Pre-desulfurization anti-blocking device for desulfurization tower

Abstract

The pre-desulfurization anti-blocking device comprises a tower body and a pre-desulfurization box, the left side of the lower part of the tower body is communicated with a smoke inlet pipe, and one end, far away from the tower body, of the smoke inlet pipe is communicated with the pre-desulfurization box; according to the utility model, the pre-desulfurization box with the triangular filter box is arranged at the flue gas inlet end of the tower body, when flue gas enters the pre-desulfurization box through the flue gas supply pipe, the flue gas firstly enters the triangular filter box, and the filter screen is arranged on the inclined surface of the triangular filter box; partition plates with through holes are arranged in the triangular filtering box at equal intervals corresponding to the filtering net, so that a flue gas temporary storage cavity is formed between every two adjacent partition plates of the triangular filtering box, and a plurality of equally divided flue gas filtering intervals are formed in the filtering net under the action of the flue gas temporary storage cavities; and the flue gas can be transferred to another flue gas temporary storage cavity under the action of the through holes in the surface of the partition plate, so that the purpose of long-acting filtration of the flue gas is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization towers, in particular to a pre-desulfurization anti-blocking device for desulfurization towers. Background Art

[0002] Desulfurization tower is a tower-type equipment for desulfurization of industrial waste gas. Desulfurization tower was originally built with granite and was most widely used. It uses the principle of water film desulfurization and dust removal, and is also known as granite water film desulfurization dust collector, or granite water film desulfurization dust collector. The advantage is that it is easy to maintain, and different dust removal agents can be prepared to achieve the effects of dust removal and desulfurization (denitrification) at the same time.

[0003] After searching, publication number CN218306859U discloses a desulfurization tower anti-blocking device for a desulfurization system, including a tower body, a filter screen is fixedly provided inside the tower body, an air outlet pipe is provided at the top of the tower body, and a first connecting pipe and a drain pipe are respectively provided at the bottom ends of both sides of the tower body, a booster fan is provided at one end of the first connecting pipe, a second connecting pipe is provided at one end of the booster fan, and a filter shell is provided at one end of the second connecting pipe. The beneficial effect of the utility model is that the flue gas can be filtered before entering the interior of the desulfurization tower, reducing the dust entering the tower body, thereby preventing the pipeline from being blocked, and the filter shell is easy to disassemble and clean, and the filtering effect can be guaranteed. By arranging a material pump and a suction pipe, solid impurities precipitated at the bottom of the inner cavity of the tower body can be processed, and by arranging a filter screen, the gas after desulfurization can be filtered to reduce impurities. By arranging a sealing cover and a blocking block, it is convenient to pull out or put in the hose inside the tower body, and it is convenient to clean the hose.

[0004] In the above scheme, a filter housing is provided at the flue gas inlet end of the tower body to reduce dust entering the tower body, thereby preventing the pipeline from being blocked. However, no pre-desulfurization structure is provided in this scheme. Without clearly indicating that the tower body has the function of detecting the sulfur content of the outlet gas, incomplete desulfurization may occur, which is not conducive to the safe discharge of the flue gas after treatment.

[0005] To this end, a pre-desulfurization and anti-blocking device for a desulfurization tower is proposed, which has the advantages of pre-desulfurization and anti-blocking, and thus solves the problems in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a pre-desulfurization anti-blocking device for a desulfurization tower.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pre-desulfurization anti-blocking device for a desulfurization tower, comprising a tower body and a pre-desulfurization box, the lower left side of the tower body is connected with a smoke inlet pipe, and the end of the smoke inlet pipe away from the tower body is connected with the pre-desulfurization box, the left end of the pre-desulfurization box is connected with a smoke supply pipe, and the pre-desulfurization box is built-in with a triangular filter box connected to the smoke supply pipe, a filter screen is embedded and installed on the inclined surface of the triangular filter box, and a plurality of partitions are welded at equal intervals inside the triangular filter box, and a through hole is opened on the surface of each partition, a flue gas temporary storage cavity is formed between two adjacent partitions of the triangular filter box, the filter screen is equally divided into a plurality of flue gas filtering intervals by the plurality of flue gas temporary storage cavities, a maintenance port is opened on the top surface of the pre-desulfurization box corresponding to the triangular filter box, a discharge pipe and a drain pipe are arranged on one side from top to bottom on the right side of the lower part of the tower body, and the discharge pipe and the drain pipe are extended to the inner side of the tower body, and an agitator is arranged at the lower part of the pre-desulfurization box.

[0008] As a further description of the above technical solution: a fixing plate is welded on the top of the triangular filter box, and a plurality of insertion holes are opened on the surface of the fixing plate, a plurality of threaded columns are welded on the inner wall of the pre-desulfurization box, and each threaded column passes through the insertion hole of the fixing plate and is screwed with a butterfly nut.

[0009] As a further description of the above technical solution: the stirrer is composed of a motor and a stirring paddle fixedly connected to the output end thereof, and a plurality of groups of stirring columns are arranged at equal intervals on the stirring paddle of the stirrer.

[0010] As a further description of the above technical solution: a flange joint with a check valve is provided at the left end of the pre-desulfurization box corresponding to the smoke supply pipe, and another flange joint is provided at the top end of the pre-desulfurization box corresponding to the smoke inlet pipe.

[0011] As a further description of the above technical solution: the several partitions of the triangular filter box are all in a right-angled triangle structure, and the smoke supply pipe is connected to one of the smoke temporary storage chambers of the triangular filter box.

[0012] As a further description of the above technical solution: the size of the inner space of the maintenance port is compatible with the size of the triangular filter box, and the maintenance port is located directly above the triangular filter box.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, a pre-desulfurization box with a triangular filter box is arranged at the flue gas inlet end of the tower body. When the flue gas enters the pre-desulfurization box from the smoke supply pipe, the flue gas first enters the triangular filter box. Since a filter screen is arranged on the inclined surface of the triangular filter box, and partitions with through holes are arranged at equal intervals inside the triangular filter box corresponding to the filter screen, a flue gas temporary storage cavity is formed between two adjacent partitions of the triangular filter box, and the filter screen is formed into a plurality of equally divided flue gas filtration intervals under the action of the plurality of flue gas temporary storage cavities. When one of the flue gas filtration intervals of the filter screen is blocked, the flue gas is transferred to another flue gas temporary storage cavity under the action of the through holes on the surface of the partition, so as to achieve the purpose of long-term filtration of the flue gas, and the effect of flue gas pre-desulfurization is achieved by the alkali solution injected into the pre-desulfurization box. Compared with the prior art, the utility model has the advantages of flue gas filtration anti-blocking and pre-desulfurization, which not only improves the desulfurization efficiency of the tower body, but also reduces the blockage of the pipeline inside the tower body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a pre-desulfurization anti-blocking device for a desulfurization tower according to the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a pre-desulfurization box of a pre-desulfurization anti-blocking device for a desulfurization tower according to the utility model;

[0017] Figure 3 The utility model is a schematic diagram of the triangular filter box structure of a pre-desulfurization anti-blocking device for a desulfurization tower.

[0018] Legend:

[0019] 1. Tower body; 2. Pre-desulfurization box; 3. Smoke supply pipe; 4. Smoke inlet pipe; 5. Agitator; 6. Discharge pipe; 7. Drain pipe; 8. Maintenance port; 9. Triangular filter box; 10. Filter screen; 11. Partition; 12. Fixing plate; 13. Threaded column; 14. Butterfly nut; 15. Through hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] According to an embodiment of the utility model, a pre-desulfurization anti-blocking device for a desulfurization tower is provided.

[0022] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3As shown, a pre-desulfurization anti-blocking device for a desulfurization tower according to an embodiment of the utility model comprises a tower body 1 and a pre-desulfurization box 2, a smoke inlet pipe 4 is connected to the left side of the lower part of the tower body 1, and the end of the smoke inlet pipe 4 away from the tower body 1 is connected to the pre-desulfurization box 2, the left end of the pre-desulfurization box 2 is connected to the smoke supply pipe 3, and the pre-desulfurization box 2 is internally installed with a triangular filter box 9 connected to the smoke supply pipe 3, a filter screen 10 is embedded and installed on the inclined surface of the triangular filter box 9, and a plurality of partitions 11 are welded at equal intervals inside the triangular filter box 9, and a through hole 15 is opened on the surface of each partition 11, and a flue gas temporary storage chamber is formed between two adjacent partitions 11 of the triangular filter box 9. The filter screen 10 is equally divided into several flue gas filtering sections by several flue gas temporary storage chambers. A maintenance port 8 is provided on the top surface of the pre-desulfurization box 2 corresponding to the triangular filter box 9. A discharge pipe 6 and a drain pipe 7 are provided on the right side of the lower part of the tower body 1 from top to bottom, and the discharge pipe 6 and the drain pipe 7 are extended to the inner side of the tower body 1. A stirrer 5 is provided at the lower part of the pre-desulfurization box 2. The alkali solution of the device is caustic soda and water are fully mixed and stirred in the alkali solution preparation tank to prepare a caustic soda slurry with a concentration of 10% to 15%. The cross section of the triangular filter box 9 is specifically a right-angled triangle structure. The filter screen 10 and the triangular filter box 9 are detachably connected, which is easy to clean the impurities inside the triangular filter box 9;

[0023] In one embodiment, a fixing plate 12 is welded to the top of the triangular filter box 9, and a plurality of insertion holes are provided on the surface of the fixing plate 12. A plurality of threaded columns 13 are welded to the inner wall of the pre-desulfurization box 2, and each threaded column 13 passes through the insertion hole of the fixing plate 12 and is screwed with a butterfly nut 14. By unlocking the butterfly nut 14 threadedly connected to the surface of the threaded column 13, the fixing plate 12 on the top of the triangular filter box 9 is disengaged from the plug-in state with the threaded column 13, and then the triangular filter box 9 is lifted so that the triangular filter box 9 is guided out of the maintenance port 8, so as to facilitate the replacement and maintenance of the triangular filter box 9.

[0024] In one embodiment, the agitator 5 is composed of a motor and a stirring paddle fixed to its output end, and a plurality of groups of stirring columns are arranged at equal intervals on the stirring paddle of the agitator 5. Through the arrangement of the agitator 5, the flue gas can be stirred when it passes into the triangular filter box 9, thereby increasing the contact effect between the flue gas and the alkali solution, which is beneficial to improving the effect of the pre-desulfurization.

[0025] In one embodiment, a flange joint with a check valve is provided at the left end of the pre-desulfurization box 2 corresponding to the smoke supply pipe 3, and another flange joint is provided at the top of the pre-desulfurization box 2 corresponding to the smoke inlet pipe 4, that is, the pre-desulfurization box 2 is connected with the smoke supply pipe 3 and the smoke inlet pipe 4 through two flange joints, which facilitates pre-desulfurization while meeting the smoke supply of the tower body 1.

[0026] In one embodiment, the several partitions 11 of the triangular filter box 9 are all in a right-angled triangle structure, and the smoke supply pipe 3 is connected to one of the smoke temporary storage chambers of the triangular filter box 9. Through the arrangement of the several smoke temporary storage chambers of the triangular filter box 9, when the smoke filtering interval corresponding to the smoke temporary storage chamber is blocked, the smoke can be automatically transferred from the through hole 15 to another smoke temporary storage chamber, thereby ensuring the smoke filtering effect.

[0027] In one embodiment, the size of the inner space of the maintenance port 8 is adapted to the size of the triangular filter box 9, and the maintenance port 8 is located directly above the triangular filter box 9. The maintenance port 8 is provided to facilitate the removal and placement of the triangular filter box 9.

[0028] Working principle:

[0029] When in use, firstly, alkali solution is poured into the pre-desulfurization box 2, and then the stirrer 5 of the pre-desulfurization box 2 is started to stir the alkali solution, and the sulfur-containing flue gas is introduced into the pre-desulfurization box 2 through the smoke supply pipe 3 for pre-desulfurization treatment, and then introduced into the tower body 1 through the smoke inlet pipe 4 for spray-type deep desulfurization treatment. When the flue gas enters the pre-desulfurization box 2 through the smoke supply pipe 3, the flue gas first enters the triangular filter box 9. Since the filter screen 10 is arranged on the inclined surface of the triangular filter box 9, and the partitions 11 with through holes 15 are arranged at equal intervals inside the triangular filter box 9 corresponding to the filter screen 10, a flue gas temporary storage cavity is formed between two adjacent partitions 11 of the triangular filter box 9, and the filter screen 10 is placed between several flue gas temporary storage cavities. Under the action of the cavity, a number of equally divided flue gas filtration intervals are formed. When one of the flue gas filtration intervals of the filter screen 10 is blocked, the flue gas will be transferred to another flue gas temporary storage cavity under the action of the through holes 15 on the surface of the partition 11, so as to achieve the purpose of long-term filtration of the flue gas, and the flue gas pre-desulfurization effect is achieved through the alkali liquid injected into the pre-desulfurization box 2. When the triangular filter box 9 needs to be replaced, the butterfly nut 14 threadedly connected to the surface of the threaded column 13 is unlocked, so that the fixing plate 12 on the top of the triangular filter box 9 can be separated from the plug-in state of the threaded column 13, and then the triangular filter box 9 is lifted, so that the triangular filter box 9 is guided out from the maintenance port 8, which is convenient for the replacement and maintenance of the triangular filter box 9.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pre-desulfurization anti-blocking device for a desulfurization tower, comprising a tower body (1) and a pre-desulfurization box (2), characterized in that: The lower left side of the tower body (1) is connected to a smoke inlet pipe (4), and the end of the smoke inlet pipe (4) away from the tower body (1) is connected to a pre-desulfurization box (2), the left end of the pre-desulfurization box (2) is connected to a smoke supply pipe (3), and the pre-desulfurization box (2) is internally installed with a triangular filter box (9) connected to the smoke supply pipe (3), a filter screen (10) is embedded and installed on the inclined surface of the triangular filter box (9), and a plurality of partitions (11) are welded at equal intervals inside the triangular filter box (9), and each partition (11) is provided with a through hole (10) on the surface thereof. 5), a flue gas temporary storage cavity is formed between two adjacent partitions (11) of the triangular filter box (9), the filter screen (10) is equally divided into a plurality of flue gas filtering sections by the plurality of flue gas temporary storage cavities, a maintenance port (8) is provided on the top surface of the pre-desulfurization box (2) corresponding to the triangular filter box (9), a discharge pipe (6) and a drainage pipe (7) are provided on one side from top to bottom of the lower right side of the tower body (1), and the discharge pipe (6) and the drainage pipe (7) both extend to the inner side of the tower body (1), and a stirrer (5) is provided at the lower part of the pre-desulfurization box (2).

2. The pre-desulfurization anti-blocking device for a desulfurization tower according to claim 1, characterized in that: A fixing plate (12) is welded on the top of the triangular filter box (9), and a plurality of insertion holes are provided on the surface of the fixing plate (12). A plurality of threaded columns (13) are welded on the inner wall of the pre-desulfurization box (2), and each threaded column (13) passes through the insertion hole of the fixing plate (12) and is screwed with a butterfly nut (14).

3. The pre-desulfurization anti-blocking device for a desulfurization tower according to claim 1, characterized in that: The stirrer (5) is composed of a motor and a stirring paddle fixedly connected to the output end thereof, and a plurality of groups of stirring columns are arranged at equal intervals on the stirring paddle of the stirrer (5).

4. The pre-desulfurization anti-blocking device for a desulfurization tower according to claim 1, characterized in that: A flange joint with a check valve is provided at the left end of the pre-desulfurization box (2) corresponding to the smoke supply pipe (3), and another flange joint is provided at the top end of the pre-desulfurization box (2) corresponding to the smoke inlet pipe (4).

5. The pre-desulfurization anti-blocking device for a desulfurization tower according to claim 1, characterized in that: The plurality of partitions (11) of the triangular filter box (9) are all in a right-angled triangle structure, and the smoke supply pipe (3) is connected to one of the smoke temporary storage chambers of the triangular filter box (9).

6. The pre-desulfurization anti-blocking device for a desulfurization tower according to claim 1, characterized in that: The size of the inner space of the maintenance port (8) matches the size of the triangular filter box (9), and the maintenance port (8) is located directly above the triangular filter box (9).

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