Efficient washing tower and washing method

Abstract

The invention belongs to the technical field of waste gas treatment, and particularly relates to an efficient washing tower and a washing method.The efficient washing tower comprises a tower body, a backflow assembly, a filtering assembly, a material changing assembly and a spraying assembly.By arranging the filtering assembly, waste gas can be effectively filtered, and the purification effect of the waste gas is improved; by arranging the material changing assembly, the filler can be regularly and rapidly replaced, workers do not need to enter the tower body for operation, and time and labor are saved, and high efficiency and convenience are achieved; by arranging the spraying assembly to be matched with the heat exchange pipe, waste heat in waste gas can be recycled, neutralizing liquid flowing through the heat exchange pipe is heated, the neutralizing and filtering effect of the neutralizing liquid and the waste gas is accelerated during spraying and neutralizing, and therefore the neutralizing and filtering effect of the waste gas is improved; and by arranging the backflow assembly, the waste gas which does not meet the emission standard can be subjected to backflow treatment until the neutralized and filtered gas meets the emission standard, and the environmental protection property of waste gas emission is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and particularly to an efficient scrubbing tower and a scrubbing method. Background Art

[0002] In the production process of chemical enterprises, a large amount of acidic or alkaline waste gas is usually generated. If such waste gas is directly discharged into the atmospheric environment without purification treatment, it will cause serious damage to the ecological environment. As an innovative gas purification and treatment equipment, the scrubbing tower is widely used in the pretreatment process of industrial waste gas purification, dust removal and other technological processes.

[0003] In the specific working process, after the waste gas enters the scrubbing tower, it first realizes preliminary filtration through the packing layer. Subsequently, the waste gas enters the spraying area and fully contacts with the neutralizing liquid sprayed in the tower. During this process, the pollutants in the waste gas are effectively absorbed by the liquid, and at the same time, the acid-base substances in the waste gas are neutralized and filtered. The liquid after absorbing the pollutants is collected in the liquid collection tank at the bottom of the tower by means of the power action of the pump or natural flow. Then, through the supporting treatment equipment, the pollutants in the liquid are decomposed or converted into harmless substances.

[0004] When using the neutralizing liquid to wash and neutralize the waste gas, the increase in temperature can accelerate the rate of the acid-base neutralization reaction. Taking the neutralization reaction of acidic waste gas (such as HCl (hydrogen chloride)) and NaOH (sodium hydroxide) solution as an example, in the temperature range of 20 - 50 °C, for every 10 °C increase in temperature, the reaction rate constant can be increased by about 2 - 3 times.

[0005] See Figure 1 shows a common waste gas scrubbing tower structure on the current market. The waste gas inlet of this scrubbing tower is located at the bottom of the tower body. After the waste gas enters, it is first filtered by the packing in the packing layer, and then enters the water spraying layer to fully mix with the sprayed neutralizing liquid to achieve the absorption and neutralization effect. After passing the detection, the clean gas is discharged. However, in actual operation, as time goes by, the packing in the packing layer needs to be replaced regularly. Since the packing is located inside the scrubbing tower, the replacement operation is extremely inconvenient, which not only significantly reduces the operating efficiency of the scrubbing tower, but also this structure cannot effectively utilize the waste heat in the waste gas. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: In order to solve the technical problems in the prior art that the packing in the packing layer is not easy to replace and the waste heat in the waste gas cannot be recovered and utilized, the present invention provides an efficient scrubbing tower and a scrubbing method, which are convenient for replacing the packing and can use the waste heat of the waste gas to heat the sprayed neutralizing liquid, which can not only reduce the waste of energy, but also enhance the washing and purification effect.

[0007] The technical solution adopted by the present invention to solve its technical problems is: an efficient scrubbing tower, which includes: a tower body, a first one-way valve is arranged inside the tower body, and the first one-way valve divides the inner cavity of the tower body into a detection cavity and a neutralization reaction cavity along the up and down directions. A first exhaust port and a second exhaust port are opened at the top of the tower body, and both the first exhaust port and the second exhaust port are communicated with the detection cavity;

[0008] A reflux assembly, the reflux assembly is arranged outside the tower body, one end of the reflux assembly is communicated with the second exhaust port, and the other end of the reflux assembly is communicated with the neutralization reaction cavity;

[0009] A filtering assembly, the filtering assembly includes a smoke inlet pipe and a packing cylinder. The smoke inlet pipe is inserted into the neutralization reaction cavity from the bottom of the tower body. An exhaust gas inlet is opened at one end of the smoke inlet pipe, and the other end of the smoke inlet pipe is unidirectionally communicated with the packing cylinder. The packing cylinder is arranged in the neutralization reaction cavity and is communicated with the neutralization reaction cavity;

[0010] A material changing assembly, the material changing assembly includes a feeding member and a discharging member. The feeding member is communicated with the top of the packing cylinder and conveys new packing into the packing cylinder from outside the tower body. The discharging member is communicated with the bottom of the packing cylinder and conveys the packing to be replaced out of the tower body from the packing cylinder;

[0011] A spraying assembly, the spraying assembly includes a spraying member, a heat exchange pipe and a liquid feeding member. The spraying member and the heat exchange pipe are both arranged in the neutralization reaction cavity. The spraying member is sleeved outside the packing cylinder and is used to spray neutralizing liquid into the neutralization reaction cavity. The heat exchange pipe is sleeved outside the smoke inlet pipe. One end of the heat exchange pipe is communicated with the spraying member, and the other end of the heat exchange pipe is communicated with the liquid feeding member. The liquid feeding member is arranged outside the tower body and is used to convey neutralizing liquid into the heat exchange pipe. The heat exchange pipe is used to heat the neutralizing liquid. The specific technical effects are: by setting the filtering assembly, the exhaust gas can be effectively filtered, and the purification effect of the exhaust gas can be improved; by setting the material changing assembly, the packing can be replaced regularly and quickly, without the need for staff to enter the tower body for operation, which is time-saving, labor-saving and highly efficient and convenient; by setting the spraying assembly in cooperation with the heat exchange pipe, the waste heat in the exhaust gas can be recovered and utilized, and the neutralizing liquid flowing through the heat exchange pipe can be heated, so that the neutralization and filtration effect with the exhaust gas is accelerated during spraying and neutralization, thereby improving the neutralization and filtration effect of the exhaust gas; by setting the reflux assembly, the exhaust gas that does not meet the emission standard can be refluxed until the gas after neutralization and filtration meets the emission standard, ensuring the environmental protection of the exhaust gas emission; by using the first one-way valve to divide the inner cavity of the tower body into a detection cavity and a neutralization reaction cavity along the up and down directions, it can prevent the exhaust gas after neutralization and filtration from flowing back into the neutralization reaction cavity.

[0012] Further, the spraying member includes a plurality of connecting pipes and a plurality of spraying pipes. The plurality of connecting pipes are arranged in a circular array. Each spraying pipe has an annular structure, and a plurality of spraying holes are formed in each spraying pipe. The plurality of spraying pipes are arranged at intervals in sequence along the axial direction of the connecting pipe and are connected to the connecting pipe. One end of the heat exchange pipe is communicated with any one of the connecting pipes.

[0013] Further, the heat exchange pipe is spirally arranged outside the smoke inlet pipe. The specific technical effect is that the heat exchange pipe is tightly wound around the outside of the smoke inlet pipe in a spiral structure. This design enables the heat carried by the waste gas passing through the smoke inlet pipe to be transferred to the neutralizing liquid in the heat exchange pipe more efficiently and fully, thereby effectively heating the neutralizing liquid and improving the reaction rate and purification effect in the subsequent spraying and neutralizing process.

[0014] Further, the liquid feeding member includes:

[0015] A neutralizing liquid tank installed on the outer wall of the tower body for containing the neutralizing liquid;

[0016] A suction pump provided on the neutralizing liquid tank, and the liquid inlet of the suction pump is communicated with the neutralizing liquid tank;

[0017] A conveying pipe, one end of which is communicated with the liquid outlet of the suction pump, and the other end of which is inserted into the neutralization reaction chamber and communicated with the other end of the heat exchange pipe.

[0018] Further, a material containing cavity for containing the packing is formed in the packing cylinder. A plurality of through holes communicating the material containing cavity with the neutralization reaction chamber are formed in the packing cylinder. A second one-way valve is provided at the connection between the bottom of the packing cylinder and the smoke inlet pipe. An outlet communicating with the discharging member is formed at the bottom of the packing cylinder, and an inlet communicating with the feeding member is formed at the top of the packing cylinder. The specific technical effect is that by providing a second one-way valve at the connection between the bottom of the packing cylinder and the smoke inlet pipe, the one-way valve only allows the waste gas to flow unidirectionally from the smoke inlet pipe into the material containing cavity of the packing cylinder, and effectively prevents the waste gas from flowing back into the inner cavity of the smoke inlet pipe, thereby ensuring the unidirectionality of the waste gas flow; the waste gas entering the packing cylinder from the smoke inlet pipe is fully contacted with the packing in the material containing cavity and filtered, and then uniformly discharged into the neutralization reaction chamber through a plurality of through holes formed in the packing cylinder, realizing the effective filtration and distribution of the waste gas and improving the efficiency and uniformity of the subsequent neutralization reaction. At the same time, the design of the inlet at the top of the packing cylinder communicating with the feeding member facilitates the regular replenishment of new packing; while the design of the outlet at the bottom communicating with the discharging member facilitates the timely discharge of the packing to be replaced, realizing the convenient replacement and maintenance of the packing.

[0019] Further, a rotating shaft and stirring rods are arranged in the packing cylinder. The stirring rods are arranged on the rotating shaft in the radial direction. A driving motor is installed on the packing cylinder. The output shaft of the driving motor extends into the packing cylinder and is directly connected to the rotating shaft. The specific technical effect is that the driving motor drives the rotating shaft to rotate, and then drives the stirring rods to rotate in the packing cylinder. This can not only increase the contact area and contact time between the waste gas and the packing during the process of the waste gas contacting and filtering with the packing, thereby effectively improving the filtering effect of the waste gas, but also during the feeding process of replacing the packing, the rotation of the stirring rods can continuously stir the packing, break the adhesion force between the packings, improve the feeding speed, and effectively avoid the occurrence of packing caking phenomenon, ensuring the smooth progress of the packing replacement process.

[0020] Further,

[0021] The feeding member includes: a feed hopper, a feed pipe, and a third one-way valve. The feed hopper is arranged outside the tower body. One end of the feed pipe is communicated with the feed hopper, and the other end of the feed pipe extends into the neutralization reaction chamber and is communicated with the packing cylinder. The third one-way valve is arranged in the feed pipe;

[0022] The discharging member includes: a screw discharger, a discharge pipe, and a valve. One end of the screw discharger is communicated with the top of the packing cylinder, and the other end of the screw discharger extends out of the tower body and is communicated with the discharge pipe. The valve is arranged in the discharge pipe. The specific technical effect is that by setting the feed hopper and the feed pipe, the packing can enter the packing cylinder by its own weight, and thus the packing work can be completed quickly. By setting the third one-way valve in the feed pipe, it can prevent the waste gas from running out of the feed hopper; by setting the screw discharger and the discharge pipe for discharging work, it can ensure quick discharging while avoiding the occurrence of material blockage. By setting the valve, it can prevent the waste gas from running out of the discharge pipe, ensuring the treatment effect.

[0023] Further, the reflux assembly includes:

[0024] An exhaust gas detector, which is arranged in the detection chamber and is located above the first one-way valve;

[0025] An exhaust pipe, which is arranged at the top of the tower body. The lower end of the exhaust pipe is communicated with the detection chamber. The first exhaust port is opened at the upper end of the exhaust pipe, and the second exhaust port is opened on the side wall of the exhaust pipe. A first solenoid valve is arranged in the exhaust pipe, and the first solenoid valve is arranged close to the first exhaust port;

[0026] An exhaust fan, which is arranged in the exhaust pipe;

[0027] A reflux pipe is provided outside the tower body. One end of the reflux pipe is communicated with the second exhaust port, and the other end of the reflux pipe is communicated with the neutralization reaction chamber. A second solenoid valve is arranged inside one end of the reflux pipe. The specific technical effect is that by providing an exhaust gas detector, the exhaust gas after filtration and neutralization can be detected. If it meets the emission standard, the first solenoid valve is opened, and the qualified gas is discharged from the first exhaust port through the exhaust fan. If it does not meet the emission standard, the second solenoid valve is opened, and the unqualified gas is sent from the second exhaust port through the discharge pipe into the neutralization reaction chamber for secondary neutralization filtration, so as to ensure the effect of exhaust gas treatment.

[0028] Further, the scrubbing tower further includes a waste discharge pipe and legs. The waste discharge pipe is arranged at the bottom of the tower body. One end of the waste discharge pipe is communicated with the neutralization reaction chamber, and the legs are arranged at the bottom of the tower body. The specific technical effect is that by providing the waste discharge pipe, the waste liquid generated by the neutralization reaction is discharged from the neutralization reaction chamber, and by providing the legs, the tower body is supported and fixed.

[0029] A scrubbing method uses an efficient scrubbing tower as described in any one of the above. Among them, it includes the following steps:

[0030] Step S1: Fill a preset amount of packing into the packing cylinder through the feeding member;

[0031] Step S2: A preset amount of exhaust gas enters the smoke inlet pipe from the exhaust gas inlet. At the same time, the suction pump is started, and the neutralization liquid in the neutralization liquid tank is transported into the conveying pipe and then into the heat exchange pipe through the suction pump. The heat of the exhaust gas in the smoke inlet pipe heats the neutralization liquid in the heat exchange pipe;

[0032] Step S3: The exhaust gas after heat exchange in Step S2 enters the packing cylinder through the second one-way valve;

[0033] Step S4: Start the driving motor to drive the rotation of the rotating shaft, and then drive the rotation of the stirring rod to stir the packing in the packing cylinder, so that the packing and the exhaust gas are fully filtered;

[0034] Step S5: The exhaust gas filtered in Step S4 is discharged into the neutralization reaction chamber of the tower body through the through hole;

[0035] Step S6: The neutralization liquid heated in Step S2 enters the spraying member from the heat exchange pipe, and the spraying member sprays the neutralization liquid into the neutralization reaction chamber. The sprayed neutralization liquid and the filtered exhaust gas carry out a neutralization reaction in the neutralization reaction chamber;

[0036] Step S7: The gas after the neutralization reaction enters the detection chamber through the first one-way valve, and the waste liquid generated by the neutralization reaction is discharged from the neutralization reaction chamber through the waste discharge pipe;

[0037] Step S8: The exhaust gas detector detects the gas after the neutralization reaction in the detection chamber. If it meets the emission standard, the first solenoid valve is opened, and the qualified gas is discharged from the first exhaust port through the exhaust fan. If it does not meet the emission standard, the second solenoid valve is opened, and the unqualified gas is discharged from the second exhaust port through the discharge pipe into the neutralization reaction chamber for secondary neutralization;

[0038] Step S9: Repeat Step S6 to Step S8 until all the exhaust gas meets the emission standard;

[0039] Step S10: When the service life of the packing in the packing cylinder reaches its end, the packing that has reached the service life is conveyed out of the packing cylinder through the discharging component.

[0040] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0041] (1) By setting up the filtering component, the present invention can effectively filter the exhaust gas and improve the purification effect of the exhaust gas;

[0042] (2) By setting up the material changing component, the present invention can regularly and quickly replace the packing, eliminating the need for staff to enter the interior of the tower body for operation, which is time-saving, labor-saving, efficient and convenient;

[0043] (3) By setting up the spraying component in cooperation with the heat exchange tube, the present invention can recover and utilize the waste heat in the exhaust gas, heat the neutralization liquid flowing through the heat exchange tube, and accelerate the neutralization and filtration effect with the exhaust gas during spraying and neutralization, thereby improving the neutralization and filtration effect of the exhaust gas;

[0044] (4) By setting up the reflux component, the present invention can reflux the exhaust gas that does not meet the emission standard until the gas after neutralization and filtration meets the emission standard, ensuring the environmental protection of the exhaust gas emission. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention will be further described below with reference to the drawings and embodiments.

[0046] Figure 1 It is a schematic structural diagram of an exhaust gas scrubbing tower in the prior art;

[0047] Figure 2 It is a three-dimensional structural diagram of an efficient scrubbing tower of the present invention;

[0048] Figure 3 It is a three-dimensional structural diagram of another perspective of an efficient scrubbing tower of the present invention;

[0049] Figure 4 It is a schematic structural diagram of the internal structure of an efficient scrubbing tower of the present invention;

[0050] Figure 5It is a schematic structural diagram of the internal structure of another perspective of an efficient scrubbing tower of the present invention;

[0051] Figure 6 It is a schematic connection structure diagram of the heat exchange tube and the spraying component of the present invention.

[0052] In the figure: 1. Tower body; 101. Detection chamber; 102. Neutralization reaction chamber; 103. First check valve; 2. Return flow assembly; 201. First exhaust port; 202. Second exhaust port; 203. Exhaust gas detector; 204. Exhaust duct; 205. First solenoid valve; 206. Exhaust fan; 207. Return pipe; 208. Second solenoid valve; 209. Dust filter; 3. Filter assembly; 301. Smoke inlet pipe; 302. Packing cylinder; 303. Through hole; 304. Second check valve; 305. Rotating shaft; 306. Stirring rod; 307. Driving motor; 308. Exhaust gas inlet; 4. Material changing assembly; 401. Feed hopper; 402. Feed pipe; 403. Third check valve; 404. Screw feeder; 405. Discharge pipe; 5. Spraying assembly; 501. Heat exchange tube; 502. Connecting pipe; 503. Spraying pipe; 504. Spraying hole; 505. Neutralizing liquid tank; 506. Suction pump; 507. Delivery pipe; 508. Liquid level sensor; 6. Waste discharge pipe; 7. Leg; 8. Controller. Detailed implementation manners

[0053] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It 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, so it cannot be understood as a limitation of the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0055] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should 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 a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. 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.

[0056] As Figures 2 to 6 shown, it is a preferred embodiment of the present invention. An efficient scrubber and scrubbing method of this embodiment include: a tower body 1, a reflux assembly 2, a filtration assembly 3, a material changing assembly 4, and a spraying assembly 5. A first one-way valve 103 is arranged inside the tower body 1. The first one-way valve 103 divides the inner cavity of the tower body 1 into an inspection cavity 101 and a neutralization reaction cavity 102 along the up and down directions. A first exhaust port 201 and a second exhaust port 202 are opened at the top of the tower body 1. Both the first exhaust port 201 and the second exhaust port 202 are communicated with the inspection cavity 101. The reflux assembly 2 is arranged outside the tower body 1. One end of the reflux assembly 2 is communicated with the second exhaust port 202, and the other end of the reflux assembly 2 is communicated with the neutralization reaction cavity 102. The filtration assembly 3 includes a smoke inlet pipe 301 and a packing cylinder 302. The smoke inlet pipe 301 is inserted into the neutralization reaction cavity 102 from the bottom of the tower body 1. One end of the smoke inlet pipe 301 is provided with an exhaust gas inlet 308, and the other end of the smoke inlet pipe 301 is unidirectionally communicated with the packing cylinder 302. The packing cylinder 302 is arranged inside the neutralization reaction cavity 102 and is communicated with the neutralization reaction cavity 102. The material changing assembly 4 includes a feeding member and a discharging member. The feeding member is communicated with the top of the packing cylinder 302 and conveys new packing into the packing cylinder 302 from outside the tower body 1. The discharging member is communicated with the bottom of the packing cylinder 302 and conveys the packing to be replaced out of the tower body 1 from the packing cylinder 302. The spraying assembly 5 includes a spraying member, a heat exchange pipe 501, and a liquid delivery member. Both the spraying member and the heat exchange pipe 501 are arranged inside the neutralization reaction cavity 102. The spraying member is sleeved outside the packing cylinder 302 and is used to spray neutralizing liquid into the neutralization reaction cavity 102. The heat exchange pipe 501 is sleeved outside the smoke inlet pipe 301. One end of the heat exchange pipe 501 is communicated with the spraying member, and the other end of the heat exchange pipe 501 is communicated with the liquid delivery member. The liquid delivery member is arranged outside the tower body 1 and is used to convey neutralizing liquid into the heat exchange pipe 501. The heat exchange pipe 501 is used to heat the neutralizing liquid.

[0057] In a preferred embodiment, the spraying member includes a plurality of connecting pipes 502 and a plurality of spraying pipes 503. The plurality of connecting pipes 502 are arranged in a circular array. Each spraying pipe 503 has an annular structure, and a plurality of spraying holes 504 are formed in each spraying pipe 503. The plurality of spraying pipes 503 are arranged at intervals in sequence along the axial direction of the connecting pipe 502 and are connected to the connecting pipe 502. One end of the heat exchange pipe 501 is communicated with any one of the connecting pipes 502.

[0058] In a preferred embodiment, the heat exchange pipe 501 is spirally arranged outside the smoke inlet pipe 301. Thus, the heat exchange pipe 501 is tightly wound around the outside of the smoke inlet pipe 301 in a spiral structure. This design enables the heat carried by the waste gas passing through the smoke inlet pipe 301 to be transferred to the neutralizing liquid in the heat exchange pipe 501 more efficiently and fully, thereby effectively heating the neutralizing liquid and improving the reaction rate and purification effect in the subsequent spraying and neutralizing process.

[0059] In a preferred embodiment, the liquid delivery member includes:

[0060] A neutralizing liquid tank 505, which is installed on the outer wall of the tower body 1 and is used for containing the neutralizing liquid;

[0061] A suction pump 506, which is arranged on the neutralizing liquid tank 505, and the liquid inlet of the suction pump 506 is communicated with the neutralizing liquid tank 505;

[0062] A delivery pipe 507, one end of which is communicated with the liquid outlet of the suction pump 506, and the other end of which is inserted into the neutralization reaction chamber 102 and is communicated with the other end of the heat exchange pipe 501.

[0063] Specifically, the other end of the delivery pipe 507 is fixedly connected to the other end of the heat exchange pipe 501 through a flange.

[0064] In a preferred embodiment, a material storage cavity for accommodating the filler is formed in the filler cylinder 302. The filler cylinder 302 is provided with a plurality of through holes 303 communicating the material storage cavity with the neutralization reaction cavity 102. A second one-way valve 304 is arranged at the connection between the bottom of the filler cylinder 302 and the smoke inlet pipe 301. The bottom of the filler cylinder 302 is provided with a discharge port communicating with the discharge member, and the top of the filler cylinder 302 is provided with a feed port communicating with the feed member. Thus, by arranging the second one-way valve 304 at the connection between the bottom of the filler cylinder 302 and the smoke inlet pipe 301, the one-way valve only allows the waste gas to flow unidirectionally from the smoke inlet pipe 301 into the material storage cavity of the filler cylinder 302, effectively preventing the waste gas from flowing back into the inner cavity of the smoke inlet pipe 301, thereby ensuring the unidirectionality of the waste gas flow; the waste gas entering the filler cylinder 302 from the smoke inlet pipe 301 is fully contacted with the filler in the material storage cavity and filtered, and then evenly discharged into the neutralization reaction cavity 102 through the plurality of through holes 303 formed in the filler cylinder 302, realizing the effective filtration and distribution of the waste gas, and improving the efficiency and uniformity of the subsequent neutralization reaction. At the same time, the design of the feed port at the top of the filler cylinder 302 communicating with the feed member facilitates the regular replenishment of new filler; while the design of the discharge port at the bottom communicating with the discharge member facilitates the timely discharge of the filler to be replaced, realizing the convenient replacement and maintenance of the filler.

[0065] Specifically, a liquid replenishment pipe is arranged at the top of the neutralization liquid tank 505. The top of the liquid replenishment pipe is threadedly connected with a cap. The liquid replenishment pipe can conveniently and quickly add neutralization liquid into the neutralization liquid tank 505, and the cap plays a role in dust prevention.

[0066] Specifically, a liquid level sensor 508 is arranged at the bottom inside the neutralization liquid tank 505. A controller 8 is installed on the neutralization liquid tank 505. The liquid level sensor 508 is electrically connected or signal-connected to the controller 8. By arranging the liquid level sensor 508, the function of automatically shutting down and alarming can be realized when the neutralization liquid is lacking.

[0067] In a preferred embodiment, a rotating shaft 305 and stirring rods 306 are arranged in the filler cylinder 302. The stirring rods 306 are arranged on the rotating shaft 305 in the radial direction. A driving motor 307 is installed on the filler cylinder 302. The output shaft of the driving motor 307 extends into the filler cylinder 302 and is directly connected to the rotating shaft 305. Thus, by driving the rotating shaft 305 to rotate through the driving motor 307, and then driving the stirring rods 306 to rotate in the filler cylinder 302, it can not only increase the contact area and contact time between the waste gas and the filler during the process of contact filtration of the waste gas and the filler, thereby effectively improving the filtration effect of the waste gas, but also during the feeding process of replacing the filler, the rotation of the stirring rods 306 can continuously stir the filler, break the adhesion force between the fillers, improve the feeding speed, and effectively avoid the occurrence of filler caking phenomenon, ensuring the smooth progress of the filler replacement process.

[0068] In a preferred embodiment,

[0069] The feeding member includes: a feeding hopper 401, a feeding pipe 402, and a third one-way valve 403. The feeding hopper 401 is arranged outside the tower body 1. One end of the feeding pipe 402 is communicated with the feeding hopper 401, and the other end of the feeding pipe 402 extends into the neutralization reaction chamber 102 and is communicated with the packing cylinder 302. The third one-way valve 403 is arranged in the feeding pipe 402;

[0070] The discharging member includes: a screw discharger 404, a discharging pipe 405, and a valve. One end of the screw discharger 404 is communicated with the top of the packing cylinder 302, the other end of the screw discharger 404 extends outside the tower body 1 and is communicated with the discharging pipe 405. The valve is arranged in the discharging pipe 405. Thus, by arranging the feeding hopper 401 and the feeding pipe 402, the packing can enter the packing cylinder 302 by the weight of the packing itself, and then the packing work can be completed quickly. By arranging the third one-way valve 403 in the feeding pipe 402, the exhaust gas can be prevented from running out of the feeding hopper 401; by arranging the screw discharger 404 and the discharging pipe 405 for discharging, the discharging can be ensured quickly and the blocking of materials can be avoided at the same time. By arranging the valve, the exhaust gas can be prevented from running out of the discharging pipe 405, ensuring the treatment effect.

[0071] Specifically, in an embodiment not shown in the figure, the feeding member further includes a screw elevator, and the new packing is conveyed into the feeding hopper 401 by the screw elevator to improve the feeding efficiency. The screw elevator can be a screw elevator that can realize lifting and feeding in the prior art.

[0072] In a preferred embodiment, the reflux assembly 2 includes:

[0073] An exhaust gas detector 203, which is arranged in the detection chamber 101 and is located above the first one-way valve 103;

[0074] An exhaust pipe 204, which is arranged at the top of the tower body 1. The lower end of the exhaust pipe 204 is communicated with the detection chamber 101. The first exhaust port 201 is opened at the upper end of the exhaust pipe 204, and the second exhaust port 202 is opened on the side wall of the exhaust pipe 204. A first solenoid valve 205 is arranged in the exhaust pipe 204, and the first solenoid valve 205 is arranged close to the first exhaust port 201;

[0075] An exhaust fan 206, which is arranged in the exhaust pipe 204;

[0076] The reflux pipe 207 is arranged outside the tower body 1. One end of the reflux pipe 207 is communicated with the second exhaust port 202, and the other end of the reflux pipe 207 is communicated with the neutralization reaction chamber 102. A second solenoid valve 208 is arranged inside one end of the reflux pipe 207. Thus, by setting the exhaust gas detector 203, the filtered and neutralized exhaust gas can be detected. If it meets the emission standard, the first solenoid valve 205 is opened, and the qualified gas is discharged from the first exhaust port 201 through the exhaust fan 206. If it does not meet the emission standard, the second solenoid valve 208 is opened, and the unqualified gas is sent from the second exhaust port 202 to the neutralization reaction chamber 102 through the discharge pipe 405 for re-neutralization filtration, thereby ensuring the effect of exhaust gas treatment.

[0077] Specifically, a dust-proof net 209 is arranged on the first exhaust port 201.

[0078] Specifically, refer to Figure 4 As shown, the connection part of the other end of the reflux pipe 207 and the neutralization reaction chamber 102 is close to the spraying member, ensuring that the refluxed exhaust gas can better contact and neutralize with the neutralization liquid sprayed out.

[0079] Preferably, in an embodiment not shown in the figure, the connection part of the other end of the reflux pipe 207 and the neutralization reaction chamber 102 is close to the bottom of the tower body, ensuring that the exhaust gas refluxed into the neutralization reaction chamber 102 has a longer reaction distance during the process of rising from the bottom to the first one-way valve 103, increasing the reaction time, and further ensuring the effect of exhaust gas treatment.

[0080] In a preferred embodiment, the scrubbing tower further includes: a waste discharge pipe 6 and legs 7. The waste discharge pipe 6 is arranged at the bottom of the tower body 1. One end of the waste discharge pipe 6 is communicated with the neutralization reaction chamber 102, and the legs 7 are arranged at the bottom of the tower body 1. Thus, the waste liquid generated by the neutralization reaction is discharged from the neutralization reaction chamber 102 through the arrangement of the waste discharge pipe 6, and the legs 7 play a role in supporting and fixing the tower body 1.

[0081] Specifically, the number of the legs 7 is three, and the three legs 7 are arranged in a circular array to ensure the stability of the tower body 1. Anti-slip patterns are arranged at the bottom of each leg 7 to further improve the support stability.

[0082] Embodiment 2:

[0083] A scrubbing method using an efficient scrubbing tower as described in any one of the above, including the following steps:

[0084] Step S1, filling a preset amount of packing into the packing cylinder 302 through the feeding member;

[0085] Step S2: A preset amount of waste gas enters the smoke inlet pipe 301 from the waste gas inlet 308. Meanwhile, the suction pump 506 is turned on, and the neutralizing liquid in the neutralizing liquid tank 505 is conveyed into the conveying pipe 507 through the suction pump 506 and then enters the heat exchange pipe 501. The heat of the waste gas in the smoke inlet pipe 301 heats the neutralizing liquid in the heat exchange pipe 501.

[0086] Step S3: The waste gas after heat exchange in Step S2 enters the packing cylinder 302 through the second one-way valve 304.

[0087] Step S4: The driving motor 307 is started to drive the rotation of the rotating shaft 305, and then drive the rotation of the stirring rod 306 to stir the packing in the packing cylinder 302, so that the packing and the waste gas are fully filtered.

[0088] Step S5: The waste gas filtered in Step S4 is discharged into the neutralization reaction chamber 102 of the tower body 1 through the through hole 303.

[0089] Step S6: The neutralizing liquid heated in Step S2 enters the spraying member from the heat exchange pipe 501, and the spraying member sprays the neutralizing liquid into the neutralization reaction chamber 102. The sprayed neutralizing liquid and the filtered waste gas carry out a neutralization reaction in the neutralization reaction chamber 102.

[0090] Step S7: The gas after the neutralization reaction enters the detection chamber 101 through the first one-way valve 103, and the waste liquid generated by the neutralization reaction is discharged from the neutralization reaction chamber 102 through the waste discharge pipe 6.

[0091] Step S8: The waste gas detector 203 detects the gas after the neutralization reaction in the detection chamber 101. If it meets the emission standard, the first electromagnetic valve 205 is opened, and the qualified gas is discharged from the first exhaust port 201 through the exhaust fan 206. If it does not meet the emission standard, the second electromagnetic valve 208 is opened, and the unqualified gas is discharged from the second exhaust port 202 through the discharge pipe 405 and enters the neutralization reaction chamber 102 for secondary neutralization.

[0092] Step S9: Steps S6 to S8 are repeated until all the waste gas meets the emission standard.

[0093] Step S10: When the service life of the packing in the packing cylinder 302 is reached, the packing that has reached the service life is conveyed out of the packing cylinder 302 through the discharging member.

[0094] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0095] (1) By setting the filtering component 3, the present invention can effectively filter the waste gas and improve the purification effect of the waste gas.

[0096] (2) By providing a material replacement component 4, the present invention can quickly replace the packing regularly without the need for staff to enter the interior of the tower body 1, which is time-saving, labor-saving, efficient and convenient.

[0097] (3) By providing a spray component 5 in cooperation with the heat exchange tube 501, the present invention can recover and utilize the waste heat in the exhaust gas, heat the neutralizing liquid flowing through the heat exchange tube 501, and accelerate the neutralization and filtration effect with the exhaust gas during spray neutralization, thereby improving the neutralization and filtration effect of the exhaust gas.

[0098] (4) By providing a reflux component 2, the present invention can reflux the exhaust gas that does not meet the emission standard until the gas after neutralization and filtration meets the emission standard, ensuring the environmental protection of the exhaust gas emission.

[0099] Based on the ideal embodiments of the present invention as inspiration, through the above description, relevant staff can make various changes and modifications completely within the scope not deviating from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An efficient scrubber, characterized in that, Comprising: A tower body (1), within which a first one-way valve (103) is provided. The first one-way valve (103) divides the inner cavity of the tower body (1) into an upper and a lower part, namely a detection chamber (101) and a neutralization reaction chamber (102). At the top of the tower body (1), a first exhaust port (201) and a second exhaust port (202) are provided, and both the first exhaust port (201) and the second exhaust port (202) communicate with the detection chamber (101). A reflux assembly (2), which is arranged outside the tower body (1). One end of the reflux assembly (2) communicates with the second exhaust port (202), and the other end communicates with the neutralization reaction chamber (102). A filtering assembly (3), which includes a smoke inlet pipe (301) and a packing cylinder (302). The smoke inlet pipe (301) is inserted into the neutralization reaction chamber (102) from the bottom of the tower body (1). One end of the smoke inlet pipe (301) is provided with an exhaust gas inlet (308), and the other end of the smoke inlet pipe (301) communicates with the packing cylinder (302) unidirectionally. The packing cylinder (302) is arranged in the neutralization reaction chamber (102) and communicates with the neutralization reaction chamber (102). A material changing assembly (4), which includes a feeding member and a discharging member. The feeding member communicates with the top of the packing cylinder (302) and conveys new packing into the packing cylinder (302) from outside the tower body (1). The discharging member communicates with the bottom of the packing cylinder (302) and conveys the packing to be replaced out of the tower body (1) from the packing cylinder (302). A spraying assembly (5), which includes a spraying member, a heat exchange pipe (501) and a liquid feeding member. Both the spraying member and the heat exchange pipe (501) are arranged in the neutralization reaction chamber (102). The spraying member is sleeved outside the packing cylinder (302) and is used to spray neutralizing liquid into the neutralization reaction chamber (102). The heat exchange pipe (501) is sleeved outside the smoke inlet pipe (301). One end of the heat exchange pipe (501) communicates with the spraying member, and the other end communicates with the liquid feeding member. The liquid feeding member is arranged outside the tower body (1) and is used to convey neutralizing liquid into the heat exchange pipe (501). The heat exchange pipe (501) is used to heat the neutralizing liquid.

2. The high-efficiency scrubber according to claim 1, characterized in that, The spraying member includes a plurality of connecting pipes (502) and a plurality of spraying pipes (503). The plurality of connecting pipes (502) are arranged in a circular array. Each spraying pipe (503) is in a circular structure, and a plurality of spraying holes (504) are provided on each spraying pipe (503). The plurality of spraying pipes (503) are arranged at intervals in the axial direction of the connecting pipe (502) in sequence and are connected to the connecting pipe (502). One end of the heat exchange pipe (501) is connected to any one of the connecting pipes (502).

3. The high-efficiency scrubber according to claim 1, wherein The heat exchange tube (501) is spirally arranged outside the smoke inlet tube (301).

4. An efficient scrubber as claimed in claim 1, wherein, The liquid delivery member includes: A neutralizing liquid tank (505) installed on the outer wall of the tower body (1) for containing neutralizing liquid; A suction pump (506) arranged on the neutralizing liquid tank (505), with the liquid inlet of the suction pump (506) communicating with the neutralizing liquid tank (505); A delivery pipe (507) with one end communicating with the liquid outlet of the suction pump (506) and the other end inserted into the neutralization reaction chamber (102) and communicating with the other end of the heat exchange tube (501).

5. An efficient scrubber as claimed in claim 1, wherein, A material containing cavity for containing packing is formed in the packing cylinder (302). A plurality of through holes (303) communicating the material containing cavity with the neutralization reaction chamber (102) are formed in the packing cylinder (302). A second one-way valve (304) is arranged at the connection between the bottom of the packing cylinder (302) and the smoke inlet tube (301). An outlet is formed at the bottom of the packing cylinder (302) and communicates with the discharge member. An inlet is formed at the top of the packing cylinder (302) and communicates with the feeding member.

6. An efficient scrubber as claimed in claim 5, characterized in that, A rotating shaft (305) and a stirring rod (306) are arranged in the packing cylinder (302). The stirring rod (306) is arranged radially on the rotating shaft (305). A driving motor (307) is installed on the packing cylinder (302), and the output shaft of the driving motor (307) extends into the packing cylinder (302) and is directly connected to the rotating shaft (305).

7. The high-efficiency scrubbing tower according to claim 1, wherein The feeding member includes: a feeding hopper (401), a feeding pipe (402) and a third one-way valve (403). The feeding hopper (401) is arranged outside the tower body (1). One end of the feeding pipe (402) communicates with the feeding hopper (401), and the other end extends into the neutralization reaction chamber (102) and communicates with the packing cylinder (302). The third one-way valve (403) is arranged in the feeding pipe (402); The discharging member includes: a screw discharger (404), a discharging pipe (405) and a valve. One end of the screw discharger (404) communicates with the top of the packing cylinder (302), and the other end extends outside the tower body (1) and communicates with the discharging pipe (405). The valve is arranged in the discharging pipe (405).

8. An efficient scrubber according to claim 1, characterized in that, The reflux assembly (2) includes: An exhaust gas detector (203) arranged in the detection chamber (101) and located above the first one-way valve (103); An exhaust duct (204), the exhaust duct (204) is arranged at the top of the tower body (1), the lower end of the exhaust duct (204) is communicated with the detection cavity (101), the first exhaust port (201) is opened at the upper end of the exhaust duct (204), the second exhaust port (202) is opened on the side wall of the exhaust duct (204), and a first electromagnetic valve (205) is arranged in the exhaust duct (204), and the first electromagnetic valve (205) is arranged close to the first exhaust port (201); An exhaust fan (206), the exhaust fan (206) is arranged in the exhaust duct (204); A return pipe (207), the return pipe (207) is arranged outside the tower body (1), one end of the return pipe (207) is communicated with the second exhaust port (202), the other end of the return pipe (207) is communicated with the neutralization reaction cavity (102), and a second electromagnetic valve (208) is arranged in one end of the return pipe (207).

9. An efficient scrubber according to claim 1, characterized in that, The scrubbing tower further includes: a waste discharge pipe (6) and legs (7), the waste discharge pipe (6) is arranged at the bottom of the tower body (1), one end of the waste discharge pipe (6) is communicated with the neutralization reaction cavity (102), and the legs (7) are arranged at the bottom of the tower body (1).

10. A washing method, which uses an efficient washing tower as described in any one of claims 1 to 9, characterized in that, It includes the following steps: Step S1, filling a preset amount of packing into the packing cylinder (302) through a feeding member; Step S2, a preset amount of waste gas enters the smoke inlet pipe (301) from the waste gas inlet (308). At the same time, the suction pump (506) is started, and the neutralizing liquid in the neutralizing liquid tank (505) is conveyed into the conveying pipe (507) through the suction pump (506) and enters the heat exchange pipe (501). The heat of the waste gas in the smoke inlet pipe (301) heats the neutralizing liquid in the heat exchange pipe (501); Step S3, the waste gas after heat exchange in Step S2 enters the packing cylinder (302) through the second one-way valve (304); Step S4, starting the driving motor (307) to drive the rotating shaft (305) to rotate, and then driving the stirring rod (306) to rotate to stir the packing in the packing cylinder (302) so that the packing and the waste gas are fully filtered; Step S5, the waste gas filtered in Step S4 is discharged into the neutralization reaction cavity (102) of the tower body (1) from the through hole (303); Step S6, the neutralizing liquid heated in Step S2 enters the spraying member from the heat exchange pipe (501), and the spraying member sprays the neutralizing liquid into the neutralization reaction cavity (102). The sprayed neutralizing liquid and the filtered waste gas carry out a neutralization reaction in the neutralization reaction cavity (102); Step S7, the gas after the neutralization reaction enters the detection cavity (101) through the first one-way valve (103), and the waste liquid generated by the neutralization reaction is discharged from the neutralization reaction cavity (102) through the waste discharge pipe (6); Step S8: The exhaust gas detector (203) detects the gas after the neutralization reaction in the detection chamber (101). If it meets the emission standard, the first solenoid valve (205) is opened, and the qualified gas is discharged from the first exhaust port (201) through the exhaust fan (206). If it does not meet the emission standard, the second solenoid valve (208) is opened, and the unqualified gas is sent from the second exhaust port (202) through the discharge pipe (405) into the neutralization reaction chamber (102) for secondary neutralization; Step S9: Repeat Step S6 to Step S8 until all the exhaust gas meets the emission standard; Step S10: When the service life of the packing in the packing cylinder (302) is reached, the packing that has reached the service life is conveyed out of the packing cylinder (302) through the discharging member.

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