An efficient spray tower

Abstract

The present invention relates to the technical field of waste gas purification, and specifically relates to an efficient spray tower. An efficient spray tower includes a tower body. Inside the tower body, a flow guiding device, a first reaction chamber, a second reaction chamber, and a demisting device are sequentially arranged from bottom to top. The flow guiding device and the demisting device are movably connected to the inner wall of the tower body. An air inlet is provided on one side of the bottom of the tower body, and an air outlet is provided at the top of the tower body. The purpose of the present invention is to improve the absorption efficiency of the spray tower.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas purification, and specifically to an efficient spray tower. Background Art

[0002] In China's pharmaceutical manufacturing industry, volatile organic compounds can be generated in the processes of extraction, refining, distillation, storage and transportation, etc. In addition, the components in the waste gas, such as pharmaceutical dust particles, fermentation tail gas, acid-base waste gas, and odor, are complex, which causes certain difficulties in the treatment of process waste gas.

[0003] In environmental engineering, the absorption method is one of the important means to control air pollutants. The liquid absorption method uses the principle of similar solubility between the liquid absorbent and inorganic and organic waste gases to achieve the purpose of treating organic waste gases. This method can not only treat a large amount of gas pollutants, but also absorb and regenerate some air pollutants to obtain enriched organic matter, which can be sold externally or recycled in the production unit after regeneration or refining. The technology of treating gas pollutants by the absorption method is mature, with rich design and operation experience and strong applicability. Therefore, it is widely used in air pollution control. This technology generally uses low-volatile or non-volatile liquids as absorbents or acid-washing and neutralizing absorbents, and uses the differences in the solubility or chemical reaction characteristics of various components in the waste gas in the absorbent through the absorption device to absorb the harmful components, so as to achieve the purpose of purifying the waste gas. The absorption method separates the gas mixture by the repeated action of the absorbent through the different solubilities and chemical reactions of different components in the gas mixture in a specific absorbent.

[0004] Generally, the waste gas enters the absorption spray tower from the bottom of the tower and is discharged from the top. The circulating pump sends the absorbent to the liquid distributor at the top of the tower and sprays it onto the surface of the packing. In the packing layer, the absorbent forms a liquid film due to the action of the packing, and the liquid film comes into full contact with the gas rising from the bottom up, thereby removing the pollutants in the gas. The gas-liquid counter-phase exchange method is adopted to increase the gas-liquid contact mass transfer and improve the absorption efficiency.

[0005] However, in the existing absorption towers for VOCs treatment, the distribution of the spray liquid is uneven. Affected by the wind speed, the spray liquid is inclined or rolled back, and high-pressure spraying must be formed through pressurization; the high-pressure spraying will cause scouring and impact on the packing layer, resulting in offset or gully, thus causing uneven gas-liquid contact time and affecting the absorption efficiency; a large spray volume will cause obvious gas-liquid entrainment and serious loss of the absorbent; when the spray volume increases, the pressure increases, which directly leads to an increase in the installed power of the circulating pump and an increase in the energy consumption of the system operation. Summary of the Invention

[0006] In view of this, the present invention provides an efficient spray tower, aiming to improve the absorption efficiency of the spray tower.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] An efficient spray tower, comprising a tower body, in which a flow guiding device, a first reaction chamber, a second reaction chamber and a demisting device are sequentially arranged from bottom to top. The flow guiding device and the demisting device are movably connected to the inner wall of the tower body. An air inlet is provided on one side of the bottom of the tower body, and an air outlet is provided at the top of the tower body.

[0009] The flow guiding device includes flow guiding vanes, a flow guiding cover cylinder and a flow guiding inner cylinder. The flow guiding cover cylinder is sleeved outside the flow guiding inner cylinder. The flow guiding vanes are evenly arranged between the flow guiding cover cylinder and the flow guiding inner cylinder. One end of the flow guiding vanes is arranged at an acute angle with the flow guiding inner cylinder.

[0010] The first reaction chamber includes a first spraying device, a first disc distributor and a first packing layer. The first spraying device includes a first spraying pipe and a plurality of first spray heads, and the plurality of first spray heads are installed above the first disc distributor correspondingly.

[0011] The second reaction chamber includes a second spraying device, a second disc distributor and a second packing layer. The second spraying device includes a second spraying pipe and a plurality of second spray heads, and the plurality of second spray heads are installed above the second disc distributor correspondingly.

[0012] The demisting device includes swirl vanes, a blind plate, a demisting cover cylinder and a demisting inner cylinder. The demisting cover cylinder is sleeved outside the demisting inner cylinder. The swirl vanes are evenly arranged between the demisting cover cylinder and the demisting inner cylinder. One end of the swirl vanes is arranged at an acute angle with the demisting inner cylinder. The blind plate is arranged at the bottom of the demisting inner cylinder.

[0013] Furthermore, the first disc distributor includes a laying device and a reaction liquid distribution device; the laying device includes a support frame and a plurality of support beams. The support frame is fixedly arranged at the central position of the cross section of the tower body, and the plurality of support beams are evenly arranged on the support frame. The reaction liquid distribution device is movably connected to the tower body through the support beams.

[0014] The reaction liquid distribution device includes a liquid collecting tank, a first pressure dividing tank, a drainage pipe, a riser pipe and a second pressure dividing tank. The bottom of the liquid collecting tank is designed with an obtuse angle. The first pressure dividing tank is correspondingly arranged below the liquid collecting tank, and both ends of the first pressure dividing tank are arranged below both ends of the liquid collecting tank. The first pressure dividing tank is a groove with a horizontal bottom. The riser pipes are arranged in an even number and installed at both bottom ends of the first pressure dividing tank. The drainage pipe is sleeved around the riser pipe. The bottom of the first pressure dividing tank is provided with a first diversion hole corresponding to the outer diameter of the drainage pipe. A plurality of second diversion holes are opened on the drainage pipe. The second pressure dividing tank is arranged outside the bottom of the drainage pipe. The second pressure dividing tank is a groove with a horizontal bottom, and a clamping device is arranged at the end away from the drainage pipe. The two reaction liquid distribution devices are movably connected through the clamping device of the second pressure dividing tank, and a plurality of third diversion holes are arranged at the bottom of the second pressure dividing tank.

[0015] Further, the clamping device includes a U-shaped clamping groove, a C-shaped clamping groove and a wedge block. The U-shaped clamping groove is arranged at the bottom of the second pressure dividing tank on the side away from the drainage pipe, and the C-shaped clamping groove is arranged at the bottom of the second pressure dividing tank on the other side away from the drainage pipe. The two reaction liquid distribution devices are combined and connected by the U-shaped clamping groove and the C-shaped clamping groove, and the wedge block is inserted into the remaining space of the C-shaped clamping groove after the two reaction liquid distribution devices are clamped to wedge and fix the connection part of the two reaction liquid distribution devices. The wedge block and the remaining space of the C-shaped clamping groove are connected by clearance fit or interference fit.

[0016] Further, the structures of the second disc distributor and the first disc distributor are the same.

[0017] Further, an overflow tank is further included, and the overflow tank is arranged inside the demisting hood cylinder.

[0018] Further, a liquid accumulation tank is further included. The liquid accumulation tank is arranged at the bottom of the tower body, and an instrument installation hole position is arranged on the tower body corresponding to the liquid accumulation tank.

[0019] Further, a water inlet is arranged below the air inlet, and a water outlet is arranged below the water inlet.

[0020] Further, a maintenance opening is arranged on the tower body, and the maintenance opening is correspondingly arranged above the demisting device, and a maintenance door is correspondingly installed on the maintenance opening.

[0021] Further, a plurality of observation ports are further included, and the observation ports are respectively arranged above the first reaction chamber, the second reaction chamber and the liquid accumulation tank; a plurality of observation doors are correspondingly installed on the observation ports.

[0022] Furthermore, both the inspection door and the observation door are made of visible materials.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. By setting the diversion device, the present invention prolongs the action time of the wind, increases the reaction time of pollutants in the waste gas, and the reaction time increases from 2 seconds to 6 seconds, and the action effect is increased by 3 to 4 times; by setting the demisting device, it prevents small-volume droplets from flowing out of the spray tower with the air flow and prevents pollutants from leaking into the atmosphere. By setting the first reaction chamber and the second reaction chamber, the pollutants in the waste gas are reacted multiple times to complete the absorption; by setting a blind plate in the demisting device, small-volume liquids splashed can be stored.

[0025] 2. The design of the first disk distributor and the second disk distributor of the present invention adopts a layout device and a reaction liquid distribution device. The separate settings of the layout device, the reaction liquid distribution device and the spraying device make the disk distributor convenient to disassemble, install and replace; the layout device includes a support frame and a plurality of support beams. The support frame is fixedly arranged at the center position of the cross-section of the spray tower, and the plurality of support beams are evenly arranged on the support frame. This setting is beneficial to maintaining the overall balance of the disk distributor so that the disk distributor is stably arranged in the spray tower; the reaction liquid distribution device is movably connected to the spray tower through the support beam. This setting provides convenience for the workers to inspect, disassemble and replace the reaction liquid distribution device; the bottom of the liquid collection tank is designed with an obtuse angle, which increases the contact area between the liquid collection tank and the reaction liquid, increases the collection rate, so that the reaction liquid sprayed from the spray head can be effectively buffered and shunted. The liquid collection tank plays a role in changing the air flow direction and guiding the air flow, avoiding directly blowing the demisting device to cause secondary entrainment. At the same time, the blocking and impact effect of the liquid collection tank causes a sharp deceleration of the air flow, and the clamped liquid falls by impact and collection, reducing the gas-liquid entrainment amount, and the demisting efficiency is better; the first pressure dividing tank is correspondingly arranged below the liquid collection tank, and both ends of the first pressure dividing tank are arranged below both ends of the liquid collection tank. This setting enables the reaction liquid to fully flow from the liquid collection tank into the first pressure dividing tank; the first pressure dividing tank is a groove with a horizontal bottom, which increases the collection rate of the first pressure dividing tank and avoids the interruption of the reaction liquid during the shunting process; the riser pipes are arranged in an even number and are installed at both ends of the bottom of the first pressure dividing tank. The drainage pipes are sleeved outside the riser pipes. This setting not only makes the structure between adjacent two drainage pipes more compact but also increases the utilization rate of the distributed liquid; the bottom of the first pressure dividing tank is provided with first shunt holes corresponding to the outer diameter of the drainage pipes, and a plurality of second shunt holes are opened on the drainage pipes. The second pressure dividing tank is arranged outside the bottom of the drainage pipes, and a plurality of third shunt holes are provided at the bottom of the second pressure dividing tank. This setting enables the reaction liquid to be shunted at multiple levels in the reaction liquid distribution device, so that the reaction liquid entering the packing layer is more balanced and sufficient.

[0026] 3. The first disk distributor and the second disk distributor in this utility model have a new clamping device including a U-shaped card slot, a C-shaped card slot, and a wedge block. The U-shaped card slot is provided at the bottom of the second pressure-dividing slot on the side away from the drainage pipe, and the C-shaped card slot is provided at the bottom of the second pressure-dividing slot on the other side away from the drainage pipe. The two reaction liquid distribution devices are combined and connected by the U-shaped card slot and the C-shaped card slot. Compared with the previous bolt connection, this clamping device has the advantages of convenient disassembly and strong fixation, and at the same time avoids the disadvantage of easy rust and damage of the bolt connection. It is convenient for the workers to assemble a suitable distribution liquid distribution device according to the actual shape requirements, and also provides convenience for the replacement of damaged components. The wedge block is inserted into the remaining space of the C-shaped card slot after the two reaction liquid distribution devices are clamped to wedge and fix the connection part of the two reaction liquid distribution devices. This setting makes the clamping of the two reaction liquid distribution devices more stable. The wedge block and the remaining space of the C-shaped card slot are connected by clearance fit or interference fit. This setting makes the cooperation between the wedge block and the C-shaped card slot stable and avoids the relative sliding of the two reaction liquid distribution devices during use.

[0027] 4. The demisting device in the present invention is provided with an overflow tank. Its function is that when the air flow passes through the gap between the plate blades, it becomes a rotating air flow. Among them, the liquid droplets, under the action of inertia, are ejected at a certain elevation angle to make a spiral movement and are thrown to the outside, gathering and flowing into the overflow tank to achieve the purpose of defoaming. The defoaming efficiency can reach 90% - 99%. Brief Description of the Drawings

[0028] Figure 1 is a structural schematic diagram of the present invention;

[0029] Figure 2 is an external view schematic diagram of the present invention;

[0030] Figure 3 is a structural schematic diagram of the reaction liquid distribution device of the disk distributor in the present invention;

[0031] Figure 4 is the present invention Figure 3 partial enlarged view of part A in;

[0032] Figure 5 is a structural schematic diagram of the first spray pipe in the present invention;

[0033] Figure 6 is a structural schematic diagram of the demisting device in the present invention;

[0034] Figure 7 is a structural schematic diagram of the diversion device in the present invention.

[0035] Reference numerals: 1: tower body, 2: maintenance opening, 3: observation opening, 4: air inlet, 5: liquid collecting tank, 6: first pressure dividing tank, 7: drainage pipe, 8: riser pipe, 9: second pressure dividing tank, 10: first diversion hole, 11: second diversion hole, 12: third diversion hole, 13: U-shaped card slot, 14: C-shaped card slot, 15: wedge block, 16: air outlet, 17: horizontal rib, 18: flow guiding device, 19: first filling layer, 20: first disc distributor, 21: first spray pipe, 22: first spray pipe nozzle, 23: second filling layer, 24: second disc distributor, 25: second spray pipe, 26: second spray pipe nozzle, 27: demisting device, 28: blind plate, 29: swirl vane, 30: demisting hood barrel, 31: demisting inner cylinder, 32: flow guiding vane, 33: flow guiding hood barrel, 34: flow guiding inner cylinder, A: partial enlarged view of the clamping device. Detailed implementation manners

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 invention 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 therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Such as Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7As shown in the figure, an efficient spray tower includes a tower body. Inside the tower body, a flow guiding device, a first reaction chamber, a second reaction chamber, and a demisting device are sequentially arranged from bottom to top. The flow guiding device and the demisting device are movably connected to the inner wall of the tower body. An air inlet is provided on one side of the bottom of the tower body, and an air outlet is provided on the top of the tower body.

[0040] The flow guiding device includes flow guiding vanes, a flow guiding cover cylinder, and a flow guiding ring plate. The flow guiding cover cylinder is sleeved outside the flow guiding inner cylinder. The flow guiding vanes are evenly arranged between the flow guiding cover cylinder and the flow guiding inner cylinder. One end of the flow guiding vanes is arranged at an acute angle with the flow guiding inner cylinder.

[0041] The first reaction chamber includes a first spraying device, a first disk distributor, and a first packing layer. The first spraying device includes a first spraying pipe and a plurality of first spray heads. The plurality of first spray heads are installed corresponding to the first disk distributor.

[0042] The second reaction chamber includes a second spraying device, a second disk distributor, and a second packing layer. The second spraying device includes a second spraying pipe and a plurality of second spray heads. The plurality of second spray heads are installed corresponding to the second disk distributor.

[0043] The demisting device includes swirl vanes, a blind plate, a demisting cover cylinder, and a demisting inner cylinder. The demisting cover cylinder is sleeved outside the demisting inner cylinder. The swirl vanes are evenly arranged between the demisting cover cylinder and the demisting inner cylinder. One end of the swirl vanes is arranged at an acute angle with the demisting inner cylinder. The blind plate is arranged at the bottom of the demisting inner cylinder.

[0044] In the present invention, by setting the flow guiding device, the acting time of the wind is prolonged, and the reaction time of the waste gas is increased. The reaction time is increased from 2 seconds to 6 seconds, and the acting effect is improved by three to four times. By setting the demisting device, small-volume droplets are prevented from flowing out of the spray tower with the air flow, and pollutants are prevented from leaking into the atmosphere. By setting the first reaction chamber and the second reaction chamber, the waste gas is subjected to multiple reactions to complete absorption. By setting the blind plate in the demisting device, the splashed small-volume liquid can be stored.

[0045] As Figure 3 and Figure 4 shown, the first disk liquid distributor includes a distribution device, a reaction liquid distribution device, and a spraying device. The distribution device includes a support frame and a plurality of support beams. The support frame is fixedly arranged at the central position of the cross section of the spray tower. The plurality of support beams are evenly arranged on the support frame. The reaction liquid distribution device is movably connected to the inside of the spray tower through the support beams.

[0046] The reaction liquid distribution device includes a liquid collecting tank, a first pressure dividing tank, a drainage pipe, a riser pipe, and a second pressure dividing tank. The bottom of the liquid collecting tank is designed with an obtuse angle. The first pressure dividing tank is correspondingly arranged below the liquid collecting tank, and both ends of the first pressure dividing tank are arranged below both ends of the liquid collecting tank. The first pressure dividing tank is a groove with a horizontal bottom. The riser pipes are arranged in an even number and installed at both bottom ends of the first pressure dividing tank. The drainage pipe is sleeved around the riser pipe. The bottom of the first pressure dividing tank is provided with a first diversion hole corresponding to the outer diameter of the drainage pipe. A plurality of second diversion holes are formed in the drainage pipe. The second pressure dividing tank is arranged outside the bottom of the drainage pipe. The second pressure dividing tank is a groove with a horizontal bottom, and a clamping device is arranged at the end away from the drainage pipe. The two reaction liquid distribution devices are movably connected through the clamping device of the second pressure dividing tank. A plurality of third diversion holes are provided at the bottom of the second pressure dividing tank;

[0047] The spraying device includes a liquid inlet pipe and a spray head. The liquid inlet pipe is erected above the reaction liquid distribution device, and a plurality of spray heads are uniformly arranged on the liquid inlet pipe corresponding to the liquid collecting tank.

[0048] This utility model is provided with a first disk distributor, which includes a layout device, a reaction liquid distribution device, and a spraying device. The separate settings of the layout device, the reaction liquid distribution device, and the spraying device facilitate the disassembly, installation, and replacement of the disk distributor. The layout device includes a support frame and multiple support beams. The support frame is fixedly arranged at the center position of the cross-section of the spray tower, and the multiple support beams are evenly arranged on the support frame. This setting is beneficial to maintaining the overall balance of the disk distributor, so that the disk distributor is stably arranged in the spray tower. The reaction liquid distribution device is movably connected to the spray tower through the support beam, which provides convenience for workers to inspect, disassemble, and replace the reaction liquid distribution device. The bottom of the liquid collecting tank is designed with an obtuse angle, which increases the contact area between the liquid collecting tank and the reaction liquid, improves the collection rate, and enables the reaction liquid sprayed from the spray head to be effectively buffered and shunted. The liquid collecting tank plays a role in changing the air flow direction and guiding the air flow, avoiding secondary entrainment caused by directly blowing the demisting device. At the same time, the blocking and impact effect of the liquid collecting tank causes a sharp deceleration of the air flow, and the entrained liquid falls down through impact and collection, reducing the gas-liquid entrainment amount and achieving better demisting efficiency. The first pressure dividing tank is correspondingly arranged below the liquid collecting tank, and both ends of the first pressure dividing tank are arranged below both ends of the liquid collecting tank. This setting enables the reaction liquid to fully flow from the liquid collecting tank into the first pressure dividing tank. The first pressure dividing tank is a groove with a horizontal bottom, which increases the collection rate of the first pressure dividing tank and avoids the interruption of the reaction liquid during the shunting process. The riser pipes are arranged in an even number and installed at both bottom ends of the first pressure dividing tank. The drain pipes are sleeved outside the riser pipes. This setting not only makes the structure between adjacent drain pipes more compact but also increases the utilization rate of the distributed liquid. The bottom of the first pressure dividing tank is provided with first shunt holes corresponding to the outer diameter of the drain pipes, and multiple second shunt holes are opened on the drain pipes. The second pressure dividing tank is arranged outside the bottom of the drain pipes, and multiple third shunt holes are provided at the bottom of the second pressure dividing tank. This setting enables the reaction liquid to be shunted at multiple levels in the reaction liquid distribution device, so that the reaction liquid entering the packing layer is more balanced and sufficient.

[0049] Such as Figure 4As shown in the figure, the clamping device includes a U-shaped card slot, a C-shaped card slot and a wedge block. The U-shaped card slot is arranged at the bottom of the second pressure-dividing slot on the side away from the drainage pipe, and the C-shaped card slot is arranged at the bottom of the second pressure-dividing slot on the other side away from the drainage pipe. The two reaction liquid distribution devices are combined and connected by the U-shaped card slot and the C-shaped card slot. The wedge block is inserted into the remaining space of the C-shaped card slot after the two reaction liquid distribution devices are clamped to wedge and fix the connection part of the two reaction liquid distribution devices. The wedge block and the remaining space of the C-shaped card slot are connected by clearance fit or interference fit. The disk distributor in this utility model has a new clamping device including a U-shaped card slot, a C-shaped card slot and a wedge block. The U-shaped card slot is arranged at the bottom of the second pressure-dividing slot on the side away from the drainage pipe, and the C-shaped card slot is arranged at the bottom of the second pressure-dividing slot on the other side away from the drainage pipe. The two reaction liquid distribution devices are combined and connected by the U-shaped card slot and the C-shaped card slot. Compared with the previous bolt connection, this clamping device has the advantages of convenient disassembly and strong fixing, and at the same time avoids the disadvantages of easy rust and damage of the bolt connection, which facilitates the workers to assemble the appropriate distribution liquid distribution device according to the actual shape requirements and also provides convenience for the replacement of damaged components. The wedge block is inserted into the remaining space of the C-shaped card slot after the two reaction liquid distribution devices are clamped to wedge and fix the connection part of the two reaction liquid distribution devices. This setting makes the clamping of the two reaction liquid distribution devices more stable. The wedge block and the remaining space of the C-shaped card slot are connected by clearance fit or interference fit. This setting makes the cooperation between the wedge block and the C-shaped card slot stable and avoids the relative sliding of the two reaction liquid distribution devices during use.

[0050] The structures of the second disk distributor and the first disk distributor are the same and will not be described in detail here.

[0051] As Figure 6 shown, it further includes an overflow tank. The overflow tank is located inside the demister cylinder. Its function is that when the airflow passes through the gap between the plate blades, it becomes a rotating airflow. Among them, the liquid droplets are ejected at a certain elevation angle under the action of inertia and do a spiral motion and are thrown to the outside, gathering and flowing into the overflow tank to achieve the purpose of defoaming. The defoaming efficiency can reach 90% - 99%.

[0052] As Figure 1 shown, it further includes a liquid accumulation tank. The liquid accumulation tank is arranged at the bottom of the tower body. The liquid accumulation tank is preset with installation instrument holes for facilitating the installation of various instruments to monitor the data inside the spray tower in real time.

[0053] In the present invention, it further includes a water inlet and a water outlet. The water inlet is arranged below the air inlet, and the water outlet is arranged below the water inlet.

[0054] As Figure 1 、 Figure 2As shown, it also includes a maintenance opening which is provided on the tower body and is correspondingly arranged above the demisting device. A maintenance door is correspondingly installed at the maintenance opening for convenient equipment maintenance.

[0055] As Figure 1 , Figure 2 shown, it also includes a plurality of observation openings which are respectively arranged above the first reaction chamber, the second reaction chamber and the liquid accumulation tank; a plurality of observation doors are correspondingly installed at the observation openings for the purpose of conveniently checking the absorption and reaction of the waste gas.

[0056] As Figure 2 shown, both the maintenance door and the observation door are made of visible materials for convenient observation.

[0057] The specific operation principle is as follows:

[0058] When using this spray tower, the first disk distributor and the second disk distributor should be set up first. First, fix the support frame with evenly distributed support beams at the central position of the cross-section of the spray tower, then movably connect the clamped multi-group reaction liquid distribution devices with the support beams, and finally place the spray device above the reaction liquid distribution devices; turn on the spray device and introduce the reaction liquid into the liquid inlet pipe of the spray device. The reaction liquid gradually sprays down through the spray heads and is collected by the liquid collecting tank and flows down under the influence of gravity through the first diversion holes into the diversion pipes. A part of the reaction liquid in the diversion pipes flows down under the influence of gravity and seeps into the packing layer, and another part of the reaction liquid flows out from the second diversion and enters the second pressure dividing tank along the outer wall of the diversion pipe, and finally flows down through the third diversion holes and seeps into the packing layer; the waste gas to be treated reacts with the packing layer fully wetted by the reaction liquid and then flows through the riser pipe from bottom to top to enter the next reaction stage; the reaction liquid undergoes multi-stage diversion and buffering on the way from the spray device to seep into the packing layer, so as to achieve the effects of being uniform, having small impact force and small loss when seeping into the packing layer.

[0059] In use, the waste gas is collected through a pipeline and pumped into the spray tower by a fan. The waste gas enters the interior of the tower body from the air inlet. First, it passes through a diversion device to disperse the waste gas, delay the passing speed of the waste gas in the tower, and increase the reaction time. Then, the waste gas enters the first reaction chamber. The first packing layer in the first reaction chamber removes large-particle impurities. The gas passing through the first packing layer contacts the absorption liquid sprayed by the first spray layer from bottom to top in a countercurrent manner. The absorption liquid that fully absorbs pollutants drains downward under the influence of gravity. The waste gas that has absorbed pollutants enters the second reaction chamber. The gas entering the second reaction chamber is further filtered by the packing layer to remove impurities. The gas passing through the packing layer contacts the absorption liquid sprayed by the second spray layer from bottom to top in a countercurrent manner. The absorption liquid that fully absorbs pollutants drains downward under the influence of gravity. The purified gas that has absorbed pollutants passes through a demisting device to remove droplets and then is discharged from the air outlet of the tower body. Since the waste gas passes through two spray absorptions in the tower successively, the gas-liquid contact area can be effectively increased, the spray absorption efficiency can be improved, and the polluting gases in the waste gas can be effectively removed to meet the discharge standards.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An efficient spray tower, characterized in that, It includes a tower body, in which a flow guiding device, a first reaction chamber, a second reaction chamber and a demisting device are sequentially arranged from bottom to top. The flow guiding device and the demisting device are movably connected to the inner wall of the tower body. An air inlet is provided on one side of the bottom of the tower body, and an air outlet is provided on the top of the tower body. The flow guiding device includes flow guiding vanes, a flow guiding cover cylinder and a flow guiding inner cylinder. The flow guiding cover cylinder is sleeved outside the flow guiding inner cylinder. The flow guiding vanes are evenly arranged between the flow guiding cover cylinder and the flow guiding inner cylinder. One end of the flow guiding vane is arranged at an acute angle with the flow guiding inner cylinder. The first reaction chamber includes a first spraying device, a first disc distributor and a first packing layer. The first spraying device includes a first spraying pipe and a plurality of first spray heads. The plurality of first spray heads are installed corresponding to the upper part of the first disc distributor. The second reaction chamber includes a second spraying device, a second disc distributor and a second packing layer. The second spraying device includes a second spraying pipe and a plurality of second spray heads. The plurality of second spray heads are installed corresponding to the upper part of the second disc distributor. The demisting device includes swirl vanes, a blind plate, a demisting cover cylinder and a demisting inner cylinder. The demisting cover cylinder is sleeved outside the demisting inner cylinder. The swirl vanes are evenly arranged between the demisting cover cylinder and the demisting inner cylinder. One end of the swirl vane is arranged at an acute angle with the demisting inner cylinder. The blind plate is arranged at the bottom of the demisting inner cylinder. The first disc distributor includes a layout device and a reaction liquid distribution device. The layout device includes a support frame and a plurality of support beams. The support frame is fixedly arranged at the central position of the cross section of the tower body. The plurality of support beams are evenly arranged on the support frame. The reaction liquid distribution device is movably connected to the tower body through the support beams. The reaction liquid distribution device includes a liquid collecting tank, a first pressure dividing tank, a drainage pipe, a riser pipe and a second pressure dividing tank. The bottom of the liquid collecting tank is designed with an obtuse angle. The first pressure dividing tank is correspondingly arranged below the liquid collecting tank, and both ends of the first pressure dividing tank are arranged below both ends of the liquid collecting tank. The first pressure dividing tank is a groove with a horizontal bottom. The riser pipes are arranged in an even number and installed at both bottom ends of the first pressure dividing tank. The drainage pipe is sleeved outside the riser pipe. The first pressure dividing tank is provided with a first diversion hole corresponding to the outer diameter of the drainage pipe. A plurality of second diversion holes are opened on the drainage pipe. The second pressure dividing tank is arranged outside the bottom of the drainage pipe. The second pressure dividing tank is a groove with a horizontal bottom. A clamping device is arranged at the end far from the drainage pipe. The two reaction liquid distribution devices are movably connected through the clamping device of the second pressure dividing tank. A plurality of third diversion holes are provided at the bottom of the second pressure dividing tank. Among them, the second disc distributor has the same structure as the first disc distributor.

2. The high-efficiency spray tower according to claim 1, wherein The clamping device includes a U-shaped card slot, a C-shaped card slot and a wedge block. The U-shaped card slot is arranged at the bottom of the second pressure-dividing groove on the side far from the drainage pipe, and the C-shaped card slot is arranged at the bottom of the second pressure-dividing groove on the other side far from the drainage pipe. The two reaction liquid distribution devices are combined and connected by the U-shaped card slot and the C-shaped card slot, and the wedge block is inserted into the remaining space of the C-shaped card slot after the two reaction liquid distribution devices are clamped to wedge and fix the connection part of the two reaction liquid distribution devices. The wedge block and the remaining space of the C-shaped card slot are connected by clearance fit or interference fit.

3. An efficient spray tower according to claim 1, characterized in that, It further includes an overflow tank, and the overflow tank is arranged inside the demisting hood cylinder.

4. An efficient spray tower according to claim 1, characterized in that, It further includes a liquid accumulation tank. The liquid accumulation tank is arranged at the bottom of the tower body, and an instrument installation hole position corresponding to the liquid accumulation tank is arranged on the tower body.

5. An efficient spray tower according to claim 1, characterized in that, An inlet is arranged below the air inlet, and an outlet is arranged below the inlet.

6. An efficient spray tower according to claim 4, characterized in that, An inspection opening is arranged on the tower body, and the inspection opening is correspondingly arranged above the demisting device. An inspection door is correspondingly installed on the inspection opening.

7. An efficient spray tower according to claim 6, characterized in that, It further includes a plurality of observation openings, and the observation openings are respectively arranged above the first reaction chamber, the second reaction chamber and the liquid accumulation tank; a plurality of observation doors are correspondingly installed on the observation openings.

8. An efficient spray tower according to claim 7, characterized in that, Both the inspection door and the observation door are made of visible materials.

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