Flue gas denitration device for glass melting furnace

Abstract

The invention discloses a glass melting furnace flue gas denitration device which comprises a denitration box, a filter box is fixed at the top of the denitration box, a filter screen is fixed between the inner walls of the filter box, and a flue gas dispersion mechanism for uniformly dispersing flue gas is arranged in the filter box; and the smoke dispersing mechanism comprises a rotating rod rotationally connected between the inner walls of the filter box, and a rotating wheel is fixed to the rotating rod. According to the flue gas denitration device for the glass melting furnace, flue gas guided into the filter box is uniformly dispersed into the filter box through the arrangement of the flue gas dispersion mechanism and the back-and-forth reciprocating swing of a rotating plate, and meanwhile, the flowing speed of the flue gas in the filter box is increased through the synchronous rotation of an impeller, so that the filtering speed of the flue gas is increased; meanwhile, the flue gas is further dispersed more uniformly, so that the flue gas can be uniformly filtered on the filter screen, the flue gas is prevented from being concentrated in a certain area of the filter screen to be filtered, and the filtering efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of glass manufacturing, in particular to a flue gas denitrification device for a glass melting furnace. Background Art

[0002] In the production process of glass products, the melting process of materials will produce a large amount of pollutants such as smoke, sulfur dioxide and nitrogen oxides. Among them, nitrogen oxides (NOx) are one of the main air pollutants, posing a serious threat to the environment and human health. In the existing flue gas denitrification device, the flue gas stays in the device for a short time, and the time for the flue gas to react with the reducing agent is insufficient, resulting in the denitrification effect of the device is not very ideal.

[0003] The Chinese patent application with publication number CN116116136A discloses a flue gas denitrification device and a flue gas denitrification method. The patent application solves the problem of insufficient contact between flue gas and reducing agent and poor denitrification effect, but still has the following shortcomings:

[0004] 1. When the flue gas enters the feed barrel and is filtered by the filter plate, the flue gas cannot be fully and evenly dispersed in the feed barrel, which causes the flue gas to be concentrated in a certain area of ​​the filter plate for filtration, resulting in a decrease in filtration efficiency;

[0005] 2. Although a cleaning rod is set on the filter plate to clean the smoke particles, as the filtered smoke particles accumulate on the filter plate, if they are not removed from the filter plate, the overall filtering efficiency of the filter plate will be affected;

[0006] In this regard, we proposed a glass melting furnace flue gas denitrification device to solve the above problems. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a glass melting furnace flue gas denitrification device, which solves the problems raised in the background technology.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: A glass melting furnace flue gas denitration device, comprising a denitration box, a filter box is fixed on the top of the denitration box, a filter screen is fixed between the inner walls of the filter box, and a flue gas dispersion mechanism for uniformly dispersing the flue gas is arranged inside the filter box;

[0009] The cam is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is meshed with the toothed plate. A roller is installed at one end of the rotary fork, and the roller contacts with the toothed plate and is pressed against the toothed plate. A rotary plate is rotatably connected to the rotary plate on one side of the inner wall of the filter box through a rotary shaft, and one side of the slide seat is rotatably connected to one side of the rotary plate through a pin shaft. An impeller is also fixed on the rotary rod.

[0010] Preferably, one side of the filter box is connected to a collection box, and the bottom of the collection box is rotatably connected to a box cover via a hinge.

[0011] Preferably, the smoke dispersion mechanism is also provided with a cleaning component for cleaning smoke particles on the filter screen, and the cleaning component includes a fixing plate fixed to one side of the filter box, and one end of the rotating rod passes through the filter box and extends to the outside of the filter box.

[0012] Preferably, a motor is fixed to the top of the fixed plate, and the motor drives the rotating rod to rotate. A screw rod is rotatably connected between the inner wall of the filter box and the inner wall of the collection box, and one end of the screw rod passes through the filter box and extends to the outside of the filter box.

[0013] Preferably, a pulley is fixed to one end of the screw rod and the outer surface of the rotating rod, the two pulleys are connected by a belt drive, a cross bar is fixed between the inner wall of the filter box and the inner wall of the collection box, and a cleaning plate is slidably connected to the top of the filter screen.

[0014] Preferably, one end of the cross rod and the screw rod both penetrate the cleaning plate and extend to the outside of the cleaning plate, the outer surface of the screw rod is threadedly connected to the inner surface of the cleaning plate, and the outer surface of the cross rod is slidably connected to the inner surface of the cleaning plate.

[0015] Preferably, the top of the filter box is connected to an air inlet pipe, the bottom of the filter box is connected to an air duct, the bottom end of the air duct passes through the top of the denitrification box and extends to the interior of the denitrification box, and the top of the denitrification box is also connected to an air outlet pipe and a liquid bucket.

[0016] Preferably, baffles are staggered and fixed on both sides of the inner wall of the denitrification box from top to bottom, and the bottom end of the air guide pipe passes through the baffle and extends to the bottom of the baffle.

[0017] Beneficial Effects

[0018] The present invention provides a glass melting furnace flue gas denitrification device. Compared with the prior art, it has the following beneficial effects:

[0019] 1. Through the setting of the smoke dispersion mechanism, the smoke introduced into the filter box is evenly dispersed into the filter box by the reciprocating swing of the rotating plate. At the same time, the synchronous rotation of the impeller accelerates the flow speed of the smoke in the filter box, thereby accelerating the filtering speed of the smoke. At the same time, the smoke is further dispersed more evenly, so that the smoke can be evenly filtered on the filter, preventing the smoke from being concentrated in a certain area of ​​the filter for filtering, and greatly improving the filtering efficiency.

[0020] 2. Through the setting of the cleaning component, the smoke dispersion mechanism is used to synchronously drive the cleaning component to work, and then the smoke particles on the filter are pushed into the collection box for collection, and then the box cover is opened to discharge them together, preventing the smoke particles from gathering more and more on the filter as the filtering time increases, thereby causing the filter to become blocked and the filtering effect to deteriorate, thereby improving the filtering effect.

[0021] 3. The staggered arrangement of multiple baffles prolongs the retention time of flue gas in the denitrification box, so that the flue gas and ammonia water are fully mixed and denitrified before being discharged to the outside, thus meeting the emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the external structure of the present invention;

[0023] Figure 2 It is a cross-sectional view of the denitration box and the filter box of the present invention;

[0024] Figure 3 This is a front view of the internal structure of the denitration box and the filter box of the present invention;

[0025] Figure 4 It is a three-dimensional diagram of the internal structure of the filter box of the present invention;

[0026] Figure 5 A three-dimensional diagram of the smoke dispersion mechanism and cleaning assembly of the present invention;

[0027] Figure 6 For the present invention Figure 5 A partial enlarged view of point A in the middle.

[0028] In the figure: 1. denitrification box; 2. filter box; 3. filter screen; 4. smoke dispersion mechanism; 5. collection box; 7. cleaning component; 8. air inlet pipe; 9. air guide pipe; 10. air outlet pipe; 11. liquid bucket; 12. baffle; 41. rotating rod; 42. rotating wheel; 43. arc-shaped protrusion; 44. mounting seat; 45. slide groove; 46. sliding seat; 47. spring; 48. cross plate; 49. rotating fork; 410. arc-shaped gear ring; 411. rack; 412. roller; 413. rotating shaft; 414. rotating plate; 415. pin shaft; 416. impeller; 71. fixing plate; 72. motor; 73. screw rod; 74. pulley; 75. belt; 76. cross bar; 77. cleaning plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The present invention provides three technical solutions, including the following embodiments:

[0031] Example 1

[0032] See also Figure 1-Figure 3 A glass melting furnace flue gas denitrification device includes a denitrification box 1, which is used to denitrify the flue gas after the glass melting furnace produces glass. A filter box 2 is fixed on the top of the denitrification box 1, and a filter screen 3 is fixed between the inner walls of the filter box 2. The setting of the filter screen 3 effectively intercepts and removes large particle impurities and some harmful substances in the flue gas, ensuring the smooth progress of the subsequent denitrification process.

[0033] One side of the filter box 2 is connected to a collection box 5, which is provided to facilitate the collection of filtered particulate matter. The bottom of the collection box 5 is rotatably connected to a box cover by a hinge, and the box cover can be locked on the collection box 5. When the particulate matter needs to be discharged, the collection box 5 can be unlocked and opened to discharge the particulate matter.

[0034] The top of the filter box 2 is connected with an air inlet pipe 8, and the external flue gas is introduced into the filter box 2 for filtration through the air inlet pipe 8. The bottom of the filter box 2 is connected with an air guide pipe 9, which guides the flue gas with particulate matter and impurities filtered out to the inside of the denitrification box 1 for deep denitrification treatment. The bottom end of the air guide pipe 9 passes through the top of the denitrification box 1 and extends to the inside of the denitrification box 1. The top of the denitrification box 1 is also connected with an air outlet pipe 10 and a liquid bucket 11. The air outlet pipe 10 discharges the treated clean gas. The liquid bucket 11 is used to inject ammonia water required for denitrification. Ammonia water is a solution containing ammonia. Its alkaline properties enable it to participate in chemical reactions as a reducing agent. In the denitrification process, ammonia water mainly plays the role of reducing nitrogen oxides (mainly NO and NO2) in the flue gas into harmless nitrogen and water. A valve is provided in the liquid bucket 11 to control the amount of ammonia water injected, and closing the valve can also prevent the gas from being discharged from the liquid bucket 11 when it is discharged.

[0035] Baffles 12 are staggered and fixed on both sides of the inner wall of the denitrification box 1 from top to bottom. The baffles 12 are staggered in multiple layers in the denitrification box 1. The purpose of this arrangement is to extend the residence time of the flue gas in the denitrification box 1, so that the flue gas and ammonia water are fully mixed and reacted for denitrification before being discharged to the outside to meet the emission standards. The bottom end of the air guide pipe 9 passes through the baffle 12 and extends to the bottom of the baffle 12.

[0036] Example 2

[0037] Based on Example 1, see Figure 4-Figure 6 As shown, a smoke dispersion mechanism 4 for evenly dispersing smoke is provided inside the filter box 2;

[0038] The smoke dispersion mechanism 4 includes a rotating rod 41 rotatably connected between the inner walls of the filter box 2, a rotating wheel 42 is fixed on the rotating rod 41, an arc-shaped protrusion 43 is fixed on the rotating wheel 42, the arc-shaped protrusion 43 is in an arc-shaped triangle, and the top angle part is in a smooth arc shape, a mounting seat 44 is fixed on one side of the inner wall of the filter box 2, a slide groove 45 is slidably connected to the top of the mounting seat 44, a slide seat 46 is slidably connected inside the slide groove 45, the slide seat 46 is adapted to the size of the slide groove 45, the slide groove 45 is designed as a dovetail groove, and the slide seat 46 is designed as a dovetail seat, which can ensure that the slide seat 46 can only move forward and backward in the slide groove 45 for limiting, a spring 47 is fixed between one side of the slide seat 46 and the inner wall of the slide groove 45, and the setting of the spring 47 is used to reset the slide seat 46 so that the slide seat 46 can move back and forth, A horizontal plate 48 is fixed to one side of the inner wall of the filter box 2, and a rotating fork 49 is rotatably connected to the top of the horizontal plate 48. An arc-shaped gear ring 410 is fixed to the rotating fork 49, and a rack 411 is fixed to one side of the slide 46. The rack 411 meshes with the arc-shaped gear ring 410. As the rotating fork 49 swings, the arc-shaped gear ring 410 drives the rack 411 to move back and forth. A roller 412 is installed at one end of the rotating fork 49, and the roller 412 contacts and squeezes the arc-shaped protrusion 43. The setting of the arc-shaped protrusion 43 can drive the roller 412 and the rotating fork 49 to rotate intermittently. A rotating plate 414 is rotatably connected to one side of the inner wall of the filter box 2 through a rotating shaft 413, and one side of the slide 46 is rotatably connected to one side of the rotating plate 414 through a pin 415. An impeller 416 is also fixed to the rotating rod 41.

[0039] By setting up the smoke dispersion mechanism 4 and utilizing the reciprocating swing of the rotating plate 414, the smoke introduced into the filter box 2 is evenly dispersed into the filter box 2. At the same time, the synchronous rotation of the impeller 416 accelerates the flow speed of the smoke in the filter box 2, thereby accelerating the filtering speed of the smoke. At the same time, the smoke is further evenly dispersed, so that the smoke can be evenly filtered on the filter screen 3, preventing the smoke from being concentrated in a certain area of ​​the filter screen 3 for filtering, thereby greatly improving the filtering efficiency.

[0040] Example 3

[0041] Based on Example 2, see Figure 5 As shown, the smoke dispersion mechanism 4 is also provided with a cleaning component 7 for cleaning the smoke particles on the filter screen 3. The cleaning component 7 includes a fixing plate 71 fixed to one side of the filter box 2. One end of the rotating rod 41 passes through the filter box 2 and extends to the outside of the filter box 2.

[0042] A motor 72 is fixed on the top of the fixed plate 71. The motor 72 is a three-phase asynchronous motor that can rotate forward and reverse, is controlled by an external switch, and is electrically connected to an external power supply. When the motor 72 rotates forward, it not only drives the smoke dispersion mechanism 4 to work normally, but also drives the cleaning plate 77 to reciprocate along the direction of the cross bar 76 through the rotation of the screw rod 73. In this process, the cleaning plate 77 effectively scrapes off the smoke particles accumulated on the surface of the filter 3 and pushes them into the collection box 5 for centralized collection. When the collection box needs to be cleaned, the smoke particles can be discharged together by simply opening the box cover. The maintenance process is extremely simple. In addition, the reversing function design of the motor 72 does not interfere with the normal operation of the smoke dispersion mechanism 4 when the cleaning component 7 is reset, ensuring the efficient and stable operation of the entire denitrification device. This design not only improves the automation level of the equipment, but also significantly extends the service life of the filter and reduces the maintenance cost. The motor 72 drives the rotating rod 41 to rotate, and the inner wall of the filter box 2 is rotatably connected to the inner wall of the collection box 5 with a screw rod 73. One end of the screw rod 73 passes through the filter box 2 and extends to the outside of the filter box 2.

[0043] A pulley 74 is fixed to one end of the screw rod 73 and the outer surface of the rotating rod 41. The two pulleys 74 are connected by a belt 75. A cross bar 76 is fixed between the inner wall of the filter box 2 and the inner wall of the collecting box 5. A cleaning plate 77 is slidably connected to the top of the filter screen 3.

[0044] One end of the cross bar 76 and the screw rod 73 both penetrate the cleaning plate 77 and extend to the outside of the cleaning plate 77. The outer surface of the screw rod 73 is threadedly connected to the inner surface of the cleaning plate 77, and the outer surface of the cross bar 76 is slidably connected to the inner surface of the cleaning plate 77.

[0045] By setting up the cleaning component 7, the smoke dispersion mechanism 4 is used to synchronously drive the cleaning component 7 to work, and then the smoke dust particles on the filter 3 are pushed into the collecting box 5 for collection, and then the box cover is opened to discharge them together, thereby preventing the smoke dust particles from gathering more and more on the filter 3 as the filtering time increases, thereby preventing the filter 3 from being blocked and the filtering effect from being deteriorated, thereby improving the filtering effect.

[0046] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0047] During operation, the smoke is poured into the filter box 2 through the air inlet pipe 8, and the particulate matter in the smoke is filtered by the filter screen 3. The motor 72 is further started to drive the rotating rod 41 to rotate, and the rotating rod 41 drives the rotating wheel 42 to rotate. The arc-shaped protrusion 43 on the rotating wheel 42 drives the rotating fork 49 to rotate while rotating, and then the rotating fork 49 drives the slide 46 to slide in the slide groove 45. At the same time, the spring 47 keeps the slide 46 to reset, so that the slide 46 reciprocates in the slide groove 45. When the slide 46 reciprocates, it drives the rotating plate 414 to reciprocate, so that the smoke is discharged back and forth evenly, so that the smoke is evenly dispersed in the filter box 2. When the rotating rod 41 rotates, it drives the impeller 416 to rotate, and the impeller 416 further makes the flue gas more evenly dispersed in the filter box 2. When the rotating rod 41 rotates, it drives the screw rod 73 to rotate synchronously, and then the screw rod 73 drives the cleaning plate 77 to move forward. During the movement, the particulate matter on the top of the filter 3 is pushed into the collecting box 5. The box cover is opened, and the flue gas particulate matter can be discharged to achieve cleaning. Ammonia water is further added to the denitrification box 1 through the liquid bucket 11, and the flue gas enters the denitrification box 1 through the air guide pipe 9, and is fully contacted with the ammonia water for denitrification. Under the setting of multiple baffles 12, the contact reaction time with the ammonia water is extended, and finally the flue gas is discharged through the outlet pipe 10 after the denitrification is completed.

[0048] The above embodiments of the invention are described in detail, but the contents are only preferred embodiments of the invention and cannot be considered to limit the scope of the invention. All equivalent changes and improvements made within the scope of the invention should still fall within the scope of the invention.

Claims

1. A glass melting furnace flue gas denitrification device, comprising a denitrification box (1), characterized in that: A filter box (2) is fixed on the top of the denitration box (1), a filter screen (3) is fixed between the inner walls of the filter box (2), and a smoke dispersion mechanism (4) for uniformly dispersing smoke is provided inside the filter box (2); The smoke dispersion mechanism (4) comprises a rotating rod (41) rotatably connected between the inner walls of the filter box (2), a rotating wheel (42) being fixed on the rotating rod (41), an arc-shaped protrusion (43) being fixed on the rotating wheel (42), a mounting seat (44) being fixed on one side of the inner wall of the filter box (2), a slide groove (45) being slidably connected to the top of the mounting seat (44), a slide seat (46) being slidably connected inside the slide groove (45), a spring (47) being fixed between one side of the slide seat (46) and the inner wall of the slide groove (45), a transverse plate (48) being fixed on one side of the inner wall of the filter box (2), the top of the transverse plate (48) being rotatably connected to the top of the slide groove (45), A rotating fork (49) is connected, an arc-shaped gear ring (410) is fixed on the rotating fork (49), a rack (411) is fixed on one side of the sliding seat (46), the rack (411) is meshed with the arc-shaped gear ring (410), a roller (412) is installed on one end of the rotating fork (49), the roller (412) is in contact and extrusion with the arc-shaped protrusion (43), one side of the inner wall of the filter box (2) is rotatably connected to a rotating plate (414) via a rotating shaft (413), one side of the sliding seat (46) is rotatably connected to one side of the rotating plate (414) via a pin shaft (415), and an impeller (416) is also fixed on the rotating rod (41).

2. A glass melting furnace flue gas denitrification device according to claim 1, characterized in that: One side of the filter box (2) is connected to a collection box (5), and the bottom of the collection box (5) is rotatably connected to a box cover via a hinge.

3. A glass melting furnace flue gas denitrification device according to claim 1, characterized in that: The smoke dispersion mechanism (4) is also provided with a cleaning assembly (7) for cleaning smoke particles on the filter screen (3); the cleaning assembly (7) comprises a fixing plate (71) fixed to one side of the filter box (2); one end of the rotating rod (41) penetrates the filter box (2) and extends to the outside of the filter box (2).

4. A glass melting furnace flue gas denitrification device according to claim 3, characterized in that: A motor (72) is fixed to the top of the fixing plate (71), and the motor (72) drives the rotating rod (41) to rotate. A screw rod (73) is rotatably connected between the inner wall of the filter box (2) and the inner wall of the collection box (5), and one end of the screw rod (73) passes through the filter box (2) and extends to the outside of the filter box (2).

5. A glass melting furnace flue gas denitrification device according to claim 4, characterized in that: A pulley (74) is fixed to one end of the screw rod (73) and the outer surface of the rotating rod (41); the two pulleys (74) are connected to each other by a belt (75); a cross bar (76) is fixed between the inner wall of the filter box (2) and the inner wall of the collection box (5); and a cleaning plate (77) is slidably connected to the top of the filter screen (3).

6. A glass melting furnace flue gas denitrification device according to claim 5, characterized in that: One end of the cross bar (76) and the screw rod (73) both penetrate the cleaning plate (77) and extend to the outside of the cleaning plate (77); the outer surface of the screw rod (73) is threadedly connected to the inner surface of the cleaning plate (77); and the outer surface of the cross bar (76) is slidably connected to the inner surface of the cleaning plate (77).

7. A glass melting furnace flue gas denitrification device according to claim 1, characterized in that: The top of the filter box (2) is connected to an air inlet pipe (8), the bottom of the filter box (2) is connected to an air guide pipe (9), the bottom end of the air guide pipe (9) passes through the top of the denitrification box (1) and extends to the interior of the denitrification box (1), and the top of the denitrification box (1) is also connected to an air outlet pipe (10) and a liquid hopper (11).

8. A glass melting furnace flue gas denitrification device according to claim 7, characterized in that: Baffles (12) are staggered and fixed on both sides of the inner wall of the denitration box (1) from top to bottom, and the bottom end of the air guide pipe (9) penetrates the baffle (12) and extends to the bottom of the baffle (12).

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