Ozone oxidation denitration equipment for low-temperature flue gas

Abstract

The utility model provides low-temperature flue gas ozonation denitration equipment, which relates to the technical field of flue gas denitration, and comprises a barrel, a triple adsorption structure and a top cover, a water storage tank is arranged at the inner bottom of the barrel, a water receiving tank is arranged at the inner lower part of the barrel, the lower part of the left side surface of the barrel is connected with a flue gas input pipeline, and the flue gas input pipeline is connected with a flue gas outlet. A water conveying pipeline is connected to the lower portion of the right side of the barrel, a triple adsorption structure is arranged in the upper portion of the barrel in a sleeved mode, the upper end of the triple adsorption structure is covered with a top cover, the triple adsorption structure and the top cover are detachably connected with the barrel, a base is arranged at the bottom end of the barrel, and a control panel is arranged on the front side face of the barrel. And a middle filter screen is mounted at the middle part in the cylinder body. According to the utility model, flue gas and ozone are conveniently and uniformly mixed together, so that the flue gas and the ozone are more sufficiently oxidized, reduced and denitrified, NO in the flue gas is effectively converted into high-valence nitrogen oxide which is easily dissolved in water, and then harmful substances in the gas are adsorbed, so that the flue gas is safer and more reliable to discharge.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas ozone oxidation denitrification, in particular to low-temperature flue gas ozone oxidation denitrification equipment. Background Art

[0002] Flue gas from nonferrous metallurgy, chemical industry, waste-to-energy boilers, and small industrial enterprises' own boilers contains pollutants such as SO2 and NOx, which are a common source of pollution. Therefore, strict control of SO2 and NOx emissions from these boilers can effectively reduce atmospheric pollution.

[0003] In the specification of a low-temperature ozone redox denitrification device in the prior art (Announcement No. CN211677097U), it is mentioned that "it includes a gas-gas mixing reactor, an ozone-specific nozzle, an ozone generator, a liquid-phase reducing agent storage tank, a liquid-phase reduction delivery pump, a high-efficiency reduction desulfurization tower, a reduction desulfurization circulation pump, a direct exhaust chimney, a spray device, and a spoiler; a spoiler is installed inside the gas-gas mixing reactor, an ozone-specific nozzle is provided on the front side of the spoiler, and the ozone-specific nozzle is installed inside the gas-gas mixing reactor." However, the wastewater after spraying in the denitrification device in the prior art is not filtered and is directly reused, which may cause blockage, and the mixing of ozone and flue gas is not uniform, resulting in uneven redox denitrification. Utility Model Content

[0004] In order to overcome the defects of the existing technology, a low-temperature flue gas ozone oxidation denitrification equipment is now provided to solve the problem that the wastewater after spraying in the denitrification device in the existing technology is not filtered but directly reused, which may cause blockage, and the mixing of ozone and flue gas is not uniform, resulting in uneven redox denitrification.

[0005] To achieve the above-mentioned purpose, a low-temperature flue gas ozone oxidation denitrification equipment is provided, including a cylinder, a triple adsorption structure and a top cover, the inner bottom of the cylinder is provided with a water storage tank, and the lower inner part of the cylinder is provided with a water receiving tank, the lower left side of the cylinder is connected to a flue gas input pipe, and the lower right side of the cylinder is connected to a water supply pipe, the upper part of the cylinder is provided with a triple adsorption structure, and the upper end of the triple adsorption structure is covered with a top cover, and the triple adsorption structure and the top cover are both separately connected to the cylinder.

[0006] Furthermore, a base is provided at the bottom end of the cylinder, a control panel is provided on the front side of the cylinder, and a middle filter is installed in the middle of the cylinder.

[0007] Furthermore, the upper and lower parts of the left side surface of the water storage tank are respectively provided with a water inlet pipe and a drain pipe, and the lower end of the water supply pipe is connected to the lower right part of the water storage tank, and a lower connecting pipe is connected between the water receiving tank and the water storage tank, a guide groove is provided above the water receiving tank, and a lower filter screen is provided at the lower part of the guide groove.

[0008] Furthermore, a mixing chamber is provided in the middle of the flue gas input pipe, a motor is installed on the upper end of the mixing chamber, and a stirring paddle is installed at the lower end of the motor, a rotating shaft is provided on both sides of the stirring paddle, and an ozone input pipe is provided at the lower part of the mixing chamber.

[0009] Furthermore, a water pump is installed at the lower part of the water supply pipeline, and the upper end of the water supply pipeline is connected to an upper spray pipe, the front part of the upper spray pipe extends into the upper part of the cylinder body, and multiple groups of upper spray heads are provided on the upper spray pipe, and the middle part of the water supply pipeline is connected to a lower spray pipe, the lower spray pipe extends into the middle part of the cylinder body, and multiple groups of lower spray heads are installed on the lower spray pipe.

[0010] Furthermore, side fixing plates are provided on the left and right sides of the triple adsorption structure, a first screw hole is opened on the upper part of the side fixing plate, and an upper frame, a middle frame and a lower frame are provided in sequence from top to bottom in the triple adsorption structure, an ion exchange fiber adsorption layer is placed in the upper frame, a zeolite molecular sieve layer is placed in the middle frame, and an activated carbon adsorption layer is placed in the lower frame.

[0011] Furthermore, a cover plate is provided at the lower part of the top cover, and second screw holes are provided on the left and right side surfaces of the cover plate, and bolts are installed between the second screw holes and the first screw holes aligned with the same side, and an upper plate is provided on the upper inner side of the top cover, and a hanger is provided on the upper part of the upper plate, and turbo fans are installed on the left and right parts of the upper plate, and an outlet is provided at the upper end of the top cover, and the upper end of the outlet is connected to the exhaust duct.

[0012] The beneficial effects of the present invention are:

[0013] 1. In the utility model, the water delivery pipe draws clean water from the water storage tank for spraying. The sprayed water is filtered and then enters the water receiving tank. The water in the water receiving tank will be transported to the water storage tank through the lower connecting pipe for recycling, which is more economical and environmentally friendly.

[0014] 2. The mixing chamber provided in the middle of the flue gas input pipe in the present invention facilitates the mixing of flue gas and ozone, so that the flue gas and ozone are fully mixed together, thereby achieving a more complete redox reaction.

[0015] 3. The water storage tank transports cleaning water to the upper spray pipe and the lower spray pipe through the water pipeline, so that the flue gas oxidized by ozone can be sprayed and flushed through the upper spray head and the lower spray head, and NO in the flue gas can be oxidized into high-valent nitrogen oxides, thereby achieving the purpose of denitrification, which is faster and more convenient.

[0016] 4. The triple adsorption structure of the utility model is convenient for utilizing the activated carbon adsorption layer, the zeolite molecular sieve layer and the ion exchange fiber adsorption layer to adsorb harmful gases in the flue gas after denitrification, which is safer and more reliable. Moreover, the triple adsorption structure and the top cover are easy to assemble or disassemble, which is more convenient and saves trouble.

[0017] 5. The turbo fan in the top cover of the utility model will drive the air flow upward, so that the gas after denitrification and removal of harmful substances can be discharged quickly and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0019] Figure 2 A schematic cross-sectional view of an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the triple adsorption structure of an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the top cover structure of an embodiment of the present utility model.

[0022] Figure: 1. Cylinder; 10. Base; 11. Control panel; 12. Water storage tank; 13. Water inlet; 14. Drainage pipe; 15. Lower connecting pipe; 16. Water receiving tank; 17. Diversion trough; 18. Lower filter; 19. Middle filter; 2. Flue gas input pipe; 20. Ozone input pipe; 21. Motor; 22. Rotating shaft; 23. Agitator; 24. Mixing chamber; 3. Water supply pipe; 30. Upper spray pipe; 31. Upper sprinkler head; 32. Lower spray Pipe; 33. Lower sprinkler head; 34. Water pump; 4. Triple adsorption structure; 40. First screw hole; 41. Side fixing plate; 42. Upper casing; 43. Middle casing; 44. Lower casing; 45. Ion exchange fiber adsorption layer; 46. Zeolite molecular sieve layer; 47. Activated carbon adsorption layer; 5. Top cover; 50. Outlet; 51. Exhaust duct; 52. Second screw hole; 53. Bolt; 54. Hanger; 55. Upper casing; 56. Turbofan; 57. Cover plate. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the present invention. The described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0024] The specific implementation of the present utility model will be described in detail below with reference to the accompanying drawings.

[0025] Figure 1 This is a front view schematic diagram of an embodiment of the utility model, Figure 2 A cross-sectional diagram of an embodiment of the present invention is shown in FIG. Figure 3 The triple adsorption structure diagram of the embodiment of the utility model and Figure 4 This is a schematic diagram of the top cover structure of an embodiment of the present utility model.

[0026] Reference Figures 1 to 4 As shown, the utility model provides a low-temperature flue gas ozone oxidation denitrification equipment, including a cylinder 1, a triple adsorption structure 4 and a top cover 5. A water storage tank 12 is provided at the inner bottom of the cylinder 1, and a water receiving tank 16 is provided at the lower inner part of the cylinder 1. The lower left side of the cylinder 1 is connected to a flue gas input pipe 2, and the lower right side of the cylinder 1 is connected to a water supply pipe 3. The upper part of the cylinder 1 is sleeved with a triple adsorption structure 4, and the upper end of the triple adsorption structure 4 is covered with a top cover 5, and the triple adsorption structure 4 and the top cover 5 are both separately connected to the cylinder 1.

[0027] In this embodiment, a base 10 is provided at the bottom end of the cylinder 1, and a control panel 11 is provided on the front side of the cylinder 1, and a middle filter screen 19 is installed in the middle part of the cylinder 1; the upper and lower parts of the left side surface of the water storage tank 12 are respectively provided with a water inlet pipe port 13 and a drain pipe port 14, and the lower end of the water supply pipe 3 is connected to the lower right part of the water storage tank 12, and a lower connecting pipe 15 is connected between the water receiving tank 16 and the water storage tank 12; a guide groove 17 is provided above the water receiving tank 16, and a lower filter screen 18 is provided at the lower part of the guide groove 17.

[0028] As a preferred embodiment, the water supply pipe 3 in the utility model draws clean water from the water storage tank 12 for spraying. The sprayed water is filtered and enters the water receiving tank 16. The water in the water receiving tank 16 will be transported to the water storage tank 12 through the lower connecting pipe 15 for recycling, which is more economical and environmentally friendly.

[0029] In this embodiment, a mixing chamber 24 is provided in the middle of the flue gas input pipe 2, a motor 21 is installed on the upper side of the mixing chamber 24, and a stirring paddle 23 is installed at the lower end of the motor 21, and a rotating shaft 22 is provided on both sides of the stirring paddle 23, and an ozone input pipe 20 is provided at the lower part of the mixing chamber 24.

[0030] As a preferred embodiment, the mixing chamber 24 provided in the middle of the flue gas input pipe 2 of the present invention facilitates the stirring and mixing of flue gas and ozone, so that the flue gas and ozone are fully mixed together, thereby achieving a more complete redox reaction.

[0031] In this embodiment, a water pump 34 is installed at the lower part of the water supply pipe 3, and the upper end of the water supply pipe 3 is connected to the upper spray pipe 30, the front part of the upper spray pipe 30 extends into the upper part of the cylinder 1, and multiple groups of upper spray heads 31 are provided on the upper spray pipe 30, and the middle part of the water supply pipe 3 is connected to the lower spray pipe 32, the lower spray pipe 32 extends into the middle part of the cylinder 1, and multiple groups of lower spray heads 33 are installed on the lower spray pipe 32.

[0032] As a preferred embodiment, the water storage tank 12 transports cleaning water to the upper spray pipe 30 and the lower spray pipe 32 through the water supply pipe 3, so as to facilitate the spraying and flushing of the flue gas oxidized by ozone through the upper spray head 31 and the lower spray head 33, oxidizing the NO in the flue gas into high-valent nitrogen oxides, thereby achieving the purpose of denitrification, which is faster and more convenient.

[0033] In this embodiment, side fixing plates 41 are provided on both sides of the triple adsorption structure 4, a first screw hole 40 is opened on the upper part of the side fixing plate 41, and an upper casing 42, a middle casing 43 and a lower casing 44 are sequentially provided in the triple adsorption structure 4 from top to bottom, an ion exchange fiber adsorption layer 45 is sleeved in the upper casing 42, a zeolite molecular sieve layer 46 is sleeved in the middle casing 43, and an activated carbon adsorption layer 47 is sleeved in the lower casing 44.

[0034] As a preferred embodiment, the setting of the triple adsorption structure 4 of the utility model facilitates the use of the activated carbon adsorption layer 47, the zeolite molecular sieve layer 46 and the ion exchange fiber adsorption layer 45 to adsorb harmful gases in the flue gas after denitrification, which is safer and more reliable. Moreover, the triple adsorption structure 4 and the top cover 5 are easy to assemble or disassemble, which is more convenient and saves trouble.

[0035] In this embodiment, a cover plate 57 is provided at the lower portion of the top cover 5, and second screw holes 52 are provided on the left and right side surfaces of the cover plate 57. Bolts 53 are installed between the second screw holes 52 and the first screw holes 40 aligned with the same side, and an upper plate 55 is provided on the inner side of the upper portion of the top cover 5, a hanger 54 is provided on the upper portion of the upper plate 55, and turbo fans 56 are installed on the left and right portions of the upper plate 55, and an outlet 50 is provided at the upper end of the top cover 5, and the upper end of the outlet 50 is connected to the exhaust duct 51.

[0036] As a preferred embodiment, the turbo fan 56 in the top cover 5 of the utility model will drive the air flow upward, so as to facilitate the quick and convenient discharge of the gas after denitrification and removal of harmful substances.

[0037] The utility model can effectively solve the problems in the prior art that waste water after spraying by the denitrification device is not filtered but directly reused, which may cause blockage, and the uneven mixing of ozone and flue gas, resulting in uneven redox denitrification. The utility model facilitates the uniform mixing of flue gas and ozone, making its redox denitrification more complete, effectively converting NO in the flue gas into high-valent nitrogen oxides that are easily soluble in water, and then adsorbing harmful substances in the gas, making its emission safer and more reliable.

[0038] The above embodiments are used to illustrate the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the scope of protection of the present invention.

Claims

1. A low-temperature flue gas ozone oxidation denitrification device, characterized by: The invention comprises a cylinder (1), a triple adsorption structure (4) and a top cover (5); a water storage tank (12) is provided at the inner bottom of the cylinder (1), and a water receiving tank (16) is provided at the inner lower part of the cylinder (1); a smoke input pipe (2) is connected to the lower left side of the cylinder (1), and a water supply pipe (3) is connected to the lower right side of the cylinder (1); a triple adsorption structure (4) is sleeved in the upper part of the cylinder (1), and the upper end of the triple adsorption structure (4) is covered with a top cover (5); and the triple adsorption structure (4) and the top cover (5) are both detachably connected to the cylinder (1).

2. The low-temperature flue gas ozone oxidation denitrification equipment according to claim 1, characterized in that: The bottom end of the cylinder (1) is provided with a base (10), the front side of the cylinder (1) is provided with a control panel (11), and a middle filter (19) is installed in the middle of the cylinder (1).

3. The low-temperature flue gas ozone oxidation denitrification equipment according to claim 1, characterized in that: The water storage tank (12) is provided with a water inlet (13) and a water outlet (14) at the upper and lower parts of the left side surface, respectively. The lower end of the water delivery pipe (3) is connected to the lower right part of the water storage tank (12). A lower connecting pipe (15) is connected between the water receiving tank (16) and the water storage tank (12). A guide groove (17) is provided above the water receiving tank (16), and a lower filter screen (18) is provided at the lower part of the guide groove (17).

4. The low-temperature flue gas ozone oxidation denitrification equipment according to claim 1, characterized in that: A mixing chamber (24) is provided in the middle of the flue gas input pipe (2), a motor (21) is installed on the upper end of the mixing chamber (24), a stirring paddle (23) is installed at the lower end of the motor (21), rotating shafts (22) are provided on both the left and right sides of the stirring paddle (23), and an ozone input pipe (20) is provided at the lower part of the mixing chamber (24).

5. The low-temperature flue gas ozone oxidation denitrification equipment according to claim 1, characterized in that: A water pump (34) is installed at the lower part of the water delivery pipe (3), and an upper spray pipe (30) is connected to the upper end of the water delivery pipe (3), the front part of the upper spray pipe (30) extends into the upper part of the cylinder (1), and a plurality of upper spray heads (31) are provided on the upper spray pipe (30), and a lower spray pipe (32) is connected to the middle part of the water delivery pipe (3), the lower spray pipe (32) extends into the middle part of the cylinder (1), and a plurality of lower spray heads (33) are installed on the lower spray pipe (32).

6. The low-temperature flue gas ozone oxidation denitrification equipment according to claim 1, characterized in that: The triple adsorption structure (4) is provided with side fixing plates (41) on both left and right sides, and a first screw hole (40) is provided on the upper portion of the side fixing plates (41). The triple adsorption structure (4) is provided with an upper casing (42), a middle casing (43) and a lower casing (44) in sequence from top to bottom. The upper casing (42) is provided with an ion exchange fiber adsorption layer (45), the middle casing (43) is provided with a zeolite molecular sieve layer (46), and the lower casing (44) is provided with an activated carbon adsorption layer (47).

7. The low-temperature flue gas ozone oxidation denitrification equipment according to claim 1, characterized in that: A cover plate (57) is provided at the lower portion of the top cover (5), and second screw holes (52) are provided on both left and right side surfaces of the cover plate (57), and bolts (53) are installed between the second screw holes (52) and the first screw holes (40) aligned on the same side. An upper cover plate (55) is provided on the inner side of the upper portion of the top cover (5), and a hanger (54) is provided on the upper portion of the upper cover plate (55). Turbofans (56) are installed on both left and right portions of the upper cover plate (55), and an outlet (50) is provided at the upper end of the top cover (5), and an exhaust pipe (51) is connected to the upper end of the outlet (50).

Images