Heat recovery washing equipment for raw gas treatment
By designing heat recovery and washing equipment for waste gas treatment, clean strips, scrapers, rollers and scrapers are used to remove impurities in the inner and outer walls of the atomized pipe head, the problem of poor washing effect of waste gas in the existing technology is solved, and efficient water washing and energy savings are achieved.
Patent Information
- Application Number
- CN202411902878.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-03-21
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, during the washing process of waste gas inside the washing tower, impurities such as tar and dust are difficult to effectively remove, affecting the flowability of the nozzle and the washing effect.
A heat recovery and washing equipment for waste gas treatment is designed, including a washing tower, heat exchanger, spray head, atomization pipe head, auxiliary intercepting mechanism, etc. The clean bars of the atomization pipe head and components such as scrapers, rollers and scrapers, scrapers and scrapers are used to remove impurities in the inner and outer walls of the atomization pipe head, ensuring the stable spraying of water mist and effective mixing with waste gas.
It effectively removes impurities from the inner and outer walls of the atomized pipe head, improves the flowability and service life of the washing tower, enhances the washing effect, saves energy, and improves environmental protection.
Smart Images
Figure CN119662319A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of raw gas treatment, and in particular to a heat recovery water washing device for raw gas treatment. Background Art
[0002] A large amount of tail gas is generated during the production of lignite, which is generally called raw coal gas. Under the traditional model, every ton of lignite produced will produce 1,100 to 1,700 cubic meters of raw coal gas. The raw coal gas contains effective components such as carbon monoxide, hydrogen, and methane. It also contains tar, monsters, benzene ring organic matter, organic sulfur, organic chlorine, other trace impurities and dust that are difficult to handle. The nitrogen content is as high as over 42%, which is difficult to be utilized for high added value. Some lignite companies release the tail gas, and some lignite raw coal gas is used for combustion for power generation, calcination and reduction in the production process of metallic magnesium, and as a source of hydrogen required for coal tar hydrogenation, resulting in a waste of resources.
[0003] However, the prior art still has the following defects when used specifically: When the raw coal gas is inside the water washing tower, water is sprayed down from the nozzle on the top of the water washing tower to make the raw coal gas fully contact with water. During the water washing process, some impurities in the raw coal gas, such as tar, dust, and some sulfides, will be absorbed or adsorbed by water. For substances soluble in water such as tar, it is based on the dissolution equilibrium principle of solutes in solvents. When the tar in the raw coal gas contacts water, since tar has a certain solubility in water, the tar molecules will transfer from the raw coal gas phase to the water phase. For solid impurities such as dust, it is based on the adsorption and entrainment of water on solid particles. When water contacts the dust particles in the raw coal gas in the form of small water droplets, the dust particles will adhere to the surface of the water droplets and be removed as the water droplets fall. During the use of the water washing tower, the nozzle is located above the packing layer, which increases the probability of the nozzle contacting the impurities in the raw coal gas. If these impurities are not removed in time, it will affect the fluidity of the nozzle. When the blockage is serious, it is easy to reduce the water spraying effect, resulting in poor water washing effect.
[0004] In view of this, the present invention proposes a heat recovery water washing device for waste gas treatment to make up for and improve the shortcomings of the prior art. Summary of the invention
[0005] In order to solve the above technical problems, the present invention provides a heat recovery water washing device for raw gas treatment to solve the technical problems raised in the above background technology.
[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a heat recovery water washing device for raw gas treatment, comprising a water washing tower body, an air inlet pipe is fixedly connected to the outer wall of the bottom end of the water washing tower body, a packing layer is fixedly connected inside the water washing tower body, a heat exchanger is fixedly connected inside the air inlet pipe, an air outlet pipe is fixedly connected to the top of the water washing tower body, a circulating water tank is also fixedly connected to the outer wall of the bottom end of the water washing tower body, a water supply pipe is fixedly connected to the top of the circulating water tank, the top of the water supply pipe is arranged to penetrate the outer wall of the top end of the water washing tower body, a nozzle is fixedly connected to the top of the water supply pipe and located just above the packing layer, an auxiliary treatment mechanism for preventing accumulation of tiny impurities in the raw gas and avoiding blockage of the water supply port is arranged around the water outlet at the bottom of the nozzle, and an auxiliary interception mechanism for pre-filtering and reducing the content of larger particle impurities in the raw gas during the process of the raw gas entering the water washing tower body is arranged at the end of the air inlet pipe and located inside the water washing tower body.
[0007] Furthermore, the auxiliary management mechanism includes an atomizing pipe head fixedly connected to the bottom of the nozzle and located below the water spray port, the bottom of the atomizing pipe head is rotatably connected to a No. 1 tooth ring, the inner wall of the No. 1 tooth ring is evenly and fixedly connected to a plurality of support blocks, the tops of the plurality of support blocks are fixedly connected to support rods, the outer walls of the plurality of support rods are fixedly connected to cleaning strips, and a scraper is fixedly connected to the top of the No. 1 tooth ring and located on the outside of the atomizing pipe head.
[0008] Furthermore, a plurality of the atomizing pipe heads are evenly arranged at the bottom of the nozzle, and the number of the No. 1 gear ring, the scraper and the atomizing pipe head is the same.
[0009] Furthermore, the tops of the plurality of support rods are fixedly connected with rollers, and the outer walls of the plurality of support rods are also fixedly connected with scraping rods.
[0010] Furthermore, a rotating shaft is rotatably connected to the inner wall at the center of the nozzle, a first rotating blade is fixedly connected to the top of the rotating shaft and the inside of the connection between the water pipe and the nozzle, and a No. 2 gear ring is fixedly connected to the outer wall of the bottom end of the rotating shaft and located below the nozzle, and the No. 2 gear rings are engaged with multiple No. 1 gear rings.
[0011] Furthermore, an auxiliary mixing mechanism is provided at the bottom of the rotating shaft and below the No. 2 gear ring, and the auxiliary mixing mechanism includes a support rod fixedly connected to the bottom of the rotating shaft, a vertical plate is hinged on the top of the bottom end of the support rod, a mixing blade is fixedly connected to the outer wall of the vertical plate, a guide wheel is fixedly connected to the outer wall of the top end of the support rod, a pull rope is fixedly connected to the side wall of the top end of the vertical plate, a pressure block is provided between the outer wall of the bottom end of the support rod and the side wall of the bottom end of the vertical plate, and the end of the pull rope away from the vertical plate is fixedly connected to the top of the pressure block via the guide wheel.
[0012] Furthermore, four vertical plates are evenly arranged in a rectangular orientation at the top of the bottom end of the support rod, and the number of the mixing blades, guide wheels, pull ropes and pressure blocks is the same as the number of the vertical plates.
[0013] Furthermore, the auxiliary intercepting mechanism includes a filter cartridge fixedly connected to the inner wall of the bottom end of the water washing tower body, the filter cartridge is connected to the interior of the air inlet pipe, the top and bottom outer walls of the end of the filter cartridge away from the air inlet pipe are fixedly connected to limit rods, the outer walls of the two limit rods are sleeved with baffles, the outer walls of the baffles are evenly and fixedly connected with multiple diverter caps, the multiple diverter caps are all connected to the interior of the filter cartridge, and a discharge port is opened at the bottom of the filter cartridge.
[0014] Furthermore, the diameter of the baffle is larger than the opening diameter of the filter cartridge, and the outer contours of the plurality of diverter caps are all truncated cone-shaped.
[0015] Furthermore, a self-cleaning component is also provided inside the filter cartridge, and the self-cleaning component includes a cross bar fixedly connected to the inner wall of the filter cartridge away from the diverter cap, an eccentric shaft is rotatably connected to the interior at the center of the cross bar, a lifting block is fixedly connected to the outer wall at the center of the baffle away from the diverter cap, the eccentric shaft is located below the lifting block and cooperates with the lifting block, a second rotating blade is fixedly connected to the end of the eccentric shaft away from the lifting block, and a scraper is also fixedly connected to the outer wall of the eccentric shaft close to the cross bar.
[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The cleaning strip can be used to remove impurities adhering to the inner wall of the atomizing tube head, so as to avoid the accumulation of impurities and the influence of the fluidity of the atomizing tube head. In addition, when the No. 1 gear ring rotates, it will drive the scraper to rotate synchronously on the outer wall of the atomizing tube head, so as to scrape off the impurities adhering to the outer wall of the atomizing tube head, so as to avoid the erosion of the atomizing tube head by impurities, thereby improving the service life of the atomizing tube head. The roller is used to roll on the inner wall of the atomizing tube head under the action of friction, so as to drive the support rod to rotate on the top of the support block, and cooperate with the scraper rod to achieve the purpose of scraping off the impurities on the inner wall of the atomizing tube head that are difficult to sweep off, thereby ensuring the impurity removal effect, making the atomizing tube head cooperate with the nozzle to spray water mist more stably, avoiding the influence of impurity blockage on the water mist spraying effect, and at the same time, compared with direct water spraying, water mist is not only convenient to combine with raw gas, but also has the purpose of saving water. The water flow driven method does not consume excess energy, so that the environmental protection is improved.
[0017] (2) When the vertical plate and the mixing blades are flipped into place, the area enclosed by the mixing blades during rotation exceeds the area enclosed by the mixing blades in their initial state, and the mixing blades are in a comb-like shape, which not only increases the mixing range, but also accelerates the flow of water mist during the rotation of the mixing blades. As a result, when the water mist and the raw gas are combined, they can be fully mixed, which is beneficial for the impurities in the raw gas to be washed by water, thereby improving the washing effect.
[0018] (3) When the raw coal gas enters the filter cartridge from the air inlet pipe, it will first pass through the diverter cap. Since there are multiple diverter caps, the raw coal gas will be diverted into multiple separate gases when passing through the diverter caps. The diverter caps are shaped like a cone, which is convenient for intercepting larger particle impurities in the gas, such as coke powder, so that the larger particle impurities will roll into the filter cartridge and finally fall from the discharge port, playing a role of pre-filtration, reducing the content of larger particles in the raw coal gas, and thus facilitating subsequent water washing.
[0019] (4) Due to the interference fit between the eccentric shaft and the lifting block, when the raised part of the eccentric shaft contacts the bottom of the lifting block, the lifting block is lifted by utilizing the height difference, and then the baffle moves upward between the outer walls of the two limit rods along with the lifting of the lifting block. When the eccentric shaft does not interfere with the lifting block, the baffle will return to its original position. The above process is repeated, which can vibrate and remove the trapped coke powder impurities, thereby preventing the coke powder from being blocked inside the diverter cap due to untimely removal, thereby improving the fluidity and stability of the diverter cap. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention; Figure 2 It is a partial cross-sectional view of the three-dimensional structure of the water washing tower body of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the relevant components of the first rotating blade of the present invention; Figure 4 It is a side view stereoscopic structural diagram of the relevant components of the nozzle of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the relevant parts of the auxiliary governance mechanism of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the related parts of the first gear ring of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the relevant components of the auxiliary mixing mechanism of the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the relevant components of the auxiliary interception mechanism of the present invention; Fig. 9 It is a three-dimensional structural cross-sectional view of the relevant parts of the filter cartridge of the present invention.
[0021] The numbers in the figure are: 1, water washing tower body; 101, packing layer; 2, air inlet pipe; 201, heat exchanger; 3, air outlet pipe; 301, circulating water tank; 302, water pipe; 303, nozzle; 401, atomizing pipe head; 402, No. 1 gear ring; 403, support block; 404, support rod; 405, cleaning strip; 406, scraper; 501, roller; 502, scraper rod; 601, rotating shaft; 602 , the first rotating blade; 603, the second gear ring; 701, the support rod; 702, the vertical plate; 703, the mixing blade; 704, the guide wheel; 705, the pull rope; 706, the pressure block; 801, the filter cartridge; 802, the limit rod; 803, the baffle; 804, the diverter cap; 805, the discharge port; 901, the cross bar; 902, the eccentric shaft; 903, the lifting block; 904, the second rotating blade; 905, the scraper. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0023] Embodiments of the present invention: Please refer to Figures 1 to 9 As shown, a heat recovery water washing device for treating raw coal gas comprises a water washing tower body 1, an air inlet pipe 2 is fixedly connected to the outer wall of the bottom end of the water washing tower body 1, a packing layer 101 is fixedly connected inside the water washing tower body 1, a heat exchanger 201 is fixedly connected inside the air inlet pipe 2, an air outlet pipe 3 is fixedly connected to the top of the water washing tower body 1, a circulating water tank 301 is also fixedly connected to the outer wall of the bottom end of the water washing tower body 1, a water delivery pipe 302 is fixedly connected to the top of the circulating water tank 301, the top end of the water delivery pipe 302 is arranged to penetrate the outer wall of the top end of the water washing tower body 1, a nozzle 303 is fixedly connected to the top end of the water delivery pipe 302 and is located directly above the packing layer 101, an auxiliary treatment mechanism for preventing accumulation of tiny impurities in the raw coal gas and avoiding blockage of the water spray port is arranged around the water spray port at the bottom of the nozzle 303, and an auxiliary interception mechanism for pre-filtering and reducing the content of larger particle impurities in the raw coal gas during the process of the raw coal gas entering the water washing tower body 1 is arranged at the end of the air inlet pipe 2 and located inside the water washing tower body 1.
[0024] The auxiliary treatment mechanism includes an atomizing pipe head 401 fixedly connected to the bottom of the nozzle 303 and located below the water spray port, the bottom of the atomizing pipe head 401 is rotatably connected to a No. 1 toothed ring 402, a plurality of support blocks 403 are evenly and fixedly connected to the inner wall of the No. 1 toothed ring 402, a plurality of support blocks 403 are fixedly connected to the tops of the plurality of support blocks 403, a plurality of support rods 404 are fixedly connected to the outer walls of the plurality of support rods 404, a scraper 406 is fixedly connected to the top of the No. 1 toothed ring 402 and located outside the atomizing pipe head 401.
[0025] Among them, the No. 2 tooth ring 603 is meshed with the No. 1 tooth ring 402, so that the No. 1 tooth ring 402 can rotate with the support block 403 and the support rod 404 during the water spraying of the atomizer tube head 401. The cleaning strip 405 can be used to remove impurities adhering to the inner wall of the atomizer tube head 401 to avoid the accumulation of impurities and affect the fluidity of the atomizer tube head 401. In addition, when the No. 1 tooth ring 402 rotates, it will rotate synchronously with the scraper 406 on the outer wall of the atomizer tube head 401, so that the impurities adhering to the outer wall of the atomizer tube head 401 can be scraped off, which is beneficial to improve the cleanliness of the atomizer tube head 401, avoid impurities from corroding the atomizer tube head 401, and increase the service life of the atomizer tube head 401.
[0026] Preferably, atomizing tube heads 401 are evenly arranged at the bottom of the nozzle 303, and the number of No. 1 tooth rings 402 and scrapers 406 is the same as that of the atomizing tube heads 401. The tops of the multiple support rods 404 are fixedly connected to rollers 501, and the outer walls of the multiple support rods 404 are also fixedly connected to scraper rods 502. A rotating shaft 601 is rotatably connected to the inner wall at the center of the nozzle 303. The top of the rotating shaft 601 and the interior of the connection between the water pipe 302 and the nozzle 303 are fixedly connected to the first rotating blade 602. The outer wall of the bottom end of the rotating shaft 601 and located below the nozzle 303 is fixedly connected to a No. 2 tooth ring 603, and the No. 2 tooth rings 603 are all engaged with the multiple No. 1 tooth rings 402.
[0027] Preferably, an auxiliary mixing mechanism is provided at the bottom of the rotating shaft 601 and below the second gear ring 603, and the auxiliary mixing mechanism includes a support rod 701 fixedly connected to the bottom of the rotating shaft 601, a vertical plate 702 is hingedly connected to the top of the bottom end of the support rod 701, a mixing blade 703 is fixedly connected to the outer wall of the vertical plate 702, a guide wheel 704 is fixedly connected to the outer wall of the top end of the support rod 701, a pull rope 705 is fixedly connected to the side wall of the top end of the vertical plate 702, a pressure block 706 is provided between the outer wall of the bottom end of the support rod 701 and the side wall of the bottom end of the vertical plate 702, and the end of the pull rope 705 away from the vertical plate 702 is fixedly connected to the top of the pressure block 706 via the guide wheel 704, and four vertical plates 702 are evenly arranged in a rectangular orientation at the top of the bottom end of the support rod 701, and the number of mixing blades 703, guide wheels 704, pull ropes 705 and pressure blocks 706 is the same as the number of vertical plates 702.
[0028] Among them, since the length of the pull rope 705 is fixed, the pressing block 706 can move upward as the vertical plate 702 and the mixing blade 703 are flipped over. When the vertical plate 702 and the mixing blade 703 are flipped into place, the area enclosed by the mixing blade 703 during rotation exceeds the area enclosed by the mixing blade 703 in its initial state, and the mixing blade 703 is in a comb style, which not only increases the mixing range, but also accelerates the flow of water mist in the airflow generated during the rotation of the mixing blade 703, so that when the water mist is combined with the raw gas, it can play a role in sufficient mixing, which is beneficial to the impurities in the raw gas being washed with water, thereby improving the washing effect.
[0029] Preferably, the auxiliary interception mechanism includes a filter cartridge 801 fixedly connected to the inner wall of the bottom end of the water washing tower body 1, the filter cartridge 801 is connected to the inside of the air inlet pipe 2, the top and bottom outer walls of the end of the filter cartridge 801 away from the air inlet pipe 2 are fixedly connected to the limiting rod 802, the outer walls of the two limiting rods 802 are sleeved with baffles 803, the outer walls of the baffles 803 are evenly and fixedly connected with multiple diverter caps 804, the multiple diverter caps 804 are all connected to the inside of the filter cartridge 801, a discharge port 805 is opened at the bottom of the filter cartridge 801, the diameter of the baffle 803 is larger than the opening diameter of the filter cartridge 801, and the outer contours of the multiple diverter caps 804 are all circular The filter cartridge 801 is table-shaped, and a self-cleaning component is also provided inside. The self-cleaning component includes a cross bar 901 fixedly connected to the inner wall of the filter cartridge 801 away from the diverter cap 804. An eccentric shaft 902 is rotatably connected to the inner part of the cross bar 901 at the center. A lifting block 903 is fixedly connected to the outer wall of the baffle 803 away from the center of the diverter cap 804. The eccentric shaft 902 is located below the lifting block 903 and is in contact with the lifting block 903. A second rotating blade 904 is fixedly connected to the end of the eccentric shaft 902 away from the lifting block 903. A scraper 905 is also fixedly connected to the outer wall of the eccentric shaft 902 close to the cross bar 901.
[0030] Among them, the intercepted coke powder impurities are vibrated and removed, so that the coke powder is not removed in time and blocks the inside of the diverter cap 804, so that the fluidity and stability of the diverter cap 804 are improved. In addition, the eccentric shaft 902 will also rotate with the scraper 905, and the scraper 905 in the rotating state will be in continuous contact with the inner wall of the filter cartridge 801, so as to scrape off the impurities adhering to the inner wall of the filter cartridge 801, thereby ensuring the cleanliness of the inside of the filter cartridge 801 and facilitating the passage of raw coal gas.
[0031] The following are the complete usage steps and working principles of the above embodiment: When the device is in use, the raw gas enters the water washing tower body 1 through the air inlet pipe 2. Since the temperature of the raw gas is usually 800-900°C, the solubility of the gas in water will be reduced, and the removal effect of water washing on certain substances will be worse. At the same time, the heat in the raw gas is not fully utilized. The heat exchanger 201 is used to make the raw gas and the cold water pipeline exchange heat. The heat of the raw gas increases the temperature of the cold water, while the temperature of the raw gas itself decreases. Then, the raw gas with the reduced temperature enters the water washing tower body 1 for water washing purification, which not only realizes the recovery and utilization of the heat of the raw gas, but also reduces the temperature of the raw gas when it enters the water washing tower body 1, which is beneficial to the water washing process. After the temperature is reduced, the solubility of impurities such as tar in water will increase, thereby improving the purification effect of water washing. In addition, the heat in the raw gas is recovered by the heat exchanger 201, and this part of the heat can be used in other production links, such as preheating boiler water and providing workshop heating, thereby reducing additional energy consumption.
[0032] After the raw gas after heat recovery enters the water washing tower body 1, it will flow toward the top of the water washing tower body 1. The treated raw gas will be discharged through the outlet pipe 3. A packing layer 101 is set inside the water washing tower body 1 to increase the contact area between the raw gas and water, and at the same time prolong the residence time of the raw gas, so as to achieve a better water washing effect. Commonly used packings include ceramic packings, plastic packings and metal packings. Among them, ceramic packings have the characteristics of high temperature resistance and corrosion resistance, and are suitable for processing high temperature and highly corrosive raw gas. The raw gas is stored in the circulating water tank 301 through a water pump and a water pipe 302. The water is sprayed through the nozzle 303 and the atomizing pipe head 401, and the water can be sprayed evenly into fine water droplets, so that the raw gas is fully in contact with the water. During the water washing process, some impurities in the raw gas, such as tar, dust, and some sulfides, will be absorbed or adsorbed by the water, so that the tar will be dissolved in the water, and the dust will be carried down by the water. The water pipe 302 is used to transport water to the nozzle 303, so that the first rotating blade 602 rotates with the rotating shaft 601 under the impetus of the water flow, and the second gear ring 603 is meshed with the first gear ring 402, so that the first gear ring 402 can be used during the water spraying of the atomizing pipe head 401. The support block 403 and the support rod 404 can rotate, and the cleaning strip 405 can be used to remove impurities adhering to the inner wall of the atomizing tube head 401, so as to avoid the accumulation of impurities and affect the fluidity of the atomizing tube head 401. In addition, when the first gear ring 402 rotates, it will bring the scraper 406 to rotate synchronously on the outer wall of the atomizing tube head 401, so as to scrape off impurities adhering to the outer wall of the atomizing tube head 401, which is beneficial to improve the cleanliness of the atomizing tube head 401, avoid impurities from corroding the atomizing tube head 401, and prolong the service life of the atomizing tube head 401. In addition, when the support rod 404 rotates on the inner wall of the atomizing tube head 401, The roller 501 will roll on the inner wall of the atomizing tube head 401 under the action of friction, so that it can self-rotate with the support rod 404 on the top of the support block 403, and cooperate with the scraper rod 502 to achieve the purpose of scraping off the impurities on the inner wall of the atomizing tube head 401 that are difficult to sweep off, thereby ensuring the impurity removal effect, making the atomizing tube head 401 cooperate with the nozzle 303 to spray water mist more stably, avoiding impurities clogging and affecting the water mist spraying effect. At the same time, compared with direct water spraying, water mist is not only convenient to combine with raw coal gas, but also achieves the purpose of water saving. It adopts the water flow driven mode, does not consume excess energy, and improves environmental protection.
[0033] When the rotating shaft 601 rotates synchronously with the support rod 701, the vertical plate 702 and the mixing blade 703 are affected by the centrifugal force. When the centrifugal force generated is greater than the gravity of the pressure block 706, the vertical plate 702 and the mixing blade 703 will flip in the direction away from the support rod 701. At the same time, the guide wheel 704 is used to pull the pressure block 706 through the pull rope 705 when the vertical plate 702 and the mixing blade 703 are flipped. Since the length of the pull rope 705 is fixed, the pressure block 706 can move upward along with the flipping of the vertical plate 702 and the mixing blade 703. When the vertical plate 702 and the mixing blade 703 are flipped into place, the mixing blade 703 is in The area enclosed during rotation exceeds the area enclosed by the mixing blades 703 in their initial state, and the mixing blades 703 are comb-shaped, which not only increases the mixing range, but also accelerates the flow of water mist through the airflow generated during the rotation of the mixing blades 703, thereby achieving full mixing when the water mist is combined with the raw gas, which is beneficial for washing impurities in the raw gas, thereby improving the washing effect. When the support rod 701 stops rotating, since the gravity of the pressing block 706 is greater than that of the vertical plate 702 and the mixing blades 703, the pressing block 706 is reset under the action of its own gravity, and the vertical plate 702 and the mixing blades 703 are reset synchronously, which is convenient for next use.
[0034] In addition, after the raw coal gas enters the filter cartridge 801 from the air inlet pipe 2, it will first pass through the diverter cap 804. Since there are multiple diverter caps 804, the raw coal gas will be diverted into multiple separate gases when passing through the diverter caps 804, and the diverter caps 804 are in the shape of a frustum, which is convenient for intercepting larger particle impurities in the gas, such as coke powder, so that the larger particle impurities will roll into the filter cartridge 801 and finally fall from the discharge port 805, playing a role of pre-filtration, reducing the content of larger particles in the raw coal gas, and thus facilitating subsequent water washing. The raw coal gas input from the air inlet pipe 2 is used to blow the second rotating blade 904 to rotate, so that the second rotating blade 904 can rotate with the eccentric shaft 902. Since the eccentric shaft 902 is in conflict with the lifting block 903, the raised part of the eccentric shaft 902 is in conflict with the lifting block 903. 03 bottom, the height difference is used to lift the lifting block 903, so that the baffle 803 moves upward between the outer walls of the two limit rods 802 along with the lifting of the lifting block 903, and when the eccentric shaft 902 does not conflict with the lifting block 903, the baffle 803 will be reset. The above process is repeated, which can vibrate and remove the intercepted coke powder impurities, thereby preventing the coke powder from being blocked inside the diverter cap 804 due to untimely removal, thereby improving the fluidity and stability of the diverter cap 804. In addition, the eccentric shaft 902 will also rotate with the scraper 905, and the scraper 905 in the rotating state will continuously contact the inner wall of the filter cartridge 801, so as to scrape off the impurities adhering to the inner wall of the filter cartridge 801, thereby ensuring the cleanliness of the inside of the filter cartridge 801, which is beneficial to the passage of raw coal gas.
[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A heat recovery water washing device for treating waste gas, comprising a water washing tower body (1), wherein an air inlet pipe (2) is fixedly connected to the outer wall of the bottom end of the water washing tower body (1), a packing layer (101) is fixedly connected inside the water washing tower body (1), a heat exchanger (201) is fixedly connected inside the air inlet pipe (2), an air outlet pipe (3) is fixedly connected to the top of the water washing tower body (1), a circulating water tank (301) is also fixedly connected to the outer wall of the bottom end of the water washing tower body (1), a water delivery pipe (302) is fixedly connected to the top of the circulating water tank (301), the top end of the water delivery pipe (302) is arranged to penetrate the outer wall of the top end of the water washing tower body (1), and a nozzle (303) is fixedly connected to the top end of the water delivery pipe (302) and located directly above the packing layer (101), characterized in that: An auxiliary treatment mechanism is arranged around the water spray outlet at the bottom of the nozzle (303) to prevent the accumulation of tiny impurities in the raw gas and avoid clogging of the water spray outlet. An auxiliary interception mechanism is arranged at the end of the air inlet pipe (2) and located inside the water scrubber body (1) to pre-filter and reduce the content of larger particle impurities in the raw gas during the process of the raw gas entering the water scrubber body (1).
2. The heat recovery water washing equipment for treating waste gas according to claim 1 is characterized by: The auxiliary treatment mechanism comprises an atomizing pipe head (401) fixedly connected to the bottom of the nozzle (303) and located below the water spray port, the bottom of the atomizing pipe head (401) is rotatably connected to a No. 1 toothed ring (402), the inner wall of the No. 1 toothed ring (402) is evenly and fixedly connected to a plurality of support blocks (403), the tops of the plurality of support blocks (403) are all fixedly connected to support rods (404), the outer walls of the plurality of support rods (404) are all fixedly connected to cleaning strips (405), and the top of the No. 1 toothed ring (402) and located outside the atomizing pipe head (401) is fixedly connected to a scraper (406).
3. The heat recovery water washing equipment for treating waste gas according to claim 2 is characterized by: A plurality of the atomizing pipe heads (401) are evenly arranged at the bottom of the nozzle (303), and the number of the No. 1 gear ring (402) and the scraper (406) is the same as that of the atomizing pipe heads (401).
4. The heat recovery water washing equipment for treating waste gas according to claim 2 is characterized by: The tops of the plurality of support rods (404) are all fixedly connected to rollers (501), and the outer walls of the plurality of support rods (404) are also fixedly connected to scraper rods (502).
5. The heat recovery water washing equipment for treating waste gas according to claim 2 is characterized by: A rotating shaft (601) is rotatably connected to the inner wall at the center of the nozzle (303), a first rotating blade (602) is fixedly connected to the top of the rotating shaft (601) and located inside the connection between the water pipe (302) and the nozzle (303), and a second gear ring (603) is fixedly connected to the outer wall of the bottom end of the rotating shaft (601) and located below the nozzle (303), and each of the second gear rings (603) is meshed with a plurality of first gear rings (402).
6. The heat recovery water washing equipment for treating waste gas according to claim 5 is characterized by: An auxiliary mixing mechanism is arranged at the bottom of the rotating shaft (601) and below the second gear ring (603), and the auxiliary mixing mechanism comprises a support rod (701) fixedly connected to the bottom of the rotating shaft (601); a vertical plate (702) is hingedly connected to the top of the bottom end of the support rod (701); a mixing blade (703) is fixedly connected to the outer wall of the vertical plate (702); a guide wheel (704) is fixedly connected to the outer wall of the top end of the support rod (701); a pull rope (705) is fixedly connected to the side wall of the top end of the vertical plate (702); a pressure block (706) is arranged between the outer wall of the bottom end of the support rod (701) and the side wall of the bottom end of the vertical plate (702); and one end of the pull rope (705) away from the vertical plate (702) is fixedly connected to the top of the pressure block (706) via the guide wheel (704).
7. The heat recovery water washing equipment for treating waste gas according to claim 6 is characterized by: Four vertical plates (702) are evenly arranged in a rectangular position at the top of the bottom end of the support rod (701), and the number of the mixing blades (703), the guide wheel (704), the pull rope (705) and the pressure block (706) is the same as the number of the vertical plates (702).
8. The heat recovery water washing equipment for treating waste gas according to claim 1 is characterized by: The auxiliary interception mechanism comprises a filter cartridge (801) fixedly connected to the inner wall of the bottom end of the water washing tower body (1); the filter cartridge (801) is connected to the inside of the air inlet pipe (2); the top and bottom outer walls of the end of the filter cartridge (801) away from the air inlet pipe (2) are fixedly connected to a limit rod (802); baffles (803) are sleeved on the outer walls of the two limit rods (802); a plurality of diverter caps (804) are evenly fixedly connected to the outer walls of the baffles (803); the plurality of diverter caps (804) are connected to the inside of the filter cartridge (801); and a discharge port (805) is provided at the bottom of the filter cartridge (801).
9. The heat recovery water washing equipment for treating waste gas according to claim 8 is characterized by: The diameter of the baffle (803) is greater than the opening diameter of the filter cartridge (801), and the outer contours of the plurality of diversion caps (804) are all truncated cone-shaped.
10. The heat recovery water washing equipment for treating waste gas according to claim 8, characterized in that: A self-cleaning component is also provided inside the filter cartridge (801), and the self-cleaning component comprises a cross bar (901) fixedly connected to the inner wall of the filter cartridge (801) away from the diverter cap (804); an eccentric shaft (902) is rotatably connected to the inner wall of the cross bar (901) at the center; a lifting block (903) is fixedly connected to the outer wall of the baffle (803) at the center of the side away from the diverter cap (804); the eccentric shaft (902) is located below the lifting block (903) and is in contact with the lifting block (903); a second rotating blade (904) is fixedly connected to the end of the eccentric shaft (902) away from the lifting block (903); and a scraper (905) is also fixedly connected to the outer wall of the eccentric shaft (902) close to the cross bar (901).