Desulfurizing tower for industrial waste gas treatment

Abstract

The invention discloses a desulfurizing tower for industrial waste gas treatment, and belongs to the field of waste gas purification. A desulfurizing tower for industrial waste gas treatment comprises a concrete tower body, one side of the concrete tower body is communicated with a waste gas guide pipe, the top of the concrete tower body is communicated with a smoke outlet, a demister is arranged in the concrete tower body and located below the smoke outlet, and the outer portion of the concrete tower body is communicated with an oxygen supply assembly. The mixing assembly is used for stirring slurry and waste gas in the concrete tower body; a partition box for promoting full reaction of waste gas and slurry is arranged above the mixing assembly, and an alloy tray is arranged in the partition box; the mixing assembly is communicated with the oxygen supply assembly; the mixing plate is used for mixing absorbent slurry, oxygen and waste gas, the stirring area is large, and the mixing range is wide, so that the mixing effect of the absorbent slurry and the waste gas is improved; the waste gas desulfurization reaction time is prolonged, so that the waste gas and the absorbent slurry fully react, and the desulfurization effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas purification, and in particular to a desulfurization tower for industrial waste gas treatment. Background Art

[0002] my country is a major coal consumer. The combustion of combustibles in burners (i.e. boilers) produces exhaust gas, which is one of the main emissions from thermal power plants. Since the exhaust gas usually contains a large amount of nitrogen oxides NOx, sulfides SO2 and dust, on the one hand, it will cause highly corrosive acid rain, and on the other hand, the emitted dust will cause air pollution and endanger health. Therefore, the exhaust gas must be treated with desulfurization, denitrification and dust removal before it is discharged; the desulfurization tower is a tower equipment for desulfurization of industrial waste gas. The current desulfurization tower generally uses a spraying method for desulfurization. The absorbent slurry is atomized in the absorption tower and sprayed downward from the top of the desulfurization tower. The exhaust gas flows upward from the bottom of the desulfurization tower and contacts with the absorbent slurry. The absorbent slurry absorbs sulfur dioxide in the exhaust gas.

[0003] In the prior art, the sulfur dioxide absorption rate is low due to the short contact time when sulfur dioxide and absorbent slurry are mixed. The sulfur dioxide absorption rate is generally ensured by increasing the height of the desulfurization tower, which results in a large desulfurization tower and high cost. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that in the prior art, when sulfur dioxide and absorbent slurry are mixed, the contact time is short and the sulfur dioxide absorption rate is low. Generally, the sulfur dioxide absorption rate is ensured by increasing the height of the desulfurization tower, resulting in a large desulfurization tower and high cost. A desulfurization tower for industrial waste gas treatment is proposed to solve the problem that

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A desulfurization tower for treating industrial waste gas comprises a concrete tower body, one side of the concrete tower body is connected to a waste gas duct, and the top of the concrete tower body is connected to a smoke exhaust port, a demister is arranged in the concrete tower body below the smoke exhaust port, and the outside of the concrete tower body is connected to an oxygen supply component, and also comprises: a mixing component for stirring slurry and waste gas in the concrete tower body; a partition box for promoting full reaction of waste gas and slurry is arranged above the mixing component, and an alloy tray is arranged in the partition box; the mixing component and the oxygen supply component are connected.

[0007] Preferably, the oxygen supply assembly includes an oxygen tank and an oxygen delivery pipe connected to the oxygen tank, one side of the oxygen tank is connected to an air pump, the oxygen delivery pipe is arranged as an arc-shaped bent pipe structure, and the oxygen delivery pipe and the concrete tower body are arranged concentrically, an oxygen delivery pipe is connected between the oxygen delivery pipe and the concrete tower body, and the oxygen delivery pipe passes through the concrete tower body and extends into the concrete tower body.

[0008] Preferably, the mixing assembly includes a first screw rod and a second screw rod rotatably arranged in a concrete tower body, the first screw rod and the second screw rod are fixedly connected by a coupling, mixing plates are arranged on the surfaces of the first screw rod and the second screw rod, a cavity is arranged in the mixing plate, and a through hole is opened in the mixing plate, the through hole and the cavity are connected through the through hole, and the mixing plate and the oxygen delivery pipe are fixedly connected.

[0009] In order to drive the two groups of mixing plates to move back and forth toward or relative to each other, further, the surfaces of the first screw rod and the second screw rod are movably connected with a sliding sleeve through an internal threaded sleeve, the sliding sleeve is fixedly connected to the mixing plate, the mixing plate is slidably connected to the bottom surface of the concrete tower body, a guide bar is fixedly installed on the bottom surface of the concrete tower body, a sliding groove is opened at the bottom of the mixing plate, and the sliding groove and the guide bar are matched.

[0010] In order to make the mixing plate automatically reciprocate in the concrete tower body, further, one end of the second screw rod passes through the inner wall of the concrete tower body and extends to the outside of the concrete tower body, and a second gear is fixedly installed on the end of the second screw rod, and a motor is provided outside the concrete tower body, and a first gear is fixedly installed on the output shaft end of the motor, and the first gear and the second gear are meshed.

[0011] In order to prolong the rising time of the exhaust gas and improve the reaction efficiency of the exhaust gas and slurry, an air collecting assembly is further arranged between the mixing plate and the partition box, and the air collecting assembly includes two groups of air bags, one end of the air bag is fixedly connected to the mixing plate through a linkage rod, and the linkage rod is a hollow tube structure, one end of the air bag is connected to two groups of air suction nozzles, and the air bag is fixedly connected to the partition box through an air supply pipe, and the air bag is fixedly connected to the inner wall of the concrete tower body away from the air suction nozzle.

[0012] In order to utilize the linkage rod to transport oxygen into the mixing plate and increase the reaction efficiency of oxygen to the slurry and exhaust gas, further, one end of the linkage rod is slidably disposed in the side wall of the concrete tower body, and the linkage rod is connected to an intake pipe through a hose, and the intake pipe is connected to the oxygen delivery pipe.

[0013] Preferably, an air hole is opened on the top of the partition box, and the partition box and the inner wall of the concrete tower body are connected by an elastic component. The elastic component includes a fixed plate, and a guide rod is slidably connected in the fixed plate. The bottom end of the guide rod is fixedly connected to the upper surface of the partition box, and a spring is connected to the surface of the guide rod between the fixed plate and the partition box.

[0014] In order to ensure that the slurry accumulated in the partition box is discharged back to the bottom of the concrete tower body, further, the bottom of the partition box is fixedly connected with a pipe with a solenoid valve, and a weighing sensor is arranged at the bottom of the partition box, and the weighing sensor and the pipe with the solenoid valve are electrically connected.

[0015] Preferably, a spray assembly is provided in the concrete tower body, and the spray assembly includes spray pipes arranged up and down, one end of the spray pipe passes through the inner wall of the concrete tower body and extends to the interior of the concrete tower body, and the spray pipe is located in the concrete tower body. One end thereof is fixedly connected to a nozzle, and the nozzle is configured as a silicon carbide vortex nozzle. A circulation pump is provided outside the concrete tower body, and the circulation pump is connected to the concrete tower body through a liquid inlet pipe, and the circulation pump is connected to the spray pipe through a slurry delivery pipe.

[0016] Compared with the prior art, the present invention provides a desulfurization tower for industrial waste gas treatment, which has the following beneficial effects:

[0017] 1. The desulfurization tower is provided with a reciprocating mixing plate at the bottom of the concrete tower body, and the mixing plate is used to mix the absorbent slurry, oxygen and exhaust gas. The stirring area is large and the mixing range is wide, thereby improving the mixing effect of the absorbent slurry and the exhaust gas;

[0018] 2. The desulfurization tower has a cavity in the mixing plate to store exhaust gas and oxygen. When the absorbent slurry after spraying falls to the bottom of the concrete tower body, it can enter the cavity through the through hole and continue to react for as long as possible to promote the oxidation reaction of sulfur dioxide and generate sulfate, thereby improving the desulfurization efficiency.

[0019] 3. The desulfurization tower is provided with an air bag, and an air suction nozzle is provided at one end of the air bag. As the air bag is compressed and stretched, the exhaust gas is first sucked into the cavity with absorbent slurry and oxygen by the air suction nozzle, and then enters the partition box, which prolongs the desulfurization reaction time of the exhaust gas, allows the exhaust gas and the absorbent slurry to fully react, and improves the desulfurization effect.

[0020] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The present invention utilizes a mixing plate to mix the absorbent slurry, oxygen and exhaust gas. The stirring area is large and the mixing range is wide. Therefore, the mixing effect of the absorbent slurry and the exhaust gas is improved; the reaction is continued for as long as possible to promote the oxidation reaction of sulfur dioxide to generate sulfate, thereby improving the desulfurization efficiency; the time of the exhaust gas desulfurization reaction is extended, so that the exhaust gas and the absorbent slurry fully react, thereby improving the desulfurization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main three-dimensional structure of a desulfurization tower for industrial waste gas treatment proposed by the present invention;

[0022] Figure 2 This is a rear perspective structural diagram of a desulfurization tower for industrial waste gas treatment proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of a cross-sectional three-dimensional structure of a desulfurization tower for industrial waste gas treatment proposed by the present invention;

[0024] Figure 4 A desulfurization tower for industrial waste gas treatment proposed by the present invention Figure 3 The enlarged structural diagram of part A in the middle;

[0025] Figure 5 A schematic diagram of the internal structure of a mixing plate of a desulfurization tower for industrial waste gas treatment proposed by the present invention;

[0026] Figure 6 A desulfurization tower for industrial waste gas treatment proposed by the present invention Figure 5 The enlarged structural diagram of part B in the middle;

[0027] Figure 7 This is a schematic diagram of the internal structure of a partition box of a desulfurization tower for industrial waste gas treatment proposed by the present invention;

[0028] Figure 8 This is a schematic diagram of the three-dimensional structure of a spray assembly of a desulfurization tower for industrial waste gas treatment proposed by the present invention.

[0029] In the figure: 1, concrete tower body; 2, exhaust gas duct; 3, smoke exhaust port; 4, circulation pump; 5, liquid inlet pipe; 6, slurry delivery pipe; 7, spray pipe; 8, motor; 9, first gear; 10, second gear; 11, mounting plate; 12, first screw rod; 13, second screw rod; 14, sliding sleeve; 15, mixing plate; 16, guide bar; 17, cavity; 18, through hole; 19, slide groove; 20, through hole; 2 1. Partition box; 22. Air hole; 23. Alloy tray; 24. Fixed plate; 25. Spring; 26. Guide rod; 27. Solenoid valve; 28. Air bag; 29. ​​Linkage rod; 30. Air suction nozzle; 31. Hose; 32. Air suction pipe; 33. Air supply pipe; 34. Air pump; 35. Oxygen supply pipe; 36. Oxygen supply pipe; 37. Oxygen tank; 38. Defogger; 39. Nozzle; 40. Weighing sensor. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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 cannot be understood as a limitation on the present invention.

[0032] Example:

[0033] Reference Figure 1-Figure 8 A desulfurization tower for industrial waste gas treatment includes a concrete tower body 1, one side of the concrete tower body 1 is connected to a waste gas duct 2, and the top of the concrete tower body 1 is connected to a smoke outlet 3, and a demister 38 is arranged below the smoke outlet 3 in the concrete tower body 1.

[0034] In this embodiment, the exhaust gas is introduced into the bottom area of ​​the concrete tower body 1 through the exhaust gas conduit 2, and is mixed with the absorbent slurry in the concrete tower body 1 to purify the exhaust gas, thereby removing SO 2 After the exhaust gas is desulfurized, it passes through a demister 38 to remove droplets and a small amount of dust in the exhaust gas, and is finally discharged from the concrete tower body 1 through a smoke exhaust port 3 to reduce pollution to the environment.

[0035] It should be noted that the absorbent slurry is usually composed of water and sulfur dioxide absorbent. Among them, water is mainly used as a carrier to spray into the exhaust gas to absorb and neutralize the sulfur dioxide in the exhaust gas. The sulfur dioxide absorbent is the main component of the desulfurization tower spray slurry, mainly including limestone, gypsum and other substances.

[0036] The outside of the concrete tower body 1 is connected to an oxygen supply assembly, which includes an oxygen tank 37 and an oxygen delivery pipe 35 connected to the oxygen tank 37. One side of the oxygen tank 37 is connected to an air pump 34. The oxygen delivery pipe 35 is configured as an arc-shaped curved pipe structure, and the oxygen delivery pipe 35 and the concrete tower body 1 are concentrically arranged. An oxygen delivery pipe 36 is connected between the oxygen delivery pipe 35 and the concrete tower body 1, and the oxygen delivery pipe 36 passes through the concrete tower body 1 and extends into the concrete tower body 1.

[0037] In this embodiment, the bottom of the tower body is connected to an oxygen delivery pipe 35 through an oxygen delivery pipe 36, the oxygen delivery pipe 35 is connected to an external oxygen tank 37, the oxygen tank 37 is connected to an air pump 34, and the oxygen delivery pipe 36 runs through the concrete tower body 1 and extends into the concrete tower body 1. It should be noted that a group of one-way valves for air to enter the slurry pool from the outside are arranged in the oxygen delivery pipe 36, so 2 After being absorbed by the slurry, it forms HSO 3 - , HSO 3 -A portion is completely oxidized in the tower, and the rest HSO 3 - Enter the slurry pool and be oxidized by air.

[0038] A mixing assembly for stirring slurry and exhaust gas in a concrete tower body 1, the mixing assembly includes a first screw rod 12 and a second screw rod 13 rotatably arranged in the concrete tower body 1, the first screw rod 12 and the second screw rod 13 are fixedly connected by a coupling, and mixing plates 15 are arranged on the surfaces of the first screw rod 12 and the second screw rod 13.

[0039] In this embodiment, two groups of symmetrically arranged mixing plates 15 are arranged in the concrete tower body 1. The mixing plates 15 reciprocate to move closer and apart in the concrete tower body 1, so as to mix the absorbent slurry at the bottom of the concrete tower body 1. The contact structure area between the mixing plates 15 and the absorbent slurry is large enough, and the movement range is large, thereby improving the mixing effect of the absorbent slurry and the exhaust gas.

[0040] A through hole 18 is provided in the mixing plate 15. In the process of stirring the absorbent slurry, the liquid and the introduced exhaust gas can pass through the through hole 18, so that the absorbent slurry and the exhaust gas are fully mixed.

[0041] The surfaces of the first screw rod 12 and the second screw rod 13 are movably connected with a sliding sleeve 14 through an internal threaded sleeve, the sliding sleeve 14 and the mixing plate 15 are fixedly connected, the mixing plate 15 and the inner bottom surface of the concrete tower body 1 are slidably connected, the inner bottom surface of the concrete tower body 1 is fixedly installed with a guide bar 16, and a sliding groove 19 is provided at the bottom of the mixing plate 15, and the sliding groove 19 and the guide bar 16 are matched.

[0042] Since the mixing plate 15 is slidably connected to the guide bar 16 provided at the bottom of the concrete tower body 1, the movement of the mixing plate 15 in the vertical direction is restricted. During mixing, the first screw rod 12 and the second screw rod 13 rotate, which can drive the sleeve 14 on the surface of the first screw rod 12 and the second screw rod 13 to move on their surface. Since the sleeve 14 is connected to the mixing plate 15, the rotation of the first screw rod 12 and the second screw rod 13 can drive the two groups of mixing plates 15 to reciprocate, thereby fully mixing the absorbent slurry and the exhaust gas in the concrete tower body 1.

[0043] One end of the second screw rod 13 passes through the inner wall of the concrete tower body 1 and extends to the outside of the concrete tower body 1, and a second gear 10 is fixedly installed on the end of the second screw rod 13. A motor 8 is arranged outside the concrete tower body 1, and a first gear 9 is fixedly installed on the output shaft end of the motor 8. The first gear 9 and the second gear 10 are meshed. A mounting plate 11 is arranged at the position where one end of the second screw rod 13 and the concrete tower body 1 pass through, so as to ensure the stability of the connection and rotation between the second screw rod 13 and the first screw rod 12.

[0044] In this embodiment, a set of driving components is arranged outside the concrete tower body 1 to drive the first screw rod 12 and the second screw rod 13 to rotate.

[0045] Specifically, the motor 8 is started, and the first gear 9 and the second gear 10 at the output shaft end of the motor 8 are meshed, thereby driving the second screw rod 13 connected to the second gear 10 to rotate, and the first screw rod 12 and the second screw rod 13 are fixedly connected by a coupling. Therefore, the first screw rod 12 and the second screw rod 13 rotate synchronously. It should be noted that the surface of the first screw rod 12 is set to a left-handed external thread, and the surface of the second screw rod 13 is set to a right-handed external thread. Therefore, when the first screw rod 12 and the second screw rod 13 rotate at the same time, they can drive the two groups of mixing plates 15 to reciprocate. With the forward / reverse rotation of the motor 8, the movement mode of the mixing plate 15 is to move relatively close to each other / separate in the opposite direction at the same time, so as to realize the mixing reaction of the absorbent slurry and the exhaust gas.

[0046] An air collecting assembly is arranged between the mixing plate 15 and the partition box 21, and the air collecting assembly includes two groups of air bags 28. One end of the air bag 28 is fixedly connected to the mixing plate 15 through a linkage rod 29. A cavity 17 is arranged in the mixing plate 15, and a through hole 18 is opened in the mixing plate 15. The through hole 18 and the cavity 17 are connected through a through hole 20. The linkage rod 29 is a hollow tube structure. One end of the air bag 28 is connected with two groups of air suction nozzles 30, and the air bag 28 is fixedly connected to the partition box 21 through an air supply pipe 33. The side of the air bag 28 away from the air suction nozzle 30 is fixedly connected to the inner wall of the concrete tower body 1.

[0047] In this embodiment, an air bag 28 is provided, and an air suction nozzle 30 is provided at one end of the air bag 28. As the air bag 28 is compressed and stretched, the exhaust gas is first sucked into the cavity 17 containing absorbent slurry and oxygen by the air suction nozzle 30, and then enters the partition box 21, thereby prolonging the time of the exhaust gas desulfurization reaction.

[0048] Specifically, the mixing plate 15 is connected to one side of the airbag 28 through the linkage rod 29. The movement of the mixing plate 15 drives the airbag 28 to compress / stretch. When the airbag 28 is pulled to stretch, the exhaust gas is sucked into the partition box 21 by the suction nozzle 30. A one-way valve is provided in the suction nozzle 30. The exhaust gas is only sucked in by the suction nozzle 30, and no gas is discharged.

[0049] It should be noted that the bottom surface of the air bag 28 is always higher than the liquid level of the absorbent slurry at the bottom of the concrete tower body 1 .

[0050] A partition box 21 is arranged above the mixing assembly to promote a full reaction between the exhaust gas and the slurry, and an alloy tray 23 is arranged inside the partition box 21 .

[0051] In this embodiment, a partition box 21 with a hollow structure is provided, and an alloy tray 23 is arranged inside the partition box 21, which can not only divide the oxidation zone and the absorption zone inside the concrete tower body 1, but also realize the uniform distribution of the exhaust gas, prolong the reaction time of the exhaust gas and the slurry, and ensure the purification effect of the exhaust gas.

[0052] In this embodiment, an air hole 22 is opened on the top of the partition box 21. After the desulfurization treatment is carried out through the alloy tray 23, the flue gas goes up, is discharged through the air hole 22 and then continues to rise. Then, it is sprayed with absorbent slurry. The circulating pump 4 sprays the absorbent slurry into the desulfurization tower to form fine droplets. These droplets come into contact with the flue gas containing sulfur dioxide, undergo a chemical reaction, and generate substances such as calcium sulfate, thereby achieving the desulfurization effect.

[0053] A spray assembly is arranged in the concrete tower body 1, and the spray assembly includes a spray pipe 7 arranged up and down. One end of the spray pipe 7 passes through the inner wall of the concrete tower body 1 and extends to the inside of the concrete tower body 1. The spray pipe 7 is located in the concrete tower body 1 and is fixedly connected to a nozzle 39 at one end. The nozzle 39 is configured as a silicon carbide vortex nozzle. A circulation pump 4 is arranged outside the concrete tower body 1. The circulation pump 4 is connected to the concrete tower body 1 through a liquid inlet pipe 5, and the circulation pump 4 is connected to the spray pipe 7 through a slurry delivery pipe 6.

[0054] In this embodiment, a circulation pump 4 is arranged outside the concrete tower body 1, and the liquid inlet of the circulation pump 4 is connected to the inner bottom of the concrete tower body 1 through the liquid inlet pipe 5. In addition, the liquid outlet of the circulation pump 4 is connected to the top of the concrete tower body 1 through at least 5 groups of spray pipes 7, and the demister 38 is arranged above the spray pipe 7.

[0055] It should be noted that one end of the spray pipe 7 is connected to a nozzle 39, and the nozzle 39 is configured as a silicon carbide vortex nozzle, which has the advantages of being corrosion-resistant and not prone to clogging, and can ensure the long-term stable operation of the desulfurization system.

[0056] The circulation pump 4 is started, and the absorbent slurry is conveyed through the slurry delivery pipe 6 and the spray pipe 7 by the liquid inlet pipe 5, and finally fine droplets are sprayed out through the nozzle 39 for desulfurization treatment. Among them, the silicon carbide material has excellent corrosion resistance and can be used for a long time in the desulfurization system without being corroded by the alkaline environment.

[0057] An air hole 22 is opened on the top of the partition box 21, and the partition box 21 is connected to the inner wall of the concrete tower body 1 through an elastic component. The elastic component includes a fixed plate 24, and a guide rod 26 is slidably connected inside the fixed plate 24. The bottom end of the guide rod 26 is fixedly connected to the upper surface of the partition box 21, and a spring 25 is connected to the surface of the guide rod 26 between the fixed plate 24 and the partition box 21. A pipeline with a solenoid valve 27 is fixedly connected to the bottom of the partition box 21. A weighing sensor 40 is arranged at the bottom of the partition box 21, and the weighing sensor 40 is electrically connected to the pipeline with the solenoid valve 27.

[0058] In this embodiment, a pipe with a solenoid valve 27 is provided at the bottom of the partition box 21. When the absorbent slurry falls back into the partition box 21 and reaches a certain mass, the partition box 21 is acted upon by gravity, so that the weighing sensor 40 obtains sensing data, and thus the solenoid valve 27 opens, quickly discharges the absorbent slurry, and continues to react with the exhaust gas introduced from the bottom for desulfurization.

[0059] It should be noted that the partition box 21 is slidably connected to the concrete tower body 1. To ensure the movement range of the partition box 21, the lowest position is that a distance is still maintained between the airbag 28 and the absorbent slurry.

[0060] In order to ensure that the partition box 21 can generate a certain displacement in the vertical direction, the partition box 21 is connected to the inner wall of the concrete tower body 1 through an elastic component.

[0061] Specifically, after the absorbent slurry enters the partition box 21, it stays on the alloy tray 23 and fully reacts with the exhaust gas. After reaching a certain weight, the spring 25 is stretched, the partition box 21 moves down, the solenoid valve 27 opens, and the absorbent slurry flows out through the pipe of the solenoid valve 27 to continue the subsequent exhaust gas desulfurization reaction.

[0062] The mixing assembly and the oxygen supply assembly are connected, and the mixing plate 15 and the oxygen delivery pipe 35 are fixedly connected. Specifically, one end of the linkage rod 29 is slidably set in the side wall of the concrete tower body 1, and the linkage rod 29 is connected to the intake pipe 32 through the hose 31, and the intake pipe 32 and the oxygen delivery pipe 35 are connected.

[0063] In this embodiment, a cavity 17 is opened in the mixing plate 15, and the cavity 17 is used to store exhaust gas and oxygen. When the absorbent slurry after spraying falls to the bottom of the concrete tower body 1, it can enter the cavity 17 through the through hole 20 and continue to react for as long as possible to promote the oxidation reaction of sulfur dioxide to generate sulfate, thereby improving the desulfurization efficiency.

[0064] In the present invention, first, the waste gas generated outside enters the bottom area of ​​the concrete tower body 1 through the waste gas conduit 2, and is mixed with the absorbent slurry in the concrete tower body 1 to purify the waste gas, thereby removing SO 2 After the exhaust gas is desulfurized, it passes through the demister 38 to remove droplets and a small amount of dust in the exhaust gas, and finally is discharged from the concrete tower body 1 through the exhaust port 3;

[0065] The motor 8 is started, and the first gear 9 and the second gear 10 at the output shaft end of the motor 8 are meshed, thereby driving the second screw 13 connected to the second gear 10 to rotate, and the first screw 12 and the second screw 13 are fixedly connected by a coupling, and the surface of the first screw 12 is set as a left-handed external thread, and the surface of the second screw 13 is set as a right-handed external thread. Therefore, when the first screw 12 and the second screw 13 rotate at the same time, they can drive the two groups of mixing plates 15 to move back and forth. With the forward / reverse rotation of the motor 8, the movement mode of the mixing plates 15 is to move relatively close to each other at the same time / reverse separation at the same time, so as to realize the mixing reaction of the absorbent slurry and the exhaust gas;

[0066] In the initial state, the absorbent slurry falls back to the inner bottom of the concrete tower body 1 after being sprayed. The absorbent slurry accumulates more and more at the bottom. After reaching a certain water level, it is pumped out by the circulation pump 4 and sprayed from top to bottom into the concrete tower body 1 through the slurry delivery pipe 6, the spray pipe 7 and the nozzle 39. The absorbent slurry reacts with the exhaust gas to perform a desulfurization reaction, purifying the pollution-free gas and discharging it outside the concrete tower body 1.

[0067] Start the circulation pump 4, use the liquid inlet pipe 5 to pass the absorbent slurry through the slurry delivery pipe 6 and the spray pipe 7, and finally spray fine droplets through the nozzle 39 for desulfurization treatment; a pipeline with a solenoid valve 27 is provided at the bottom of the partition box 21. When the absorbent slurry falls back into the partition box 21 and reaches a certain mass, the partition box 21 is acted upon by gravity, so that the weighing sensor 40 obtains sensing data, thereby opening the solenoid valve 27, quickly discharging the absorbent slurry, and continuously reacting with the exhaust gas introduced from the bottom for desulfurization.

[0068] The mixing plate 15 is connected to one side of the airbag 28 through the linkage rod 29. The movement of the mixing plate 15 drives the airbag 28 to compress / stretch. When the airbag 28 is stretched, the exhaust gas is sucked into the partition box 21 by the air suction nozzle 30. A one-way valve is arranged in the air suction nozzle 30. The exhaust gas is only sucked by the air suction nozzle 30. An alloy tray 23 is arranged in the partition box 21, which can divide the oxidation zone and the absorption zone inside the concrete tower body 1, and realize the uniform distribution of the exhaust gas, prolong the reaction time of the exhaust gas and the slurry, and ensure the purification effect of the exhaust gas.

[0069] During the desulfurization process, the oxygen delivery pipe 35 is connected to the external oxygen tank 37, the oxygen tank 37 is connected to the air pump 34, the oxygen delivery pipe 36 runs through the concrete tower body 1 and extends to the concrete tower body 1 to connect to the oxygen delivery pipe 35, and a group of one-way valves are set in the oxygen delivery pipe 36 for air to enter the slurry pool from the outside, SO 2 After being absorbed by the slurry, it forms HSO 3 - , HSO 3 - A portion is completely oxidized in the tower, and the rest HSO 3- It enters the slurry pool and is oxidized by the air, thereby improving the desulfurization effect, ensuring that the waste gas is purified before discharge, and avoiding air pollution.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A desulfurization tower for treating industrial waste gas, comprising a concrete tower body (1), one side of the concrete tower body (1) is connected to a waste gas conduit (2), and the top of the concrete tower body (1) is connected to a smoke exhaust port (3), a demister (38) is arranged below the smoke exhaust port (3) in the concrete tower body (1), and the outside of the concrete tower body (1) is connected to an oxygen supply component, characterized in that: Also includes: A mixing assembly for mixing slurry and exhaust gas in a concrete tower body (1); A partition box (21) is arranged above the mixing assembly to promote a full reaction between the exhaust gas and the slurry, and an alloy tray (23) is arranged inside the partition box (21); The mixing component and the oxygen supply component are connected.

2. A desulfurization tower for industrial waste gas treatment according to claim 1, characterized in that: The oxygen supply assembly comprises an oxygen tank (37) and an oxygen delivery pipe (35) connected to the oxygen tank (37); one side of the oxygen tank (37) is connected to an air pump (34); the oxygen delivery pipe (35) is arranged as an arc-shaped curved pipe structure; the oxygen delivery pipe (35) and the concrete tower body (1) are arranged concentrically; an oxygen delivery pipe (36) is connected between the oxygen delivery pipe (35) and the concrete tower body (1); the oxygen delivery pipe (36) penetrates the concrete tower body (1) and extends into the concrete tower body (1).

3. A desulfurization tower for industrial waste gas treatment according to claim 2, characterized in that: The mixing assembly comprises a first screw rod (12) and a second screw rod (13) which are rotatably arranged in a concrete tower body (1); the first screw rod (12) and the second screw rod (13) are fixedly connected via a coupling; a mixing plate (15) is arranged on the surface of the first screw rod (12) and the second screw rod (13); a cavity (17) is arranged in the mixing plate (15); a through hole (18) is opened in the mixing plate (15); the through hole (18) and the cavity (17) are connected through a through hole (20); and the mixing plate (15) and the oxygen delivery pipe (35) are fixedly connected.

4. A desulfurization tower for industrial waste gas treatment according to claim 3, characterized in that: The surfaces of the first screw rod (12) and the second screw rod (13) are movably connected with a sliding sleeve (14) via an internal threaded sleeve, the sliding sleeve (14) and the mixing plate (15) are fixedly connected, the mixing plate (15) and the inner bottom surface of the concrete tower body (1) are slidably connected, the inner bottom surface of the concrete tower body (1) is fixedly installed with a guide bar (16), the bottom of the mixing plate (15) is provided with a sliding groove (19), and the sliding groove (19) and the guide bar (16) are matched.

5. A desulfurization tower for industrial waste gas treatment according to claim 3, characterized in that: One end of the second screw rod (13) passes through the inner wall of the concrete tower body (1) and extends to the outside of the concrete tower body (1), and a second gear (10) is fixedly mounted on the end of the second screw rod (13). A motor (8) is arranged outside the concrete tower body (1), and a first gear (9) is fixedly mounted on the output shaft end of the motor (8), and the first gear (9) is meshed with the second gear (10).

6. A desulfurization tower for industrial waste gas treatment according to claim 5, characterized in that: An air collecting assembly is arranged between the mixing plate (15) and the partition box (21), and the air collecting assembly comprises two groups of air bags (28). One end of the air bag (28) is fixedly connected to the mixing plate (15) via a linkage rod (29), and the linkage rod (29) is a hollow tube structure. One end of the air bag (28) is connected to two groups of air suction nozzles (30), and the air bag (28) is fixedly connected to the partition box (21) via an air supply pipe (33). The side of the air bag (28) away from the air suction nozzle (30) is fixedly connected to the inner wall of the concrete tower body (1).

7. A desulfurization tower for industrial waste gas treatment according to claim 6, characterized in that: One end of the linkage rod (29) is slidably disposed in the side wall of the concrete tower body (1); the linkage rod (29) is connected to an air intake pipe (32) via a hose (31); and the air intake pipe (32) is connected to an oxygen delivery pipe (35).

8. A desulfurization tower for industrial waste gas treatment according to claim 1, characterized in that: The partition box (21) is provided with an air hole (22) at the top, and the partition box (21) and the inner wall of the concrete tower body (1) are connected via an elastic component, the elastic component comprising a fixed plate (24), a guide rod (26) being slidably connected inside the fixed plate (24), the bottom end of the guide rod (26) being fixedly connected to the upper surface of the partition box (21), and a spring (25) being connected to the surface of the guide rod (26) between the fixed plate (24) and the partition box (21).

9. A desulfurization tower for industrial waste gas treatment according to claim 1, characterized in that: The bottom of the partition box (21) is fixedly connected to a pipeline with a solenoid valve (27), and a weighing sensor (40) is arranged at the bottom of the partition box (21). The weighing sensor (40) and the pipeline with the solenoid valve (27) are electrically connected.

10. A desulfurization tower for industrial waste gas treatment according to claim 1, characterized in that: A spray assembly is arranged inside the concrete tower body (1), and the spray assembly comprises spray pipes (7) arranged up and down, one end of the spray pipe (7) passes through the inner wall of the concrete tower body (1) and extends into the interior of the concrete tower body (1), one end of the spray pipe (7) located inside the concrete tower body (1) is fixedly connected to a nozzle (39), and the nozzle (39) is configured as a silicon carbide vortex nozzle, and a circulation pump (4) is arranged outside the concrete tower body (1), the circulation pump (4) is connected to the concrete tower body (1) through a liquid inlet pipe (5), and the circulation pump (4) is connected to the spray pipe (7) through a slurry delivery pipe (6).

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