Tower type waste gas treatment device

Abstract

The utility model discloses a tower type waste gas treatment device which comprises a tower body, a spraying layer and a gas treatment area, the tower body is provided with a gas inlet, a gas outlet and a drain outlet; the spraying layer is located at the lower section in the tower body and comprises a spraying channel and a spraying pipe, and the spraying pipe is provided with a plurality of spraying heads and can spray spraying liquid into the spraying channel; the gas treatment area is located at the upper section of the tower body and provided with a drying layer and an adsorption layer, the drying layer is connected to an upper channel opening of the spraying channel and can dry the waste gas, and the adsorption layer is arranged above the drying layer and can adsorb the dried waste gas. According to the utility model, the spiral spraying channel is arranged, waste gas spirally ascends in the spraying channel and is sprayed, the reacted spraying liquid downwards flows into the sewage outlet, and the sprayed waste gas upwards enters the gas treatment area for drying and adsorption treatment, so that the drainage and discharge of the sprayed waste liquid are realized; and the interference of the reacted waste liquid on the lower end spraying is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a tower type waste gas treatment device. Background Art

[0002] Tower-type waste gas treatment device is a common industrial waste gas treatment device, which is mainly used to remove pollutants such as particulate matter, acidic gas, alkaline gas, volatile organic compounds (VOCs) in waste gas.

[0003] At present, the commonly used tower-type exhaust gas treatment device usually adopts a layered treatment method. The tower-type exhaust gas treatment device treats the exhaust gas, that is, after the exhaust gas is discharged into the tower, it passes through the spray layer, drying layer, and adsorption layer in sequence, and is finally discharged out of the tower. Among them, in the spray layer, there are usually multiple layers of spray mechanisms from top to bottom. Since the exhaust gas often contains particulate dust, a single spray is difficult to fully remove the particulate dust and dissolved harmful gases therein. Therefore, a multi-layer spraying method is usually adopted to perform multiple spraying treatments on the particulate matter in the exhaust gas discharged from bottom to top. Although this hierarchical spraying treatment method can effectively complete the spraying treatment of the exhaust gas and reduce the particulate matter in the exhaust gas, after the upper spray liquid reacts in the packing layer, it will flow downward into the lower packing layer, resulting in uneven distribution of the lower spray liquid in the packing layer and incomplete contact with the exhaust gas. In addition, the solid particles removed by the upper spray liquid will flow into the lower packing layer, which may cause blockage of the lower packing layer, thereby affecting the effect of the lower spraying.

[0004] Therefore, the tower treatment device currently uses layered spraying to treat particulate matter in exhaust gas is prone to falling into the lower spraying area after being sprayed, affecting the lower spraying effect, and further affecting the spraying effect in the tower exhaust gas treatment device. Utility Model Content

[0005] The purpose of the utility model is to provide a tower-type exhaust gas treatment device to solve the technical problem in the prior art that particulate matter in the exhaust gas, after being sprayed, easily falls to the lower spraying area and affects the spraying effect of the lower layer, thereby affecting the effect of the spraying treatment in the tower-type exhaust gas treatment device.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A tower-type exhaust gas treatment device, comprising:

[0008] A tower body, wherein the outer wall of the bottom of the tower body has an air inlet, and the upper end thereof has an air outlet, and the bottom of the tower body has a sewage outlet, which is close to the air inlet and located below the air inlet 11;

[0009] a spray layer, located in the lower section of the tower body, having a spirally ascending spray channel therein, the bottom channel opening of the spray channel being connected to the air inlet, a spirally ascending spray pipe being provided inside the spray channel and being a fixed distance above the surface thereof, a plurality of spray heads being evenly spaced on the spray pipe and spraying toward the surface of the spray channel to perform spray treatment on the exhaust gas passing therethrough;

[0010] The gas treatment zone is located in the upper section of the tower body, and includes a drying layer and an adsorption layer. One end of the drying layer is connected to the upper channel opening of the spray channel to guide the waste gas after spray treatment to flow in a directional manner and perform drying treatment. The adsorption layer is arranged above the drying layer to adsorb the dry waste gas discharged from the drying layer.

[0011] Among them, when the exhaust gas enters the tower body from the air inlet, the spray channel guides the exhaust gas to be discharged in a spiral upward, and the spray pipe sprays the exhaust gas passing through the spray channel to settle the solid particles in the exhaust gas and spirally flow downward to the drain port for discharge, so as to extend the spray treatment path and improve the treatment effect of particulate matter in the exhaust gas.

[0012] As a preferred solution of the present invention, a packing layer is further provided in the spray channel. The packing layer is spirally mounted above the lower surface of the spray channel along the spray channel, and a drainage groove is provided below the packing layer.

[0013] As a preferred solution of the present invention, a spray liquid barrel and a liquid pump are provided outside the tower body. The liquid pump is connected to the spray liquid barrel and is connected to the spray pipe inside the tower body.

[0014] As a preferred solution of the present invention, the drying layer includes a demister plate and a condensation dryer. The demister plate is arranged at the upper opening of the spray channel, and the condensation dryer is arranged above the demister plate.

[0015] As a preferred solution of the present invention, a drainage groove is provided below the demister plate, a drainage plate is provided between the demister plate and the condenser dryer, the drainage plate is inclined, and a vent is provided upstream thereof;

[0016] Wherein, a drainage pipe is provided outwardly at the downstream end of the guide plate and one side of the bottom end of the demisting plate, and the drainage pipe is connected to the sewage outlet.

[0017] As a preferred solution of the present invention, the adsorption layer includes several activated carbon layers, and vent holes are distributed on the activated carbon layers, which can adsorb the dried waste gas.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The utility model sets a spiral spray channel, and the waste gas spirally rises and sprays in the spray channel. The spray liquid after the reaction flows downward into the sewage outlet, and the waste gas after the spraying enters the gas treatment area upward for drying and adsorption treatment, thereby realizing the drainage and discharge of the waste liquid after the spraying and avoiding the interference of the waste liquid after the reaction on the spraying at the lower end. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0021] Figure 1 A schematic structural diagram of a tower-type exhaust gas treatment device is provided for an embodiment of the utility model;

[0022] Figure 2 Provides a schematic diagram of the structure of the spray layer portion for an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of the structure of a drying layer is provided for an embodiment of the present utility model.

[0024] The numbers in the figure represent the following:

[0025] 1-tower body; 2-spray layer; 3-gas processing area;

[0026] 11-air inlet; 12-air outlet; 13-drain outlet; 21-spray channel; 22-spray pipe; 23-packing layer; 24-drain trough; 25-spray liquid barrel; 26-liquid pump; 31-drying layer; 32-adsorption layer; 33-drain pipe;

[0027] 221-Spray head; 311-Defog plate; 312-Condensation dryer; 313-Drainage trough; 314-Drainage plate; 315-Vent; 321-Activated carbon layer. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figures 1 to 2As shown, the utility model provides a tower-type exhaust gas treatment device, comprising:

[0030] The tower body 1 has an air inlet 11 on its bottom outer wall and an air outlet 12 at its upper end. The bottom of the tower body 1 has a sewage outlet 13, which is close to the air inlet 11 and located below the air inlet 11.

[0031] The spray layer 2 is located in the lower section of the tower body 1 and has a spirally ascending spray channel 21 therein. The bottom channel opening of the spray channel 21 is connected to the air inlet 11. A spirally ascending spray pipe 22 is provided inside the spray channel 21 and is a fixed distance above the surface of the spray channel. A plurality of spray heads 221 are evenly spaced on the spray pipe 22 and spray toward the surface of the spray channel 21 to treat the exhaust gas passing through.

[0032] The gas treatment zone 3 is located in the upper section of the tower body 1 and includes a drying layer 31 and an adsorption layer 32. One end of the drying layer 31 is connected to the upper channel opening of the spray channel 21 to guide the waste gas after spray treatment to flow in a directional manner and perform drying treatment. The adsorption layer 32 is arranged above the drying layer 31 to adsorb the dry waste gas discharged from the drying layer 31.

[0033] Among them, when the exhaust gas enters the tower body 1 from the air inlet 11, the spray channel 21 guides the exhaust gas to be discharged in a spiral upward, and the spray pipe 22 sprays the exhaust gas passing through the spray channel 21 to settle the solid particles in the exhaust gas and spirally flow downward to the sewage outlet 13 for discharge, so as to extend the spray treatment path and improve the treatment effect of particulate matter in the exhaust gas.

[0034] This embodiment mainly uses the spray pipe 22 to spray the exhaust gas entering the spray channel 21 from the air inlet 11. The exhaust gas spirals up along the spray channel 21, and the spray liquid settles the solid particles in the exhaust gas and spirally flows downward to the sewage outlet 13 for discharge. The exhaust gas enters the drying layer 311 from the opening on the spray channel 21 for drying. After drying, it enters the adsorption layer 32 upward for adsorption, and is finally discharged upward through the air outlet 12.

[0035] In this embodiment, the waste gas is sprayed through a spirally ascending spray channel 21. The spray liquid settles the solid particles in the waste gas and spirally flows downward to the sewage outlet 13 for discharge. The treated waste gas passes through the drying layer 311 and upward into the adsorption layer 32. After sufficient adsorption, it is discharged through the gas outlet 12, which extends the spray path, avoids the interference of the upper end spray liquid on the lower end spray, and improves the particulate matter treatment effect in the waste gas.

[0036] In order to enable the spray liquid and the exhaust gas to fully react in the spray channel 21, the following preferred embodiments are proposed.

[0037] like Figures 1 to 2As shown, a packing layer 23 is further provided in the spray channel 21 . The packing layer 23 is spirally mounted above the lower surface of the spray channel 21 along the spray channel 21 , and a drainage groove 24 is provided below the packing layer 23 .

[0038] Specifically, the exhaust gas spirals upward along the packing layer 23 , the spray liquid falls into the packing layer 23 and fully reacts with the exhaust gas, and finally falls into the drainage trough 24 and flows downward into the sewage outlet 13 .

[0039] To spray the filler layer, it is necessary to transport the spray liquid into the spray pipe 22, and thus, the following preferred embodiments are proposed.

[0040] like Figure 1 As shown, a spray liquid barrel 25 and a liquid pump 26 are provided outside the tower body 1 . The liquid pump 26 is connected to the spray liquid barrel 25 and is connected to the spray pipe 22 inside the tower body 1 .

[0041] Specifically, the liquid pump 26 pumps the spray liquid in the spray liquid barrel 25 into the spray pipe 22 and sprays it through the spray head 221.

[0042] After being sprayed, the exhaust gas becomes moist and carries droplets, and the solution is adsorbed on the surface of the activated carbon, resulting in a decrease in the adsorption capacity of the activated carbon. Therefore, the following preferred embodiments are proposed.

[0043] like Figure 1 and 3 As shown, the drying layer 31 includes a demister plate 311 and a condensation dryer 312 . The demister plate 311 is disposed at an opening on the spray channel 21 , and the condensation dryer 312 is disposed above the demister plate 311 .

[0044] Specifically, the exhaust gas enters the drying layer 31 after being sprayed, and first passes through the demister plate 311 to remove the mist droplets carried by the exhaust gas, and then passes through the condenser dryer 312 to remove the steam in the exhaust gas.

[0045] Among them, high temperature will also affect the adsorption capacity of activated carbon. Therefore, the use of a condensation dryer can not only dry the exhaust gas, but also reduce the temperature of the exhaust gas.

[0046] The mist droplets will be adsorbed on the mist eliminator 311 when passing through the mist eliminator 311 and will flow down when forming larger droplets. The steam in the exhaust gas will form liquid after condensation. Therefore, in order to prevent liquid accumulation in the drying layer, the following preferred embodiment is proposed.

[0047] like Figure 1 and 3 As shown, a drainage groove 313 is provided below the demister plate 311, and a drainage plate 314 is provided between the demister plate 311 and the condenser dryer 312. The drainage plate 314 is inclined, and a vent 331 is provided upstream thereof;

[0048] A drainage pipe 33 is provided outwardly at the downstream end of the guide plate 314 and one side of the bottom end of the demister plate 311 , and the drainage pipe 33 is connected to the sewage outlet 13 .

[0049] Specifically, the liquid droplets on the demister plate 311 flow downward through the drainage groove 313 into the drain pipe 33 on one side. The liquid droplets formed by condensation drip into the drainage plate 314 and flow into the drain pipe 33, and finally flow into the sewage outlet 13 along the drain pipe 33.

[0050] In order to enable the exhaust gas to flow upward smoothly, the following preferred embodiments are proposed.

[0051] like Figure 1 As shown, the adsorption layer 32 includes a plurality of activated carbon layers 321 , and vent holes are distributed on the activated carbon layers 321 , which can adsorb the dried exhaust gas.

[0052] Specifically, after being dried, the exhaust gas enters the adsorption layer 32 upwards and is fully adsorbed by the activated carbon layer 321 . The activated carbon layer 321 has vents, which can increase the contact area between the exhaust gas and the activated carbon layer 321 .

[0053] Among them, induced draft fans are provided at both the air inlet and the air outlet to ensure smooth circulation of exhaust gas in the tower body 1.

[0054] When this embodiment is working, the exhaust gas enters the spray channel 21 through the air inlet 11 and spirally rises along the packing layer 23. At the same time, the liquid pump 26 pumps spray liquid into the spray pipe 22 for spraying. After the reaction is completed in the packing layer, the spray liquid flows downward into the drain groove 24 and flows into the sewage outlet 13 along the drain groove 24. After spraying, the exhaust gas enters the drying layer 31 through the opening on the spray channel 21, passes through the demisting plate 311 to remove droplets, and then passes through the condensing dryer 312 for drying. At the same time, the droplets generated in the drying layer 31 all flow into the sewage outlet 13 through the drain pipe 33. The dried exhaust gas continues to pass through the adsorption layer 32 upward, fully contacts and adsorbs with the activated carbon layer 321, and then flows upward and is discharged through the air outlet 12.

[0055] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A tower type exhaust gas treatment device, characterized in that: include: A tower body (1), wherein the outer wall of the bottom of the tower body (1) has an air inlet (11), and the upper end thereof has an air outlet (12); the bottom of the tower body (1) has a sewage outlet (13), and the sewage outlet (13) is close to the air inlet (11) and located below the air inlet (11); A spray layer (2) is located in the lower section of the tower body (1), and has a spirally ascending spray channel (21) therein. The bottom channel opening of the spray channel (21) is connected to the air inlet (11). A spray pipe (22) is provided inside the spray channel (21) and is a fixed distance above the surface thereof and spirally ascending. A plurality of spray heads (221) are provided on the spray pipe (22) at equal intervals and spray toward the surface of the spray channel (21) to spray the passing exhaust gas. A gas treatment zone (3) is located in the upper section of the tower body (1). The gas treatment zone (3) includes a drying layer (31) and an adsorption layer (32). One end of the drying layer (31) is connected to the upper channel opening of the spray channel (21) to guide the waste gas after spray treatment to flow in a directional manner and perform drying treatment. The adsorption layer (32) is arranged above the drying layer (31) to perform adsorption treatment on the dry waste gas discharged from the drying layer (31). When the waste gas enters the tower body (1) from the air inlet (11), the spray channel (21) guides the waste gas to be discharged in a spiral upward direction, and the spray pipe (22) sprays the waste gas passing through the spray channel (21) to settle the solid particles in the waste gas and make them flow in a spiral downward direction to be discharged from the sewage outlet (13), thereby extending the spray treatment path and improving the treatment effect of the particles in the waste gas.

2. A tower type exhaust gas treatment device according to claim 1, characterized in that: A packing layer (23) is also provided in the spray channel (21), and the packing layer (23) is spirally mounted above the lower surface of the spray channel (21) along the spray channel (21), and a drainage groove (24) is provided below the packing layer (23).

3. A tower type exhaust gas treatment device according to claim 1, characterized in that: A spray liquid barrel (25) and a liquid pump (26) are provided outside the tower body (1); the liquid pump (26) is connected to the spray liquid barrel (25) and is connected to the spray pipe (22) inside the tower body (1).

4. A tower type exhaust gas treatment device according to claim 1, characterized in that: The drying layer (31) comprises a demister plate (311) and a condensation dryer (312); the demister plate (311) is arranged at an opening on the spray channel (21); and the condensation dryer (312) is arranged above the demister plate (311).

5. A tower type exhaust gas treatment device according to claim 4, characterized in that: A drainage groove (313) is provided below the demister plate (311), a drainage plate (314) is provided between the demister plate (311) and the condenser dryer (312), the drainage plate (314) is inclined, and a vent (315) is provided upstream thereof; Wherein, a drainage pipe (33) is provided outwardly at the downstream end of the guide plate (314) and one side of the bottom end of the demisting plate (311), and the drainage pipe (33) is connected to the sewage outlet (13).

6. The tower type exhaust gas treatment device according to claim 1, characterized in that: The adsorption layer (32) comprises a plurality of activated carbon layers (321), and vent holes are distributed on the activated carbon layers (321), which can perform adsorption treatment on the dried waste gas.

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