Dry desulfurization flue gas emission device

Abstract

The application discloses a dry desulfurization flue gas emission device, which sprays powder-shaped solid absorbent to form a particle mist, and then collides with the gas which needs to be desulfurized, so that the contact area and time of the gas and the solid absorbent are greatly increased, and the desulfurization efficiency and the utilization rate of the solid absorbent are effectively improved. In addition, the powder falls on the arc cover to further contact and react with the airflow, and the utilization rate of the solid absorbent is improved again. In addition, the atomized contact can effectively reduce the probability of scaling. The application can utilize a vibration motor to vibrate the filter, and then input the airflow from the back-blowing air supply pipe to drive the back-blowing impeller to rotate, so that the back-blowing head is driven to rotate and back-blow the filter through hole, and solid sundries adsorbed on the filter are cleaned. Meanwhile, the air supply pipe can be supplied with the airflow to drive the inner arc strip and the outer arc strip to rotate along the arc cover and to blow and clean the arc cover, so that the arc cover is dredged.

Description

Technical Field

[0001] This invention relates to desulfurization equipment, and in particular to a dry desulfurization flue gas emission device. Background Technology

[0002] Dry desulfurization utilizes solid adsorbents or solid reactants to remove sulfides from gases. The main advantages of this method are simple equipment, small footprint, low investment and operating costs, ease of operation, low energy consumption, easy disposal of byproducts, and no need for a wastewater treatment system. However, its disadvantages include slow reaction speed, low desulfurization rate (generally between 60% and 80%), low absorbent utilization, significant wear and scaling, low equipment stability and reliability, and a short lifespan.

[0003] Research revealed that most existing dry desulfurization methods use large-particle or blocky solid adsorbents to react with sulfur-containing gas streams, which obviously results in low desulfurization efficiency and low adsorbent utilization. Furthermore, the lack of timely treatment of agglomerated and scaled reactants during the reaction process leads to severe wear and scaling, directly impacting equipment stability, reliability, and lifespan.

[0004] Therefore, if the above problems can be solved, then dry desulfurization is a relatively ideal desulfurization equipment with huge market potential and technological advancements. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a dry desulfurization flue gas emission device, which makes the solid adsorbent into fine powder and then uses a powder spraying method to greatly increase the contact area and contact time between the solid adsorbent and the airflow, thereby greatly improving the reaction rate and reducing the low utilization rate of the adsorbent.

[0006] To achieve the above objectives, the present invention provides a dry desulfurization flue gas emission device, including an outer cylinder and a spray shell. The spray shell is installed on the outer cylinder, and a third spray shell plate is installed inside the spray shell. The third spray shell plate is assembled with a spray unit, and one end of the spray sleeve of the spray unit is connected to the hopper cavity of the spray shell.

[0007] The filter element is provided with a filter support block, a vibrating seat, a vibrating rod, and a filter through hole. The two ends of the filter support block are connected to the vibrating seat and the filter element, respectively. A vibration motor is installed on the vibrating seat.

[0008] A spring ring is installed on the vibrating rod, and the spring ring is inserted into the vibrating sleeve cavity. The vibrating sleeve cavity is set inside the vibrating sleeve. A vibrating spring is fitted on the part of the vibrating rod between the spring ring and the inner end face of the vibrating sleeve cavity. The filter through hole penetrates the filter element, and the filter element, the inner wall of the spray shell, and the third spray shell plate form an exhaust cavity.

[0009] An impeller housing and an impeller are installed inside the exhaust chamber. The impeller housing is mounted on the third spray shell plate. The inside of the impeller housing is an impeller housing cavity, and the impeller is installed inside the impeller housing cavity. The impeller is fitted onto the outside of the third spray shell plate frame. The impeller connecting part of the impeller passes through the impeller housing and is assembled with the back-blowing head. The back-blowing head has a hollow back-blowing cavity inside, and a through back-blowing hole is provided on one end of the back-blowing head facing the filter element where the filter through hole is provided. The back-blowing cavity is connected to the impeller housing cavity through a connecting cavity, which is located on the impeller.

[0010] An impeller housing and a back-blowing impeller are installed inside the exhaust chamber. The impeller housing is mounted on the third spray shell plate. The inside of the impeller housing is an impeller housing cavity. The back-blowing impeller is installed inside the impeller housing cavity and is fitted onto the outside of the third spray shell plate frame. The connecting part of the back-blowing impeller passes through the impeller housing and is assembled with the back-blowing head. The inside of the back-blowing head is a hollow back-blowing cavity. A through back-blowing hole is provided on one end of the back-blowing head facing the filter element where the filter through hole is provided. The back-blowing cavity is connected to the impeller housing cavity through a connecting cavity. The connecting cavity is provided on the back-blowing impeller.

[0011] The impeller housing cavity is connected to the backflush air supply cavity through the backflush connecting hole. The backflush air supply cavity is set inside the backflush air supply housing. The backflush air supply housing is installed on the spray housing. The backflush connecting hole is set on the spray housing and penetrates the spray housing. The backflush air supply cavity is connected to one end of the backflush air supply pipe. The backflush air supply pipe is installed on the backflush air supply housing.

[0012] An arc-shaped shroud is installed inside the outer cylinder cavity. The gas entering the outer cylinder cavity passes through the arc-shaped shroud and moves toward the spraying unit. The spraying unit outputs powder that reacts with the gas and outputs airflow.

[0013] As a further improvement of the present invention, a hopper is installed on the spray shell, the inside of the hopper is a hollow hopper cavity, a scraper is installed in the hopper cavity, the scraper is equipped with a stirring sleeve, a connecting rod and a scraper, a stirring blade is installed on the outer wall of the stirring sleeve, a stirring shaft is fitted on the stirring sleeve and the stirring shaft is assembled with the hopper; a scraper motor is installed on the hopper, and the output shaft of the scraper motor is assembled with the stirring shaft.

[0014] As a further improvement of the present invention, one end of the spray sleeve passes through the third spray shell plate frame and the sealing membrane and communicates with the outer cylinder cavity. The third spray shell plate frame is installed on the third spray shell plate. The sealing membrane is elastic and is installed on the filter element. The spray sleeve and the sealing membrane are assembled and fixed.

[0015] As a further improvement of the present invention, an exhaust through hole is provided at the corresponding position of the spray shell and the exhaust chamber. The exhaust through hole is connected to the manifold, which is located inside the manifold shell. The manifold shell is installed outside the spray shell. An exhaust pipe is installed on the manifold shell. One end of the exhaust pipe is connected to the inlet of the air pump through a three-way connector, and the other end is connected to the secondary treatment device or the atmosphere.

[0016] As a further improvement of the present invention, the spraying unit is equipped with a spraying motor, a feeding pipe, and a screw rod. The output shaft of the spraying motor is assembled and fixed to the screw rod. The screw rod is installed inside the feeding pipe and a screw blade is installed and fixed on the screw rod. The screw rod has a through air blowing channel inside. The two ends of the screw rod are respectively provided with a first rod hole and a second rod hole. The first rod hole and the second rod hole are respectively connected to the two ends of the air blowing channel to introduce pressurized airflow. The airflow passes through the second rod hole and the air blowing channel to disperse the powdered solid adsorbent into particulate mist.

[0017] As a further improvement of the present invention, the spraying unit includes a spraying base, a spraying sleeve, a feeding pipe, and an air supply base. The spraying base is installed on the first spraying shell plate. The spraying base is provided with a frustum hole, a spraying insertion hole, a spraying ring groove, a spraying air inlet head, and a fixed contact. One end of the spraying air inlet head is connected to the spraying ring groove, and the other end is connected to the pressurized airflow that needs to be desulfurized. One end of the spraying insertion hole is connected to the spraying ring groove, and the other end passes through the spraying base.

[0018] The spraying insertion hole is connected to one end of the spraying tube, and the other end of the spraying tube is inserted into one end of the spraying air passage. The other end of the spraying air passage passes through the spraying sleeve. The spraying sleeve is fitted outside the air supply base. An air supply ring groove is provided on the outer wall of the air supply base. The air supply ring groove is connected to one end of the air supply channel. The other end of the air supply channel is connected to the first rod hole of the screw rod. The air supply base and the spraying sleeve are matched.

[0019] The screw rod has a through air blowing channel inside. The two ends of the screw rod are respectively provided with a first rod hole and a second rod hole. The first rod hole and the second rod hole are respectively connected to the two ends of the air blowing channel, so that the airflow in the air supply channel enters the first rod hole and then exits from the second rod hole and the end of the air blowing channel away from the air supply seat.

[0020] As a further improvement of the present invention, the air supply base is equipped with a wire and a moving contact. One end of the wire is electrically connected to the power terminal of the feeding motor, and the other end is electrically connected to the moving contact. The moving contact is in contact with the stationary contact and conducts electricity. The stationary contact is connected to the power supply to supply power to the feeding motor.

[0021] The air supply base is assembled and fixed to one end of the feed pipe. The feed pipe passes through the frustum hole, and the spray tube is sealed and plugged into the spray hole. The moving contact and the stationary contact are in contact and conducting electricity. The feed motor is installed and fixed on the air supply base. The output shaft of the feed motor is assembled and fixed to the screw rod. The screw rod has a screw blade installed and fixed on its outer wall. The screw blade is installed in the feed tube cavity of the feed pipe. The end of the feed pipe away from the air supply base passes through the second spray shell plate and the third spray shell plate respectively.

[0022] As a further improvement of the present invention, an arc-shaped cover, a first inclined plate, an air blowing hole ring, and a second inclined plate are installed in the outer cylinder cavity in sequence from top to bottom. The arc-shaped cover is provided with several through arc-shaped cover holes, and the inner side of the arc-shaped cover is an arc-shaped cover cavity. The air blowing hole ring is installed below the arc-shaped cover and is provided with several through holes. An air blowing cavity is formed between the air blowing hole ring and the inner wall of the outer cylinder. The air blowing cavity is connected to one end of the input pipe, and the input pipe inputs the airflow to be processed. The airflow input into the air blowing cavity through the input pipe enters the arc-shaped cover cavity after being evenly distributed by the air blowing hole ring, and then passes through the arc-shaped cover holes and reacts with the powder. After the reaction is completed, it falls onto the arc-shaped cover and the first inclined plate.

[0023] Output units are installed at the lowest points of the first inclined plate and the second inclined plate, respectively. Each output unit includes an output tube, an output blade is installed inside the output tube, the output blade is mounted on a spiral shaft, the spiral shaft is assembled with the output tube, the spiral shaft is assembled with the output shaft of the output motor, and the output motor is mounted on the output tube.

[0024] As a further improvement of the present invention, an installation plate is installed inside the outer cylinder, and a purge shell is installed on the installation plate. The purge shell has a hollow purge cavity inside, and a purge impeller is installed inside the purge cavity. The purge impeller is installed on one end of the purge pipe, and the other end of the purge pipe passes through the arc-shaped cover and is assembled with the arc-shaped cover. Inner arc strips and outer arc strips are respectively installed on the inner and outer sides of the purge pipe located on the arc-shaped cover. A through purge pipe hole is provided on the part of the purge pipe located in the purge cavity. The purge pipe hole connects the purge cavity and the purge pipe cavity. The purge pipe cavity is located inside the purge pipe and is connected to one end of the purge air pipe.

[0025] The inner arc strip has a hollow inner arc strip cavity inside. A through inner arc strip hole is provided on the side of the inner arc strip facing the arc-shaped cover. The inner arc strip hole is connected to the inner arc strip cavity, and the inner arc strip cavity is connected to the purge tube cavity of the purge tube. The outer arc strip has a hollow outer arc strip cavity inside. A through outer arc strip hole is provided on the side of the outer arc strip facing the arc-shaped cover. The outer arc strip hole is connected to the outer arc strip cavity, and the outer arc strip cavity is connected to the purge tube cavity of the purge tube.

[0026] As a further improvement of the present invention, it also includes an air supply module, which includes a slide shaft, a lever, an air valve, a push head, and an air bag. One end of the slide shaft passes through a slide shaft plate and is assembled with a push ring. The slide shaft plate is mounted on the frame. A first spring is fitted on the portion of the slide shaft located between the push ring and the slide shaft plate.

[0027] The push ring is close to one end of the lever, the lever is hinged to the frame by a pin, the other end of the lever is close to the push head, the push head is mounted on the push sleeve, the push sleeve is set on the air bag, the push sleeve and the air bag have elasticity, the push sleeve passes through the partition and is assembled with the push head, the push head and the partition are respectively assembled with the two ends of the second spring, and the partition is mounted on the frame;

[0028] The input tube is connected to one end of the intermediate tube, and the other end of the intermediate tube is connected to one end of the access tube. The access tube is used to input the airflow to be processed. An airbag is installed inside the intermediate tube. The airflow passes through the middle of the airbag and then enters the input tube.

[0029] The frame is also equipped with a micro switch. The micro switch is not triggered in the initial state, but it will be triggered after the pusher head moves down. After the micro switch is triggered, it inputs a signal to the industrial control computer.

[0030] The lever and the sliding shaft are respectively attached to the end of the valve stem. The valve stem is installed in the valve cavity of the air valve and assembled with the valve core. The valve core is sealed and slidably installed in the valve cavity. The valve core is provided with a valve core annular groove. A third spring is installed in the valve cavity and between the valve core and the inner end face of the valve cavity. The third spring applies a spring force to the valve core to push the valve stem, so as to maintain the valve core annular groove and the two valve tubes misaligned in the initial state. Both valve tubes are installed on the air valve and are connected to the valve cavity.

[0031] One valve pipe is connected to the high-pressure air pipe, and the other valve pipe is connected to the backflush air supply pipe and the purge air pipe respectively. The high-pressure air pipe contains high-pressure airflow, and the air valve is installed on the valve seat frame.

[0032] When the arc-shaped cover and / or filter is blocked, the air pressure input at one end of the inlet pipe will increase. The air pressure squeezes the airbag, causing it to press against the middle pipe, which in turn pushes the push sleeve to overcome the elastic force of the second spring and stretches to drive the push head to move towards the lever, thereby triggering the micro switch. If the air pressure continues to increase, it will drive the push head to continue pushing the lever to move, which will continue to push the lever to rotate. The lever squeezes the valve stem to move until the valve core annular groove is connected to the two valve pipes. At this time, the high-pressure airflow enters the backflush supply pipe and the purge air pipe respectively.

[0033] The beneficial effects of this invention are:

[0034] This invention employs a powder spraying unit to blow out powdered solid adsorbent to form a fine mist, which then collides with the gas requiring desulfurization. This significantly increases the contact area and duration between the gas and the solid adsorbent, thereby effectively improving desulfurization efficiency and the utilization rate of the solid adsorbent. Furthermore, the powder, after falling, lands on an arc-shaped shroud, further reacting with the airflow and further enhancing the utilization rate of the solid adsorbent. Additionally, this atomized contact effectively reduces the probability of scaling.

[0035] This invention utilizes a vibration motor to vibrate the filter element, and then inputs airflow from the backflushing air supply pipe to drive the backflushing impeller to rotate, thereby rotating the backflushing head to backflush the filter holes and clean solid debris adsorbed on the filter element. Simultaneously, air can be supplied to the purging air pipe to drive the inner and outer arc strips to rotate and purge along the arc-shaped cover, thus better cleaning and unblocking the arc-shaped cover.

[0036] In addition, the present invention can utilize the blockage on one side of the outer cylinder cavity to cause the air pressure at the airbag to rise, and then push the push head to trigger the micro switch by pushing the push sleeve or use the lever to input high-pressure airflow to purge the air pipe and backflush the air supply pipe to clear the blockage. This design has high reliability, simple structure and can ensure the stable operation of the equipment.

[0037] This invention improves desulfurization efficiency to over 90% by using atomized spraying material, increases solid adsorbent utilization by 40%, reduces scaling rate by 60%, and achieves unblocking response time of ≤5 seconds. Attached Figure Description

[0038] Figures 1-3 This is a schematic diagram of the structure of the present invention;

[0039] Figure 4 This is a cross-sectional view of the invention located at the center plane of the outer cylinder 130 axis;

[0040] Figure 5 yes Figure 4 Enlarged view at F1;

[0041] Figure 6 This is a cross-sectional view of the invention located on another central plane where the axis of the outer cylinder 130 is located;

[0042] Figure 7 yes Figure 6 Enlarged view at F2 in the middle;

[0043] Figure 8 yes Figure 6 Enlarged view at F3;

[0044] Figure 9 This is a partial structural schematic diagram of the present invention;

[0045] Figure 10 This is a schematic diagram of the structure at the arc-shaped cover 430, the inner arc strip 810, and the impeller 240.

[0046] Figures 11-12 This is a structural diagram of the outer arc strip 820, the inner arc strip 810, and the impeller 240.

[0047] Figure 13 This is a schematic diagram of the structure at the arc-shaped cover 430 and the inner arc strip 810;

[0048] Figure 14 This is a structural diagram of the air pump 220, filter element 460, and spray shell 180.

[0049] Figure 15 This is a structural diagram of the scraper frame 610, the spraying unit 700, and the spraying shell 180.

[0050] Figures 16-17 This is a structural diagram of the spraying unit 700 and the spraying shell 180.

[0051] Figure 18 This is a structural diagram of the spray unit 700, the back-blowing impeller 470, the impeller housing 480, and the filter element 460.

[0052] Figures 19-21 This is a structural diagram of the backflush impeller 470, impeller housing 480, and filter element 460.

[0053] Figures 22-23 These are exploded views of the backflush impeller 470, impeller housing 480, filter element 460, and sealing membrane 860.

[0054] Figures 24-25 This is a structural diagram of the spraying unit at position 700;

[0055] Figure 26 This is a partial structural diagram of the spraying unit at position 700;

[0056] Figure 27 This is a cross-sectional view of the gas supply module located at the center plane of the axis of the gas supply valve stem 663;

[0057] Figure 28 This is a cross-sectional view of the gas supply module. Detailed Implementation

[0058] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0059] Figures 1-28The dry desulfurization flue gas emission device of this embodiment includes a frame 110, a pipe support 120, an outer cylinder 130, and a valve seat frame 140. The pipe support 120, outer cylinder 130, and valve seat frame 140 are mounted on the frame 110. A spray shell 180 is mounted on the outer cylinder 130, and a hopper 160 is mounted on the spray shell 180. The hopper 160 has a hollow hopper cavity 161 inside, and a scraper frame 830 is installed inside the hopper cavity 161. The scraper frame 830 is equipped with a stirring sleeve 840, a connecting rod 831, and a scraper 832. The outer wall of the stirring sleeve 840 has... A stirring blade 841 is installed, and a stirring shaft 850 is fitted onto the stirring sleeve 840. The stirring shaft 850 and the hopper 160 are rotatably connected but not axially movable. A scraper motor 230 is installed on the hopper 160. The output shaft of the scraper motor 230 is connected to the stirring shaft 850. After the scraper motor 230 is started, it can drive the stirring shaft 850 to rotate, thereby driving the scraper frame 830 and the stirring sleeve 840 to rotate, so that the scraper 832 scrapes the powder in the hopper cavity 161 into the spraying unit 700, while the stirring blade 841 stirs the powder so that the powder is mixed evenly.

[0060] The spray shell 180 is equipped with a first spray shell plate 191, a second spray shell plate 192, and a third spray shell plate 193. The first spray shell plate 191, the second spray shell plate 192, and the third spray shell plate 193 are respectively assembled with the spray unit 700. One end of the spray sleeve 720 of the spray unit 700 is connected to the hopper cavity 161, and the other end passes through the third spray shell plate frame 1931 and the sealing membrane 860 and is connected to the outer cylinder cavity 131. The third spray shell plate frame 1931 is mounted on the third spray shell plate 193. The sealing membrane 860 is elastic and is mounted on the filter element 460. The spray sleeve 720 and the sealing membrane 860 are assembled and fixed, thereby using the sealing membrane 860 to seal the filter element 460 and the end of the spray shell 180 facing the outer cylinder cavity 131, reducing the probability of airflow entering and causing aging and damage to the components.

[0061] The hopper 160 is assembled with the input hopper 170. The inside of the input hopper is connected to the hopper cavity. During use, the input hopper feeds powder into the hopper. In this embodiment, the powder is a material that can adsorb sulfur gas, such as calcium hydroxide or calcium oxide.

[0062] The filter element 460 is provided with a filter support block 461, a vibrating seat 462, a vibrating rod 463, and a filter through hole 464. The two ends of the filter support block 461 are connected to the vibrating seat 462 and the filter element 460, respectively. A vibration motor 250 is installed on the vibrating seat 462. After the vibration motor 250 is started, it generates vibration, thereby driving the filter element 460 to vibrate and shake off the scale on the filter element 460.

[0063] A spring ring 4631 is installed on the vibrating rod 463. The spring ring 4631 is inserted into the vibrating sleeve cavity 491, which is located within the vibrating sleeve 490. A vibrating spring 401 is fitted on the portion of the vibrating rod 463 between the spring ring 4631 and the inner end face of the vibrating sleeve cavity 491. The vibrating spring 401 applies a spring force to the spring ring 4631 to prevent it from moving toward the filter support block 461. When the vibrating motor 250 is started, the filter element 460 vibrates. The vibrating spring 401 can buffer the vibration between the filter element 460 and the spray shell 180, and at the same time, it supports the filter element 460. The spring ring 4631 engages with and slides in the vibrating sleeve cavity 491, thereby providing guidance and circumferential restraint to the filter element 460.

[0064] The filter through-hole 464 penetrates the filter element 460, and the filter element 460, the inner wall of the spray shell 180, and the third spray shell plate 193 form an exhaust chamber 134. The part of the filter element 460 with the filter through-hole 464 is inclined to reduce the probability of being adsorbed by scale. The spray shell 180 and the exhaust chamber 134 are respectively provided with exhaust through-hole 132. The exhaust through-hole 132 is connected to the manifold 421. The manifold 421 is located inside the manifold shell 420. The manifold shell 420 is installed outside the spray shell 180. An exhaust pipe 350 is installed on the manifold shell 420. One end of the exhaust pipe 350 is connected to the inlet of the air pump 220 through a three-way connector, and the other end is connected to the secondary treatment device or the atmosphere. After the air pump 220 is started, it pressurizes the airflow in the exhaust pipe 350 and pumps it to its outlet for discharge.

[0065] An impeller housing 480 and a back-blowing impeller 470 are installed inside the exhaust chamber 134. The impeller housing 480 is mounted on the third spray shell plate 193. The interior of the impeller housing 480 is an impeller housing cavity 481. The back-blowing impeller 470 is installed inside the impeller housing cavity 481 and is fitted onto the outside of the third spray shell plate frame 1931. The impeller connecting part 474 of the back-blowing impeller 470 passes through the impeller housing 480 and is assembled with the back-blowing head 471. The interior of the back-blowing head 471 is a hollow back-blowing cavity 472. A through back-blowing hole 473 is provided on one end of the back-blowing head 471 facing the filter element 460 which has a filter through hole 464. The back-blowing cavity 472 is connected to the impeller housing cavity 481 through a connecting cavity 475, which is located on the back-blowing impeller 470.

[0066] The impeller housing cavity 481 is connected to the back-blowing air supply cavity 411 through the back-blowing connecting hole 133. The back-blowing air supply cavity 411 is located inside the back-blowing air supply shell 410, which is installed on the spray shell 180. The back-blowing connecting hole 133 is located on and penetrates the spray shell 180. The back-blowing air supply cavity 411 is connected to one end of the back-blowing air supply pipe 360, which is installed on the back-blowing air supply shell 410. The back-blowing air supply pipe 360 ​​can input pressurized airflow from the air pump to drive the back-blowing impeller 470 to rotate. The airflow then enters the back-blowing cavity 472 through the connecting cavity 475 and is then blown out from the back-blowing hole 473 and blown towards the filter through hole 464 to achieve back-blowing unblocking. At this time, the vibration of the filter element 460 is also combined to achieve better unblocking.

[0067] The spraying unit 700 includes a spraying base 710, a spraying sleeve 720, a feeding pipe 730, a spiral rod 740, a spiral blade 750, and an air supply base 760. The spraying base 710 is installed on the first spraying shell plate 191. The spraying base 710 is provided with a frustum hole 711, a spraying insertion hole 712, a spraying ring groove 713, a spraying air inlet head 714, and a fixed contact 203. One end of the spraying air inlet head 714 is connected to the spraying ring groove 713, and the other end is connected to the pressurized airflow that needs to be desulfurized. One end of the spraying insertion hole 712 is connected to the spraying ring groove 713, and the other end passes through the spraying base 710. The pressurized airflow comes from an air pump.

[0068] The spray nozzle 712 is connected to one end of the spray nozzle tube 722, and the other end of the spray nozzle tube 722 is inserted into one end of the spray nozzle air passage 721. The other end of the spray nozzle air passage 721 passes through the spray nozzle sleeve 720. The spray nozzle sleeve 720 is fitted over the air supply seat 760. An air supply ring groove 761 is provided on the outer wall of the air supply seat 760. The air supply ring groove 761 is connected to one end of the air supply channel 762, and the other end of the air supply channel 762 is connected to the first rod hole 741 of the screw rod 740. The air supply seat 760 and the spray nozzle sleeve 720 are sealed, can rotate relatively circumferentially, but cannot move relatively axially.

[0069] The spiral rod 740 has a through air blowing channel 743 inside. The two ends of the spiral rod 740 are respectively provided with a first rod hole 741 and a second rod hole 742. The first rod hole 741 and the second rod hole 742 are respectively connected to the two ends of the air blowing channel 743, so that the airflow in the air supply channel 762 enters the first rod hole 741 and then exits from the second rod hole 742 and the end of the air blowing channel 743 away from the air supply seat 760.

[0070] The air supply base 760 is equipped with a wire 202 and a moving contact 201. One end of the wire 202 is electrically connected to the power terminal of the feeding motor 260, and the other end is electrically connected to the moving contact 201. The moving contact 201 is in contact with the stationary contact 203 and conducts electricity. The stationary contact 203 is connected to the power supply to supply power to the feeding motor 260.

[0071] The air supply base 760 is assembled and fixed to one end of the feed pipe 730. The feed pipe 730 passes through the frustum hole 711, and the spraying tube 722 is sealed and inserted into the spraying hole 712. The moving contact 201 and the stationary contact 203 are in contact and conducting electricity. The feed motor 260 is installed and fixed on the air supply base 760. The output shaft of the feed motor 260 is assembled and fixed to the screw rod 740. The screw rod 740 has a screw blade 750 installed and fixed on its outer wall. The screw blade 750 is installed in the feed pipe cavity 731 of the feed pipe 730. The end of the feed pipe 730 away from the air supply base 760 passes through the second spraying shell plate 192 and the third spraying shell plate 193 respectively.

[0072] Inside the outer cylinder cavity 131, corresponding to the third spray shell plate 193, a filter element 460 is also installed. The filter element 460 is provided with several through filter holes. The filter element 460, the third spray shell plate 193, the second spray shell plate 192, and the inner wall of the outer cylinder cavity 131 form an exhaust chamber 134. The exhaust chamber 134 is connected to one end of the exhaust pipe 350. The other end of the exhaust pipe 350 can be connected to the atmosphere or connected to equipment for further desulfurization for further treatment.

[0073] In use, powdered solid adsorbent (such as calcium hydroxide) enters the feeding pipe 731, the feeding motor 260 starts, driving the screw rod 740 and the screw blade 750 to rotate, thereby conveying the solid adsorbent in the feeding pipe 731 to one end of the second rod hole 742; the pressurized airflow that needs to be desulfurized enters the blowing channel 743 and is then blown out from the end of the second rod hole 742 and the blowing channel 743 away from the air supply seat 760, thereby dispersing the powdered solid adsorbent and mixing it with the powdered solid adsorbent to form particulate mist.

[0074] See Figure 4 , Figure 6The outer cylinder cavity 131 is equipped with, from top to bottom, an arc-shaped cover 430, a first inclined plate 136, an air blowing hole ring 440, a second inclined plate 137, and a mounting plate 150. The arc-shaped cover 430 is provided with several through arc-shaped cover holes 431. The inner side of the arc-shaped cover 430 is an arc-shaped cover cavity 432. The air blowing hole ring 440 is installed below the arc-shaped cover 430 and is provided with several through holes. An air blowing chamber 135 is formed between the air blowing hole ring 440 and the inner wall of the outer cylinder 130. The air blowing chamber 135 is connected to one end of the input pipe 320, and the input pipe 320 inputs the airflow to be processed. The airflow from the input pipe 320 into the blowing chamber 135 passes through the blowing hole ring 440 and then enters the arc-shaped cover cavity 432. After passing through the arc-shaped cover hole 431, it comes into contact with the powder and reacts. After the reaction is completed, it falls onto the arc-shaped cover 430 and the first inclined plate 136.

[0075] Output units are respectively installed at the lowest points of the first inclined plate 136 and the second inclined plate 137. Each output unit includes an output tube 310, inside which an output blade 530 is installed. The output blade 530 is mounted on a spiral shaft 520. The spiral shaft 520 and the output tube 310 are rotatably coupled but not axially movable. The spiral shaft 520 is coupled to the output shaft of an output motor 210, which is mounted on the output tube 310. When the output motor 210 is started, it drives the output blade 530 to rotate, thereby outputting solid debris from the outer cylinder cavity 131. A through hole is provided at the connection between the outer cylinder 130 and the output tube 310 to facilitate debris output. The output tube 310 is mounted on a tube support 120, thereby effectively supporting the output tube.

[0076] A purge shell 510 is mounted on the mounting plate 150. The purge shell 510 has a hollow purge cavity 511 inside. A purge impeller 240 is installed inside the purge cavity 511. The purge impeller 240 is mounted on one end of the purge pipe 450. The other end of the purge pipe 450 passes through the arc-shaped cover 430 and is rotatably assembled with the arc-shaped cover 430. An inner arc strip 810 and an outer arc strip 820 are respectively installed on the inner and outer sides of the purge pipe 450 located in the arc-shaped cover 430. A through purge pipe hole 452 is provided on the part of the purge pipe 450 located in the purge cavity 511. The purge pipe hole 452 connects the purge cavity 511 and the purge pipe cavity 451. The purge pipe cavity 451 is located inside the purge pipe 450. The purge cavity 511 is connected to one end of the purge air pipe 340.

[0077] The inner arc strip 810 has a hollow inner arc strip cavity 811 inside. A through inner arc strip hole 812 is provided on the side of the inner arc strip 810 facing the arc-shaped cover 430. The inner arc strip hole 812 communicates with the inner arc strip cavity 811, and the inner arc strip cavity 811 communicates with the purge tube cavity 451 of the purge tube 450. The outer arc strip 820 has a hollow outer arc strip cavity 821 inside. A through outer arc strip hole 822 is provided on the side of the outer arc strip 820 facing the arc-shaped cover 430. The outer arc strip hole 822 communicates with the outer arc strip cavity 821, and the outer arc strip cavity 821 communicates with the purge tube cavity 451 of the purge tube 450. A pusher block 823 is installed on the outer arc strip 820. When the pusher block 823 rotates, it can push solid debris located on the first inclined plate, between the arc-shaped cover and the outer cylinder, towards the corresponding output tube 310 for output.

[0078] The purge pipe 340 can introduce airflow from the air pump to drive the purge impeller 240 to rotate, which in turn drives the purge pipe 450 to rotate. The purge pipe 450 drives the inner arc strip 810 and the outer arc strip 820 to rotate. The airflow enters the purge pipe cavity 451 from the purge pipe hole 452, and then enters the inner arc strip cavity 811 and the outer arc strip cavity 821. Finally, it is blown from the inner arc strip hole 812 and the outer arc strip hole 822 to the arc-shaped cover 430 to clean the scale on the arc-shaped cover. The arc-shaped cover is designed with an outward convex arc shape, which can effectively reduce the probability of scale adsorption and facilitate cleaning. With the purge pipe 450 rotating, the arc-shaped cover 430 can be purged in one revolution. At the same time, the pusher block 823 is used to clean the corresponding solid debris.

[0079] Solid debris located inside the arc-shaped cavity 432 falls onto the second inclined plate and is then output from the corresponding output pipe.

[0080] See Figures 1-4 , Figures 27-28 In order to detect in a timely manner when the arc-shaped cover and filter need to be cleared, this embodiment also designs an air supply module to supply air to the input pipe 320. The air supply module includes a sliding shaft 610, a lever 620, an air valve 630, a push head 640, and an air bag 650. One end of the sliding shaft 610 passes through the sliding shaft plate 670 and is assembled with the push ring 611. The sliding shaft plate 670 is mounted on the frame 110. A first spring 601 is fitted on the part of the sliding shaft 610 located between the push ring 611 and the sliding shaft plate 670. The first spring 601 applies a spring force to the push ring 611 to prevent it from moving toward the sliding shaft plate 670.

[0081] The push ring 611 is pressed against one end of the lever 620, which is hinged to the frame 110 via a pin 621. The other end of the lever 620 is pressed against the push head 640, which is mounted on the push sleeve 651, which is set on the airbag 650. The push sleeve 651 and the airbag 650 are elastic. The push sleeve 651 passes through the partition 111 and is assembled with the push head 640. The push head 640 and the partition 111 are respectively assembled with the two ends of the second spring 602. The second spring 602 applies a pulling force to the push head 640 towards the partition 111 to maintain its position. Figures 27-28 The initial state. Partition 111 is mounted on the frame.

[0082] The input pipe 320 is connected to one end of the intermediate pipe 331, and the other end of the intermediate pipe 331 is connected to one end of the access pipe 330. The access pipe 330 is used to input the airflow to be processed. An airbag is installed inside the intermediate pipe 331. The airflow passes through the middle of the airbag and then enters the input pipe 320.

[0083] A micro switch 660 is also installed on the frame 110. The micro switch 660 is not triggered in the initial state, but it will be triggered after the push head moves down. After the micro switch is triggered, it inputs a signal to the industrial control computer. The industrial control computer determines that the arc cover or / and filter is blocked and needs to be cleared. It then starts the air pump to supply air to the backflush air supply pipe 360 ​​and the purge air pipe 340, thereby driving the backflush head 471 to rotate and purge the filter 460, the inner arc strip and the outer arc strip to purge the arc cover to clear it. At the same time, the vibration motor starts.

[0084] One end of the lever 620 corresponding to the sliding shaft 610 is also tightly pressed against the end of the valve stem 633. The valve stem 633 is installed in the valve cavity 631 of the air valve 630 and assembled with the valve core 632. The valve core 632 is sealed and slidably installed in the valve cavity 631. The valve core 632 is provided with a valve core annular groove 6321. A third spring 603 is installed in the valve cavity, between the valve core 632 and the inner end face of the valve cavity. The third spring 603 applies a spring force to the valve core to push the valve stem 633, so as to maintain the valve core annular groove 6321 and the two valve tubes 634 misaligned in the initial state. Both valve tubes 634 are installed on the air valve 630 and are connected to the valve cavity. One valve tube 634 is connected to the high-pressure air pipe, and the other valve tube is connected to the backflush air supply pipe 360 ​​and the purge air pipe 340 respectively. There is a high-pressure airflow in the high-pressure air pipe, and the air valve is installed on the valve seat frame 140.

[0085] Once the arc-shaped cover and / or filter element 460 is blocked, the air pressure input at one end of the inlet pipe 330 will increase. The air pressure compresses the airbag, causing it to press against the intermediate pipe 331, thereby pushing the push sleeve 651 to overcome the elastic force of the second spring 602 and extend it to move the push head towards the lever 620, thus triggering the microswitch to start the unblocking procedure. If the air pressure continues to increase, it will drive the push head 640 to continue pushing the lever 620 to move, thereby continuing to push the lever to rotate, and the lever will compress the valve stem 633 to move upward ( Figure 27 The process continues until the valve core annular groove 6321 connects with the two valve pipes 634. At this point, high-pressure airflow enters the backflush supply pipe 360 ​​and the purge air pipe 340 respectively, thus utilizing external high-pressure airflow for purging and unblocking. This design primarily avoids situations where cleaning is impossible due to microswitch malfunction or air pump damage, thereby introducing high-pressure airflow for forced unblocking to ensure the normal operation of the equipment.

[0086] The usage process of this embodiment is roughly as follows:

[0087] S100, the feeding motor 260 of the spraying unit 700 starts, and the powder solid adsorbent is transported to the open end of the feeding pipe 731 through the spiral blade 750; the pressurized airflow that needs to be desulfurized is blown out from the blowing channel 743 and the second rod hole 742, thereby blowing the powder into particulate mist and spraying it into the outer cylinder 131.

[0088] S200: The gas requiring desulfurization enters through the inlet pipe 330 and is then blown out through the blowing hole ring 440. The airflow flows along the arc-shaped hood cavity 432 toward the spray unit 700, thereby colliding with the particulate mist. This greatly increases the contact area and contact time between the airflow and the solid adsorbent.

[0089] S300, After the reaction is complete, the airflow flows upward along the outer cylinder cavity 131, then passes through the filter element 460, and is discharged through the exhaust pipe 350.

[0090] S400 When unblocking is required (the micro switch is triggered or the valve core ring groove is connected to the valve pipe), the vibration motor starts, and the backflush air supply pipe 360 ​​and the purge air pipe 340 are fed with air to purge and unblock.

[0091] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0092] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dry desulphurization flue gas exhaust apparatus characterized by: The utility model provides a spraying device, including outer tube, spraying shell, the outer tube installs the spraying shell, the spraying shell installs third spraying shell board, third spraying shell board and spraying unit assembly, the spraying unit's spraying cover one end communicates with the hopper cavity of spraying shell, The filter piece is provided with a filter support, a vibrating seat, a vibrating rod and a filter through hole, the two ends of the filter support are connected with the vibrating seat and the filter piece respectively, and the vibrating seat is provided with a vibrating motor; The vibrating rod is provided with a spring ring, the spring ring is arranged in the vibrating sleeve cavity, the vibrating sleeve cavity is arranged in the vibrating sleeve, and the vibrating spring is arranged on the part of the vibrating rod between the spring ring and the inner end face of the vibrating sleeve cavity; The filter through hole penetrates the filter piece, and the filter piece, the inner wall of the spraying shell and the third spraying shell plate form an exhaust cavity; The exhaust cavity is provided with an impeller shell and a back flushing impeller, the impeller shell is arranged on the third spraying shell plate, the inner part of the impeller shell is an impeller shell cavity, the back flushing impeller is arranged in the impeller shell cavity, and the back flushing impeller is sleeved on the third spraying shell plate frame; the connecting part of the back flushing impeller penetrates the impeller shell and is assembled with a back flushing head, the inner part of the back flushing head is a hollow back flushing cavity, one end of the part of the back flushing head provided with the filter through hole is provided with a back flushing hole, the back flushing cavity is communicated with the impeller shell cavity through a communication cavity, and the communication cavity is arranged on the back flushing impeller; The impeller shell cavity is communicated with a back flushing air supply cavity through a back flushing communication hole, the back flushing air supply cavity is arranged in a back flushing air supply shell, the back flushing air supply shell is arranged on the spraying shell, the back flushing communication hole is arranged on the spraying shell and penetrates the spraying shell, the back flushing air supply cavity is communicated with one end of a back flushing air supply pipe, and the back flushing air supply pipe is arranged on the back flushing air supply shell; The outer tube cavity of the outer tube is provided with an arc cover, the gas input into the outer tube cavity passes through the arc cover and then moves to the spraying unit, and the powder output by the spraying unit reacts with the gas and then outputs the airflow; The outer tube is provided with a mounting plate, the mounting plate is provided with a purge shell, the inner part of the purge shell is a hollow purge cavity, the purge cavity is provided with a purge impeller, the purge impeller is arranged on one end of a purge pipe, the other end of the purge pipe penetrates the arc cover and is assembled with the arc cover, the purge pipe is provided with an inner arc strip and an outer arc strip on the inner and outer sides of the arc cover respectively, the part of the purge pipe in the purge cavity is provided with a purge pipe hole, the purge pipe hole communicates the purge cavity with a purge pipe cavity, the purge pipe cavity is arranged in the purge pipe, and the purge cavity is communicated with one end of a purge gas pipe; The inner part of the inner arc strip is a hollow inner arc strip cavity, one side of the inner arc strip facing the arc cover is provided with an inner arc strip hole, the inner arc strip hole is communicated with the inner arc strip cavity, the inner arc strip cavity is communicated with the purge pipe cavity of the purge pipe, the inner part of the outer arc strip is a hollow outer arc strip cavity, one side of the outer arc strip facing the arc cover is provided with an outer arc strip hole, the outer arc strip hole is communicated with the outer arc strip cavity, and the outer arc strip cavity is communicated with the purge pipe cavity of the purge pipe; The utility model also provides a gas supply module, the gas supply module comprises a sliding shaft, a lever, a gas valve, a push head and a gas bag, one end of the sliding shaft penetrates a sliding shaft plate and is assembled with a push ring, the sliding shaft plate is arranged on a rack, and the part of the sliding shaft between the push ring and the sliding shaft plate is sleeved with a first spring. The pushing ring is in close contact with one end of the lever, the lever is hinged to the frame through a pin, the other end of the lever is in close contact with the pushing head, the pushing head is installed on the pushing sleeve, the pushing sleeve is arranged on the air bag, the pushing sleeve and the air bag have telescopic elasticity, the pushing sleeve is assembled with the pushing head after passing through the partition plate, the pushing head and the partition plate are respectively assembled with two ends of the second spring, and the partition plate is installed on the frame; The input pipe is communicated with one end of the intermediate pipe, the other end of the intermediate pipe is communicated with one end of the access pipe, the access pipe is used for inputting the airflow needing to be treated, the intermediate pipe is internally provided with an air bag, and the airflow passes through the air bag and is then input into the input pipe; The frame is further provided with a micro switch, the micro switch is not triggered in the initial state, and the micro switch is triggered after the pushing head moves downward, and the micro switch inputs a signal to the industrial computer after being triggered. The lever is in close contact with the end of the valve rod corresponding to the sliding shaft, the valve rod is installed in the valve cavity of the air valve and is assembled with the valve core, the valve core is sealingly and slidingly installed in the valve cavity, a valve core ring groove is arranged on the valve core, a third spring is installed between the valve core and the inner end face of the valve cavity, the third spring applies a pushing force to the valve core to the valve rod, so that the valve core ring groove is misaligned with the two valve pipes in the initial state, and the two valve pipes are both installed on the air valve and are both communicated with the valve cavity. One of the two valve pipes is communicated with the high-pressure gas pipe, and the other valve pipe is respectively communicated with the back-blowing gas supply pipe and the purging gas pipe, the high-pressure gas pipe has a high-pressure airflow, and the air valve is installed on the valve seat frame. When the arc-shaped cover and / or the filter element are blocked, the gas pressure input at one end of the access pipe is increased, the gas pressure extrudes the air bag to make the air bag extrude the intermediate pipe, so that the pushing sleeve is elongated to drive the pushing head to move to the lever, so that the micro switch is triggered; if the gas pressure continues to increase, the pushing head will continue to push the lever to move, so as to continue to push the lever to rotate, the lever extrudes the valve rod to move until the valve core ring groove is communicated with the two valve pipes, at this time, the high-pressure airflow enters the back-blowing gas supply pipe and the purging gas pipe respectively.

2. The dry desulfurization flue gas emission device according to claim 1, characterized in that: The material hopper is installed on the material spraying shell, the material hopper is internally provided with a hollow material hopper cavity, a scraping frame is installed in the material hopper cavity, the scraping frame is installed with a stirring sleeve, a connecting rod and a scraping plate, stirring blades are installed on the outer wall of the stirring sleeve, the stirring sleeve is sleeved with a stirring shaft, and the stirring shaft is assembled with the material hopper.

3. The dry desulfurization flue gas emission device according to claim 1, characterized in that: One end of the material spraying sleeve passes through the third material spraying shell plate frame and the sealing membrane and is communicated with the outer cylinder cavity, the third material spraying shell plate frame is installed on the third material spraying shell plate, the sealing membrane has elasticity and is installed on the filter element, and the material spraying sleeve is assembled and fixed with the sealing membrane.

4. The dry desulfurization flue gas emission device according to claim 1, characterized in that: An exhaust hole is arranged at the position corresponding to the exhaust cavity of the material spraying shell, the exhaust hole is communicated with the converging cavity, the converging cavity is arranged in the converging shell, the converging shell is installed outside the material spraying shell, an exhaust pipe is installed on the converging shell, one end of the exhaust pipe is communicated with the inlet of the air pump through a three-way joint, and the other end of the exhaust pipe is communicated with the secondary treatment device or the atmosphere.

5. The dry desulfurization flue gas emission device as claimed in claim 1, wherein: The spraying unit is provided with a spraying motor, a feeding pipe and a screw rod. The output shaft of the spraying motor is fixedly connected with the screw rod. The screw rod is arranged in the feeding pipe and is provided with spiral blades.

6. The dry desulphurization flue gas emission device as claimed in claim 5, wherein: The spraying unit comprises a spraying seat, a spraying sleeve, a feeding pipe and a gas supply seat. The spraying seat is arranged on the first spraying shell plate. The spraying seat is provided with a circular table hole, a spraying jack, a spraying ring groove, a spraying gas inlet head and fixed contacts. One end of the spraying gas inlet head is communicated with the spraying ring groove, and the other end is communicated with the pressurized gas flow requiring desulfurization. One end of the spraying jack is communicated with the spraying ring groove, and the other end penetrates the spraying seat. One end of the spraying jack is connected with the spraying sleeve, and the other end of the spraying sleeve is arranged in the gas supply seat. The outer wall of the gas supply seat is provided with a gas supply ring groove which is communicated with one end of a gas supply channel. The other end of the gas supply channel is communicated with the first rod hole of the screw rod. The gas supply seat is assembled with the spraying sleeve. The screw rod is provided with a blow channel. The two ends of the screw rod are respectively provided with the first rod hole and the second rod hole. The first rod hole and the second rod hole are respectively communicated with the two ends of the blow channel, so that the gas flow in the gas supply channel enters the first rod hole and then is discharged from the second rod hole and the end of the blow channel away from the gas supply seat.

7. The dry desulphurization flue gas emission device as claimed in claim 6, wherein: The gas supply seat is provided with a wire and a movable contact. One end of the wire is electrically connected with the power connection end of the feeding motor, and the other end is electrically connected with the movable contact. The movable contact is in contact with the fixed contact to conduct electricity. The fixed contact is connected with the power supply to supply power to the feeding motor. The feeding motor is fixedly arranged on the gas supply seat. The output shaft of the feeding motor is assembled with the screw rod. The outer wall of the screw rod is provided with spiral blades. The spiral blades are arranged in the feeding pipe cavity of the feeding pipe. The end of the feeding pipe away from the gas supply seat penetrates the second spraying shell plate and the third spraying shell plate.

8. A dry desulphurisation flue gas exhaust apparatus as claimed in any one of claims 1 to 7, characterised in that: The outer cylinder cavity is provided with an arc cover, a first inclined plate, a blow hole ring and a second inclined plate from top to bottom. The arc cover is provided with a plurality of arc cover holes. The inner side of the arc cover is an arc cover cavity. The blow hole ring is arranged below the arc cover and is provided with a plurality of through holes. The blow hole ring and the inner wall of the outer cylinder form a blow cavity. The blow cavity is communicated with one end of the input pipe. The input pipe inputs the gas flow requiring treatment. The gas flow in the blow cavity enters the arc cover cavity after being uniformly blown by the blow hole ring, and then passes through the arc cover hole to react with the powder. After the reaction is completed, the reaction product falls on the arc cover and the first inclined plate. The lowest parts of the first and second inclined plates are respectively provided with output units, the output unit comprises an output pipe, an output vane is arranged in the output pipe, the output vane is arranged on a spiral shaft, the spiral shaft is assembled with the output pipe, the spiral shaft is assembled with an output shaft of an output motor, and the output motor is arranged on the output pipe.

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