Suction type multi-stage dust removal device

Abstract

The utility model relates to a suction type multistage dust removal device, which relates to the technical field of coke oven gas dust removal equipment and comprises a rack, a primary dust removal bin, a secondary dust removal bin and a centrifugal fan for sucking coke oven gas are arranged in the rack, the centrifugal fan is connected with a water mist sprayer through a ventilation pipeline, the water mist sprayer is communicated with the primary dust removal bin, and the primary dust removal bin is communicated with the secondary dust removal bin. The primary dust removal bin is connected with a fine filter through a ventilation pipeline, the fine filter is communicated with the secondary dust removal bin, and the secondary dust removal bin is communicated with an air storage tank through a ventilation pipeline. According to the coke oven gas dust removal device, the coke oven gas can be subjected to multi-stage dust removal, so that fine and tiny dust particles in the coke oven gas can be separated and removed, the coke oven gas subjected to dust removal treatment can be directly introduced into subsequent use equipment and chemical byproduct extraction equipment, and equipment damage caused by dust is avoided; meanwhile, the extraction efficiency of chemical byproducts can be improved, environmental pollution is avoided, and the production cost is reasonably controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of coke oven gas dust removal equipment, and specifically discloses a suction-type multi-stage dust removal device. Background Art

[0002] Coke oven gas is a byproduct of the coking industry, also known as coke oven gas. Due to its high calorific value, it is a high-calorific value gas. After the coking coal is subjected to high-temperature dry distillation in the coking oven, a combustible gas is produced while producing coke and tar products. When the coal is in the coking process, about 75% of it produces coke, and the other 25% produces coke oven gas mixed with various chemical products. Since the coke oven gas is a crude product, it contains a variety of impurities, mainly tar, benzene, naphthalene, ammonia, sulfide, hydrogen cyanide, benzene, naphthalene, tar and dust. In order to obtain pure coke oven gas, it is necessary to first remove dust, and then extract chemical byproducts such as coal tar, ammonia, tea, hydrogen sulfide, hydrogen cyanide and crude benzene.

[0003] The utility model patent with authorization announcement number: CN216755734U discloses a coke oven gas dust removal device, including a processing box, a box cover and a dust filter, the box cover is fixed at the top of the processing box, the dust filter is vertically fixed in the middle of the bottom side of the processing box, a dust scraping mechanism is arranged in the middle of the bottom end of the box cover, and an odor adsorption mechanism is arranged on one side of the dust filter; the dust scraping mechanism includes a limit rod, a movable block, a connecting rod and a first spring, the limit rod is fixed in the middle of the bottom end of the box cover, the movable block is movably mounted on the limit rod, the top end of the connecting rod is fixedly connected to one end of the bottom of the movable block, and the bottom end of the connecting rod movably passes through the box cover.

[0004] In the disclosed patent technology, the movable block is pressed to drive the connecting rod to move downward. In the process of moving downward, the connecting rod drives the fixed block to move downward, so that the scraper moves downward. In the process of moving downward, the scraper can scrape off the large dust particles attached to one side of the dust filter and collect them in the collection tube. Since there are different levels of dust in the crude coke oven gas that has not been dedusted, the dust removal device provided in the above disclosed patent can only remove large dust particles, but cannot effectively separate fine and tiny dust particles. If it is directly passed into the subsequent use equipment and chemical by-product extraction equipment, due to the excessive dust content in the coke oven gas, it is very easy to cause equipment damage and low chemical by-product extraction efficiency, and cause environmental pollution, and it is impossible to reasonably control production costs. Utility Model Content

[0005] In view of the problem that the current dust removal equipment for crude coke oven gas can only clean and remove large particles of dust but cannot effectively separate fine and tiny particles of dust, resulting in damage to coke oven gas use equipment and low efficiency in extracting chemical by-products, the utility model provides a suction-type multi-stage dust removal device.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A suction-type multi-stage dust removal device comprises a stand, wherein a primary dust removal bin and a secondary dust removal bin are arranged inside the stand, a centrifugal fan for inhaling coke oven gas is installed at the head of the stand, the centrifugal fan is connected to a water mist sprayer for absorbing fine dust particles through a ventilation duct, the water mist sprayer is connected to the primary dust removal bin, the primary dust removal bin is connected to a fine filter for absorbing tiny dust particles through the ventilation duct, the fine filter is connected to the secondary dust removal bin, and the secondary dust removal bin is connected to a gas storage tank for storing coke oven gas through the ventilation duct.

[0008] Preferably, the air inlet of the centrifugal fan is connected to a coarse filter for absorbing large particles of dust, and the coarse filter is connected to a carbonization chamber for producing coke oven gas.

[0009] Preferably, the water mist sprayer is installed on the top of the first-level dust removal bin, a through groove connected to the ventilation duct is opened at the axis of the water mist sprayer, a plurality of mist water outlets are arranged on the bottom surface of the water mist sprayer, and the mist water outlets are arranged inside the first-level dust removal bin, and the water mist sprayer is provided with a water inlet pipe connected to an external water supply device.

[0010] Preferably, the bottom of the primary dust removal bin is connected to a water tank, and a water outlet pipe is provided on the side wall of the water tank.

[0011] Preferably, a first air outlet pipe is installed on the outer wall of the first-level dust removal bin, the first air outlet pipe is connected to the fine filter through the ventilation pipe, the fine filter is installed on the top of the second-level dust removal bin, and a second air outlet pipe is installed on the outer wall of the fine filter, the second air outlet pipe is connected to the air storage tank through the ventilation pipe.

[0012] Preferably, a drain valve pipe is provided at the bottom of the secondary dust removal bin, and a water storage bucket is placed at the bottom of the drain valve pipe.

[0013] Preferably, an air inlet connected to a ventilation pipe is provided at the bottom of the air storage tank, and a plurality of air outlets are provided on the outer wall of the air storage tank.

[0014] Preferably, there are at least two air outlets and they are evenly distributed up and down.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The centrifugal fan in the utility model can suck the coke oven gas into the device, and the water mist generated by the water mist sprayer can adsorb the fine dust particles in the coke oven gas. The fine filter can adsorb the tiny dust particles in the coke oven gas. After the coke oven gas passes through multi-stage dust removal, the fine and tiny dust particles therein can be separated and removed, so that the coke oven gas can be directly passed into the subsequent use equipment and chemical by-product extraction equipment to avoid equipment damage caused by dust. At the same time, it can also improve the extraction efficiency of chemical by-products, avoid environmental pollution, and reasonably control production costs;

[0017] 2. The utility model can pre-filter and remove large dust particles by arranging a coarse filter at one end of the air inlet of the centrifugal fan, thereby ensuring that the coke oven gas entering the centrifugal fan is non-coarse products. On the one hand, it can prevent large dust particles from causing damage to the centrifugal fan, the water mist sprayer and the fine filter, thereby prolonging the service life of the entire device. On the other hand, it can improve the dust removal effect of the entire device, save materials, and reduce production costs.

[0018] 3. The utility model can filter out the moisture accompanying the coke oven gas by connecting the water storage tank at the bottom of the secondary dust removal bin, which can not only ensure the dryness of the coke oven gas, but also effectively utilize the screened moisture. Since the moisture is a relatively pure water body, it can be reused, thereby reducing resource waste, and therefore has a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the utility model, the following will briefly introduce the drawings required for the description. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the front structure of the overall device of the utility model;

[0021] Figure 2 It is a schematic diagram of the back structure of the overall device of the utility model;

[0022] Figure 3 This is a schematic diagram of the installation structure of the primary dust removal bin of the utility model;

[0023] Figure 4 This is a schematic diagram of the through slot structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the mist water outlet structure of the utility model;

[0025] Figure 6 This is a schematic diagram of the installation structure of the secondary dust removal bin of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the gas storage tank of the utility model;

[0027] In the figure: 1. rack, 2. primary dust removal bin, 3. secondary dust removal bin, 4. centrifugal fan, 5. water mist sprayer, 6. fine filter, 7. air storage tank, 8. coarse filter, 9. through slot, 10. mist water outlet, 11. water inlet pipe, 12. water storage tank, 13. water outlet pipe, 14. first air outlet pipe, 15. second air outlet pipe, 16. steam trap pipe, 17. water storage barrel, 18. air inlet, 19. air outlet pipe, DETAILED DESCRIPTION

[0028] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0029] This specific embodiment provides a suction-type multi-stage dust removal device, such as Figure 1-Figure 7 As shown, it includes a stand 1, and the stand 1 consists of a three-layer structure, namely a bottom stand, a middle stand and a high stand; a centrifugal fan 4 for inhaling coke oven gas is installed on the bottom structure of the stand, and the centrifugal fan 4 is located at the head of the stand 1, a first-level dust removal bin 2 is arranged in the middle structure of the stand, and a second-level dust removal bin 3 is arranged in the high structure of the stand, and a gas storage tank 7 is placed on one side of the tail of the stand 1, and the gas storage tank 7 can store the coke oven gas after dust removal.

[0030] like Figure 1-Figure 2 As shown, the air inlet of the centrifugal fan 4 is connected to a coarse filter 8 for absorbing large particles of dust. The coarse filter 8 is connected to a carbonization chamber for producing coke oven gas. The crude coke oven gas produced by the carbonization chamber first enters the coarse filter 8 under the suction action of the centrifugal fan 4. The filter element in the coarse filter 8 can intercept large particles of dust. After the crude coke oven gas enters the coarse filter 8, the large particles of dust generate centrifugal force. Under the action of the centrifugal force, the impurity particles move to the inner wall of the outer circle of the coarse filter 8 and are adsorbed by the filter element in the coarse filter 8. After passing through the coarse filter 8, the crude coke oven gas enters the centrifugal fan 4 from the air inlet of the centrifugal fan 4 after the large particles of dust are removed.

[0031] like Figure 1-Figure 4As shown, the air outlet of the centrifugal fan 4 is connected to a water mist sprayer 5 for absorbing fine dust particles through a ventilation duct. The water mist sprayer 5 is installed on the top of the primary dust removal bin 2. The water mist sprayer 5 is connected to the primary dust removal bin 2. A through groove 9 connected to the ventilation duct is opened at the axis of the water mist sprayer 5. The coke oven gas can enter the inner cavity of the water mist sprayer 5 through the through groove 9. The outer wall of the water mist sprayer 5 is provided with a water inlet pipe 11 connected to an external water supply device. The external water supply device can transport purified water to the water mist sprayer through the water inlet pipe 11. In the inner cavity of the shower 5, the inner cavity of the water mist sprayer 5 is a rotating cavity. When the inner cavity rotates at high speed, water droplets can be converted into water mist. The bottom surface of the water mist sprayer 5 is provided with multiple mist water outlets 10, and the mist water outlets 10 can continuously output water mist into the primary dust removal bin 2. The mist water outlets 10 are arranged inside the primary dust removal bin 2; the coke oven gas enters the primary dust removal bin 2 from the water mist sprayer 5, and the water mist generated by the water mist sprayer 5 can absorb the fine particles of dust in the coke oven gas and separate them. Since the coke oven gas and water are not miscible, the output of the coke oven gas can be guaranteed.

[0032] Among them, Figure 3 As shown, an opening is provided at the bottom of the primary dust removal bin 2, and the opening is connected to a water tank 12. The water mist after adsorbing small particles of dust forms a mixed liquid, and the mixed liquid can flow from the primary dust removal bin 2 to the water tank 12, thereby avoiding moisture retention in the primary dust removal bin 2. A water outlet pipe 13 is provided on the side wall of the water tank 12, and the mixed liquid in the water tank 12 can flow out through the water outlet pipe 13, thereby ensuring that there is always water storage space in the water tank 12.

[0033] A first air outlet pipe 14 is installed on the outer wall of the first-level dust removal bin 2, and the coke oven gas can flow out of the first-level dust removal bin 2 through the first air outlet pipe 14. The first air outlet pipe 14 is connected to the fine filter 6 through the ventilation pipe. The fine filter 6 can absorb tiny particle dust in the coke oven gas. The structure and function of the fine filter 6 are basically similar to those of the coarse filter 8, but the filter element in the fine filter 6 has higher filtering accuracy than the filter element in the coarse filter 8, and can effectively absorb tiny particle dust. The tiny particle dust generates centrifugal force. Under the action of centrifugal force, the impurity particles move to the inner wall of the outer circle of the fine filter 6 and are absorbed by the filter element in the fine filter 6. The fine filter 6 is installed on the top of the secondary dust removal bin 3, and a second air outlet pipe 15 is installed on the outer wall of the fine filter 6. The second air outlet pipe 15 is connected to the gas storage tank 7 through the ventilation pipe.

[0034] Among them, Figure 6As shown, the fine filter 6 is communicated with the inner cavity of the secondary dust removal bin 3. The bottom of the secondary dust removal bin 3 is provided with an opening, on which a steam trap pipe 16 is installed. The steam trap pipe 16 can intercept the coke oven gas and allow the liquid to flow out. The fine filter 6 will further filter the coke oven gas and allow the moisture mixed in the coke oven gas to flow out from the steam trap pipe 16. A water storage barrel 17 is placed at the bottom of the steam trap pipe 16, and the water storage barrel 17 can store the liquid flowing out of the steam trap pipe 16.

[0035] like Figure 7 As shown, an air inlet 18 connected to the ventilation pipe is provided at the bottom of the gas storage tank 7, and the air inlet 18 connects the secondary dust removal bin 3 and the gas storage tank 7. Since the density of coke oven gas is less than the density of air, arranging the air inlet 18 at the bottom of the gas storage tank 7 is beneficial to the circulation of coke oven gas and ensures the normal operation of the overall device; a plurality of air outlet pipe openings 19 are provided on the outer wall of the gas storage tank 7, and the operating personnel can connect the air outlet pipe openings 19 by using external pipes, and output the coke oven gas to the gas storage tank 7 through the external pipes.

[0036] In addition, there are at least two gas outlet pipes 19 evenly distributed up and down; through the installation structure evenly distributed vertically up and down, the gas outlet pipe 19 can be easily connected to the external pipeline, so that the coke oven gas can flow out from the gas outlet pipe 19 continuously after entering from the air inlet 18, further enhancing the operation smoothness of the overall device.

[0037] The working principle of the utility model is:

[0038] The centrifugal fan 4 can suck the crude coke oven gas from the carbonization chamber into this device; first, the crude coke oven gas is sucked in from the air inlet at one end of the coarse filter 8. After the crude coke oven gas enters the coarse filter 8, large particles of dust will generate centrifugal force. Under the action of centrifugal force, the impurity particles move to the inner wall of the outer circle of the coarse filter 8 and are adsorbed by the filter element in the coarse filter 8. Therefore, the coke oven gas flowing out of the air outlet at the other end of the coarse filter 8 is the coke oven gas after the large particles of dust are removed; secondly, the coke oven gas enters the inner cavity of the water mist sprayer 5, is mixed with pure water in the inner cavity of the water mist sprayer 5, and flows into the primary dust removal bin 2 in the form of mist water through the mist water outlet 10. In this process, the coke oven gas The fine dust particles in the coal gas are absorbed by the pure water and flow into the water storage tank 12, while the coke oven gas flows into the fine filter 6 through the first outlet pipe 14; then, the tiny dust particles will generate centrifugal force in the fine filter 6. Under the action of centrifugal force, the tiny dust particles move to the inner wall of the outer circle of the fine filter 6 and are absorbed by the filter element in the fine filter 6. In this process, the filter element of the fine filter 6 can further absorb the moisture accompanying the coke oven gas, and screen the coke oven gas and moisture through the steam trap pipe 16, so that the moisture enters the water storage barrel 17, and after the coke oven gas has been treated with three dust removals, it enters the gas storage tank 7 through the second outlet pipe 15 and the air inlet 18.

[0039] The operator can connect the external pipeline to the gas outlet 19 to provide the coke oven gas in the gas storage tank 7 after dust removal to subsequent use equipment or related equipment for chemical by-product extraction for processing and utilization.

[0040] Compared with the prior art, the utility model has the following advantages: the centrifugal fan 4 can suck the coke oven gas into the interior of the device, the water mist generated by the water mist sprayer 5 can adsorb the fine dust particles in the coke oven gas, the fine filter 6 can adsorb the tiny dust particles in the coke oven gas, and the coke oven gas can separate and remove the fine and tiny dust particles therein after multi-stage dust removal, so that it can be directly passed into subsequent use equipment and chemical by-product extraction equipment to avoid equipment damage caused by dust, and at the same time it can also improve the extraction efficiency of chemical by-products, avoid environmental pollution, and reasonably control production costs. Therefore, the utility model has a very broad application prospect.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A suction-type multi-stage dust removal device, comprising a stand (1), characterized in that: The rack (1) is provided with a primary dust removal bin (2) and a secondary dust removal bin (3). A centrifugal fan (4) for inhaling coke oven gas is installed at the head of the rack (1). The centrifugal fan (4) is connected to a water mist sprayer (5) for absorbing fine dust particles via a ventilation duct. The water mist sprayer (5) is connected to the primary dust removal bin (2). The primary dust removal bin (2) is connected to a fine filter (6) for absorbing fine dust particles via a ventilation duct. The fine filter (6) is connected to the secondary dust removal bin (3). The secondary dust removal bin (3) is connected to a gas storage tank (7) for storing coke oven gas via a ventilation duct.

2. A suction-type multi-stage dust removal device according to claim 1, characterized in that: The air inlet of the centrifugal fan (4) is connected to a coarse filter (8) for absorbing large dust particles, and the coarse filter (8) is connected to a carbonization chamber for producing coke oven gas.

3. The suction-type multi-stage dust removal device according to claim 1, characterized in that: The water mist sprayer (5) is installed on the top of the primary dust removal bin (2); a through groove (9) connected to a ventilation duct is provided at the axis of the water mist sprayer (5); a plurality of water mist outlets (10) are provided on the bottom surface of the water mist sprayer (5); the water mist outlets (10) are arranged inside the primary dust removal bin (2); and the water mist sprayer (5) is provided with a water inlet pipe (11) connected to an external water supply device.

4. The suction-type multi-stage dust removal device according to claim 3, characterized in that: The bottom of the primary dust removal bin (2) is connected to a water storage tank (12), and a water outlet pipe (13) is provided on the side wall of the water storage tank (12).

5. The suction-type multi-stage dust removal device according to claim 3, characterized in that: A first air outlet pipe (14) is installed on the outer wall of the primary dust removal bin (2), the first air outlet pipe (14) is connected to a fine filter (6) through a ventilation pipe, the fine filter (6) is installed on the top of the secondary dust removal bin (3), a second air outlet pipe (15) is installed on the outer wall of the fine filter (6), the second air outlet pipe (15) is connected to an air storage tank (7) through a ventilation pipe.

6. The suction-type multi-stage dust removal device according to claim 5, characterized in that: A drain valve pipe (16) is provided at the bottom of the secondary dust removal bin (3), and a water storage bucket (17) is placed at the bottom of the drain valve pipe (16).

7. The suction-type multi-stage dust removal device according to claim 1, characterized in that: The bottom of the gas storage tank (7) is provided with an air inlet (18) connected to a ventilation pipe, and the outer wall of the gas storage tank (7) is provided with a plurality of air outlets (19).

8. The suction-type multi-stage dust removal device according to claim 7, characterized in that: At least two air outlets (19) are provided and are evenly distributed up and down.

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