A lime shaft kiln calcination tail gas purification device and a use method thereof

Abstract

The present application relates to the field of chemical equipment, especially to a lime shaft kiln calcination tail gas purification device and use method. The present application provides a lime shaft kiln calcination tail gas purification device and use method. A lime shaft kiln calcination tail gas purification device, comprising a connecting pipe and a circulating exchanger, the connecting pipe is fixedly connected with the circulating exchanger, further comprising a mounting ring and a support frame, etc., the mounting ring is fixedly installed between the connecting pipe and the connecting pipe of the circulating exchanger, and the circulating exchanger is provided with a support frame. The temperature of the carbon dioxide gas and the flue gas carried out by the pipe type circulating exchanger is exchanged into controllable temperature, so as to facilitate the subsequent purification work of the tail gas, and the exchanged clean hot air can also be delivered to the drying work of nano calcium carbonate, improve the utilization rate of production energy, at the same time, the roots blower will transmit the purified carbon dioxide to the carbonization tower for use, so as to improve the product quality and stabilize the specific surface area of calcium carbonate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of chemical equipment, and more particularly to a lime shaft kiln calcination tail gas purification device and use method. BACKGROUND

[0002] Lime, i.e. calcium oxide, is widely used in steel industry, calcium carbide industry, alumina industry, refractory material industry, etc., and is one of the necessary raw materials for these large-scale industries.

[0003] The reaction temperature in the process of calcining limestone is about 900 DEG C, and the temperature in the actual production is higher than the temperature, and in the production process, the excess heat is mainly taken away with the carbon dioxide flue gas and lost in the form of heat radiation. At present, in the calcium carbonate industry, the kiln gas purification device usually adopts a cyclone separator, a desulfurization tower, a washing tower and a gas-liquid separator to purify and separate the carbon dioxide in the tail gas, and then uses the purified carbon dioxide to carbonize the lime. However, the device needs to cool the tail gas generated by the shaft kiln naturally before purifying the carbon dioxide, so the pipeline line is often very complicated, which will lead to low carbon dioxide purification efficiency, thereby affecting the concentration of carbon dioxide during lime processing. Low concentration of carbon dioxide will lead to an increase in carbonization time, thereby increasing the production cost of enterprises. SUMMARY

[0004] In order to overcome the shortcomings that the existing device needs to cool the tail gas generated by the shaft kiln naturally before purifying the carbon dioxide, so the pipeline line is often very complicated, which will lead to low carbon dioxide purification efficiency, thereby affecting the concentration of carbon dioxide during lime processing, the present application provides a lime shaft kiln calcination tail gas purification device and use method to solve the above problems.

[0005] The technical scheme is: a lime shaft kiln calcination tail gas purification device, comprising a connecting pipe and a circulating exchanger, the connecting pipe is fixedly connected with the circulating exchanger, further comprising a mounting ring, a support frame, a film-coated high-density bag-type dust collector, a transmission pipe, an integrated controller, a gas guide pipe, a Roots blower, a carbonization tower, a mounting frame, a stepping motor, a threaded rod and a impurity removing ring, the mounting ring is fixedly installed between the connecting pipe and the circulating exchanger, the support frame is arranged below the right side of the circulating exchanger, the film-coated high-density bag-type dust collector is fixedly installed on the support frame, the transmission pipe is fixedly connected between the film-coated high-density bag-type dust collector and the circulating exchanger, the integrated controller is fixedly installed on the transmission pipe, the circulating exchanger and the film-coated high-density bag-type dust collector are electrically connected with the integrated controller, the film-coated high-density bag-type dust collector is fixedly connected with the gas guide pipe for gas transmission, the gas guide pipe is fixedly connected with the Roots blower, the Roots blower is fixedly connected with the carbonization tower, the mounting frame is fixedly installed on the connecting pipe, the stepping motor is fixedly installed on the mounting frame, the stepping motor is electrically connected with the integrated controller, the threaded rod is rotatably installed in the connecting pipe, the threaded rod is fixedly connected with the output shaft of the stepping motor, the impurity removing ring is slidably installed in the connecting pipe for removing impurities, and the impurity removing ring is threadedly connected with the threaded rod.

[0006] Further, the dust collecting hopper is further included, and a plurality of dust collecting hoppers for storing impurities are slidably installed on the film-coated high-density bag-type dust collector.

[0007] Further, the dust storage plate and the torsion spring are further included, the dust storage plate for temporarily storing impurities is rotatably installed on the impurity removing ring, and the torsion spring is fixedly arranged between the connecting portion of the dust storage plate and the impurity removing ring.

[0008] Further, the guide frame, the stop block, the guide rod, the connecting block and the return spring are further included, the guide frame is fixedly installed on the mounting ring, the mounting ring is provided with a dust storage groove for storing impurities, a plurality of stop blocks are slidably connected to the guide frame, a plurality of guide rods for guiding are fixedly installed on the connecting pipe, each guide rod is slidably connected with a connecting block, each connecting block is fixedly connected with a corresponding stop block, and a return spring is fixedly arranged between each connecting block and the connecting pipe.

[0009] Further, the servo motor, the first connecting rod, the first scraping block, the second scraping block and the return spring are further included, the servo motor is fixedly installed in the mounting ring, the servo motor is electrically connected with the integrated controller, and the servo motor is rotatably connected with the threaded rod, two first connecting rods are fixedly connected with the output shaft of the servo motor, the first scraping blocks for scraping impurities are fixedly connected to the distal ends of the two first connecting rods, the two first scraping blocks are slidably connected with the guide frame, the second scraping blocks are slidably connected to the distal sides of the two first scraping blocks, the two second scraping blocks are abutted with the stop blocks, and the return spring is fixedly arranged between each second scraping block and the corresponding first scraping block.

[0010] Further, the fixed rod, the lever, the second connecting rod and the U-shaped top frame are further included. A plurality of fixed rods are fixedly connected in the impurity removal ring. Each fixed rod is rotatably connected with a lever. The two impurity storage plates are fixedly connected with a second connecting rod. The second connecting rod corresponds to the fixed rod. The second connecting rod is slidably connected with the corresponding lever. The U-shaped top frame is fixedly connected in the connecting pipe. When the impurity removal ring moves downward, the lever abuts against the U-shaped top frame on the same side.

[0011] Further, the top block and the wedge-shaped top frame are further included. A plurality of top blocks are fixedly connected in the impurity removal ring. Each connecting block is fixedly connected with a wedge-shaped top frame. When the impurity removal ring moves downward, the top block abuts against the wedge-shaped top frame.

[0012] Further, the screen is further included. The screen for filtering is fixedly installed between the connecting portion of the guide frame and the mounting ring.

[0013] A use method of a lime shaft kiln calcination tail gas purification device, comprising the following steps:

[0014] S1: when the tail gas generated by the lime shaft kiln needs to be purified, first, the connecting pipe is fixedly connected with the top exhaust of the shaft kiln, and then the purification program is started through the integrated controller. The integrated controller starts the circulating heat exchanger, the membrane high-density bag-type dust collector and the Roots blower. The tail gas generated by the lime shaft kiln is transmitted to the circulating heat exchanger through the connecting pipe. The tail gas is conducted by the high-efficiency flocculation high-speed jet pipe in the circulating heat exchanger. The high-efficiency flocculation high-speed jet pipe increases the heat exchange efficiency of the circulating heat exchanger, so that the temperature exchange of the carbon dioxide gas and the flue gas brought out in the circulating heat exchanger becomes controllable temperature;

[0015] S2: after the temperature of the exhaust gas is lowered by the circulating heat exchanger, the exhaust gas is transmitted to the membrane high-density bag-type dust collector through the transmission pipe. The membrane high-density bag-type dust collector purifies and separates the physically cooled carbon dioxide and flue gas. The impurities generated during the process fall into the dust collection hopper for collection. Then, the Roots blower extracts the purified carbon dioxide in the membrane high-density bag-type dust collector, and transmits the purified carbon dioxide and flue gas to the carbonization tower for use.

[0016] S3: the integrated controller further starts the stepping motor. The stepping motor drives the threaded rod to rotate. The threaded rod drives the impurity removal ring to move up and down in the connecting pipe through the thread, so as to scrape off the impurities adhered to the inner side wall of the connecting pipe. The scraped impurities fall on the impurity storage plate for collection.

[0017] S4: as the impurity removal ring moves downward, when the U-shaped top frame contacts the corresponding lever, the U-shaped top frame pushes the lever to rotate along the corresponding fixed rod. The other end of the lever drives the impurity storage plate to flip downward through the two second connecting rods on the same side. The torsion springs are deformed. The impurities on the impurity storage plate fall into the guide frame for collection.

[0018] S5: as the impurity removing ring moves downward, the top block will push the corresponding wedge-shaped top frame to move in the direction away from each other, the wedge-shaped top frame will drive the corresponding connecting block to move synchronously along the guide rod, the return spring will be stretched, the connecting block will drive the corresponding blocking block to move in the direction away from each other, so as to open the guide frame, after losing the pushing of the blocking block, the return spring will reset to drive the scraping block two to move away from the corresponding scraping block one, at the same time, the integrated controller will start the servo motor, the servo motor will drive the corresponding scraping block one and scraping block two to rotate through the connecting rod one, so as to scrape the impurities in the guide frame to the direction of the impurity storage groove, and then the impurities in the connecting pipe are discharged outward, and the impurity storage groove can be cleaned regularly.

[0019] The beneficial effects of the present application are: 1. The present application exchanges the temperature of the carbon dioxide gas and the flue gas brought out into a controllable temperature through the tubular circulation exchanger, so as to facilitate the subsequent purification work of the tail gas, and the clean hot air exchanged can also be delivered to the drying work of nano calcium carbonate, so as to improve the utilization rate of production energy, and the Roots blower can deliver the purified carbon dioxide to the carbonization tower for use, so as to improve the product quality and stabilize the specific surface area of calcium carbonate.

[0020] 2. The present application scrapes the inner side wall of the connecting pipe through the impurity removing ring, and temporarily stores the impurities through the impurity storage plate, so as to prevent the impurities from directly falling into the circulation exchanger.

[0021] 3. The present application flips the impurity storage plate downward through the U-shaped top frame, so that the impurities on the impurity storage plate fall into the guide frame, and the blocking block is moved in the direction away from each other through the top block, so as to open the guide frame, and then the guide frame is scraped by the scraping block one and the scraping block two, so that the impurities can be discharged from the connecting pipe and fall into the impurity storage groove for collection. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the impurity removing mechanism of the present application.

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the connecting pipe of the present application.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the impurity removing ring, the impurity storage plate and the torsion spring of the present application.

[0026] Figure 5 It is a schematic diagram of the structure of part of the present application.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the guide frame, the blocking block and the scraping block one of the present application.

[0028] Figure 7 This is a three-dimensional structural diagram of the guide rod, connecting block, and scraper block of the present invention.

[0029] Figure 8 This is a cross-sectional structural diagram of scraper block one, scraper block two, and return spring of the present invention.

[0030] Figure 9 This is a three-dimensional structural diagram of the fixed rod, rocker arm, and connecting rod of the present invention.

[0031] Figure 10 This is a three-dimensional structural diagram of the U-shaped top frame and the wedge-shaped top frame of the present invention.

[0032] Reference numerals: 1_Connecting pipe, 2_Circulating exchanger, 201_Mounting ring, 3_Support frame, 4_Film-coated high-density bag filter, 401_Dust hopper, 5_Transfer pipe, 6_Integrated controller, 7_Air guide pipe, 8_Roots blower, 9_Carbonization tower, 1001_Mounting frame, 1002_Stepper motor, 1003_Threaded rod, 1004_Impuring ring, 1101_Impuring plate, 1102_Torsion spring, 1201_Guide frame, 12 02_Miscellaneous Storage Tank, 1203_Block, 1301_Guide Rod, 1302_Connecting Block, 1303_Reset Spring, 1401_Servo Motor, 1402_Connecting Rod One, 1403_Scraper One, 1404_Scraper Two, 1405_Return Spring, 1501_Fixing Rod, 1502_Pry Bar, 1503_Connecting Rod Two, 1504_U-shaped Top Frame, 1601_Top Block, 1602_Wedge-shaped Top Frame, 17_Screen. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] Example: A purification device for tail gas from lime vertical kiln calcination, such as... Figures 1-3As shown, including the connecting pipe 1, circulating exchanger 2, mounting ring 201, support frame 3, film high-density bag dust collector 4, transmission pipe 5, integrated controller 6, gas guide pipe 7, Roots blower 8, carbonization tower 9, mounting frame 1001, stepping motor 1002, threaded rod 1003 and impurity removal ring 1004, the left end of the connecting pipe 1 is bolted to the lime shaft kiln, the lower end of the connecting pipe 1 is bolted to the circulating exchanger 2, the exhaust gas is conducted by the high-efficiency flocculation high-speed jet pipe in the circulating exchanger 2, the high-efficiency flocculation high-speed jet pipe increases the heat exchange efficiency of the circulating exchanger 2, the mounting ring 201 is bolted between the connecting pipe 1 and the circulating exchanger 2, the lower right of the circulating exchanger 2 is provided with the support frame 3, the top surface of the support frame 3 is bolted to the film high-density bag dust collector 4, the transmission pipe 5 is bolted between the film high-density bag dust collector 4 and the circulating exchanger 2, the integrated controller 6 is bolted to the transmission pipe 5, the circulating exchanger 2 and the film high-density bag dust collector 4 are electrically connected to the integrated controller 6, the upper part of the right side of the film high-density bag dust collector 4 is bolted to the gas guide pipe 7, the lower end of the gas guide pipe 7 is bolted to the Roots blower 8, the rear of the Roots blower 8 is bolted to the carbonization tower 9, the Roots blower 8 transmits the purified carbon dioxide and flue gas to the carbonization tower 9 for use, the upper part of the connecting pipe 1 is bolted to the mounting frame 1001, the top surface of the mounting frame 1001 is bolted to the stepping motor 1002, the stepping motor 1002 is electrically connected to the integrated controller 6, the threaded rod 1003 is rotatably installed in the connecting pipe 1, the threaded rod 1003 is connected to the output shaft of the stepping motor 1002 through a shaft coupling, the stepping motor 1002 drives the impurity removal ring 1004 to move through the threaded rod 1003, the impurity removal ring 1004 is slidingly installed in the connecting pipe 1, and the impurity removal ring 1004 is threadedly connected to the threaded rod 1003.

[0035] As shown in Figure 1 , it further comprises a dust collecting hopper 401, and three dust collecting hoppers 401 are slidingly installed on the bottom surface of the film high-density bag dust collector 4, and the impurities generated by the film high-density bag dust collector 4 fall into the dust collecting hoppers 401 for collection.

[0036] As shown in Figure 1 and Figure 4 , it further comprises a dust storage plate 1101 and a torsional spring 1102, the dust storage plates 1101 are rotatably installed on the lower part of the impurity removal ring 1004 in front and back symmetry, the impurities scraped off by the impurity removal ring 1004 fall on the dust storage plates 1101 for collection, and the torsional springs 1102 are fixedly arranged between the connecting portions of the two dust storage plates 1101 and the impurity removal ring 1004.

[0037] As shown in Figure 1 , Figure 5 , Figure 6 and Figure 7As shown in the drawings, further comprising a guide frame 1201, a stopper 1203, a guide rod 1301, a connecting block 1302 and a reset spring 1303, the center of the top surface of the mounting ring 201 is provided with the guide frame 1201 through bolts, the top surface of the mounting ring 201 is provided with a sundry groove 1202, the sundry groove 1202 is below the guide frame 1201, the guide frame 1201 is slidably connected with four stoppers 1203 circumferentially, the lower end of the connecting pipe 1 is circumferentially provided with four guide rods 1301 through bolts, the guide rods 1301 correspond to the stoppers 1203 one by one, each guide rod 1301 is slidably connected with a connecting block 1302, the connecting block 1302 moves along the corresponding guide rod 1301, each connecting block 1302 is connected with the corresponding stopper 1203 through bolts, the connecting block 1302 drives the stopper 1203 to move synchronously, and the reset spring 1303 is fixed between each connecting block 1302 and the connecting pipe 1.

[0038] As shown in the drawings, Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown in the drawings, further comprising a servo motor 1401, a connecting rod 1402, a scraper 1403, a scraper 1404 and a return spring 1405, the center of the mounting ring 201 is provided with the servo motor 1401 through bolts, the servo motor 1401 is electrically connected with the integrated controller 6, the servo motor 1401 is below the threaded rod 1003, and the servo motor 1401 is rotatably connected with the threaded rod 1003, the output shaft of the servo motor 1401 is connected with the connecting rod 1402 through the shaft coupling, the ends of the two connecting rods 1402 away from each other are connected with the scraper 1403 through bolts, the two scrapers 1403 are located in the guide frame 1201, and the two scrapers 1403 are slidably connected with the guide frame 1201, the servo motor 1401 drives the corresponding scraper 1403 to rotate through the connecting rod 1402, so as to scrape the impurities in the guide frame 1201 to the direction of the sundry groove 1202, the sides of the two scrapers 1403 away from each other are slidably connected with the scraper 1404, the two scrapers 1404 abut against the stopper 1203, and the return spring 1405 is fixed between the scraper 1404 and the corresponding scraper 1403.

[0039] As shown in the drawings, Figure 1 , Figure 5 , Figure 9 and Figure 10As shown, it also includes fixed rods 1501, lever rods 1502, connecting rods two 1503 and U-shaped top frames 1504, four fixed rods 1501 are circumferentially connected to the inner side wall of the impurity removal ring 1004 by bolts, the bottom surface of each fixed rod 1501 is rotatably connected to a lever rod 1502, the bottom surface of each impurity storage plate 1101 is symmetrically connected to a connecting rod two 1503 by bolts, the connecting rod two 1503 corresponds to the fixed rod 1501, and the connecting rod two 1503 is slidably connected to the corresponding lever rod 1502, and the inner lower end of the connecting pipe 1 is symmetrically connected to a U-shaped top frame 1504 by bolts, when the impurity removal ring 1004 moves downward, the lever rod 1502 will abut against the U-shaped top frame 1504 on the same side, and the U-shaped top frame 1504 will push the lever rod 1502 to rotate along the corresponding fixed rod 1501.

[0040] As shown in Figure 1 , Figure 5 , Figure 9 and Figure 10 , it also includes top blocks 1601 and wedge-shaped top frames 1602, four top blocks 1601 are circumferentially fixedly connected to the inner side wall of the impurity removal ring 1004, and a wedge-shaped top frame 1602 is connected to the top surface of each connecting block 1302 by bolts, the top block 1601 is located directly above the corresponding wedge-shaped top frame 1602 on the same side, when the impurity removal ring 1004 moves downward, the top block 1601 will abut against the wedge-shaped top frame 1602, and the top block 1601 will push the corresponding wedge-shaped top frame 1602 to move away from each other.

[0041] As shown in Figure 1 , Figure 6 and Figure 7 , it also includes a screen 17, the screen 17 is installed between the connecting portion of the guide frame 1201 and the mounting ring 201 by bolts, and the screen 17 filters the impurities in the connecting pipe 1.

[0042] When the exhaust gas generated by the lime shaft kiln needs to be purified, first, the connecting pipe 1 is fixedly connected with the top exhaust of the shaft kiln, then the integrated controller 6 starts the purification program, the integrated controller 6 starts the circulating heat exchanger 2, the film high-density bag-type dust collector 4 and the Roots blower 8, the exhaust gas generated by the lime shaft kiln is transmitted to the circulating heat exchanger 2 through the connecting pipe 1, the exhaust gas is conducted by the high-efficiency flocculation high-speed blowing pipe in the circulating heat exchanger 2, the high-efficiency flocculation high-speed blowing pipe increases the heat exchange efficiency of the circulating heat exchanger 2, the temperature exchange of the carbon dioxide gas and the flue gas brought out in the circulating heat exchanger 2 is changed into controllable temperature, so as to facilitate the subsequent purification work of the exhaust gas, and the replaced clean hot air can also be transported to the drying work of nano calcium carbonate, improve the utilization rate of production energy, after the cooling of the circulating heat exchanger 2, the exhaust gas is transmitted to the film high-density bag-type dust collector 4 through the transmission pipe 5, the film high-density bag-type dust collector 4 fully purifies and separates the physically cooled carbon dioxide and flue gas, the impurities generated during the process are collected in the dust hopper 401, then the Roots blower 8 extracts the purified carbon dioxide in the film high-density bag-type dust collector 4, and transmits the purified carbon dioxide and flue gas to the carbonization tower 9 for use.

[0043] During the operation of the device, the integrated controller 6 will also start the stepper motor 1002, which will drive the threaded rod 1003 to rotate, and the threaded rod 1003 will drive the impurity removal ring 1004 to move up and down in the connecting pipe 1, thereby scraping off the impurities adhering to the inner wall of the connecting pipe 1, and the scraped impurities will fall on the impurity storage plate 1101 for collection. As the impurity removal ring 1004 moves downward, when the U-shaped top frame 1504 contacts the corresponding lever 1502, the U-shaped top frame 1504 will push the lever 1502 to rotate along the corresponding fixed rod 1501, and the other end of the lever 1502 will drive the impurity storage plate 1101 to flip downward through the two connecting rods 1503 on the same side, and the torsional spring 1102 will be deformed. The impurities on the impurity storage plate 1101 will fall into the guide frame 1201 for collection. As the impurity removal ring 1004 continues to move downward, the top block 1601 will push the corresponding wedge-shaped top frame 1602 to move away from each other, and the wedge-shaped top frame 1602 will drive the corresponding connecting block 1302 to move along the guide rod 1301 synchronously, and the return spring 1303 will be stretched. The connecting block 1302 will drive the corresponding stop block 1203 to move away from each other, thereby opening the guide frame 1201. After losing the push of the stop block 1203, the return spring 1405 will reset to drive the second scraping block 1404 to move away from the corresponding first scraping block 1403. At the same time, the integrated controller 6 will start the servo motor 1401, which will drive the corresponding first scraping block 1403 and second scraping block 1404 to rotate through the connecting rod 1402, thereby scraping the impurities in the guide frame 1201 to the direction of the impurity storage groove 1202, and then discharging the impurities in the connecting pipe 1 outward. The impurity storage groove 1202 can be cleaned regularly. When the impurity removal ring 1004 moves upward, the return spring 1303 will reset to drive the corresponding connecting block 1302 to move closer to each other, and the connecting block 1302 will drive the corresponding stop block 1203 and wedge-shaped top frame 1602 to move synchronously to the initial position. The stop block 1203 will push the second scraping block 1404 to compress back into the corresponding first scraping block 1403, and the return spring 1405 will be compressed again. When the U-shaped top frame 1504 is not in contact with the lever 1502, the torsional spring 1102 will reset to drive the corresponding impurity storage plate 1101 to rotate back to the initial position upward, thereby continuing to store the scraped impurities. In this way, the connecting pipe 1 is kept unobstructed.

[0044] A method for using a lime shaft kiln calcination tail gas purification device, comprising the following steps:

[0045] S1: when the exhaust gas generated by the lime shaft kiln needs to be purified, first fix the connecting pipe 1 with the top exhaust of the shaft kiln, then start the purification program through the integrated controller 6, the integrated controller 6 will start the circulating heat exchanger 2, the film high-density bag type dust collector 4 and the Roots blower 8, the exhaust gas generated by the lime shaft kiln will be transmitted to the circulating heat exchanger 2 through the connecting pipe 1, the exhaust gas will be conducted by the high-efficiency flocculation high-speed jet pipe in the circulating heat exchanger 2, the high-efficiency flocculation high-speed jet pipe will increase the heat exchange efficiency of the circulating heat exchanger 2, so that the temperature exchange of the carbon dioxide gas and the flue gas brought out in the circulating heat exchanger 2 becomes controllable temperature;

[0046] S2: after the cooling of the circulating heat exchanger 2, the exhaust gas will be transmitted to the film high-density bag type dust collector 4 through the transmission pipe 5, the film high-density bag type dust collector 4 will purify and separate the physically cooled carbon dioxide and flue gas, during which the impurities generated will fall into the dust hopper 401 for collection, then the Roots blower 8 will extract the purified carbon dioxide in the film high-density bag type dust collector 4, and transmit the purified carbon dioxide and flue gas to the carbonization tower 9 for use;

[0047] S3: the integrated controller 6 will also start the stepper motor 1002, which will drive the threaded rod 1003 to rotate, the threaded rod 1003 will drive the impurity removal ring 1004 to move up and down in the connecting pipe 1, so as to scrape off the impurities adhered to the inner wall of the connecting pipe 1, the scraped impurities will fall on the impurity storage plate 1101 for collection;

[0048] S4: with the downward movement of the impurity removal ring 1004, when the U-shaped top frame 1504 contacts the corresponding lever 1502, the U-shaped top frame 1504 will push the lever 1502 to rotate along the corresponding fixed rod 1501, the other end of the lever 1502 will drive the impurity storage plate 1101 to flip down through the two connecting rods 1503 on the same side, the torsional springs 1102 will be deformed, and the impurities on the impurity storage plate 1101 will fall into the guide frame 1201 for collection;

[0049] S5: as the impurity removing ring 1004 moves downward, the top block 1601 will push the corresponding wedge-shaped top frame 1602 to move in the direction away from each other, the wedge-shaped top frame 1602 will drive the corresponding connecting block 1302 to move along the guide rod 1301 synchronously, the reset spring 1303 will be stretched, the connecting block 1302 will drive the corresponding stop block 1203 to move in the direction away from each other, so as to open the guide frame 1201, after the stop block 1203 is removed, the back spring 1405 will reset the scraper block two 1404 to move in the direction away from the corresponding scraper block one 1403, at the same time, the integrated controller 6 will start the servo motor 1401, the servo motor 1401 will drive the corresponding scraper block one 1403 and scraper block two 1404 to rotate through the connecting rod one 1402, so as to scrape the impurities in the guide frame 1201 to the direction of the impurity storage groove 1202, so as to discharge the impurities in the connecting pipe 1 outward, and the impurity storage groove 1202 can be cleaned regularly.

[0050] The above embodiments are provided for those skilled in the art to implement or use the present application, those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present application, therefore the protection scope of the present application is not limited by the above embodiments, but should be the maximum scope meeting the innovative features mentioned in the claims.

Claims

1. A lime shaft kiln calcination tail gas purification device, comprising a connecting pipe (1) and a circulating exchanger (2), the circulating exchanger (2) is fixedly connected on the connecting pipe (1), characterized in that: The application further comprises a mounting ring (201), a support frame (3), a film-coated high-density bag-type dust collector (4), a transmission pipe (5), an integrated controller (6), a gas guide pipe (7), a Roots blower (8), a carbonization tower (9), a mounting frame (1001), a stepping motor (1002), a threaded rod (1003), and a foreign matter removing ring (1004). The mounting ring (201) is fixedly installed between the connection part of the circulation exchanger (2) and the connecting pipe (1). The lower right part of the circulation exchanger (2) is provided with the support frame (3). The support frame (3) is fixedly installed with the film-coated high-density bag-type dust collector (4). The film-coated high-density bag-type dust collector (4) is fixedly connected with the circulation exchanger (2) through the transmission pipe (5). The transmission pipe (5) is fixedly installed with the integrated controller (6). The circulation exchanger (2) and the film-coated high-density bag-type dust collector (4) are electrically connected with the integrated controller (6). The film-coated high-density bag-type dust collector (4) is fixedly connected with the gas guide pipe (7) for transmitting gas. The gas guide pipe (7) is fixedly connected with the Roots blower (8). The Roots blower (8) is fixedly connected with the carbonization tower (9). The connecting pipe (1) is fixedly installed with the mounting frame (1001). The mounting frame (1001) is fixedly installed with the stepping motor (1002). The stepping motor (1002) is electrically connected with the integrated controller (6). The connecting pipe (1) is rotatably installed with the threaded rod (1003). The threaded rod (1003) is fixedly connected with the output shaft of the stepping motor (1002). The connecting pipe (1) is slidably installed with the foreign matter removing ring (1004) for removing foreign matter. The foreign matter removing ring (1004) is threadedly connected with the threaded rod (1003). The application further comprises a guide frame (1201), a stop block (1203), a guide rod (1301), a connecting block (1302), and a return spring (1303). The mounting ring (201) is fixedly installed with the guide frame (1201). The mounting ring (201) is provided with a foreign matter storage groove (1202) for storing foreign matter. The guide frame (1201) is slidably connected with a plurality of stop blocks (1203). The connecting pipe (1) is fixedly installed with a plurality of guide rods (1301) for guiding. The guide rods (1301) correspond to the stop blocks (1203) one by one. Each guide rod (1301) is slidably connected with a connecting block (1302). Each connecting block (1302) is fixedly connected with a corresponding stop block (1203). Each connecting block (1302) and the connecting pipe (1) are fixedly provided with a return spring (1303). The servo motor (1401), the connecting rod one (1402), the scraper one (1403), the scraper two (1404) and the return spring (1405) are further included, the servo motor (1401) is fixedly installed in the mounting ring (201), the servo motor (1401) is electrically connected with the integrated controller (6), and the servo motor (1401) is rotatably connected with the threaded rod (1003), two connecting rod one (1402) are fixedly connected on the output shaft of the servo motor (1401), the two connecting rod one (1402) are fixedly connected with the scraper one (1403) for removing impurities at the ends away from each other, the two scraper one (1403) are slidably connected with the guide frame (1201), the two scraper two (1404) are slidably connected on the sides away from each other of the two scraper one (1403), the two scraper two (1404) are in abutment with the stop block (1203), and the return spring (1405) is fixedly arranged between the scraper two (1404) and the corresponding scraper one (1403).

2. A device for cleaning the calcination exhaust gas of a lime shaft kiln according to claim 1, characterized in that: The dust collecting hopper (401) is further included, and a plurality of dust collecting hoppers (401) for storing impurities are slidably installed on the coated high-density bag-type dust collector (4).

3. A device for cleaning the calcination off-gas of a lime shaft kiln according to claim 2, characterized in that: The impurity storage plate (1101) and the torsion spring (1102) are further included, the impurity storage plate (1101) for temporarily storing impurities is rotatably installed on the impurity removing ring (1004), and the torsion spring (1102) is fixedly arranged between the connection between the impurity storage plate (1101) and the impurity removing ring (1004).

4. A device for cleaning the calcination off-gas of a lime shaft kiln according to claim 3, characterized in that: The fixed rod (1501), the lever (1502), the connecting rod two (1503) and the U-shaped top frame (1504) are further included, a plurality of fixed rods (1501) are fixedly connected in the impurity removing ring (1004), the lever (1502) is rotatably connected on each fixed rod (1501), the connecting rod two (1503) is fixedly connected on the two impurity storage plates (1101), the connecting rod two (1503) corresponds to the fixed rod (1501), the connecting rod two (1503) is slidably connected with the corresponding lever (1502), and the U-shaped top frame (1504) is fixedly connected in the connecting pipe (1).

5. A device for cleaning the calcination off-gas of a lime shaft kiln according to claim 4, characterized in that: The top block (1601) and the wedge-shaped top frame (1602) are further included, a plurality of top blocks (1601) are fixedly connected in the impurity removing ring (1004), and the wedge-shaped top frame (1602) is fixedly connected on each connecting block (1302), when the impurity removing ring (1004) moves downwards, the top block (1601) abuts against the wedge-shaped top frame (1602).

6. A device for cleaning the calcination off-gas of a lime shaft kiln according to claim 5, characterized in that: The screen (17) is further included, and the screen (17) for filtering is fixedly installed between the connection between the guide frame (1201) and the mounting ring (201).

7. A method for using a lime shaft kiln calcination off-gas purification device, using the lime shaft kiln calcination off-gas purification device according to claim 6, characterized in that, The steps include: S1: when the exhaust gas generated by the lime shaft kiln needs to be purified, first fix the connecting pipe (1) with the top exhaust of the shaft kiln, then start the purification program through the integrated controller (6), the integrated controller (6) will start the circulating heat exchanger (2), the film high-density bag type dust collector (4) and the Roots blower (8), the exhaust gas generated by the lime shaft kiln will be transmitted to the circulating heat exchanger (2) through the connecting pipe (1), the exhaust gas will be conducted by the high-efficiency flocculation high-speed jet pipe in the circulating heat exchanger (2), the high-efficiency flocculation high-speed jet pipe will increase the heat exchange efficiency of the circulating heat exchanger (2), so that the temperature exchange of the carbon dioxide gas and the flue gas in the circulating heat exchanger (2) becomes controllable temperature; S2: after the temperature reduction of the circulating heat exchanger (2), the exhaust gas will be transmitted to the film high-density bag type dust collector (4) through the transmission pipe (5), the film high-density bag type dust collector (4) will purify and separate the physically cooled carbon dioxide and flue gas, during which the impurities generated will fall into the dust collecting hopper (401) for collection, then the Roots blower (8) will extract the purified carbon dioxide in the film high-density bag type dust collector (4), and transmit the purified carbon dioxide and flue gas to the carbonization tower (9) for use; S3: the integrated controller (6) will also start the stepper motor (1002), which will drive the threaded rod (1003) to rotate, the threaded rod (1003) will drive the impurity removal ring (1004) to move up and down in the connecting pipe (1) through the thread, so as to scrape off the impurities adhered to the inner wall of the connecting pipe (1), the scraped impurities will fall on the impurity storage plate (1101) for collection; S4: with the downward movement of the impurity removal ring (1004), when the U-shaped top frame (1504) contacts the corresponding lever (1502), the U-shaped top frame (1504) will push the lever (1502) to rotate along the corresponding fixed rod (1501), the other end of the lever (1502) will drive the impurity storage plate (1101) to flip down through the two connecting rods (1503) on the same side, the torsional springs (1102) will be deformed, and the impurities on the impurity storage plate (1101) will fall into the guide frame (1201) for collection; S5: as the impurity removal ring (1004) moves down, the top block (1601) will push the corresponding wedge-shaped top frame (1602) to move away from each other, the wedge-shaped top frame (1602) will drive the corresponding connecting block (1302) to move along the guide rod (1301) synchronously, the reset spring (1303) will be stretched, the connecting block (1302) will drive the corresponding stop block (1203) to move away from each other, thereby opening the guide frame (1201), after losing the push of the stop block (1203), the return spring (1405) will reset to drive the scraper block two (1404) to move away from the corresponding scraper block one (1403), at the same time, the integrated controller (6) will start the servo motor (1401), the servo motor (1401) will drive the corresponding scraper block one (1403) and scraper block two (1404) to rotate through the connecting rod one (1402), thereby scraping the impurities in the guide frame (1201) to the direction of the impurity storage groove (1202), so as to discharge the impurities in the connecting pipe (1) outward, and the impurity storage groove (1202) can be cleaned regularly.

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