Flue gas purification system taking carbide slag as desulfurizing agent

Abstract

The invention relates to the technical field of flue gas purification, in particular to a flue gas purification system with carbide slag as a desulfurizer, which comprises a desulfurization cylinder, a gas inflow self-adjusting assembly is arranged in the middle of the inner side of the desulfurization cylinder, a spraying assembly is fixedly connected above the gas inflow self-adjusting assembly, a separation assembly is fixedly connected to the bottom of the inner side of the desulfurization cylinder, and the separation assembly is fixedly connected to the bottom of the inner side of the desulfurization cylinder. A cleaning assembly is arranged on the outer side of the separation assembly, the top of the desulfurization cylinder is communicated with an exhaust pipe, the cylinder wall of the desulfurization cylinder is communicated with four communicating pipes, one ends of the four communicating pipes are communicated through an annular pipe, and a mounting frame is integrally formed between the inner walls of the desulfurization cylinder. According to the improved flue gas purification system, the speed of the flue gas entering the desulfurization cylinder is adjusted in a self-adaptive mode through the gas inflow self-adjusting assembly, meanwhile, the gas inflow self-adjusting assembly can synchronously adjust the spraying amount, and under mutual cooperation, insufficient reaction caused by the too high flue gas entering speed can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas purification, in particular to a flue gas purification system using carbide slag as a desulfurizing agent. Background Art

[0002] Flue gas is a mixture of gas and smoke, and is the main cause of atmospheric pollution in residential areas. The composition of flue gas is very complex, including many pollutants. Sulfur dioxide is one of the most common pollutants in flue gas. Therefore, flue gas needs to be desulfurized before it is discharged. It is a flue gas purification method that mainly uses a desulfurizer to react and absorb sulfur dioxide in the flue gas to convert it into other chemical substances. The main component of carbide slag is calcium hydroxide, which can react with sulfur dioxide in flue gas and is often used as a desulfurizer in the flue gas purification process. Therefore, we have launched a flue gas purification system with carbide slag as a desulfurizer.

[0003] The existing patent (Announcement No.: CN102688683B) discloses an external oxidation desulfurization method and device using carbide slag as a desulfurizer, including an absorption tower, an oxidation tank and a pulping tank, wherein a stirrer and an oxidation air duct are provided in the oxidation tank; a vertical flue connected to the oxidation tank is provided above the oxidation tank; a flue gas inlet is provided at the lower part of the vertical flue, and a washing spray layer is provided at the upper part, and the washing spray layer is connected to the pulping tank through a pipeline with a pump; an inclined flue is provided in the middle of the vertical flue to connect with the absorption tower; the tower kettle of the absorption tower is connected to the pulping tank through a pipeline with a pump. The flue gas contacts the carbide slag-calcium sulfite slurry in the vertical flue in reverse direction, absorbs sulfur dioxide and heat in the flue gas to reduce the pH value of the slurry, and increases the temperature, and the sulfide in the slurry volatilizes into the flue gas in the form of H2S, and flows to the absorption tower with the flue gas, in which part of the H2S is absorbed by the carbide slag slurry in the absorption tower, and part is discharged with the flue gas. The invention ensures the oxidation rate of calcium sulfite slurry and improves the quality of gypsum. The prior art has the following problems: In the existing flue gas purification system, the flue gas rises directly from the absorption tower, and contacts with the calcium carbide slag slurry sprayed from the top of the absorption tower during the rising process, thereby reacting with the sulfur dioxide in the flue gas to achieve the purpose of purifying the flue gas. However, the flue gas inlet is connected to the boiler exhaust port, and the flue gas volume is affected by the boiler combustion efficiency and fuel sufficiency. If too much flue gas is discharged, the sulfur dioxide in the flue gas in the absorption tower cannot be completely reacted, and the flue gas in the boiler is not fully purified. Summary of the invention

[0004] The object of the present invention is to provide a flue gas purification system using carbide slag as a desulfurizing agent to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flue gas purification system using carbide slag as a desulfurizing agent, comprising a desulfurization cylinder, an air intake self-adjusting component is provided in the middle of the inner side of the desulfurization cylinder, a spray component is fixedly connected to the upper side of the air intake self-adjusting component, a separation component is fixedly connected to the inner bottom of the desulfurization cylinder, a cleaning component is provided on the outer side of the separation component, an exhaust pipe is connected to the top of the desulfurization cylinder, four connecting pipes are connected to the cylinder wall of the desulfurization cylinder, one ends of the four connecting pipes are connected to each other through an annular pipe, and a mounting frame is integrally formed between the inner walls of the desulfurization cylinder; The air intake self-adjusting component includes a main shaft rotatably connected to the middle part of the mounting frame, the top end of the main shaft is fixedly connected to a fan blade, the bottom end of the main shaft is fixedly connected to an impeller, two limit strips are integrally formed on the outer surface of the middle part of the main shaft, and a movable plate is slidably connected to the outer sides of the two limit strips, the top surface of the movable plate is rotatably connected to a connecting ring, the outer ring of the connecting ring is fixedly connected to four L-connecting rods, and the top ends of the four L-connecting rods are all integrally formed with sealing plates, the bottom ends of the two limit strips are fixedly connected to a hollow frame, the middle part of the top surface of the hollow frame is fixedly connected to a spring, the middle part of the hollow frame is slidably connected to a counterweight block, and the counterweight block is movably connected to the outer ring of the movable plate via an inclined connecting rod.

[0006] Preferably, a receiving chamber is provided in the cylinder wall of the contact portion between the desulfurization cylinder and the connecting pipe, an avoidance groove is provided below the side of the receiving chamber close to the inner wall of the desulfurization cylinder, and the sealing plate is slidably arranged inside the receiving chamber.

[0007] Preferably, the spray assembly includes a slurry box penetrated by the main shaft, the middle part of the bottom surface of the slurry box is rotatably connected to a pumping chamber, the outer circle of the pumping chamber is connected to a plurality of pumping channels, the bottom surface of the pumping channel is connected to a plurality of conical covers, and the bottom surface of the pumping chamber is integrally formed with two connecting pins.

[0008] Preferably, the two connecting pins pass through the middle of the top plate, and the two connecting pins are integrally formed with a limited position circular piece.

[0009] Preferably, the outer ring of the top plate is fixedly connected to a plurality of horizontal connecting rods, the top surfaces of the plurality of horizontal connecting rods are fixedly connected to a plurality of conical plugs, the bottom surface of the top plate is fixedly connected to two vertical connecting rods, a rotating ring is connected between the bottom ends of the two vertical connecting rods, the bottom surface of the rotating ring is rotatably connected to the top surface of the connecting ring, and the plurality of conical plugs correspond one-to-one to the plurality of conical covers.

[0010] Preferably, the separation assembly includes a separation shell fixedly connected to the inner bottom of the desulfurization cylinder, and the separation shell is composed of two conical shell bottom surfaces facing each other, wherein a filter port is provided on the surface of the upper conical shell, and the inner and outer spaces of the lower conical shell are respectively an impurity chamber and a slurry chamber.

[0011] Preferably, the top of the separation shell is fixedly connected to a water reservoir, an extension ring is integrally formed on the edge of the top surface of the water reservoir, and a sensor is fixedly connected to one side of the bottom surface of the extension ring, the sensor is electrically connected to the electric control valve, and the top surface of the extension ring is inclined toward the center of the water reservoir.

[0012] Preferably, a mounting seat is fixedly connected between the inner walls of the separation shell, a high-speed motor is fixedly connected to the middle of the top surface of the mounting seat, a centrifugal cone is fixedly connected to the output end of the high-speed motor, and the outer cone surface of the centrifugal cone is integrally formed with a spiral strip.

[0013] Preferably, the cleaning assembly includes a rotating drum fixedly connected to the outer ring of the hollow frame, two cleaning scrapers are fixedly connected to the bottom surface of the rotating drum, the bottom edge of the rotating drum is rollingly connected to the outer surface of the ball, the ball is rotatably connected to the inside of the bearing ring, and the outer ring of the bearing ring is fixedly connected to the inner wall of the desulfurization drum.

[0014] Preferably, a warehouse door is provided on one side of the bottom end of the desulfurization cylinder, a reflux pipe is connected to one side of the desulfurization cylinder, a reflux pump is provided in the middle of the reflux pipe, a demister is fixedly connected to the top of the inner wall of the desulfurization cylinder, the bottom end of the reflux pipe is placed in the slurry cavity, and the top end of the reflux pipe is placed inside the slurry box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the fan blades are driven to rotate by the rising smoke, and the rotation of the fan blades drives the sealing plate to move up and down to change the size of the air inlet of the connecting pipe, thereby affecting the air intake speed of the smoke. The greatest advantage of this structure is that it can automatically adjust the air intake speed according to the smoke intake speed. When the air intake is too fast, the fan blade rotation speed increases, and the sealing plate moves down to reduce the size of the air inlet, so that the air intake speed returns to its original state. Conversely, in the same way, the excessively fast smoke entry speed can be avoided to cause insufficient reaction. The air intake self-adjusting component can also drive the cleaning component to clean the filter port to prevent the filter port from being blocked.

[0016] In the present invention, the rotation of the fan blades can also drive the conical plug in the spray assembly to move up and down. Taking the case where the flue gas intake speed is too fast as an example, the flue gas volume in the desulfurization cylinder increases, and the fan blades rotate faster. Under the action of centrifugal force, the spring is compressed by the movable plate, and the movable plate drives the conical plug to move downward, thereby increasing the gap between the conical plug and the conical cover, and the spraying volume also increases accordingly. That is, the faster the intake speed, the greater the spraying volume in the desulfurization cylinder, thereby avoiding incomplete desulfurization.

[0017] In the present invention, the air intake self-adjusting component will also drive the impeller to rotate, and the rotation of the impeller can cause the slurry collected in the water reservoir to rotate to form a vortex, the rotation direction of the vortex is the same as the rotation direction of the spiral strip, when the electric control valve in the separation component is opened, the spiral slurry can enter the separation shell faster, and the slurry initially obtains a certain centrifugal force, which makes it convenient for the centrifugal cone to accelerate the centrifugation of the slurry faster, avoiding the situation where the centrifugal effect is poor due to insufficient centrifugal stroke.

[0018] In the present invention, when the flue gas is introduced through four connecting pipes, it will gather and collide together in the middle of the desulfurization cylinder. At this time, the flow velocity of the flue gas is reduced, so that the gravity acting on the impurities therein is greater than the force of the flue gas blowing, thereby separating the impurities in the flue gas from the flue gas and reducing the influence of the impurities on the desulfurization reaction during subsequent spraying.

[0019] In the present invention, the separation component is driven by a high-speed motor to separate impurities and precipitation from the slurry, so that the reflux pump can transport the filtered calcium carbide slag slurry to the spray component again for spraying to react with sulfur dioxide in the flue gas, thereby avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a front view cross-sectional three-dimensional structure of the present invention; Figure 3 For the present invention Figure 2 A is an enlarged structural diagram; Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention at a 45° angle section; Figure 5 It is a schematic diagram of a partial cross-sectional three-dimensional structure of a separation component of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the centrifugal cone in front view of the present invention; Figure 7 It is a schematic diagram of a partial three-dimensional structure of the air intake self-adjusting component of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram at B in FIG. Fig. 9 This is a schematic diagram of the front view of the three-dimensional structure of the spray assembly of the present invention; Fig.10 It is a schematic diagram of the explosion structure of the spray assembly of the present invention.

[0021] In the figure: 1. desulfurization cylinder; 2. air intake self-adjusting assembly; 201. sealing plate; 202. L connecting rod; 203. connecting ring; 204. movable plate; 205. limit strip; 206. main shaft; 207. hollow frame; 208. spring; 209. inclined connecting rod; 2010. counterweight; 2011. impeller; 2012. fan blade; 3. spray assembly; 301. slurry box; 302. pumping chamber; 303. pumping channel; 304. conical cover; 305. connecting pin; 306. top plate; 307. horizontal connecting rod; 308. conical plug; 309. vertical Connecting rod; 3010, rotating ring; 4, separation assembly; 401, separation housing; 402, filter port; 403, water reservoir; 404, sensor; 405, electric control valve; 406, mounting seat; 407, high-speed motor; 408, centrifugal cone; 409, spiral strip; 5, cleaning assembly; 501, rotating cylinder; 502, cleaning scraper; 503, ball bearing; 504, bearing ring; 6, exhaust pipe; 7, connecting pipe; 8, annular pipe; 9, compartment door; 10, reflux pipe; 11, reflux pump; 12, storage chamber; 13, avoidance groove; 14, demister; 15, mounting bracket. 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figures 1 to 10 The present invention provides a technical solution: a flue gas purification system using carbide slag as a desulfurizing agent, comprising a desulfurization cylinder 1, an air intake self-adjusting component 2 is provided in the middle of the inner side of the desulfurization cylinder 1, a spray component 3 is fixedly connected to the upper side of the air intake self-adjusting component 2, a separation component 4 is fixedly connected to the inner bottom of the desulfurization cylinder 1, a cleaning component 5 is provided on the outer side of the separation component 4, an exhaust pipe 6 is connected to the top of the desulfurization cylinder 1, four connecting pipes 7 are connected to the cylinder wall of the desulfurization cylinder 1, one ends of the four connecting pipes 7 are connected by an annular pipe 8, and a mounting frame 15 is integrally formed between the inner walls of the desulfurization cylinder 1.

[0024] In this embodiment, Figure 2 , Figure 4 and Figure 7As shown, the air intake self-adjusting component 2 includes a main shaft 206 rotatably connected to the middle of the mounting frame 15, the top of the main shaft 206 is fixedly connected to the fan blade 2012, the bottom of the main shaft 206 is fixedly connected to the impeller 2011, the middle outer surface of the main shaft 206 is integrally formed with two limit strips 205, the outer sides of the two limit strips 205 are slidably connected to the movable plate 204, the top surface of the movable plate 204 is rotatably connected to the connecting ring 203, the outer ring of the connecting ring 203 is fixedly connected to four L connecting rods 202, and the tops of the four L connecting rods 202 are all A sealing plate 201 is integrally formed, the bottom ends of the two limit strips 205 are fixedly connected to a hollow frame 207, the middle part of the top surface of the hollow frame 207 is fixedly connected to a spring 208, the middle part of the hollow frame 207 is slidably connected to a counterweight block 2010, and the counterweight block 2010 is movably connected to the outer ring of the movable plate 204 through an inclined connecting rod 209; when the flue gas enters the desulfurization cylinder 1, due to the high temperature of the flue gas, it will rise inside the desulfurization cylinder 1, and a large amount of rising flue gas will cause the fan blades 2012 to rotate, and the rotation of the fan blades 2012 passes through the main shaft 206 and The limit bar 205 drives the movable plate 204 and the hollow frame 207 to rotate. When the flue gas is introduced too quickly, the rising speed of the flue gas in the desulfurization tube 1 will also be accelerated, causing the rotation speed of the fan blade 2012 to increase. At this time, the rotation speed of the hollow frame 207 also increases accordingly, and the centrifugal force increases, causing the counterweight block 2010 to be thrown toward the outer ring of the hollow frame 207. At this time, the counterweight block 2010 drives the movable plate 204 to move down along the limit bar 205 through the inclined connecting rod 209. When the movable plate 204 moves down, it compresses the spring 208. When the movable plate 204 moves down, it passes through the connecting ring 2 03 drives the L connecting rod 202 to move downward, and the L connecting rod 202 drives the sealing plate 201 to move downward to block the exhaust pipe 6, thereby reducing the area of ​​the air inlet, thereby reducing the air intake speed and air intake volume. When the air intake speed is reduced, the rotation speed of the fan blade 2012 is reduced, and the spring 208 rebounds again to reset the sealing plate 201. This structure realizes automatic adjustment of the flue gas intake speed and air intake volume, avoiding the situation where the carbide slag slurry cannot completely react with the sulfur dioxide in the flue gas due to the excessively fast flue gas intake speed, thereby ensuring the flue gas purification effect.

[0025] In this embodiment, Figure 8 As shown, a storage chamber 12 is opened in the cylinder wall of the contact part of the desulfurization cylinder 1 and the connecting pipe 7, and an avoidance groove 13 is opened at the lower part of the storage chamber 12 close to the inner wall of the desulfurization cylinder 1, and a sealing plate 201 is slidably arranged inside the storage chamber 12; the internal dimension structure of the avoidance groove 13 is larger than the external dimension structure of the L connecting rod 202, and this structure enables the sealing plate 201 to move up and down in the storage chamber 12, thereby changing the adjustment of the sealing plate 201 on the size of the air inlet, so as to change the speed of the flue gas entering the desulfurization cylinder 1, and prevent the flue gas from being incompletely desulfurized due to excessive air intake, and failing to meet the emission standards.

[0026] In this embodiment, Figure 4 , Fig. 9 and Fig.10 As shown, the spray assembly 3 includes a slurry box 301 penetrated by the main shaft 206, the middle part of the bottom surface of the slurry box 301 is connected to a pumping chamber 302 by rotation, the outer ring of the pumping chamber 302 is connected to a plurality of pumping channels 303, the bottom surface of the pumping channel 303 is connected to a plurality of conical covers 304, and the bottom surface of the pumping chamber 302 is integrally formed with two connecting pins 305; the pumping chamber 302 mainly pumps the slurry flowing from the slurry box 301 into the pumping chamber 302 through the internal slurry pump. The liquid is transported to the surrounding pumping channels 303 and finally sprayed out from the conical cover 304 on the bottom of the pumping channel 303 to realize the spraying of carbide slag slurry. The purpose of desulfurization is achieved by utilizing the reaction between the carbide slag slurry and the sulfur dioxide in the flue gas. The slurry box 301 is rotatably connected to the main shaft 206. The slurry box 301 does not rotate with the main shaft 206, but the bottom plate of the pumping chamber 302 is fixedly connected to the main shaft 206, that is, the pumping chamber 302 can rotate with the main shaft 206.

[0027] In this embodiment, Fig.10 As shown, two connecting pins 305 pass through the middle of the top plate 306, and the two connecting pins 305 are integrally formed with a limiting disc; the limiting disc can prevent the top plate 306 from falling off from between the pumping chamber 302 and the limiting disc. At the same time, the connecting pin 305 can drive the top plate 306 to rotate with the pumping chamber 302. It should be noted that there is a margin between the limiting disc on the bottom surface of the connecting pin 305 and the fixed top plate 306, so as to leave space for the top plate 306 to move up and down.

[0028] In this embodiment, Fig. 9 and Fig.10As shown, the outer ring of the top plate 306 is fixedly connected with a plurality of horizontal connecting rods 307, the top surfaces of the plurality of horizontal connecting rods 307 are fixedly connected with a plurality of conical plugs 308, the bottom surface of the top plate 306 is fixedly connected with two vertical connecting rods 309, a rotating ring 3010 is connected between the bottom ends of the two vertical connecting rods 309, the bottom surface of the rotating ring 3010 is rotatably connected with the top surface of the connecting ring 203, and the plurality of conical plugs 308 correspond to the plurality of conical covers 304 one by one; because the top plate 306 rotates with the pumping chamber 302, the top plate 306 can drive the conical plugs 308 to rotate synchronously with the pumping chamber 302, and always keep the conical plugs 308 below the corresponding conical covers 304, and the conical plugs The distance between 308 and the inner wall of the conical cover 304 affects the amount of spraying. When the flue gas intake is too fast, the rotation speed of the fan blade 2012 increases and eventually the movable plate 204 moves downward. The downward movement of the movable plate 204 will drive the rotating ring 3010 to move downward through the connecting ring 203. The downward movement of the rotating ring 3010 drives the top plate 306 to move downward through the vertical connecting rod 309. The top plate 306 will drive the conical plug 308 to move downward through the horizontal connecting rod 307, so that the distance between the conical plug 308 and the conical cover 304 increases, and the spraying amount also increases accordingly. This structure can increase the spraying amount when the flue gas intake volume increases, react to the sulfur dioxide in the flue gas, and prevent incomplete flue gas desulfurization when the flue gas increases.

[0029] In this embodiment, Figure 5 and Figure 6 As shown, the separation component 4 includes a separation shell 401 fixedly connected to the inner bottom of the desulfurization cylinder 1, and the separation shell 401 is composed of two conical shell bottom surfaces facing each other, wherein a filter port 402 is opened on the surface of the upper conical shell, and the inner and outer spaces of the lower conical shell are respectively an impurity chamber and a slurry chamber, a warehouse door 9 is provided on one side of the bottom end of the desulfurization cylinder 1, a reflux pipe 10 is connected to one side of the desulfurization cylinder 1, a reflux pump 11 is provided in the middle of the reflux pipe 10, a demister 14 is fixedly connected to the top of the inner wall of the desulfurization cylinder 1, the bottom end of the reflux pipe 10 is placed in the slurry chamber, and the top end of the reflux pipe 10 is placed in the slurry box 301; under the action of the reflux pump 11, the calcium carbide slag slurry in the slurry chamber can be re-transported to the slurry box 301 for circulation reaction.

[0030] In this embodiment, Figure 5As shown, the top of the separation shell 401 is fixedly connected to a water reservoir 403, an extension ring is integrally formed on the edge of the top surface of the water reservoir 403, and a sensor 404 is fixedly connected to one side of the bottom surface of the extension ring, the sensor 404 is electrically connected to the electric control valve 405, and the top surface of the extension ring is inclined toward the center of the water reservoir 403; the water reservoir 403 can collect the carbide slag slurry sprayed from the desulfurization cylinder 1, and the inclined structure of the top surface of the extension ring is conducive to guiding the carbide slag slurry into the water reservoir 403. Under normal conditions, the electric control valve 405 is in a closed state. As the carbide slag slurry in the water reservoir 403 slowly accumulates, the liquid level of the carbide slag slurry will contact the sensor 404. At this time, the sensor 404 generates an electrical signal to the electric control valve 405 to open the electric control valve 405, and the carbide slag slurry is discharged into the interior of the separation shell 401 for filtration.

[0031] In this embodiment, Figure 6 As shown, a mounting seat 406 is fixedly connected between the inner walls of the separation shell 401, a high-speed motor 407 is fixedly connected to the middle of the top surface of the mounting seat 406, a centrifugal cone 408 is fixedly connected to the output end of the high-speed motor 407, and a spiral strip 409 is integrally formed on the outer cone surface of the centrifugal cone 408; the high-speed motor 407 drives the centrifugal cone 408 and the spiral strip 409 to rotate, and when the electric control valve 405 is opened, the calcium carbide slag slurry will enter between the separation shell 401 and the centrifugal cone 408, and under the action of the centrifugal field, the liquid phase of the slurry passes through the separation The solid particles are separated from the filter port 402 on the separation shell 401, and are retained in the separation shell 401. At the same time, the solid particles move from the small end to the large end of the separation shell 401 under the action of centrifugal force and the differential speed between the spiral strip 409 and the separation shell 401. During this movement, due to the increase in the rotation diameter, the centrifugal force increases rapidly, and finally the solid phase is separated from the liquid phase, thereby achieving the purpose of solid-liquid phase separation, so that the filtered calcium carbide slag slurry can be re-pumped into the slurry tank 301 for circulation spraying.

[0032] In this embodiment, Figure 2 and Figure 7As shown, the cleaning assembly 5 includes a rotating cylinder 501 fixedly connected to the outer ring of the hollow frame 207, two cleaning scrapers 502 are fixedly connected to the bottom surface of the rotating cylinder 501, the bottom edge of the rotating cylinder 501 is rollingly connected to the outer surface of the ball 503, the ball 503 is rotatably connected to the inside of the bearing ring 504, and the outer ring of the bearing ring 504 is fixedly connected to the inner wall of the desulfurization cylinder 1; when the hollow frame 207 rotates under the drive of the fan blade 2012, it will drive the rotating cylinder 501 to rotate synchronously, and the rotation of the rotating cylinder 501 will drive the cleaning scraper The plate 502 cleans the filter port 402 of the separation shell 401. Since the cleaning scraper 502 is arranged on the outside of the separation shell 401, the solid impurities stuck inside the filter port 402 can be cleaned into the separation shell 401 during cleaning, avoiding the impurities being cleaned to the outside of the separation shell 401 and mixing with the calcium carbide slag slurry again. The support ring 504 and the ball 503 cooperate to support the rotating cylinder 501, while reducing the friction at the bottom of the rotating cylinder 501, making it easier for the rotating cylinder 501 to rotate.

[0033] The use method and advantages of the present invention: When the flue gas purification system using carbide slag as a desulfurizing agent is used, the working process is as follows: First, connect the exhaust pipe of the external boiler with the smoke inlet pipe of the annular pipe 8, and the flue gas finally enters the desulfurization tube 1 from the connecting pipe 7. Since there are four connecting pipes 7, which are equiangularly distributed around the desulfurization tube 1, when the flue gas enters the desulfurization tube 1, the flue gas will collide with each other, and the flow rate of the flue gas will decrease. Some of the heavier impurities will fall down due to gravity and separate from the flue gas, reducing the impact of impurities on desulfurization during the desulfurization process. After the flue gas enters the desulfurization tube 1, its temperature will rise due to its high temperature, and a large amount of rising flue gas will drive the fan blades. 2012 rotates, and the fan blades 2012 will drive the entire air intake self-adjusting component 2 to operate, so as to achieve the purpose of automatically adjusting the air intake, and prevent the flue gas entering the desulfurization cylinder 1 too quickly and too much to completely react with the calcium carbide slag slurry, resulting in the desulfurization effect not meeting the standard. While the air intake self-adjusting component 2 is running, it will also drive the conical plug 308 in the spray component 3 to move up and down, and the automatic adjustment of the spray volume cooperates with the air intake self-adjusting component 2. When the flue gas intake volume is large, the spray volume also increases, and vice versa. When the air intake is small, the spraying amount is also reduced. In addition, when the air intake self-adjusting component 2 is running, the impeller 2011 and the cleaning component 5 are synchronously driven to run. The cleaning scraper 502 in the cleaning component 5 cleans the impurities in the filter port 402, and the impeller 2011 can make the slurry collected in the water reservoir 403 rotate to form a vortex. The rotation direction of the vortex is the same as that of the spiral strip 409. When the electric control valve 405 in the separation component 4 is opened, the spiral slurry can enter the separation housing 40 faster. 1, and the slurry initially obtains a certain centrifugal force, which facilitates the centrifugal cone 408 to accelerate the centrifugation of the slurry faster, avoiding the situation where the centrifugal effect is poor due to insufficient centrifugal stroke. The impurities centrifuged also include the precipitation in the slurry. Because the main component of the calcium carbide slag slurry is calcium hydroxide, when sulfur dioxide and calcium hydroxide react, calcium sulfite precipitation and water will be produced. The separated slurry will be pumped from the reflux pipe 10 to the slurry tank 301 under the action of the reflux pump 11 for re-circulation and spraying, avoiding waste.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A flue gas purification system using carbide slag as a desulfurizing agent, comprising a desulfurizing cylinder (1), characterized in that: An air intake self-adjusting assembly (2) is provided at the middle of the inner side of the desulfurization cylinder (1), a spray assembly (3) is fixedly connected to the upper side of the air intake self-adjusting assembly (2), a separation assembly (4) is fixedly connected to the inner bottom of the desulfurization cylinder (1), a cleaning assembly (5) is provided on the outer side of the separation assembly (4), an exhaust pipe (6) is connected to the top of the desulfurization cylinder (1), four connecting pipes (7) are connected to the cylinder wall of the desulfurization cylinder (1), one ends of the four connecting pipes (7) are connected to each other via an annular pipe (8), and a mounting frame (15) is integrally formed between the inner walls of the desulfurization cylinder (1); The air intake self-adjusting component (2) comprises a main shaft (206) rotatably connected to the middle part of the mounting frame (15), a fan blade (212) is fixedly connected to the top end of the main shaft (206), an impeller (211) is fixedly connected to the bottom end of the main shaft (206), two limit strips (205) are integrally formed on the outer surface of the middle part of the main shaft (206), a movable plate (204) is slidably connected to the outer sides of the two limit strips (205), a connecting ring (203) is rotatably connected to the top surface of the movable plate (204), and the connecting ring The outer ring of (203) is fixedly connected to four L-connecting rods (202), the top ends of the four L-connecting rods (202) are all integrally formed with sealing plates (201), the bottom ends of the two limit strips (205) are fixedly connected to a hollow frame (207), the middle part of the top surface of the hollow frame (207) is fixedly connected to a spring (208), the middle part of the hollow frame (207) is slidably connected to a counterweight block (2010), and the counterweight block (2010) is movably connected to the outer ring of the movable plate (204) via an inclined connecting rod (209).

2. A flue gas purification system using carbide slag as a desulfurizing agent according to claim 1, characterized in that: A receiving chamber (12) is provided in the wall of the desulfurization cylinder (1) at the contact portion with the connecting pipe (7), an avoidance groove (13) is provided below the receiving chamber (12) on one side close to the inner wall of the desulfurization cylinder (1), and the sealing plate (201) is slidably arranged inside the receiving chamber (12).

3. A flue gas purification system using carbide slag as a desulfurizing agent according to claim 1, characterized in that: The spray assembly (3) comprises a slurry box (301) penetrated by a main shaft (206); the middle part of the bottom surface of the slurry box (301) is rotatably connected to a pumping chamber (302); the outer ring of the pumping chamber (302) is connected to a plurality of pumping channels (303); the bottom surface of the pumping channel (303) is connected to a plurality of conical covers (304); and the bottom surface of the pumping chamber (302) is integrally formed with two connecting pins (305).

4. A flue gas purification system using carbide slag as a desulfurizing agent according to claim 3, characterized in that: The two connecting pins (305) penetrate the middle of the top plate (306), and the two connecting pins (305) are integrally formed with a limited position circular piece.

5. A flue gas purification system using carbide slag as a desulfurizing agent according to claim 4, characterized in that: The outer ring of the top plate (306) is fixedly connected to a plurality of horizontal connecting rods (307), the top surfaces of the plurality of horizontal connecting rods (307) are fixedly connected to a plurality of conical plugs (308), the bottom surface of the top plate (306) is fixedly connected to two vertical connecting rods (309), a rotating ring (3010) is connected between the bottom ends of the two vertical connecting rods (309), the bottom surface of the rotating ring (3010) is rotatably connected to the top surface of the connecting ring (203), and the plurality of conical plugs (308) correspond one to one to the plurality of conical covers (304).

6. A flue gas purification system using carbide slag as a desulfurizing agent according to claim 1, characterized in that: The separation assembly (4) comprises a separation shell (401) fixedly connected to the inner bottom of the desulfurization cylinder (1), wherein the separation shell (401) is composed of two conical shell bottom surfaces facing each other, wherein a filter port (402) is provided on the surface of the upper conical shell, and the inner and outer spaces of the lower conical shell are respectively an impurity chamber and a slurry chamber.

7. A flue gas purification system using carbide slag as a desulfurizing agent according to claim 6, characterized in that: The top of the separation housing (401) is fixedly connected to a water reservoir (403); an extension ring is integrally formed on the edge of the top surface of the water reservoir (403); and a sensor (404) is fixedly connected to one side of the bottom surface of the extension ring; the sensor (404) is electrically connected to the electric control valve (405); and the top surface of the extension ring is inclined toward the center of the water reservoir (403).

8. A flue gas purification system using carbide slag as a desulfurizing agent according to claim 6, characterized in that: A mounting seat (406) is fixedly connected between the inner walls of the separation housing (401), a high-speed motor (407) is fixedly connected to the middle of the top surface of the mounting seat (406), a centrifugal cone (408) is fixedly connected to the output end of the high-speed motor (407), and a spiral strip (409) is integrally formed on the outer cone surface of the centrifugal cone (408).

9. A flue gas purification system using carbide slag as a desulfurizing agent according to claim 1, characterized in that: The cleaning assembly (5) comprises a rotating cylinder (501) fixedly connected to the outer ring of the hollow frame (207); two cleaning scrapers (502) are fixedly connected to the bottom surface of the rotating cylinder (501); the bottom edge of the rotating cylinder (501) is rollingly connected to the outer surface of a ball (503); the ball (503) is rotatably connected to the inside of a bearing ring (504); and the outer ring of the bearing ring (504) is fixedly connected to the inner wall of the desulfurization cylinder (1).

10. A flue gas purification system using carbide slag as a desulfurizing agent according to claim 1, characterized in that: A door (9) is provided on one side of the bottom end of the desulfurization cylinder (1), a reflux pipe (10) is connected to one side of the desulfurization cylinder (1), a reflux pump (11) is provided in the middle of the reflux pipe (10), a demister (14) is fixedly connected to the top end of the inner wall of the desulfurization cylinder (1), the bottom end of the reflux pipe (10) is placed in the slurry cavity, and the top end of the reflux pipe (10) is placed inside the slurry box (301).

Images