Acid mist waste gas treatment tower

Abstract

The utility model discloses an acid mist waste gas treatment tower which comprises a shell, the upper end of the shell is connected with a gas collecting hood, the gas collecting hood is connected with an exhaust port, a rotational flow layer, a filler layer and a demisting layer are sequentially arranged in the shell from bottom to top, the rotational flow layer comprises a rotational flow plate and spraying layers, the spraying layers are all located above the rotational flow plate, the filler layer is arranged above the rotational flow layer, and the demisting layer is located above the filler layer. The filler layer comprises a grating plate, the grating plate is filled with polyhedral balls, a spraying layer is arranged above the filler layer, a demisting layer is arranged above the spraying layer and comprises a grating plate and demisting filler, the spraying layer is composed of a spraying pipe and a spraying head, the spraying pipe is connected with a liquid supply pipe through a shell, the lower end of the liquid supply pipe is connected with a circulating pump, and the lower end of the liquid supply pipe is connected with a water pump. A dosing pipe is arranged at the upper end of the water tank, a filter plate is arranged in the water tank, and a waste liquid collecting box is arranged at the bottom of the shell. According to the utility model, the probability that waste gas impurities block the nozzle is reduced, and the frequency of replacing the filler on the filler layer is reduced.

Description

Technical Field

[0001] The utility model relates to the field of waste gas treatment and emission, in particular to an acid mist waste gas treatment tower. Background Technique

[0002] With the development of the national industrialization process, environmental pollution has become increasingly serious. In particular, air pollution has become the top priority of environmental protection and prevention. Among them, the waste gas discharged from factories often contains various chemical substances, which increases the difficulty of treatment. At present, acid mist spray towers are often used to treat the acid mist waste gas discharged from factories, but the existing spray towers still have problems such as easy blockage of nozzles and frequent maintenance and replacement of the packing layer. Content of the Utility Model

[0003] The purpose of the utility model is to provide an acid mist waste gas treatment tower in order to solve the above problems.

[0004] The utility model realizes the above purpose through the following technical solutions:

[0005] An acid mist waste gas treatment tower includes a shell. The upper end of the shell is connected with a gas collecting hood, and an exhaust port is connected to the gas collecting hood. Inside the shell, a swirl layer, a packing layer and a demisting layer are sequentially arranged from bottom to top. The swirl layer includes a swirl plate and a spraying layer. The spraying layers are all located above the swirl plate. A packing layer is arranged above the swirl layer. The packing layer includes a grid plate, and multi-faceted balls are filled above the grid plate. A spraying layer is arranged above the packing layer, and a demisting layer is arranged above the spraying layer. The demisting layer includes a grid plate and demisting fillers. The spraying layer is composed of a spraying pipe and nozzles. The spraying pipe is connected with a liquid supply pipe through the shell. The lower end of the liquid supply pipe is connected with a circulation pump. The other end of the circulation pump is provided with a water tank. A medicine feeding pipe is arranged at the upper end of the water tank. A filter plate is arranged inside the water tank. A drain port is arranged at the rear side of the water tank. A waste liquid collection box is arranged at the bottom of the shell. An air inlet is connected to the lower part of one side of the shell. Observation windows are arranged on the other side of the shell corresponding to each layer.

[0006] Further setting: The shell is a split welding type. The swirl layer is arranged in two layers. The swirl plate is an inward plate and is fixedly connected with the shell. The inclination angle of the blades on the swirl plate is 10°.

[0007] Further setting: Multiple layers of multi-faceted balls are filled above the grid plate. The spraying pipe is hermetically connected with the shell.

[0008] Further setting: The nozzles are threadedly connected with the spraying pipe and are evenly and symmetrically distributed on the spraying pipe.

[0009] Further setting: The water tank is communicated with the waste liquid collection box. The filter plate is movably connected with the water tank.

[0010] Further setting: The bottom of the waste liquid collection box is inclined towards the water tank, and the inclination degree is 5°.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: When the waste gas passes through the cyclone plate, the spray head sprays the liquid medicine. Since the spray heads are evenly distributed, the spray coverage area is maximized, increasing the purification effect by enhancing the gas-liquid combination. At the same time, the blades on the cyclone plate play a guiding role for the gas, causing the waste gas to rotate upward. After the particulate impurities and floating dust contained in the waste gas are combined with the liquid medicine, they are adsorbed onto the inner wall of the shell under the centrifugal force generated by the gas rotation. When the waste gas passing through the cyclone layer passes through the packing layer, due to the presence of the multi-faceted balls in the packing layer, the gas-liquid contact area and contact time are further increased, enabling further purification of the waste gas. Finally, after passing through the demisting layer, it is discharged through the exhaust port. Meanwhile, the waste liquid containing impurities after spraying flows into the waste liquid collection box. After the waste liquid is filtered by the filter plate in the water tank to remove impurities, it can be reused through the circulation pump, reducing the probability of the nozzles being blocked by impurities in the waste gas and decreasing the frequency of replacing the filling material in the packing layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 is an isometric view of an acid mist waste gas treatment tower according to the present utility model;

[0014] Figure 2 is a rear cross-sectional structure schematic diagram of an acid mist waste gas treatment tower according to the present utility model;

[0015] Figure 3 is a right cross-sectional structure schematic diagram of an acid mist waste gas treatment tower according to the present utility model;

[0016] Figure 4 is a bottom cross-sectional structure schematic diagram of an acid mist waste gas treatment tower according to the present utility model.

[0017] The descriptions of the reference numerals are as follows:

[0018] 1, water tank; 2, circulation pump; 3, medicine supply pipe; 4, liquid supply pipe; 5, air inlet; 6, observation window; 7, housing; 8, gas collecting hood; 9, exhaust port; 10, waste liquid collection box; 11, cyclone plate; 12, spray pipe; 13, spray head; 14, grille plate; 15, multi-faceted ball; 16, demisting filler; 17, filter plate; 18, drain port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0021] The present utility model will be further described below with reference to the drawings:

[0022] As Figures 1 - 4As shown in the figure, an acid mist waste gas treatment tower includes a housing 7. The upper end of the housing 7 is connected to a gas collection hood 8. An exhaust port 9 is connected to the gas collection hood 8, and a fan is externally connected to the exhaust port 9. Inside the housing 7, a swirl layer, a packing layer, and a demisting layer are sequentially arranged from bottom to top. The swirl layer includes a swirl plate 11 and a spraying layer. The swirl plate 11 guides the waste gas, causing the waste gas to rotate and rise. The spraying layer is located above the swirl plate 11, and the spraying layer sprays liquid medicine to purify the waste gas. A packing layer is arranged above the swirl layer. The packing layer includes a grid plate 14, and multi-faceted balls 15 are filled above the grid plate 14. The multi-faceted balls 15 increase the gas-liquid contact area and contact time. A spraying layer is arranged above the packing layer, and a demisting layer is arranged above the spraying layer. The demisting layer includes a grid plate 14 and demisting fillers 16, which can remove the absorption liquid droplets. The spraying layer is composed of a spraying pipe 12 and nozzles 13. The spraying pipe 12 is connected to a liquid supply pipe 4 through the housing 7. The lower end of the liquid supply pipe 4 is connected to a circulation pump 2. The other end of the circulation pump 2 is provided with a water tank 1. A medicine feeding pipe 3 is arranged at the upper end of the water tank 1, and a medicine box is externally connected to the medicine feeding pipe 3. A filter plate 17 is arranged inside the water tank 1. A waste liquid collection box 10 is arranged at the bottom of the housing 7. After the filter plate 17 filters out the impurities in the waste liquid, it can be used by the circulation pump 2 again. A drain port 18 is arranged at the rear side of the water tank 1, which can regularly discharge the precipitated impurities. An air inlet 5 is connected to the lower side of one side of the housing 7. Observation windows 6 are arranged corresponding to each layer on the other side of the housing 7, which is convenient for observing the spraying effect of the nozzles 13.

[0023] In this embodiment: The housing 7 is of split welding. The swirl layer is arranged in two layers. The swirl plate 11 is an inward plate, and the swirl plate 11 is fixedly connected to the housing 7. The inclination angle of the blades on the swirl plate 11 is 10°. Multiple layers of multi-faceted balls 15 are filled above the grid plate 14. The spraying pipe 12 is hermetically connected to the housing 7.

[0024] In this embodiment: The nozzle 13 is threadedly connected to the spraying pipe 12, and the nozzles 13 are evenly and symmetrically distributed on the spraying pipe 12. The water tank 1 is connected to the waste liquid collection box 10 in a through manner. The filter plate 17 is movably connected to the water tank 1. The bottom of the waste liquid collection box 10 is inclined towards the water tank, and the inclination degree is 5°.

[0025] Working principle and usage process of the utility model: During use, waste gas enters the treatment tower through the air inlet 5. Since a draft fan is externally connected to the exhaust port 9, the waste gas rises. When the waste gas passes through the cyclone plate 11, the liquid medicine in the water tank 1 is transported to the spray pipe 12 through the liquid supply pipe 4 under the action of the circulation pump 2, and then the liquid medicine is sprayed through the spray head 13. Since the spray heads 13 are evenly distributed on the spray pipe 12, the spray coverage area is maximized, the gas-liquid contact area is increased, and at the same time, the blades on the cyclone plate 11 play a guiding role for the gas, causing the waste gas to rotate upward. After the particulate impurities and floating dust contained in the waste gas are combined with the liquid medicine, they are separated from the gas-liquid by the centrifugal force generated by the rotation of the gas, and thus adsorbed onto the inner wall of the housing 7. The waste gas passing through the two cyclone layers basically removes the particulate impurities and floating dust. When passing through the packing layer, due to the presence of the multi-faceted balls 15 in the packing layer, the gas-liquid contact area and contact time are increased again, further purifying the waste gas. Finally, the absorption liquid droplets are removed through the demisting layer and discharged through the exhaust port 9. At the same time, the waste liquid containing impurities after spraying flows into the waste liquid collection box 10. The bottom of the waste liquid treatment box 10 is an inclined surface, and some impurities precipitate at the bottom. The waste liquid collection box 10 is communicated with the water tank 1. After the waste liquid is filtered by the filter plate 17 in the water tank 1 to remove impurities, it is sprayed again through the circulation pump 2. At the same time, the externally connected medicine box can add treatment agent into the water tank 1 through the medicine supply pipe 3. The drain port 18 on the water tank 1 can be opened regularly to discharge the precipitated impurities.

[0026] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art of this industry should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. An acid mist waste gas treatment tower, comprising a shell (7), the upper end of the shell (7) is connected to a gas collecting hood (8), the gas collecting hood (8) is connected to an exhaust port (9), and the shell (7) is provided with a cyclone layer, a packing layer and a demisting layer in sequence from bottom to top, characterized in that: The swirl layer comprises a swirl plate (11) and a spray layer, the spray layer is located above the swirl plate (11), the packing layer is arranged above the swirl layer, the packing layer comprises a grid plate (14), the upper end of the grid plate (14) is filled with a multifaceted ball (15), the spray layer is arranged above the packing layer, the demisting layer is arranged above the spray layer, the demisting layer comprises the grid plate (14) and a demisting filler (16), the spray layer consists of a spray pipe (12) and a spray head (13), the spray pipe (12) passes through A liquid supply pipe (4) is connected to the shell (7), the lower end of the liquid supply pipe (4) is connected to a circulation pump (2), the other end of the circulation pump (2) is provided with a water tank (1), the upper end of the water tank (1) is provided with a drug delivery pipe (3), a filter plate (17) is provided in the water tank (1), a drain outlet (18) is provided at the rear side of the water tank (1), a waste liquid collection box (10) is provided at the bottom of the shell (7), an air inlet (5) is connected to the lower side of one side of the shell (7), and an observation window (6) is provided on the other side of the shell (7) corresponding to each layer.

2. The acid mist waste gas treatment tower according to claim 1, characterized in that: The shell (7) is welded in split form, the swirl layer is arranged as two layers, the swirl plate (11) is an inward plate, the swirl plate (11) is fixedly connected to the shell (7), and the blade inclination angle of the swirl plate (11) is 10°.

3. The acid mist waste gas treatment tower according to claim 1, characterized in that: The upper end of the grid plate (14) is filled with multiple layers of the multi-faceted balls (15), and the spray pipe (12) is sealedly connected to the shell (7).

4. The acid mist waste gas treatment tower according to claim 1, characterized in that: The spray heads (13) are threadedly connected to the spray pipe (12), and the spray heads (13) are evenly and symmetrically distributed on the spray pipe (12).

5. The acid mist waste gas treatment tower according to claim 1, characterized in that: The water tank (1) is connected to the waste liquid collection tank (10) through-connected, and the filter plate (17) is movably connected to the water tank (1).

6. The acid mist waste gas treatment tower according to claim 1, characterized in that: The bottom of the waste liquid collection box (10) is inclined toward the water tank (1) with an inclination of 5°.

Images