A smoke and dust removal device for blast furnace smelting coke

Abstract

The utility model belongs to the field of coke oven flue gas emission treatment technology, specifically discloses a kind of smoke and dust removal equipment for blast furnace smelting coke, for solving the technical problem that suspended smoke dust particle cannot be filtered comprehensively and cannot be removed in real time after filtering;Including dust-settling cylinder and filter dust cylinder that are connected, dust-settling cylinder and filter dust cylinder are commonly equipped with adapter box, the upper side one end of dust-settling cylinder is tangentially provided with inlet pipe, the upper end of dust-settling cylinder is installed with the communicating pipe being connected with adapter box, the upper end of adapter box is installed with the upper discharge pipe being connected with filter dust cylinder;The utility model one side is through gravity settling+fine filtration double filtration removal cleaning action to complete the effective dust removal of flue gas, can solve the problem that suspended particle cannot be removed comprehensively;On the other hand, it is also through the cleaning mode of active filtration+passive filtration to complete the blockage removal of smoke dust filtration stage jointly;The mutual use of two can effectively realize smoke dust elimination in smelting coke process, and smoke dust elimination efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of coke oven flue gas emission control technology, and in particular to a smoke and dust removal device for blast furnace coke smelting. Background Technology

[0002] The flue dust generated during blast furnace coke production is characterized by high temperature, high corrosiveness, and a wide particle size distribution. Traditional dust removal technologies face problems such as low efficiency, high energy consumption, and short equipment lifespan. Early technologies often employed single dust removal methods (such as gravity settling and wet scrubbing), which are insufficient to meet modern environmental standards.

[0003] Referring to the utility model patent with patent publication number CN204768042U, although a two-stage dust removal system is adopted, only a cyclone dust collector with the same structure is used to complete the dust removal, without considering the thorough removal of suspended particulate impurities, thus affecting the dust removal efficiency. At the same time, real-time removal cannot be completed after the dust filtration, thus affecting the continuous operation of the entire dust removal system.

[0004] To address the aforementioned technical shortcomings, a solution is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a smoke and dust removal device for blast furnace coke smelting, in order to solve the problems of the inability to fully filter suspended dust particles and the inability to remove them in real time after filtration.

[0006] The objective of this utility model can be achieved through the following technical solution: A smoke and dust removal device for blast furnace coke smelting, comprising a dust settling cylinder and a dust filter cylinder connected together, a transfer box being provided between the dust settling cylinder and the dust filter cylinder, an air inlet pipe being tangentially provided at one upper end of the dust settling cylinder, a connecting pipe connected to the transfer box being installed in the middle of the upper end of the dust settling cylinder, and an upper row pipe connected to the dust filter cylinder being installed at the upper end of the transfer box; filter elements are arranged in a ring array inside the dust filter cylinder, a rotating frame is installed at the upper end of the dust filter cylinder corresponding to the filter elements, and a scraper is provided on the outer side of the filter elements.

[0007] Preferably, an upper sealing plate and a lower sealing plate are installed at the upper and lower ends of the dust filter cartridge, respectively. The upper sealing plate and the lower sealing plate are used together to fix the filter element. An exhaust port is opened on the upper sealing plate, and a communication port connected to the upper exhaust pipe is opened on the lower sealing plate.

[0008] Preferably, a fixing plate is installed at the lower end of the dust filter cartridge corresponding to the upper sealing plate, and the filter element is rotatably mounted on the fixing plate.

[0009] Preferably, the scraper is fixed to the bottom of the fixed plate and corresponds to the outer wall of the filter element. The scraper has an arc-shaped structure, and the sharp end of the scraper abuts against the outer wall of the filter element.

[0010] Preferably, each of the filter elements is fitted with a plug at its bottom, the upper end of the plug being frustoconical and the bottom being flush with the bottom of the filter element.

[0011] Preferably, the dust collection cylinder is equipped with a vertically arranged straight exhaust pipe corresponding to the extension line of the air inlet pipe, and the lower end of the straight exhaust pipe extends to the lower side of the outer ring of the air inlet pipe.

[0012] Preferably, a rotating rod is installed at the upper end of the rotating frame, and a driving assembly is provided above the dust filter cylinder. The driving assembly includes a motor that drives the rotating rod to rotate.

[0013] The beneficial effects of this utility model are:

[0014] (1) In this utility model, on the one hand, the effective dust removal of flue gas is achieved by the dual filtration and removal action of gravity settling and fine filtration, which can solve the problem that suspended particles cannot be completely removed; on the other hand, the blockage removal of the dust filtration stage is completed by the active filtration and passive filtration methods; the two are used together to effectively eliminate dust in the coke smelting process and the dust removal efficiency is high.

[0015] (2) In the dual filtration and removal process, the flue gas enters the dust settling cylinder tangentially through the air inlet pipe and flows in a spiral pattern in the dust settling cylinder. Therefore, the particulate matter in the flue gas falls downward under the effect of gravity settling, and at the same time, the flue gas with suspended particles continues to enter the transfer box upward through the straight discharge pipe and the upper discharge pipe. Through the diversion effect of the transfer box, it enters the dust filter cylinder, and the filter element in the dust filter cylinder completes the secondary removal of the flue gas with suspended particles. Therefore, on the basis of gravity settling, the dual removal of flue gas can be completed through the fine filtration process, thereby improving the flue gas dust removal efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings;

[0017] Figure 1 This is a three-dimensional structural view of the entire utility model;

[0018] Figure 2 This is a bottom view structural diagram of this utility model;

[0019] Figure 3 This is a top view of the structure of this utility model;

[0020] Figure 4 This is a disassembled schematic diagram of the internal structure of the dust filter cartridge of this utility model;

[0021] Figure 5 This is a front sectional view of the present invention;

[0022] Figure 6This is a top sectional view of the present invention.

[0023] Legend: 1. Dust collection cylinder; 2. Dust filter cylinder; 3. Transfer box; 4. Upper exhaust pipe; 5. Connecting pipe; 6. Inlet pipe; 7. Upper sealing plate; 8. Exhaust port; 9. Lower sealing plate; 10. Fixed plate; 11. Filter element; 12. Scraper; 13. Rotating frame; 14. Rotating rod; 15. Connecting port; 16. Straight exhaust pipe; 17. Plug. Detailed Implementation

[0024] 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.

[0025] Example 1: This example is used to solve the problem of the inability to fully filter suspended dust particles.

[0026] Please see Figure 1 - Figure 6 As shown, this embodiment is a smoke and dust removal device for blast furnace coke smelting, including a dust settling cylinder 1 and a dust filter cylinder 2 connected together. A transfer box 3 is provided between the dust settling cylinder 1 and the dust filter cylinder 2. An air inlet pipe 6 is tangentially arranged at one end of the upper side of the dust settling cylinder 1. A connecting pipe 5 connected to the transfer box 3 is installed in the middle of the upper end of the dust settling cylinder 1. An upper exhaust pipe 4 connected to the dust filter cylinder 2 is installed at the upper end of the transfer box 3. A vertically arranged straight exhaust pipe 16 is installed on the dust settling cylinder 1 corresponding to the extension line of the air inlet pipe 6. The lower end of the straight exhaust pipe 16 extends to the lower side of the outer ring side of the air inlet pipe 6. The internal annular array of filter elements 11 is arranged in the dust filter cylinder 2. The filter elements 11 are of specifications that are set according to the particle size of suspended particles in the flue gas emitted from the coke oven. They can filter out the dust that has not settled during the flue gas elimination process and can be quickly disassembled, replaced and cleaned.

[0027] The dust filter cartridge 2 has an upper sealing plate 7 and a lower sealing plate 9 installed at its upper and lower ends respectively. The upper sealing plate 7 and the lower sealing plate 9 are used together to fix the filter element 11. The upper sealing plate 7 has an exhaust port 8, and the lower sealing plate 9 has a connecting port 15 connected to the upper exhaust pipe 4. The dust filter cartridge 2 has a fixing plate 10 installed at the lower end corresponding to the upper sealing plate 7. The filter element 11 is rotatably mounted on the fixing plate 10. The filter element 11 can be rotated by the drive component, thereby cooperating with the scraping component set on the outside of the filter element 11 to complete active scraping and avoid the blockage problem caused by the accumulation of dust.

[0028] Please see Figure 1 - Figure 6As shown, the process and principle of this utility model are as follows: In practical applications, the smoke and dust enter the dust settling cylinder 1 tangentially through the air inlet pipe 6 and exhibit a spiral flow in the dust settling cylinder 1. Therefore, the particulate matter in the smoke and dust falls downward under the effect of gravity settling, and at the same time, the smoke and dust with suspended particles continue to enter the transfer box 3 upward through the straight discharge pipe 16 and the upper discharge pipe 4. Through the diversion effect of the transfer box 3, the smoke and dust enter the dust filter cylinder 2, and the filter element 11 in the dust filter cylinder 2 completes the secondary removal of the smoke and dust with suspended particles. Therefore, on the basis of gravity settling, the smoke and dust can also be doubled through the fine filtration process, thereby improving the dust removal efficiency of the flue gas.

[0029] Example 2: This example is used to solve the problem that the smoke and dust cannot be removed in real time after filtration.

[0030] Please see Figure 1 , Figure 4 - Figure 6 As shown, this embodiment of a smoke and dust removal device for blast furnace coke smelting includes a dust filter cylinder 2 with a rotating frame 13 installed at the upper end corresponding to the filter element 11, and a scraper 12 is provided on the outer side of the filter element 11. The scraper 12 is fixed to the bottom of the fixed plate 10 and corresponds to the outer wall of the filter element 11. The scraper 12 has an arc-shaped structure, and the sharp end of the scraper 12 abuts against the outer wall of the filter element 11. A rotating rod 14 is installed at the upper end of the rotating frame 13. A drive assembly is provided above the dust filter cylinder 2. The drive assembly includes a motor that drives the rotating rod 14 to rotate. The motor can drive the filter element 11 to rotate through the rotating frame 13, so that the scraper 12 on the outer side of the filter element 11 can quickly scrape off the dust particles attached to the surface of the filter element 11, and simultaneously blow in the dust. On the basis of scraping, the dust can be blown by air. The combination of the two can avoid the phenomenon of dust removal failure caused by dust blockage, and no shutdown maintenance is required during the flue gas filtration process.

[0031] Each filter element 11 is equipped with a plug 17 at its bottom. The upper end of the plug 17 is truncated cone-shaped and the bottom is flush with the bottom of the filter element 11. During the dust filtration process, the plug 17 can effectively collect the scraped particles and complete the rapid recovery during the shutdown phase.

[0032] Please see Figure 3 - Figure 6 As shown, this embodiment achieves active filtration by rotating the filter element 11 itself, and completes passive filtration by continuously conveying the dust, thus avoiding clogging during the dust filtration stage and preventing the failure of flue gas filtration.

[0033] Combining Embodiment 1 and Embodiment 2, on the one hand, the effective dust removal of flue gas is achieved through the dual filtration and removal action of gravity settling and fine filtration, which can solve the problem that suspended particles cannot be completely removed; on the other hand, the blockage removal in the flue gas filtration stage is completed through the combined removal methods of active filtration and passive filtration. The combination of the two can effectively eliminate flue gas in the coking process, and the flue gas elimination efficiency is high.

[0034] Example 3: This example combines Examples 1 and 2 to construct a method for smoke and dust removal in blast furnace coke smelting, including the following steps:

[0035] Step 1: The smoke and dust enter the dust settling cylinder 1 tangentially through the air inlet pipe 6 and flow in a spiral in the dust settling cylinder 1. Therefore, the particulate matter in the smoke and dust falls downward under the effect of gravity settling, and at the same time, the smoke and dust with suspended particles continue to enter the transfer box 3 upward through the straight discharge pipe 16 and the upper discharge pipe 4.

[0036] Step 2: The dust enters the dust filter cartridge 2 through the diversion effect of the transfer box 3, and the filter element 11 in the dust filter cartridge 2 completes the secondary removal of dust with suspended particles.

[0037] Step 3: In step 2, the motor can drive the filter element 11 to rotate through the rotating frame 13, so that the scraper 12 on the outside of the filter element 11 can quickly scrape off the dust particles attached to the surface of the filter element 11, and simultaneously blow in the dust to carry out the dust removal on the basis of scraping. The combination of the two can avoid the dust removal failure caused by dust blockage, and no shutdown maintenance is required during the flue gas filtration process.

[0038] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A smoke and dust removal device for blast furnace coke smelting, comprising a dust settling cylinder (1) and a dust filter cylinder (2) connected in series, characterized in that, A transfer box (3) is provided between the dust collection cylinder (1) and the dust filter cylinder (2). An air inlet pipe (6) is tangentially provided at one end of the upper side of the dust collection cylinder (1). A connecting pipe (5) connected to the transfer box (3) is installed in the middle of the upper end of the dust collection cylinder (1). An upper row pipe (4) connected to the dust filter cylinder (2) is installed at the upper end of the transfer box (3). Filter elements (11) are arranged in a ring array inside the dust filter cylinder (2). A rotating frame (13) is installed at the upper end of the dust filter cylinder (2) corresponding to the filter element (11). A scraper (12) is provided on the outer side of the filter element (11).

2. The smoke and dust removal equipment for blast furnace coke smelting according to claim 1, characterized in that, The upper and lower ends of the dust filter cartridge (2) are respectively equipped with an upper sealing plate (7) and a lower sealing plate (9). The upper sealing plate (7) and the lower sealing plate (9) are used together to fix the filter element (11). The upper sealing plate (7) is provided with an exhaust port (8), and the lower sealing plate (9) is provided with a communication port (15) that is connected to the upper exhaust pipe (4).

3. The smoke and dust removal equipment for blast furnace coke smelting according to claim 2, characterized in that, The dust filter cartridge (2) is fitted with a fixing plate (10) at the lower end of the upper sealing plate (7), and the filter element (11) is rotatably mounted on the fixing plate (10).

4. The smoke and dust removal equipment for blast furnace coke smelting according to claim 1, characterized in that, The scraper (12) is fixed to the bottom of the fixed plate (10) and corresponds to the outer wall of the filter element (11). The scraper (12) has an arc-shaped structure, and the sharp end of the scraper (12) abuts against the outer wall of the filter element (11).

5. The smoke and dust removal equipment for blast furnace coke smelting according to claim 1, characterized in that, Each of the filter elements (11) is fitted with a plug (17) at its bottom, the upper end of the plug (17) being frustoconical and the bottom being flush with the bottom of the filter element (11).

6. The smoke and dust removal equipment for blast furnace coke smelting according to claim 1, characterized in that, The dust collection cylinder (1) is equipped with a vertically arranged straight exhaust pipe (16) on the extension line of the air inlet pipe (6), and the lower end of the straight exhaust pipe (16) extends to the lower side of the outer ring of the air inlet pipe (6).

7. The smoke and dust removal equipment for blast furnace coke smelting according to claim 1, characterized in that, A rotating rod (14) is installed at the upper end of the rotating frame (13), and a driving assembly is provided above the dust filter (2). The driving assembly includes a motor that drives the rotating rod (14) to rotate.

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