Flue gas demercuration and dust removal system

Abstract

The invention relates to the technical field of flue gas treatment, and discloses a flue gas demercuration and dust removal system which comprises a dust removal module, the dust removal module comprises a treatment cylinder, a hollow rotating cylinder rotationally arranged on the lower surface of the treatment cylinder and extending into the treatment cylinder, and an annular spraying pipe arranged at the top of the hollow rotating cylinder, a plurality of atomization nozzles are arranged on the surface of the annular spraying pipe in a circumferential array mode, and a driving motor used for driving dust removal water in the treatment barrel to enter the annular spraying pipe is fixedly arranged on the lower surface of the treatment barrel. And the mercury removal module is used for removing mercury in the flue gas. By arranging the dust removal module, sufficient dust removal of flue gas can be guaranteed, high-efficiency dust removal can be achieved, meanwhile, the structure is simple, operation is achieved only through one driving motor, the operation cost is low, dust in the flue gas can be removed more sufficiently through wet dust removal, circulating spraying can be achieved, and the service life is long.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas treatment, and in particular to a flue gas mercury removal and dust removal system. Background Art

[0002] In the thermal power generation industry, flue gas emissions are one of the important sources of environmental pollution. In particular, mercury and particulate matter in flue gas pose serious hazards to the environment and human health. With the increasingly strict environmental protection regulations, flue gas mercury removal and dust removal technologies have become the key research directions in the thermal power industry. Currently, in the industry, technologies such as adsorbent injection, electrostatic precipitators, and bag filters are mainly used to treat flue gas. These technologies have achieved certain results in reducing pollutant emissions, but there are still many problems in practical applications, such as high equipment costs, high operating energy consumption, and unstable treatment efficiency.

[0003] Specific solutions of the prior art: Electrostatic precipitator: Utilize a high-voltage electric field to charge the particulate matter in the flue gas and adsorb it on the dust collection plate. The advantage is relatively high dust removal efficiency, and the disadvantages are limited capture ability for fine particulate matter, large equipment volume, and high energy consumption.

[0004] Bag filter: Capture the particulate matter in the flue gas through a filter bag. The advantage is high dust removal efficiency, especially good capture effect for fine particulate matter, and the disadvantages are that the filter bag is prone to clogging, short service life, and high maintenance costs.

[0005] In summary, the existing flue gas mercury removal and dust removal equipment has the problem of unstable capture efficiency for fine particulate matter and mercury, and the equipment in the prior art has problems of high maintenance costs and short service life. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The present invention provides a flue gas mercury removal and dust removal system, including: Dust removal module, which is used to remove dust in flue gas. The dust removal module includes a treatment cylinder, an air inlet pipe and a discharge pipe respectively arranged at the bottom and the outer surface of the treatment cylinder. One end of the air inlet pipe is communicated with the equipment smoke exhaust pipe. A valve is arranged on the surface of the discharge pipe. And dust removal water is filled in the treatment cylinder. The dust removal module further includes a hollow rotating cylinder rotatably arranged on the lower surface of the treatment cylinder and extending into the treatment cylinder, and an annular spray pipe arranged at the top of the hollow rotating cylinder. A plurality of atomizing nozzles are arranged on the surface of the annular spray pipe in a circumferential array. A hollow disk is fixedly arranged on the outer surface of the hollow rotating cylinder. The other end of the air inlet pipe extends into the hollow disk. An annular opening is formed on the lower surface of the hollow disk. A rotating ring is rotatably arranged on the inner wall of the annular opening. An installation hole is formed on the surface of the rotating ring. And the outer surface of the air inlet pipe is fixedly connected with the inner wall of the installation hole. A plurality of air outlet pipes are arranged on the upper surface of the hollow disk in a circumferential array. A driving motor is fixedly arranged on the lower surface of the treatment cylinder for driving the dust removal water inside the treatment cylinder to enter the annular spray pipe. Mercury removal module, which is used to remove mercury in flue gas. The mercury removal module includes an installation pipe fixedly arranged on the upper surface of the treatment cylinder and extending into the treatment cylinder, and mercury removal resin arranged inside the installation pipe.

[0008] By adopting the above technical scheme, it is possible to fully remove the dust in the flue gas, with a long service life and reduced costs for enterprises.

[0009] Preferably, four communication pipes are fixedly arranged on the outer surface of the top end of the hollow rotating cylinder in a circumferential array. One end of each communication pipe extends into the annular spray pipe, and the other end extends into the hollow rotating cylinder.

[0010] By adopting the above technical scheme, the dust removal water in the hollow rotating cylinder can be conveyed into the annular spray pipe through the communication pipes.

[0011] Preferably, a driving gear disk is fixedly arranged at the output end of the driving motor, and a driven gear disk meshing with the driving gear disk is fixedly arranged on the outer surface of the bottom end of the hollow rotating cylinder.

[0012] By adopting the above technical scheme, the rotation of the driving motor can drive the driving gear disk to rotate, thereby driving the driven gear disk and the hollow rotating cylinder to rotate.

[0013] Preferably, a rectangular box is fixedly arranged on the lower surface of the treatment cylinder. A sealing plate and a rectangular plate are respectively slidably arranged on the inner wall of the rectangular box. Two connecting rods are fixedly arranged between the sealing plate and the rectangular plate.

[0014] By adopting the above technical scheme, when the rectangular plate moves, the sealing plate can be driven to move through the connecting rods.

[0015] Preferably, a reciprocating lead screw extending into the rectangular box is rotatably provided on the outer surface of the rectangular box, and a threaded hole threadedly connected to the outer surface of the reciprocating lead screw is provided on the surface of the rectangular plate. A first bevel gear is fixedly provided at the end of the reciprocating lead screw, and a driving bevel gear meshing with the first bevel gear is fixedly provided on the outer surface of the bottom end of the hollow rotating cylinder.

[0016] By adopting the above technical solution, the rotation of the reciprocating lead screw can drive the rectangular plate to move automatically, and at the same time, the rotation of the hollow rotating cylinder can drive the reciprocating lead screw to rotate automatically.

[0017] Preferably, a water suction pipe and a water delivery pipe are respectively provided at the end of the rectangular box. One end of the water suction pipe extends into the rectangular box, and the other end extends to the inner bottom of the treatment cylinder. One end of the water delivery pipe extends into the rectangular box, and the other end extends into the hollow rotating cylinder. A rotating hole for the rotation of the water delivery pipe is provided at the bottom end of the hollow rotating cylinder. Water suction one-way valves and water delivery one-way valves are respectively provided on the surfaces of the water suction pipe and the water delivery pipe.

[0018] By adopting the above technical solution, when the sealing plate moves towards the center of the bottom of the treatment cylinder, the dust removal water inside the treatment cylinder can be sucked into the rectangular box through the water suction pipe. When the sealing plate moves towards the periphery of the treatment cylinder, the dust removal water can be delivered into the hollow rotating cylinder through the water delivery pipe, and then delivered into the annular spray pipe through the communicating pipe, and finally sprayed out through the atomizing nozzles to further spray and remove dust from the flue gas passing through the dust removal water.

[0019] Preferably, one end of the water suction pipe located inside the treatment cylinder is provided with an arc-shaped water collecting tank, and an arc-shaped filter screen is provided on the inner arc surface of the arc-shaped water collecting tank. A scraping plate slidably connected to the inner arc surface of the arc-shaped filter screen is fixedly provided on the lower surface of the hollow disc.

[0020] By adopting the above technical solution, the dust removal water entering the rectangular box can be filtered through the arc-shaped filter screen, and at the same time, the scraping plate can be driven to scrape the particulate impurities attached to the surface of the arc-shaped filter screen during the rotation of the hollow disc, ensuring that the dust removal water can smoothly enter the water suction pipe.

[0021] Preferably, a connecting cylinder is provided on the surface of the air inlet pipe, and a connecting shaft is rotatably provided on the inner wall of the air inlet pipe. One end of the connecting shaft extends into the connecting cylinder and is fixedly provided with a suction fan blade, and the other end of the connecting shaft extends to the outer surface of the air inlet pipe and is fixedly provided with a second bevel gear meshing with the driving bevel gear.

[0022] By adopting the above technical solution, during the rotation of the hollow rotating cylinder, the driving bevel gear can drive the second bevel gear to rotate, so that the rotation of the hollow rotating cylinder can drive the connecting shaft to rotate automatically.

[0023] Preferably, an intercepting net plate is fixedly arranged above the liquid level of the dust removal water on the inner wall of the treatment cylinder, and through holes for the hollow rotating cylinder to rotate are formed on the surface of the intercepting net plate. Two cutting net disks for cutting air bubbles are fixedly arranged on the outer surface of the hollow rotating cylinder.

[0024] By adopting the above technical scheme, the cutting net disk can be driven to cut the air bubbles in the dust removal water during the rotation of the hollow rotating cylinder, so that the flue gas in the air bubbles can fully contact the dust removal water.

[0025] Preferably, a sealing cover is threadedly connected to the top of the installation pipe. A threaded connection ring is arranged on the inner top wall of the sealing cover, and an annular threaded groove threadedly connected to the threaded connection ring is formed on the inner top wall of the sealing cover. A net cylinder is fixedly arranged at the bottom end of the threaded connection ring. The mercury removal resin is filled in the net cylinder. Two exhaust pipes are symmetrically arranged on the upper surface of the sealing cover, and two symmetric net disks are fixedly arranged on the inner walls of the exhaust pipes. An operation handle is fixedly arranged on the upper surface of the sealing cover.

[0026] By adopting the above technical scheme, it is convenient to replace the mercury removal resin under the action of the sealing cover and the threaded connection ring.

[0027] The beneficial effects of the present invention are as follows: For the flue gas mercury removal and dust removal system of the present invention, by arranging a dust removal module, the sufficiency of flue gas dust removal can be ensured, and thus high-efficiency dust removal can be achieved. At the same time, the structure is simple, only driven by one driving motor to operate, with low operation cost. Moreover, through wet dust removal, the dust in the flue gas can be removed more fully, and it can be circulated for spraying, with a long service life.

[0028] For the flue gas mercury removal and dust removal system of the present invention, by arranging a mercury removal module, the mercury in the flue gas can be adsorbed by the mercury removal resin in the installation pipe after dust removal. It can reduce the overall cost of the enterprise during long-term operation, and the service life of the mercury removal resin can reach 7 years, which has a more promising application prospect than the 1.5-year service life of activated carbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a bottom structural schematic diagram of the present invention; Figure 3 is a schematic diagram of the internal structure of the treatment cylinder of the present invention; Figure 4 is a sectional structural schematic diagram of the present invention; Figure 5 is the present invention Figure 4 the enlarged structural schematic diagram at A in; Figure 6 is the enlarged structural schematic diagram of the B part in the present invention Figure 4 ; Figure 7 is the enlarged structural schematic diagram of the C part in the present invention Figure 4 ; Figure 8 is the enlarged structural schematic diagram of the D part in the present invention Figure 4 ;

[0030] Explanation of reference numerals in the drawings: 100, dust removal module; 101, treatment cylinder; 102, intake pipe; 103, discharge pipe; 104, hollow rotating cylinder; 105, annular spray pipe; 106, atomizing nozzle; 107, hollow disk; 108, rotating ring; 109, driving motor; 1010, connecting pipe; 1011, driving gear disk; 1012, driven gear disk; 1013, rectangular box; 1014, sealing plate; 1015, rectangular plate; 1016, connecting rod; 1017, reciprocating lead screw; 1018, first bevel gear; 1019, driving bevel gear; 1020, water suction pipe; 1021, water delivery pipe; 1022, water suction check valve; 1023, water delivery check valve; 1024, arc-shaped water collecting tank; 1025, arc-shaped filter screen; 1026, scraper; 1027, cutting disk net; 1028, connecting cylinder; 1029, connecting shaft; 1030, suction fan blade; 1031, second bevel gear; 1032, intercepting net plate; 1033, exhaust pipe 200, mercury removal module; 201, installation pipe; 202, mercury removal resin; 203, sealing cover; 204, threaded connection ring; 205, mesh cylinder; 206, exhaust pipe; 207, disk net Detailed implementation manners

[0031] Now, the subject matter described herein will be discussed with reference to exemplary embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the protection scope of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples Embodiment

[0032] The technical solution of the present invention will be further elaborated in detail below in combination with the accompanying drawings of the specification and specific embodiments. Please refer to Figures 1 to 8 , a flue gas mercury removal and dust removal system provided by the present application. Please pay special attention to referring to Figures 4 to 8, including: a dust removal module 100 for removing dust in the flue gas. The dust removal module 100 includes a treatment cylinder 101, an intake pipe 102 and a discharge pipe 103 respectively arranged at the bottom and the outer surface of the treatment cylinder 101. One end of the intake pipe 102 is communicated with the equipment smoke exhaust pipe. A valve is arranged on the surface of the discharge pipe 103, and dust removal water is filled in the treatment cylinder 101. The dust removal module 100 further includes a hollow rotating cylinder 104 rotatably arranged on the lower surface of the treatment cylinder 101 and extending into the treatment cylinder 101, and an annular spray pipe 105 arranged at the top of the hollow rotating cylinder 104. A plurality of atomizing nozzles 106 are arranged on the surface of the annular spray pipe 105 in a circumferential array. A hollow disc 107 is fixedly arranged on the outer surface of the hollow rotating cylinder 104. The other end of the intake pipe 102 extends into the hollow disc 107. An annular opening is formed on the lower surface of the hollow disc 107. A rotating ring 108 is rotatably arranged on the inner wall of the annular opening. Mounting holes are formed on the surface of the rotating ring 108, and the outer surface of the intake pipe 102 is fixedly connected with the inner wall of the mounting hole. A plurality of air outlet pipes 1033 are arranged on the upper surface of the hollow disc 107 in a circumferential array, and an air outlet one-way valve is arranged on the surface of the air outlet pipe 1033. A driving motor 109 for driving the dust removal water in the treatment cylinder 101 to enter the annular spray pipe 105 is fixedly arranged on the lower surface of the treatment cylinder 101; a mercury removal module 200 for removing mercury in the flue gas. The mercury removal module 200 includes a mounting pipe 201 fixedly arranged on the upper surface of the treatment cylinder 101 and extending into the treatment cylinder 101, and mercury removal resin 202 arranged in the mounting pipe 201. The type of the mercury removal resin 202 is CH-95 or CH-97.

[0033] Specifically, it can fully remove the dust in the flue gas, simultaneously achieve efficient mercury removal, has a long service life of the equipment, is convenient for maintenance, and reduces the cost of the enterprise.

[0034] Please refer specifically to Figure 4 , four connecting pipes 1010 are fixedly arranged on the outer surface of the top end of the hollow rotating cylinder 104 in a circumferential array, and one end of each connecting pipe 1010 extends into the annular spray pipe 105, and the other end extends into the hollow rotating cylinder 104.

[0035] Specifically, the dust removal water in the hollow rotating cylinder 104 can be conveyed into the annular spray pipe 105 through the connecting pipes 1010.

[0036] Please refer specifically to Figure 4 and Figure 5 , a driving gear disc 1011 is fixedly arranged at the output end of the driving motor 109, and a driven gear disc 1012 meshing with the driving gear disc 1011 is fixedly arranged on the outer surface of the bottom end of the hollow rotating cylinder 104.

[0037] Specifically, the rotation of the driving motor 109 can drive the rotation of the driving gear disc 1011, thereby driving the rotation of the driven gear disc 1012 and the hollow rotating cylinder 104.

[0038] Please refer specifically to Figure 4 and Figure 7 On the lower surface of the treatment cylinder 101, a rectangular box 1013 is fixedly installed. Inside the inner wall of the rectangular box 1013, a sealing plate 1014 and a rectangular plate 1015 are respectively slidably arranged. Two connecting rods 1016 are fixedly installed between the sealing plate 1014 and the rectangular plate 1015.

[0039] Specifically, when the rectangular plate 1015 moves, the connecting rod 1016 can drive the sealing plate 1014 to move.

[0040] Please refer specifically to Figure 5 and Figure 7 On the outer surface of the rectangular box 1013, a reciprocating lead screw 1017 extending into the rectangular box 1013 is rotatably arranged. A threaded hole threadedly connected to the outer surface of the reciprocating lead screw 1017 is formed on the surface of the rectangular plate 1015. A first bevel gear 1018 is fixedly installed at the end of the reciprocating lead screw 1017. A driving bevel gear 1019 meshing with the first bevel gear 1018 is fixedly installed on the outer surface of the bottom end of the hollow rotating cylinder 104.

[0041] Specifically, the rotation of the reciprocating lead screw 1017 can drive the rectangular plate 1015 to move automatically. At the same time, the rotation of the hollow rotating cylinder 104 can drive the reciprocating lead screw 1017 to rotate automatically.

[0042] Please refer specifically to Figure 4 and Figure 7 At the ends of the rectangular box 1013, a water suction pipe 1020 and a water delivery pipe 1021 are respectively arranged. One end of the water suction pipe 1020 extends into the rectangular box 1013, and the other end extends to the inner bottom of the treatment cylinder 101. One end of the water delivery pipe 1021 extends into the rectangular box 1013, and the other end extends into the hollow rotating cylinder 104. A rotating hole for the rotation of the water delivery pipe 1021 is formed at the bottom end of the hollow rotating cylinder 104. A water suction one-way valve 1022 and a water delivery one-way valve 1023 are respectively arranged on the surfaces of the water suction pipe 1020 and the water delivery pipe 1021.

[0043] Specifically, when the sealing plate 1014 moves towards the center of the bottom of the treatment cylinder 101, the dust removal water inside the treatment cylinder 101 can be sucked into the rectangular box 1013 through the water suction pipe 1020. When the sealing plate 1014 moves towards the periphery of the treatment cylinder 101, the dust removal water can be transported to the hollow rotating cylinder 104 through the water delivery pipe 1021, and then transported to the annular spray pipe 105 through the connecting pipe 1010, and finally sprayed out through the atomizing nozzle 106 to further spray and remove dust from the flue gas passing through the dust removal water.

[0044] Please refer specifically to Figure 7 , one end of the water suction pipe 1020 located inside the treatment cylinder 101 is provided with an arc-shaped water collecting tank 1024, and an arc-shaped filter screen 1025 is arranged on the inner arc surface of the arc-shaped water collecting tank 1024. A scraping plate 1026 that is slidably connected to the inner arc surface of the arc-shaped filter screen 1025 is fixedly arranged on the lower surface of the hollow disk 107.

[0045] Specifically, the arc-shaped filter screen 1025 can filter the dust removal water entering the rectangular box 1013. At the same time, during the rotation of the hollow disk 107, the scraping plate 1026 can be driven to scrape off the particulate impurities attached to the surface of the arc-shaped filter screen 1025, ensuring that the dust removal water can smoothly enter the water suction pipe 1020.

[0046] Please refer specifically to Figure 5 and Figure 6 , a connecting cylinder 1028 is arranged on the surface of the air inlet pipe 102, and a connecting shaft 1029 is rotatably arranged on the inner wall of the air inlet pipe 102. One end of the connecting shaft 1029 extends into the interior of the connecting cylinder 1028 and is fixedly provided with a suction fan blade 1030, and the other end of the connecting shaft 1029 extends to the outer surface of the air inlet pipe 102 and is fixedly provided with a second bevel gear 1031 that meshes with the driving bevel gear 1019.

[0047] Specifically, during the rotation of the hollow rotating cylinder 104, the driving bevel gear 1019 can drive the second bevel gear 1031 to rotate, so that the rotation of the hollow rotating cylinder 104 can drive the connecting shaft 1029 to rotate automatically.

[0048] Please refer specifically to Figure 3 and Figure 4 , a blocking net plate 1032 is fixedly arranged on the inner wall of the treatment cylinder 101 above the liquid level of the dust removal water, and through holes for the rotation of the hollow rotating cylinder 104 are formed on the surface of the blocking net plate 1032. Two cutting disk nets 1027 for cutting bubbles are fixedly arranged on the outer surface of the hollow rotating cylinder 104.

[0049] Specifically, during the rotation of the hollow rotating cylinder 104, the cutting disk net 1027 can be driven to cut the bubbles in the dust removal water, so that the flue gas in the bubbles can fully contact the dust removal water.

[0050] Among them, by setting the dust removal module 100, when the dust removal system removes dust particles in the flue gas, the flue gas can be conveyed through the air inlet pipe 102 to the inside of the hollow disc 107 and discharged into the dust removal water at the inner bottom of the treatment cylinder 101 through the air outlet pipe 1033, so that the dust in the flue gas can be absorbed by the dust removal water. At the same time, the driving motor 109 is started, and the rotation of the driving motor 109 drives the rotation of the driving gear disc 1011. The rotation of the driving gear disc 1011 drives the rotation of the driven gear disc 1012 and the hollow rotating cylinder 104. The rotation of the hollow rotating cylinder 104 drives the rotation of the hollow disc 107, so that the flue gas discharged from the air outlet pipe 1033 on the hollow disc 107 can fully contact the dust removal water. Moreover, when the driving motor 109 drives the hollow rotating cylinder 104 to rotate, it can drive the rotation of the driving bevel gear 1019. On the one hand, the rotation of the driving bevel gear 1019 drives the rotation of the connecting shaft 1029 through the second bevel gear 1031. The rotation of the connecting shaft 1029 drives the rotation of the suction fan blade 1030, so that the flue gas can be sucked into the inside of the hollow disc 107, ensuring the normal conveyance of the flue gas. On the other hand, the rotation of the driving bevel gear 1019 drives the rotation of the reciprocating lead screw 1017 through the first bevel gear 1018. The rotation of the reciprocating lead screw 1017 drives the rectangular plate 1015 to move back and forth, and then drives the sealing plate 1014 to move back and forth through the connecting rod 1016. When the sealing plate 1014 moves towards the center of the bottom of the treatment cylinder 101, the dust removal water inside the treatment cylinder 101 can be sucked into the rectangular box 1013 through the water suction pipe 1020. When the sealing plate 1014 moves towards the periphery of the treatment cylinder 101, the dust removal water can be conveyed into the hollow rotating cylinder 104 through the water delivery pipe 1021 and conveyed into the annular spray pipe 105 through the communicating pipe 1010, and finally sprayed out through the atomizing nozzle 106 to further spray and remove dust from the flue gas passing through the dust removal water, thereby ensuring the sufficiency of dust removal from the flue gas, achieving high-efficiency dust removal, having a simple structure, only operating with one driving motor 109, having a low operating cost, and being able to make the dust in the flue gas removed more fully through wet dust removal, and being able to spray and circulate, with a long service life.

[0051] Please refer specifically to Figure 4 and Figure 8 At the top of the installation pipe 201, a sealing cover 203 is threadedly connected. The inner top wall of the sealing cover 203 is provided with a threaded connection ring 204, and an annular threaded groove threadedly connected to the threaded connection ring 204 is opened on the inner top wall of the sealing cover 203. A net cylinder 205 is fixedly provided at the bottom end of the threaded connection ring 204. The mercury removal resin 202 is filled inside the net cylinder 205. Two exhaust pipes 206 are symmetrically arranged on the upper surface of the sealing cover 203, and two symmetrical net discs 207 are fixedly provided on the inner walls of the exhaust pipes 206. An operation handle is fixedly provided on the upper surface of the sealing cover 203.

[0052] Specifically, under the action of the sealing cover 203 and the threaded connection ring 204, it is convenient to replace the mercury removal resin 202.

[0053] Among them, by setting the mercury removal module 200 in the present invention, the mercury in the flue gas can be adsorbed by the mercury removal resin 202 in the installation pipe 201 after being dedusted. It can reduce the overall cost of the enterprise during long-term operation, and the service life of the mercury removal resin 202 can reach 7 years, which has a more promising application prospect than the 1.5-year service life of activated carbon.

[0054] Working principle: When removing dust particles in the flue gas, this dust removal system can transport the flue gas through the intake pipe 102 to the inside of the hollow disk 107, and discharge it into the dust removal water at the inner bottom of the treatment cylinder 101 through the outlet pipe 1033, so that the dust in the flue gas can be absorbed by the dust removal water. At the same time, the driving motor 109 is started. The rotation of the driving motor 109 drives the rotation of the driving gear disk 1011. The rotation of the driving gear disk 1011 drives the rotation of the driven gear disk 1012 and the hollow rotating cylinder 104. The rotation of the hollow rotating cylinder 104 drives the rotation of the hollow disk 107, so that the flue gas discharged from the outlet pipe 1033 on the hollow disk 107 can fully contact the dust removal water. Moreover, when the driving motor 109 drives the hollow rotating cylinder 104 to rotate, it can drive the rotation of the driving bevel gear 1019. On the one hand, the rotation of the driving bevel gear 1019 drives the rotation of the connecting shaft 1029 through the second bevel gear 1031. The rotation of the connecting shaft 1029 drives the rotation of the suction fan blade 1030, so that the flue gas can be sucked into the inside of the hollow disk 107, ensuring the normal transportation of the flue gas. On the other hand, the rotation of the driving bevel gear 1019 drives the rotation of the reciprocating lead screw 1017 through the first bevel gear 1018. The rotation of the reciprocating lead screw 1017 drives the rectangular plate 1015 to move back and forth, and then drives the sealing plate 1014 to move back and forth through the connecting rod 1016. When the sealing plate 1014 moves towards the center of the bottom of the treatment cylinder 101, it can suck the dust removal water inside the treatment cylinder 101 into the rectangular box 1013 through the water suction pipe 1020. When the sealing plate 1014 moves towards the periphery of the treatment cylinder 101, it can transport the dust removal water into the hollow rotating cylinder 104 through the water delivery pipe 1021, and then transport it into the annular spray pipe 105 through the communication pipe 1010, and finally spray it out through the atomizing nozzles 106 to further spray and dust the flue gas passing through the dust removal water, thus ensuring the sufficiency of dust removal of the flue gas, and then being able to achieve high-efficiency dust removal. At the same time, the structure is simple, only driven by one driving motor 109, the operation cost is low, and through wet dust removal, the dust in the flue gas can be removed more fully, and it can be sprayed cyclically with a long service life. Moreover, the flue gas after dust removal can adsorb mercury in the flue gas through the mercury removal resin 202 in the installation pipe 201. It can reduce the overall cost of the enterprise during long-term operation, and the service life of the mercury removal resin 202 can reach 7 years, which has a better application prospect than the 1.5-year service life of activated carbon.

[0055] The above describes the embodiments of the specific implementation manner, but this embodiment is not limited to the above specific implementation manner. The above specific implementation manner is only illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A flue gas mercury removal and dust removal system, characterized in that, Comprising: A dust removal module (100) for removing dust in flue gas. The dust removal module (100) includes a processing cylinder (101), an air inlet pipe (102) and a discharge pipe (103) respectively arranged at the bottom and the outer surface of the processing cylinder (101). One end of the air inlet pipe (102) is communicated with the equipment smoke exhaust pipe. A valve is arranged on the surface of the discharge pipe (103), and dust removal water is filled in the processing cylinder (101). The dust removal module (100) further includes a hollow rotating cylinder (104) rotatably arranged on the lower surface of the processing cylinder (101) and extending into the processing cylinder (101), and an annular spray pipe (105) arranged at the top of the hollow rotating cylinder (104). A plurality of atomizing nozzles (106) are arranged on the surface of the annular spray pipe (105) in a circumferential array. A hollow disc (107) is fixedly arranged on the outer surface of the hollow rotating cylinder (104). The other end of the air inlet pipe (102) extends into the hollow disc (107). An annular opening is formed on the lower surface of the hollow disc (107). A rotating ring (108) is rotatably arranged on the inner wall of the annular opening. Mounting holes are formed on the surface of the rotating ring (108), and the outer surface of the air inlet pipe (102) is fixedly connected with the inner wall of the mounting hole. A plurality of air outlet pipes (1033) are arranged on the upper surface of the hollow disc (107) in a circumferential array. A driving motor (109) for driving the dust removal water in the processing cylinder (101) to enter the annular spray pipe (105) is fixedly arranged on the lower surface of the processing cylinder (101). A mercury removal module (200) for removing mercury in flue gas. The mercury removal module (200) includes a mounting pipe (201) fixedly arranged on the upper surface of the processing cylinder (101) and extending into the processing cylinder (101), and mercury removal resin (202) arranged in the mounting pipe (201).

2. The flue gas mercury removal and dust removal system according to claim 1, wherein Four communicating pipes (1010) are fixedly arranged on the outer surface of the top end of the hollow rotating cylinder (104) in a circumferential array. One end of each communicating pipe (1010) extends into the annular spray pipe (105), and the other end extends into the hollow rotating cylinder (104).

3. A mercury removal and dust removal system for flue gas according to claim 1, characterized in that, A driving gear disc (1011) is fixedly arranged at the output end of the driving motor (109), and a driven gear disc (1012) meshing with the driving gear disc (1011) is fixedly arranged on the outer surface of the bottom end of the hollow rotating cylinder (104).

4. A flue gas mercury removal and dust removal system according to claim 1, characterized in that, A rectangular box (1013) is fixedly arranged on the lower surface of the processing cylinder (101). A sealing plate (1014) and a rectangular plate (1015) are respectively slidably arranged on the inner wall of the rectangular box (1013). Two connecting rods (1016) are fixedly arranged between the sealing plate (1014) and the rectangular plate (1015).

5. A flue gas mercury removal and dust removal system according to claim 4, characterized in that, A reciprocating lead screw (1017) extending into the rectangular box (1013) is rotatably provided on the outer surface of the rectangular box (1013), and threaded holes threadedly connected to the outer surface of the reciprocating lead screw (1017) are formed on the surface of the rectangular plate (1015). A first bevel gear (1018) is fixedly provided at the end of the reciprocating lead screw (1017), and a driving bevel gear (1019) meshing with the first bevel gear (1018) is fixedly provided on the outer surface of the bottom end of the hollow rotating cylinder (104).

6. The flue gas mercury removal and dust removal system according to claim 5, characterized in that, A water suction pipe (1020) and a water delivery pipe (1021) are respectively provided at the ends of the rectangular box (1013). One end of the water suction pipe (1020) extends into the rectangular box (1013), and the other end of the water suction pipe (1020) extends to the inner bottom of the treatment cylinder (101). One end of the water delivery pipe (1021) extends into the rectangular box (1013), and the other end of the water delivery pipe (1021) extends into the hollow rotating cylinder (104). A rotating hole for the water delivery pipe (1021) to rotate is formed at the bottom end of the hollow rotating cylinder (104). Water suction check valves (1022) and water delivery check valves (1023) are respectively provided on the surfaces of the water suction pipe (1020) and the water delivery pipe (1021).

7. The flue gas mercury removal and dust removal system according to claim 6, characterized in that, One end of the water suction pipe (1020) located inside the treatment cylinder (101) is provided with an arc-shaped water collecting tank (1024), and an arc-shaped filter screen (1025) is provided on the inner arc surface of the arc-shaped water collecting tank (1024). A scraping plate (1026) slidably connected to the inner arc surface of the arc-shaped filter screen (1025) is fixedly provided on the lower surface of the hollow disc (107).

8. A flue gas mercury removal and dust removal system according to claim 5, characterized in that, A connecting cylinder (1028) is provided on the surface of the air inlet pipe (102), and a connecting shaft (1029) is rotatably provided on the inner wall of the air inlet pipe (102). One end of the connecting shaft (1029) extends into the connecting cylinder (1028) and is fixedly provided with a suction fan blade (1030). The other end of the connecting shaft (1029) extends to the outer surface of the air inlet pipe (102) and is fixedly provided with a second bevel gear (1031) meshing with the driving bevel gear (1019).

9. The flue gas mercury removal and dust removal system according to claim 8, characterized in that, An intercepting net plate (1032) is fixedly provided on the inner wall of the treatment cylinder (101) above the liquid level of the dust removal water, and a through hole for the hollow rotating cylinder (104) to rotate is formed on the surface of the intercepting net plate (1032). Two cutting net discs (1027) for cutting bubbles are fixedly provided on the outer surface of the hollow rotating cylinder (104).

10. A flue gas mercury removal and dust removal system according to claim 1, characterized in that, The top of the installation pipe (201) is threadedly connected with a sealing cover (203). The inner top wall of the sealing cover (203) is provided with a threaded connection ring (204), and an annular threaded groove that is threadedly connected with the threaded connection ring (204) is formed in the inner top wall of the sealing cover (203). The bottom end of the threaded connection ring (204) is fixedly provided with a mesh cylinder (205). The mercury removal resin (202) is filled inside the mesh cylinder (205). The upper surface of the sealing cover (203) is symmetrically provided with two exhaust pipes (206), and two symmetric mesh plates (207) are fixedly provided on the inner walls of the exhaust pipes (206). An operation handle is fixedly provided on the upper surface of the sealing cover (203).

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