Ventilation and dust prevention system for basement of coke oven

Abstract

The utility model discloses a coke oven basement ventilation dustproof system which comprises an air inlet, a ventilation pipe and an air outlet, an air filtering section and an induced draft fan are arranged in the ventilation pipe, the induced draft fan is arranged behind the air filtering section, and a dust hopper is arranged below the air filtering section. And the air filtering section is sequentially provided with a large-aperture dustproof net, a filtering net and dust removal cloth in the air flowing direction. According to the ventilation and dust prevention system for the coke oven basement, air outside the coke oven basement can be led into the coke oven basement after dust is filtered out, it is guaranteed that fresh air entering the coke oven basement does not contain dust, and the large-aperture dust screen, the filter screen and the dust removal cloth are all provided with corresponding dust cleaning parts; and dust on the dust removal component only needs to be cleaned regularly, so that the cost of replacing the dust removal component is reduced, the air flow entering the coke oven basement is ensured, and the ventilation effect is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of coke oven equipment, and in particular relates to a ventilation and dust prevention system for a coke oven basement. Background Art

[0002] The coke oven basement is an important part of the coke oven workshop of the coking plant. The coke oven basement is equipped with gas pipelines, steam pipelines, water supply pipelines, etc. for supplying the coke oven. The main function of the ventilation system is to discharge the waste heat generated by the process and the possible leakage of gas from the gas pipeline system. The dust density in the air near the coke oven basement is relatively high. The current ventilation system has the following problems when in use: ① The dust prevention effect is poor. Most of the dust in the coke oven basement enters the coke oven basement from the air intake section of the ventilation system. Most of the existing ventilation systems do not perform dust removal on the inhaled air in the air intake section. The dust near the coke oven enters the coke oven basement directly with the ventilation system. There will be a thick layer of dust on the outer wall of the pipeline and the pipeline valve. If it adheres for a long time, it will corrode the pipeline and valve, causing gas or liquid leakage in the pipeline; ② The air flow rate in the air intake section is small. Some existing ventilation systems are equipped with activated carbon adsorption devices in the air intake section to adsorb dust in the inhaled air. After long-term use, the adsorption effect of the adsorption device deteriorates. A large amount of dust still enters the coke oven basement with the air. In addition, the air flow rate decreases, the ventilation effect deteriorates, and the activated carbon needs to be replaced frequently, which increases the production cost. Therefore, it is an objective need to develop a coke oven basement ventilation and dust prevention system with good dust prevention effect and large air flow in the air inlet section. Utility Model Content

[0003] 1. Technical problems to be solved

[0004] In order to solve the problems in the prior art of poor dust prevention effect of the ventilation system, small air flow in the air intake section and poor ventilation effect, the utility model provides a ventilation and dust prevention system for a coke oven basement, wherein the air intake section of the ventilation and dust prevention system is provided with an air filtering section, which can filter the dust from the air outside the coke oven basement and introduce it into the coke oven basement, and the large-aperture dust-proof net, filter net and dust-removing cloth in the air filtering section are all provided with corresponding dust cleaning components, and there is no need to replace the dust removal components, and only the dust on the large-aperture dust-proof net, filter net and dust-removing cloth needs to be cleaned regularly.

[0005] 2. Technical solution

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A coke oven basement ventilation and dust prevention system comprises an air inlet, a ventilation duct and an air outlet, wherein an air filter section and an induced draft fan are arranged in the ventilation duct, the induced draft fan is arranged behind the air filter section, a dust hopper is arranged below the air filter section, a large-aperture dust-proof net, a filter net and a dust-removing cloth are arranged in sequence along the air flow direction of the air filter section, a first support rod is arranged in front of the large-aperture dust-proof net, a scraper is installed on the first support rod, a second support rod is arranged in front of the filter net, a soft brush is installed on the second support rod, a spring is arranged behind the dust-removing cloth, movable plates are arranged at the connection between the large-aperture dust-proof net, the filter net and the dust-removing cloth and the dust hopper, and a driving motor is arranged on the inner wall of the ventilation duct.

[0008] Furthermore, the longitudinal section of the ventilation duct where the air filter section is arranged is rectangular or square.

[0009] Furthermore, there are at least four filter screens, the width of each filter screen is smaller than the width of the ventilation pipe, there is a gap between each filter screen and the inner wall of the ventilation pipe, and two adjacent gaps are not in the same position.

[0010] Furthermore, the ventilation duct is in an inverted "L" shape, the air inlet is arranged horizontally, the air outlet is arranged vertically, and the air outlet is downward.

[0011] 3. Beneficial effects

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] The ventilation and dust prevention system of the coke oven basement of the present technical solution can filter the dust from the air outside the coke oven basement and then introduce it into the coke oven basement. The large-aperture dust-proof net, filter net and dust-removing cloth are arranged in the air filtration section. The large-aperture dust-proof net can filter out the dust with larger particles in the air, the filter net can filter out more than 95% of the dust in the air, and the dust-removing cloth can filter out the missed dust with smaller particles, so as to ensure that the fresh air entering the coke oven basement does not contain dust, so that dust will not accumulate on the outer walls of the gas pipelines, steam pipelines, water supply pipelines and other pipelines and pipeline valves in the coke oven basement, which not only prolongs the service life of the pipelines and valves, but also prevents the occurrence of dust-related accidents. Safety accidents caused by corrosion of pipes; the large-aperture dust-proof nets, filters and dust-removing cloths installed in the air filtration section are all equipped with corresponding dust cleaning components. The scraper arranged in front of the large-aperture dust-proof net is used to scrape off the large-particle dust on the large-aperture dust-proof net, and the soft-bristle brush in front of the filter is used to brush off the dust on the filter. The spring arranged behind the dust-removing cloth is used to shake off the dust on the dust-removing cloth. There is no need to replace the large-aperture dust-proof nets, filters, dust-removing cloths and other dust-removing components. It is only necessary to clean the dust on the dust-removing components regularly, which not only reduces the cost of replacing the dust-removing components, but also ensures the air flow entering the coke oven basement and ensures the ventilation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the filter screen 4 in Embodiment 1 of the present utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the filter screen 4 in Example 2 of the utility model.

[0017] In the figure: 1-air inlet, 2-large-aperture dust-proof net, 3-scraper, 31-first support rod, 4-filter net, 5-second support rod, 6-soft brush, 7-dust cloth, 8-spring, 9-movable plate, 10-dust hopper, 11-driving motor, 12-induced draft fan, 13-induced draft fan air inlet, 14-induced draft fan air outlet, 15-ventilation duct, 16-air outlet. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.

[0019] like Figure 1As shown, the utility model includes an air inlet 1, a ventilation pipe 15, and an air outlet 16. An air filter section and an induced draft fan 12 are arranged in the ventilation pipe 15. The induced draft fan 12 is arranged behind the air filter section. The induced draft fan 12 is used to introduce air outside the coke oven basement into the coke oven basement. A dust hopper 10 is arranged below the air filter section. The dust hopper 10 is used to collect dust filtered by the air filter section. The air filter section is sequentially provided with a large-aperture dustproof net 2, a filter net 4, and a dust-removing cloth 7 along the air flow direction. The large-aperture dustproof net 2 is used to filter large particles of dust in the air, the filter net 4 is used to filter most of the dust, and the dust-removing cloth 7 is used to filter small particles of dust missed by the filter net 4. A first support rod 31 is arranged in front of the large-aperture dustproof net 2. The first support rod 31 is equipped with a scraper 3. The scraper 3 is used to scrape off large particles on the large-aperture dustproof net 2 Dust, a second support rod 5 is arranged in front of the filter screen 4, and a soft brush 6 is installed on the second support rod 5. The soft brush 6 is used to brush off the dust on the filter screen 4. A spring 8 is arranged behind the dust removal cloth 7. The spring 8 is used to shake off the dust on the dust removal cloth 7. A movable plate 9 is arranged at the connection between the large-aperture dust-proof net 2, the filter screen 4, the dust removal cloth 7 and the dust hopper 10. When the scraper 3, the soft brush 6 and the spring 8 are working, the movable plate 9 is opened to make the dust on the large-aperture dust-proof net 2, the filter screen 4 and the dust removal cloth 7 fall into the dust hopper 10. When the scraper 3, the soft brush 6 and the spring 8 stop working, the movable plate 9 is closed to prevent the dust in the dust hopper 10 from being blown up by the air entering the coke oven basement. A driving motor 11 is arranged on the inner wall of the ventilation pipe 15. The driving motor 11 is used to drive the scraper 3, the soft brush 6, the spring 8 and the movable plate 9.

[0020] The longitudinal section of the ventilation duct 15 where the air filter section is arranged is rectangular or square, which is convenient for installing the large-aperture dust-proof net 2, the filter net 4, and the dust-removing cloth 7. When the scraper 3, the soft brush 6, and the spring 8 clean the dust on the large-aperture dust-proof net 2, the filter net 4, and the dust-removing cloth 7, there is no cleaning dead angle, thereby ensuring the dust cleaning effect; the ventilation duct 15 is an inverted "L" shape, and the air inlet 1 is arranged horizontally to prevent outdoor foreign objects from falling into the air inlet 1 to damage the large-aperture dust-proof net 2, and will not inhale dust on the ground outside the coke oven basement. The air outlet 16 is arranged vertically, and the air outlet 16 is downward. Since the outdoor air temperature is lower than the indoor air temperature, the low-temperature air is blown downward from the top of the coke oven basement, and the indoor hot air is discharged from the bottom to the top, and the indoor air flows quickly, thereby ensuring the ventilation effect.

[0021] Example 1

[0022] like Figure 2As shown, the utility model has at least four filter screens 4. In order to remove dust in the air as much as possible, reduce the dust content in the air reaching the dust-removing cloth 7, and reduce the working intensity of the dust-removing cloth 7, the width of each filter screen 4 is smaller than the width of the ventilation pipe 15, and there is a gap between each filter screen 4 and the inner wall of the ventilation pipe 15, and the two adjacent gaps are not in the same position, so as to ensure the ventilation effect while ensuring the dust removal effect.

[0023] Example 2

[0024] like Figure 3 As shown, the utility model has at least four filter screens 4. In order to remove dust in the air as much as possible, reduce the dust content in the air reaching the dust-removing cloth 7, and reduce the working intensity of the dust-removing cloth 7, the width of each filter screen 4 is smaller than the width of the ventilation pipe 15. There is a gap in the middle of the first filter screen 4, and there are two gaps between the second filter screen 4 and the inner wall of the ventilation pipe 15. The filter screens 4 are arranged backwards in this way to ensure the ventilation effect while ensuring the dust removal effect.

[0025] When in use, start the induced draft fan 12, so that the dust-containing air outside the coke oven basement enters the ventilation and dust prevention system of the coke oven basement from the air inlet 1, and the dust-containing air passes through the large-aperture dust-proof net 2, the filter net 4, and the dust-removing cloth 7 of the air filter section in sequence. After the dust-containing air is filtered by the air filter section, it is sucked in from the induced draft fan air inlet 13, and then blown out from the induced draft fan air outlet 14, and enters the coke oven basement from the air outlet 16. The dust-containing air is filtered through the air filter section, and the filtered air enters the coke oven basement, while the dust remains on the large-aperture dust-proof net 2, the filter net 4, and the dust-removing cloth 7. At this time, the induced draft fan 12 is turned off and the drive motor 11 is started. The drive motor 11 drives the scraper 3, the soft brush 6, and the spring 8 to work. The scraper 3 and the soft brush 6 move up and down to clean the dust on the large-aperture dust-proof net 2 and the filter net 4. The spring 8 moves left and right to shake off the dust on the dust-removing cloth 7. The drive motor 11 simultaneously drives the movable plate 9 to open, so that the dust on the large-aperture dust-proof net 2, the filter net 4, and the dust-removing cloth 7 falls into the dust hopper 10. When the dust on the large-aperture dust-proof net 2, the filter net 4, and the dust-removing cloth 7 falls into the dust hopper 10, the scraper 3, the soft brush 6, and the spring 8 stop working, the movable plate 9 is closed, and the induced draft fan 12 is started to continue to introduce clean air into the coke oven basement.

Claims

1. A coke oven basement ventilation and dust prevention system, comprising an air inlet (1), a ventilation pipe (15), and an air outlet (16), characterized in that: An air filter section and an induced draft fan (12) are arranged in the ventilation pipe (15). The induced draft fan (12) is arranged behind the air filter section. A dust hopper (10) is arranged below the air filter section. A large-aperture dustproof net (2), a filter net (4), and a dust removal cloth (7) are arranged in sequence along the air flow direction of the air filter section. A first support rod (31) is arranged in front of the large-aperture dustproof net (2). A scraper (3) is installed on the first support rod (31). A second support rod (5) is arranged in front of the filter net (4). A soft brush (6) is installed on the second support rod (5). A spring (8) is arranged behind the dust removal cloth (7). A movable plate (9) is arranged at the connection between the large-aperture dustproof net (2), the filter net (4), and the dust removal cloth (7) and the dust hopper (10). A driving motor (11) is arranged on the inner wall of the ventilation pipe (15).

2. A coke oven basement ventilation and dust prevention system according to claim 1, characterized in that: The longitudinal section of the ventilation pipe (15) where the air filter section is provided is rectangular or square.

3. A coke oven basement ventilation and dust prevention system according to claim 1, characterized in that: There are at least four filter screens (4), the width of each filter screen (4) is smaller than the width of the ventilation pipe (15), there is a gap between each filter screen (4) and the inner wall of the ventilation pipe (15), and two adjacent gaps are not in the same position.

4. A coke oven basement ventilation and dust prevention system according to claim 1, characterized in that: The ventilation pipe (15) is in an inverted "L" shape, the air inlet (1) is arranged horizontally, and the air outlet (16) is arranged vertically, with the air outlet (16) facing downward.

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