Flue gas desulfurization and dust removal filter

Abstract

The utility model discloses a flue gas desulfurization and dust removal filter, and relates to the technical field of flue gas treatment equipment. The device comprises a shell, a fixing block, a water conveying cavity and a top shell, the water conveying cavity is fixed to the lower portion of the inner wall of the shell, a spiral plate is fixed to the bottom end of the water conveying cavity, the end of an outer ring of the spiral plate is fixed to the inner wall of the shell, an air inlet pipe is fixed to the position, below the water conveying cavity, of the shell in a penetrating mode, and the fixing block is fixed to the position, above the water conveying cavity, of the inner wall of the shell. A top shell is arranged at the top end of the water conveying cavity, a second annular mounting ring is fixed to the bottom end of the top shell, a filtering disc is fixed to the bottom end of the second mounting ring, and the diameter of the filtering disc is equal to the inner diameter of the shell. By arranging the outer shell, the fixing block, the water conveying cavity and the top shell, the problems that the adsorbent replacement period is short, the treatment cost is high in the flue gas treatment process, the flue gas can be discharged only after being filtered after being subjected to adsorption treatment, a plurality of devices are needed to be matched, and the space cost of the devices is high are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas treatment equipment, in particular to a flue gas desulfurization and dust removal filter. Background Art

[0002] During the operation of flue gas desulfurization and denitrification, the flue gas desulfurization and denitrification technology mainly converts sulfur dioxide (SO2) and nitrogen oxides in the flue gas into harmless substances through chemical reactions. The desulfurization process usually uses alkaline desulfurizers (such as sodium hydroxide NaOH) to react with sulfur dioxide (SO2) in the flue gas to form desulfurization end products such as sodium sulfite (Na2SO3) or sodium sulfate (Na2SO4). In the denitrification process, reducing agents (such as ammonia or urea) react with nitrogen oxides to form ammonia and water. However, it still has the following disadvantages in actual use:

[0003] 1. In flue gas treatment, the flue gas is directly transported to the treatment equipment. In the process of large-scale flue gas treatment, nitrogen oxides and sulfur oxides in the flue gas will quickly accumulate in the adsorbent, causing the adsorbent to fail and need to be replaced, resulting in a high cost for flue gas treatment;

[0004] 2. Secondly, after the flue gas absorbs most of the sulfur oxides and nitrogen oxides, some smoke particles will remain in the flue gas when it is discharged directly. The direct discharge will be more polluting and needs to be filtered in another filtering device. It requires the cooperation of multiple devices and the equipment occupies a large area. Utility Model Content

[0005] The utility model aims to provide a flue gas desulfurization and dust removal filter, which solves the problems of short adsorbent replacement cycle and high treatment cost in flue gas treatment by arranging an outer shell, a fixed block, a water delivery chamber and a top shell, and the flue gas needs to be filtered before it can be discharged after adsorption treatment, which requires the cooperation of multiple devices and has a high equipment space cost.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] The utility model discloses a flue gas desulfurization and dust removal filter, comprising a shell, a fixing block, a water delivery cavity and a top shell, wherein the lower part of the inner wall of the shell is fixed with the water delivery cavity, the bottom end of the water delivery cavity is fixed with a spiral plate, and the end of the outer ring of the spiral plate is fixed on the inner wall of the shell, an air inlet pipe is fixed through the shell below the water delivery cavity, a fixing block is fixed on the inner wall of the shell above the water delivery cavity, a top shell is arranged on the top end of the water delivery cavity, an annular mounting ring 2 is fixed on the bottom end of the top shell, a filter disc is fixed on the bottom end of the mounting ring 2, and the diameter of the filter disc is equal to the inner diameter of the shell, when working, the fixing block and the water delivery cavity are fixed therein through the shell, the filter element is movably connected therein through the fixing block, water is delivered to the spiral plate through the water delivery cavity, so that particles, nitrogen oxides and sulfur oxides contained in the flue gas passing through the spiral plate are absorbed, the top end of the shell is closed through the top shell, and the purified flue gas is transferred.

[0008] Furthermore, a sewage pipe is fixedly connected to the bottom end of the shell, and a mounting ring 1 is fixed at the upper edge of the peripheral side of the shell, and the mounting ring 1 and the mounting ring 2 are in contact with each other. When the shell is working, the sewage washed on the spiral plate is discharged into the treatment equipment through the sewage pipe.

[0009] Furthermore, an air delivery hole is vertically opened in the center of the water delivery cavity, the water delivery cavity outside the air delivery hole is hollow, and drainage holes are evenly opened at the bottom of the water delivery cavity. When the water delivery cavity is working, the preliminarily purified flue gas is transported to the top of the water delivery cavity through the air delivery hole, and water is transported to the spiral plate through the drainage hole to keep the spiral plate moist.

[0010] Furthermore, a water inlet pipe is fixedly connected to the peripheral side of the water delivery cavity, the water inlet pipe passes through the shell and extends out of the shell, and the water inlet pipe and the shell are fixed to each other. When the water delivery cavity is working, the purified water is delivered to the water delivery cavity through the water inlet pipe.

[0011] Furthermore, movable holes are evenly opened on the top of the fixed block, and a vent is opened on the fixed block at the bottom of each movable hole. The fixed block is movably connected to the filter element through the movable holes, and the preliminary purified flue gas is transported to the movable holes through the vent holes.

[0012] Furthermore, a filter element is movably arranged in each movable hole, a pulling handle is fixed to the top of each filter element, and the filter element and the pulling handle are both arranged in the movable hole, and the movable hole purifies the smoke passing through the movable hole through the filter element.

[0013] Furthermore, the filter disc is movably connected to the upper inner part of the shell and abuts against the fixed block. The outer side of the top shell is fixedly connected to an inclined exhaust pipe, and the smoke in the top shell is thrown into the exhaust device through the exhaust pipe.

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

[0015] 1. The utility model solves the problems of short adsorbent replacement cycle and high treatment cost in flue gas treatment by providing a shell and a water delivery chamber. The flue gas is delivered to the shell through the air inlet pipe, and the purified water is delivered to the water delivery chamber through the water inlet pipe, and delivered to the spiral plate through the drainage hole at the bottom of the water delivery chamber, so that the spiral plate is kept moist. When the spiral plate is working, the flue gas is blown onto the spiral plate and then spirally delivered. During the spiral delivery process, the flue gas touches the spiral plate, and the particles in the flue gas are adsorbed by the wet spiral plate. The nitrogen oxides and sulfur oxides in the flue gas are adsorbed by water, and the pollutants are taken away by the flow of water. The flue gas adsorption path is long, and there is no need to use adsorbents, thereby reducing the cost of flue gas treatment.

[0016] 2. The utility model solves the problem that smoke needs to be filtered before it can be discharged after adsorption treatment, which requires the cooperation of multiple devices and has a large equipment space cost by providing an outer shell, a water delivery chamber and a top shell. When the smoke enters the outer shell above the water delivery chamber, with the subsequent smoke delivery, the smoke enters the vent hole at the bottom of the fixed block, and enters the movable hole on the fixed block through the vent hole. The smoke is further filtered by the filter element in the movable hole. After the filtration is completed, the smoke is transported to the filter plate, filtered by the filter plate, and then enters the top shell. It is transported to the smoke exhaust device through the exhaust pipe on the top shell. After the smoke is adsorbed, it is directly filtered and discharged in the same device, without the need to set up additional filtering equipment. The equipment space cost is small and it is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural stereogram of a flue gas desulfurization and dust removal filter after being partially cut away;

[0019] Figure 2 is a structural stereogram of the shell;

[0020] Figure 3 It is a partially cutaway structural stereogram of the fixed block;

[0021] Figure 4 It is a partially cutaway structural stereogram of the water delivery cavity;

[0022] Figure 5 The top shell is a three-dimensional structure diagram when viewed from above;

[0023] Figure 6 It is a three-dimensional diagram of the assembly structure of a flue gas desulfurization and dust removal filter.

[0024] Reference numerals:

[0025] 1. Shell; 101. Mounting ring 1; 102. Air inlet pipe; 103. Drain pipe; 2. Fixing block; 201. Movable hole; 202. Air vent; 203. Filter element; 204. Pull handle; 3. Water delivery cavity; 301. Air delivery hole; 302. Drain hole; 303. Water inlet pipe; 304. Spiral plate; 4. Top shell; 401. Mounting ring 2; 402. Filter plate; 403. Exhaust pipe. DETAILED DESCRIPTION

[0026] 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 of 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. Specific embodiment 1

[0028] See also Figure 1 , 2 , 4, 6, the utility model is a flue gas desulfurization dust removal filter, comprising a shell 1, a fixed block 2, a water delivery chamber 3 and a top shell 4, the lower part of the inner wall of the shell 1 is fixed with the water delivery chamber 3, when the shell 1 is working, the water delivery chamber 3 and the fixed block 2 are fixed therein, water is uniformly delivered to the gap between the spiral plates 304 through the water delivery chamber 3, the bottom end of the water delivery chamber 3 is fixed with a spiral plate 304, and the end of the outer ring of the spiral plate 304 is fixed on the inner wall of the shell 1, an air intake pipe 102 is fixed through the shell 1 below the water delivery chamber 3, the end of the air intake pipe 102 away from the shell 1 is connected with the equipment for conveying flue gas, the flue gas is conveyed into the shell 1, and enters the gap between the spiral plates 304, through The flue gas passes through the moistened spiral plate 304, and the particles, nitrogen oxides and sulfur oxides in the flue gas are dissolved into the water and fall to the lower part of the shell 1 along with the water flow on the spiral plate 304. A fixing block 2 is fixed on the inner wall of the shell 1 above the water delivery chamber 3, and the filter element 203 is accommodated therein through the fixing block 2. A top shell 4 is provided at the top of the water delivery chamber 3, and an annular mounting ring 2 401 is fixed at the bottom end of the top shell 4. A filter disc 402 is fixed at the bottom end of the mounting ring 2 401, and the diameter of the filter disc 402 is equal to the inner diameter of the shell 1. The top shell 4 closes the top of the water delivery chamber 3, and further filters the purified flue gas through the filter disc 402 to prevent particles from being discharged through the exhaust pipe 403.

[0029] Specifically, the bottom end of the outer shell 1 is fixedly connected to a drain pipe 103, and the bottom end of the drain pipe 103 is connected to a sewage treatment device. A mounting ring 101 is fixed at the upper edge of the peripheral side of the outer shell 1, and the mounting ring 101 and the mounting ring 2 401 are in contact with each other. When the outer shell 1 is working, the dirt adsorbed on the spiral plate 304 is discharged through the drain pipe 103. After the mounting ring 101 and the mounting ring 2 401 are in contact with each other and the holes on them are aligned, the mounting bolts are passed through and tightened with nuts to complete the installation and fixation between the outer shell 1 and the top shell 4.

[0030] Furthermore, an air delivery hole 301 is vertically opened in the center of the water delivery chamber 3, and the water delivery chamber 3 outside the air delivery hole 301 is hollow. Drain holes 302 are evenly opened at the bottom of the water delivery chamber 3. When the water delivery chamber 3 is working, the smoke entering the spiral plate 304 is transported to the space inside the shell 1 between the fixed block 2 and the water delivery chamber 3 through the air delivery hole 301.

[0031] Furthermore, a water inlet pipe 303 is fixedly connected to the peripheral side of the water delivery chamber 3, and one end of the water inlet pipe 303 away from the water delivery chamber 3 is connected to the output end of the water delivery device, the water inlet pipe 303 passes through the shell 1 and extends out of the shell 1, and the water inlet pipe 303 and the shell 1 are fixed to each other, and the spiral plate 304 is distributed at roughly the same position as the drainage hole 302 at the bottom end of the water delivery chamber 3, and the diameter of the drainage hole 302 is larger than the thickness of the road selection class. When working, purified water is delivered to the water inlet pipe 303, delivered to the water delivery chamber 3 through the water inlet pipe 303, and delivered to the spiral plate 304 through the drainage hole 302 in the water delivery chamber 3 to wet the spiral plate 304.

[0032] The operation process of this embodiment is as follows: when working, the smoke is transported to the shell 1 through the air inlet pipe 102, and at the same time, the purified water is transported to the water delivery chamber 3 through the water inlet pipe 303, and is transported to the spiral plate 304 through the drainage hole 302 at the bottom of the water delivery chamber 3, so that the spiral plate 304 is kept moist, and when the spiral plate 304 is working, the smoke is blown onto the spiral plate 304 and then spirally transported. During the spiral transport process, the smoke touches the spiral plate 304, and the particles in the smoke are adsorbed by the wet spiral plate 304, and the nitrogen oxides and sulfur oxides in the smoke are adsorbed by water, and the pollutants are taken away by the flow of water and discharged through the sewage pipe 103. Finally, the smoke is concentrated below the air delivery hole 301 in the water delivery chamber 3, and rises to the shell 1 between the water delivery chamber 3 and the fixed block 2 through the air delivery hole 301. Specific embodiment 2

[0034] See also Figure 1 , 2, 3, 5, 6, on the basis of the specific embodiment 1, movable holes 201 are evenly opened on the top of the fixed block 2, and a vent 202 is opened on the fixed block 2 at the bottom of each movable hole 201. The fixed block 2 is movably connected to the filter element 203 through the movable hole 201, and the smoke in the housing 1 between the water delivery cavity 3 and the fixed block 2 is transported to the movable hole 201 through the vent 202, and is filtered by the filter element 203 in the movable hole 201.

[0035] Specifically, a filter element 203 is movably arranged in each movable hole 201, a pulling handle 204 is fixed to the top of each filter element 203, and the filter element 203 and the pulling handle 204 are both arranged in the movable hole 201. When the filter element 203 is working, the smoke treated with water is filtered, and the filter element 203 can be pulled out of the movable hole 201 by pulling the pulling handle 204.

[0036] Furthermore, the filter disc 402 is movably connected to the upper inner part of the outer shell 1 and abuts against the fixed block 2. The outer side of the top shell 4 is fixedly connected to an inclined exhaust pipe 403. The end of the exhaust pipe 403 away from the filter disc 402 is connected to a conveying structure for discharging purified flue gas. When the filter disc 402 is working, it is pressed on the fixed block 2 so that the filter element 203 in the fixed block 2 is restricted. After the flue gas is filtered by the filter element 203, it is conveyed to the filter disc 402. After the flue gas is finally filtered by the filter disc 402, the flue gas enters the top shell 4 and is discharged through the exhaust pipe 403 on the top shell 4.

[0037] The operation process of this embodiment is as follows: during operation, after the smoke enters the housing 1 above the water delivery chamber 3, with the subsequent smoke delivery, the smoke enters the vent hole at the bottom of the fixed block 2, and enters the movable hole 201 on the fixed block 2 through the vent hole, and the smoke is further filtered by the filter element 203 in the movable hole 201. After the filtration is completed, the smoke is delivered to the filter disc 402, and after being filtered by the filter disc 402, it enters the top housing 4, and is delivered to the smoke exhaust device through the exhaust pipe 403 on the top housing 4. When more is needed, When replacing the filter element 203, loosen the mounting bolts and nuts installed together on the mounting ring 101 and the mounting ring 2 401, pull out the mounting bolts, move upward to remove the top shell 4, then pull the handle 204 to pull the filter element 203 out of the movable hole 201, put the new filter element 203 into the movable hole 201 on the fixed block 2, reset the top shell 4, realign the holes on the mounting ring 101 and the mounting ring 2 401, and complete the replacement of the filter element 203 after installing the mounting bolts and nuts.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A flue gas desulfurization dust removal filter, comprising a housing (1), a fixing block (2), a water delivery cavity (3) and a top housing (4), characterized in that: A water delivery chamber (3) is fixed to the lower part of the inner wall of the outer shell (1), a spiral plate (304) is fixed to the bottom end of the water delivery chamber (3), and the end of the outer ring of the spiral plate (304) is fixed to the inner wall of the outer shell (1), an air intake pipe (102) is fixed through the outer shell (1) below the water delivery chamber (3), a fixing block (2) is fixed to the inner wall of the outer shell (1) above the water delivery chamber (3), a top shell (4) is provided at the top end of the water delivery chamber (3), a ring-shaped mounting ring (401) is fixed to the bottom end of the top shell (4), a filter disc (402) is fixed to the bottom end of the mounting ring (401), and the diameter of the filter disc (402) is equal to the inner diameter of the outer shell (1).

2. A flue gas desulfurization dust removal filter according to claim 1, characterized in that: The bottom end of the shell (1) is fixedly connected to a sewage discharge pipe (103), and a mounting ring 1 (101) is fixed at the upper edge of the peripheral side of the shell (1), and the mounting ring 1 (101) and the mounting ring 2 (401) are in contact with each other.

3. A flue gas desulfurization dust removal filter according to claim 1, characterized in that: An air delivery hole (301) is vertically provided in the center of the water delivery cavity (3), the water delivery cavity (3) outside the air delivery hole (301) is hollow, and drainage holes (302) are evenly provided at the bottom of the water delivery cavity (3).

4. A flue gas desulfurization dust removal filter according to claim 1, characterized in that: A water inlet pipe (303) is fixedly connected to the peripheral side of the water delivery cavity (3); the water inlet pipe (303) passes through the shell (1) and extends out of the shell (1); and the water inlet pipe (303) and the shell (1) are fixed to each other.

5. The flue gas desulfurization dust removal filter according to claim 1, characterized in that: The top of the fixed block (2) is evenly provided with movable holes (201), and a vent (202) is provided on the fixed block (2) at the bottom of each movable hole (201).

6. A flue gas desulfurization dust removal filter according to claim 5, characterized in that: A filter element (203) is movably arranged in each movable hole (201), a pulling handle (204) is fixed to the top of each filter element (203), and the filter element (203) and the pulling handle (204) are both arranged in the movable hole (201).

7. The flue gas desulfurization dust removal filter according to claim 1, characterized in that: The filter disc (402) is movably connected to the upper inner portion of the outer shell (1) and abuts against the fixing block (2), and the outer side of the top shell (4) is fixedly connected to an inclined exhaust pipe (403).

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