Fixed bed desulfurization tower integrated with dust removal function

Abstract

The utility model relates to the technical field of fixed bed desulfurization, and discloses a fixed bed desulfurization tower integrated with a dust removal function, which comprises a fixed bed desulfurization tower body, the bottom end of the fixed bed desulfurization tower body is fixedly connected with a support, and the left and right ends of the inner side of the fixed bed desulfurization tower body are fixedly connected with filter plates; an impurity scraping assembly is arranged at the top end of the fixed bed desulfurization tower body, the impurity scraping assembly is used for scraping impurities on the two filter plates, baffles are fixedly connected to the positions, at the tops of the opposite ends of the filter plates, in the fixed bed desulfurization tower body, and a second filler layer is fixedly connected to the bottoms of the opposite ends of the two baffles. According to the flue gas desulfurization device disclosed by the utility model, the flue gas inlet pipe, the branch pipe, the filler layer I, the filler layer II and the air inducing assembly are matched, so that the desulfurization efficiency can be accelerated, and the filter plate, the clamping assembly and the scraping assembly can remove impurities such as particulate matters in flue gas to prevent the impurities from influencing the desulfurization effect.

Description

Technical Field

[0001] The utility model relates to the technical field of fixed bed desulfurization, in particular to a fixed bed desulfurization tower with integrated dust removal function. Background Art

[0002] Fixed bed desulfurization technology is a dry desulfurization technology that is expanded and improved on the basis of activated carbon / coke desulfurization process. Therefore, the fixed bed design also has two types: cross-flow and counter-flow, which are often called vertical and horizontal in the industry.

[0003] The key point of fixed-bed desulfurization technology is the desulfurizer. Its main active ingredient is a calcium-based desulfurizer (CaO, Ca(OH)2). At the same time, corresponding hardeners, pore-forming agents, activators and other substances are added. It is made by extrusion molding and then drying. By evenly filling the desulfurizer in the filler, the flue gas is dispersed through the filler and fully reacts with the desulfurizer, thereby achieving the purpose of desulfurization.

[0004] However, the flue gas contains a large amount of particulate matter, which will cause blockage of the filler when in direct contact with the filler, affecting the desulfurization efficiency. In addition, the filler of some vertical fixed-bed desulfurization towers is located at the top of the tower. The flue gas can only contact the filler and react with the desulfurizer therein if it flows upward. However, the upward flow speed of the flue gas inside the desulfurization tower is slow and not stable enough, resulting in uneven desulfurization speed. Therefore, a fixed-bed desulfurization tower with integrated dust removal function is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a fixed bed desulfurization tower with integrated dust removal function, aiming to improve the problems in the prior art where direct contact between flue gas and filler causes filler blockage, and the uneven upward flow speed of flue gas affects the desulfurization efficiency.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a fixed-bed desulfurization tower with integrated dust removal function, comprising a fixed-bed desulfurization tower body, the bottom end of the fixed-bed desulfurization tower body is fixedly connected to a support, the left and right ends of the inner side of the fixed-bed desulfurization tower body are fixedly connected to filter plates, the top of the fixed-bed desulfurization tower body is provided with a scraping assembly, the scraping assembly is used to scrape impurities on the two filter plates, the interior of the fixed-bed desulfurization tower body is fixedly connected to baffles at the top of the opposite end of the filter plate, the bottom of the opposite end of the two baffles is fixedly connected to a packing layer 2, the opposite end of the filter plate is fixedly connected to a packing layer 1 at the bottom end of the baffle, the top of the two packing layers 1 are in contact with the bottom end of the packing layer 2, and the left and right sides of the fixed-bed desulfurization tower body are fixedly connected to the bottom of the baffle. Two fixed blocks are fixedly connected at both ends, and a smoke inlet pipe is fixedly connected between the upper and lower fixed blocks. Branch pipes are fixedly connected to the upper and lower parts of the opposite end of the smoke inlet pipe. A smoke outlet pipe is fixedly connected to the middle of the top of the fixed bed desulfurization tower body, and a one-way valve is fixedly connected to the outer side of the smoke outlet pipe and the outer sides of the four branch pipes. A support plate is fixedly connected to the rear part of the bottom end of the fixed bed desulfurization tower body, and an induced draft component is provided on the top of the support plate. The front end of the induced draft component passes through the rear part of the fixed bed desulfurization tower body and is located at the inner bottom end of the fixed bed desulfurization tower body. Slots are provided on the left and right sides of the bottom end of the fixed bed desulfurization tower body, and clamping components are provided on the left and right sides of the bottom end of the fixed bed desulfurization tower body. The two clamping components are used to block the slots on the same side.

[0007] As a further description of the above technical solution: the scraping assembly includes four fixed plates, the bottom ends of the four fixed plates are fixedly connected to the top of the fixed bed desulfurization tower body, and a connecting shaft is rotatably connected between the front and rear fixed plates. The outer sides of the two connecting shafts are fixedly connected to two reels, and ropes are wrapped around the outer sides of the reels. The ends of the ropes are fixedly connected to pressure blocks, and the bottom ends of the connecting shafts are provided with scrapers. The tops of the scrapers are fixedly connected to the bottom ends of the two pressure blocks on the same side. The front end of the left front fixed plate is fixedly connected to a motor, and the output end of the motor is fixedly connected to the front end of the left connecting shaft. The outer side of the connecting shaft is fixedly connected to a pulley at the front end of the rear fixed plate, and the two pulleys are connected by a belt.

[0008] As a further description of the above technical solution: the pressure block and the scraper are both located inside the fixed bed desulfurization tower body, and the opposite sides of the scraper are respectively in contact with the side away from the filter plate.

[0009] As a further description of the above technical solution: the front and rear sides of the scraper are both in contact with the inner side of the fixed bed desulfurization tower body.

[0010] As a further description of the above technical solution: the induced draft assembly includes an induced draft fan, the bottom end of the induced draft fan is fixedly connected to the top rear end of the support plate, the output end of the induced draft fan is fixedly connected to an induced draft duct, and the outer top of the induced draft duct is fixedly connected to several air nozzles.

[0011] As a further description of the above technical solution: the induced draft fan is located at the rear side of the fixed bed desulfurization tower body, the front end of the induced draft pipe is fixedly connected to the inner front end of the fixed bed desulfurization tower body, and the air nozzles are all located inside the fixed bed desulfurization tower body.

[0012] As a further description of the above technical solution: the two engaging assemblies are symmetrical, and the engaging assemblies each include a connecting plate, the top of the connecting plate is fitted with the bottom of the fixed bed desulfurization tower body, the top of the connecting plate is fixedly connected with a clamping block, and the clamping blocks are respectively engaged with the slots on the same side, and bolts are provided at the four corners of the connecting plate, and the outer sides of the top ends of the four bolts are threadedly connected to the fixed bed desulfurization tower body.

[0013] As a further description of the above technical solution: the opposite ends of the branch pipes extend into the interior of the fixed bed desulfurization tower body, and the opposite ends of the branch pipes are located at the ends away from the filter plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present invention, the flue gas enters the interior of the fixed-bed desulfurization tower body from the smoke inlet pipe and the branch pipe. The branch pipe disperses the position where the flue gas enters, so that the flue gas can quickly react with the filler inside the first packing layer in contact, thereby accelerating the desulfurization speed. By starting the induced draft fan, the air nozzle introduces air into the interior of the fixed-bed desulfurization tower body, and the speed of the air flow is controlled, so that the flue gas entering between the two first packing layers moves upward at a uniform speed, so that it reacts again with the desulfurizer filled in the second packing layer, further reducing the sulfide content in the flue gas and improving the desulfurization efficiency.

[0016] 2. In the utility model, by setting two filter plates, the flue gas entering the fixed bed desulfurization tower body first contacts the filter plates, so that the filter plates intercept impurities such as particulate matter in the flue gas, and prevent the impurities from entering the packing layer 1 and causing blockage of the packing layer 1, thereby affecting the desulfurization efficiency. By removing the card block from the card slot, starting the motor, and driving the four reels to synchronously unwind the rope, the scrapers on both sides move downward, scraping off the particulate matter intercepted on the filter plate on the same side, and dropping them through the card slot to the outside of the fixed bed desulfurization tower body, without affecting the effect of the next flue gas desulfurization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front cross-sectional view of the fixed bed desulfurization tower body of the fixed bed desulfurization tower with integrated dust removal function proposed in the present invention;

[0018] Figure 2 This is a rear view of the fixed bed desulfurization tower body of the fixed bed desulfurization tower with integrated dust removal function proposed in the utility model;

[0019] Figure 3 This is a disassembled diagram of the connecting plate and bolts of the fixed-bed desulfurization tower with integrated dust removal function proposed in the utility model;

[0020] Figure 4 This is a right view of the induced draft component of the fixed-bed desulfurization tower with integrated dust removal function proposed in the present invention;

[0021] Figure 5 This is the right front view of the scraping assembly of the fixed bed desulfurization tower with integrated dust removal function proposed by the utility model.

[0022] Legend:

[0023] 1. Fixed-bed desulfurization tower body; 2. Fixed block; 3. Smoke inlet pipe; 4. Branch pipe; 5. Smoke outlet pipe; 6. One-way valve; 7. Filter plate; 8. Baffle; 9. Packing layer one; 10. Packing layer two; 11. Slot; 12. Support; 13. Connecting plate; 14. Block; 15. Bolt; 16. Support plate; 17. Induced draft fan; 18. Induced draft duct; 19. Air nozzle; 20. Fixed plate; 21. Connecting shaft; 22. Reel; 23. Rope; 24. Scraper; 25. Pressure block; 26. Pulley; 27. Belt; 28. Motor. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1 and Figure 2, the utility model provides an embodiment: a fixed-bed desulfurization tower with integrated dust removal function, including a fixed-bed desulfurization tower body 1, the bottom end of the fixed-bed desulfurization tower body 1 is fixedly connected to a support 12, the left and right ends of the inner side of the fixed-bed desulfurization tower body 1 are fixedly connected to filter plates 7, the top of the fixed-bed desulfurization tower body 1 is provided with a scraping assembly, the scraping assembly is used to scrape off impurities on the two filter plates 7, the inside of the fixed-bed desulfurization tower body 1 is fixedly connected to the top of the opposite end of the filter plate 7 with a baffle 8, the bottom of the opposite end of the two baffles 8 is fixedly connected to a packing layer 2 10, the opposite end of the filter plate 7 is fixedly connected to a packing layer 1 9 at the bottom end of the baffle 8, the top of the two packing layers 1 9 are in contact with the bottom end of the packing layer 2 10, and the left and right ends of the fixed-bed desulfurization tower body 1 are fixed There are two fixed blocks 2 fixedly connected, and a smoke inlet pipe 3 is fixedly connected between the upper and lower fixed blocks 2. The upper and lower parts of the opposite ends of the smoke inlet pipe 3 are fixedly connected with branch pipes 4. A smoke outlet pipe 5 is fixedly connected to the middle of the top of the fixed bed desulfurization tower body 1, and the outer side of the smoke outlet pipe 5 and the outer side of the four branch pipes 4 are fixedly connected with a one-way valve 6. A support plate 16 is fixedly connected to the rear part of the bottom end of the fixed bed desulfurization tower body 1, and an induced draft component is provided on the top of the support plate 16. The front end of the induced draft component passes through the rear part of the fixed bed desulfurization tower body 1 and is located at the inner bottom end of the fixed bed desulfurization tower body 1. Slots 11 are provided on the left and right sides of the bottom end of the fixed bed desulfurization tower body 1, and snap-fit ​​components are provided on the left and right sides of the bottom end of the fixed bed desulfurization tower body 1. The two snap-fit ​​components are used to block the slots 11 on the same side.

[0026] The flue gas enters the interior of the fixed bed desulfurization tower body 1 from the smoke inlet pipe 3 and the branch pipe 4. The branch pipe 4 disperses the position where the flue gas enters, so that the flue gas can quickly react with the filler inside the contacted filler layer 9, thereby accelerating the desulfurization speed. The induced draft component allows the flue gas entering between the two filler layers 9 to move upward quickly, so that it reacts again with the desulfurizer filled in the filler layer 2 10, further reducing the sulfide content in the flue gas. In addition, the desulfurizer can adsorb and react with NOX, thereby achieving the ability to reduce a small amount of nitrogen oxides. Before the flue gas reacts with the desulfurizer filled in the filler layer 9, the filter plate 7 can intercept impurities such as particles in the flue gas. After the flue gas purification is completed, the filter plate 7 can be cleaned by the cooperation of the snap-fit ​​assembly and the scraper assembly to prevent the filter plate 7 from being blocked and affecting the flue gas passage effect.

[0027] Reference Figure 1 、 Figure 2 and Figure 5The scraping assembly includes four fixed plates 20, the bottom ends of the four fixed plates 20 are fixedly connected to the top of the fixed bed desulfurization tower body 1, and a connecting shaft 21 is rotatably connected between the front and rear fixed plates 20. The outer sides of the two connecting shafts 21 are fixedly connected to two reels 22, and the outer sides of the reels 22 are wound with ropes 23. The ends of the ropes 23 are fixedly connected to pressure blocks 25. The bottom ends of the connecting shafts 21 are provided with scrapers 24, and the tops of the scrapers 24 are fixedly connected to the bottom ends of the two pressure blocks 25 on the same side. The front end of the left front fixed plate 20 is fixedly connected to a motor 28, and the output end of the motor 28 is fixedly connected to the front end of the left connecting shaft 21. The outer side of the connecting shaft 21 is fixedly connected to the front end of the rear fixed plate 20 with a pulley 26. The two pulleys 26 are connected by a belt 27. The pressure block 25 and the scraper 24 are both located inside the fixed bed desulfurization tower body 1. The opposite side of the scraper 24 is respectively in contact with the side away from the filter plate 7, and the front and rear sides of the scraper 24 are both in contact with the inner side of the fixed bed desulfurization tower body 1.

[0028] The starting motor 28 drives the left connecting shaft 21 and the left pulley 26 to rotate, and the right pulley 26 drives the right connecting shaft 21 to rotate synchronously through the belt 27, so that the reel 22 fixed on the two connecting shafts 21 rotates synchronously, and the reel 22 simultaneously unwinds or rewinds the rope 23 wound on the reel 22. When unwinding, the pressure of the pressure block 25 causes the scraper 24 to move downward, scraping the particulate matter on the filter plate 7 downward. When rewinding, under the tension of the rope 23, the scraper 24 moves upward, so that the scraper 24 is located at the inner top of the fixed bed desulfurization tower body 1, without blocking the entry of flue gas.

[0029] Reference Figure 1 、 Figure 2 and Figure 4 The induced draft component includes an induced draft fan 17, the bottom end of the induced draft fan 17 is fixedly connected to the top rear end of the support plate 16, the output end of the induced draft fan 17 is fixedly connected to an induced draft pipe 18, and a plurality of air nozzles 19 are fixedly connected to the outer top of the induced draft pipe 18. The induced draft fan 17 is located at the rear side of the fixed bed desulfurization tower body 1, and the front end of the induced draft pipe 18 is fixedly connected to the inner front end of the fixed bed desulfurization tower body 1. The air nozzles 19 are all located inside the fixed bed desulfurization tower body 1.

[0030] The input end of the induced draft fan 17 is connected to the blast furnace hot blast stove system. When the induced draft fan 17 is started, hot air is introduced from the blast furnace hot blast stove system into the interior of the induced draft pipe 18 and enters the interior of the fixed bed desulfurization tower body 1 through the air nozzle 19, so that the hot air fills the fixed bed desulfurization tower body 1 and blows the flue gas upward to accelerate the flow of the flue gas.

[0031] Reference Figure 1 and Figure 3The two engaging components are symmetrical, and the engaging components both include connecting plates 13. The tops of the connecting plates 13 are fitted with the bottom of the fixed bed desulfurization tower body 1. The tops of the connecting plates 13 are fixedly connected with card blocks 14, and the card blocks 14 are respectively engaged with the card slots 11 on the same side. Bolts 15 are provided at the four corners of the connecting plates 13, and the outer sides of the tops of the four bolts 15 are threadedly connected to the fixed bed desulfurization tower body 1. The opposite ends of the branch pipes 4 extend into the interior of the fixed bed desulfurization tower body 1, and the opposite ends of the branch pipes 4 are located at the opposite end of the filter plate 7.

[0032] Align the block 14 with the adjacent slot 11 and move it upward so that the block 14 engages with the slot 11, and then use bolts 15 to fix the connecting plate 13 to the bottom of the fixed bed desulfurization tower body 1 to prevent the gas from flowing out of the slot 11. By removing the bolts 15, the block 14 can be removed from the slot 11.

[0033] Working principle: First, the flue gas enters the flue gas inlet pipe 3 and enters the fixed bed desulfurization tower body 1 through the branch pipe 4 connected thereto. The dust in the flue gas is filtered by the filter plate 7 on the same side, and is blocked in the space formed by the filter plate 7 and the fixed bed desulfurization tower body 1. The flue gas passes through the filter plate 7 and is dispersed inside the packing layer 9 on the same side, and reacts with the desulfurizer filled in the packing layer 9 on the same side, so that the desulfurizer adsorbs the sulfide in the flue gas. Then the flue gas enters between the two packing layers 9 from both sides and is evenly dispersed. The induced draft fan 17 is started to introduce hot air from the blast furnace hot blast stove system into the fixed bed desulfurization tower body 1. The hot air fills the fixed bed desulfurization tower body 1, and blows the flue gas upward through the air nozzle 19, so that the flue gas reacts with the desulfurizer filled in the second packing layer 10 to carry out the second desulfurization. The desulfurized flue gas is discharged through the smoke outlet pipe 5. After the desulfurization is completed, remove the bolt 15, move the block 14 from the inside of the same side slot 11, and start the motor 28 to make the four reels 22 synchronously unwind the rope 23. Under the action of the pressure block 25, the scrapers 24 on both sides move downward synchronously to scrape off the particulate matter blocked on the filter plate 7 on the same side and fall to the outside of the fixed bed desulfurization tower body 1 through the slot 11.

[0034] 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 replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fixed bed desulfurization tower with integrated dust removal function, comprising a fixed bed desulfurization tower body (1), characterized in that: The bottom end of the fixed bed desulfurization tower body (1) is fixedly connected to a support (12), the left and right ends of the inner side of the fixed bed desulfurization tower body (1) are fixedly connected to filter plates (7), the top of the fixed bed desulfurization tower body (1) is provided with a scraping assembly, and the scraping assembly is used to scrape impurities on the two filter plates (7), the inside of the fixed bed desulfurization tower body (1) is fixedly connected to the top of the opposite end of the filter plate (7), the bottom of the opposite end of the two baffles (8) is fixedly connected to the packing layer 2 (10), the opposite end of the filter plate (7) is fixedly connected to the packing layer 1 (9), the top of the two packing layers 1 (9) are in contact with the bottom of the packing layer 2 (10), the left and right ends of the fixed bed desulfurization tower body (1) are fixedly connected to two fixed blocks (2), the upper and lower fixed blocks ( 2) are fixedly connected with a smoke inlet pipe (3), the upper and lower parts of the opposite ends of the smoke inlet pipe (3) are fixedly connected with branch pipes (4), the middle part of the top of the fixed bed desulfurization tower body (1) is fixedly connected with a smoke outlet pipe (5), the outer side of the smoke outlet pipe (5) and the outer side of the four branch pipes (4) are fixedly connected with a one-way valve (6), the rear part of the bottom end of the fixed bed desulfurization tower body (1) is fixedly connected with a support plate (16), the top of the support plate (16) is provided with an air induced component, the front end of the air induced component passes through the rear part of the fixed bed desulfurization tower body (1) and is located at the bottom end of the fixed bed desulfurization tower body (1), the left and right sides of the bottom end of the fixed bed desulfurization tower body (1) are provided with a card slot (11), the left and right sides of the bottom end of the fixed bed desulfurization tower body (1) are provided with a card assembly, and the two card assemblies are used to block the card slot (11) on the same side.

2. The fixed-bed desulfurization tower with integrated dust removal function according to claim 1, characterized in that: The scraping assembly includes four fixed plates (20), the bottom ends of the four fixed plates (20) are fixedly connected to the top of the fixed bed desulfurization tower body (1), a connecting shaft (21) is rotatably connected between the front and rear fixed plates (20), the outer sides of the two connecting shafts (21) are fixedly connected to two reels (22), the outer sides of the reels (22) are wound with ropes (23), the ends of the ropes (23) are fixedly connected to pressure blocks (25), the bottom ends of the connecting shafts (21) are provided with scrapers (24), the tops of the scrapers (24) are fixedly connected to the bottom ends of the two pressure blocks (25) on the same side, the front end of the left front fixed plate (20) is fixedly connected to a motor (28), the output end of the motor (28) is fixedly connected to the front end of the left connecting shaft (21), the outer side of the connecting shaft (21) is fixedly connected to a pulley (26) at the front end of the rear fixed plate (20), and the two pulleys (26) are connected through a belt (27).

3. The fixed-bed desulfurization tower with integrated dust removal function according to claim 2, characterized in that: The pressure block (25) and the scraper (24) are both located inside the fixed bed desulfurization tower body (1), and opposite sides of the scraper (24) are respectively in contact with the opposite sides of the filter plate (7).

4. The fixed-bed desulfurization tower with integrated dust removal function according to claim 2, characterized in that: The front and rear sides of the scraper (24) are both in contact with the inner side of the fixed bed desulfurization tower body (1).

5. The fixed-bed desulfurization tower with integrated dust removal function according to claim 1, characterized in that: The induced draft component comprises an induced draft fan (17), the bottom end of the induced draft fan (17) is fixedly connected to the top rear end of the support plate (16), the output end of the induced draft fan (17) is fixedly connected to an induced draft pipe (18), and the outer top of the induced draft pipe (18) is fixedly connected to a plurality of air nozzles (19).

6. The fixed-bed desulfurization tower with integrated dust removal function according to claim 5, characterized in that: The induced draft fan (17) is located at the rear side of the fixed bed desulfurization tower body (1), the front end of the induced draft pipe (18) is fixedly connected to the inner front end of the fixed bed desulfurization tower body (1), and the air nozzles (19) are all located inside the fixed bed desulfurization tower body (1).

7. The fixed-bed desulfurization tower with integrated dust removal function according to claim 1, characterized in that: The two engaging assemblies are symmetrical, and each of the engaging assemblies includes a connecting plate (13), the top of each of the connecting plates (13) is in contact with the bottom of the fixed bed desulfurization tower body (1), and the top of each of the connecting plates (13) is fixedly connected with a clamping block (14), and the clamping block (14) is respectively engaged with the same side clamping groove (11), and bolts (15) are provided at the four corners of the connecting plate (13), and the outer sides of the top ends of the four bolts (15) are threadedly connected to the fixed bed desulfurization tower body (1).

8. The fixed-bed desulfurization tower with integrated dust removal function according to claim 1, characterized in that: The opposite ends of the branch pipes (4) extend into the interior of the fixed bed desulfurization tower body (1), and the opposite ends of the branch pipes (4) are located at the ends away from the filter plate (7).

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