Mdea desulfurization tail gas complex iron desulfurization device

Abstract

The application relates to the technical field of desulfurization devices, in particular to an MDEA desulfurization tail gas complex iron desulfurization device, which comprises a desulfurization tower base, the upper portion of the desulfurization tower base is provided with a gas guide layer, the output shaft of the motor drives the rotating shaft to rotate, when the rotating shaft rotates, the gear shaft inserted into the rotating shaft rotates together with the rotating shaft, the gear shaft drives the connecting shaft to rotate, when the connecting shaft rotates, the inclined surface of the upper protruding block abuts against the inclined surface of the lower protruding block on the inner side of the stabilizing column, the connecting shaft is lifted upward by a distance, the spring drives the gear shaft and the connecting shaft to reset through pulling the telescopic column, the whole connecting shaft can reciprocate up and down while rotating, the connecting shaft drives the fan blade to rotate through the rotating sleeve, the gas is uniformly lifted through cooperation of the gas guide plate, the wind power during rotation of the fan blade can accelerate the gas flow rate in the desulfurization layer to a certain extent, so that the gas desulfurization efficiency in the desulfurization layer is relatively improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of desulfurization devices, in particular to an MDEA desulfurization tail gas complex iron desulfurization device. BACKGROUND

[0002] The MDEA desulfurization tail gas complex iron desulfurization device is a combined gas purification equipment combining a methyldiethanolamine desulfurization technology and a complex iron desulfurization technology. The device is mainly used for treating industrial tail gas containing acidic gases such as hydrogen sulfide, and realizes efficient purification through a two-stage desulfurization process. In the front process, MDEA solution is used as a chemical absorbent to selectively remove most of the hydrogen sulfide, and the characteristics of high selectivity and low regeneration energy consumption are used to realize preliminary purification. In the rear process, the complex iron desulfurization process is adopted, residual hydrogen sulfide is converted into elemental sulfur through the oxidation-reduction reaction of iron ions, and deep desulfurization and sulfur resource recovery are realized. The core function of the whole device is to improve the desulfurization efficiency and reduce the operation cost, which can not only meet the strict environmental protection emission standard, but also recover valuable sulfur products. The technical advantages are reflected in the stability when treating high-concentration hydrogen sulfide, low solvent consumption and strong adaptability, and the device is widely used in tail gas treatment links in the fields of natural gas purification, refinery gas treatment and coal chemical industry. In the device running process, the process parameters are optimized through automatic control to ensure that the desulfurization efficiency is maintained at a high level, and a sulfur separation system is provided to realize continuous recovery of by-products. The combined process effectively solves the efficiency bottleneck problem existing in single desulfurization technology, and provides an economic and reliable solution for industrial waste gas treatment.

[0003] In the complex iron desulfurization process, the gas pipe near the desulfurization tower is connected to the gas with desulfurization, and the gas pipe is only near one side of the desulfurization tower, so that the gas will be tilted when rising, and the gas will not be evenly dispersed, so that the contact area of the complex iron solution and the gas will be limited, thereby the desulfurization process efficiency is not improved, and even is reduced. However, the spraying of the complex iron solution in the desulfurization tower is always carried out, but a part of the solution cannot completely react with the gas near the inner wall of the desulfurization tower, which causes waste of the complex iron solution, and cannot completely contact and react with the desulfurization gas. In addition, the desulfurization gas contains dust and other substances, which are attached to the inner wall of the desulfurization tower together with the complex iron solution, and long-term cleaning will affect the desulfurization reaction and reduce the desulfurization efficiency. In view of this, the MDEA desulfurization tail gas complex iron desulfurization device is provided. SUMMARY

[0004] The MDEA desulfurization tail gas complex iron desulfurization device solves the problem that the complex iron solution in the desulfurization tower and the desulfurization gas are not fully contacted, thereby affecting the desulfurization efficiency.

[0005] To achieve the above object, the present application provides the following technical solutions:

[0006] The MDEA desulfurization tail gas complex iron desulfurization device, including the desulfurization tower base, the upper of desulfurization tower base is provided with the gas guide layer, the side of gas guide layer is provided with the gas inlet, the upper of gas guide layer is provided with the desulfurization layer, the upper of desulfurization layer is provided with the exhaust layer, still including control assembly, for improving the desulfurization efficiency when complex iron desulfurization in desulfurization layer, avoid the wall of desulfurization layer and attach too much complex iron solution and impurities, linkage assembly, for improving desulfurization efficiency with control assembly, and can be automatically opened and closed and quantitative spraying complex iron solvent and carry out desulfurization, control assembly includes support, the inside of support is filled with bulk filler, the top surface of support is fixedly connected with liquid guide plate, the inside of support is provided with motor, the top surface of support is fixedly connected with stabilizing column, the inside of stabilizing column is rotatably connected with rotating shaft, the output shaft of motor is fixedly connected with rotating shaft, the inside of rotating shaft is provided with gear shaft, the top surface of gear shaft is fixedly connected with connecting shaft, the bottom surface of connecting shaft is fixedly connected with upper lug, the inside of stabilizing column is fixedly connected with lower lug, the top end of connecting shaft is fixedly connected with rotating sleeve, the surface of rotating sleeve is fixedly connected with fan blade, the end away from rotating sleeve of fan blade is fixedly connected with scraping ring.

[0007] Preferably, the inside of gear shaft is fixedly connected with telescopic column, the bottom surface of telescopic column is fixedly connected with telescopic rod, the top end of telescopic rod is inserted into the inside of telescopic column and is slidably connected with telescopic column, the bottom surface of telescopic rod is fixedly connected with circular plate, the circular plate is rotatably connected with the inner wall of rotating shaft.

[0008] Preferably, the outside of telescopic rod is sleeved with spring one, one end of spring one is fixedly connected with the top surface of circular plate, the other end of spring one is fixedly connected with the bottom surface of telescopic column.

[0009] Preferably, the top surface of connecting shaft penetrates and is slidably connected with connecting column, the top surface of connecting column is fixedly connected with distribution tray, the inside of distribution tray is slidably connected with supporting rod, the bottom end of supporting rod is fixedly connected with push plate, the outside of supporting rod is sleeved with spring two, one end of spring two is fixedly connected with the top surface of push plate, the other end of spring two is fixedly connected with the bottom surface of distribution tray, the surface of push plate is fixedly connected with L-shaped connecting rod.

[0010] Preferably, the linkage assembly includes fixed tube, the bottom end of fixed tube is inserted into distribution tray and is fixedly connected with distribution tray, the end away from push plate of L-shaped connecting rod is fixedly connected with sliding column, the inside of sliding column is fixedly connected with connecting sleeve, the inside of connecting sleeve is provided with arc-shaped guide groove.

[0011] Preferably, the top surface of the fixed pipe is fixedly connected with a linkage disc, the top end of the linkage disc is fixedly connected with a connecting head, the outer side of the linkage disc is attached to the inner side of the connecting sleeve, and a limiting groove is formed in the side surface of the linkage disc.

[0012] Preferably, the inner side of the linkage disc is rotatably connected with a rotating disc, the side surface of the rotating disc is fixedly connected with a guide rod, the guide rod passes through the limiting groove and is inserted into an arc-shaped guide groove formed in the inner side of the connecting sleeve, a pushing groove is formed in the bottom surface of the rotating disc, and the inner side of the linkage disc is fixedly connected with a limiting frame.

[0013] Preferably, a short sliding groove is formed in the surface of the limiting frame, a sliding rod one is slidably connected to the inner side of the short sliding groove, a sealing block is fixedly connected to the top end of the sliding rod one, a sliding rod two is fixedly connected to the top end of the sealing block, and the top end of the sliding rod two is inserted into the inner side of the pushing groove.

[0014] Preferably, the inner side of the distributing disc is inserted and fixedly connected with a shunt pipe, the end of the shunt pipe away from the distributing disc is fixedly connected with a snap ring, the snap ring is fixedly connected with the inner wall of the desulfurization layer, and the bottom of the shunt pipe is provided with a spray head.

[0015] Preferably, the outer side of the desulfurization tower base is provided with a water tank, the top of the water tank is provided with a circulating pump one, the top end of the circulating pump one is fixedly connected with a water suction pipe, the end of the water suction pipe away from the circulating pump one is fixedly connected with the connecting head, the side surface of the desulfurization tower base is provided with a rich liquid pipe, the right side of the rich liquid pipe is connected with a circulating pump two, the end of the circulating pump two away from the rich liquid pipe is connected with a regeneration tower, the right side of the regeneration tower is connected with a circulating pump three, the end of the circulating pump three away from the regeneration tower is connected with a filter box, the side surface of the regeneration tower is provided with an air pipe, and the inner side of the air guide layer is provided with an air guide plate.

[0016] By means of the above technical scheme, the application provides an MDEA desulfurization tail gas complex iron desulfurization device.

[0017] 1、The output shaft of the motor drives the rotating shaft to rotate, the gear shaft inserted into the rotating shaft rotates with the rotating shaft, the gear shaft drives the connecting shaft to rotate, the inclined surface of the upper protruding block abuts against the inclined surface of the lower protruding block in the stable column, the connecting shaft is lifted upward by a distance, the spring one drives the gear shaft and the connecting shaft to reset by pulling the telescopic column, the connecting shaft can rotate and reciprocate upward and downward at the same time, the connecting shaft drives the fan blades to rotate through the rotating sleeve, the air is uniformly raised by cooperating with the air guide plate, the wind power during the rotation of the fan blades can accelerate the gas flow rate in the desulfurization layer to a certain extent, and the gas desulfurization efficiency in the desulfurization layer is relatively improved.

[0018] 2、The present application through the fan blade rotation will also drive the scraper ring rotation, so that the scraper ring can move up and down while rotating, so that the scraper ring can reciprocating and rotating on the inner wall of the desulfurization layer, avoid complex iron solution and gas residues attached in the desulfurization layer affect the desulfurization process.

[0019] 3、The present application through the short slot of the stroke is shorter, so that the slide rod one slide a certain distance will be the end of the short slot resistance, then the slot continues to drive the slide rod two will force the sealing block with the shaft of the slide rod one rotation, so that the six groups of circumferential array set sealing block rotation expansion, then through the connector can be extracted in the water pipe of complex iron solution through the shunt pipe and spray head spray, and with the sliding column drive the connecting sleeve reciprocating motion, according to the above sealing block expansion principle, so that the sealing block can be expanded, closed, expanded, closed reciprocating opening and closing work, so as to realize the quantitative supply of complex iron solution, save complex iron solution for desulfurization work, cooperate with the airflow in the desulfurization layer, also can ensure that the complex iron solution can be quickly dispersed to improve the desulfurization efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings described herein are used to provide further understanding of the present application, and constitute a part of this application:

[0021] Figure 1 The overall structure of the present application is shown in the figure;

[0022] Figure 2 The internal structure of the desulfurization layer in the present application is shown in the figure;

[0023] Figure 3 The internal structure of the gas guide layer in the present application is shown in the figure;

[0024] Figure 4 The internal structure of the desulfurization layer in the present application is shown in the figure;

[0025] Figure 5 The internal structure of the desulfurization layer in the present application is shown in the figure;

[0026] Figure 6 The structure of the support is shown in the figure;

[0027] Figure 7 The structure of the stabilizing column is shown in the figure;

[0028] Figure 8 The structure of the shaft is shown in the figure;

[0029] Figure 9 The structure of the shunt disc is shown in the figure;

[0030] Figure 10It is a fixed tube profile development structure schematic diagram in the application;

[0031] Figure 11 It is an expansion structure schematic diagram of the internal structure of the linkage disc in the application.

[0032] In the figure: 1, desulfurization tower base; 2, control assembly; 3, linkage assembly; 4, gas guide layer; 5, air inlet; 6, desulfurization layer; 7, exhaust layer; 8, water tank; 9, circulating pump one; 10, water pumping pipe; 11, rich liquid pipe; 12, circulating pump two; 13, regeneration tower; 14, air pipe; 15, circulating pump three; 16, filter box; 17, gas guide plate; 21, support; 22, bulk filler; 23, liquid guide plate; 24, motor; 25, stabilizing column; 26, rotating shaft; 27, gear shaft; 28, connecting shaft; 29, upper protruding block; 210, lower protruding block; 211, telescopic column; 212, telescopic rod; 213, round plate; 214, spring one; 215, connecting column; 216, liquid distribution disc; 217, push plate; 218, supporting rod; 219, spring two; 220, L-shaped connecting rod; 221, rotating sleeve; 222, fan blade; 223, scraping ring; 31, fixed tube; 32, sliding column; 33, connecting sleeve; 34, arc-shaped guide groove; 35, connecting head; 36, linkage disc; 37, limiting groove; 38, rotating disc; 39, guide rod; 310, limiting frame; 311, short sliding groove; 312, sliding rod one; 313, sealing block; 314, sliding rod two; 315, shunt pipe; 316, spray head; 317, snap ring; 318, actuating groove. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0034] An MDEA desulfurization tail gas complex iron desulfurization device, like Figure 1 - Figure 11The device is shown, including desulfurization tower base 1, the upper part of desulfurization tower base 1 is provided with gas guide layer 4, the side of gas guide layer 4 is provided with air inlet 5, the upper part of gas guide layer 4 is provided with desulfurization layer 6, the upper part of desulfurization layer 6 is provided with exhaust layer 7;Also includes control assembly 2 for improving the desulfurization efficiency of complex iron desulfurization in desulfurization layer 6, avoiding too much complex iron solution and impurities adhering to the inner wall of desulfurization layer 6;Linkage assembly 3 for cooperating with control assembly 2 to improve desulfurization efficiency, and can be automatically opened and closed and quantitative spraying of complex iron solvent for desulfurization;Control assembly 2 includes support 21, the inner side of support 21 is filled with bulk filler 22, the top surface of support 21 is fixedly connected with liquid guide plate 23, the inner side of support 21 is provided with motor 24, the top surface of support 21 is fixedly connected with stabilizing column 25, the inner side of stabilizing column 25 is rotatably connected with rotating shaft 26, the output shaft of motor 24 is fixedly connected with rotating shaft 26, the inner side of rotating shaft 26 is provided with gear shaft 27, the top surface of gear shaft 27 is fixedly connected with connecting shaft 28, starting motor 24, the output shaft of motor 24 will drive rotating shaft 26 to rotate, when rotating shaft 26 rotates, gear shaft 27 inserted into the inside of rotating shaft 26 will rotate with rotating shaft 26, so that gear shaft 27 will drive connecting shaft 28 to rotate, when connecting shaft 28 rotates, the inclined surface of upper protruding block 29 will abut against the inclined surface of lower protruding block 210 in the inner side of stabilizing column 25, so that connecting shaft 28 will be lifted up a distance, at the same time, connecting shaft 28 itself can still rotate, the bottom surface of connecting shaft 28 is fixedly connected with upper protruding block 29, the inner side of stabilizing column 25 is fixedly connected with lower protruding block 210, the top end of connecting shaft 28 is fixedly connected with rotating sleeve 221, the surface of rotating sleeve 221 is fixedly connected with fan blade 222, the end away from rotating sleeve 221 of fan blade 222 is fixedly connected with scraping ring 223, after upper protruding block 29 rotates a distance with connecting shaft 28, the inclined surface of upper protruding block 29 and lower protruding block 210 no longer abuts, then spring one 214 will drive gear shaft 27 and connecting shaft 28 to reset together by pulling telescopic column 211, so that the whole connecting shaft 28 can reciprocate up and down while rotating itself, then connecting shaft 28 will drive fan blade 222 to rotate through rotating sleeve 221, the wind power of fan blade 222 when rotating can accelerate the gas flow rate in desulfurization layer 6 to a certain extent, thereby relatively improving the gas desulfurization efficiency in desulfurization layer 6. The inner side of gear shaft 27 is fixedly connected with telescopic column 211, the bottom surface of telescopic column 211 is fixedly connected with telescopic rod 212, the top end of telescopic rod 212 is inserted into the inner side of telescopic column 211 and is slidingly connected with telescopic column 211, the bottom surface of telescopic rod 212 is fixedly connected with circular plate 213, circular plate 213 is rotatably connected with the inner wall of rotating shaft 26.The outer side of the telescopic rod 212 is sleeved with the spring 214, the gear shaft 27 will rise along with the connecting shaft 28, the bottom of the telescopic column 211 inside the gear shaft 27 is slidably connected with the telescopic rod 212, and the bottom circular plate 213 of the telescopic rod 212 is rotatably connected with the rotating shaft 26, so that the gear shaft 27 is avoided from being stuck with the spring 214 due to movement interference when moving up and down and rotating, one end of the spring 214 is fixedly connected with the top surface of the circular plate 213, and the other end of the spring 214 is fixedly connected with the bottom surface of the telescopic column 211. The top surface of the connecting shaft 28 penetrates and is slidably connected with the connecting column 215, the top surface of the connecting column 215 is fixedly connected with the distribution disc 216, the inner side of the distribution disc 216 is slidably connected with the supporting rod 218, the bottom end of the supporting rod 218 is fixedly connected with the push plate 217, the outer side of the supporting rod 218 is sleeved with the spring 219, one end of the spring 219 is fixedly connected with the top surface of the push plate 217, the other end of the spring 219 is fixedly connected with the bottom surface of the distribution disc 216, and the surface of the push plate 217 is fixedly connected with the L-shaped connecting rod 220.

[0035] The linkage assembly 3 comprises a fixed tube 31, the bottom end of the fixed tube 31 is inserted into the distribution disc 216 and is fixedly connected with the distribution disc 216, one end of the L-shaped connecting rod 220 away from the push plate 217 is fixedly connected with a sliding column 32, with the driving of the connecting shaft 28 in the gear shaft 27 and the rotating shaft 26, the connecting shaft 28 rotates and can move up and down reciprocatingly, at the same time, when the connecting shaft 28 rises, the uppermost rotating sleeve 221 lifts the push plate 217, so that the push plate 217 compresses the spring two 219, in order to reset the push plate 217, when the push plate 217 rises, the sliding column 32 fixedly connected with the L-shaped connecting rod 220 is lifted, when the spring two 219 pushes the push plate 217 to reset, the sliding column 32 is also driven to move downward, so that the sliding column 32 can also move up and down reciprocatingly, the inner side of the sliding column 32 is fixedly connected with a connecting sleeve 33, the inner side of the connecting sleeve 33 is provided with an arc-shaped guide groove 34. The top surface of the fixed tube 31 is fixedly connected with a linkage disc 36, the top end of the linkage disc 36 is fixedly connected with a connecting head 35, the outer side of the linkage disc 36 is attached to the inner side of the connecting sleeve 33, and the side surface of the linkage disc 36 is provided with a limiting groove 37. The inner side of the linkage disc 36 is rotatably connected with a rotating disc 38, the side surface of the rotating disc 38 is fixedly connected with a guide rod 39, the guide rod 39 penetrates through the limiting groove 37 and is inserted into the arc-shaped guide groove 34 provided in the inner side of the connecting sleeve 33, the bottom surface of the rotating disc 38 is provided with a pushing groove 318, in the process of rising of the sliding column 32, the arc-shaped guide groove 34 provided in the inner side of the connecting sleeve 33 fixedly connected with the inner side of the sliding column 32 will abut against the guide rod 39 inserted into the inner side of the arc-shaped guide groove 34, but the guide rod 39 penetrates through the limiting groove 37, so that the limiting groove 37 relatively limits the guide rod 39, and then the guide rod 39 is limited by the limiting groove 37 and is pushed by the arc-shaped guide groove 34 to generate a horizontal pushing force to push the rotating disc 38 to rotate, and the inner side of the linkage disc 36 is fixedly connected with a limiting frame 310. The surface of the limiting frame 310 is provided with a short sliding groove 311, the inner side of the short sliding groove 311 is slidably connected with a sliding rod one 312, the top end of the sliding rod one 312 is fixedly connected with a sealing block 313, the top end of the sealing block 313 is fixedly connected with a sliding rod two 314, the top end of the sliding rod two 314 is inserted into the inner side of the pushing groove 318, when the rotating disc 38 rotates, the pushing groove 318 provided in the bottom surface of the rotating disc 38 will push the sliding rod two 314, so that the sliding rod two 314 drives the sealing block 313 to displace, but after the displacement of the sealing block 313, the sliding rod one 312 at the bottom of the sealing block 313 will slide along the short sliding groove 311, but because the stroke of the short sliding groove 311 is short, the sliding rod one 312 will be abutted by the end of the short sliding groove 311 after sliding a certain distance, so that the continuous pushing of the pushing groove 318 to the sliding rod two 314 will force the sealing block 313 to rotate around the axis of the sliding rod one 312, so that the six groups of circumferentially arranged sealing blocks 313 rotate and expand.The inner side of the distribution disc 216 is inserted and fixedly connected with a shunt pipe 315, the end of the shunt pipe 315 away from the distribution disc 216 is fixedly connected with a snap ring 317, the snap ring 317 is fixedly connected with the inner wall of the desulfurization layer 6, and the bottom of the shunt pipe 315 is provided with a spray head 316. The outer side of the desulfurization tower base 1 is provided with a water tank 8, the top of the water tank 8 is provided with a circulating pump one 9, the top end of the circulating pump one 9 is fixedly connected with a water suction pipe 10, the end of the water suction pipe 10 away from the circulating pump one 9 penetrates through the exhaust layer 7 and is fixedly connected with the connecting head 35, the complex iron solution is added into the water tank 8 first, then the gas needing to be desulfurized is connected into the gas guide layer 4 through the gas inlet 5, is uniformly distributed through the gas guide plate 17 and then rises to the desulfurization layer 6, then the gas to be desulfurized rises to the upper area of the desulfurization layer 6 through the bulk packing 22, then the circulating pump one 9 can be started to suck the complex iron solution in the water tank 8, so that the complex iron solution enters the linkage disc 36 through the water suction pipe 10 and the connecting head 35, the side of the desulfurization tower base 1 is provided with a rich liquid pipe 11, the right side of the rich liquid pipe 11 is connected with a circulating pump two 12, the end of the circulating pump two 12 away from the rich liquid pipe 11 is connected with a regeneration tower 13, the right side of the regeneration tower 13 is connected with a circulating pump three 15, the end of the circulating pump three 15 away from the regeneration tower 13 is connected with a filter box 16, the side of the regeneration tower 13 is provided with a gas pipe 14, and the inner side of the gas guide layer 4 is provided with a gas guide plate 17.

[0036] The MDEA desulfurization tail gas complex iron desulfurization device of the present application is used, first, the water tank 8 is added with complex iron solution, then the gas to be desulfurized is connected to the gas guide layer 4 through the gas inlet 5, and is uniformly distributed through the gas guide plate 17 and then rises to the desulfurization layer 6, then the gas to be desulfurized rises to the upper area of the desulfurization layer 6 through the bulk packing 22, then the circulating pump one 9 is started to pump the complex iron solution in the water tank 8, so that the complex iron solution enters the linkage disc 36 through the water pumping pipe 10 and the connecting head 35, but at this time the sealing block 313 in the linkage disc 36 is close to the axis of the linkage disc 36, that is, the linkage disc 36 is in a closed state, at this time the motor 24 is started, the output shaft of the motor 24 drives the rotating shaft 26 to rotate, when the rotating shaft 26 rotates, the gear shaft 27 inserted into the rotating shaft 26 rotates with the rotating shaft 26, so that the gear shaft 27 drives the connecting shaft 28 to rotate, when the connecting shaft 28 rotates, the inclined surface of the upper protruding block 29 will abut against the inclined surface of the lower protruding block 210 in the inner side of the stabilizing column 25, so that the connecting shaft 28 is lifted up a distance, while the connecting shaft 28 can still rotate, the gear shaft 27 rises with the connecting shaft 28, the telescopic column 211 in the gear shaft 27 is slidably connected with the telescopic rod 212 at the bottom, and the circular plate 213 at the bottom of the telescopic rod 212 is rotationally connected with the rotating shaft 26, so as to avoid the gear shaft 27 from being stuck with the spring one 214 when moving up and down and rotating, after the upper protruding block 29 rotates with the connecting shaft 28 for a certain distance, the inclined surface of the upper protruding block 29 and the lower protruding block 210 no longer abut against each other, then the spring one 214 drives the gear shaft 27 and the connecting shaft 28 to reset through the telescopic column 211, so that the connecting shaft 28 can move up and down while rotating, then the connecting shaft 28 drives the fan blade 222 to rotate through the rotating sleeve 221, the wind power when the fan blade 222 rotates can accelerate the gas flow rate in the desulfurization layer 6 to a certain extent, so as to relatively improve the gas desulfurization efficiency in the desulfurization layer 6, and the scraping ring 223 is also rotated when the fan blade 222 rotates, so that the scraping ring 223 can move up and down while rotating, so that the scraping ring 223 can scrape the inner wall of the desulfurization layer 6 up and down and rotationally, avoiding the complex iron solution and gas residues from adhering to the desulfurization layer 6 to affect the desulfurization process.

[0037] When the connecting shaft 28 rotates and reciprocates upward and downward under the driving of the tooth shaft 27 and the rotating shaft 26, the connecting shaft 28 is lifted by the uppermost rotating sleeve 221, which pushes the push plate 217 to compress the spring 219, so that the push plate 217 is reset, and the push plate 217 is lifted by the L-shaped connecting rod 220 to lift the sliding column 32 fixedly connected with the L-shaped connecting rod 220, and the sliding column 32 is lowered when the spring 219 pushes the push plate 217 to reset, so that the sliding column 32 can also reciprocate upward and downward. In the lifting process of the sliding column 32, the arc-shaped guide groove 34 formed in the inner side of the connecting sleeve 33 fixedly connected to the inner side of the sliding column 32 will abut against the guide rod 39 inserted into the arc-shaped guide groove 34, but the guide rod 39 passes through the limiting groove 37, so that the limiting groove 37 limits the guide rod 39, and the guide rod 39 is limited by the limiting groove 37 and is pushed by the arc-shaped guide groove 34 to generate a horizontal pushing force to push the rotating disc 38 to rotate. When the rotating disc 38 rotates, the pushing groove 318 formed in the bottom surface of the rotating disc 38 pushes the sliding rod 314, so that the sliding rod 314 drives the sealing block 313 to displace. However, after the displacement of the sealing block 313, the sliding rod 311 at the bottom of the sealing block 313 slides along the short sliding groove 311. However, since the stroke of the short sliding groove 311 is short, the sliding rod 311 is abutted by the end of the short sliding groove 311 after sliding a certain distance. At this time, the continuous pushing of the pushing groove 318 on the sliding rod 314 forces the sealing block 313 to rotate around the axis of the sliding rod 311, so that the six groups of circumferentially arranged sealing blocks 313 rotate and expand. Therefore, the complex iron solution in the water pump 10 can be sprayed through the shunt pipe 315 and the spray head 316 through the connecting head 35. According to the expansion principle of the sealing block 313, the sealing block 313 can be expanded, closed, expanded, and closed reciprocally, so as to realize quantitative supply of the complex iron solution and save the complex iron solution for desulfurization. When the complex iron solution is used for desulfurization, the acceleration of the airflow in the desulfurization layer 6 can also ensure that the complex iron solution can be quickly dispersed to improve the desulfurization efficiency.

[0038] Finally, the circulating pump 12 is started to pump the rich solution deposited in the desulfurization tower base 1 into the regeneration tower 13, and the air in the air pipe 14 is oxidized and regenerated to generate elemental sulfur. The lean solution after desulfurization can also be pumped into the filter box 16 by the circulating pump 15 for filtration and reuse. This is the last step of the desulfurization process, and the whole desulfurization work is completed.

[0039] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it should be taken in a descriptive sense and not a limiting sense.

[0040] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, it is to be understood that various modifications, changes, substitutions and alterations can be made to the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. A desulfurization device for MDEA desulfurization tail gas complexed iron, comprising a desulfurization tower base (1), characterized in that: An air guide layer (4) is provided above the base (1) of the desulfurization tower, an air inlet (5) is provided on the side of the air guide layer (4), a desulfurization layer (6) is provided above the air guide layer (4), and an exhaust layer (7) is provided above the desulfurization layer (6). It also includes a control component (2) to improve the desulfurization efficiency of complexed iron desulfurization in the desulfurization layer (6) and avoid excessive complexed iron solution and impurities adhering to the inner wall of the desulfurization layer (6); The linkage component (3) is used in conjunction with the control component (2) to improve the desulfurization efficiency and can automatically open and close and quantitatively spray complex iron solvent for desulfurization; The control component (2) includes a bracket (21), the inner side of which is filled with bulk filler (22). A liquid guide plate (23) is fixedly connected to the top surface of the bracket (21). A motor (24) is disposed on the inner side of the bracket (21). A stabilizing column (25) is fixedly connected to the top surface of the bracket (21). A rotating shaft (26) is rotatably connected to the inner side of the stabilizing column (25). The rotating shaft (26) is fixedly connected to the output shaft of the motor (24). The inner side of the rotating shaft (26) is provided with... A gear shaft (27) is provided, a connecting shaft (28) is fixedly connected to the top surface of the gear shaft (27), an upper protrusion (29) is fixedly connected to the bottom surface of the connecting shaft (28), a lower protrusion (210) is fixedly connected to the inner side of the stabilizing column (25), a rotating sleeve (221) is fixedly connected to the top end of the connecting shaft (28), a fan blade (222) is fixedly connected to the surface of the rotating sleeve (221), and a scraper ring (223) is fixedly connected to the end of the fan blade (222) away from the rotating sleeve (221). A telescopic column (211) is fixedly connected to the inner side of the gear shaft (27), and a telescopic rod (212) is fixedly connected to the bottom surface of the telescopic column (211). The top end of the telescopic rod (212) is inserted into the inner side of the telescopic column (211) and is slidably connected to the telescopic column (211). A circular plate (213) is fixedly connected to the bottom surface of the telescopic rod (212), and the circular plate (213) is rotatably connected to the inner wall of the rotating shaft (26).

2. The MDEA desulfurization tail gas complexed iron desulfurization device according to claim 1, characterized in that: A spring (214) is sleeved on the outside of the telescopic rod (212). One end of the spring (214) is fixedly connected to the top surface of the circular plate (213), and the other end of the spring (214) is fixedly connected to the bottom surface of the telescopic column (211).

3. The MDEA desulfurization tail gas complexed iron desulfurization device according to claim 1, characterized in that: The top surface of the connecting shaft (28) is slidably connected to a connecting column (215). The top surface of the connecting column (215) is fixedly connected to a liquid distribution plate (216). The bottom inner side of the liquid distribution plate (216) is slidably connected to a support rod (218). The bottom end of the support rod (218) is fixedly connected to a push plate (217). A second spring (219) is sleeved on the outside of the support rod (218). One end of the second spring (219) is fixedly connected to the top surface of the push plate (217). The other end of the second spring (219) is fixedly connected to the bottom surface of the liquid distribution plate (216). An L-shaped connecting rod (220) is fixedly connected to the surface of the push plate (217).

4. The MDEA desulfurization tail gas complexed iron desulfurization device according to claim 3, characterized in that: The linkage component (3) includes a fixed tube (31), the bottom end of which is inserted into the liquid distribution plate (216) and fixedly connected to the liquid distribution plate (216). The end of the L-shaped connecting rod (220) away from the push plate (217) is fixedly connected to a sliding column (32). A connecting sleeve (33) is fixedly connected to the inner side of the sliding column (32). An arc-shaped guide groove (34) is opened on the inner side of the connecting sleeve (33).

5. The MDEA desulfurization tail gas complexed iron desulfurization device according to claim 4, characterized in that: The top surface of the fixed tube (31) is fixedly connected to the linkage plate (36), the top of the linkage plate (36) is fixedly connected to the connector (35), the outer side of the linkage plate (36) is in contact with the inner side of the connecting sleeve (33), and the side of the linkage plate (36) is provided with a limiting groove (37).

6. The MDEA desulfurization tail gas complexed iron desulfurization device according to claim 5, characterized in that: The inner side of the linkage disk (36) is rotatably connected to a turntable (38), and the side of the turntable (38) is fixedly connected to a guide rod (39). The guide rod (39) passes through the limiting groove (37) and is inserted into the arc-shaped guide groove (34) opened on the inner side of the connecting sleeve (33). The bottom surface of the turntable (38) is provided with a toggle groove (318), and the inner side of the linkage disk (36) is fixedly connected to a limiting frame (310).

7. The MDEA desulfurization tail gas complexed iron desulfurization device according to claim 6, characterized in that: The surface of the limiting frame (310) is provided with a short sliding groove (311). A sliding rod (312) is slidably connected to the inner side of the short sliding groove (311). A sealing block (313) is fixedly connected to the top of the sliding rod (312). A sliding rod (314) is fixedly connected to the top of the sealing block (313). The top of the sliding rod (314) is inserted into the inner side of the actuating groove (318).

8. The MDEA desulfurization tail gas complexed iron desulfurization device according to claim 3, characterized in that: A diversion pipe (315) is inserted into and fixedly connected to the inner side of the diversion plate (216). A retaining ring (317) is fixedly connected to one end of the diversion pipe (315) away from the diversion plate (216). The retaining ring (317) is fixedly connected to the inner wall of the desulfurization layer (6). A spray head (316) is provided at the bottom of the diversion pipe (315).

9. The MDEA desulfurization tail gas complexed iron desulfurization device according to claim 5, characterized in that: A water tank (8) is provided on the outside of the desulfurization tower base (1). A circulation pump (9) is provided on the top of the water tank (8). A water pump (10) is fixedly connected to the top of the circulation pump (9). The end of the water pump (10) away from the circulation pump (9) passes through the exhaust layer (7) and is fixedly connected to the connector (35). A rich liquid pipe (11) is provided on the side of the desulfurization tower base (1). A circulation pump (12) is connected to the right side of the rich liquid pipe (11). A regeneration tower (13) is connected to the end of the circulation pump (12) away from the rich liquid pipe (11). A circulation pump (15) is connected to the right side of the regeneration tower (13). A filter box (16) is connected to the end of the circulation pump (15) away from the regeneration tower (13). A gas pipe (14) is provided on the side of the regeneration tower (13). A gas guide plate (17) is provided on the inner side of the gas guide layer (4).

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