A tail gas absorption device for pyrite-based sulphuric acid production

Abstract

The application discloses a tail gas absorption device for a pyrite acid-making process and belongs to the technical field of tail gas absorption. The device comprises a tail gas treatment mechanism, an auxiliary tail gas treatment mechanism is arranged in the tail gas treatment mechanism, the tail gas treatment mechanism comprises a tail gas absorption assembly, a conveying assembly is arranged in the upper portion of the tail gas absorption assembly, and a spiral spray head is arranged in the tail gas absorption assembly. The reciprocating motion assembly is used to realize the up-down movement of the sealing plug. When the sealing plug moves downward, the spiral blade cooperates with the driving rod to drive the rotary drum sealing plate to rotate, the second through hole of the sealing plate is staggered with the first through hole, the sealing plug is sealed, the sealing plug changes the internal pressure of the tail gas absorption tank, the absorption efficiency of the absorption liquid and the tail gas is improved, the exhaust is performed only after the first through hole and the second through hole are corresponded, the residence time of the tail gas is prolonged, and the tail gas treatment operation is facilitated.

Description

Technical Field

[0001] This invention relates to the field of tail gas absorption technology, and more particularly to a tail gas absorption device used in the sulfuric acid production process from pyrite. Background Technology

[0002] In the practice of environmental protection and ecological protection engineering construction, a systematic solution has been developed for the treatment of tail gas generated from the pyrite-to-sulfuric acid production process. This solution utilizes core technologies such as chemical absorption, physical adsorption (e.g., using highly efficient activated carbon as an adsorbent), or catalytic conversion to efficiently remove harmful components such as sulfur dioxide from the tail gas, ensuring that emissions fully meet environmental standards.

[0003] In the process of exhaust gas absorption, the performance of the absorption device is crucial. However, traditional exhaust gas absorption devices have many limitations: First, the fixed position of the spray heads makes it difficult to achieve uniform spraying from all directions, resulting in some exhaust gas not being effectively absorbed and significantly reducing the purification effect; second, the insufficient residence time of the exhaust gas in the equipment leads to incomplete dissolution of harmful substances, affecting the treatment quality; third, the constant spray pressure makes dynamic adjustment difficult, weakening the mixing effect between the exhaust gas and the absorption liquid. Furthermore, after long-term use, the nozzles are prone to clogging by particulate matter in the exhaust gas, further reducing spraying efficiency.

[0004] These design flaws not only restrict the efficiency of exhaust gas treatment but also increase equipment maintenance costs, and urgently need to be improved through technological innovation. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of traditional exhaust gas absorption devices, which struggle to achieve uniform spraying in all directions, resulting in a significant reduction in purification efficiency; insufficient residence time of exhaust gas within the device leads to incomplete dissolution of harmful substances; constant spray pressure makes dynamic adjustment difficult, weakening the mixing effect between exhaust gas and absorption liquid; and long-term use makes the nozzles prone to clogging by particulate matter in the exhaust gas, further reducing spraying efficiency. Therefore, this invention proposes an exhaust gas absorption device for the sulfuric acid production process from pyrite.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tail gas absorption device for the sulfuric acid production process from pyrite includes a tail gas treatment mechanism, wherein the tail gas treatment mechanism is provided with a tail gas treatment auxiliary mechanism.

[0008] The exhaust gas treatment mechanism includes an exhaust gas absorption assembly, a conveying assembly is provided through the upper middle part of the exhaust gas absorption assembly, and a spiral spray head is provided inside the exhaust gas absorption assembly.

[0009] The tail gas treatment auxiliary mechanism comprises a reciprocating motion assembly, two lower ends of the reciprocating motion assembly are connected with the same sealing plug, the sealing plug is located in the tail gas absorption assembly, a plurality of first through holes are formed in the sealing plug, an upper portion of the sealing plug is provided with a sealing assembly, an upper portion of the sealing assembly is connected with a rotating drum, a plurality of spiral leaves are installed on the rotating drum, the plurality of spiral leaves are matched with a guide assembly to realize rotation of the rotating drum.

[0010] A top wall of the rotating drum is connected with a torsion assembly, a bottom end of the torsion assembly is connected with a middle portion of the sealing plug, a lower portion of the sealing plug is provided with a piston assembly, the piston assembly is connected with a conveying assembly, a bottom end of the piston assembly is connected with a connecting cylinder, a bottom portion of the connecting cylinder is in communication with a middle portion of the spiral spray head, a spiral groove is formed in the connecting cylinder, a ball rod is slidably connected in the spiral groove, and the ball rod is fixedly connected with a bottom end of a movable rod of the piston assembly.

[0011] Preferably, the tail gas absorption assembly comprises a tail gas absorption tank, the sealing plug is arranged in the tail gas absorption tank, a tail gas inlet and a tail gas discharge valve are respectively arranged on two sides of the tail gas absorption tank, a tail gas outlet is arranged on a top portion of the tail gas absorption tank, and a filler layer is arranged in the tail gas absorption tank.

[0012] Preferably, the guide assembly comprises a plurality of fixed rods, the plurality of fixed rods are fixedly connected in the tail gas absorption tank, one end of each of the plurality of fixed rods is fixedly connected with the same annular ring, a plurality of drive rods are fixedly connected in an inner portion of the annular ring, and the drive rods are arranged in a spiral channel formed by gaps between the spiral leaves.

[0013] Preferably, the reciprocating motion assembly comprises a driving motor, two sides of the driving motor are fixedly connected with fixed racks, the two fixed racks are fixedly connected on the tail gas absorption tank, an output shaft of the driving motor is fixedly connected with a transmission crankshaft, the transmission crankshaft is rotatably installed in two second bearings, and the two second bearings are fixedly installed on the tail gas absorption tank.

[0014] Preferably, two movable frames are arranged on the transmission crankshaft, a guide slide rod is fixedly connected below each of the two movable frames, and bottom ends of the two guide slide rods are fixedly connected with the sealing plug.

[0015] A guide sleeve is arranged on the guide slide rod, the guide sleeve is fixedly connected with a fixing member, and the fixing member is fixedly connected in the tail gas absorption tank.

[0016] Preferably, the sealing assembly comprises a sealing plate, an upper portion of the sealing plate is fixedly connected with the rotating drum, the sealing plate is arranged above the sealing plug, a plurality of second through holes corresponding to the number of the first through holes are formed in the sealing plate, and the first through holes and the second through holes are of the same size.

[0017] Preferably, the torsion assembly comprises a fixed disc, a positioning torsion spring is fixedly connected above the fixed disc, one end of the positioning torsion spring is fixedly connected with the top wall of the rotating drum, a supporting shaft is fixedly connected below the fixed disc, the bottom end of the supporting shaft is fixedly connected with the sealing plug, a third bearing is fixedly installed outside the supporting shaft, and the sealing plate is rotatably installed on the third bearing.

[0018] Preferably, the piston assembly comprises a piston cylinder, a filter is arranged above the piston cylinder, a piston piece is arranged in the piston cylinder, a one-way valve is arranged on the piston piece, a connecting rod is fixedly connected above the piston piece, the top end of the connecting rod is fixedly connected with the sealing plug, the lower part of the piston piece is fixedly connected with a movable rod, the movable rod extends into the connecting cylinder from the conveying pipeline, the connecting cylinder is rotatably installed on the fourth bearing, the fourth bearing is fixedly installed on the conveying pipeline, and the conveying pipeline is in communication with the piston cylinder and the connecting cylinder.

[0019] Preferably, the conveying assembly comprises a joint structure, the joint structure penetrates through the tail gas absorption tank and is in communication with a conveying pipe, and the conveying pipe is in communication with the conveying pipeline.

[0020] Preferably, a plurality of spray heads are arranged below the spiral spray head, the spiral spray head is rotatably installed on the first bearing, and the first bearing is fixedly installed in the tail gas absorption tank.

[0021] Compared with the prior art, the tail gas absorption device for the pyrite acid-making process has the following beneficial effects:

[0022] 1. The tail gas absorption device for the pyrite acid-making process, by the reciprocating motion assembly, the sealing plug moves up and down, the sealing plug moves downward, the spiral blade cooperates with the driving rod to drive the rotating drum sealing plate to rotate, the second through hole of the sealing plate is staggered with the first through hole, the sealing plug is sealed, the sealing plug changes the internal pressure of the tail gas absorption tank, thereby the absorption efficiency of the absorption liquid and the tail gas can be accelerated, only the first through hole and the second through hole are corresponded to exhaust, the residence time of the tail gas is prolonged, the tail gas treatment operation is facilitated, the absorption effect of the high-efficiency activated carbon is better, and the tail gas absorption effect is good in the practice of environmental protection engineering and ecological protection engineering construction.

[0023] 2、The tail gas absorption device for pyrite acid making process, through the reciprocating motion assembly drive seal plug up and down movement, make the seal plug drive piston assembly up and down movement, make the movable rod drive ball bar up and down movement, ball bar can drive connecting cylinder rotation through spiral groove, connecting cylinder drive spiral spray head rotation, make spiral spray head rotation can increase the spray area of absorption liquid, and cooperate with the spiral shape of spiral spray head can realize all-round dynamic spraying operation, make the absorption liquid and tail gas uniform contact, and piston piece up and down movement can pressurize absorption liquid spray, improve absorption liquid spray pressure and effect, so as to improve the processing effect of tail gas, and further pressurization can prevent the problem of nozzle blockage.

[0024] 3、The tail gas absorption device for pyrite acid making process, through the reciprocating motion assembly drive seal plug up and down movement, make the seal plug drive piston assembly up and down movement, make the movable rod drive ball bar up and down movement, ball bar can drive connecting cylinder rotation through spiral groove, connecting cylinder drive spiral spray head rotation, make spiral spray head rotation can increase the spray area of absorption liquid, and cooperate with the spiral shape of spiral spray head can realize all-round dynamic spraying operation, make the absorption liquid and tail gas uniform contact, and piston piece up and down movement can pressurize absorption liquid spray, improve absorption liquid spray pressure and effect, so as to improve the processing effect of tail gas, and further pressurization can prevent the problem of nozzle blockage. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A perspective view of a tail gas absorption device for pyrite acid making process is proposed in the present application;

[0026] Figure 2 A perspective view of a tail gas absorption device for pyrite acid making process is proposed in the present application;

[0027] Figure 3 A perspective view of a tail gas absorption device for pyrite acid making process is proposed in the present application;

[0028] Figure 4 A perspective view of a tail gas absorption device for pyrite acid making process is proposed in the present application;

[0029] Figure 5 A perspective view of a tail gas absorption device for pyrite acid making process is proposed in the present application;

[0030] Figure 6 An enlarged view of A in the present application Figure 5

[0031] ​Figure 7 A perspective view of a rotating drum of a tail gas absorption device for a pyrite-based acid production process according to the present application;

[0032] Figure 8 A perspective view of a piston assembly cross-section of a tail gas absorption device for a pyrite-based acid production process according to the present application;

[0033] Figure 9 An enlarged view of B in the present application; Figure 8

[0034] Figure 10 A perspective view of a spiral spray head of a tail gas absorption device for a pyrite-based acid production process according to the present application.

[0035] In the figure: 100, tail gas treatment mechanism; 101, tail gas absorption assembly; 1011, tail gas absorption tank; 1012, filler layer; 1013, tail gas discharge valve; 1014, tail gas inlet; 1015, tail gas outlet; 102, spray head; 103, conveying assembly; 1031, joint structure; 1032, conveying pipe; 104, spiral spray head; 105, first bearing; 200, tail gas treatment auxiliary mechanism; 201, reciprocating motion assembly; 2011, driving motor; 2012, fixed frame; 2013, second bearing; 2014, transmission crankshaft; 2015, movable frame; 2016, guide slide rod; 2017, fixed part; 2018, guide slide sleeve; 202, guide assembly; 2021, fixed rod; 2022, annular ring; 2023, driving rod; 203, sealing assembly; 2031, sealing plate; 2032, second through hole; 204, sealing plug; 205, first through hole; 206, torsion assembly; 2061, fixed disc; 2062, positioning torsional spring; 2063, support shaft; 2064, third bearing; 207, rotating drum; 208, piston assembly; 2081, piston cylinder; 2082, filter; 2083, one-way valve; 2084, piston part; 2085, connecting rod; 2086, movable rod; 2087, conveying pipeline; 209, spiral blade; 210, connecting cylinder; 211, fourth bearing; 212, ball bar; 213, spiral groove. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0037] ​In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] Embodiment 1: Reference Figures 1-7 and Figure 10 A tail gas absorption device for a pyrite-based acid production process, comprising a tail gas treatment mechanism 100, wherein a tail gas treatment auxiliary mechanism 200 is arranged in the tail gas treatment mechanism 100;

[0039] The tail gas treatment mechanism 100 comprises a tail gas absorption assembly 101, and the tail gas absorption assembly 101 comprises a tail gas absorption tank 1011, a sealing plug 204 is arranged in the tail gas absorption tank 1011, a tail gas inlet 1014 and a tail gas discharge valve 1013 are respectively arranged on two sides of the tail gas absorption tank 1011, tail gas can be discharged into the tail gas absorption tank 1011 through the tail gas inlet 1014, residual liquid can be discharged from the tail gas absorption tank 1011 through the tail gas discharge valve 1013, a tail gas outlet 1015 is arranged at the top of the tail gas absorption tank 1011, and treated tail gas can be discharged through the tail gas outlet 1015, and a filler layer 1012 is arranged in the tail gas absorption tank 1011, the filler layer 1012 can preliminarily treat the tail gas, a conveying assembly 103 is arranged through the upper middle part of the tail gas absorption assembly 101, a spiral spray head 104 is arranged in the tail gas absorption assembly 101, a plurality of spray heads 102 are arranged below the spiral spray head 104, the spiral spray head 104 is designed in a spiral shape, so as to realize the effect of dynamic spraying of absorption liquid in cooperation with rotation, the spray heads 102 can disperse and spray the absorption liquid, so that the absorption liquid and the tail gas are uniformly contacted, the spiral spray head 104 is rotatably arranged on a first bearing 105, the spiral spray head 104 is fixed by the first bearing 105, and the spiral spray head 104 can stably rotate, and the first bearing 105 is fixedly arranged in the tail gas absorption tank 1011;

[0040] The tail gas treatment auxiliary mechanism 200 comprises a reciprocating motion assembly 201, the reciprocating motion assembly 201 comprises a driving motor 2011, both sides of the driving motor 2011 are fixedly connected with fixed racks 2012, the driving motor 2011 can be fixed through the fixed racks 2012, the stability of the driving motor 2011 is guaranteed, the two fixed racks 2012 are fixedly connected on the tail gas absorption tank 1011, the output shaft of the driving motor 2011 is fixedly connected with a transmission crankshaft 2014, the transmission crankshaft 2014 is rotatably installed in two second bearings 2013, the second bearings 2013 can assist the transmission crankshaft 2014 to rotate, the transmission crankshaft 2014 rotates smoothly through the second bearings 2013, the two second bearings 2013 are fixedly installed on the tail gas absorption tank 1011, two movable frames 2015 are arranged on the transmission crankshaft 2014, the transmission crankshaft 2014 is provided with two U-shaped sections, the transmission crankshaft 2014 rotates to drive the movable frame 2015 to move up and down smoothly, in addition, the opening on the movable frame 2015 can provide a movement space for the transmission crankshaft 2014, so that the transmission crankshaft 2014 rotates smoothly, a guide slide rod 2016 is fixedly connected below the movable frame 2015, the bottom ends of the two guide slide rods 2016 are fixedly connected with a sealing plug 204, a guide slide sleeve 2018 is arranged on the guide slide rod 2016, the guide slide rod 2016 is guided through the guide slide sleeve 2018, so that the guide slide rod 2016 slides up and down stably along the guide slide sleeve 2018, thereby enabling the sealing plug 204 to move up and down stably, the guide slide sleeve 2018 is fixedly connected with a fixing piece 2017, the fixing piece 2017 is fixedly connected in the tail gas absorption tank 1011, the same sealing plug 204 is connected to the lower ends of the reciprocating motion assembly 201, the sealing plug 204 is sealed with the inner wall of the tail gas absorption tank 1011, so that the sealing plug 204 can smoothly perform the pressurization operation, the sealing plug 204 is located in the tail gas absorption assembly 101, and a plurality of first through holes 205 are formed in the sealing plug 204, a sealing assembly 203 is arranged above the sealing plug 204, the sealing assembly 203 comprises a sealing plate 2031, the upper portion of the sealing plate 2031 is fixedly connected with a rotating cylinder 207, the sealing plate 2031 is arranged above the sealing plug 204, a plurality of second through holes 2032 corresponding in number to the first through holes 205 are formed in the sealing plate 2031, the first through holes 205 and the second through holes 2032 are the same in size, when the second through holes 2032 and the first through holes 205 correspond, the treated tail gas can be discharged upward smoothly, when the first through holes 205 and the second through holes 2032 are misaligned, the sealing plug 204 is kept sealed, the rotating cylinder 207 is connected above the sealing assembly 203, a plurality of spiral leaves 209 are installed on the rotating cylinder 207, the plurality of spiral leaves 209 cooperate with a guide assembly 202 to drive the rotating cylinder 207 to rotate, the guide assembly 202 comprises a plurality of fixed rods 2021, the fixed rods 2021 are extended to fixed points, so that the fixed rods 2021 can fix an annular ring 2022,Further, the position of the driving rod 2023 can be fixed, the plurality of fixed rods 2021 are fixedly connected in the inside of the tail gas absorption tank 1011, and one end of the plurality of fixed rods 2021 is fixedly connected with the same annular ring 2022, the inside of the annular ring 2022 is fixedly connected with the plurality of driving rods 2023, the driving rod 2023 is in the spiral channel formed between the spiral blades 209, so that the movement of the spiral blade 209 can be matched with the driving rod 2023 to realize the rotation of the rotating drum 207, so as to drive the rotation of the sealing plate 2031, and the driving rod 2023 is arranged in the spiral channel formed by the gap between the spiral blades 209.

[0041] The top wall of the rotating drum 207 is connected with a torsion assembly 206, the torsion assembly 206 comprises a fixed disc 2061, the upper side of the fixed disc 2061 is fixedly connected with a positioning torsion spring 2062, the positioning torsion spring 2062 can be twisted and deformed, so that the rotating drum 207 can rotate smoothly, and at the same time, the positioning torsion spring 2062 can release the torsion force synchronously with the rotation of the rotating drum 207 when the sealing plug 204 moves downward, after the release, the positioning torsion spring 2062 can keep the position of the rotating drum 207, so as to avoid the problem of deviation of the sealing plate 2031, one end of the positioning torsion spring 2062 is fixedly connected with the top wall of the rotating drum 207, the lower side of the fixed disc 2061 is fixedly connected with a supporting shaft 2063, the bottom end of the supporting shaft 2063 is fixedly connected with the sealing plug 204, the outer side of the supporting shaft 2063 is fixedly installed with a third bearing 2064, the third bearing 2064 can ensure the smooth rotation of the sealing plate 2031, so that the sealing plate 2031 can smoothly switch the state of the second through hole 2032, the sealing plate 2031 is rotatably installed on the third bearing 2064, the bottom end of the torsion assembly 206 is connected with the middle part of the sealing plug 204, the lower side of the sealing plug 204 is provided with a piston assembly 208, the piston assembly 208 is connected with the conveying assembly 103, and the bottom end of the piston assembly 208 is connected with a connecting barrel 210.

[0042] In this embodiment: by driving motor 2011 drive transmission crankshaft 2014 rotation, transmission crankshaft 2014 drive movable frame 2015 up and down movement, movable frame 2015 drive guide slide rod 2016 up and down movement, make guide slide rod 2016 drive sealing plug 204 up and down movement, make sealing plug 204 downward movement process, make helical blade 209 cooperate with drive rod 2023 can drive rotary drum 207 sealing plate 2031 rotation, make the second through hole 2032 on the sealing plate 2031 and the first through hole 205 staggered, ensure sealing plug 204 sealing, make sealing plug 204 change the pressure inside the tail gas absorption tank 1011, so as to speed up the absorption efficiency of absorption liquid and tail gas, when sealing plug 204 upward movement, make helical blade 209 cooperate with drive rod 2023 again, can drive sealing plate 2031 rotation, make the second through hole 2032 and the first through hole 205 corresponding, make the first through hole 205 and the second through hole 2032 corresponding after exhaust, in this way can be in the first through hole 205 and the second through hole 2032 staggered, improve the residence time of tail gas, facilitate the processing operation of tail gas.

[0043] Embodiment 2: refer to Figure 5 and Figures 8-9 A tail gas absorption device for pyrite acid making process, comprising a piston assembly 208, the piston assembly 208 comprises a piston cylinder 2081, a filter 2082 is arranged above the piston cylinder 2081, gas can be filtered into the piston cylinder 2081 through the filter 2082, a piston piece 2084 is arranged in the piston cylinder 2081, a one-way valve 2083 is arranged on the piston piece 2084, one-way downward air intake can be maintained through the one-way valve 2083, a connecting rod 2085 is fixedly connected above the piston piece 2084, the top end of the connecting rod 2085 is fixedly connected with the sealing plug 204, the lower part of the piston piece 2084 is fixedly connected with a movable rod 2086, the movable rod 2086 extends into a connecting cylinder 210 from a conveying pipeline 2087, the connecting cylinder 210 is rotatably installed on a fourth bearing 211, the fourth bearing 211 can assist the connecting cylinder 210 to rotate stably, so that the connecting cylinder 210 can drive the spiral spray head 104 to rotate, the fourth bearing 211 is fixedly installed on the conveying pipeline 2087, the conveying pipeline 2087 is in communication with the piston cylinder 2081 and the connecting cylinder 210, the bottom of the connecting cylinder 210 is in communication with the middle part of the spiral spray head 104, a spiral groove 213 is arranged in the connecting cylinder 210, a ball rod 212 is slidably connected in the spiral groove 213, the ball rod 212 can drive the connecting cylinder 210 to rotate through the arc surface of the spiral groove 213 through up and down movement, so as to drive the connecting cylinder 210 to rotate, so that the spiral spray head 104 can smoothly realize the effect of dynamic spraying, the bottom end of the ball rod 212 is fixedly connected with the movable rod 2086 of the piston assembly 208.

[0044] The reciprocating motion assembly 201 comprises a driving motor 2011, both sides of the driving motor 2011 are fixedly connected with fixed frames 2012, the two fixed frames 2012 are fixedly connected on the tail gas absorption tank 1011, an output shaft of the driving motor 2011 is fixedly connected with a transmission crankshaft 2014, the transmission crankshaft 2014 is rotatably installed in two second bearings 2013, the two second bearings 2013 are fixedly installed on the tail gas absorption tank 1011, two movable frames 2015 are arranged on the transmission crankshaft 2014, guiding slide rods 2016 are fixedly connected below the movable frames 2015, bottom ends of the two guiding slide rods 2016 are fixedly connected with the sealing plug 204;

[0045] The conveying assembly 103 comprises a joint structure 1031 penetrating through the tail gas absorption tank 1011 and communicating with a conveying pipe 1032, the joint structure 1031 can be externally connected with a conveying device, so that the conveying device can convey the absorption liquid, and then the absorption liquid can enter the conveying pipeline 2087 through the conveying pipe 1032, thereby facilitating the conveying operation of the absorption liquid, and the conveying pipe 1032 communicates with the conveying pipeline 2087.

[0046] In the embodiment: the driving motor 2011 drives the transmission crankshaft 2014 to rotate, so that the transmission crankshaft 2014 drives the movable frame 2015 and the guiding slide rod 2016 to move up and down, the guiding slide rod 2016 drives the sealing plug 204 to move up and down, the sealing plug 204 drives the connecting rod 2085 to move up and down, the connecting rod 2085 drives the piston piece 2084 to move up and down, the piston piece 2084 drives the movable rod 2086 to move up and down, the movable rod 2086 drives the ball bar 212 to move up and down, the ball bar 212 drives the connecting cylinder 210 to rotate through the spiral groove 213, the connecting cylinder 210 drives the spiral spray head 104 to rotate, the spiral spray head 104 can increase the spraying area of the absorption liquid by rotating, and the spiral shape of the spiral spray head 104 can realize the operation of omnidirectional dynamic spraying, so that the absorption liquid and the tail gas are uniformly contacted, and the piston piece 2084 can pressurize the absorption liquid to be sprayed during the up-and-down movement, thereby improving the spraying pressure and effect of the absorption liquid, so that the treatment effect of the tail gas can be improved, and further pressurization can prevent the problem of clogging of the spray head 102.

[0047] Embodiment 3: refer to Figures 2-4 and Figures 6-7 A tail gas absorption device for a pyrite acid production process, comprising a tail gas treatment mechanism 100, the tail gas treatment mechanism 100 comprises a tail gas absorption assembly 101, a conveying assembly 103 is arranged penetrating through the upper middle of the tail gas absorption assembly 101, and a spiral spray head 104 is arranged in the tail gas absorption assembly 101;

[0048] The tail gas treatment auxiliary mechanism 200 comprises a reciprocating motion assembly 201, two lower ends of the reciprocating motion assembly 201 are connected with the same sealing plug 204, the sealing plug 204 is located in the tail gas absorption assembly 101, a plurality of first through holes 205 are formed in the sealing plug 204, an upper portion of the sealing plug 204 is provided with a sealing assembly 203, an upper portion of the sealing assembly 203 is connected with a rotating drum 207, a plurality of spiral leaves 209 are installed outside the rotating drum 207, the plurality of spiral leaves 209 are matched with a guide assembly 202, and the rotating drum 207 is driven to rotate.

[0049] A torsion assembly 206 is connected to a top wall of the rotating drum 207, a bottom end of the torsion assembly 206 is connected with a middle portion of the sealing plug 204, a lower portion of the sealing plug 204 is provided with a piston assembly 208, the piston assembly 208 is connected with the conveying assembly 103, a bottom end of the piston assembly 208 is connected with a connecting drum 210, a bottom portion of the connecting drum 210 is communicated with a middle portion of the spiral spray head 104, a spiral groove 213 is formed in the connecting drum 210, a ball rod 212 is slidably connected in the spiral groove 213, and a bottom end of a movable rod 2086 of the piston assembly 208 is fixedly connected with the ball rod 212.

[0050] In the embodiment, the reciprocating motion assembly 201 can realize the up-down movement of the sealing plug 204, the spiral channel formed between the spiral leaves 209 can realize the rotation of the sealing assembly 203 in cooperation with the guide assembly 202 during the downward movement of the sealing plug 204, the sealing assembly 203 can seal the first through holes 205, at this time, the sealing plug 204 can be downwardly pressurized, the residence of the tail gas is increased, the sealing plug 204 further drives the reciprocating movement of the piston assembly 208, the piston assembly 208 further pressurizes the sprayed absorption liquid, the movable rod 2086 drives the ball rod 212 to cooperate with the spiral groove 213, and the spiral spray head 104 can be rotated to realize dynamic spraying, the residence of the tail gas is increased, the pressurization and dynamic spraying are further matched, the tail gas and the absorption liquid can be fully mixed and reacted, the harmful substances can be effectively and completely dissolved, and the treatment effect of the tail gas is further more remarkable.

[0051] Working principle: when the tail gas is treated, the tail gas is transported into the tail gas absorption tank 1011 through the tail gas inlet 1014, then the driving motor 2011 drives the transmission crankshaft 2014 to rotate, the transmission crankshaft 2014 drives the movable frame 2015 to move up and down, the movable frame 2015 drives the guide slide rod 2016 to move up and down, the guide slide rod 2016 drives the sealing plug 204 to move up and down, when the sealing plug 204 moves downward, the rotating drum 207 moves downward, and the spiral channel formed between the spiral blades 209 can cooperate with the guide rod to drive the rotating drum 207 to rotate, so that the rotating drum 207 drives the sealing plate 2031 to rotate, the sealing plate 2031 drives the second through hole 2032 to be out of phase with the first through hole 205, so that the sealing plug 204 is sealed, at this time, the sealing plug 204 is downwardly pressurized, when the sealing plug 204 moves upward, the sealing plate 2031 can drive the second through hole 2032 to correspond to the first through hole 205, so that the sealing plug 204 reciprocatingly moves up and down to pressurize the absorption liquid;

[0052] By the up-and-down movement of the sealing plug 204, the connecting rod 2085 drives the piston 2084 to move up and down, the downward movement of the piston 2084 can pressurize the absorption liquid, the upward movement of the piston 2084 can open the inlet through the one-way valve 2083, so that the piston 2084 reciprocatingly moves up and down to pressurize the absorption liquid and spray it out, the absorption liquid can be transported through the joint structure 1031 to the external conveying equipment, so that the absorption liquid enters the spiral spray head 104 through the conveying pipeline 2087 and the connecting cylinder 210, and is further pressurized and sprayed out through the nozzle 102, meanwhile, the up-and-down movement of the piston 2084 can also drive the movable rod 2086 and the ball rod 212 to move up and down, the ball rod 212 drives the connecting cylinder 210 and the spiral spray head 104 to rotate through the spiral groove 213 to spray, so that the tail gas is treated upwardly through the filler layer 1012, and then the pressurization and dynamic spraying of the sealing plug 204 make the tail gas mix with the absorption liquid to fully react, when the first through hole 205 and the second through hole 2032 correspond, the treated micro gas is discharged through the tail gas outlet 1015.

[0053] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A tail gas absorption apparatus for use in a pyrite-based sulphuric acid process, comprising a tail gas treatment mechanism, characterised in that, The tail gas treatment mechanism is provided with a tail gas treatment auxiliary mechanism; the tail gas treatment mechanism comprises a tail gas absorption assembly, a conveying assembly is arranged in the upper middle part of the tail gas absorption assembly, and a spiral spray head is arranged in the tail gas absorption assembly; the tail gas treatment auxiliary mechanism comprises a reciprocating motion assembly, the lower ends of the reciprocating motion assembly are connected with the same sealing plug, the sealing plug is located in the tail gas absorption assembly, a plurality of first through holes are formed in the sealing plug, a sealing assembly is arranged above the sealing plug, a rotating drum is connected above the sealing assembly, a plurality of spiral leaves are arranged on the rotating drum, the spiral leaves are matched with a guide assembly to drive the rotating drum to rotate, a torsion assembly is connected to the top wall of the rotating drum, the bottom end of the torsion assembly is connected with the middle part of the sealing plug, a piston assembly is arranged below the sealing plug, the piston assembly is connected with the conveying assembly, the bottom end of the piston assembly is connected with a connecting cylinder, the bottom of the connecting cylinder is in communication with the middle part of the spiral spray head, a spiral groove is formed in the connecting cylinder, a ball rod is slidably connected in the spiral groove, and the bottom end of the ball rod is fixedly connected with the movable rod of the piston assembly. The tail gas absorption assembly comprises a tail gas absorption tank, the sealing plug is arranged in the tail gas absorption tank, a tail gas inlet and a tail gas discharge valve are arranged on the two sides of the tail gas absorption tank, a tail gas outlet is arranged on the top of the tail gas absorption tank, and a filler layer is arranged in the tail gas absorption tank. The guide assembly comprises a plurality of fixed rods, the fixed rods are fixedly connected in the tail gas absorption tank, one end of each fixed rod is fixedly connected with the same annular ring, a plurality of drive rods are fixedly connected in the annular ring, and the drive rods are arranged in the spiral channel formed by the gaps between the spiral leaves. The reciprocating motion assembly comprises a driving motor, fixed racks are fixedly connected to the two sides of the driving motor, the fixed racks are fixedly connected to the tail gas absorption tank, a transmission crankshaft is fixedly connected to the output shaft of the driving motor, and the transmission crankshaft is rotatably arranged in two second bearings which are fixedly arranged on the tail gas absorption tank. Two movable frames are arranged on the transmission crankshaft, guide sliding rods are fixedly connected to the lower parts of the movable frames, and the bottom ends of the guide sliding rods are fixedly connected with the sealing plug; guide sleeves are arranged on the guide sliding rods, the guide sleeves are fixedly connected to fixing members, and the fixing members are fixedly connected to the inside of the tail gas absorption tank.

2. A tail gas absorption unit for use in a pyrite-based sulphuric acid process according to claim 1, characterised in that, The sealing assembly comprises a sealing plate, the sealing plate is fixedly connected to the upper part of the rotating drum, the sealing plate is arranged above the sealing plug, a plurality of second through holes are formed in the sealing plate and correspond to the first through holes, and the first through holes and the second through holes are of the same size.

3. A tail gas absorption unit for use in a pyrite-based sulphuric acid process according to claim 1, characterised in that, The torsion assembly comprises a fixed disc, a positioning torsion spring is fixedly connected to the upper part of the fixed disc, one end of the positioning torsion spring is fixedly connected to the top wall of the rotating drum, a supporting shaft is fixedly connected to the lower part of the fixed disc, the bottom end of the supporting shaft is fixedly connected with the sealing plug, a third bearing is fixedly arranged on the supporting shaft, and the sealing plate is rotatably arranged on the third bearing.

4. A tail gas absorption unit for use in a pyrite-based sulphuric acid process according to claim 1, characterized in that, The piston assembly comprises a piston cylinder, a filter is arranged above the piston cylinder, a piston piece is arranged in the piston cylinder, a one-way valve is arranged on the piston piece, a connecting rod is fixedly connected above the piston piece, the top end of the connecting rod is fixedly connected with a sealing plug, the lower part of the piston piece is fixedly connected with a movable rod, the movable rod penetrates out of the conveying pipeline and extends into a connecting cylinder, the connecting cylinder is rotatably installed on a fourth bearing, the fourth bearing is fixedly installed on the conveying pipeline, and the conveying pipeline is in communication with the piston cylinder and the connecting cylinder.

5. A tail gas absorption unit for use in a pyrite-based sulphuric acid process according to claim 4, characterised in that, The conveying assembly comprises a joint structure, the joint structure penetrates through the tail gas absorption tank and is in communication with a conveying pipe, and the conveying pipe is in communication with the conveying pipeline.

6. A tail gas absorption unit for use in a pyrite-based sulphuric acid process according to claim 1, characterized in that, A plurality of spray heads are arranged below the spiral spray head, and the spiral spray head is rotatably installed on a first bearing, and the first bearing is fixedly installed in the tail gas absorption tank.

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