Smoke filtering and ash removing device of soft felt continuous carbonization furnace

Abstract

The utility model relates to a flue gas filtering and deashing device of a soft felt continuous carbonization furnace. The flue gas filtering and deashing device comprises a sealed box body, a filtering assembly and a deashing assembly, the filter assembly comprises a translation frame and a filter screen; the ash cleaning assembly comprises an ash scraping plate and an ash receiving groove; the translation frame and the ash receiving groove are both of a pull-out structure; the ash scraping plate is arranged in the sealing box body below the moving-out side of the translation frame; the internal space of the sealed box body above the filter screen is a gas purification chamber; the internal space of the sealed box body below the filter screen and above the dust receiving groove is a waste gas chamber, and the residual lower space of the sealed box body is a dust chamber; one side of the sealed box is provided with an air inlet, and the top of the sealed box is provided with an air The smoke filtering and ash removing device has the functions of removing dust and tar, has the advantages of being small in size, free of water, capable of removing ash on line and the like compared with a wet-type electric dust remover, can effectively solve the problem that a smoke exhaust pipeline is blocked in the soft felt carbonization process, and improves the environmental protection level while ensuring production continuity.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas purification, in particular to a flue gas filtering and dust cleaning device for a soft felt continuous carbonization furnace. Background Art

[0002] Soft felt, also known as carbon felt, is made of carbon fibers. Activated carbon fiber felt has a broad spectrum of adsorption and a large capacity. Its adsorption capacity for organic vapors such as gasoline, aldehydes, phenols, alcohols, and olefins is several to dozens of times greater than that of activated carbon (GAC). It also has good adsorption properties for inorganic gases (such as NO, N, HF, HCl, etc.). Carbon felt is often used as insulation material for vacuum furnaces and inert gas furnaces, filter material for hot gases or liquids and molten metals, porous electrodes for fuel cells, catalyst carriers, linings for corrosion-resistant container composite materials, and composite materials.

[0003] The preparation method of soft felt includes the following steps: (1) forming a web of carbon short filaments through airflow and then needle punching; (2) carbonizing the pre-oxidized filaments; and (3) graphitizing. During the carbonization process, a large amount of dust and tar are generated. These substances enter the exhaust pipe and gradually accumulate, causing blockage of the exhaust pipe. This not only reduces work efficiency but may also cause safety accidents. Therefore, a device is needed to reduce the emission of dust and tar and keep the exhaust pipe unobstructed.

[0004] There are already some methods for treating dust and tar generated in industrial processes. For example, in the carbonization process of soft felt, wet electrostatic precipitators are used to purify flue gas, thereby reducing dust and tar emissions. Wet electrostatic precipitators use water or chemical solutions to capture and separate particulate matter to purify flue gas. However, wet electrostatic precipitators are large in size and occupy a large area, which is not conducive to the modification and installation of existing production lines. Secondly, wet electrostatic precipitators require the use of large amounts of water or chemical solutions, resulting in water resource waste and environmental pollution. In addition, wet electrostatic precipitators cannot achieve online cleaning and need to be shut down for cleaning, which affects the continuity of the production process.

[0005] In summary, it is necessary to develop a new type of online cleaning device to capture dust and tar during the carbonization process of soft felt and achieve pollution-free emissions. Summary of the Invention

[0006] The utility model provides a flue gas filtering and cleaning device for a soft felt continuous carbonization furnace, which has the function of removing dust and tar. Compared with a wet electrostatic precipitator, it has the advantages of small device size, no need for water, and the ability to clean online. It can effectively solve the problem of smoke exhaust pipeline blockage during the soft felt carbonization process, ensure production continuity, and improve the level of environmental protection.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A flue gas filtering and cleaning device for a soft felt continuous carbonization furnace is arranged at the flue gas outlet of the soft felt continuous carbonization furnace; it includes a sealed box, a filter assembly and a cleaning assembly; the filter assembly includes a translation frame and a filter screen, and the filter screen is detachably arranged in the translation frame; the cleaning assembly includes a scraper plate and an ash receiving trough; the translation frame and the ash receiving trough are both pull-out structures, which can be pushed in or moved out from one side of the sealed box; the scraper plate is arranged in the sealed box below the moving-out side of the translation frame, and the scraper plate contacts the bottom of the filter screen; the internal space of the sealed box above the filter screen is a clean air chamber; the internal space of the sealed box below the filter screen and above the ash receiving trough is an exhaust gas chamber, and the remaining lower space of the sealed box is a dust chamber; an air inlet is provided on one side of the sealed box corresponding to the exhaust gas chamber, and an air outlet is provided on the top of the sealed box.

[0009] Furthermore, the sealed box body is provided with a plurality of filtering and cleaning units, and the plurality of filtering and cleaning units are arranged side by side along the direction of flue gas entry; each filtering and cleaning unit is provided with a filtering component and a cleaning component; a filter net is installed in the translation frame of one of the filtering and cleaning units, and blocking baffles are installed in the translation frames of the remaining filtering and cleaning units.

[0010] Furthermore, the sealing box body is provided with slideways at the connection positions corresponding to the translation frame and the ash receiving trough, and the translation frame and the ash receiving trough are provided with slide rails respectively to cooperate with the slideways for sliding connection.

[0011] Furthermore, the translation frame and the ash receiving trough are respectively provided with handles on the outer surfaces of the removal sides; and high-temperature resistant sealing strips are respectively provided between the other three side surfaces and the sealing box body.

[0012] Furthermore, the air inlet is connected to the flue gas outlet of the soft felt continuous carbonization furnace through an air inlet pipe, and the air outlet is connected to the external clean flue gas pipeline through an air outlet pipe; both the air inlet pipe and the air outlet pipe are made of high-temperature resistant flexible pipes.

[0013] Furthermore, the filter screen is composed of several layers of stainless steel metal mesh; and the mesh diameter of the stainless steel metal mesh gradually decreases from bottom to top.

[0014] Furthermore, the blocking baffle is a stainless steel plate.

[0015] Furthermore, the ash receiving trough is a drawer-type structure and is made of stainless steel plate.

[0016] Furthermore, the scraping plates are arranged in 2 to 3 rows along the moving direction of the translation frame, the width of the scraping plates is the same as the width of the filter screen, and the scraping plates are made of stainless steel plates.

[0017] Furthermore, the dust cleaning component also includes a compressed air blowing pipe, which is arranged in a sealed box above the translation frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1) The flue gas filtration and cleaning device can remove most of the dust and tar, effectively reducing the problem of blockage in the exhaust pipe. Compared with the existing wet electrostatic precipitator or bag filter, it has the advantages of simple structure, easy operation, and the ability to achieve online cleaning.

[0020] 2) Compared with existing wet electrostatic precipitators or bag dust collectors, the flue gas filtering and cleaning device of the present invention is small in size, occupies less space, and is not easy to clog. It is not only suitable for setting up with new production lines, but also conducive to upgrading and transforming existing production lines.

[0021] 3) Compared with a wet electrostatic precipitator, the flue gas filtering and cleaning device of the present invention does not require a large amount of water or chemical solution, thus reducing the waste of water resources and environmental pollution.

[0022] 4) The flue gas filtration and cleaning device can realize online cleaning without stopping the equipment for cleaning, which does not affect the continuous production process and ensures the production efficiency of the soft felt continuous carbonization furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an outline diagram of the flue gas filtering and cleaning device described in the present utility model.

[0024] Figure 2 It is a front cross-sectional view of the flue gas filtering and cleaning device described in the present invention.

[0025] Figure 3 yes Figure 2 AA section view in.

[0026] Figure 4 yes Figure 2 BB cross-section view in.

[0027] In the figure: 1. Sealing box 2. Inlet pipe 3. Outlet pipe 4. Translation frame 5. Filter 6. Blocking baffle 7. High-temperature resistant sealing strip 8. Ash receiving trough 9. Ash scraper DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0029] like Figures 1-4As shown, the utility model describes a flue gas filtering and cleaning device for a soft felt continuous carbonization furnace, which is arranged at the flue gas outlet of the soft felt continuous carbonization furnace; it includes a sealed box body 1, a filter assembly and a dust cleaning assembly; the filter assembly includes a translation frame and a filter screen 5, and the filter screen 5 is detachably arranged in the translation frame; the dust cleaning assembly includes a scraper plate 9 and an dust collecting trough 8; the translation frame and the dust collecting trough 8 are both pull-out structures, which can be pushed in or moved out from one side of the sealed box body 1; the scraper plate 9 is arranged in the sealed box body 1 below the moving-out side of the translation frame, and the scraper plate 9 contacts the bottom of the filter screen 5; the internal space of the sealed box body 1 above the filter screen 5 is a clean air chamber; the internal space of the sealed box body 1 below the filter screen 5 and above the dust collecting trough 8 is an exhaust gas chamber, and the remaining lower space of the sealed box body 1 is a dust chamber; an air inlet is provided on one side of the sealed box body 1 corresponding to the exhaust gas chamber, and an air outlet is provided on the top of the sealed box body 1.

[0030] Furthermore, the sealed box body 1 is provided with a plurality of filtering and cleaning units, and the plurality of filtering and cleaning units are arranged side by side along the direction of flue gas entry; each filtering and cleaning unit is provided with a filtering component and a cleaning component; a filter screen 5 is installed in the translation frame of one of the filtering and cleaning units, and blocking baffles 6 are installed in the translation frames of the remaining filtering and cleaning units.

[0031] Furthermore, the sealing box body 1 is provided with slideways at the connection positions corresponding to the translation frame 4 and the ash receiving trough 8, and the translation frame and the ash receiving trough 8 are provided with slide rails respectively to cooperate with the slideways for sliding connection.

[0032] Furthermore, the translation frame and the ash receiving trough 8 are provided with handles on the outer surface of the removal side; and high-temperature resistant sealing strips 7 are provided between the other three side surfaces and the sealing box body 1.

[0033] Furthermore, the air inlet is connected to the flue gas outlet of the soft felt continuous carbonization furnace through the air inlet pipe 2, and the air outlet is connected to the external clean flue gas pipeline through the air outlet pipe 3; the air inlet pipe 2 and the air outlet pipe 3 are both high-temperature resistant flexible pipes.

[0034] Furthermore, the filter screen 5 is composed of several layers of stainless steel metal mesh; and the mesh diameter of the stainless steel metal mesh gradually decreases from bottom to top.

[0035] Furthermore, the blocking baffle 6 is a stainless steel plate.

[0036] Furthermore, the ash receiving trough 8 is a drawer-type structure and is made of stainless steel plate.

[0037] Furthermore, the scraping plates 9 are provided in 2 to 3 rows along the moving direction of the translation frame. The width of the scraping plates 9 is the same as the width of the filter screen 5 , and the scraping plates 9 are made of stainless steel plates.

[0038] Furthermore, the dust cleaning component also includes a compressed air blowing pipe, which is arranged in the sealed box 1 above the translation frame.

[0039] The utility model discloses a flue gas filtering and cleaning device for a soft felt continuous carbonization furnace. In order to solve the problem of smoke exhaust pipeline blockage caused by dust and tar generated during the carbonization process of the soft felt, the following technical measures are adopted:

[0040] 1) Install a flue gas filtration and dust cleaning device at the flue gas outlet. This device consists of a sealed housing 1, a filter assembly, and a dust cleaning assembly. The sealed housing 1 can be cylindrical or rectangular to accommodate different installation space requirements. Installed at the flue gas outlet of the soft felt continuous carbonization furnace, it can directly receive dust particles from the flue gas. The filter assembly is used to filter dust from the flue gas, while the dust cleaning assembly removes and collects dust accumulated on the filter screen 5.

[0041] 2) The filter screen 5 adopts a multi-layer filtering structure, which can effectively capture and absorb dust particles in the flue gas and prevent them from entering the exhaust pipe.

[0042] 3) The dust cleaning component adopts an online dust cleaning method, and can clean the filter 5 regularly or according to actual needs to remove dust on the filter 5 and ensure its filtering effect.

[0043] 4) The dust cleaning component can use compressed air blowing, scraping with a scraper 9 or other cleaning methods to remove dust from the filter 5 by blowing or scraping, and discharge the dust from the system through the dust receiving trough 8.

[0044] 5) In order to ensure the effective cleaning effect of the cleaning component, the cleaning cycle and cleaning intensity can be set and adjusted according to actual conditions. For example, the cleaning intensity can be adjusted according to the dust adhesion and the tolerance of the equipment.

[0045] Through the above technical means, the emission of dust and tar can be reduced during the carbonization process of soft felt, the problem of blockage of smoke exhaust pipelines can be avoided, and online cleaning can be achieved, solving the cleaning problem in the continuous production process.

[0046] The utility model discloses a flue gas filtration and ash cleaning device for a soft felt continuous carbonization furnace. The internal space of a sealed box 1 is divided into three chambers: upper, middle, and lower chambers by a filter assembly and an ash receiving trough 8. The upper chamber is a clean gas chamber, the middle chamber is an exhaust gas chamber, and the lower chamber is a dust chamber. Flue gas enters the exhaust gas chamber from the air inlet 2. As the flue gas flows upward, it passes through the filter 5 to intercept and filter the dust and tar it carries. The flue gas then enters the clean gas chamber and is discharged through the exhaust pipe 3. The dust chamber is provided with an ash receiving trough 8. Dust and other impurities filtered by the filter 5 fall downward into the ash receiving trough 8. When cleaning is required, the translation frame is repeatedly pulled and the dust and other impurities adhering to the filter 5 are scraped off by the scraper 9. The scraped dust and impurities also fall into the ash receiving trough 8. The ash receiving trough 8 only needs to be pulled out for cleaning regularly or irregularly.

[0047] Filter 5 is composed of multiple layers of stainless steel mesh, typically two to three layers. When using three layers, the mesh diameter of the lower filter is 3 to 5 mm, the mesh diameter of the middle filter is 1 to 3 mm, and the mesh diameter of the upper filter is 0.5 to 1 mm. When using two layers, the mesh diameter of the lower filter is 1 to 5 mm, and the mesh diameter of the upper filter is 0.5 to 1 mm. Three to five sets of filters 5 can be installed, with one set installed and the remaining sets kept as spares for easy cleaning and replacement.

[0048] Except for the moving side, the other three sides of the translation frame are sealed to the sealing box 1 through high-temperature resistant sealing strips to prevent gas leakage from causing the external environment to deteriorate.

[0049] When sealed housing 1 is equipped with multiple filter and cleaning units, except for one filter and cleaning unit that utilizes a filter screen 5 for filtration, the remaining filter units are separated by barrier plates 6 to prevent exhaust gas from entering the clean air chamber above from the corresponding location. For example, with three filter and cleaning units, three to five barrier plates can be configured, two of which are installed in the sealed housing, with the remaining one to three serving as spares. Barrier plates 6 are made of stainless steel.

[0050] The ash receiving trough 8 is a drawer-like structure constructed of stainless steel. Except for the removal side, the remaining three sides are sealed to the sealed box 1 with high-temperature resistant sealing strips to prevent gas leakage and environmental degradation. For example, with three filter and cleaning units, 4 to 6 ash receiving troughs 8 can be configured, with three installed in the sealed box and the remaining 1 to 3 as spares.

[0051] The scraper plates 9 are made of stainless steel and have the same width as the filter screen 5. Two to three scraper plates 9 can be installed inside the sealed box 1 near the side where the filter screen 5 is removed. When cleaning dust, the translation frame with the filter screen 5 installed can be repeatedly pulled and pulled to ensure that the bottom of the filter screen 5 is in full contact with the scraper plates 9. The dust scraped off the filter screen 5 by the scraper plates 9 falls into the dust collecting trough 8 below. The dust collected in the dust collecting trough 8 is then collected and cleaned.

[0052] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flue gas filtering and cleaning device for a soft felt continuous carbonization furnace, which is arranged at the flue gas outlet of the soft felt continuous carbonization furnace; characterized in that: It includes a sealed box, a filter assembly and a dust cleaning assembly; the filter assembly includes a translation frame and a filter screen, and the filter screen is detachably arranged in the translation frame; the dust cleaning assembly includes a scraper plate and an dust collecting trough; the translation frame and the dust collecting trough are both pull-out structures, which can be pushed in or moved out from one side of the sealed box; the scraper plate is arranged in the sealed box below the moving side of the translation frame, and the scraper plate contacts the bottom of the filter screen; the internal space of the sealed box above the filter screen is the clean air chamber; the internal space of the sealed box below the filter screen and above the dust collecting trough is the exhaust gas chamber, and the remaining space in the lower part of the sealed box is the dust chamber; an air inlet is provided on one side of the sealed box corresponding to the exhaust gas chamber, and an air outlet is provided on the top of the sealed box.

2. The flue gas filtering and cleaning device for a soft felt continuous carbonization furnace according to claim 1, characterized in that: The sealed box body is provided with multiple filtering and cleaning units, and the multiple filtering and cleaning units are arranged side by side along the direction of smoke entry; each filtering and cleaning unit is provided with a filtering component and a cleaning component; a filter net is installed in the translation frame of one of the filtering and cleaning units, and blocking baffles are installed in the translation frames of the remaining filtering and cleaning units.

3. The flue gas filtering and cleaning device for a soft felt continuous carbonization furnace according to claim 1, characterized in that: The sealing box body is provided with slideways at the connection positions of the corresponding translation frame and the ash receiving trough, and the translation frame and the ash receiving trough are provided with slide rails respectively, which are slidably connected with the slideways.

4. The flue gas filtering and cleaning device for a soft felt continuous carbonization furnace according to claim 1, characterized in that: The translation frame and the ash receiving trough are respectively provided with handles on the outer surfaces of the moving-out sides; and high-temperature resistant sealing strips are respectively provided between the other three side surfaces and the sealing box body.

5. The flue gas filtering and cleaning device for a soft felt continuous carbonization furnace according to claim 1, characterized in that: The air inlet is connected to the flue gas outlet of the soft felt continuous carbonization furnace through an air inlet pipe, and the air outlet is connected to the external clean flue gas pipeline through an air outlet pipe; the air inlet pipe and the air outlet pipe are both high-temperature resistant flexible pipes.

6. The flue gas filtering and cleaning device for a soft felt continuous carbonization furnace according to claim 1, characterized in that: The filter screen is composed of several layers of stainless steel metal mesh; and the mesh diameter of the stainless steel metal mesh gradually decreases from bottom to top.

7. The flue gas filtering and cleaning device for a soft felt continuous carbonization furnace according to claim 2, characterized in that: The blocking baffle is a stainless steel plate.

8. The flue gas filtering and cleaning device for a soft felt continuous carbonization furnace according to claim 1, characterized in that: The ash receiving trough is a drawer-type structure and is made of stainless steel plate.

9. The flue gas filtering and cleaning device for a soft felt continuous carbonization furnace according to claim 1, characterized in that: The scraping plates are arranged in 2 to 3 rows along the moving direction of the translation frame. The width of the scraping plates is the same as the width of the filter screen. The scraping plates are made of stainless steel plates.

10. The flue gas filtering and cleaning device for a soft felt continuous carbonization furnace according to claim 1, characterized in that: The dust cleaning component also includes a compressed air blowing pipe, which is arranged in a sealed box above the translation frame.

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