Dry quenching coke oven flue gas purification device

Abstract

The utility model discloses a dry quenching coke oven flue gas purification device which comprises a flue gas inlet pipeline, a flue gas condenser is communicated with the flue gas inlet pipeline, a connecting pipe is communicated with the flue gas condenser, a dust removal box is communicated with the connecting pipe, a vertical pipe is communicated with the dust removal box, an absorption box is communicated with the vertical pipe, and the absorption box is communicated with the flue gas condenser. During use, a part of the concave plate on the lower portion is drawn out, flue gas enters the dust removal box and then is subjected to dust removal through the cloth bag on the sleeve on the upper portion, and the flue gas subjected to dust removal is discharged through the vertical pipe and enters the absorption liquid in the absorption box. The absorption liquid absorbs sulfides and cyanides in the flue gas for purification treatment, and through the passage of time, when the upper cloth bag is saturated, the lower concave plate is pushed into the dust removal box, a part of the upper concave plate is quickly pulled out, the cloth bag is replaced, and the upper and lower concave plates alternately work, so that the flue gas discharged by the dry quenching coke oven can be subjected to non-stop dust removal treatment.

Description

Technical Field

[0001] This patent relates to the field of dry coke quenching, and specifically to a dry coke quenching coke oven flue gas purification device. Background Art

[0002] The so-called dry quenching process, relative to wet quenching, refers to a quenching process method that uses inert gas to cool down red coke. During the dry quenching process, red coke is loaded from the top of the dry quenching furnace, and the low-temperature inert gas is blown into the red coke layer in the cooling section of the dry quenching furnace by the circulating fan to absorb the sensible heat of the red coke. The cooled coke is discharged from the bottom of the dry quenching furnace, and the high-temperature inert gas coming out of the annular flue of the dry quenching furnace flows through the dry quenching process boiler for heat exchange. The boiler generates steam, and the cooled inert gas is re-blown into the dry quenching furnace by the circulating fan. The inert gas is recycled in a closed system. During the dry quenching process, the flue gas needs to be dusted and purified. At present, bag dust removal is used. Because the bags will be saturated after long-term use, it is necessary to stop the machine to replace the bags and continue dust removal, which makes the continuous work efficiency of dry quenching low. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of this patent is to provide a dry quenching coke oven flue gas purification device.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a coke dry quenching coke oven flue gas purification device, including a flue gas inlet pipe, the flue gas inlet pipe is connected to a flue gas condenser, the flue gas condenser is connected to a connecting pipe, the connecting pipe is connected to a dust removal box, the dust removal box is connected to a vertical pipe, the vertical pipe is connected to an absorption box, the absorption box is connected to a liquid inlet pipe, and the absorption box is connected to an exhaust pipe;

[0005] A dust removal structure is installed in the dust removal box, and the dust removal structure is divided into an upper dust removal structure and a lower dust removal structure, and the upper dust removal structure and the lower dust removal structure are both composed of a square mouth, a rubber frame, a concave plate, a mounting hole, a sleeve, a cloth bag and a mesh plate;

[0006] The square opening is opened on the dust removal box, the rubber frame is installed in the square opening, the concave plate passes through the rubber frame and is placed in the dust removal box, a plurality of mounting holes are opened on the concave plate, sleeves are respectively placed in the mounting holes, cloth bags are respectively covered on the sleeves, and the mesh plate is installed in the concave plate.

[0007] Furthermore, the absorption box is connected with a connecting pipe, an electric valve is installed on the connecting pipe, the connecting pipe is connected with a reaction box, the reaction box is connected with an air intake pipe, and the reaction box is connected with a discharge pipe.

[0008] Furthermore, a positioning structure is installed between the concave plate and the dust removal box, the positioning structure is arranged corresponding to the concave plate, and the positioning structure includes a positioning block and a positioning groove;

[0009] The positioning block is installed on the concave plate, the positioning groove is arranged in the dust removal box, and the positioning block is positioned in the positioning groove.

[0010] Furthermore, a support plate is installed between the absorption box and the reaction box, and the number of the support plates is two. The support plates are symmetrically distributed on both sides with the center line of the absorption box as the center.

[0011] Furthermore, a pull ring is installed on the concave plate, and the pull ring is arranged corresponding to the concave plate.

[0012] Furthermore, the absorption box contains absorption liquid, and the vertical pipe is inserted into the absorption liquid.

[0013] The beneficial effects of this patent are:

[0014] 1. When in use, first pull out a part of the concave plate at the bottom. After the flue gas enters the dust removal box, it passes through the bag on the upper sleeve for dust removal. The dust-removed flue gas is discharged through the vertical pipe into the absorption liquid in the absorption box. The absorption liquid absorbs the sulfide and cyanide in the flue gas for purification. As time goes by, when the bag at the top is saturated, push the concave plate at the bottom into the dust removal box, and quickly pull out a part of the concave plate at the top, and replace the bag, so that the upper and lower concave plates work alternately, so that the flue gas discharged from the dry coke quenching coke oven can be dusted continuously;

[0015] 2. When replacing the cloth bag on the sleeve, pull the sleeve together with the cloth bag out of the mounting hole on the concave plate, and remove the cloth bags on the sleeve one by one for replacement, which is convenient for replacing the cloth bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the patent structure.

[0017] Figure 2 This is a schematic diagram of the concave plate, sleeve and positioning block structure of the patent.

[0018] Figure 3 This is a schematic diagram of the concave plate, mesh plate and positioning block structure of this patent.

[0019] Figure 4 It is a schematic diagram of the structure at A of this patent.

[0020] Explanation of the reference numerals: 1 smoke inlet duct, 2 smoke condenser, 3 connecting pipe, 4 dust removal structure, 401 square mouth, 402 rubber frame, 403 concave plate, 404 mounting hole, 405 sleeve, 406 cloth bag, 407 mesh plate, 5 dust removal box, 6 vertical pipe, 7 absorption box, 8 liquid inlet pipe, 9 absorption liquid, 10 exhaust pipe, 11 connecting pipe, 12 electric valve, 13 reaction box, 14 support plate, 15 air inlet pipe, 16 exhaust pipe, 17 positioning structure, 18 positioning block, 19 positioning groove, 20 pull ring. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to the application.

[0022] See also Figure 1-4 This is a schematic diagram of the structure of the patent, a CDQ coke oven flue gas purification device, including a smoke inlet pipe 1, the smoke inlet pipe 1 is connected to the CDQ coke oven exhaust port, the smoke inlet pipe 1 is connected to a smoke condenser 2, the smoke is discharged into the smoke condenser 2 through the smoke inlet pipe 1, the smoke condenser 6 cools the smoke to below 120°C, the smoke condenser 2 is connected to a connecting pipe 3, the connecting pipe 3 is connected to a dust removal box 5, the cooled smoke is discharged into the dust removal box 5 through the connecting pipe 3 for dust removal, the dust removal box 5 is connected to a connecting pipe 3, and the dust removal box 5 is connected to a connecting pipe 3. A vertical pipe 6 is connected, an absorption box 7 is connected to the vertical pipe 6, an inlet pipe 8 is connected to the absorption box 7, an absorption liquid 9 is stored in the absorption box 7, the vertical pipe 6 is inserted into the absorption liquid 9, an exhaust pipe 10 is connected to the absorption box 7, the absorption liquid 9 is discharged into the collection box 7 through the inlet pipe 8, and does not pass through the vertical pipe 6. The dust-removed gas is discharged into the absorption liquid 9 through the vertical pipe 6, so that the absorption liquid 9 absorbs the sulfide and cyanide in the flue gas for purification, and then the filtered flue gas is extracted through the exhaust pipe 10;

[0023] The flue gas condenser 2 and the absorption liquid 9 can refer to patent number: CN202222228755.X;

[0024] A dust removal structure 4 is installed in the dust removal box 5. The dust removal structure 4 is divided into an upper dust removal structure and a lower dust removal structure. The upper dust removal structure and the lower dust removal structure are both composed of a square opening 401, a rubber frame 402, a concave plate 403, a mounting hole 404, a sleeve 405, a cloth bag 406 and a mesh plate 407.

[0025] The square opening 401 is provided on the dust removal box 5, the rubber frame 402 is installed in the square opening 402, the concave plate 403 passes through the rubber frame 402 and is placed in the dust removal box 5, the rubber frame 402 seals the gap between the concave plate 403 and the square opening 401, the concave plate 403 is provided with seven rows and seven columns of mounting holes 404, sleeves 405 are respectively placed in the mounting holes 404, and the sleeves 405 are respectively covered with cloth bags 406, and the mesh plate 407 is installed in the concave plate 403, and the mesh plate 407 is made of stainless steel with through holes on the surface. When in use, firstly a part of the concave plate 403 below is pulled out, and after the smoke enters the dust removal box 5, it passes through the sleeve 405 above. The bag 406 removes dust, and the smoke after dust removal is discharged through the vertical pipe 6. With the passage of time, when the upper bag 406 is saturated, the lower concave plate 403 is pushed into the dust removal box 5, and a part of the upper concave plate 403 is quickly pulled out (the sleeve 405 can be removed), and the bag 406 is replaced. The upper and lower concave plates 403 work alternately, so that the smoke discharged from the dry quenching coke oven can be dusted continuously. When replacing the bag 406 on the sleeve 405, the sleeve 405 and the bag 406 are pulled out from the mounting hole 404 on the concave plate 403, and the bags 406 on the sleeve 405 are removed one by one for replacement, and it is convenient to replace the bags 406.

[0026] The absorption box 7 is connected with a connecting pipe 11, and an electric valve 12 is installed on the connecting pipe 11. The electric valve 12 works when it is powered on. The connecting pipe 11 is connected with a reaction box 13, and the reaction box 13 is connected with an air inlet pipe 15. The reaction box 13 is connected with a discharge pipe 16. The electric valve 12 is started to make the absorption liquid fall into the reaction box 13, and then the electric valve 12 is closed, and high-temperature steam is injected into the reaction box through the air inlet pipe 15 to heat up the absorption liquid and volatilize it, and a heating stripping reaction is carried out. Then the steam is extracted through the discharge pipe 16 to facilitate the recovery of harmful gases for the production of sulfur or sulfuric acid.

[0027] A positioning structure 17 is installed between the concave plate 403 and the dust removal box 5. The positioning structure 17 is arranged corresponding to the concave plate 403. The positioning structure 17 includes a positioning block 18 and a positioning groove 19.

[0028] The positioning block 18 is installed on the concave plate 403, and the positioning groove 19 is opened in the dust removal box 5. The positioning block 18 is positioned in the positioning groove 19. When the concave plate 403 extends into the dust removal box 5, the positioning block 18 is positioned in the positioning groove 19, so that the concave plate 403 and the dust removal box 5 are installed horizontally.

[0029] A support plate 14 is installed between the absorption box 7 and the reaction box 13 . There are two support plates 14 . The support plates 14 are symmetrically distributed on both sides with the center line of the absorption box 7 as the center. The support plates 14 on the reaction box 13 support the absorption box 7 .

[0030] A pull ring 20 is installed on the concave plate 403 . The pull ring 20 is arranged corresponding to the concave plate 403 . The concave plate 403 is moved by dragging the pull ring 20 .

[0031] When the present invention is working, a part of the concave plate 403 at the bottom is firstly pulled out, and the absorption liquid 9 is discharged into the absorption box 7 through the liquid inlet pipe 8, and does not pass through the vertical pipe 6. The flue gas is discharged into the flue gas condenser 2 through the smoke inlet pipe 1. The flue gas condenser 6 cools the flue gas to below 120°C. The cooled flue gas is discharged into the dust removal box 5 through the connecting pipe 3, and the dust is removed by the bag 406 on the upper sleeve 405. The dust-removed flue gas is discharged through the vertical pipe 6. With the passage of time, when the upper bag 406 is saturated, the concave plate 403 at the bottom is pushed into the dust removal box 5, and a part of the upper concave plate 403 is quickly pulled out (the sleeve 405 can be removed), and the bag 406 is replaced, so that the upper and lower concave plates 403 work alternately. , the flue gas discharged from the dry quenching coke oven can be continuously dust-removed, and the dust-removed gas is discharged into the absorption liquid 9 through the vertical pipe 6, so that the absorption liquid 9 absorbs the sulfide and cyanide in the flue gas for purification, and then the filtered flue gas is extracted through the exhaust pipe 10, the electric valve 12 is started, the absorption liquid falls into the reaction box 13, and then the electric valve 12 is closed, and high-temperature steam is injected into it through the air inlet pipe 15, so that the absorption liquid heats up and evaporates, and a heating stripping reaction is carried out, and then the steam is extracted through the exhaust pipe 16, which is convenient for recovering harmful gases for making sulfur or sulfuric acid. When the concave plate 403 extends into the dust removal box 5, the positioning block 18 is positioned in the positioning groove 19, so that the concave plate 403 and the dust removal box 5 are installed horizontally.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coke oven flue gas purification device for dry quenching, comprising a flue gas inlet duct (1), characterized in that: The smoke inlet pipe (1) is connected to a smoke condenser (2), the smoke condenser (2) is connected to a connecting pipe (3), the connecting pipe (3) is connected to a dust removal box (5), the dust removal box (5) is connected to a vertical pipe (6), the vertical pipe (6) is connected to an absorption box (7), the absorption box (7) is connected to a liquid inlet pipe (8), and the absorption box (7) is connected to an exhaust pipe (10); A dust removal structure (4) is installed in the dust removal box (5), and the dust removal structure (4) is divided into an upper dust removal structure and a lower dust removal structure, and the upper dust removal structure and the lower dust removal structure are both composed of a square opening (401), a rubber frame (402), a concave plate (403), a mounting hole (404), a sleeve (405), a cloth bag (406), and a mesh plate (407); The square opening (401) is provided on the dust removal box (5), the rubber frame (402) is installed in the square opening (401), the concave plate (403) passes through the rubber frame (402) and is placed in the dust removal box (5), a plurality of mounting holes (404) are provided on the concave plate (403), sleeves (405) are respectively placed in the mounting holes (404), cloth bags (406) are respectively placed on the sleeves (405), and the mesh plate (407) is installed in the concave plate (403).

2. A dry quenching coke oven flue gas purification device according to claim 1, characterized in that: The absorption box (7) is connected to a connecting pipe (11), an electric valve (12) is installed on the connecting pipe (11), the connecting pipe (11) is connected to a reaction box (13), the reaction box (13) is connected to an air intake pipe (15), and the reaction box (13) is connected to a discharge pipe (16).

3. A dry quenching coke oven flue gas purification device according to claim 1, characterized in that: A positioning structure (17) is installed between the concave plate (403) and the dust removal box (5), the positioning structure (17) being arranged corresponding to the concave plate (403), and the positioning structure (17) comprising a positioning block (18) and a positioning groove (19); The positioning block (18) is mounted on the concave plate (403), the positioning groove (19) is provided in the dust removal box (5), and the positioning block (18) is positioned in the positioning groove (19).

4. A CDQ coke oven flue gas purification device according to claim 2, characterized in that: A support plate (14) is installed between the absorption box (7) and the reaction box (13), the number of the support plates (14) being two, and the support plates (14) are symmetrically distributed on both sides with the midline of the absorption box (7) as the center.

5. The CDQ coke oven flue gas purification device according to claim 1, characterized in that: A pull ring (20) is installed on the concave plate (403), and the pull ring (20) is arranged corresponding to the concave plate (403).

6. A CDQ coke oven flue gas purification device according to claim 1, characterized in that: The absorption box (7) contains absorption liquid (9), and the vertical pipe (6) is inserted into the absorption liquid (9).

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