Desulfurization and dust removal equipment and method for waste gas emission treatment of coal-fired boiler

Abstract

The invention discloses desulfurization and dust removal equipment and method for coal-fired boiler waste gas emission treatment, and the desulfurization and dust removal equipment comprises a dust falling assembly, a water cooling assembly, a conveying assembly, a desulfurization assembly and a spraying assembly. The waste gas in the desulfurization tower is in full contact with the desulfurization liquid, the better desulfurization effect of the waste gas in the desulfurization tower is guaranteed, the waste gas desulfurization time is saved, the waste gas desulfurization working efficiency of the equipment is further improved, meanwhile, the water cooling assembly and the spraying assembly are matched to work, waste gas cooling treatment is facilitated, and the waste gas desulfurization efficiency is improved. The flow velocity of the waste gas in the desulfurization tower is reduced, the waste gas and the desulfurization liquid have more sufficient contact time for desulfurization, the equipment is prevented from being deformed and damaged due to thermal expansion and cold contraction, the overall service life of the equipment is prolonged, and the safety of the equipment during use is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mine crack repair applications, specifically to a desulfurization and dust removal device for the treatment of waste gas emissions from coal-fired boilers, and also to a desulfurization and dust removal method for the treatment of waste gas emissions from coal-fired boilers. Background Art

[0002] During the mining process of mines, due to various factors such as geological conditions and mining methods, various cracks will inevitably appear. These cracks will not only affect the stability of the mines, but may also lead to problems such as groundwater leakage and ore loss, seriously threatening the safe production and economic benefits of the mines. In addition, mine cracks may also damage the surrounding ecological environment, such as triggering geological disasters such as ground collapses and debris flows, affecting the lives and property safety of surrounding residents. Therefore, it is crucial to repair mine cracks in a timely manner through grouting and backfilling equipment.

[0003] However, the existing desulfurization and dust removal devices for the treatment of waste gas emissions from coal-fired boilers still have great defects when in use. The mortar injected into the cracks by the existing desulfurization and dust removal devices for the treatment of waste gas emissions from coal-fired boilers often cannot fill into every corner and subtle part of the cracks, and it is easy to have dead corners and cavities in the cracks, resulting in a poor filling effect. Moreover, the existing desulfurization and dust removal devices for the treatment of waste gas emissions from coal-fired boilers have poor flexibility, unable to carry out grouting and backfilling operations on mine cracks with different orientations, and it is relatively difficult for the existing desulfurization and dust removal devices for the treatment of waste gas emissions from coal-fired boilers to fill mine cracks in different areas, leading to a low working efficiency of crack grouting. Summary of the Invention

[0004] The purpose of the present invention is to provide a desulfurization and dust removal device for the treatment of waste gas emissions from coal-fired boilers, which solves the problem that the existing desulfurization and dust removal devices for the treatment of waste gas emissions from coal-fired boilers use a large amount of water and desulfurization liquid for desulfurization, resulting in a high cost of waste gas desulfurization and dust removal.

[0005] The purpose of the present invention is also to provide a desulfurization and dust removal method for the treatment of waste gas emissions from coal-fired boilers.

[0006] The first technical solution adopted by the present invention is: a desulfurization and dust removal device for the treatment of waste gas emissions from coal-fired boilers, including a dust removal component, a conveying component, a desulfurization component, and a spraying component connected in sequence. The dust removal component is connected to a water cooling component; the dust removal component includes a water tank, one side of the water tank is connected with a gas pipeline, and the middle part of the other side is provided with an air outlet, and the lower end of the gas pipeline is immersed in the water body; The conveying component includes an air inlet pipe and an air outlet pipe connected to the air outlet in sequence, and a fan is installed between the air inlet pipe and the air outlet pipe; the desulfurization component includes a desulfurization tower, and a communication pipe is provided on the outer side wall of the desulfurization tower, and the air outlet pipe is connected to the communication pipe; the spraying component includes a liquid storage tank, and a spraying unit is arranged at the top of the outer side wall of the liquid storage tank.

[0007] The features of the present invention also lie in that, Preferably, a first bracket is welded to the bottom of the water tank, a filter plate is arranged in the middle of the water tank, a cleaning unit is arranged below the filter plate, and a first valve is arranged at the bottom of the water tank. Preferably, one end of the cleaning unit is provided with a first hydraulic cylinder, the first hydraulic cylinder is connected to the outer side wall of the water tank by bolts, one end of the first hydraulic cylinder is cooperatively connected with a first hydraulic rod, one end of the first hydraulic rod is connected to a scraper by bolts, and the top of the scraper is attached to the filter plate.

[0008] Preferably, the water cooling assembly is arranged on the side of the water tank far from the gas transmission pipe. The water cooling assembly includes a second bracket, a water storage tank is welded to the top of the second bracket, a water outlet pipe is connected to one side of the top of the water storage tank, a first water pump is installed on the water outlet pipe, one end of the water outlet pipe is connected to the water tank, a water extraction pipe is connected to the bottom of the water storage tank close to the water tank, the water extraction pipe is connected to the bottom of the water tank, a second water pump is installed on the water extraction pipe, and a water inlet is opened at the top of the water storage tank.

[0009] Preferably, a third bracket is welded to the bottom of the desulfurization tower. The desulfurization tower has a cylindrical structure. An eddy current unit is arranged in the middle of the desulfurization tower. An air pump is installed at the top of the desulfurization tower close to the eddy current unit. A second valve is arranged at the bottom of the desulfurization tower.

[0010] Preferably, the eddy current unit includes a second hydraulic cylinder, the bottom of the second hydraulic cylinder is cooperatively connected with a second hydraulic rod, and the bottom of the second hydraulic rod is connected to an impeller by bolts.

[0011] Preferably, the liquid storage tank has a cylindrical structure. A fourth bracket is welded to the bottom of the liquid storage tank. A mixing unit is arranged in the middle of the liquid storage tank. A motor is installed at the top of the mixing unit. The bottom of the motor is movably connected to a third hydraulic cylinder through a rotating shaft. The bottom of the third hydraulic cylinder is cooperatively connected with a third hydraulic rod. A rotating rod is arranged at the bottom of the third hydraulic rod, and a plurality of blocking rods are welded at equal intervals on the rotating rod.

[0012] Preferably, the spraying unit includes a liquid outlet pipe. One end of the liquid outlet pipe is connected to the liquid storage tank. A liquid inlet is arranged on one side of the top of the outer side wall of the liquid storage tank. A third water pump is installed on the liquid outlet pipe. Two elbows are symmetrically arranged on both sides of one end of the liquid outlet pipe. A plurality of nozzles are arranged at equal intervals at the bottom of the two elbows. The elbows are arranged inside the desulfurization tower. A liquid extraction pipe is arranged at the bottom of the liquid storage tank. A fourth water pump is installed on the liquid extraction pipe. The liquid extraction pipe is connected to the bottom of the outer side wall of the bottom of the desulfurization tower.

[0013] The second technical solution adopted by the present invention is a desulfurization and dust removal method for the exhaust gas emission treatment of coal-fired boilers. The exhaust gas of the coal-fired boiler is transported to the dust removal component through a gas transmission pipe for water-cooled dust removal; the transportation component transports the exhaust gas after water-cooled dust removal to the desulfurization tower through a fan for desulfurization treatment; specifically, it includes the following steps: Step 1: Pass the waste gas into the water in the water tank through the gas pipeline. The dust in the waste gas falls to the bottom of the water tank after being washed by water. At the same time, turn on the first water pump on the water outlet pipe and the second water pump on the water suction pipe to carry out heat and cold exchange on the water in the water tank, maintain the water temperature of the water tank, and cooperate with the first hydraulic cylinder to drive the scraper at one end of the first hydraulic rod to move. The scraper removes the waste gas dust adhered to the bottom of the filter plate. Step 2: Turn on the fan on the conveying component. The fan conveys the waste gas in the water tank to the desulfurization tower through the air inlet pipe and the air outlet pipe. Turn on the third water pump on the spraying unit. The third water pump moves the desulfurization liquid in the liquid storage tank to a number of spray heads at the bottom of the two elbows through the liquid outlet pipe to carry out desulfurization treatment on the waste gas in the desulfurization tower. At the same time, cooperate with the eddy current unit, and the second hydraulic cylinder drives the impeller at the bottom of the second hydraulic rod to move up and down, so that the waste gas in the desulfurization tower is in full contact with the desulfurization liquid. Step 3: Turn on the fourth water pump on the liquid suction pipe. The fourth water pump pumps the desulfurization liquid in the desulfurization tower back to the liquid storage tank for recycling. At the same time, turn on the motor on the mixing unit and the third hydraulic cylinder drives the rotating rod at the bottom of the third hydraulic rod to move up and down. The blocking rod on the rotating rod stirs the desulfurization liquid in the liquid storage tank to ensure the concentration of the desulfurization liquid.

[0014] The beneficial effects of the present invention: 1. Pass the waste gas into the water in the water tank through the gas pipeline, which is convenient for the dust in the waste gas to fall to the bottom of the water tank after being washed by water, thus completing the dust removal operation of the coal slag boiler gas. At the same time, a filter plate is arranged in the middle of the water tank. The filter plate separates and disperses the waste gas, which is beneficial for the waste gas to be in full contact with the water, ensuring that the dust removal component removes dust from the waste gas more thoroughly. Secondly, cooperate with turning on the first water pump on the water outlet pipe and the second water pump on the water suction pipe to carry out heat and cold exchange on the water in the water tank. On the one hand, when the water in the water storage tank circulates, it can maintain relatively stable water quality and temperature in the water tank, not only avoiding the influence of large fluctuations in water temperature on the dust removal effect and ensuring the consistency of the dust removal efficiency, but also being beneficial for avoiding unnecessary damage to the equipment caused by too high water temperature. On the other hand, through the water cooling component, the water in the water tank is recycled, which is not only beneficial for improving the utilization rate of water resources, reducing the water consumption, but also avoiding the situation of random discharge of water resources, further being beneficial for environmental protection. At the same time, cooperate with the first hydraulic cylinder to drive the scraper at one end of the first hydraulic rod to move. The scraper removes the waste gas dust adhered to the bottom of the filter plate, which is not only beneficial for the filter plate to carry out dust filtering operation for a long time, but also beneficial for precipitating the dust in the waste gas in the water tank for centralized discharge.

[0015] 2. By turning on the fan on the conveying component, it is convenient for the fan to transport the dust-removed waste gas in the water tank to the desulfurization tower through the intake pipe and the outlet pipe. Meanwhile, by turning on the third water pump on the spraying unit, the third water pump moves the desulfurization liquid in the liquid storage tank to a number of spray heads at the bottom of the two elbows through the liquid outlet pipe, which is conducive to the spraying unit spraying the desulfurization liquid more evenly, enabling the waste gas in the desulfurization tower to fully contact with the desulfurization liquid, ensuring a better desulfurization effect of the waste gas in the desulfurization tower. At the same time, in cooperation with the eddy current unit, the second hydraulic cylinder drives the impeller at the bottom of the second hydraulic rod to move up and down, which is conducive to the waste gas introduced into the desulfurization tower to roll over. This not only helps the spraying unit to more comprehensively desulfurize the waste gas in the desulfurization tower, but also helps to save the time for waste gas desulfurization, further improving the working efficiency of the equipment for waste gas desulfurization.

[0016] 3. By turning on the fourth water pump on the liquid extraction pipe, the fourth water pump pumps the desulfurization liquid in the desulfurization tower back to the liquid storage tank for recycling, reducing the consumption of desulfurization agents, thereby reducing the economic cost of waste gas desulfurization. Secondly, by turning on the motor on the mixing unit and the third hydraulic cylinder drives the rotating rod at the bottom of the third hydraulic rod to move up and down, the blocking rod on the rotating rod stirs the desulfurization liquid in the liquid storage tank, ensuring that the concentration of the desulfurization liquid used for waste gas desulfurization is more uniform, avoiding the accumulation of desulfurization agents and blocking of spray heads, thus ensuring that the equipment smoothly and orderly conducts desulfurization operations on waste gas. At the same time, through the mutual cooperation between the water cooling component and the spraying component, it is conducive to cooling the waste gas. This not only helps to reduce the flow rate of the waste gas in the desulfurization tower, enabling the waste gas and the desulfurization liquid to have more sufficient contact time for the desulfurization process, but also prevents the equipment from deforming and being damaged due to thermal expansion and contraction, thereby helping to extend the overall service life of the equipment, reducing the equipment maintenance and replacement costs, and further improving the safety of the equipment during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the dust removal component in the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the cleaning unit in the present invention.

[0021] Figure 4 It is a schematic diagram of the connection cross-section of the gas transmission pipe and the water tank in the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the water cooling component in the present invention.

[0023] Figure 6Schematic structural diagram of the conveying component in the present invention.

[0024] Figure 7 Schematic structural diagram of the desulfurization component in the present invention.

[0025] Figure 8 Schematic structural diagram of the eddy current unit in the present invention.

[0026] Figure 9 Schematic structural diagram of the spraying component in the present invention.

[0027] Figure 10 Front view of the mixing unit in the present invention.

[0028] Figure 11 Schematic structural diagram of the spraying unit in the present invention.

[0029] In the figure: 1. Dust removal component; 101. First bracket; 102. Water tank; 103. Air delivery pipe; 104. Filter plate; 105. Cleaning unit; 1051. First hydraulic cylinder; 1052. First hydraulic rod; 1053. Scraper; 106. Air outlet; 2. Water cooling component; 201. Second bracket; 202. Water storage tank; 203. Water outlet pipe; 204. First water pump; 205. Water extraction pipe; 206. Second water pump; 3. Conveying component; 301. Fan; 302. Air inlet pipe; 303. Air outlet pipe; 4. Desulfurization component; 401. Third bracket; 402. Desulfurization tower; 403. Connecting pipe; 404. Eddy current unit; 4041. Second hydraulic cylinder; 4042. Second hydraulic rod; 4043. Impeller; 405. Air pump; 5. Spraying component; 501. Fourth bracket; 502. Liquid storage tank; 503. Mixing unit; 5031. Motor; 5032. Third hydraulic cylinder; 5033. Third hydraulic rod; 5034. Rotating rod; 5035. Stop rod; 504. Spraying unit; 5041. Liquid outlet pipe; 5042. Third water pump; 5043. Elbow pipe; 5044. Nozzle; 505. Liquid extraction pipe; 506. Fourth water pump. Detailed implementation manners

[0030] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1 The present invention aims to solve the problems of existing desulfurization and dust removal equipment for treating waste gas emissions from coal-fired boilers. When desulfurizing and removing dust from waste gas, a large amount of water and desulfurization liquid are often used, resulting in low resource utilization rate and high costs for waste gas desulfurization and dust removal. In addition, the existing desulfurization and dust removal equipment for treating waste gas emissions from coal-fired boilers has low safety. High-temperature waste gas is likely to cause unnecessary damage to the equipment during desulfurization and dust removal, which is not conducive to the continuous operation of the equipment. Moreover, the existing desulfurization and dust removal equipment for treating waste gas emissions from coal-fired boilers not only fails to perform comprehensive desulfurization and dust removal operations on waste gas, resulting in poor desulfurization effects, but also leads to low work efficiency of waste gas desulfurization and dust removal. The desulfurization and dust removal equipment for treating waste gas emissions from coal-fired boilers proposed to solve these problems is as follows Figures 1-11 As shown in Figures 1-11 , it includes a dust removal component 1, a water cooling component 2, a conveying component 3, a desulfurization component 4, and a spraying component 5. A water tank 102 is arranged on the dust removal component 1. One side of the water tank 102 is connected with a gas pipeline 103. The end of the gas pipeline 103 is arranged below the water level line in the water tank 102, effectively avoiding the situation where the water in the water tank 102 flows back into the gas pipeline 103 and causing excessive pressure. The water cooling component 2 is arranged on one side of the water tank 102 away from the gas pipeline 103. The waste gas is introduced into the water in the water tank 102 through the gas pipeline 103, facilitating the dust in the waste gas to fall to the bottom of the water tank 102 after being washed by water, thereby completing the dust removal operation of the coal slag boiler gas. In the middle of one side of the water tank 102 close to the water cooling component 2, there is an air outlet 106. One end of the conveying component 3 is connected to the air outlet 106. At one end of the conveying component 3 close to the air outlet 106, there is an air inlet pipe 302. One end of the air inlet pipe 302 is equipped with a fan 301. One end of the fan 301 is connected with an air outlet pipe 303. A desulfurization tower 402 is arranged on the desulfurization component 4. By turning on the fan 301 on the conveying component 3, it is convenient for the fan 301 to convey the dust-removed waste gas in the water tank 102 to the desulfurization tower 402 through the air inlet pipe 302 and the air outlet pipe 303 for desulfurization treatment. A communicating pipe 403 is opened on the outer wall of the desulfurization tower 402. The air outlet pipe 303 is connected with the communicating pipe 403. A liquid storage tank 502 is arranged on the spraying component 5. A spraying unit 504 is arranged at the top of the outer wall of the liquid storage tank 502.

[0032] Through the mutual cooperation between the water cooling component 2 and the spraying component 5, it is beneficial to cool the waste gas. This not only helps to reduce the flow rate of the waste gas in the desulfurization tower 402, enabling the waste gas to have more sufficient contact time with the desulfurization liquid for the desulfurization process, but also avoids deformation and damage of the equipment due to thermal expansion and contraction. Therefore, it is beneficial to extend the overall service life of the equipment, reduce equipment maintenance and replacement costs, and further improve the safety of the equipment during use.

[0033] Embodiment 2 On the basis of Example 1, a first bracket 101 is welded to the bottom of the water tank 102, and a filter plate 104 is arranged in the middle of the water tank 102. By arranging the filter plate 104 in the middle of the water tank 102, the filter plate 104 can separate the exhaust gas, which is beneficial for the exhaust gas to fully contact with water, thereby ensuring that the dust reduction component 1 can more thoroughly remove dust from the exhaust gas. A cleaning unit 105 is arranged below the filter plate 104, and a first valve is arranged at the bottom of the water tank 102. Opening the first valve can facilitate the centralized discharge of dust accumulated at the bottom of the water tank 102. A first hydraulic cylinder 1051 is provided at one end of the cleaning unit 105, and the first hydraulic cylinder 1051 is connected to the outer wall of the water tank 102 by bolts. A first hydraulic rod 1052 is connected to one end of the first hydraulic cylinder 1051, and a scraper 1053 is connected to one end of the first hydraulic rod 1052 by bolts. The top of the scraper 1053 is in contact with the filter plate 104. The first hydraulic cylinder 1051 drives the scraper 1053 at one end of the first hydraulic rod 1052 to move, and the scraper 1053 removes the exhaust gas dust adhered to the bottom of the filter plate 104, which is not only beneficial for the filter plate 104 to perform dust filtering operations for a long time, but also beneficial for the dust in the exhaust gas to be precipitated in the water tank 102 for centralized discharge.

[0034] Example 3 On the basis of Example 2, a second bracket 201 is provided at the bottom of the water cooling component 2, a water tank 202 is welded on the top of the second bracket 201, a water outlet pipe 203 is connected to one side of the top of the water tank 202, a first water pump 204 is installed on the water outlet pipe 203, one end of the water outlet pipe 203 is connected to the water tank 102, a pumping pipe 205 is connected to the bottom of the water tank 202 near the water tank 102, the pumping pipe 205 is connected to the bottom of the water tank 102, a second water pump 206 is installed on the pumping pipe 205, the first water pump 204 on the water outlet pipe 203 and the second water pump 206 on the pumping pipe 205 are turned on to pump water in the water tank 102. The exchange of cold and heat, on the one hand, allows the water in the water tank 202 to maintain a relatively stable water quality and temperature in the water tank 102 during the circulation process, which not only avoids the dust reduction effect being affected by large fluctuations in water temperature and ensures the consistency of dust reduction efficiency, but also helps to avoid unnecessary damage to the equipment caused by excessive water temperature. On the other hand, the water in the water tank 102 is recycled through the water cooling component 2, which not only helps to improve the utilization rate of water resources and reduce water usage, but also avoids the indiscriminate discharge of water resources, which is further beneficial to protecting the environment. A water inlet is provided on the top of the water tank 202, and water is added to the water tank 202 through the water inlet.

[0035] Example 4 On the basis of Embodiment 3, a third support 401 is welded to the bottom of the desulfurization tower 402. The desulfurization tower 402 has a cylindrical structure. An eddy current unit 404 is arranged in the middle of the desulfurization tower 402. An air pump 405 is installed at the top of the desulfurization tower 402 near the eddy current unit 404. Turning on the air pump 405 facilitates discharging the waste gas after desulfurization and dust removal from the desulfurization tower 402. A second valve is arranged at the bottom of the desulfurization tower 402. Opening the second valve facilitates replacing the desulfurization liquid in the desulfurization tower 402.

[0036] In an alternative embodiment of the embodiment of the present invention, a second hydraulic cylinder 4041 is arranged at the top of the eddy current unit 404. A second hydraulic rod 4042 is connected to the bottom of the second hydraulic cylinder 4041 in a matching manner. The bottom of the second hydraulic rod 4042 is connected to an impeller 4043 by bolts. The second hydraulic cylinder 4041 drives the impeller 4043 at the bottom of the second hydraulic rod 4042 to move up and down, which is beneficial to the waste gas introduced into the desulfurization tower 402 to roll. This is not only beneficial for the spraying unit 504 to more comprehensively desulfurize the waste gas in the desulfurization tower 402, but also beneficial for saving the time of waste gas desulfurization and further improving the working efficiency of the equipment for waste gas desulfurization.

[0037] Embodiment 5 On the basis of Embodiment 4, the liquid storage tank 502 has a cylindrical structure. A fourth support 501 is welded to the bottom of the liquid storage tank 502. A mixing unit 503 is arranged in the middle of the liquid storage tank 502. A motor 5031 is installed at the top of the mixing unit 503. The bottom of the motor 5031 is movably connected to a third hydraulic cylinder 5032 through a rotating shaft. A third hydraulic rod 5033 is connected to the bottom of the third hydraulic cylinder 5032 in a matching manner. A rotating rod 5034 is arranged at the bottom of the third hydraulic rod 5033. A number of blocking rods 5035 are welded to the rotating rod 5034 at equal intervals. Turning on the motor 5031 on the mixing unit 503 and the third hydraulic cylinder 5032 drives the rotating rod 5034 at the bottom of the third hydraulic rod 5033 to move up and down. The blocking rods 5035 on the rotating rod 5034 stir the desulfurization liquid in the liquid storage tank 502, ensuring that the concentration of the desulfurization liquid for waste gas desulfurization is more uniform and avoiding the accumulation of desulfurization agents and blockage of the spray heads 5044, thereby ensuring the stable and orderly desulfurization operation of the equipment for waste gas.

[0038] In an optional implementation of an embodiment of the present invention, a liquid outlet pipe 5041 is provided at one end of the spray unit 504, and one end of the liquid outlet pipe 5041 is connected to the liquid storage tank 502. A liquid inlet is provided on one side of the top of the outer wall of the liquid storage tank 502, and a third water pump 5042 is installed on the liquid outlet pipe 5041. Bend pipes 5043 are symmetrically provided on both sides of one end of the liquid outlet pipe 5041. A plurality of nozzles 5044 are evenly spaced at the bottom of the two bend pipes 5043. The bend pipes 5043 are provided on the inner side of the desulfurization tower 402. The third water pump 5042 on the spray unit 504 is turned on, and the third water pump 5042 moves the desulfurization liquid in the liquid storage tank 502 through the liquid outlet pipe 5041 to the two bend pipes. The several nozzles 5044 at the bottom of the pipe 5043 are conducive to the spraying unit 504 to spray the desulfurization liquid more evenly, so that the exhaust gas in the desulfurization tower 402 is fully in contact with the desulfurization liquid, ensuring that the exhaust gas desulfurization effect in the desulfurization tower 402 is better. A liquid extraction pipe 505 is arranged at the bottom of the liquid storage tank 502, and a fourth water pump 506 is installed on the liquid extraction pipe 505. The liquid extraction pipe 505 is connected to the bottom of the outer wall of the bottom of the desulfurization tower 402. By turning on the fourth water pump 506 on the liquid extraction pipe 505, the fourth water pump 506 draws the desulfurization liquid in the desulfurization tower 402 back to the liquid storage tank 502 for recycling, thereby reducing the consumption of desulfurizer, thereby reducing the economic cost of exhaust gas desulfurization.

[0039] Example 6 The desulfurization and dust removal method for coal-fired boiler exhaust gas emission control of the present invention has the following specific operating steps: When in use, first, exhaust gas is introduced into the water in the water tank 102 through the air delivery pipe 103, and dust in the exhaust gas falls to the bottom of the water tank 102 after being washed by water, and the first water pump 204 on the outlet pipe 203 and the second water pump 206 on the pumping pipe 205 are turned on to exchange heat and cold for the water in the water tank 102, so as to maintain the water temperature of the water tank 102, which not only avoids the dust reduction effect due to large fluctuations in water temperature and ensures the consistency of dust reduction efficiency, but also facilitates the recycling of water resources, improves the utilization rate of water resources, reduces the amount of water used, and avoids the situation of random discharge and placement of water resources, and cooperates with the first hydraulic cylinder 1051 to drive the scraper 1053 at one end of the first hydraulic rod 1052 to move, and the scraper 1053 removes the exhaust gas dust adhering to the bottom of the filter plate 104, which is conducive to the long-term dust filtering operation of the filter plate 104; Then, turn on the blower 301 on the conveying component 3. The blower 301 conveys the waste gas in the water tank 102 to the desulfurization tower 402 through the intake pipe 302 and the outlet pipe 303. Turn on the third water pump 5042 on the spraying unit 504. The third water pump 5042 moves the desulfurization liquid in the liquid storage tank 502 to a number of nozzles 5044 at the bottom of the two elbows 5043 through the liquid outlet pipe 5041, which is conducive to the spraying unit 504 spraying the desulfurization liquid more evenly, enabling the waste gas in the desulfurization tower 402 to come into full contact with the desulfurization liquid, ensuring a better desulfurization effect of the waste gas in the desulfurization tower 402. At the same time, in cooperation with the eddy current unit 404, the second hydraulic cylinder 4041 drives the impeller 4043 at the bottom of the second hydraulic rod 4042 to move up and down, which is conducive to the waste gas introduced into the desulfurization tower 402 to roll over. This not only facilitates the spraying unit 504 to more comprehensively desulfurize the waste gas in the desulfurization tower 402, but also helps save the time for waste gas desulfurization and improve the working efficiency of the equipment for waste gas desulfurization; Finally, turn on the fourth water pump 506 on the liquid extraction pipe 505. The fourth water pump 506 pumps back the desulfurization liquid in the desulfurization tower 402 to the liquid storage tank 502 for recycling, reducing the consumption of the desulfurization agent, thereby reducing the economic cost of waste gas desulfurization. And in cooperation with turning on the motor 5031 and the third hydraulic cylinder 5032 on the mixing unit 503 to drive the rotating rod 5034 at the bottom of the third hydraulic rod 5033 to move up and down, the blocking rod 5035 on the rotating rod 5034 stirs the desulfurization liquid in the liquid storage tank 502 to ensure the concentration of the desulfurization liquid and avoid the accumulation of the desulfurization agent and the blockage of the nozzles 5044, so as to ensure the stable and orderly desulfurization operation of the equipment for waste gas.

[0040] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. Desulfurization and dust removal equipment for coal-fired boiler exhaust gas emission treatment, characterized by: The invention comprises a dust reduction component (1), a conveying component (3), a desulfurization component (4) and a spray component (5) which are connected in sequence, wherein the dust reduction component (1) is connected to the water cooling component (2); the dust reduction component (1) comprises a water tank (102), one side of the water tank (102) is connected to an air supply pipe (103), and the other side is provided with an air outlet (106) in the middle, and the end of the air supply pipe (103) is arranged below the water level in the water tank; The conveying assembly (3) comprises an air inlet pipe (302) and an air outlet pipe (303) which are sequentially connected to the air outlet (106), and a fan (301) is installed between the air inlet pipe (302) and the air outlet pipe (303); the desulfurization assembly (4) comprises a desulfurization tower (402), a connecting pipe (403) is provided on the outer wall of the desulfurization tower (402), and the air outlet pipe (303) is connected to the connecting pipe (403); the spray assembly (5) comprises a liquid storage tank (502), and a spray unit (504) is provided on the top of the outer wall of the liquid storage tank (502).

2. The desulfurization and dust removal equipment for coal-fired boiler exhaust gas emission treatment according to claim 1 is characterized in that: A first bracket (101) is welded to the bottom of the water tank (102), a filter plate (104) is arranged in the middle of the water tank (102), a cleaning unit (105) is arranged below the filter plate (104), and a first valve is arranged at the bottom of the water tank (102).

3. The desulfurization and dust removal equipment for coal-fired boiler exhaust gas emission treatment according to claim 1 is characterized in that: A first hydraulic cylinder (1051) is provided at one end of the cleaning unit (105); the first hydraulic cylinder (1051) is connected to the outer wall of the water tank (102) via bolts; a first hydraulic rod (1052) is cooperatively connected to one end of the first hydraulic cylinder (1051); a scraper (1053) is connected to one end of the first hydraulic rod (1052) via bolts; the top of the scraper (1053) is in contact with the filter plate (104).

4. The desulfurization and dust removal equipment for treating exhaust gas from coal-fired boilers according to claim 2 is characterized in that: The water cooling assembly (2) is arranged on a side of the water tank (102) away from the gas transmission pipe (103), and the water cooling assembly (2) comprises a second bracket (201), a water storage tank (202) is welded on the top of the second bracket (201), a water outlet pipe (203) is connected to one side of the top of the water storage tank (202), a first water pump (204) is installed on the water outlet pipe (203), one end of the water outlet pipe (203) is connected to the water tank (102), a water pump (205) is connected to the bottom of the water storage tank (202) near the water tank (102), the water pump (205) is connected to the bottom of the water tank (102), a second water pump (206) is installed on the water pump (205), and a water inlet is opened on the top of the water storage tank (202).

5. The desulfurization and dust removal equipment for coal-fired boiler exhaust gas emission treatment according to claim 1 is characterized in that: A third bracket (401) is welded to the bottom of the desulfurization tower (402), a vortex unit (404) is arranged in the middle of the desulfurization tower (402), an air pump (405) is installed on the top of the desulfurization tower (402) close to the vortex unit (404), and a second valve is arranged at the bottom of the desulfurization tower (402).

6. The desulfurization and dust removal equipment for treating exhaust gas from coal-fired boilers according to claim 5 is characterized in that: The vortex unit (404) comprises a second hydraulic cylinder (4041), the bottom of the second hydraulic cylinder (4041) is cooperatively connected to a second hydraulic rod (4042), and the bottom of the second hydraulic rod (4042) is connected to an impeller (4043) via bolts.

7. The desulfurization and dust removal equipment for treating exhaust gas from coal-fired boilers according to claim 6 is characterized in that: A fourth bracket (501) is welded to the bottom of the liquid storage tank (502), a mixing unit (503) is arranged in the middle of the liquid storage tank (502), a motor (5031) is installed on the top of the mixing unit (503), a third hydraulic cylinder (5032) is movably connected to the bottom of the motor (5031) via a rotating shaft, a third hydraulic rod (5033) is cooperatively connected to the bottom of the third hydraulic cylinder (5032), a rotating rod (5034) is arranged at the bottom of the third hydraulic rod (5033), and a plurality of blocking rods (5035) are welded to the rotating rod (5034) at equal intervals.

8. The desulfurization and dust removal equipment for treating exhaust gas from coal-fired boilers according to claim 7 is characterized in that: The spraying unit (504) comprises a liquid outlet pipe (5041), one end of which is connected to a liquid storage tank (502), a liquid inlet is provided on one side of the top of an outer wall of the liquid storage tank (502), a third water pump (5042) is installed on the liquid outlet pipe (5041), curved pipes (5043) are symmetrically provided on both sides of one end of the liquid outlet pipe (5041), a plurality of nozzles (5044) are evenly spaced at the bottom of the two curved pipes (5043), the curved pipes (5043) are arranged inside the desulfurization tower (402), a liquid extraction pipe (505) is provided at the bottom of the liquid storage tank (502), a fourth water pump (506) is installed on the liquid extraction pipe (505), and the liquid extraction pipe (505) is connected to the bottom of the outer wall of the bottom of the desulfurization tower (402).

9. A desulfurization and dust removal method for treating exhaust gas from a coal-fired boiler, characterized in that: The desulfurization and dust removal equipment for treating exhaust gas from a coal-fired boiler according to any one of claims 1 to 8 is specifically as follows: The coal-fired boiler exhaust gas is transported to the dust reduction component through the gas pipeline for water-cooling and dust reduction; the transport component transports the exhaust gas after water-cooling and dust reduction to the desulfurization tower through the fan for desulfurization treatment.

10. The desulfurization and dust removal method for treating exhaust gas from a coal-fired boiler according to claim 9, characterized in that: The specific steps are as follows: Step 1: exhaust gas is introduced into the water in the water tank through the air delivery pipe (103), and dust in the exhaust gas falls into the bottom of the water tank (102) after being washed by water. The first water pump (204) on the water outlet pipe (203) and the second water pump (206) on the water pump pipe (205) are started in coordination to exchange heat and cold of the water in the water tank (102) to maintain the water temperature of the water tank (102). The first hydraulic cylinder (1051) is used to drive the scraper (1053) at one end of the first hydraulic rod (1052) to move, and the scraper (1053) removes the exhaust gas dust adhering to the bottom of the filter plate (104); Step 2: Turn on the fan (301) on the conveying component (3), and the fan (301) conveys the exhaust gas in the water tank (102) to the desulfurization tower (402) through the air inlet pipe (302) and the air outlet pipe (303). Turn on the third water pump (5042) on the spraying unit (504), and the third water pump (5042) moves the desulfurization liquid in the liquid storage tank (502) through the liquid outlet pipe (5041) to a plurality of nozzles (5044) at the bottom of the two curved pipes (5043), thereby desulfurizing the exhaust gas in the desulfurization tower (402). At the same time, the second hydraulic cylinder (4041) of the vortex unit (404) drives the impeller (4043) at the bottom of the second hydraulic rod (4042) to move up and down, so that the exhaust gas in the desulfurization tower (402) is fully in contact with the desulfurization liquid. Step 3: Turn on the fourth water pump (506) on the liquid extraction pipe (505). The fourth water pump (506) draws the desulfurization liquid in the desulfurization tower (402) back into the liquid storage tank (502) for recycling, and cooperates with the motor (5031) and the third hydraulic cylinder (5032) on the mixing unit (503) to drive the rotating rod (5034) at the bottom of the third hydraulic rod (5033) to move up and down. The stop rod (5035) on the rotating rod (5034) stirs the desulfurization liquid in the liquid storage tank (502) to ensure the concentration of the desulfurization liquid.

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