Spraying equipment for waste gas treatment

Abstract

The utility model discloses spraying equipment for waste gas treatment, which comprises a spraying tower, a gas inlet pipe is arranged at the lower end of the spraying tower, a gas outlet is arranged at the upper end of the spraying tower, and support legs are arranged at the bottom of the spraying tower; the first filler frame is arranged in the spray tower, and the first spray assembly is arranged at the upper part of the first filler frame; the water tank is arranged on one side of the spray tower; a water outlet pipe of the water pump is connected with the first spray assembly; the device further comprises a material turning mechanism, the material turning mechanism comprises a motor installed at the bottom of the spray tower, a rotating shaft is connected to an output shaft of the motor, and a plurality of material turning plates are arranged on the rotating shaft. According to the utility model, the material turning mechanism is utilized to dynamically stir the filler in the first filler frame without shutdown, so that dirt attached to the filler is effectively removed; besides, after the filler is stirred, the position of the filler is changed, and the circulation gaps among the filler are rearranged, so that the distribution uniformity of the waste gas in the filler layer is ensured, and the waste gas treatment effect is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of waste gas treatment, especially relate to a spray equipment for waste gas treatment. BACKGROUND

[0002] In the process of industrial waste gas treatment, spray equipment is one of the key technologies widely used. When waste gas passes through the spray tower, it realizes gas-liquid contact and mass transfer process with the help of the filler layer, and then removes harmful substances in the waste gas. The filler layer in the spray tower is composed of porous materials, has a large specific surface area, and can greatly increase the contact area between gas and liquid, so that the pollutants in the waste gas can be more fully contacted with the liquid, providing good conditions for subsequent absorption or chemical reaction, thereby improving the purification efficiency.

[0003] The working principle of the spray tower is briefly described as follows: waste gas enters from the bottom of the spray tower, and then passes through the filler layer. When the waste gas flows upward in the filler layer, it will contact with the liquid film on the surface of the filler, and the harmful substances in the waste gas begin to be adsorbed or dissolved by the liquid film. At the same time, a spraying device is provided at the top of the spray tower, and its core function is to spray liquid downward. These liquids may be clean water or solutions containing specific chemical agents, aiming to more effectively absorb or neutralize harmful substances in the waste gas. After the treatment of the filler layer and the spraying liquid, the concentration of harmful substances in the waste gas is greatly reduced, and the waste gas is discharged through the discharge port at the top of the tower, and the discharge concentration meets the national or local environmental protection standards.

[0004] However, in actual application, the filler layer of the spray tower faces a problem that needs to be solved urgently: the flow gap of the filler layer is gradually filled with dust, sticky impurities and other impurities carried by the waste gas after being used for a period of time, resulting in a decrease in the flow gap or even complete blockage. This situation not only affects the effect and efficiency of waste gas treatment and reduces the purification effect, but also may cause the pressure in the spray tower to rise, thereby threatening the safety of the equipment.

[0005] Specifically, the blockage of the filler layer is mainly due to the adhesion of dust and sticky impurities in the waste gas to the surface of the filler balls. When the accumulation reaches a certain level, the permeability of the filler decreases significantly. At the same time, the blockage of the filler layer may also cause uneven distribution of the spraying liquid, further affecting the contact efficiency of the waste gas and the liquid. In addition, when the pressure in the spray tower rises, the overall structural strength and sealing performance of the equipment will be tested, which may cause safety hazards.

[0006] In order to avoid or alleviate the problem of blockage of the filler layer, the existing treatment method is generally to replace the filler regularly. However, replacing the filler not only has high cost, but also, due to the particularity of the structure of the spray tower equipment, the replacement work of the filler layer usually needs to be carried out during production stoppage, which has a certain impact on the production progress of the enterprise. INVENTION CONTENTS

[0007] The utility model discloses a kind of spray equipment for waste gas treatment, to solve the effect and efficiency of waste gas treatment caused by packing layer blockage, and the problem of equipment safety due to pressure rise, guarantee the efficient, stable and safe operation of waste gas treatment.

[0008] In order to achieve the above object, the utility model adopts the technical scheme that is:

[0009] A kind of spray equipment for waste gas treatment, comprising:

[0010] Spray tower, the lower end of the spray tower is provided with an air inlet pipe, and the upper end is provided with an air outlet; the bottom of the spray tower is provided with a supporting leg;

[0011] The first packing frame is arranged inside the spray tower and is used for containing packing; the lower part of the first packing frame is provided with a plurality of flow-through holes, and the diameter of the flow-through holes is smaller than the diameter of the packing;

[0012] The first spraying assembly is arranged on the upper part of the first packing frame and is used for spraying and treating waste gas;

[0013] The water tank is arranged on one side of the spray tower; the upper part of the water tank is provided with a water pump; the water inlet pipe of the water pump is inserted into the water tank; the water outlet pipe of the water pump is connected with the first spraying assembly.

[0014] Further, the spray tower is provided with a demister on the upper part.

[0015] Further, the first spraying assembly comprises a first annular pipe and a second annular pipe arranged concentrically; the first annular pipe and the second annular pipe are connected by a plurality of connecting pipes; the lower part of the first annular pipe and the second annular pipe is provided with a plurality of spray heads.

[0016] Further, the spray heads on the first annular pipe and the second annular pipe are arranged alternately.

[0017] Further, the spray tower is provided with at least one second packing frame; the rotating shaft is rotatably connected with the second packing frame; the second packing frame is also provided with a material turning plate; the upper part of the second packing frame is provided with a second spraying assembly; the second spraying assembly has the same structure as the first spraying assembly; one side of the second spraying assembly is connected with the water outlet pipe through a water branch pipe.

[0018] Further, the air inlet pipe is tangentially connected with the spray tower.

[0019] Further, the air inlet pipe is tangentially connected with the spray tower.

[0020] Further, the water tank is externally provided with a coil pipe, one end of the coil pipe being connected with the air inlet pipe.

[0021] Further, the spray tower is internally provided with a wall cleaning mechanism, the wall cleaning mechanism comprising a shaft sleeve fixedly installed on a rotating shaft, the shaft sleeve being externally provided with a plurality of connecting arms, one end of each connecting arm being provided with a scraper, the scraper abutting against the inner wall of the spray tower.

[0022] Further, the scraper is of a U-shaped structure, the scraper being obliquely arranged, and the oblique direction of the scraper being the same as the flow direction of the exhaust gas.

[0023] The present application has the following advantages:

[0024] 1) The present application realizes dynamic stirring of the filler in the first filler frame without stopping the machine, effectively removes the dirt adhered to the filler, and changes the position of the filler after being stirred, so that the flow gap between the fillers is rearranged, thereby ensuring the uniformity of the distribution of the exhaust gas in the filler layer and the effect of the exhaust gas treatment.

[0025] 2) The first ring pipe and the second ring pipe of the spray assembly are concentrically arranged, and the spray heads on the first ring pipe and the spray heads on the second ring pipe are staggered, thereby ensuring the coverage range of the spray liquid.

[0026] 3) The second filler frame and the second spray assembly are further arranged in the spray tower, and cooperate with the first filler frame and the first spray assembly, thereby realizing multi-stage spraying of the exhaust gas and ensuring the effect and efficiency of the exhaust gas treatment.

[0027] 4) The air inlet pipe is tangentially connected with the spray tower, the exhaust gas is first subjected to cyclone dust removal at the lower part of the spray tower, and part of the large particle dust is removed, thereby reducing the pressure of the filler adsorption.

[0028] 5) The coil pipe is arranged outside the water tank, and the waste heat of the exhaust gas is used to heat the water tank before the exhaust gas enters the inside of the spray tower, thereby ensuring the efficiency of the dissolution of the reagent in the water tank.

[0029] 6) The wall cleaning mechanism is arranged in the spray tower, the side wall of the spray tower is cleaned, and the accumulation of sludge on the side wall of the spray tower is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0030] ATTACHMENT Figure 1 It is a structure schematic view of a spray equipment for exhaust gas treatment.

[0031] ATTACHMENT Figure 2 It is a structure schematic view of a spray equipment for exhaust gas treatment.

[0032] ATTACHMENT Figure 3 It is a structure schematic view of a spray equipment for exhaust gas treatment.

[0033] Appendix Figure 4 This is a schematic diagram of the structure of a spray device for treating waste gas according to this utility model.

[0034] Appendix Figure 5 This is a schematic diagram of the structure of a spray device for treating waste gas according to this utility model.

[0035] In the diagram, 1. Spray tower; 11. Support leg; 12. Air inlet pipe; 13. Air outlet; 14. First packing frame; 15. Second packing frame; 2. Water tank; 21. Coil; 22. Water pump; 23. Water outlet pipe; 24. Branch water pipe; 25. Flow pipe; 3. First spray assembly; 31. First ring pipe; 32. Second ring pipe; 33. Connecting pipe; 34. Spray head; 4. Material turning mechanism; 41. Motor; 42. Rotating shaft; 43. Material turning plate; 5. Wall cleaning mechanism; 51. Bushing; 52. Connecting arm; 53. Scraper; 6. Demister; 7. Second spray assembly. Detailed Implementation

[0036] The following will be combined with the appendix Figures 1-5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] like Figure 1 , Figure 2 As shown, a spraying device for treating waste gas includes: a spraying tower 1, a first packing frame 14, a first spraying assembly 3, and a water tank 2. The spraying tower 1 has an air inlet pipe 12 at its lower end and an air outlet 13 at its upper end. Support legs 11 are provided at the bottom of the spraying tower 1. Figure 2 As shown, the first packing rack 14 is disposed inside the spray tower 1 and is used to hold the packing material. The lower part of the first packing rack 14 is provided with several flow holes, and the diameter of the flow holes is smaller than the diameter of the packing material. Figure 2 As shown, the first spray assembly 3 is disposed on the upper part of the first packing frame 14 and is used to spray the exhaust gas.

[0039] As Figure 1 shown, the water tank 2 is arranged on one side of the spray tower 1, and a water pump 22 is arranged on the upper portion of the water tank 2, the water inlet pipe of the water pump 22 is inserted into the water tank 2, and the water outlet pipe 23 of the water pump 22 is connected with the first spray assembly 3.

[0040] Further, a material turning mechanism 4 is arranged, as Figure 2 , Figure 4 shown, the material turning mechanism 4 comprises a motor 41 arranged on the bottom of the spray tower 1, and a rotating shaft 42 is connected with the output shaft of the motor 41, the upper end of the rotating shaft 42 is rotatably connected with the first filler frame 14, and a plurality of material turning plates 43 are arranged on the rotating shaft 42, the material turning plates 43 are arranged in the filler frame, and the bottom of the material turning plates 43 abuts against the bottom wall of the filler frame.

[0041] When the filler is blocked during the waste gas treatment, the motor 41 is started, the motor 41 drives the material turning plates 43 to rotate in the first filler frame 14 through the rotating shaft 42, and the filler in the first filler frame 14 is dynamically stirred, so that the sundries attached to the filler collide, extrude and rub each other, and then the sundries on the filler are removed; in addition, the position of the filler is changed after being stirred, and the flow gaps between the fillers are rearranged, which is beneficial to ensure the uniformity of the distribution of the waste gas in the filler layer, so as to ensure the effect of the waste gas treatment; the material turning mechanism 4 can be regularly cleaned according to the situation of the waste gas, or can be continuously operated, so as to ensure the efficiency of the waste gas treatment.

[0042] Further, a demister 6 is arranged on the upper portion of the spray tower 1, which is used for removing the small droplets entrained in the discharged waste gas.

[0043] As Figure 2 shown, the first spray assembly 3 comprises a first annular pipe 31 and a second annular pipe 32 arranged concentrically, and a plurality of connecting pipes 33 are arranged between the first annular pipe 31 and the second annular pipe 32, a plurality of nozzles 34 are arranged on the lower portions of the first annular pipe 31 and the second annular pipe 32, and the nozzles 34 are arranged in a ring shape, which avoids the dead angle of the spray in the spray tower 1, and ensures the effect of the waste gas treatment.

[0044] As Figure 3 shown, the nozzles 34 on the first annular pipe 31 and the nozzles 34 on the second annular pipe 32 are arranged alternately, which further ensures the coverage range of the spray liquid.

[0045] As Figure 2As shown, the spray tower 1 is provided with at least one second packing frame 15, the rotating shaft 42 is rotationally connected with the second packing frame 15, and the second packing frame 15 is also provided with a material turning plate 43, the upper portion of the second packing frame 15 is provided with a second spray assembly 7, the second spray assembly 7 is identical in structure with the first spray assembly 3, and the second spray assembly 7 is connected with the water outlet pipe 23 through the water branch pipe 24 at one side; the multiple sets of packing frames and spray assemblies spray the waste gas in multiple stages, thereby ensuring the efficiency of waste gas treatment.

[0046] As shown in the drawings, Figure 1 As shown, the air inlet pipe 12 is tangentially connected with the spray tower 1, the waste gas enters the inside of the spray tower 1 tangentially, and under the action of centrifugal force, part of the large dust particles are removed first, thereby reducing the pressure of packing adsorption.

[0047] As shown in the drawings, Figure 2 As shown, the water tank 2 is externally provided with a coil pipe 21, one end of the coil pipe 21 is connected with the air inlet pipe 12, and the waste gas heats the water tank 2 by waste heat before entering the inside of the spray tower 1, thereby ensuring the efficiency of the medicine solution in the water tank 2.

[0048] As shown in the drawings, Figure 2 As shown, the spray tower 1 is provided with a wall cleaning mechanism 5, as shown in the drawings, Figure 5 As shown, the wall cleaning mechanism 5 comprises a shaft sleeve 51 fixedly installed on the rotating shaft 42, the shaft sleeve 51 is externally provided with a plurality of connecting arms 52, one end of the connecting arm 52 is provided with a scraper 53, and the scraper 53 abuts against the inner wall of the spray tower 1.

[0049] After the waste gas enters the inside of the spray tower 1 tangentially, the dust is captured by the inner wall of the lower portion of the spray tower 1, after long-term operation, the dust of the lower portion of the spray tower 1 contacts with the spray liquid to form sludge and is accumulated on the inner wall of the spray tower 1, thereby reducing the effective treatment space in the spray tower 1 and affecting the treatment effect of the waste gas; in order to solve this problem, the wall cleaning mechanism 5 is arranged, the rotating shaft 42 drives the scraper 53 to move along the inner wall of the spray tower 1 in a circular motion when the rotating shaft 42 rotates, thereby effectively scraping off the sludge on the inner wall, and the cleanliness and smoothness of the inner wall of the spray tower 1 are maintained.

[0050] As shown in the drawings, Figure 5 As shown, the scraper 53 is in a U-shaped structure, the scraper 53 is arranged in an inclined manner, and the inclined direction of the scraper 53 is identical with the flow direction of the waste gas, thereby reducing the influence on the airflow entering the inside of the spray tower 1 tangentially and ensuring the effect of cyclone dust removal of the waste gas.

[0051] The above content is merely an example and description of the structure of the present application, and those skilled in the art can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as the modifications or supplements or replacements do not deviate from the structure of the present application or exceed the scope defined by the present application, and all of them shall belong to the protection scope of the present application.

Claims

1. A spraying device for waste gas treatment, comprising: a spraying tower (1), the lower end of the spraying tower (1) is provided with an air inlet pipe (12), the upper end is provided with an air outlet (13), the bottom of the spraying tower (1) is provided with a supporting leg (11); a first filler frame (14) arranged in the spraying tower (1) for containing fillers, the lower part of the first filler frame (14) is provided with a plurality of flow-through holes, and the diameter of the flow-through holes is smaller than the diameter of the fillers; a first spraying assembly (3) arranged on the upper part of the first filler frame (14) for spraying treatment of waste gas; a water tank (2) arranged on one side of the spraying tower (1), the upper part of the water tank (2) is provided with a water pump (22), the water inlet pipe of the water pump (22) is inserted into the water tank (2), and the water outlet pipe (23) of the water pump (22) is connected with the first spraying assembly (3); characterized in that it further comprises a material turning mechanism (4), the material turning mechanism (4) comprises a motor (41) mounted on the bottom of the spraying tower (1), a rotating shaft (42) connected with the output shaft of the motor (41), the upper end of the rotating shaft (42) is rotatably connected with the first filler frame (14), a plurality of material turning plates (43) are arranged on the rotating shaft (42), the material turning plates (43) are arranged in the filler frame, and the bottom of the material turning plates (43) abuts against the bottom wall of the filler frame.

2. A spraying apparatus for exhaust gas treatment according to claim 1, wherein The upper part of the spraying tower (1) is provided with a demister (6).

3. The spray device for exhaust gas treatment according to claim 1, wherein The first spraying assembly (3) comprises a first annular pipe (31) and a second annular pipe (32) arranged concentrically, the first annular pipe (31) and the second annular pipe (32) are connected through a plurality of connecting pipes (33), and the lower part of the first annular pipe (31) and the second annular pipe (32) is provided with a plurality of nozzles (34).

4. A spraying apparatus for exhaust gas treatment according to claim 3, wherein The nozzles (34) on the first annular pipe (31) and the nozzles (34) on the second annular pipe (32) are arranged alternately.

5. The spray device for exhaust gas treatment according to claim 1, wherein At least one second filler frame (15) is arranged in the spraying tower (1), the rotating shaft (42) is rotatably connected with the second filler frame (15), the second filler frame (15) is also provided with material turning plates (43), the upper part of the second filler frame (15) is provided with a second spraying assembly (7), the second spraying assembly (7) has the same structure as the first spraying assembly (3), and the second spraying assembly (7) is connected with the water outlet pipe (23) through a water branch pipe (24) on one side.

6. The spray device for exhaust gas treatment according to claim 1, wherein The air inlet pipe (12) is tangentially connected with the spraying tower (1).

7. A spraying apparatus for exhaust gas treatment according to claim 6, wherein The water tank (2) is externally provided with a coil pipe (21), one end of the coil pipe (21) is connected with the air inlet pipe (12).

8. A spraying device for exhaust gas treatment according to any one of claims 1-7, characterized in that A wall cleaning mechanism (5) is arranged in the spraying tower (1), the wall cleaning mechanism (5) comprises a shaft sleeve (51) fixedly mounted on the rotating shaft (42), a plurality of connecting arms (52) are arranged on the outer part of the shaft sleeve (51), one end of each connecting arm (52) is provided with a scraper (53), and the scraper (53) abuts against the inner wall of the spraying tower (1).

9. A spraying apparatus for exhaust gas treatment according to claim 8, wherein The scraper (53) has a U-shaped structure, the scraper (53) is arranged obliquely, and the oblique direction of the scraper (53) is the same as the flow direction of the waste gas.

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