Desulfurizing tower for flue gas desulfurization and denitrification

Abstract

The utility model belongs to the technical field of flue gas desulfurization and denitrification, and particularly relates to a desulfurization tower for flue gas desulfurization and denitrification, which comprises a base, a water washing structure mounted at the top of the base, a filtering structure connected to the right side of the water washing structure, a desorption structure connected to the right side of the filtering structure, a dust removal unit and a water washing unit, a drainage pipe is mounted on the right side of the outer surface of the washing tower close to the bottom end, a sealing bearing is mounted in the middle of the top surface of the washing tower, a spraying pipe is connected in the sealing bearing, spiral blades are mounted in the spraying pipe, and a water injection pipe is arranged at the top of the spraying pipe. According to the desulfurization tower for flue gas desulfurization and denitrification, dust in flue gas is filtered, collected and treated by utilizing a bag-type dust collector, and after the flue gas enters the water washing tower, water flow of a water injection pipe impacts a spiral blade to drive a spraying pipe to perform rotary spraying by utilizing a sealing bearing, so that dust particles in the flue gas are adsorbed and washed to the maximum extent; and dust in the smoke dust is removed.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization and denitrification, in particular to a desulfurization tower for flue gas desulfurization and denitrification. Background Art

[0002] A large amount of waste gas will be generated in the industrial production process. Factories will use waste gas treatment equipment to purify the waste gas to reduce the impact on the environment. The flue gas desulfurization and denitrification method is to denitrify first and then desulfurize, two sets of equipment, two processes, so that the flue gas is denitrified and then desulfurized using a desulfurization tower. The desulfurization tower is one of the waste gas treatment equipment. The desulfurization tower uses the water film desulfurization and dust removal principle to purify the waste gas. Because it is easy to maintain and can achieve dust removal and desulfurization effects by preparing different dust removal agents, the application of desulfurization towers is becoming more and more extensive.

[0003] The climbing equipment on the surface of the existing desulfurization tower is exposed to the outside, and there is a problem that the climbing equipment may rust due to rain, which may cause the climbing equipment to break when the workers are climbing. As a result, the safety of the workers when climbing cannot be guaranteed, which reduces the safety effect of the desulfurization tower and has a certain impact on the use of the desulfurization tower.

[0004] For example, a desulfurization tower for flue gas desulfurization and denitrification disclosed in Chinese patent CN218235026U starts a driving motor to drive shaft 1 to rotate, thereby driving a gear plate to rotate, and then driving an arc plate to slide along an arc groove, thereby driving a movable ladder to move and retract into a protective shell, and at the same time driving a sealing plate to move and insert into the protective shell to seal the opening of the protective shell, so that the movable ladder can be retracted when not in use, thereby preventing the movable ladder from being exposed to rain and rusting, thereby extending the service life of the movable ladder and improving the safety of workers when climbing the ladder.

[0005] However, in the prior art, when desulfurization and denitrification of flue gas is carried out, due to the presence of a large number of dust particles in the flue gas, if the dust particles are not processed before desulfurization and denitrification, it will affect the smoke particles after subsequent desulfurization and denitrification, and the dust particles will be adsorbed on the inner wall of the device, affecting the service life of the device.

[0006] For this reason, we urgently need to provide a desulfurization tower for flue gas desulfurization and denitrification. Utility Model Content

[0007] The purpose of the utility model is to provide a desulfurization tower for flue gas desulfurization and denitrification, so as to solve the problem that when desulfurizing and denitrifying flue gas in the prior art proposed in the above background technology, there are a large number of dust particles in the flue gas. If the dust particles are not processed before desulfurization and denitrification, it will affect the smoke particles after subsequent desulfurization and denitrification, and the dust particles will be adsorbed on the inner wall of the device, affecting the service life of the device.

[0008] To achieve the above objectives, the utility model provides the following technical solutions: a desulfurization tower for flue gas desulfurization and denitrification, comprising a base, a water washing structure is installed on the top of the base, a filtering structure is connected to the right side of the water washing structure, and a desorption structure is connected to the right side of the filtering structure.

[0009] The water washing structure includes a dust removal unit and a water washing unit.

[0010] The water washing unit includes a water washing tower, a drain pipe is installed on the right side of the outer surface of the water washing tower near the bottom, a sealed bearing is installed in the middle of the top surface of the water washing tower, a spray pipe is connected to the inside of the sealed bearing, spiral blades are installed inside the spray pipe, and a water injection pipe is arranged on the top of the spray pipe.

[0011] Preferably, the dust removal unit comprises a bag filter, a fixing plate is connected to the outer surface of the bag filter, and an air inlet pipe is connected to the bottom end of the bag filter.

[0012] Preferably, the right side of the fixing plate is fixedly connected to the middle of the left side of the outer surface of the water washing tower, the end of the air inlet pipe away from the bag filter is connected to the middle of the left side of the outer surface of the water washing tower near the bottom, and the bottom of the water washing tower is fixedly connected to the middle of the top surface of the base. There are two sealing bearings, which are respectively installed in the middle of the spray pipe and the top of the spray pipe, and the bottom of the water injection pipe is connected to the top sealing bearing.

[0013] Preferably, the filtering structure includes a connecting pipe, the bottom end of the connecting pipe is connected to a filter box, the bottom surface of the filter box is fixedly connected to a support plate, a limit plate is fixedly installed inside the filter box, the outer surface of the limit plate is connected to the filter plate, and an air guide pipe is installed in the middle of the right side of the filter box.

[0014] Preferably, the end of the connecting pipe away from the filter box is connected to the middle of the right side of the water washing tower near the top, the outer surface of the filter plate is sealed and slidably connected to the inner wall of the rectangular hole in the middle of the top surface of the filter box, and the left end of the support plate is fixedly connected to the middle of the right side of the outer surface of the water washing tower. The filter plate is a solid frame with multiple layers of filter screens installed inside, and the multiple layers of filter screens are filled with adsorbent fillers such as activated carbon.

[0015] Preferably, the desorption structure includes a desorption box, a support leg is fixedly installed on the bottom surface of the desorption box, a drain pipe is installed on the bottom of the desorption box, atomizing nozzles are installed on the top surface of the desorption box near the front and back, an exhaust pipe is installed in the middle of the top surface of the desorption box near the right end, and a filter plug is installed on the top end of the exhaust pipe.

[0016] Preferably, a circular hole is provided in the middle of the left side of the desorption box, and the inside is fixedly connected to the end of the air guide pipe away from the filter box, and the filter plug is detachably connected to the top of the exhaust pipe. The filter plug is a solid frame, and a filter screen is arranged inside and filled with limestone.

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

[0018] 1. The desulfurization tower for flue gas desulfurization and denitrification uses a bag dust collector to filter and collect dust in the flue gas through the setting of a water washing structure. After the flue gas enters the water washing tower, the water flow of the water injection pipe impacts the spiral blades to drive the spray pipe to rotate and spray using a sealed bearing, thereby maximizing the adsorption and water washing of dust particles in the smoke and removing dust in the smoke.

[0019] 2. The desulfurization tower for flue gas desulfurization and denitrification, through the setting of filtering structure and desorption structure, uses the filter plate to further adsorb and filter the dust particles in the smoke, and then uses multiple atomizing nozzles to atomize and spray the flue gas with oxidant, so as to achieve desulfurization and denitrification of the flue gas, and further desorb the flue gas by using the filter plug when the flue gas is discharged, so that the flue gas purification is more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 It is an enlarged cross-sectional view of the internal structure of the water washing structure of the utility model;

[0023] Figure 4 It is an enlarged view of the internal structure of the filtering structure of the utility model.

[0024] In the figure: 1. base; 101. bag filter; 102. fixing plate; 103. air inlet pipe; 104. water washing tower; 105. drain pipe; 106. sealed bearing; 107. spray pipe; 108. spiral blade; 109. water injection pipe; 201. connecting pipe; 202. support plate; 203. filter box; 204. limit plate; 205. filter plate; 206. air guide pipe; 301. desorption box; 302. support leg; 303. drain pipe; 304. atomizing nozzle; 305. exhaust pipe; 306. filter plug. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0027] Embodiment 1:

[0028] A desulfurization tower for flue gas desulfurization and denitrification comprises a base 1, a water washing structure is installed on the top of the base 1, a filtering structure is connected to the right side of the water washing structure, and a desorption structure is connected to the right side of the filtering structure.

[0029] The water washing structure includes a dust removal unit and a water washing unit. The water washing unit includes a water washing tower 104. A drainage pipe 105 is installed on the right side of the outer surface of the water washing tower 104 near the bottom. A sealed bearing 106 is installed in the middle of the top surface of the water washing tower 104. A spray pipe 107 is connected inside the sealed bearing 106. A spiral blade 108 is installed inside the spray pipe 107. A water injection pipe 109 is provided on the top of the spray pipe 107. The dust removal unit includes a bag dust collector 101. A fixing plate 102 is connected to the outer surface of the bag dust collector 101. An air inlet pipe 103 is connected to the bottom of the bag dust collector 101.

[0030] The right side of the fixing plate 102 is fixedly connected to the middle left side of the outer surface of the water washing tower 104, the end of the air inlet pipe 103 away from the bag dust collector 101 is connected to the middle left side of the outer surface of the water washing tower 104 near the bottom, and the bottom end of the water washing tower 104 is fixedly connected to the middle of the top surface of the base 1.

[0031] The filtering structure includes a connecting pipe 201, the bottom end of the connecting pipe 201 is connected to a filter box 203, the bottom surface of the filter box 203 is fixedly connected to a support plate 202, a limit plate 204 is fixedly installed inside the filter box 203, a filter plate 205 is connected to the outer surface of the limit plate 204, and an air guide pipe 206 is installed in the middle of the right side of the filter box 203. The end of the connecting pipe 201 away from the filter box 203 is connected to the middle of the right side of the water washing tower 104 near the top, the outer surface of the filter plate 205 is sealed and slidably connected to the inner wall of the rectangular hole opened in the middle of the top surface of the filter box 203, and the left end of the support plate 202 is fixedly connected to the middle of the right side of the outer surface of the water washing tower 104.

[0032] Through the setting of the water washing structure, the bag dust collector 101 is used to filter and collect the dust in the flue gas. After the flue gas enters the water washing tower 104, the water flow of the water injection pipe 109 impacts the spiral blades 108 to drive the spray pipe 107 to rotate and spray using the sealed bearing 106, thereby maximizing the adsorption and water washing of dust particles in the smoke and removing dust in the smoke.

[0033] During the smoke dust treatment process, after the smoke enters the bag filter 101, the bag filter 101 is used to filter and collect dust particles in the smoke, and then the smoke enters the water washing tower 104 through the air inlet pipe 103, and water is injected through the water injection pipe 109. The impact force of the water flow is used to impact the spiral blades 108, so that the spiral blades 108 can drive the spray pipe 107 to rotate using the sealed bearing 106, so that the spray pipe 107 can rotate and spray the smoke with water, and the washed sewage is discharged through the drain pipe 105. After that, the smoke enters the filter box 203 through the connecting pipe 201, and then the smoke is further filtered and adsorbed by multiple filter plates 205, which can effectively prevent the dust particles in the smoke from affecting the subsequent desorption.

[0034] Embodiment 2:

[0035] On the basis of the first embodiment, the desorption structure includes a desorption box 301, a support leg 302 is fixedly installed on the bottom surface of the desorption box 301, a drain pipe 303 is installed on the bottom of the desorption box 301, an atomizing nozzle 304 is installed on the top surface of the desorption box 301 near the front and back, an exhaust pipe 305 is installed in the middle of the top surface of the desorption box 301 near the right end, and a filter plug 306 is installed at the top end of the exhaust pipe 305. A circular hole is opened in the middle of the left side of the desorption box 301, and the inside is fixedly connected to the end of the air guide pipe 206 away from the filter box 203, and the filter plug 306 is detachably connected to the top end of the exhaust pipe 305.

[0036] By setting up the filtering structure and the desorption structure, after the dust particles in the smoke are further adsorbed and filtered by the filter plate 205, the flue gas is sprayed with an oxidant by atomization using multiple atomizing nozzles 304, thereby achieving desulfurization and denitrification of the flue gas, and the filter plug 306 is used to further desorb the flue gas when it is discharged, so that the flue gas purification is more thorough.

[0037] After the flue gas is further filtered and adsorbed by the filter box 203 and the filter plate 205, it enters the desorption box 301 through the air duct 206, and the flue gas is sprayed with oxidant using multiple atomizing nozzles 304. The atomizing nozzles 304 can effectively increase the contact area between the oxidant and the flue gas, thereby making the desorption reaction more thorough. At the same time, the oxidant solution after oxidation is discharged through the exhaust pipe 305 for treatment, and the flue gas after desorption is discharged through the exhaust pipe 305. During the discharge process, the limestone filled in the filter plug 306 can be used to further desulfurize the flue gas, making it more thoroughly purified.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A desulfurization tower for flue gas desulfurization and denitrification, comprising a base (1), characterized in that: A water washing structure is installed on the top of the base (1), a filtering structure is connected to the right side of the water washing structure, and a desorption structure is connected to the right side of the filtering structure; The water washing structure includes a dust removal unit and a water washing unit; The water washing unit comprises a water washing tower (104), a drainage pipe (105) is installed on the right side of the outer surface of the water washing tower (104) near the bottom end, a sealing bearing (106) is installed in the middle of the top surface of the water washing tower (104), a spray pipe (107) is connected to the inside of the sealing bearing (106), a spiral blade (108) is installed inside the spray pipe (107), and a water injection pipe (109) is arranged on the top of the spray pipe (107).

2. A desulfurization tower for flue gas desulfurization and denitrification according to claim 1, characterized in that: The dust removal unit comprises a bag dust collector (101), the outer surface of the bag dust collector (101) is connected to a fixing plate (102), and the bottom end of the bag dust collector (101) is connected to an air intake pipe (103).

3. A desulfurization tower for flue gas desulfurization and denitrification according to claim 2, characterized in that: The right side of the fixing plate (102) is fixedly connected to the middle of the left side of the outer surface of the water washing tower (104), the end of the air inlet pipe (103) away from the bag filter (101) is connected to the middle of the left side of the outer surface of the water washing tower (104) near the bottom, and the bottom end of the water washing tower (104) is fixedly connected to the middle of the top surface of the base (1).

4. A desulfurization tower for flue gas desulfurization and denitrification according to claim 1, characterized in that: The filtering structure comprises a connecting pipe (201), the bottom end of the connecting pipe (201) is connected to a filter box (203), the bottom surface of the filter box (203) is fixedly connected to a support plate (202), a limit plate (204) is fixedly installed inside the filter box (203), the outer surface of the limit plate (204) is connected to a filter plate (205), and an air guide pipe (206) is installed in the middle of the right side of the filter box (203).

5. A desulfurization tower for flue gas desulfurization and denitrification according to claim 4, characterized in that: The end of the connecting pipe (201) away from the filter box (203) is connected to the middle of the right side of the water washing tower (104) near the top, the outer surface of the filter plate (205) is sealed and slidably connected to the inner wall of the rectangular hole opened in the middle of the top surface of the filter box (203), and the left end of the support plate (202) is fixedly connected to the middle of the right side of the outer surface of the water washing tower (104).

6. A desulfurization tower for flue gas desulfurization and denitrification according to claim 1, characterized in that: The desorption structure comprises a desorption box (301), a support leg (302) is fixedly mounted on the bottom surface of the desorption box (301), a liquid discharge pipe (303) is mounted on the bottom of the desorption box (301), atomizing nozzles (304) are mounted on the top surface of the desorption box (301) near the front and back sides, an exhaust pipe (305) is mounted on the middle part of the top surface of the desorption box (301) near the right end, and a filter plug (306) is mounted on the top end of the exhaust pipe (305).

7. A desulfurization tower for flue gas desulfurization and denitrification according to claim 6, characterized in that: The desorption box (301) has a circular hole in the middle of the left side, the inside of which is fixedly connected to the end of the air guide pipe (206) away from the filter box (203), and the filter plug (306) is detachably connected to the top end of the exhaust pipe (305).

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