Flue gas treatment integrated device of desulfurizing tower

Abstract

The utility model relates to the technical field of flue gas treatment, and particularly discloses a flue gas treatment integrated device of a desulfurizing tower, which comprises a pre-filtering component, a pre-cooling component and a desulfurizing component, the pre-filtering component is communicated with the pre-cooling component through a first connecting pipe, and the bottoms of the two components are fixedly connected with the same base; the desulfurization assembly comprises a pre-washing tower, the upper side of the right end of the pre-washing tower is communicated with a gas guide pipe, the other end of the gas guide pipe is communicated with a desulfurization tower, the top end of the desulfurization tower is communicated with an exhaust pipe, and a spraying pipe is annularly installed between the inner side wall and the outer side wall above the desulfurization tower. The spraying pipe is provided with a plurality of atomizing nozzles in the desulfurizing tower at equal intervals, one end of the water inlet is communicated with a first water pump, and the water pumping end of the first water pump is connected with a desulfurizing liquid tank; according to the utility model, large-particle impurities in flue gas are removed through pre-filtration, so that the desulfurization quality and the cleaning convenience of the desulfurization tower are improved.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas treatment technology, specifically relating to an integrated flue gas treatment device for a desulfurization tower. Background Technology

[0002] With the acceleration of industrialization, the problem of flue gas emissions from industrial sectors such as coal-fired power plants and chemical plants has become increasingly serious. Flue gas contains large amounts of harmful substances such as sulfur oxides (SOx) and nitrogen oxides (NOx), which not only threaten human health but also cause severe air pollution. To meet environmental protection requirements, effective flue gas purification has become crucial. Desulfurization towers, as important flue gas treatment equipment, play a key role in the flue gas purification process.

[0003] However, existing desulfurization towers still have some problems in practical applications, which limit their purification effect.

[0004] First, there is the impact of dust particles and impurities: the flue gas discharged into the desulfurization tower contains a lot of particulate dust and impurities. These impurities reduce the efficiency of the desulfurization reaction, resulting in poor purification effect. They may also cause blockage inside the desulfurization tower, increasing the difficulty of maintenance and cleaning.

[0005] Secondly, the flue gas entering the desulfurization tower is generally at a high temperature. Under high-temperature conditions, the activity of the desulfurizing agent is inhibited, affecting the complete removal of sulfides from the flue gas. In addition, high temperatures may also increase the consumption of desulfurizing agent, increasing operating costs. Utility Model Content

[0006] The purpose of this invention is to provide an integrated flue gas treatment device for a desulfurization tower to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An integrated flue gas treatment device for a desulfurization tower includes: a pre-filtration component, a pre-cooling component, and a desulfurization component. The pre-filtration component and the pre-cooling component are connected by a first connecting pipe, and the bottom of the two components are fixed to the same base. The pre-cooling component and the desulfurization component are connected by a second connecting pipe. The desulfurization component includes a pre-washing tower. A gas guide pipe is connected to the upper right side of the pre-washing tower, and the other end of the gas guide pipe is connected to the desulfurization tower. An exhaust pipe is connected to the top of the desulfurization tower. A spray pipe is installed in a ring between the inner and outer walls of the upper part. Multiple atomizing nozzles are installed at equal intervals inside the desulfurization tower. One end of the spray pipe is connected to a first water pump, and the pumping end of the first water pump is connected to a desulfurization liquid tank.

[0009] The pre-filtration assembly includes a filter box, with an air inlet pipe fixed to the left end of the filter box, and multiple first filter plates slidably installed inside.

[0010] Preferably, the pre-cooling component includes a cooling box, a water storage tank and a second water pump are fixedly connected to the top surface of the cooling box, a water outlet pipe is installed between the inner and outer walls of the top, and multiple spray nozzles are connected at equal intervals inside the cooling box through the water outlet pipe, and the water inlet end is connected to the discharge pipe of the second water pump, and the suction pipe of the second water pump is connected to the water storage tank.

[0011] Preferably, a drive motor is fixedly connected to the side wall of the filter box, and a cam rod is rotatably mounted inside. One end of the cam rod is fixedly connected to the output shaft of the drive motor, and a first filter plate is provided on both sides. There are two first filter plates in total. Vibration springs are fixedly connected to the four corners of their opposite outer side walls. The other ends of the multiple vibration springs are fixedly connected to the inner wall of the filter box. A dust removal port is opened at the bottom of the filter box, and a dust hopper is connected and fixedly connected through the dust removal port.

[0012] Preferably, the cooling box has a second filter plate that is equally spaced and engaged at the bottom, and an opening at the bottom that is connected to and fixed to a collection box. The bottom of the collection box is connected to a condensation device.

[0013] Preferably, the condensation device includes a return pipe, the bottom end of which is connected to a collection box, the middle end of which is connected to a cooler, and the top end of which is connected to a third water pump. The cooler is fixed to the side wall of the cooling box, and the suction pipe of the third water pump is connected to a water storage tank.

[0014] Preferably, the bottom of the desulfurization tower is inclined and connected to a guide pipe at the bottom, and the other end of the guide pipe is connected to a centralized treatment box.

[0015] Preferably, the second connecting tube is Z-shaped.

[0016] Preferably, the first connecting pipes are evenly distributed from top to bottom on the filter box.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) The flue gas is pre-filtered through the first filter plate, which adsorbs larger coal ash and other particulate impurities into the filter device, so that the flue gas entering the desulfurization tower can fully react with the desulfurization liquid, improve the desulfurization quality, prevent particulate matter from clogging the inside of the desulfurization tower, and reduce particulate matter, which reduces the accumulation of deposits inside the desulfurization tower and makes it easier to clean.

[0019] (2) The flue gas is pre-cooled by the spray cooling system, which makes it easier to cool the flue gas to a suitable temperature and helps the flue gas to be better absorbed by the desulfurizing agent after entering the desulfurization tower. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present utility model;

[0021] Figure 2 This is a front elevation sectional view of the present invention;

[0022] Figure 3 This is the rear elevation view of the present utility model;

[0023] Figure 4 This is a side cross-sectional view of the desulfurization assembly of this utility model;

[0024] Figure 5 This is a side sectional view of the cooling component of this utility model;

[0025] In the diagram: 1. Pre-filtration assembly; 11. Filter box; 12. Air inlet pipe; 13. First filter plate; 14. Vibration spring; 15. Cam rod; 16. Drive motor; 17. Ash hopper; 2. Pre-cooling assembly; 21. Cooling box; 22. Water outlet pipe; 23. Spray nozzle; 24. Second water pump; 25. Water storage tank; 26. Second filter plate; 27. Collection box; 3. Desulfurization assembly; 31. Pre-washing tower; 32. Air guide pipe; 33. Desulfurization tower; 34. Spray pipe; 35. Atomizing nozzle; 36. First water pump; 37. Desulfurization liquid tank; 38. Exhaust pipe; 4. First connecting pipe; 5. Base; 6. Second connecting pipe; 7. Condensation device; 71. Return pipe; 72. Cooler; 73. Third water pump; 8. Guide pipe; 9. Centralized treatment box. Detailed Implementation

[0026] 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.

[0027] Example 1:

[0028] Please see Figures 1-5As shown, an integrated flue gas treatment device for a desulfurization tower includes: a pre-filtration component 1, a pre-cooling component 2, and a desulfurization component 3. The pre-filtration component 1 and the pre-cooling component 2 are connected by a first connecting pipe 4, which is evenly distributed from top to bottom on the filter box 11. Multiple air inlets 2 increase the flow rate of flue gas per unit time, thereby increasing efficiency. The two components are fixed to the same base 5 at their bottoms. The pre-cooling component 2 and the desulfurization component 3 are connected by a second connecting pipe 6, which is Z-shaped. Extending the time the flue gas spends inside the desulfurization assembly 3 further cools the gas, thereby promoting the desulfurization reaction. The desulfurization assembly 3 includes a pre-scrubbing tower 31. Flue gas enters the pre-scrubbing tower 31 and comes into contact with a saturated ammonium sulfate solution. Due to the evaporation of water in the saturated ammonium sulfate solution, ammonium sulfate crystals precipitate. A gas guide pipe 32 is connected to the upper right side of the pre-scrubbing tower 31, and the other end of the gas guide pipe 32 is connected to the desulfurization tower 33. An exhaust pipe 38 is connected to the top of the desulfurization tower 33. A spray pipe 34 is annularly installed between the inner and outer walls of the upper part of the tower. The spray pipe 34 consists of a water... The system consists of a horizontally arranged square annular pipe connected to a vertically arranged straight pipe. Multiple atomizing nozzles 35 are evenly spaced inside the desulfurization tower 33, forming a relatively uniform spray area. This allows the desulfurizing agent to fully contact the upward-flowing flue gas. As the flue gas rises, it encounters the desulfurizing agent sprayed from various directions, significantly increasing the contact area and thus improving the efficiency of the desulfurization reaction. This results in more complete desulfurization. Furthermore, the inlet... The first water pump 36 is connected to the end of the desulfurization tower 33. The pumping end of the first water pump 36 is connected to the desulfurization liquid tank 37. The bottom of the desulfurization tower 33 is inclined and connected to the bottom of the guide pipe 8. The other end of the guide pipe 8 is connected to the centralized treatment tank 9. The inclined design allows the waste liquid generated after reacting with the desulfurizing agent to be discharged into the centralized treatment tank 9 in a timely manner through the guide pipe 8, reducing the interference of the waste liquid on the flue gas reaction. The centralized treatment tank 9 plays the role of unified treatment of the waste liquid to ensure that harmful substances are effectively removed and reduce the risk of environmental pollution.

[0029] The pre-filtration assembly 1 includes a filter box 11. An air inlet pipe is fixedly connected to the left end of the filter box 11. Multiple first filter plates 12 are slidably installed inside. A drive motor 16 is fixedly connected to the side wall of the filter box 11. A cam rod 15 is rotatably assembled inside. One end of the cam rod 15 is fixedly connected to the output shaft of the drive motor 16, and both sides are provided with first filter plates 13. The material of the first filter plates 13 can be stainless steel, which has the advantages of good corrosion resistance, wear resistance, smooth surface, easy cleaning, and easy dust removal during vibration. There are two first filter plates 13. Vibration springs 14 are fixedly connected to the four corners of their opposite outer side walls. The other ends of multiple vibration springs 14 are fixedly connected to the inner wall of the filter box 11. A dust removal port is opened at the bottom of the filter box 11, and a dust hopper 17 is connected and fixedly connected through the dust removal port. The dust hopper 17 is a truncated quadrangular shape, which facilitates the collection and recycling of dust.

[0030] As can be seen from the above, during the installation process, flue gas is first discharged into the filter box 11 through the air inlet pipe 12. The flue gas passes through multiple first filter plates 13 to initially filter out larger particulate impurities. At the same time, after the entire device completes desulfurization, the drive motor 16 can be started to drive the cam rod 15 to rotate, vibrating the first filter plates 13 on both sides. The vibration spring 14 increases the vibration amplitude of the first filter plates 13, shaking off the generated dust, which is then discharged uniformly through the ash hopper 17. The flue gas after preliminary filtration is then cooled by the pre-cooling component 2 before being discharged into the ash hopper 17. The flue gas enters the pre-washing tower 31 and comes into contact with a saturated ammonium sulfate solution. Due to the evaporation of water in the saturated ammonium sulfate solution, ammonium sulfate crystals precipitate out. Then, it enters the desulfurization tower 33 through the gas guide pipe 32. The cooled flue gas enters the desulfurization tower 33, where ammonia and water mix to form ammonia liquid. SO2 in the flue gas is absorbed here and reacts with ammonia to form ammonium sulfate. The desulfurized flue gas is discharged through the exhaust pipe 38, and the generated waste liquid flows into the centralized treatment tank 9, where the waste liquid can be further processed. The ammonium sulfate solution is then sent back to the pre-washing tower 31 for recycling.

[0031] Example 2:

[0032] refer to Figure 2 , Figure 3 and Figure 5 As shown, the pre-cooling component 2 includes a cooling box 21. A water storage tank 25 and a second water pump 24 are fixedly connected to the top surface of the cooling box 21. A water outlet pipe 22 is installed between the inner and outer walls of the top. Multiple spray nozzles 23 are connected to the water outlet pipe 22 at equal intervals inside the cooling box 21, and the water inlet end is connected to the discharge pipe of the second water pump 24. The water outlet pipe 22 is composed of a horizontally arranged pipe network and a vertically arranged straight pipe. The horizontally arranged pipe network fills the interior of the cooling box 21, allowing the spray range of the spray nozzles 23 to cover the entire cooling box 21, so that the flue gas can be fully cooled. The suction pipe of the second water pump 24 is connected to the water storage tank 25. The lower part of the cooling box 21 is fitted with a second filter plate 26 at equal intervals. The bottom is provided with an opening, and a collection box 27 is connected and fixed through the opening. The bottom of the collection box 27 is connected to a condensing device 7. The condensing device 7 includes a return pipe 71. The bottom end of the return pipe 71 is connected to the collection box 27, and the middle part is connected to a cooler 72. The part of the return pipe 71 in the cooler 72 is spiral-shaped, which prolongs the time of the return liquid in the cooler 72, ensuring that the liquid is fully cooled before returning to the water storage tank 25. A third water pump 73 is connected to the top. The cooler 72 is fixed to the side wall of the cooling box 21, and the suction pipe of the third water pump 73 is connected to the water storage tank 25.

[0033] As can be seen from the above, the flue gas, after being pre-filtered by the pre-filter component 1, enters the cooling box 21. The second water pump 24 is started to spray water mist to cool the flue gas and at the same time to reduce dust in the flue gas that is not fully filtered. The cooled flue gas is discharged into the desulfurization component 3 through the second connecting pipe 6. The dust generated during the cooling process inside the cooling box 21 will be adsorbed on the second filter plate 26. After being filtered by the second filter plate 26, the sprayed water is collected in the collection box 27. The third water pump 73 then pumps out and recovers the filtered water. After being cooled by the cooler 72, the water flows back into the water storage tank 25 and is sprayed out again to cool the flue gas, realizing the secondary recycling of wastewater and saving water resources.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated flue gas treatment device for a desulfurization tower, comprising a pre-filtration component (1), a pre-cooling component (2), and a desulfurization component (3), wherein the pre-filtration component (1) and the pre-cooling component (2) are connected by a first connecting pipe (4), and the bottoms of the two components are fixedly connected to the same base (5), and the pre-cooling component (2) and the desulfurization component (3) are connected by a second connecting pipe (6), characterized in that: The desulfurization assembly (3) includes a pre-washing tower (31), with a gas guide pipe (32) connected to the upper right side of the pre-washing tower (31), and a desulfurization tower (33) connected to the other end of the gas guide pipe (32). An exhaust pipe (38) is connected to the top of the desulfurization tower (33), and a spray pipe (34) is installed in a ring between the inner and outer walls above. Multiple atomizing nozzles (35) are installed at equal intervals inside the desulfurization tower (33) of the spray pipe (34), and a first water pump (36) is connected to one end of the water inlet. The pumping end of the first water pump (36) is connected to a desulfurization liquid tank (37). The pre-filter assembly (1) includes a filter box (11), with an air inlet pipe fixed to the left end of the filter box (11), and multiple first filter plates (13) slidably installed inside.

2. The integrated flue gas treatment device for a desulfurization tower according to claim 1, characterized in that: The pre-cooling component (2) includes a cooling box (21). A water storage tank (25) and a second water pump (24) are fixedly connected to the top surface of the cooling box (21). A water outlet pipe (22) is installed between the inner and outer walls of the top. The water outlet pipe (22) is connected to multiple spray nozzles (23) at equal intervals inside the cooling box (21). The water inlet end is connected to the discharge pipe of the second water pump (24). The suction pipe of the second water pump (24) is connected to the water storage tank (25).

3. The integrated flue gas treatment device for a desulfurization tower according to claim 1, characterized in that: The filter box (11) has a drive motor (16) fixedly connected to its side wall, and a cam rod (15) is rotatably mounted inside. One end of the cam rod (15) is fixedly connected to the output shaft of the drive motor (16), and a first filter plate (13) is provided on both sides. There are two first filter plates (13), and vibration springs (14) are fixedly connected to the four corners of their opposite outer side walls. The other end of the multiple vibration springs (14) is fixedly connected to the inner wall of the filter box (11). The bottom of the filter box (11) is provided with a dust removal port, and a dust hopper (17) is connected and fixedly connected through the dust removal port.

4. The integrated flue gas treatment device for a desulfurization tower according to claim 2, characterized in that: The cooling box (21) has a second filter plate (26) that is equally spaced inside and below. The bottom has an opening and a collection box (27) is connected and fixed through the opening. The bottom of the collection box (27) is connected to a condensing device (7).

5. The integrated flue gas treatment device for a desulfurization tower according to claim 4, characterized in that: The condensation device (7) includes a return pipe (71), the bottom end of which is connected to a collection box (27), the middle end of which is connected to a cooler (72), and the top end of which is connected to a third water pump (73). The cooler (72) is fixed to the side wall of the cooling box (21), and the suction pipe of the third water pump (73) is connected to a water storage tank (25).

6. The integrated flue gas treatment device for a desulfurization tower according to claim 1, characterized in that: The bottom of the desulfurization tower (33) is inclined and connected to a guide pipe (8) at the bottom. The other end of the guide pipe (8) is connected to a centralized treatment box (9).

7. The integrated flue gas treatment device for a desulfurization tower according to claim 1, characterized in that: The second connecting pipe (6) is Z-shaped.

8. The integrated flue gas treatment device for a desulfurization tower according to claim 1, characterized in that: The first connecting pipe (4) is evenly distributed from top to bottom on the filter box (11).

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