Alkali type spray tower for waste gas treatment

Abstract

The utility model relates to the technical field of waste gas treatment, and provides an alkaline spray tower for waste gas treatment, which comprises a placing plate, the top of the placing plate is fixedly connected with a tower body, and the side surface of the tower body is provided with a rectification device; the rectifying device comprises a feeding port, the feeding port is formed in the circumferential face of the tower body, an inlet is formed in the top of the tower body, an input pipe is fixedly connected to the interior of the inlet, and a heat exchanger is fixedly connected to one end of the input pipe. According to the technical scheme, the problems that in the prior art, through the effect of the heat exchanger and cooperation of the discharging pipe, the gas inlet pipe, the inlet, the conveying pipe, the reboiler and other components in the rectification device, part of waste gas generated after heating and rectification can be discharged through the discharging pipe, and the remaining waste gas can enter the tower body again through the gas inlet pipe, so that the waste gas cannot be recycled are solved. Therefore, the waste gas can be rectified, and the waste gas enters the reboiler to be rectified for the second time.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to an alkaline spray tower for waste gas treatment. Background Technology

[0002] Alkaline spray towers for waste gas treatment are commonly used to remove harmful substances from waste gases, especially when treating acidic gases (such as hydrogen chloride, sulfur dioxide, etc.).

[0003] According to a public disclosure (publication number: CN 210631908 U), a horizontal spray tower for waste gas treatment includes a housing with an air inlet and an air outlet at both ends. In traditional horizontal spray towers, the flow path of waste gas within the tower is short and the flow velocity is fast, resulting in low absorption efficiency of harmful substances in the waste gas. In this invention, when treating waste gas, the waste gas enters the housing through the air inlet, passes through the first spray zone and the second spray zone in sequence, and then undergoes two demisting processes by a folded demister before finally being discharged from the air outlet of the spray tower. Through the setting of inclined longitudinal baffles, the waste gas is forced to move in an S-shape after entering the housing, increasing the movement distance and the residence time within the housing.

[0004] The aforementioned application uses inlet and outlet components at both ends of the casing, which makes it impossible to spray and purify the waste gas, resulting in the inability to dissolve or transform harmful gases. Therefore, we propose an alkaline spray tower for waste gas treatment. Utility Model Content

[0005] This utility model proposes an alkaline spray tower for waste gas treatment, which solves the problems mentioned in the above documents.

[0006] The technical solution of this utility model is as follows: it includes a placement plate, a tower body is fixedly connected to the top of the placement plate, and a distillation device is provided on the side of the tower body;

[0007] The distillation apparatus includes a feed inlet located on the circumferential surface of the column body. An inlet is located at the top of the column body. An inlet pipe is fixedly connected inside the inlet pipe. A heat exchanger is fixedly connected to one end of the inlet pipe. A discharge pipe is fixedly connected through the bottom of the heat exchanger. An inlet pipe is fixedly connected to the circumferential surface of the discharge pipe. One end of the inlet pipe is fixedly connected through the circumferential surface of the column body.

[0008] The bottom of the tower body has an inlet, and a feed pipe is fixedly connected to the inner wall of the inlet. One end of the feed pipe is fixedly connected to a reboiler. The function of the feed pipe is to transport the contents entering the tower body into the reboiler, and the function of the reboiler is to distill the contents.

[0009] A gas supply pipe is fixedly inserted through the side of the reboiler, one end of which is fixedly inserted through the circumference of the column body. An outlet pipe is fixedly inserted through the bottom of the reboiler. The outlet pipe is used to discharge the distilled product, and the gas supply pipe is used to send the gas back into the column body.

[0010] The bottom of the heat exchanger is located above the reboiler, and the bottom of the feed pipe is located above the inlet pipe. The purpose of the bottom of the heat exchanger being located above the reboiler is to allow the gas to enter the heat exchanger first and then the reboiler for distillation.

[0011] A spraying device is provided on the top of the placement plate. The spraying device includes a water storage tank. A support plate is fixedly connected to the top of the water storage tank. A motor is fixedly connected to the bottom of the support plate. A rotating shaft is fixedly connected to the output shaft of the motor. The circumferential surface of the rotating shaft passes through the top of the water storage tank. The circumferential surface of the rotating shaft is rotatably connected to the inner wall of the water storage tank. A water outlet is opened on the circumferential surface of the water outlet. A water pipe is fixedly connected to the inner wall of the water outlet. The circumferential surface of the water pipe passes through the circumferential surface of the tower body. A spray strip is fixedly connected to one end of the water pipe. The function of the spray strip is to spray an alkaline solution into the tower body.

[0012] The water storage tank has an inlet at the top, and a plug is threaded onto the top of the inlet. The purpose of the inlet is to introduce water and alkaline substances into the water storage tank.

[0013] The circumferential surface of the rotating shaft is provided with a sliding groove, and a slider is slidably connected to the inner wall of the sliding groove. A connecting plate is fixedly connected to the side of the slider. The function of the slider is to drive the stirring rod to move up and down through the connecting plate.

[0014] A stirring rod is fixedly inserted through the top of the connecting plate, and a push column is fixedly connected inside the water storage tank. The function of the stirring rod is to mix the water and alkaline liquid in the water storage tank.

[0015] A water outlet pipe is fixedly inserted through the circumference of the conveying pipe, and a drain valve is provided on the circumference of the water pipe. The function of the water outlet pipe is to discharge the sprayed alkaline solution, and the function of the drain valve is to control the alkaline solution in the water pipe to be sprayed out through the spray bar.

[0016] The circumferential surface of the spray bar is located inside the tower body. The number of the chute, slider, connecting plate, stirring rod, and push column is set to several, and they are arranged in a circumferential array along the circumferential surface of the rotation axis. The shape of the push column is cylindrical, and the circumferential surface of the push column is inclined. The purpose of setting the number of the chute, slider, connecting plate, stirring rod, and push column to several, and arranging them in a circumferential array along the circumferential surface of the rotation axis, is to better stir the liquid in the water storage tank. The purpose of setting the shape of the push column to cylindrical, and the purpose of setting the circumferential surface of the push column, is to allow the stirring rod to move upward using the slider and the chute.

[0017] The working principle and beneficial effects of this utility model are as follows:

[0018] 1. In this utility model, through the function of the heat exchanger and the cooperation of components such as the discharge pipe, gas inlet pipe, inlet, feed pipe, and reboiler inside the distillation device, the waste gas enters the tower body and enters the heat exchanger through the inlet pipe for preliminary heating and distillation. After heating, part of the distilled waste gas is discharged through the discharge pipe, and the remaining waste gas re-enters the tower body through the gas inlet pipe, thereby enabling the waste gas to be distilled and then enter the reboiler for secondary distillation.

[0019] 2. In this utility model, the rotation of the motor output shaft and the cooperation of components such as the water storage tank, rotating shaft, water outlet, water pipe, spray bar, water inlet, chute, slider, and stirring rod inside the spraying device enable the liquid in the water storage tank to flow through the water outlet and along the water pipe into the spray bar, thereby spraying an alkaline solution into the tower body, dissolving or transforming harmful gases, thus achieving the purpose of purifying waste gas. The rotation of the rotating shaft and stirring rod can also stir the water and alkaline liquid inside the tower body, so that they can be mixed evenly. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a three-dimensional appearance structure diagram of the present utility model;

[0022] Figure 2 This is a three-dimensional overall structural diagram of the distillation apparatus of this utility model;

[0023] Figure 3 This is a three-dimensional overall structural diagram of the spray device of this utility model;

[0024] Figure 4 This utility model Figure 3 A three-dimensional magnified structural diagram of A in the middle;

[0025] Figure 5 This utility model Figure 3 A three-dimensional magnified structural diagram of B.

[0026] In the diagram: 1. Placement plate; 2. Tower body; 3. Distillation unit; 31. Feed inlet; 32. Inlet; 33. Feed pipe; 34. Heat exchanger; 35. Discharge pipe; 36. Gas inlet pipe; 37. Inlet; 38. Feed pipe; 39. Reboiler; 310. Gas pipe; 311. Discharge pipe; 4. Spraying device; 41. Water storage tank; 42. Support plate; 43. Motor; 44. Shaft; 45. Water outlet; 46. Water pipe; 47. Spray bar; 48. Water inlet; 49. Plug; 410. Slide chute; 411. Sliding block; 412. Connecting plate; 413. Stirring rod; 414. Push column; 415. Water outlet pipe; 416. Drain valve. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. 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 of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0028] Example 1

[0029] like Figures 1-5 As shown, this embodiment proposes an alkaline spray tower for waste gas treatment, including a placement plate 1, a tower body 2 fixedly connected to the top of the placement plate 1, and a distillation device 3 provided on the side of the tower body 2.

[0030] The distillation apparatus 3 includes a feed inlet 31, which is located on the circumferential surface of the column body 2. An inlet 32 ​​is located at the top of the column body 2. An inlet pipe 33 is fixedly connected inside the inlet 32. A heat exchanger 34 is fixedly connected to one end of the inlet pipe 33. A discharge pipe 35 is fixedly connected through the bottom of the heat exchanger 34. An inlet pipe 36 is fixedly connected to the circumferential surface of the discharge pipe 35. One end of the inlet pipe 36 is fixedly connected through the circumferential surface of the column body 2.

[0031] The bottom of the tower body 2 is provided with an inlet 37. The inner wall of the inlet 37 is fixedly connected to a feed pipe 38. One end of the feed pipe 38 is fixedly connected to a reboiler 39. The function of the feed pipe 38 is to transport the contents entering the tower body 2 into the reboiler 39. The function of the reboiler 39 is to distill the contents.

[0032] A gas supply pipe 310 is fixedly inserted through the side of the reboiler 39. One end of the gas supply pipe 310 is fixedly inserted through the circumferential surface of the column body 2. An outlet pipe 311 is fixedly inserted through the bottom of the reboiler 39. The function of the outlet pipe 311 is to discharge the distilled product. The function of the gas supply pipe 310 is to send the gas back into the column body 2.

[0033] The bottom of heat exchanger 34 is located above reboiler 39, and the bottom of inlet pipe 33 is located above inlet pipe 36. The purpose of placing the bottom of heat exchanger 34 above reboiler 39 is to allow the gas to enter heat exchanger 34 first and then reboiler 39 for distillation.

[0034] In this embodiment, firstly, when it is necessary to use the device to distill the waste gas, the waste gas can be distilled by the distillation device 3. The waste gas is first fed into the tower body 2 through the feed port 31. After the waste gas enters the tower body 2, it will enter the heat exchanger 34 through the inlet 32 ​​and the feed pipe 33 for preliminary heating and distillation. After heating, part of the distilled waste gas will be discharged through the discharge pipe 35, and the remaining waste gas will re-enter the tower body 2 through the inlet pipe 36. After the waste gas re-enters the tower body 2, it will enter the reboiler 39 through the inlet 37 and the feed pipe 38. The waste gas will be further heated and distilled by the reboiler 39. After distillation, the waste gas will be discharged through the outlet pipe 311.

[0035] Example 2

[0036] like Figures 1-5 As shown, based on the same concept as in Embodiment 1 above, a second embodiment is proposed. A spraying device 4 is provided on the top of the placement plate 1. The spraying device 4 includes a water storage tank 41. A support plate 42 is fixedly connected to the top of the water storage tank 41. A motor 43 is fixedly connected to the bottom of the support plate 42. A rotating shaft 44 is fixedly connected to the output shaft of the motor 43. The circumferential surface of the rotating shaft 44 passes through the top of the water storage tank 41. The circumferential surface of the rotating shaft 44 is rotatably connected to the inner wall of the water storage tank 41. A water outlet 45 is opened on the circumferential surface of the water storage tank 41. A water pipe 46 is fixedly connected to the inner wall of the water outlet 45. The circumferential surface of the water pipe 46 is fixedly connected to the circumferential surface of the tower body 2. A spray strip 47 is fixedly connected to one end of the water pipe 46. The function of the spray strip 47 is to spray an alkaline solution inside the tower body 2.

[0037] The top of the water storage tank 41 is provided with a water inlet 48, and a plug 49 is threadedly connected to the top of the water inlet 48. The function of the water inlet 48 is to introduce water and alkaline substances into the water storage tank 41.

[0038] The circumferential surface of the rotating shaft 44 is provided with a sliding groove 410, and a slider 411 is slidably connected to the inner wall of the sliding groove 410. A connecting plate 412 is fixedly connected to the side of the slider 411. The function of the slider 411 is to drive the stirring rod 413 to move up and down through the connecting plate 412.

[0039] A stirring rod 413 is fixedly inserted through the top of the connecting plate 412, and a pusher 414 is fixedly connected inside the water storage tank 41. The function of the stirring rod 413 is to mix the water and alkaline liquid in the water storage tank 41.

[0040] A water outlet pipe 415 is fixedly inserted through the circumference of the conveying pipe 38. A drain valve 416 is provided on the circumference of the water pipe 46. The function of the water outlet pipe 415 is to discharge the sprayed alkaline solution, and the function of the drain valve 416 is to control the alkaline solution in the water pipe 46 to be sprayed out through the spray bar 47.

[0041] The circumferential surface of the spray bar 47 is located inside the tower body 2. The number of chute 410, slider 411, connecting plate 412, stirring rod 413 and push column 414 is set to several, and they are arranged in a circular array along the circumferential surface of the rotating shaft 44. The shape of the push column 414 is set to cylindrical, and the circumferential surface of the push column 414 is inclined. The purpose of setting the number of chute 410, slider 411, connecting plate 412, stirring rod 413 and push column 414 to several, and arranging them in a circular array along the circumferential surface of the rotating shaft 44, is to better stir the liquid in the water storage tank 41. The purpose of setting the shape of the push column 414 to cylindrical, and the purpose of setting the circumferential surface of the push column 414 to inclined, is to allow the stirring rod 413 to move upward using the slider 411 and chute 410.

[0042] In this embodiment, when the waste gas is distilled, the waste gas inside the tower 2 can be purified by using a spray device 4. First, water and alkaline liquid are poured into the water storage tank 41 in equal proportions through the water inlet 48. Then, the motor 43 is started. When the output shaft of the motor 43 rotates, it drives the rotating shaft 44 to rotate. When the rotating shaft 44 rotates, it drives the slider 411 in the slide 410 to rotate. When the slider 411 rotates, it drives the connecting plate 412 to rotate. When the connecting plate 412 rotates, it drives the stirring rod 413 to rotate. Thus, when the stirring rod 413 rotates, it stirs the water and alkaline liquid in the water storage tank 41. This allows for thorough mixing. When the stirring rod 413 rotates, it contacts the push column 414. After contacting the push column 414, the stirring rod 413 moves upward using the slide groove 410 and the slider 411 due to the rotation of the rotating shaft 44 and the inclined surface of the push column 414. This allows for up-and-down stirring of the liquid in the water storage tank 41, resulting in a more uniform mixture. After mixing is complete, the drain valve 416 is opened, allowing the liquid in the water storage tank 41 to flow through the outlet 45 along the water pipe 46 into the spray bar 47. The spray bar 47 then sprays the liquid into the tower body 2, dissolving or transforming harmful gases, thereby achieving the purpose of purifying the waste gas.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An alkaline spray tower for waste gas treatment, characterized in that, Includes a placement plate (1), the top of which is fixedly connected to a tower body (2), and a distillation device (3) is provided on the side of the tower body (2). The distillation apparatus (3) includes a feed inlet (31) which is located on the circumferential surface of the column body (2). The top of the column body (2) is provided with an inlet (32). An inlet pipe (33) is fixedly connected inside the inlet (32). A heat exchanger (34) is fixedly connected to one end of the inlet pipe (33). A discharge pipe (35) is fixedly passed through the bottom of the heat exchanger (34). An air inlet pipe (36) is fixedly connected to the circumferential surface of the discharge pipe (35). One end of the air inlet pipe (36) is fixedly passed through the circumferential surface of the column body (2).

2. The alkaline spray tower for waste gas treatment according to claim 1, characterized in that, The bottom of the tower body (2) is provided with an inlet (37), and a conveying pipe (38) is fixedly connected to the inner wall of the inlet (37). One end of the conveying pipe (38) is fixedly connected to a reboiler (39).

3. The alkaline spray tower for waste gas treatment according to claim 2, characterized in that, A gas delivery pipe (310) is fixedly inserted through the side of the reboiler (39), one end of which is fixedly inserted through the circumferential surface of the tower body (2), and an outlet pipe (311) is fixedly inserted through the bottom of the reboiler (39).

4. The alkaline spray tower for waste gas treatment according to claim 3, characterized in that, The bottom of the heat exchanger (34) is located above the reboiler (39), and the bottom of the feed pipe (33) is located above the air inlet pipe (36).

5. The alkaline spray tower for waste gas treatment according to claim 4, characterized in that, A spraying device (4) is provided on the top of the placement plate (1). The spraying device (4) includes a water storage tank (41). A support plate (42) is fixedly connected to the top of the water storage tank (41). A motor (43) is fixedly connected to the bottom of the support plate (42). A rotating shaft (44) is fixedly connected to the output shaft of the motor (43). The circumferential surface of the rotating shaft (44) passes through the top of the water storage tank (41). The circumferential surface of the rotating shaft (44) is rotatably connected to the inner wall of the water storage tank (41). A water outlet (45) is opened on the circumferential surface of the water storage tank (41). A water pipe (46) is fixedly connected to the inner wall of the water outlet (45). The circumferential surface of the water pipe (46) is fixedly connected to the circumferential surface of the tower body (2). A spray strip (47) is fixedly connected to one end of the water pipe (46).

6. The alkaline spray tower for waste gas treatment according to claim 5, characterized in that, The water storage tank (41) has an inlet (48) at the top, and a plug (49) is threaded onto the top of the inlet (48).

7. The alkaline spray tower for waste gas treatment according to claim 6, characterized in that, The circumferential surface of the rotating shaft (44) is provided with a sliding groove (410), and a slider (411) is slidably connected to the inner wall of the sliding groove (410). A connecting plate (412) is fixedly connected to the side of the slider (411).

8. The alkaline spray tower for waste gas treatment according to claim 7, characterized in that, A stirring rod (413) is fixedly inserted through the top of the connecting plate (412), and a pusher (414) is fixedly connected inside the water storage tank (41).

9. The alkaline spray tower for waste gas treatment according to claim 8, characterized in that, A water outlet pipe (415) is fixedly inserted through the circumference of the material conveying pipe (38), and a drain valve (416) is provided on the circumference of the water pipe (46).

10. An alkaline spray tower for waste gas treatment according to claim 9, characterized in that, The circumferential surface of the spray bar (47) is located inside the tower body (2). The number of the chute (410), slider (411), connecting plate (412), stirring rod (413) and push column (414) is set to several, and they are arranged in a circumferential array along the circumferential surface of the rotating shaft (44). The shape of the push column (414) is set to cylindrical, and the circumferential surface of the push column (414) is inclined.

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