Device and method for purifying flue gas of sintering machine

Abstract

The invention belongs to the technical field of sintering flue gas purification, and particularly relates to a sintering machine flue gas purification device and method.The sintering machine flue gas purification device comprises a purification tank, a gas inlet pipe and a gas outlet are installed at the top of the purification tank, and a liquid outlet is installed at the bottom of the purification tank; a vertical plate is installed in the purification tank and divides the main purification chamber and the auxiliary purification chamber, the bottom of the main purification chamber is communicated with the bottom of the auxiliary purification chamber, the air inlet pipe is communicated with the first branch pipe and the second branch pipe, a main pressing plate and an auxiliary pressing plate are installed in the main purification chamber and the auxiliary purification chamber respectively, and a refrigeration pipe is installed at the bottom of the purification tank. When the device is used, a motor controls a lifting rod to move upwards, a lower plug plugs a first branch pipe, a second branch pipe communicates with an air inlet pipe, a main pressing plate pushes a solvent in a main purification chamber into an auxiliary purification chamber through a base solution chamber, in the process, a refrigeration pipe in the base solution chamber runs and cools the solvent passing through the base solution chamber, and the solvent is cooled; and sulfurous acid decomposition is effectively avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of sintering fume purification, and in particular relates to a sintering machine fume purification device and method. Background Art

[0002] Sintering machine is an important metallurgical equipment, widely used in steel, nonferrous metals and non-metallic mining industries. It is mainly used to heat powder ore or granular raw materials at high temperature to make the particles combine to form a solid agglomerate, so as to obtain the desired finished product.

[0003] The sintering machine will generate flue gas when in use. The flue gas is mainly composed of sulfur dioxide, nitrogen oxides, solid particles and organic pollutants. The most common purification method in the prior art is to directly pass the flue gas into an organic solvent, such as the patent with announcement number CN211799948U.

[0004] During the flue gas treatment process, sulfur dioxide, the main component of the flue gas, reacts with water in the solvent to generate sulfurous acid, thereby purifying the flue gas. However, the temperature of the flue gas discharged by the sintering machine is relatively high, generally around 120-180°C. During the reaction of sulfur dioxide with water in the organic solvent, the heat of the flue gas will be transferred to the organic solvent at the same time, causing the solvent temperature to rise. As the solvent temperature rises, sulfurous acid decomposes into sulfur dioxide and water, reducing the purification efficiency of the equipment and easily causing sulfur dioxide to be discharged into the air, causing air pollution. Summary of the invention

[0005] The purpose of the present invention is to provide a liquid fuel sensor device to solve the technical problems in the prior art in view of the shortcomings of the prior art.

[0006] The object of the present invention can be achieved by the following technical scheme: a sintering machine fume purification device, which includes a purification tank and a base installed at the bottom of the purification tank, an air inlet pipe and an exhaust port are installed at the top of the purification tank, a liquid discharge port is installed at the bottom of the purification tank, and a liquid inlet is installed on the purification tank; A partition plate is fixedly installed inside the purification tank, and the partition plate divides the purification tank into an exhaust chamber and a purification zone. The liquid inlet is installed in the purification zone, and organic solvent is added to the purification zone through the liquid inlet. The purification zone includes a main purification chamber and an auxiliary purification chamber. A vertical plate is installed in the purification tank, and the vertical plate separates the main purification chamber from the auxiliary purification chamber. The main purification chamber is connected to the bottom of the auxiliary purification chamber. The air inlet pipe is connected to branch pipe one and branch pipe two respectively, and branch pipe one and branch pipe two extend into the main purification chamber and the auxiliary purification chamber respectively. A main pressure plate and an auxiliary pressure plate are respectively installed in the main purification chamber and the auxiliary purification chamber, and the main pressure plate and the auxiliary pressure plate are located above the solvent liquid surface. A motor is installed on the partition plate, and the motor drives the main pressure plate and the auxiliary pressure plate to move relative to each other; A lifting rod is installed in the air inlet pipe for vertical sliding, a lower plug and an upper plug are installed on the lifting rod respectively, the lower plug and the upper plug block the lower plug and the upper plug respectively, and a refrigeration pipe is installed at the bottom of the purification tank.

[0007] As a further optimization or improvement of this solution, a transmission gear and an active bevel gear are respectively installed on the output shaft of the motor, rack two and rack one are respectively installed on the auxiliary pressure plate and the main pressure plate, and the transmission gear is respectively meshed with rack two and rack one.

[0008] As a further optimization or improvement of this solution, an internal threaded cylinder is rotatably installed on the partition plate, a driven bevel gear is installed on the internal threaded cylinder, a threaded head is installed on the lifting rod, the threaded head is transmission-connected with the internal threaded cylinder, the driving bevel gear is meshed with the driven bevel gear, and a guide strip is installed on the lifting rod, and the guide strip is slidably matched with the intake pipe.

[0009] As a further optimization or improvement of this solution, a vent hole is provided on the auxiliary pressure plate, and a perforated plate is slidably installed inside the auxiliary pressure plate. The air hole on the perforated plate overlaps with the vent hole, and the perforated plate is connected to the inner wall of the auxiliary pressure plate through connecting spring 2. An inclined pressure block is installed on the rack 2, and an inclined surface is provided at one end of the perforated plate. The inclined pressure block presses the inclined surface of the perforated plate. A rubber ring is installed at the bottom of the auxiliary pressure plate, and the main pressure plate and the auxiliary pressure plate are configured in the same manner.

[0010] As a further optimization or improvement of the present scheme, a horizontal plate is installed at the bottom of the vertical plate, and the horizontal plate divides the area at the bottom of the main purification chamber and the auxiliary purification chamber into a bottom liquid chamber. The horizontal plate has liquid holes respectively arranged in the direction toward the main purification chamber and the auxiliary purification chamber. A sliding sleeve is installed on the horizontal plate, and a baffle is slidably installed inside the sliding sleeve. The baffle is connected to the inner wall of the sliding sleeve through a connecting spring. A fully open electromagnetic suction cup and a fully closed electromagnetic suction cup are installed inside the sliding sleeve, and the fully open electromagnetic suction cup and the fully closed electromagnetic suction cup are located on both sides of the baffle. A pressure sensor is installed on the top of the sliding sleeve, and the pressure sensor is connected to the fully open electromagnetic suction cup. The liquid hole on the horizontal plate partially overlaps with the through hole on the baffle, and the refrigeration pipe is installed inside the bottom liquid chamber.

[0011] As a further optimization or improvement of the present solution, an activated carbon layer is installed on the partition plate, and the activated carbon layer is respectively located on the top of the main purification chamber and the auxiliary purification chamber.

[0012] A sintering machine fume purification method, the method is applied to the sintering machine fume purification device as described above, the method comprises the following steps: Step S1: injecting organic solvent into the main purification chamber and the auxiliary purification chamber through the liquid inlet, and then passing the sintering machine flue gas into the air inlet pipe; Step S2: Start the motor, the motor drives the lifting rod to move downward, the upper plug on the lifting rod blocks the branch pipe 2, so that the smoke enters the organic solvent inside the main purification chamber through the branch pipe 1, and at the same time, the motor drives the auxiliary pressure plate to move downward through the transmission gear and rack 2, and drives the main pressure plate to move upward through the transmission gear and rack 1; Step S3: When the motor drives the auxiliary pressure plate to move downward through the rack 2, the inclined pressure block on the rack 2 will first press the inclined surface on the perforated plate and drive the perforated plate to move in the slide groove of the auxiliary pressure plate, so that the air holes and the vent holes on the perforated plate are staggered, so that the perforated plate blocks the vent holes on the auxiliary pressure plate. At this time, the vent holes on the auxiliary pressure plate are in a sealed state; Step S4: the rack 2 drives the auxiliary pressure plate to push the organic solvent in the auxiliary purification chamber through the bottom liquid chamber to the main purification chamber. At the same time, as the main pressure plate moves up, the vent holes on the main pressure plate are in a ventilation state; when the flue gas enters the main purification chamber through the branch pipe 1, the solvent liquid level in the main purification chamber increases, and the contact time between the flue gas in the branch pipe 1 and the solvent in the main purification chamber increases; Step S5: When the temperature of the solvent rises, the motor controls the lifting rod to move upward. As the lifting rod moves upward, the lower plug blocks branch pipe one, and branch pipe two is connected to the air inlet pipe. At the same time, the main pressure plate pushes the solvent inside the main purification chamber into the auxiliary purification chamber through the bottom liquid chamber. During this process, the refrigeration pipe inside the bottom liquid chamber runs and cools down the solvent passing through the bottom liquid chamber, thereby cooling the solvent and effectively avoiding the decomposition of sulfurous acid.

[0013] As a further optimization or improvement of this solution, step S5 specifically includes the following steps: Step S51: When the main pressure plate presses the solvent inside the main purification chamber downward, the pressure sensor on the horizontal plate close to one side of the main purification chamber detects that the water pressure inside the main purification chamber increases. When the water pressure reaches a specified value, the pressure sensor controls the fully-open electromagnetic suction cup to start, and the fully-open electromagnetic suction cup absorbs the baffle plate. At this time, the through hole on the baffle plate completely overlaps with the liquid through hole on the horizontal plate. In this state, the solvent, solid particles and sediment can all enter the bottom liquid chamber through the horizontal plate; Step S52: When the main pressure plate presses the solvent inside the main purification chamber downward, the pressure detected by the pressure sensor on the horizontal plate close to the auxiliary purification chamber does not reach the specified value. At this time, the liquid through hole on the horizontal plate partially overlaps with the through hole on the baffle plate. In this state, the solvent can pass through the horizontal plate, but the solid particles and precipitation in the solvent cannot pass through the horizontal plate. Step S53: Under the pressure of the main pressure plate, the solvent enters the auxiliary purification chamber through the bottom liquid chamber, and the solid particles in the solvent will be blocked in the bottom liquid chamber, achieving the effect of filtering the solvent.

[0014] Beneficial effects of the present invention: (1) As the heat of the flue gas is transferred to the solvent, the temperature of the solvent gradually increases. In order to prevent sulfurous acid from decomposing into sulfur dioxide, the motor controls the lifting rod to move upward. As the lifting rod moves upward, the lower plug blocks branch pipe 1 and connects branch pipe 2 with the air intake pipe. At the same time, the main pressure plate pushes the solvent inside the main purification chamber through the bottom liquid chamber into the auxiliary purification chamber. During this process, the refrigeration pipe inside the bottom liquid chamber operates and cools the solvent passing through the bottom liquid chamber, thereby cooling the solvent and effectively preventing sulfurous acid from decomposing. Then the flue gas is transported to the cooled solvent inside the auxiliary purification chamber through the air intake pipe and branch pipe 2.

[0015] (2) In the process of the main pressure plate in the present invention pressing down the solvent inside the main purification chamber, the pressure sensor on the horizontal plate near the side of the main purification chamber detects that the water pressure inside the main purification chamber increases. When the water pressure reaches the specified value, the pressure sensor controls the fully open electromagnetic suction cup to start, and the baffle is in the second state. In this state, the solvent, solid particles and sediment can all pass through the horizontal plate into the bottom liquid chamber. The pressure detected by the pressure sensor on the horizontal plate near the side of the auxiliary purification chamber does not reach the specified value, so the baffle is in the first state. In this state, the solvent can pass through the horizontal plate, but the solid particles and sediment in the solvent cannot pass through the horizontal plate. Under the pressure of the main pressure plate, the solvent passes through the bottom liquid chamber into the auxiliary purification chamber, and the solid particles in the solvent will be blocked in the bottom liquid chamber, achieving the effect of filtering the solvent.

[0016] (3) When the flue gas enters the solvent, the organic pollutants in the flue gas, such as dioxins, dissolve in the solvent. The dissolution of dioxins in organic solvents is a dynamic equilibrium process, accompanied by the increase in the saturation of the organic solvent. When the dioxins dissolved in the solvent pass through the bottom liquid chamber, the refrigeration pipe inside the bottom liquid chamber cools the solvent, breaking the dynamic dissolution process of the dioxins, and precipitates some of the dioxins from the solution. The precipitated dioxins are blocked inside the bottom liquid chamber. Start the fully closed electromagnetic suction cup to adjust the baffle to the third state. In this state, the baffle blocks the horizontal plate, and then the separated precipitates and solid particles inside the bottom liquid chamber are discharged through the drain port at the bottom of the bottom liquid chamber, thereby improving the utilization rate and dissolution efficiency of the organic solvent and avoiding solvent waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0020] Figure 3 It is a structural explosion diagram of the present invention.

[0021] Figure 4 Schematic diagram of the internal structure of the intake pipe.

[0022] Figure 5 for Figure 4 A magnified view of the structure of part A.

[0023] Figure 6 This is a schematic diagram of the transmission connection of the motor.

[0024] Figure 7 for Figure 6 Enlarged view of the structure of part B.

[0025] Figure 8 Schematic diagram of the internal structure of the auxiliary pressure plate.

[0026] Fig. 9 Schematic diagram of the horizontal plate structure.

[0027] Fig.10 Schematic diagram of the internal structure of the sleeve.

[0028] Fig.11 It is a schematic diagram of the working state of the present invention.

[0029] The following are marked in the figure: 1. Purification tank; 101. Exhaust chamber; 102. Main purification chamber; 103. Bottom liquid chamber; 104. Auxiliary purification chamber; 2. Base; 3. Air inlet; 4. Exhaust port; 5. Liquid inlet; 6. Liquid outlet; 7. Partition plate; 8. Vertical plate; 9. Horizontal plate; 11. Branch pipe 1; 12. Branch pipe 2; 13. Activated carbon layer; 14. Motor; 15. Transmission gear; 16. Active bevel gear; 17. Driven bevel gear; 18. Internal threaded barrel; 19. Threaded head ; 20. Lifting rod; 21. Lower plug; 22. Guide strip; 23. Upper plug; 24. Rack 1; 25. Rack 2; 27. Auxiliary pressure plate; 28. Main pressure plate; 29. ​​Liquid hole; 30. Sliding sleeve; 31. Baffle; 32. Refrigeration pipe; 33. Pressure sensor; 34. Fully open electromagnetic suction cup; 35. Connecting spring 1; 36. Rubber ring; 37. Vent; 38. Perforated plate; 39. Connecting spring 2; 40. Inclined pressure block; 41. Fully closed electromagnetic suction cup. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 8A sintering machine flue gas purification device comprises a purification tank 1 and a base 2 installed at the bottom of the purification tank 1, an air inlet pipe 3 and an exhaust port 4 are installed on the top of the purification tank 1, a liquid discharge port 6 is installed at the bottom of the purification tank 1, and a liquid inlet 5 is installed on the purification tank 1; a partition plate 7 is fixedly installed inside the purification tank 1, and the partition plate 7 divides the purification tank 1 into an exhaust chamber 101 and a purification area, and the liquid inlet 5 is installed in the purification area, and an organic solvent is added to the purification area through the liquid inlet 5. The purification area includes a main purification chamber 102 and an auxiliary purification chamber 104, and a vertical plate 8 is installed in the purification tank 1, and the vertical plate 8 separates the main purification chamber 102 and the auxiliary purification chamber 104, and the main purification chamber 102 is connected to the bottom of the auxiliary purification chamber 104, The air inlet pipe 3 is connected with branch pipe 1 11 and branch pipe 2 12 respectively, and branch pipe 1 11 and branch pipe 2 12 extend into the main purification chamber 102 and the auxiliary purification chamber 104 respectively, and the main pressure plate 28 and the auxiliary pressure plate 27 are respectively installed in the main purification chamber 102 and the auxiliary purification chamber 104, and the main pressure plate 28 and the auxiliary pressure plate 27 are located above the solvent liquid surface, and the motor 14 is installed on the partition plate 7, and the motor 14 drives the main pressure plate 28 and the auxiliary pressure plate 27 to move relative to each other; the lifting rod 20 is vertically slidably installed in the air inlet pipe 3, and the lower plug 21 and the upper plug 23 are respectively installed on the lifting rod 20, and the lower plug 21 and the upper plug 23 respectively block the lower plug 21 and the upper plug 23, and a refrigeration pipe 32 is installed at the bottom of the purification tank 1.

[0032] Specifically, the transmission gear 15 and the active bevel gear 16 are respectively installed on the output shaft of the motor 14, and the rack 25 and the rack 1 24 are respectively installed on the auxiliary pressure plate 27 and the main pressure plate 28, and the transmission gear 15 is meshed with the rack 25 and the rack 1 24 respectively.

[0033] Specifically, an internal threaded cylinder 18 is rotatably installed on the partition plate 7, a driven bevel gear 17 is installed on the internal threaded cylinder 18, a threaded head 19 is installed on the lifting rod 20, the threaded head 19 is transmission-connected with the internal threaded cylinder 18, the driving bevel gear 16 is meshed with the driven bevel gear 17, a guide bar 22 is installed on the lifting rod 20, and the guide bar 22 is slidably matched with the intake pipe 3.

[0034] Specifically, a vent hole 37 is provided on the auxiliary pressure plate 27, and a perforated plate 38 is slidably installed in the auxiliary pressure plate 27. The air holes on the perforated plate 38 overlap with the vent holes 37. The perforated plate 38 is connected to the inner wall of the auxiliary pressure plate 27 through a connecting spring 239. An inclined pressure block 40 is installed on the rack 25. An inclined surface is provided at one end of the perforated plate 38. The inclined pressure block 40 presses the inclined surface of the perforated plate 38. A rubber ring 36 is installed at the bottom of the auxiliary pressure plate 27. The main pressure plate 28 and the auxiliary pressure plate 27 are configured in the same manner.

[0035] It should be noted that, when in use, an organic solvent is injected into the main purification chamber 102 and the auxiliary purification chamber 104 through the liquid inlet 5, and then the sintering machine fume is introduced into the air inlet pipe 3. Figure 5 and Figure 7 , start the motor 14, the motor 14 drives the lifting rod 20 to move downward, and the upper plug 23 on the lifting rod 20 blocks the branch pipe 2 12, so that the smoke enters the organic solvent inside the main purification chamber 102 through the branch pipe 1 11.

[0036] The motor 14 also drives the auxiliary pressure plate 27 to move downward and the main pressure plate 28 to move upward. When the rack 25 drives the auxiliary pressure plate 27 to move downward, the inclined pressure block 40 on the rack 25 will first press the inclined surface on the perforated plate 38 and drive the perforated plate 38 to move in the slide groove of the auxiliary pressure plate 27, so that the air holes on the perforated plate 38 are staggered with the vent holes 37, so that the perforated plate 38 blocks the vent holes 37 on the auxiliary pressure plate 27. At this time, the vent holes 37 on the auxiliary pressure plate 27 are in a sealed state. Fig.11 , the rack 25 drives the auxiliary pressure plate 27 to push the organic solvent in the auxiliary purification chamber 104 to the main purification chamber 102 through the bottom liquid chamber 103. At the same time, as the main pressure plate 28 moves upward, the vent hole 37 on the main pressure plate 28 is in a ventilated state. When the flue gas enters the main purification chamber 102 through the branch pipe 11, the solvent liquid level in the main purification chamber 102 increases, and the contact time between the flue gas in the branch pipe 11 and the solvent in the main purification chamber 102 increases, ensuring that the sulfur dioxide in the flue gas can react thoroughly with the moisture in the solvent, thereby improving the flue gas purification efficiency.

[0037] As the heat of the flue gas is transferred to the solvent, the temperature of the solvent gradually increases. In order to prevent sulfurous acid from decomposing into sulfur dioxide, the motor 14 controls the lifting rod 20 to move upward. Figure 5 As the lifting rod 20 moves upward, the lower plug 21 blocks the branch pipe 11 and connects the branch pipe 2 12 with the intake pipe 3. Fig.11 At the same time, the main pressure plate 28 pushes the solvent in the main purification chamber 102 through the bottom liquid chamber 103 to the auxiliary purification chamber 104. During this process, the refrigeration pipe 32 in the bottom liquid chamber 103 operates and cools the solvent passing through the bottom liquid chamber 103, thereby cooling the solvent and effectively avoiding the decomposition of sulfurous acid. Then the flue gas is transported to the cooled solvent in the auxiliary purification chamber 104 through the intake pipe 3 and the branch pipe 12.

[0038] See also Figure 9-11A transverse plate 9 is installed at the bottom of the vertical plate 8, and the transverse plate 9 divides the area at the bottom of the main purification chamber 102 and the auxiliary purification chamber 104 into a bottom liquid chamber 103. The transverse plate 9 is provided with liquid holes 29 in the direction toward the main purification chamber 102 and the auxiliary purification chamber 104, respectively. A sliding sleeve 30 is installed on the transverse plate 9, and a baffle 31 is slidably installed inside the sliding sleeve 30. The baffle 31 is connected to the inner wall of the sliding sleeve 30 through a connecting spring 1 35. A fully open electromagnetic suction cup 34 and a fully closed electromagnetic suction cup 41 are installed inside the sliding sleeve 30. The fully open electromagnetic suction cup 34 and the fully closed electromagnetic suction cup 41 are located on both sides of the baffle 31. A pressure sensor 33 is installed on the top of the sliding sleeve 30, and the pressure sensor 33 is connected to the fully open electromagnetic suction cup 34. The liquid hole 29 on the transverse plate 9 partially overlaps with the through hole on the baffle 31, and the refrigeration pipe 32 is installed inside the bottom liquid chamber 103.

[0039] Specifically, an activated carbon layer 13 is installed on the partition plate 7 , and the activated carbon layer 13 is located at the top of the main purification chamber 102 and the auxiliary purification chamber 104 , respectively.

[0040] It should be noted that the spoiler 31 has three states, the first state is the initial state, see Fig.10 , at this time, the liquid through hole 29 on the horizontal plate 9 partially overlaps with the through hole on the baffle plate 31. In this state, the solvent can pass through the horizontal plate 9, but the solid particles and sediment in the solvent cannot pass through the horizontal plate 9; the second state is that the pressure sensor 33 is pressurized. When the pressure sensor 33 detects the pressure, the pressure sensor 33 controls the fully open electromagnetic suction cup 34 to start, and the fully open electromagnetic suction cup 34 adsorbs the baffle plate 31. At this time, the through hole on the baffle plate 31 completely overlaps with the liquid through hole 29 on the horizontal plate 9. In this state, the solvent, solid particles and sediment can all pass through the horizontal plate 9; the third state, when it is necessary to remove the solid particles and sediment inside the bottom liquid chamber 103, the fully closed electromagnetic suction cup 41 is started, and the fully closed electromagnetic suction cup 41 adsorbs the baffle plate 31. At this time, the through hole on the baffle plate 31 is completely staggered with the liquid through hole 29 on the horizontal plate 9, and the baffle plate 31 blocks the horizontal plate 9, and the solid particles and sediment inside the bottom liquid chamber 103 are removed through the drain port 6.

[0041] It should be noted that organic solvents have higher costs than aqueous solutions. When solid particles in the flue gas enter the solvent along with the flue gas, the solvent gradually becomes turbid as the solid particles are discharged, affecting the solvent absorption. Therefore, the solvent needs to be replaced frequently, which leads to waste. Organic pollutants in the flue gas dissolve in the solvent. When the flue gas enters the solvent, the organic pollutants in the flue gas dissolve in the solvent, such as dioxins. When the content of organic pollutants in the flue gas is high, the solvent is easily oversaturated, resulting in the solvent being unable to effectively absorb the pollutants.

[0042] In the process of the main pressing plate 28 in the present invention pressing down the solvent inside the main purification chamber 102, see Fig.10 and Fig.11The pressure sensor 33 on the horizontal plate 9 near the main purification chamber 102 detects the increase in water pressure inside the main purification chamber 102. When the water pressure reaches the specified value, (see Fig.10 , since the pressure sensor 33 is located at the top of the sliding sleeve 30, when the main pressure plate 28 presses down the solvent inside the main purification chamber 102, the pressure of the solvent on the pressure sensor 33 increases) the pressure sensor 33 controls the fully open electromagnetic suction cup 34 to start, and the baffle 31 is in the second state, in which the solvent, solid particles and sediment can all enter the bottom liquid chamber 103 through the cross plate 9. The pressure detected by the pressure sensor 33 on the cross plate 9 close to the side of the auxiliary purification chamber 104 does not reach the specified value, so the baffle 31 is in the first state, in which the solvent can pass through the cross plate 9, but the solid particles and sediment in the solvent cannot pass through the cross plate 9. Under the pressure of the main pressure plate 28, the solvent enters the auxiliary purification chamber 104 through the bottom liquid chamber 103, and the solid particles in the solvent will be blocked in the bottom liquid chamber 103, achieving the effect of filtering the solvent.

[0043] Specifically, when the flue gas enters the solvent, the organic pollutants in the flue gas, such as dioxins, are dissolved in the solvent. The dissolution of dioxins in the organic solvent is a dynamic equilibrium process, accompanied by the increase in the saturation of the organic solvent. When the dioxins dissolved in the solvent pass through the bottom liquid chamber 103, the refrigeration pipe 32 inside the bottom liquid chamber 103 cools the solvent, breaking the dynamic dissolution process of the dioxins, and precipitating part of the dioxins from the solution. The precipitated dioxins are blocked inside the bottom liquid chamber 103. The fully closed electromagnetic chuck 41 is started to adjust the baffle plate 31 to the third state, in which the baffle plate 31 blocks the horizontal plate 9, and then the separated precipitates and solid particles inside the bottom liquid chamber 103 are discharged through the drain port 6 at the bottom of the bottom liquid chamber 103, thereby improving the utilization rate and dissolution efficiency of the organic solvent and avoiding solvent waste.

[0044] It should be noted that the pressure sensor 33 can be replaced by a liquid level sensor, that is, the liquid level sensor is used to detect whether the water level drops to control the fully open electromagnetic suction cup 34 to start.

[0045] See also Figure 1-Figure 8 As shown, the present invention is a sintering machine fume purification method, which is applied to the sintering machine fume purification device as described in the above embodiment, and the method comprises the following steps: Step S1: injecting an organic solvent into the main purification chamber 102 and the auxiliary purification chamber 104 through the liquid inlet 5, and then passing the sintering machine flue gas into the air inlet pipe 3; Step S2: start the motor 14, the motor 14 drives the lifting rod 20 to move downward, and the upper plug 23 on the lifting rod 20 blocks the branch pipe 12, so that the smoke enters the organic solvent inside the main purification chamber 102 through the branch pipe 11, and at the same time, the motor 14 drives the auxiliary pressure plate 27 to move downward through the transmission gear 15 and the rack 25, and drives the main pressure plate 28 to move upward through the transmission gear 15 and the rack 1 24; Step S3: When the motor 14 drives the auxiliary pressure plate 27 to move downward through the rack 25, the inclined pressure block 40 on the rack 25 will first press the inclined surface on the perforated plate 38 and drive the perforated plate 38 to move in the slide groove of the auxiliary pressure plate 27, so that the air holes on the perforated plate 38 are staggered with the vent holes 37, so that the perforated plate 38 blocks the vent holes 37 on the auxiliary pressure plate 27. At this time, the vent holes 37 on the auxiliary pressure plate 27 are in a sealed state; Step S4: the rack 25 drives the auxiliary pressure plate 27 to push the organic solvent in the auxiliary purification chamber 104 to the main purification chamber 102 through the bottom liquid chamber 103. At the same time, as the main pressure plate 28 moves upward, the vent hole 37 on the main pressure plate 28 is in a ventilation state; when the flue gas enters the main purification chamber 102 through the branch pipe 11, the solvent liquid level in the main purification chamber 102 increases, and the contact time between the flue gas in the branch pipe 11 and the solvent in the main purification chamber 102 increases; Step S5: When the temperature of the solvent rises, the motor 14 controls the lifting rod 20 to move upward. As the lifting rod 20 moves upward, the lower plug 21 blocks the branch pipe 11, and the branch pipe 2 12 is connected to the air intake pipe 3. At the same time, the main pressure plate 28 pushes the solvent inside the main purification chamber 102 into the auxiliary purification chamber 104 through the bottom liquid chamber 103. During this process, the refrigeration pipe 32 inside the bottom liquid chamber 103 runs and cools down the solvent passing through the bottom liquid chamber 103, thereby cooling the solvent and effectively avoiding the decomposition of sulfurous acid.

[0046] like Figure 9-11 As shown, as a preferred embodiment of the present invention, step S5 specifically includes the following steps: Step S51: When the main pressure plate 28 presses the solvent inside the main purification chamber 102 downward, the pressure sensor 33 on the horizontal plate 9 close to the side of the main purification chamber 102 detects that the water pressure inside the main purification chamber 102 increases. When the water pressure reaches the specified value, the pressure sensor 33 controls the fully open electromagnetic suction cup 34 to start, and the fully open electromagnetic suction cup 34 adsorbs the baffle plate 31. At this time, the through hole on the baffle plate 31 completely overlaps with the liquid through hole 29 on the horizontal plate 9. In this state, the solvent, solid particles and sediment can all enter the bottom liquid chamber 103 through the horizontal plate 9; Step S52: When the main pressure plate 28 presses the solvent inside the main purification chamber 102 downward, the pressure detected by the pressure sensor 33 on the horizontal plate 9 close to the auxiliary purification chamber 104 does not reach the specified value. At this time, the liquid through hole 29 on the horizontal plate 9 partially overlaps with the through hole on the baffle plate 31. In this state, the solvent can pass through the horizontal plate 9, but the solid particles and precipitation in the solvent cannot pass through the horizontal plate 9; Step S53: Under the pressure of the main pressure plate 28, the solvent enters the auxiliary purification chamber 104 through the bottom liquid chamber 103, and the solid particles in the solvent will be blocked in the bottom liquid chamber 103, thereby achieving the effect of filtering the solvent.

[0047] The implementation principle of the present invention is: when in use, an organic solvent is injected into the main purification chamber 102 and the auxiliary purification chamber 104 through the liquid inlet 5, and then the sintering machine smoke is introduced into the air inlet pipe 3, see Figure 5 and Figure 7 , start the motor 14, and the motor 14 drives the internal threaded barrel 18 to rotate through the active bevel gear 16 and the driven bevel gear 17. Under the action of the threaded cooperation between the internal threaded barrel 18 and the threaded head 19, the motor 14 drives the lifting rod 20 to move downward, and the upper plug 23 on the lifting rod 20 blocks the branch pipe 2 12, so that the smoke enters the organic solvent inside the main purification chamber 102 through the branch pipe 1 11.

[0048] Specifically, when the motor 14 is started, the motor 14 drives the auxiliary pressure plate 27 and the main pressure plate 28 to move relative to each other through the transmission relationship between the transmission gear 15 and the rack 25 and the rack 1 24, see Fig.11 The motor 14 drives the auxiliary pressure plate 27 to move downward and drives the main pressure plate 28 to move upward. In the process of the rack 25 driving the auxiliary pressure plate 27 to move downward, under the action of the rubber ring 36, the auxiliary pressure plate 27 is suspended on the solvent inside the auxiliary purification chamber 104. Figure 8 When the rack 25 presses the secondary pressure plate 27, the inclined pressure block 40 on the rack 25 will first press the inclined surface on the perforated plate 38 and drive the perforated plate 38 to move in the slide groove of the secondary pressure plate 27, so that the air holes on the perforated plate 38 are staggered with the vent holes 37, so that the perforated plate 38 blocks the vent holes 37 on the secondary pressure plate 27. At this time, the vent holes 37 on the secondary pressure plate 27 are in a sealed state. Fig.11 , the rack 25 drives the auxiliary pressure plate 27 to push the organic solvent in the auxiliary purification chamber 104 through the bottom liquid chamber 103 to the main purification chamber 102. At the same time, as the main pressure plate 28 moves upward, the vent 37 on the main pressure plate 28 is in a ventilated state. When the auxiliary pressure plate 27 and the main pressure plate 28 stop moving, according to the principle of communicating vessels, the solvent in the auxiliary purification chamber 104 pushes the auxiliary pressure plate 27 upward, so that the vent 37 on the auxiliary pressure plate 27 remains in a sealed state, and the auxiliary pressure plate 27 is kept in a sealed state. Fig.11 The liquid level status.

[0049] See also Fig.11When the flue gas enters the main purification chamber 102 through the branch pipe 11, the solvent liquid level inside the main purification chamber 102 increases, and the contact time between the flue gas inside the branch pipe 11 and the solvent inside the main purification chamber 102 increases, ensuring that the sulfur dioxide in the flue gas can react thoroughly with the moisture in the solvent, thereby improving the purification efficiency of the flue gas. The purified flue gas is discharged through the main pressure plate 28, and then passes through the activated carbon layer 13 on the partition plate 7 for secondary purification, and then is discharged from the exhaust port 4.

[0050] As the heat of the flue gas is transferred to the solvent, the temperature of the solvent gradually increases. In order to prevent sulfurous acid from decomposing into sulfur dioxide, the motor 14 controls the lifting rod 20 to move upward. Figure 5 As the lifting rod 20 moves upward, the lower plug 21 blocks the branch pipe 11 and connects the branch pipe 2 12 with the intake pipe 3. Fig.11 At the same time, the main pressure plate 28 pushes the solvent in the main purification chamber 102 through the bottom liquid chamber 103 to the auxiliary purification chamber 104. During this process, the refrigeration pipe 32 in the bottom liquid chamber 103 operates and cools the solvent passing through the bottom liquid chamber 103, thereby cooling the solvent and effectively avoiding the decomposition of sulfurous acid. Then the flue gas is transported to the cooled solvent in the auxiliary purification chamber 104 through the intake pipe 3 and the branch pipe 12.

[0051] Specifically, during the process of the main pressure plate 28 pressing down the solvent inside the main purification chamber 102, see Fig.10 and Fig.11 The pressure sensor 33 on the horizontal plate 9 near the main purification chamber 102 detects the increase in water pressure inside the main purification chamber 102. When the water pressure reaches the specified value, (see Fig.10 , since the pressure sensor 33 is located at the top of the sliding sleeve 30, when the main pressure plate 28 presses down the solvent inside the main purification chamber 102, the pressure of the solvent on the pressure sensor 33 increases) the pressure sensor 33 controls the fully open electromagnetic suction cup 34 to start, and the baffle 31 is in the second state, in which the solvent, solid particles and sediment can all enter the bottom liquid chamber 103 through the cross plate 9. The pressure detected by the pressure sensor 33 on the cross plate 9 close to the side of the auxiliary purification chamber 104 does not reach the specified value, so the baffle 31 is in the first state, in which the solvent can pass through the cross plate 9, but the solid particles and sediment in the solvent cannot pass through the cross plate 9. Under the pressure of the main pressure plate 28, the solvent enters the auxiliary purification chamber 104 through the bottom liquid chamber 103, and the solid particles in the solvent will be blocked in the bottom liquid chamber 103, achieving the effect of filtering the solvent.

[0052] Specifically, when the flue gas enters the solvent, the organic pollutants in the flue gas, such as dioxins, are dissolved in the solvent. The dissolution of dioxins in the organic solvent is a dynamic equilibrium process, accompanied by the increase in the saturation of the organic solvent. When the dioxins dissolved in the solvent pass through the bottom liquid chamber 103, the refrigeration pipe 32 inside the bottom liquid chamber 103 cools the solvent, breaking the dynamic dissolution process of the dioxins, and precipitating part of the dioxins from the solution. The precipitated dioxins are blocked inside the bottom liquid chamber 103. The fully closed electromagnetic chuck 41 is started to adjust the baffle plate 31 to the third state, in which the baffle plate 31 blocks the horizontal plate 9, and then the separated precipitates and solid particles inside the bottom liquid chamber 103 are discharged through the drain port 6 at the bottom of the bottom liquid chamber 103, thereby improving the utilization rate and dissolution efficiency of the organic solvent and avoiding solvent waste.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A sintering machine flue gas purification device, characterized in that: The purification tank (1) comprises a purification tank (1) and a base (2) installed at the bottom of the purification tank (1), an air inlet pipe (3) and an air outlet (4) are installed at the top of the purification tank (1), a liquid discharge outlet (6) is installed at the bottom of the purification tank (1), and a liquid inlet (5) is installed on the top of the purification tank (1); A partition plate (7) is fixedly installed inside the purification tank (1), and the partition plate (7) divides the purification tank (1) into an exhaust chamber (101) and a purification zone. The liquid inlet (5) is installed in the purification zone, and organic solvent is added to the purification zone through the liquid inlet (5). The purification zone includes a main purification chamber (102) and an auxiliary purification chamber (104). A vertical plate (8) is installed in the purification tank (1), and the vertical plate (8) separates the main purification chamber (102) and the auxiliary purification chamber (104). The main purification chamber (102) is connected to the auxiliary purification chamber (104) at the bottom. The air inlet pipe (3) is connected to branch pipe one (11) and branch pipe two (12) respectively. Branch pipe one (11) and branch pipe two (12) extend into the main purification chamber (102) and the auxiliary purification chamber (104) respectively. A main pressure plate (28) and an auxiliary pressure plate (27) are respectively installed in the main purification chamber (102) and the auxiliary purification chamber (104). The main pressure plate (28) and the auxiliary pressure plate (27) are located above the solvent liquid surface. A motor (14) is installed on the partition plate (7). The motor (14) drives the main pressure plate (28) and the auxiliary pressure plate (27) to move relative to each other. A lifting rod (20) is vertically slidably installed in the air inlet pipe (3), a lower plug (21) and an upper plug (23) are respectively installed on the lifting rod (20), the lower plug (21) and the upper plug (23) respectively block the lower plug (21) and the upper plug (23), and a refrigeration pipe (32) is installed at the bottom of the purification tank (1).

2. The sintering machine fume purification device according to claim 1, characterized in that: A transmission gear (15) and an active bevel gear (16) are respectively mounted on the output shaft of the motor (14); a second rack (25) and a first rack (24) are respectively mounted on the auxiliary pressure plate (27) and the main pressure plate (28); and the transmission gear (15) is respectively meshed with the second rack (25) and the first rack (24).

3. The sintering machine fume purification device according to claim 2, characterized in that: An internal threaded cylinder (18) is rotatably mounted on the partition plate (7), a driven bevel gear (17) is mounted on the internal threaded cylinder (18), a threaded head (19) is mounted on the lifting rod (20), the threaded head (19) is transmission-connected to the internal threaded cylinder (18), the driving bevel gear (16) is meshed with the driven bevel gear (17), a guide bar (22) is mounted on the lifting rod (20), and the guide bar (22) is slidably matched with the intake pipe (3).

4. The sintering machine fume purification device according to claim 3, characterized in that: The auxiliary pressure plate (27) is provided with a vent hole (37), and a perforated plate (38) is slidably installed in the auxiliary pressure plate (27). The vent hole on the perforated plate (38) overlaps with the vent hole (37). The perforated plate (38) is connected to the inner wall of the auxiliary pressure plate (27) through a second connecting spring (39). An inclined pressure block (40) is installed on the second rack (25). An inclined surface is provided at one end of the perforated plate (38). The inclined pressure block (40) presses the inclined surface of the perforated plate (38). A rubber ring (36) is installed at the bottom of the auxiliary pressure plate (27). The main pressure plate (28) and the auxiliary pressure plate (27) are configured in the same manner.

5. The sintering machine fume purification device according to claim 1, characterized in that: A transverse plate (9) is installed at the bottom of the vertical plate (8), and the transverse plate (9) divides the area at the bottom of the main purification chamber (102) and the auxiliary purification chamber (104) into a bottom liquid chamber (103). The transverse plate (9) is provided with liquid holes (29) in the direction toward the main purification chamber (102) and the auxiliary purification chamber (104), respectively. A sliding sleeve (30) is installed on the transverse plate (9), and a baffle plate (31) is slidably installed inside the sliding sleeve (30). The baffle plate (31) is connected to the inner wall of the sliding sleeve (30) via a connecting spring (35). Then, a fully open electromagnetic suction cup (34) and a fully closed electromagnetic suction cup (41) are installed inside the sliding sleeve (30), the fully open electromagnetic suction cup (34) and the fully closed electromagnetic suction cup (41) are located on both sides of the baffle plate (31), a pressure sensor (33) is installed on the top of the sliding sleeve (30), the pressure sensor (33) is connected to the fully open electromagnetic suction cup (34), the liquid through hole (29) on the horizontal plate (9) partially overlaps with the through hole on the baffle plate (31), and the refrigeration pipe (32) is installed inside the bottom liquid chamber (103).

6. The sintering machine fume purification device according to claim 1, characterized in that: An activated carbon layer (13) is installed on the partition plate (7), and the activated carbon layer (13) is located at the top of the main purification chamber (102) and the auxiliary purification chamber (104), respectively.

7. A sintering machine flue gas purification method, characterized in that: The method is applied to the sintering machine fume purification device as described in any one of claims 1 to 6 above, and the method comprises the following steps: Step S1: injecting an organic solvent into the main purification chamber (102) and the auxiliary purification chamber (104) through the liquid inlet (5), and then passing the sintering machine flue gas into the air inlet pipe (3); Step S2: starting the motor (14), the motor (14) drives the lifting rod (20) to move downward, and the upper plug (23) on the lifting rod (20) blocks the branch pipe 2 (12), so that the smoke enters the organic solvent inside the main purification chamber (102) through the branch pipe 1 (11), and at the same time, the motor (14) drives the auxiliary pressure plate (27) to move downward through the transmission gear (15) and the rack 2 (25), and drives the main pressure plate (28) to move upward through the transmission gear (15) and the rack 1 (24); Step S3: When the motor (14) drives the auxiliary pressure plate (27) to move downward via the rack (25), the inclined pressure block (40) on the rack (25) first presses the inclined surface on the perforated plate (38) and drives the perforated plate (38) to move in the slide groove of the auxiliary pressure plate (27), so that the air holes on the perforated plate (38) and the air holes (37) are staggered, so that the perforated plate (38) blocks the air holes (37) on the auxiliary pressure plate (27). At this time, the air holes (37) on the auxiliary pressure plate (27) are in a sealed state; Step S4: the second rack (25) drives the secondary pressure plate (27) to push the organic solvent in the secondary purification chamber (104) into the main purification chamber (102) through the bottom liquid chamber (103). At the same time, as the main pressure plate (28) moves upward, the vent hole (37) on the main pressure plate (28) is in a ventilation state; when the smoke enters the main purification chamber (102) through the branch pipe (11), the solvent liquid level in the main purification chamber (102) increases, and the contact time between the smoke in the branch pipe (11) and the solvent in the main purification chamber (102) increases; Step S5: When the temperature of the solvent increases, the motor (14) controls the lifting rod (20) to move upward. As the lifting rod (20) moves upward, the lower plug (21) blocks the branch pipe 1 (11), and the branch pipe 2 (12) is connected to the air inlet pipe (3). At the same time, the main pressure plate (28) pushes the solvent in the main purification chamber (102) into the auxiliary purification chamber (104) through the bottom liquid chamber (103). During this process, the refrigeration pipe (32) in the bottom liquid chamber (103) operates and cools the solvent passing through the bottom liquid chamber (103), thereby cooling the solvent and effectively avoiding the decomposition of sulfurous acid.

8. A sintering machine flue gas purification method according to claim 7, characterized in that: The step S5 specifically comprises the following steps: Step S51: During the process of the main pressure plate (28) pressing downwards the solvent inside the main purification chamber (102), the pressure sensor (33) on the horizontal plate (9) close to the side of the main purification chamber (102) detects that the water pressure inside the main purification chamber (102) increases. When the water pressure reaches a specified value, the pressure sensor (33) controls the fully open electromagnetic suction cup (34) to start, and the fully open electromagnetic suction cup (34) adsorbs the baffle plate (31). At this time, the through hole on the baffle plate (31) and the liquid through hole (29) on the horizontal plate (9) completely overlap. In this state, the solvent, solid particles and sediment can all pass through the horizontal plate (9) into the bottom liquid chamber (103); Step S52: during the process of the main pressure plate (28) pressing downward the solvent inside the main purification chamber (102), the pressure detected by the pressure sensor (33) on the horizontal plate (9) close to the side of the auxiliary purification chamber (104) does not reach the specified value. At this time, the liquid through hole (29) on the horizontal plate (9) partially overlaps with the through hole on the baffle plate (31). In this state, the solvent can pass through the horizontal plate (9), but the solid particles and precipitation in the solvent cannot pass through the horizontal plate (9); Step S53: Under the pressure of the main pressure plate (28), the solvent enters the auxiliary purification chamber (104) through the bottom liquid chamber (103), and the solid particles in the solvent are blocked in the bottom liquid chamber (103), thereby achieving the effect of filtering the solvent.

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