A rotary air preheater ammonium bisulfate heating evaporation device

Abstract

The invention discloses an ammonium bisulfate heating and evaporation device in a rotary air preheater, which relates to the technical field of heating and evaporation, and comprises an outer cover, a purification device and a scraping device. A fixing frame is fixedly installed on the top of the outer cover, a central rotor is fixedly installed on the bottom of the fixing frame, and an air inlet bin is fixedly installed on the top of the outer cover; wherein the purification device comprises an air inlet box, an air inlet pipe, a driving device, a fixing rod, an activated carbon plate, a U-shaped frame, an elastic telescopic plate, an L-shaped short rod and a limiting plate. High-temperature gas enters through the air inlet bin to decompose the attached ammonium bisulfate into ammonia and sulfuric acid. The activated carbon plate can make the adsorption more comprehensive and the adsorption effect more efficient. The air inlet box is fixedly installed on the inner wall of the fixing frame, and one end of the air inlet pipe is fixedly installed on the surface of the air inlet box to prevent the adsorption effect of the activated carbon plate from being deteriorated, resulting in chronic respiratory problems, decreased lung function and other chronic health problems in the human body.

Description

Technical Field

[0001] The invention relates to the technical field of heating evaporation, in particular to ammonium bisulfate heating evaporation equipment in a rotary air preheater. Background Art

[0002] Air preheater is a preheater that uses the waste heat of flue gas in the tail flue of the boiler to heat the air required for fuel combustion to a certain temperature. In modern power station boilers, it is an indispensable and important component. Air preheater is mainly used to improve the heat exchange performance of the boiler and reduce energy consumption.

[0003] The patent with the patent announcement number CN208671056U relates to an ammonium bisulfate heating and evaporation device in a rotary air preheater, including a rotor cover, a central rotor installed in the rotor cover and capable of rotating, a flue gas compartment located inside the central rotor, a primary air compartment located on the left side of the central rotor, and a secondary air compartment located on the right side of the central rotor. A heating compartment is provided on the side of the secondary air compartment close to the primary air compartment, a hot secondary air inlet is provided at the bottom of the heating compartment, and a secondary air cold air partition is provided between the hot secondary air inlet and the cold secondary air inlet. Within the range of the top of the heating air compartment of the air preheater, the temperature in this area of ​​the air preheater is increased by the secondary air hot air of more than 300 degrees, and the lowest temperature can reach more than 200 degrees, so that the ammonium bisulfate deposited in the area is finally gasified at high temperature and carried away by the hot air, so as to achieve the purpose of cleaning the area.

[0004] In the above patent, within the range of the top of the air preheater heating silo, the temperature in this area of ​​the air preheater is increased by the secondary hot air of more than 300 degrees, and the lowest temperature can reach more than 200 degrees, so that the ammonium bisulfate deposited in the area is finally vaporized at high temperature and carried away by the hot air, so as to achieve the purpose of cleaning the area. However, at high temperature, ammonium bisulfate decomposes into ammonia and sulfuric acid. Ammonia is a toxic gas. High concentrations of ammonia can cause pulmonary edema and dyspnea. At the same time, long-term or repeated exposure to low concentrations of ammonia may lead to chronic respiratory problems, decreased lung function and other chronic health problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an ammonium bisulfate heating and evaporation device in a rotary air preheater, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an ammonium bisulfate heating and evaporation device in a rotary air preheater, comprising an outer cover, a purification device and a scraping device, a fixing frame is fixedly installed on the top of the outer cover, a central rotor is fixedly installed on the bottom of the fixing frame, an air inlet bin is fixedly installed on the top of the outer cover, and an air outlet bin is fixedly installed on the top of the outer cover; wherein the purification device comprises an air inlet box, an air inlet pipe, a driving device, a fixing rod, an activated carbon plate, a U-shaped frame, an elastic telescopic plate, an L-shaped short rod and a limiting plate, high-temperature gas enters through the air inlet bin, and decomposes the attached ammonium bisulfate into ammonia and sulfuric acid, and the generated ammonia is drawn into the air inlet box through the air inlet pipe by the rotation of the driving device, and the fixed rod is driven to rotate while the driving device rotates, so that the adsorption can be more comprehensive and the adsorption effect can be more efficient through the activated carbon plate, and the air inlet box is fixedly installed on the fixed rod. The inner wall of the fixed frame, one end of the intake pipe is fixedly mounted on the surface of the air intake box, the other end of the intake pipe is fixedly mounted on the top of the inner wall of the fixed frame, the driving device is fixedly mounted on the inner wall of the air intake box, the fixing rod is fixedly mounted on the output end of the driving device, the activated carbon plate is slidably mounted on the surface of the fixing rod, the U-shaped frame is fixedly mounted on the surface of the activated carbon plate, the elastic telescopic plate is fixedly mounted on the inner wall of the U-shaped frame, one end of the L-shaped short rod is fixedly mounted on the free end of the elastic telescopic plate, the other end of the L-shaped short rod passes through the surface of the fixed rod, the limit plate is slidably mounted on the inner wall of the U-shaped frame, and the limit plate is manually pulled to move away from the U-shaped frame. The movement of the limit plate away from the U-shaped frame will release the limit on the free end of the elastic telescopic plate, thereby preventing the adsorption effect of the activated carbon plate from deteriorating, causing chronic respiratory problems, decreased lung function and other chronic health problems in the human body.

[0007] According to the above technical solution, a semicircular groove is provided at the free end of the elastic telescopic plate, the limit plate is in surface contact with the elastic telescopic plate, a No. 1 spring is provided between the limit plate and the U-shaped frame, and the limit plate is reset by the No. 1 spring.

[0008] According to the above technical solution, the scraping device includes a connecting plate, a long rod, a rotating shaft, a rotating plate and a triangular plate. The rotation of the central rotor drives the connecting plate to rotate, and the rotation of the connecting plate drives the long rod to rotate. The rotation of the long rod will contact the rotating plate. The connecting plate is fixedly mounted on the surface of the central rotor, the long rod is fixedly mounted on the surface of the connecting plate, the rotating shaft is rotatably mounted on the inner wall of the outer cover, the rotating plate is fixedly mounted on the top of the rotating shaft, the triangular plate is fixedly mounted on the surface of the rotating plate, and the triangular plate is in contact with the inner wall of the outer cover. A No. 1 torsion spring is arranged between the rotating shaft and the outer cover to prevent sulfuric acid from adhering to the outer cover, causing corrosion of the outer cover and affecting the service life of the equipment. The rotating shaft is reset by the No. 1 torsion spring.

[0009] According to the above technical solution, a protrusion is fixedly installed on the surface of the rotating plate, and a circular groove is fixedly installed on the inner wall of the outer cover. The circular groove is arranged under the rotating plate. The rotating plate will contact the protrusion during the downward rotation, and vibration is generated by contact with the protrusion, so that the sulfuric acid attached to the triangular plate will shake into the circular groove, thereby improving the overall recovery effect and preventing long-term adhesion from reducing the service life of the equipment.

[0010] According to the above technical scheme, it also includes a protective device and a lubricating device, the protective device includes a liquid inlet box, a connecting pipe, a circular plate, a rotating rod, a triangular block and a trapezoidal block. The rotating plate rotates downward to drive the rotating shaft to rotate downward, and the rotating shaft rotates downward to drive the triangular block to rotate downward. The triangular block rotates downward to contact the trapezoidal block. The connecting pipe is fixedly penetrated through the surface of the outer cover, the liquid inlet box is fixedly installed on the surface of the connecting pipe, the rotating rod is rotatably installed on the surface of the connecting pipe, the circular plate is fixedly installed on the surface of the rotating rod, the triangular block is fixedly installed on the surface of the rotating shaft, and the trapezoidal block is fixedly installed on the surface of the circular plate. A No. 2 torsion spring is arranged between the rotating rod and the connecting pipe to make the potassium hydroxide inside flow out. Potassium hydroxide reacts with sulfuric acid to generate water and corresponding salt, thereby preventing sulfuric acid from corroding the equipment and improving the protection effect on the equipment. The rotating rod is reset by the No. 2 torsion spring.

[0011] According to the above technical solution, a collecting pipe is fixedly passed through the surface of the outer cover, and a processing box is fixedly installed on the surface of the collecting pipe. When there is too much water inside the circular groove, it will be introduced into the processing box through the collecting pipe to centrally process the sulfuric acid after the reaction to prevent pollution.

[0012] According to the above technical scheme, the lubrication device includes a lubrication box, a slide plate, a triangular push block, a connecting rod, a hollow box, a hollow tube and oil-absorbing cotton. The rotation of the central rotor drives the connecting rod to rotate. The rotation of the connecting rod will contact the triangular push block, and the connecting rod will push the triangular push block to move upward. The lubrication box is fixedly installed at the bottom of the fixed frame, the slide plate is slidably installed on the inner wall of the lubrication box, the triangular push block is fixedly installed at the bottom of the slide plate, the connecting rod is fixedly installed at the output end of the central rotor, the hollow box is fixedly installed on the top of the inner wall of the lubrication box, the hollow tube is fixedly penetrated through the surface of the lubrication box, and the oil-absorbing cotton is fixedly installed on the surface of the hollow tube to lubricate the central rotor to prevent the bearings used in the rotary equipment from being worn or malfunctioning due to long-term operation, resulting in unstable operation of the equipment or even shutdown.

[0013] According to the above technical solution, a No. 2 spring is arranged between the slide plate and the lubrication box, an oil inlet hole is opened on the surface of the hollow box, the triangular push block is in contact with the surface of the connecting rod, the oil-absorbing cotton is in contact with the surface of the central rotor, and the slide plate is driven to reset by the No. 2 spring.

[0014] The present invention provides a rotary air preheater ammonium bisulfate heating evaporation device, which has the following beneficial effects:

[0015] (1) The invention uses a vacuum device to extract the generated ammonia gas, and at the same time, it drives the activated carbon plate to rotate. The rotation makes the activated carbon plate adsorb more comprehensively and the adsorption effect more efficient. At the same time, when the activated carbon plate needs to be replaced, the limit of the limit plate is manually released, and the elastic telescopic plate drives the activated carbon plate to eject, which can increase the speed of replacing the activated carbon plate and prevent the adsorption effect of the activated carbon plate from deteriorating, causing chronic respiratory problems, decreased lung function and other chronic health problems in the human body.

[0016] (2) This invention drives the long rod to rotate by rotating the central rotor, and uses the long rod to scrape off the sulfuric acid adsorbed on the inner wall of the outer cover, thereby preventing the sulfuric acid from adhering to the outer cover for a long time and causing corrosion of the outer cover, which affects the service life of the equipment. At the same time, when the long rod rotates, it will contact the protrusion, and the contact with the protrusion will generate vibration, so that the sulfuric acid adhering to the surface of the rotating plate will be shaken into the circular groove, thereby improving the overall recovery effect.

[0017] (3) The invention drives the triangular block to rotate by rotating the shaft, and uses the triangular block to push the circular plate to open intermittently, so that the potassium hydroxide inside flows out. The potassium hydroxide reacts with sulfuric acid to generate water and corresponding salts, thereby preventing sulfuric acid from corroding the equipment. At the same time, when there is too much sulfuric acid inside, it will flow into the treatment box, and the sulfuric acid after the reaction will be centrally treated to prevent pollution.

[0018] (4) In the present invention, the rotation of the central rotor drives the connecting rod to rotate, and the rotation of the connecting rod pushes the lubricating oil in the lubrication box into the hollow box. When there is too much lubricating fluid in the hollow box, it will flow into the hollow tube and then adhere to the oil-absorbing cotton through the hollow tube. The oil-absorbing cotton is used to lubricate the central rotor to prevent the bearings used in the rotary equipment from wearing out or malfunctioning due to long-term operation, which may cause unstable operation of the equipment or even shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the air intake box of the present invention;

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement of part A;

[0023] Figure 5 This is a schematic diagram of the inner wall structure of the outer cover of the present invention;

[0024] Figure 6 For the present invention Figure 5 A schematic diagram of the structure of part B in the middle is enlarged;

[0025] Figure 7 It is a schematic diagram of the internal structure of the lubrication box of the present invention.

[0026] In the figure: 1. outer cover; 2. central rotor; 3. air inlet bin; 4. air outlet bin; 5. fixing frame; 61. air inlet box; 62. air inlet pipe; 63. driving device; 64. fixing rod; 65. activated carbon plate; 66. U-shaped frame; 67. elastic telescopic plate; 68. L-shaped short rod; 69. limit plate; 71. connecting plate; 72. long rod; 73. rotating shaft; 74. rotating plate; 75. triangular plate; 76. convex block; 77. circular groove; 81. liquid inlet box; 82. connecting pipe; 83. circular plate; 84. rotating rod; 85. triangular block; 86. trapezoidal block; 87. collecting pipe; 88. processing box; 91. lubrication box; 92. slide plate; 93. triangular push block; 94. connecting rod; 95. hollow box; 96. hollow pipe; 97. oil-absorbing cotton. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-6, one embodiment of the present invention is: a rotary air preheater ammonium bisulfate heating evaporation device, including an outer cover 1, a purification device and a scraping device, a fixing frame 5 is fixedly installed on the top of the outer cover 1, a central rotor 2 is fixedly installed on the bottom of the fixing frame 5, an air inlet bin 3 is fixedly installed on the top of the outer cover 1, and an air outlet bin 4 is fixedly installed on the top of the outer cover 1; wherein, the purification device includes an air inlet box 61, an air inlet pipe 62, a driving device 63, a fixing rod 64, an activated carbon plate 65, a U-shaped frame 66, an elastic expansion plate 67, an L-shaped short rod 68 and a limiting plate 69, high-temperature gas enters through the air inlet bin 3, decomposes the attached ammonium bisulfate into ammonia and sulfuric acid, and the generated ammonia is drawn into the air inlet box 61 through the air inlet pipe 62 by rotating the driving device 63, and the driving device 63 rotates while driving the fixing rod 64 to rotate, and the activated carbon plate 65 can make the adsorption more comprehensive and the adsorption effect more efficient, and the air inlet box 61 is fixedly installed on the inner wall of the fixing frame 5 One end of the intake pipe 62 is fixedly mounted on the surface of the air intake box 61, the other end of the intake pipe 62 is fixedly mounted on the top of the inner wall of the fixing frame 5, the driving device 63 is fixedly mounted on the inner wall of the air intake box 61, the fixing rod 64 is fixedly mounted on the output end of the driving device 63, the activated carbon plate 65 is slidably mounted on the surface of the fixing rod 64, the U-shaped frame 66 is fixedly mounted on the surface of the activated carbon plate 65, the elastic expansion plate 67 is fixedly mounted on the inner wall of the U-shaped frame 66, one end of the L-shaped short rod 68 is fixedly mounted on the free end of the elastic expansion plate 67, the other end of the L-shaped short rod 68 passes through the surface of the fixing rod 64, and the limiting plate 69 is slidably mounted on the inner wall of the U-shaped frame 66. By manually pulling the limiting plate 69 to move away from the U-shaped frame 66, the movement of the limiting plate 69 to move away from the U-shaped frame 66 will release the limit on the free end of the elastic expansion plate 67, thereby preventing the adsorption effect of the activated carbon plate 65 from deteriorating, causing chronic respiratory problems, decreased lung function and other chronic health problems in the human body.

[0029] A semicircular groove is formed at the free end of the elastic expansion plate 67, the limiting plate 69 is in surface contact with the elastic expansion plate 67, a No. 1 spring is arranged between the limiting plate 69 and the U-shaped frame 66, and the limiting plate 69 is reset by the No. 1 spring.

[0030] The scraping device includes a connecting plate 71, a long rod 72, a rotating shaft 73, a rotating plate 74 and a triangular plate 75. The rotation of the central rotor 2 drives the connecting plate 71 to rotate, and the rotation of the connecting plate 71 drives the long rod 72 to rotate. The rotation of the long rod 72 will contact the rotating plate 74. The connecting plate 71 is fixedly mounted on the surface of the central rotor 2, the long rod 72 is fixedly mounted on the surface of the connecting plate 71, the rotating shaft 73 is rotatably mounted on the inner wall of the outer cover 1, the rotating plate 74 is fixedly mounted on the top of the rotating shaft 73, and the triangular plate 75 is fixedly mounted on the surface of the rotating plate 74. The triangular plate 75 contacts the inner wall of the outer cover 1. A No. 1 torsion spring is arranged between the rotating shaft 73 and the outer cover 1 to prevent sulfuric acid from adhering to the outer cover 1, causing corrosion of the outer cover 1 and affecting the service life of the equipment. The rotating shaft 73 is reset by the No. 1 torsion spring.

[0031] A protrusion 76 is fixedly installed on the surface of the rotating plate 74, and a circular groove 77 is fixedly installed on the inner wall of the outer cover 1. The circular groove 77 is arranged below the rotating plate 74. The rotating plate 74 will contact the protrusion 76 during the downward rotation process, and the contact with the protrusion 76 will generate vibration, so that the sulfuric acid attached to the triangular plate 75 will be shaken into the circular groove 77, thereby improving the overall recovery effect and preventing long-term adhesion from reducing the service life of the equipment.

[0032] When the present embodiment is working, high-temperature gas enters through the air inlet bin 3, decomposes the attached ammonium bisulfate into ammonia and sulfuric acid, and the generated ammonia is drawn into the air inlet box 61 through the air inlet pipe 62 by the rotation of the driving device 63. The rotation of the driving device 63 will drive the fixed rod 64 to rotate, and the rotation of the fixed rod 64 will drive the activated carbon plate 65 to rotate. The activated carbon plate 65 can make the adsorption more comprehensive and the adsorption effect more efficient. At the same time, when the activated carbon plate 65 needs to be replaced, the limit plate 69 is manually pulled away from the U-shaped frame 66. The movement of the limit plate 69 away from the U-shaped frame 66 will release the limit on the free end of the elastic expansion plate 67. The elastic force of the free end of the elastic expansion plate 67 drives the activated carbon plate 65 to pop out quickly, thereby improving the efficiency of replacing the activated carbon plate 65 and preventing the adsorption effect of the activated carbon plate 65 from deteriorating, leading to chronic respiratory problems, decreased lung function and other chronic health problems in the human body.

[0033] The connection plate 71 is driven to rotate by the rotation of the center rotor 2, and the connection plate 71 drives the long rod 72 to rotate. The rotation of the long rod 72 will contact the rotating plate 74, and the long rod 72 will push the rotating plate 74 to rotate downward. The downward rotation of the rotating plate 74 will drive the triangular plate 75 to rotate downward. The downward rotation of the triangular plate 75 will scrape the sulfuric acid attached to the inner wall downward to prevent the sulfuric acid from adhering to the outer cover 1, causing corrosion of the outer cover 1 and affecting the service life of the equipment. At the same time, when the rotating plate 74 rotates downward, it will contact the protrusion 76, and the contact with the protrusion 76 will generate vibration, so that the sulfuric acid attached to the triangular plate 75 will shake into the circular groove 77, thereby improving the overall recovery effect and preventing long-term adhesion from reducing the service life of the equipment.

[0034] See also Figure 1-7On the basis of the above embodiment, another embodiment of the present invention further includes a protection device and a lubricating device, the protection device includes a liquid inlet box 81, a connecting pipe 82, a circular plate 83, a rotating rod 84, a triangular block 85 and a trapezoidal block 86, the rotating plate 74 rotates downward to drive the rotating shaft 73 to rotate downward, the rotating shaft 73 rotates downward to drive the triangular block 85 to rotate downward, the triangular block 85 rotates downward to contact the trapezoidal block 86, the connecting pipe 82 is fixedly penetrated through the surface of the outer cover 1, the liquid inlet box 81 is fixedly mounted on the surface of the connecting pipe 82, the rotating rod 84 is rotatably mounted on the surface of the connecting pipe 82, the circular plate 83 is fixedly mounted on the surface of the rotating rod 84, the triangular block 85 is fixedly mounted on the surface of the rotating shaft 73, the trapezoidal block 86 is fixedly mounted on the surface of the circular plate 83, and a No. 2 torsion spring is arranged between the rotating rod 84 and the connecting pipe 82 to make the internal potassium hydroxide flow out, the potassium hydroxide reacts with sulfuric acid to generate water and corresponding salt, prevents sulfuric acid from corroding the equipment, and improves the protection effect of the equipment, and the rotating rod 84 is reset by the No. 2 torsion spring.

[0035] A collecting pipe 87 is fixedly passed through the surface of the outer cover 1, and a processing box 88 is fixedly installed on the surface of the collecting pipe 87. When there is too much water inside the circular groove 77, it will be introduced into the processing box 88 through the collecting pipe 87 to centrally process the sulfuric acid after the reaction to prevent pollution.

[0036] The lubrication device includes a lubrication box 91, a slide plate 92, a triangular push block 93, a connecting rod 94, a hollow box 95, a hollow tube 96 and oil-absorbing cotton 97. The rotation of the central rotor 2 drives the connecting rod 94 to rotate. The rotation of the connecting rod 94 will contact the triangular push block 93, and the connecting rod 94 will push the triangular push block 93 to move upward. The lubrication box 91 is fixedly installed at the bottom of the fixed frame 5, the slide plate 92 is slidably installed on the inner wall of the lubrication box 91, the triangular push block 93 is fixedly installed at the bottom of the slide plate 92, the connecting rod 94 is fixedly installed at the output end of the central rotor 2, the hollow box 95 is fixedly installed on the top of the inner wall of the lubrication box 91, the hollow tube 96 is fixedly penetrated through the surface of the lubrication box 91, and the oil-absorbing cotton 97 is fixedly installed on the surface of the hollow tube 96 to lubricate the central rotor 2 to prevent the bearings used in the rotary equipment from being worn or malfunctioning due to long-term operation, resulting in unstable operation of the equipment or even shutdown.

[0037] A No. 2 spring is arranged between the slide plate 92 and the lubrication box 91, an oil inlet hole is opened on the surface of the hollow box 95, the triangular push block 93 and the connecting rod 94 are in contact with each other, the oil-absorbing cotton 97 is in contact with the surface of the central rotor 2, and the slide plate 92 is reset by the No. 2 spring.

[0038] When the present embodiment is working, the rotating plate 74 rotates downward to drive the rotating shaft 73 to rotate downward, and the rotating shaft 73 rotates downward to drive the triangular block 85 to rotate downward, and the triangular block 85 rotates downward to contact the trapezoidal block 86, and the trapezoidal block 86 is pushed by the triangular block 85 to move away from the triangular block 85, and the movement of the trapezoidal block 86 away from the triangular block 85 drives the circular plate 83 to move away from the triangular block 85, and the movement of the circular plate 83 away from the triangular block 85 opens the connecting pipe 82 to allow the potassium hydroxide inside to flow out, and the potassium hydroxide reacts with the sulfuric acid to generate water and corresponding salt, so as to prevent the sulfuric acid from corroding the equipment and improve the protection effect of the equipment. At the same time, when there is too much water in the circular groove 77, it will be introduced into the processing box 88 through the collecting pipe 87, and the sulfuric acid after the reaction will be centrally processed to prevent pollution.

[0039] The center rotor 2 rotates to drive the connecting rod 94 to rotate. The connecting rod 94 rotates and contacts the triangular push block 93. The connecting rod 94 pushes the triangular push block 93 to move upward. The upward movement of the triangular push block 93 drives the slide plate 92 to move upward. The upward movement of the slide plate 92 pushes the lubricating oil inside the lubrication box 91 upward. The lubricating oil is pushed upward and enters the hollow box 95 through the oil inlet hole. When the lubricating oil inside the hollow box 95 reaches a certain amount, it enters the hollow tube 96 and then enters the oil-absorbing cotton 97 through the hollow tube 96. At the same time, the oil-absorbing cotton 97 contacts the output end of the center rotor 2 to lubricate the center rotor 2 to prevent the bearings used in the rotary equipment from being worn or malfunctioning due to long-term operation, resulting in unstable operation of the equipment or even shutdown.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ammonium bisulfate heating and evaporation device in a rotary air preheater, comprising an outer cover (1), characterized in that: It also includes a purification device, a scraping device, a protection device and a lubrication device, wherein a fixing frame (5) is fixedly mounted on the top of the outer cover (1), a central rotor (2) is fixedly mounted on the bottom of the fixing frame (5), an air inlet bin (3) is fixedly mounted on the top of the outer cover (1), and an air outlet bin (4) is fixedly mounted on the top of the outer cover (1); The purification device comprises an air intake box (61), an air intake pipe (62), a driving device (63), a fixing rod (64), an activated carbon plate (65), a U-shaped frame (66), an elastic telescopic plate (67), an L-shaped short rod (68) and a limiting plate (69); the air intake box (61) is fixedly mounted on the inner wall of the fixing frame (5); one end of the air intake pipe (62) is fixedly mounted on the surface of the air intake box (61); the other end of the air intake pipe (62) is fixedly mounted on the top of the inner wall of the fixing frame (5); and the driving device (63) is fixedly mounted inside the air intake box (61). The fixed rod (64) is fixedly mounted on the output end of the driving device (63), the activated carbon plate (65) is slidably mounted on the surface of the fixed rod (64), the U-shaped frame (66) is fixedly mounted on the surface of the activated carbon plate (65), the elastic telescopic plate (67) is fixedly mounted on the inner wall of the U-shaped frame (66), one end of the L-shaped short rod (68) is fixedly mounted on the free end of the elastic telescopic plate (67), the other end of the L-shaped short rod (68) passes through the surface of the fixed rod (64), and the limit plate (69) is slidably mounted on the inner wall of the U-shaped frame (66); A semicircular groove is formed at the free end of the elastic expansion plate (67), the limiting plate (69) and the elastic expansion plate (67) are in surface contact, and a spring No. 1 is provided between the limiting plate (69) and the U-shaped frame (66); The scraping device comprises a connecting plate (71), a long rod (72), a rotating shaft (73), a rotating plate (74) and a triangular plate (75), wherein the connecting plate (71) is fixedly mounted on the surface of the central rotor (2), the long rod (72) is fixedly mounted on the surface of the connecting plate (71), the rotating shaft (73) is rotatably mounted on the inner wall of the outer cover (1), the rotating plate (74) is fixedly mounted on the top of the rotating shaft (73), the triangular plate (75) is fixedly mounted on the surface of the rotating plate (74), the triangular plate (75) is in contact with the inner wall of the outer cover (1), and a first torsion spring is provided between the rotating shaft (73) and the outer cover (1); A protrusion (76) is fixedly mounted on the surface of the rotating plate (74), and a circular groove (77) is fixedly mounted on the inner wall of the outer cover (1), wherein the circular groove (77) is arranged below the rotating plate (74); The protection device comprises a liquid inlet box (81), a connecting pipe (82), a circular plate (83), a rotating rod (84), a triangular block (85) and a trapezoidal block (86); the connecting pipe (82) is fixedly passed through the surface of the outer cover (1); the liquid inlet box (81) is fixedly mounted on the surface of the connecting pipe (82); the rotating rod (84) is rotatably mounted on the surface of the connecting pipe (82); the circular plate (83) is fixedly mounted on the surface of the rotating rod (84); the triangular block (85) is fixedly mounted on the surface of the rotating shaft (73); the trapezoidal block (86) is fixedly mounted on the surface of the circular plate (83); and a No. 2 torsion spring is provided between the rotating rod (84) and the connecting pipe (82); The rotating plate (74) rotates downward to drive the rotating shaft (73) to rotate downward, and the rotating shaft (73) rotates downward to drive the triangular block (85) to rotate downward. The triangular block (85) rotates downward to contact the trapezoidal block (86), so that the potassium hydroxide inside flows out. The potassium hydroxide reacts with the sulfuric acid to generate water and corresponding salt.

2. The ammonium bisulfate heating and evaporation equipment in a rotary air preheater according to claim 1, characterized in that: A collecting pipe (87) is fixedly passed through the surface of the outer cover (1), and a processing box (88) is fixedly mounted on the surface of the collecting pipe (87).

3. The ammonium bisulfate heating and evaporation equipment in a rotary air preheater according to claim 2, characterized in that: The lubrication device comprises a lubrication box (91), a slide plate (92), a triangular push block (93), a connecting rod (94), a hollow box (95), a hollow tube (96) and oil-absorbing cotton (97); the lubrication box (91) is fixedly mounted on the bottom of a fixing frame (5); the slide plate (92) is slidably mounted on the inner wall of the lubrication box (91); the triangular push block (93) is fixedly mounted on the bottom of the slide plate (92); the connecting rod (94) is fixedly mounted on the output end of the central rotor (2); the hollow box (95) is fixedly mounted on the top of the inner wall of the lubrication box (91); the hollow tube (96) is fixedly penetrated through the surface of the lubrication box (91); and the oil-absorbing cotton (97) is fixedly mounted on the surface of the hollow tube (96).

4. The ammonium bisulfate heating and evaporation equipment in a rotary air preheater according to claim 3, characterized in that: A No. 2 spring is provided between the slide plate (92) and the lubrication box (91), an oil inlet hole is provided on the surface of the hollow box (95), and the triangular push block (93) and the connecting rod (94) are in surface contact.

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