Glass-melting furnace flue gas denitration device

Abstract

The application discloses a glass-melting-furnace flue gas denitration device, which comprises a denitration box, a filter box is fixed to the top of the denitration box, filter screens are fixed between the inner walls of the filter box, and a flue gas dispersing mechanism for uniformly dispersing flue gas is arranged in the filter box; the flue gas dispersing mechanism comprises a rotating rod rotatably connected between the inner walls of the filter box, and rotating wheels are fixed to the rotating rod. The application relates to the technical field of glass manufacturing. The glass-melting-furnace flue gas denitration device is characterized in that the flue gas dispersing mechanism is arranged, the flue gas introduced into the filter box is uniformly dispersed into the filter box through the back-and-forth reciprocating swing of the rotating plate, the flow speed of the flue gas in the filter box is accelerated through the synchronous rotation of the impeller, the filtering speed of the flue gas is further accelerated, the flue gas is more uniformly dispersed, the flue gas can be uniformly filtered on the filter screens, the flue gas is prevented from being concentrated in a certain area of the filter screens for filtering, and the filtering efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of glass manufacturing technology, specifically to a denitrification device for glass melting furnace flue gas. Background Technology

[0002] During the glass manufacturing process, the melting of materials generates a large amount of pollutants such as fumes, sulfur dioxide, and nitrogen oxides. Among these, nitrogen oxides (NOx) are one of the major air pollutants, posing a serious threat to the environment and human health. Existing flue gas denitrification devices have a short residence time for flue gas within the device, resulting in insufficient reaction time between the flue gas and the reducing agent, leading to less than ideal denitrification effects.

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

[0004] 1. When flue gas enters the feed cylinder and is filtered by the filter plate, the flue gas cannot be fully and evenly dispersed in the feed cylinder, which leads to the flue gas being concentrated in a certain area of ​​the filter plate for filtration, thus reducing the filtration efficiency.

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

[0006] To address this issue, we propose a glass melting furnace flue gas denitrification device. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a denitrification device for glass melting furnace flue gas, which solves the problems mentioned in the background art.

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

[0009] The flue gas dispersion mechanism includes a rotating rod rotatably connected to the inner wall of the filter box, a rotating wheel fixed on the rotating rod, an arc-shaped protrusion fixed on the rotating wheel, a mounting base fixed on one side of the inner wall of the filter box, a sliding groove slidably connected to the top of the mounting base, a sliding seat slidably connected inside the sliding groove, a spring fixed between one side of the sliding seat and the inner wall of the sliding groove, a horizontal plate fixed on one side of the inner wall of the filter box, a rotating fork rotatably connected to the top of the horizontal plate, an arc-shaped gear ring fixed on the rotating fork, a rack fixed on one side of the sliding seat, the rack meshing with the arc-shaped gear ring, a roller mounted on one end of the rotating fork, the roller contacting and pressing against the arc-shaped protrusion, a rotating plate rotatably connected to one side of the inner wall of the filter box via a rotating shaft, and one side of the sliding seat rotatably connected to one side of the rotating plate via a pin. An impeller is also fixed on the rotating rod.

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

[0011] Preferably, the flue gas dispersion mechanism is further provided with a cleaning component for cleaning the dust particles on the filter screen. 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 fixing plate, the motor drives the rotating rod to rotate, and a lead screw is rotatably connected between the inner wall of the filter box and the inner wall of the collection box, one end of the lead screw passing through the filter box and extending to the outside of the filter box.

[0013] Preferably, one end of the lead screw and the outer surface of the rotating rod are both fixed with pulleys, the two pulleys are connected by belt drive, a crossbar 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 both the crossbar and the lead screw passes through the cleaning plate and extends to the outside of the cleaning plate, the outer surface of the lead screw is threadedly connected to the inner surface of the cleaning plate, and the outer surface of the crossbar 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 guide pipe, the bottom end of the air guide pipe passes through the top of the denitrification box and extends into the interior of the denitrification box, and the top of the denitrification box is also connected to an air outlet pipe and a liquid hopper.

[0016] Preferably, baffles are 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] This invention provides a denitrification device for glass melting furnace flue gas. Compared with the prior art, it has the following advantages:

[0019] 1. By setting up a flue gas dispersion mechanism, the flue gas introduced into the filter box is evenly dispersed into the filter box by the back-and-forth swing of the rotating plate. At the same time, the synchronous rotation of the impeller accelerates the flow speed of the flue gas in the filter box, thereby speeding up the filtration speed of the flue gas. It also makes the flue gas dispersion more uniform, so that the flue gas can be filtered evenly on the filter screen, preventing the flue gas from concentrating in a certain area of ​​the filter screen for filtration, and greatly improving the filtration efficiency.

[0020] 2. By setting up the cleaning component, the flue gas dispersion mechanism synchronously drives the cleaning component to work, thereby pushing the dust particles on the filter screen into the collection box for collection. The dust particles can then be discharged together by opening the box cover. This prevents the dust particles from accumulating on the filter screen as the filtration time increases, which would lead to clogging and poor filtration effect, thus improving the filtration effect.

[0021] 3. By using multiple baffles arranged in a staggered, layered manner, the residence time of flue gas in the denitrification chamber is extended, thereby allowing the flue gas to fully mix and react with ammonia water to denitrify before being discharged to the outside, thus meeting emission standards. Attached Figure Description

[0022] Figure 1 This is a perspective view of the external structure of the present invention;

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

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

[0025] Figure 4 This is a perspective view of the internal structure of the filter box of the present invention;

[0026] Figure 5 This is a perspective view of the flue gas dispersion mechanism and cleaning component of the present invention;

[0027] Figure 6 For the present invention Figure 5 A magnified view of a portion of point A in the middle.

[0028] In the diagram: 1. Denitrification box; 2. Filter box; 3. Filter screen; 4. Flue gas dispersion mechanism; 5. Collection box; 7. Cleaning assembly; 8. Inlet pipe; 9. Guide pipe; 10. Outlet pipe; 11. Liquid hopper; 12. Baffle; 41. Rotating rod; 42. Rotating wheel; 43. Arc-shaped protrusion; 44. Mounting base; 45. Slide groove; 46. Slide seat; 47. Spring; 48. Horizontal 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. Fixed plate; 72. Motor; 73. Lead screw; 74. Pulley; 75. Belt; 76. Crossbar; 77. Cleaning plate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

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

[0031] Example 1

[0032] Please see Figures 1-3 A denitrification device for glass melting furnace flue gas includes a denitrification box 1, which is used to denitrify the flue gas after glass production in the glass melting furnace. 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 filter screen 3 effectively intercepts and removes large particulate impurities and some harmful substances in the flue gas, ensuring the smooth progress of the subsequent denitrification process.

[0033] A collection box 5 is connected to one side of the filter box 2. The collection box 5 is designed to facilitate the collection of filtered particles. The bottom of the collection box 5 is connected to a lid via a hinge. The lid can be locked onto the collection box 5. When it is necessary to discharge particles, the collection box 5 can be unlocked and opened to discharge the particles.

[0034] The top of the filter box 2 is connected to the air inlet pipe 8, through which external flue gas is introduced into the filter box 2 for filtration. The bottom of the filter box 2 is connected to the air guide pipe 9, which guides the flue gas, after filtering out particulate matter and impurities, into 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 into the interior of the denitrification box 1. The top of the denitrification box 1 is also connected to the air outlet pipe 10 and the liquid hopper 11. The air outlet pipe 10 discharges the treated clean gas, and the liquid hopper 11 is used to inject ammonia water required for denitrification. Ammonia water is a solution containing ammonia, and its alkaline properties allow 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. The liquid hopper 11 is equipped with a valve to control the amount of ammonia water injected, and closing the valve can also prevent the exhaust gas from being discharged from the liquid hopper 11.

[0035] Baffles 12 are fixed on both sides of the inner wall of the denitrification box 1 from top to bottom. The baffles 12 are arranged in multiple staggered layers inside the denitrification box 1. The purpose of this arrangement is to prolong the residence time of the flue gas in the denitrification box 1, so that the flue gas can be fully mixed and reacted with ammonia water for denitrification before being discharged to the outside, thus meeting the emission standards. The bottom end of the gas 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 Figures 4-6 As shown, the filter box 2 is equipped with a flue gas dispersion mechanism 4 to uniformly disperse the flue gas.

[0038] The flue gas dispersion mechanism 4 includes a rotating rod 41 rotatably connected to the inner wall of the filter box 2. A rotating wheel 42 is fixed on the rotating rod 41, and an arc-shaped protrusion 43 is fixed on the rotating wheel 42. The arc-shaped protrusion 43 is triangular in shape with a rounded apex. A mounting base 44 is fixed to one side of the inner wall of the filter box 2. A sliding groove 45 is slidably connected to the top of the mounting base 44. A sliding seat 46 is slidably connected inside the sliding groove 45. The dimensions of the sliding seat 46 and the sliding groove 45 are adapted to each other. The sliding groove 45 is designed as a dovetail groove, and the sliding seat 46 is designed as a dovetail seat, which ensures that the sliding seat 46 can only move back and forth in the sliding groove 45, thus limiting its movement. A spring 47 is fixed between one side of the sliding seat 46 and the inner wall of the sliding groove 45. The spring 47 is used to reset the sliding seat 46, allowing it to reciprocate. A horizontal plate 48 is fixed to one side of the inner wall of the filter box 2. A rotating fork 49 is rotatably connected to the top of the horizontal plate 48. An arc-shaped gear ring 410 is fixed on the rotating fork 49. 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. The roller 412 contacts and presses against the arc-shaped protrusion 43. 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. 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 on the rotating rod 41.

[0039] By using the flue gas dispersion mechanism 4, the flue gas introduced into the filter box 2 is evenly dispersed into the filter box 2 by the reciprocating swing of the rotating plate 414. At the same time, the synchronous rotation of the impeller 416 accelerates the flow speed of the flue gas in the filter box 2, thereby speeding up the filtration speed of the flue gas. It also makes the flue gas dispersion more uniform, so that the flue gas can be evenly filtered on the filter screen 3, preventing the flue gas from being concentrated in a certain area of ​​the filter screen 3 for filtration, and greatly improving the filtration efficiency.

[0040] Example 3

[0041] Based on Example 2, see Figure 5 As shown, the flue gas dispersion mechanism 4 is also equipped with a cleaning component 7 for cleaning the dust particles on the filter screen 3. The cleaning component 7 includes a fixing plate 71 fixed on one side of the filter box 2, and 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 to the top of the fixed plate 71. The motor 72 is a three-phase asynchronous motor that can rotate in both directions. It is controlled by an external switch and electrically connected to an external power supply. When the motor 72 rotates in the forward direction, it not only drives the flue gas dispersion mechanism 4 to work normally, but also drives the cleaning plate 77 to move back and forth along the crossbar 76 through the rotation of the lead screw 73. During this process, the cleaning plate 77 effectively scrapes off the dust particles accumulated on the surface of the filter screen 3 and pushes them into the collection box 5 for centralized collection. When the collection box needs to be cleaned, the dust particles can be discharged by simply opening the box cover. The maintenance process is extremely simple. In addition, the reverse function design of the motor 72 ensures that the normal operation of the flue gas dispersion mechanism 4 will not be interfered with 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 screen and reduces maintenance costs. The motor 72 drives the rotating rod 41 to rotate. The lead screw 73 is rotatably connected between the inner wall of the filter box 2 and the inner wall of the collection box 5. One end of the lead screw 73 passes through the filter box 2 and extends to the outside of the filter box 2.

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

[0044] One end of both the crossbar 76 and the lead screw 73 passes through the cleaning plate 77 and extends to the outside of the cleaning plate 77. The outer surface of the lead screw 73 is threadedly connected to the inner surface of the cleaning plate 77, and the outer surface of the crossbar 76 is slidably connected to the inner surface of the cleaning plate 77.

[0045] By using the cleaning component 7, the flue gas dispersion mechanism 4 synchronously drives the cleaning component 7 to work, thereby pushing the dust particles on the filter screen 3 into the collection box 5 for collection. The dust particles can then be discharged together by opening the box cover. This prevents the dust particles from accumulating on the filter screen 3 as the filtration time increases, which would otherwise cause the filter screen 3 to become clogged and the filtration effect to deteriorate, thus improving the filtration effect.

[0046] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0047] During operation, flue gas is poured into the filter box 2 through the intake pipe 8. The filter screen 3 filters out particulate matter from the flue gas. Then, the motor 72 is activated, causing the rotating rod 41 to rotate. The rotating rod 41 then rotates the rotating wheel 42. Simultaneously, the arc-shaped protrusion 43 on the rotating wheel 42 rotates, driving the rotating fork 49 to rotate. The rotating fork 49 then causes the slide block 46 to slide within the sliding groove 45. At the same time, the spring 47 holds the slide block 46 in place, allowing it to reciprocate within the sliding groove 45. This reciprocating movement of the slide block 46 drives the rotating plate 414 to rotate back and forth, resulting in the flue gas being evenly discharged back and forth, thus dispersing the flue gas evenly within the filter box 2. When the rotating rod 41 rotates, it drives the impeller 416 to rotate. The impeller 416 further disperses the flue gas more evenly in the filter box 2. When the rotating rod 41 rotates, it drives the lead screw 73 to rotate simultaneously. In turn, the lead screw 73 drives the cleaning plate 77 to move forward. During the movement, the particles on the top of the filter screen 3 are pushed into the collection box 5. Opening the box cover allows the flue gas particles to be discharged to achieve cleaning. Ammonia water is then added to the denitrification box 1 through the liquid hopper 11. The flue gas then enters the denitrification box 1 through the air guide pipe 9 and reacts fully with the ammonia water to achieve denitrification. With the setting of multiple baffles 12, the contact reaction time with the ammonia water is extended. Finally, after denitrification is completed, the flue gas is discharged through the exhaust pipe 10.

[0048] The embodiments of the invention have been described in detail above, but the content described is only a preferred embodiment of the invention and should not be considered as limiting the scope of the invention. All equivalent changes and improvements made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A glass-melting-furnace flue-gas denitration device comprising a denitration box (1), characterized in that: The top of the denitration box (1) is fixed with a filter box (2), the inner wall of the filter box (2) is fixed with a filter screen (3), and the inside of the filter box (2) is provided with a flue gas dispersion mechanism (4) for uniformly dispersing flue gas. The flue gas dispersion mechanism (4) comprises a rotating shaft (41) rotatably connected between the inner wall of the filter box (2), a rotating wheel (42) fixed on the rotating shaft (41), an arc-shaped protrusion (43) fixed on the rotating wheel (42), an installation seat (44) fixed on one side of the inner wall of the filter box (2), a sliding groove (45) slidably connected to the top of the installation seat (44), a sliding seat (46) slidably connected in the sliding groove (45), a spring (47) fixed between one side of the sliding seat (46) and the inner wall of the sliding groove (45), a horizontal plate (48) fixed on one side of the inner wall of the filter box (2), a rotating fork (49) rotatably connected to the top of the horizontal plate (48), an arc-shaped gear ring (410) fixed on the rotating fork (49), a rack (411) fixed on one side of the sliding seat (46), the rack (411) engaged with the arc-shaped gear ring (410), a roller (412) installed on one end of the rotating fork (49), the roller (412) in contact with and extruded by the arc-shaped protrusion (43), a rotating plate (414) rotatably connected to one side of the inner wall of the filter box (2) through a rotating shaft (413), one side of the sliding seat (46) rotatably connected to one side of the rotating plate (414) through a pin shaft (415), and an impeller (416) fixed on the rotating shaft (41). The flue gas dispersion mechanism (4) is further provided with a cleaning assembly (7) for cleaning the dust particles of the filter screen (3), the cleaning assembly (7) comprises a fixed plate (71) fixed on one side of the filter box (2), and one end of the rotating shaft (41) penetrates through the filter box (2) and extends to the outside of the filter box (2). The top of the fixed plate (71) is fixed with a motor (72), the motor (72) drives the rotating shaft (41) to rotate, a lead screw (73) is rotatably connected between the inner wall of the filter box (2) and the inner wall of the collecting box (5), one end of the lead screw (73) penetrates through the filter box (2) and extends to the outside of the filter box (2); One end of the lead screw (73) and the outer surface of the rotating shaft (41) are both fixed with a belt pulley (74), the two belt pulleys (74) are drivingly connected through a belt (75), a horizontal rod (76) is fixed between the inner wall of the filter box (2) and the inner wall of the collecting box (5), and the top of the filter screen (3) is slidably connected with a cleaning plate (77); One end of the horizontal rod (76) and the lead screw (73) penetrates through the cleaning plate (77) and extends to the outside of the cleaning plate (77), the outer surface of the lead screw (73) is threadedly connected with the inner surface of the cleaning plate (77), and the outer surface of the horizontal rod (76) is slidably connected with the inner surface of the cleaning plate (77).

2. The glass-melting-furnace flue-gas denitration device according to claim 1, characterized in that: One side of the filter box (2) is communicated with a collecting box (5), and the bottom of the collecting box (5) is rotatably connected with a box cover through a hinge.

3. The glass-melting-furnace flue-gas denitration device according to claim 1, characterized in that: The top of the filter box (2) is communicated with an air inlet pipe (8), the bottom of the filter box (2) is communicated with an air guide pipe (9), the bottom end of the air guide pipe (9) penetrates through the top of the denitration box (1) and extends to the inside of the denitration box (1), the top of the denitration box (1) is also communicated with an air outlet pipe (10) and a liquid bucket (11).

4. The glass-melting-furnace flue-gas denitration device according to claim 3, characterized in that: The two sides of the inner wall of the denitration box (1) are fixed with baffles (12) staggered from top to bottom, the bottom end of the air guide pipe (9) penetrates through the baffle (12) and extends to the bottom of the baffle (12).

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