the bottom of the shaped pipe 300. A filter assembly 400 is arranged below the bends 310. The filter assembly 400 includes a connecting pipe 410 fixedly connected to the bends 310. A filter box 420 is fixedly connected to the bottom of the connecting pipe 410. An air extraction assembly 500 is provided on the outside of the treatment box 100. The air extraction assembly 500 includes a main pipe 510 fixedly connected to the two water purification chambers. A branch pipe 520 is fixedly connected to the outside of the main pipe 510.

[0033] Specifically, by arranging multiple serpentine tubes 200 on the top of the treatment chamber 100, with fins 210 fixed to the outside of the serpentine tubes 200, the exhaust gas first releases heat at the serpentine tubes 200. The released heat can be used for heat treatment of the material to be carbonized, thus realizing the recovery and utilization of heat in the exhaust gas to a certain extent. The exhaust gas after heat recovery is no longer directly injected into the water with heat, which can effectively prevent the water temperature from being too high and causing a decrease in water solubility. By arranging two filter boxes 420 inside the water purification chamber, the exhaust gas is pre-filtered by the filter boxes 420 before entering the water, so that the filter boxes 420 can intercept impurity particles in the exhaust gas, preventing impurity particles from entering the water and causing water turbidity, and also preventing impurity particles in the water from clogging the external water filtration equipment used for circulating water.

[0034] like Figure 2 and Figure 3As shown, in this embodiment, the serpentine tube 200 is fixedly installed with the processing box 100, and a mesh plate 120 is fixed on the top of the fin 210. The permeability of the mesh plate 120 facilitates the transfer of heat to the material to be carbonized. A door plate 130 is hinged to the opening of the heat recovery chamber. The material to be carbonized is placed on the mesh plate 120 by opening the door plate 130, and then the door plate 130 is closed to facilitate the preheating treatment of the material to be carbonized inside the processing box 100.

[0035] In this embodiment, a cover plate 140 is detachably installed at the opening of the water purification chamber. In the initial state, the cover plate 140 is sealed on the outside of the water purification chamber of the treatment tank 100, so that the combustible gas floating in the water is pumped out of the treatment tank 100 through the main pipe 510. When it is necessary to replace the filter assembly 400, the cover plate 140 can be opened to facilitate the replacement of the filter assembly 400 through the space opened by the cover plate 140.

[0036] like Figure 2 As shown, in this embodiment, the bottom of the treatment tank 100 is connected to two C-shaped tubes 150. The two ends of the C-shaped tubes 150 are respectively connected to the water purification chambers at corresponding positions. One of the C-shaped tubes 150 is connected to an external water pumping pipe for injecting water into the two water purification chambers, and the other C-shaped tube 150 is connected to an external water suction pipe for pumping water into the two water purification chambers, which facilitates the replacement of water in the water purification tank.

[0037] like Figure 1 and Figure 2 As shown, in this embodiment, an air pump 530 is fixedly installed on the outside of the main pipe 510, and a slotted hole 511 is opened on the outside of the main pipe 510, referring to... Figure 3 The slotted hole 511 is connected to one water purification chamber, and one end of the main pipe 510 is connected to another water purification chamber. When the air pump 530 is working, it can draw out the gas that floats out of the water inside the two water purification chambers through the main pipe 510.

[0038] In this embodiment, refer to Figure 1 One end of the main pipe 510 can be connected to the combustion chamber of the carbonization furnace. Opening the valve at one end of the main pipe 510 allows combustible gas to enter the carbonization furnace for secondary combustion and utilization. Opening the valve on the branch pipe 520 allows combustible gas to be recovered into external gas tanks or other containers.

[0039] like Figure 4 As shown, in this embodiment, the filter box 420 includes a mounting plate 421 that is screwed onto the connecting pipe 410. A rectangular frame 422 is detachably mounted on the bottom surface of the mounting plate 421. A filter screen 423 is mounted on the outside of the rectangular frame 422. The filter screen 423 can be an activated carbon filter screen 423, a honeycomb activated carbon filter screen 423, etc. The specific material selection will not be elaborated.

[0040] In Example 2, based on Example 1, in order to achieve automatic connection between the connecting pipe 410 and the bend 310 when the connecting pipe 410 on the filter assembly 400 is connected, and automatic closure of the bend 310 port when the connecting pipe 410 and the bend 310 on the filter assembly 400 are disconnected, so as to prevent exhaust gas from leaking without passing through the filter assembly 400.

[0041] like Figure 4 and Figure 5 As shown, in this embodiment, an opening and closing assembly 600 is provided between the first bend 310 and the connecting pipe 410. The opening and closing assembly 600 includes a second bend 610 that is fixedly connected to the connecting pipe 410. A threaded pipe 630 is screwed onto the outside of the connecting pipe 410. The opening and closing assembly 600 also includes an opening and closing box 620 that is fixedly connected to the first bend 310. One end of the opening and closing box 620 is fixedly connected to a connecting pipe 640 that is connected to the second bend 610.

[0042] In this embodiment, a connecting shaft 611 is fixed to one end of the second bend 610, and a baffle 621 is hinged inside the opening and closing box 620. During the process of connecting the second bend 610 to the opening of the connecting pipe 640, the connecting shaft 611 is inserted into the opening and closing box 620, and the connecting shaft 611 opens the baffle 621, so that the second bend 610 is connected to the first bend 310 through the connecting pipe 640. The second bend 610 facilitates the transmission of the exhaust gas in the first bend 310 to the filter box 420 for filtration through the connecting pipe 410. Finally, the threaded pipe 630 is screwed and installed between the connecting pipe 640 and the second bend 610 by rotating the threaded pipe 630, so that the filter assembly 400 is connected and installed to one end of the first bend 310 through the second bend 610.

[0043] In this embodiment, when disassembling the filter assembly 400, the threaded pipe 630 is first rotated away from the connecting pipe 640, and then the connecting shaft 611 is moved away from the baffle 621 by moving the second bend pipe 610. Under its own gravity, the baffle 621 will automatically fall to one end of the connecting pipe 640, thereby sealing the connecting pipe 640 to block the first bend pipe 310 and preventing the first bend pipe 310 from leaking exhaust gas after the filter assembly 400 is disassembled.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for treating tail gas from an activated carbon carbonization furnace, characterized in that, include: The processing box (100) has a T-shaped partition (110) fixed inside, which divides the internal space of the processing box (100) into a heat recovery chamber and two water purification chambers; Two interconnected serpentine tubes (200) are fixed inside the heat recovery chamber. Fins (210) are fixed on the outside of the serpentine tubes (200). One end of one of the serpentine tubes (200) is connected to an air inlet pipe (220) that is connected to the tail gas pipe of the carbonization furnace. The irregular tube (300) is connected and fixed to another serpentine tube (200), and the bottom of the irregular tube (300) is connected and fixed to two bends (310). Two filter components (400) are respectively arranged below the bend pipe (310) at corresponding positions. The filter component (400) includes a connecting pipe (410) that is fixedly connected to the bend pipe (310). The bottom of the connecting pipe (410) is fixedly connected to a filter box (420). The air extraction assembly (500) is used to extract combustible gas inside the two water purification chambers. The air extraction assembly (500) includes a main pipe (510) that is fixedly connected to the two water purification chambers. A branch pipe (520) is fixedly connected to the outside of the main pipe (510).

2. The activated carbon carbonization furnace tail gas treatment device according to claim 1, characterized in that, The serpentine tube (200) is fixedly installed with the processing box (100), a mesh plate (120) is fixed to the top of the fin (210), and a door plate (130) is hinged to the opening of the heat recovery chamber.

3. The activated carbon carbonization furnace tail gas treatment device according to claim 1, characterized in that, The water purification chamber has a detachable cover plate (140) installed at its opening. The bottom of the treatment box (100) is connected to two C-shaped tubes (150), and the two ends of the C-shaped tubes (150) are respectively connected to the water purification chamber at the corresponding positions.

4. The activated carbon carbonization furnace tail gas treatment device according to claim 1, characterized in that, An air pump (530) is installed on the outside of the main pipe (510), and a slotted hole (511) is opened on the outside of the main pipe (510).

5. The activated carbon carbonization furnace tail gas treatment device according to claim 1, characterized in that, The filter box (420) includes a mounting plate (421) that is detachably installed with the connecting pipe (410). A rectangular frame (422) is fixedly mounted on the bottom surface of the mounting plate (421), and a filter screen (423) is fixedly mounted on the outside of the rectangular frame (422).

6. The activated carbon carbonization furnace tail gas treatment device according to claim 1 or 5, characterized in that, An opening and closing assembly (600) is provided between the first bend (310) and the connecting pipe (410). The opening and closing assembly (600) can control the connection and disconnection between the connecting pipe and the first bend (310). The opening and closing assembly (600) includes: The second bend (610) is connected and fixed to the connecting pipe (410), and the outer side of the connecting pipe (410) is screwed with a threaded pipe (630). The opening and closing box (620) is connected and fixed at one end to the first bend (310), and the other end of the opening and closing box (620) is connected and fixed to the connecting pipe (640) which is connected to the second bend (610).

7. The activated carbon carbonization furnace tail gas treatment device according to claim 6, characterized in that, One end of the second bend (610) is fixed with a connecting shaft (611), and a baffle (621) is hinged inside the opening and closing box (620).

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