Ammonia spraying device of glass production flue gas denitration system

Abstract

The utility model relates to the technical field of glass production flue gas treatment, and provides an ammonia spraying device of a glass production flue gas denitration system, which comprises a flue gas denitration tower, the bottom of the flue gas denitration tower is provided with a flue gas inlet, the outer wall of the flue gas denitration tower is fixedly connected with a flue gas exhaust pipe, an ammonia conveying pipe is arranged in the flue gas denitration tower, and the ammonia conveying pipe is connected with the flue gas denitration tower. One end of the ammonia conveying pipe is fixedly connected with a flow dividing pipe, the top of the flow dividing pipe is provided with a spray head, and the inner wall of the flue gas denitration tower is fixedly connected with a flow guide plate. Ammonia water is injected into one end of the ammonia conveying pipe by starting the valve and is sprayed out through the sprayers mounted at the top of the shunting pipe, when flue gas rises into the flue gas denitration tower through the flue gas inlet, the sprayed ammonia water can be in contact with the flue gas, and the spraying range of the ammonia water can be widened due to the fact that the sprayers are distributed on the outer wall of the shunting pipe at equal intervals. The ammonia water can be in full contact with the flue gas, so that the flue gas denitration treatment quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to glass production flue gas treatment technical field especially relates to a kind of ammonia injection device of glass production flue gas denitration system. BACKGROUND

[0002] Glass production boiler is usually with coal, natural gas, fuel oil etc. as fuel. Fuel burns in furnace, releases a large amount of heat energy, makes the water in boiler heated vaporization, produces high-temperature high-pressure steam or hot water. These steam or hot water are transported to each process of glass production by pipeline, boiler will produce a large amount of flue gas in use, in glass production, commonly used selective catalytic reduction method or selective non-catalytic reduction method is carried out flue gas denitration. Ammonia injection device sprays ammonia into flue gas containing nitrogen oxides, under catalyst or specific temperature condition, ammonia and nitrogen oxides occur oxidation-reduction reaction, generate nitrogen and water, thereby reduce the content of nitrogen oxides in flue gas, reach environmental protection emission requirement;

[0003] For this, the patent with the authorization announcement No.CN212017376U discloses a kind of for flue gas denitration ammonia injection device, including processing box, liquid discharge pipe, spray tray, cover plate, ammonia pipe and connecting column;First baffle and second baffle are arranged in parallel in processing box, and the inside of processing box is divided into first hollow warehouse, second hollow warehouse and third hollow warehouse from bottom to top in sequence;First baffle is equipped with first through-hole;Second baffle is equipped with second through-hole;The air outlet end of air extractor is connected to the air inlet hole of first hollow warehouse in the side end face of processing box;The liquid discharge hole of first hollow warehouse is connected with the liquid discharge pipe equipped with control valve;Third hollow warehouse is equipped with opening and air outlet hole on processing box;Cover plate is tightly pressed on the top of processing box to seal the opening;Connecting column is equipped with fourth hollow warehouse, connecting column passes through cover plate and extends into third hollow warehouse and is connected with spray tray, the other end of connecting column is connected with ammonia pipe;Ammonia pipe, fourth hollow warehouse and spray tray are communicated in sequence;Spray tray is uniformly equipped with a plurality of spray heads.The utility model is convenient to use and can efficiently carry out denitration treatment to flue gas;

[0004] The prior art in the above exists the following defects: although the efficiency of flue gas denitration treatment can be improved, the form of spray head is relatively single, it is inconvenient to mix flue gas and ammonia water sprayed by spray head, so that ammonia water and flue gas are not fully reacted before being discharged to the next process, thereby affecting the quality of flue gas denitration treatment. SUMMARY

[0005] The utility model discloses a kind of ammonia injection device of glass production flue gas denitration system, to solve the defect that the ammonia injection device of existing glass production flue gas denitration system is inconvenient to mix flue gas and ammonia water sprayed by spray head.

[0006] To solve the above technical problem, the utility model provides the following technical scheme: a kind of ammonia injection device of glass production flue gas denitration system, including flue gas denitration tower;

[0007] The bottom of the flue gas denitration tower is provided with a flue gas inlet, and the outer wall of the flue gas denitration tower is fixedly connected with a flue gas discharge pipe;

[0008] The flue gas denitration tower is internally provided with an ammonia conveying pipe, one end of the ammonia conveying pipe is fixedly connected with a flow dividing pipe, the top of the flow dividing pipe is provided with a spray head, the inner wall of the flue gas denitration tower is fixedly connected with a flow guide plate, the inner wall of the flue gas denitration tower is fixedly connected with a turbulence plate, and the turbulence plate is internally provided with a turbulence hole.

[0009] Preferably, the spray head is arranged at equal intervals on the outer wall of the flow dividing pipe, and the spray head is conical.

[0010] Preferably, the flow guide plate is symmetrically arranged about the central axis of the flue gas denitration tower, and the flow guide plate is vertically arranged below the turbulence plate.

[0011] Preferably, the turbulence plate is L-shaped, and the turbulence plate is welded to the flue gas denitration tower.

[0012] Preferably, the flue gas denitration tower is internally provided with a sealing groove, the outer wall of the flue gas denitration tower is fixedly connected with a threaded rod, the outer wall of the flue gas denitration tower is provided with a rotating shaft, the outer wall of the rotating shaft is provided with an access door, one side of the access door is fixedly connected with a sealing ring, the outer wall of the access door is fixedly connected with a clamping plate, the outer wall of the threaded rod is movably connected with a limiting block, and the limiting block is internally provided with a threaded groove.

[0013] Preferably, the flue gas denitration tower and the access door form a rotating structure through the rotating shaft, and the sealing ring is clamped and connected with the flue gas denitration tower through the sealing groove.

[0014] Preferably, the clamping plate is of a slotted design, the clamping plate is movably connected with the threaded rod, and the threaded rod is threadedly connected with the limiting block through the threaded groove.

[0015] The ammonia spraying device of the glass production flue gas denitration system has the advantages that:

[0016] The flue gas denitration tower, the flue gas inlet, the ammonia conveying pipe, the flow dividing pipe, the spray head, the flow guide plate, the turbulence plate and the turbulence hole are arranged, ammonia water is injected into one end of the ammonia conveying pipe through the starting valve, and is sprayed out through the spray head arranged at the top of the flow dividing pipe, when the flue gas rises into the flue gas denitration tower through the flue gas inlet, the sprayed ammonia water contacts the flue gas, the spray head is arranged at equal intervals on the outer wall of the flow dividing pipe, and the spray head is conical, so that the spraying range of the ammonia water is increased, the ammonia water can fully contact the flue gas, and the quality of the flue gas denitration treatment is improved.

[0017] Further, the guide plate fixedly connected inside the flue gas denitration tower can slow down the rising speed of the flue gas, so that the flue gas and the ammonia water are further mixed.

[0018] Further, when the flue gas contacts the spoiler, part of the flue gas can pass through the spoiler hole, so that the flue gas and the ammonia water can be better mixed and reacted, and the other part of the flue gas rises from both sides of the spoiler, so that the rising speed of the flue gas is further slowed down, and the mixing efficiency of the flue gas and the ammonia water is improved.

[0019] The guide plate, the spoiler, the sealing groove, the threaded rod, the rotating shaft, the maintenance door, the sealing ring, the clamping plate and the limiting block are arranged, the limiting block is rotated, the limiting block is disassembled and the extrusion limiting of the clamping plate is released, the sealing ring is pulled, the clamping plate is slid out along the threaded rod under the action of the rotating shaft, the sealing ring is turned and opened along the flue gas denitration tower, at this time, the guide plate and the spoiler can be cleaned, and the nozzle can be maintained, so that the flue gas impurities are prevented from accumulating on the guide plate and the spoiler.

[0020] Further, when the maintenance is completed, the sealing ring is pulled to turn and close along the flue gas denitration tower, and the sealing ring is clamped and inserted into the sealing groove, so that the sealing property of the connection between the flue gas denitration tower and the maintenance door is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 It is a sectional view of the flue gas denitration tower of the utility model;

[0023] Figure 3 It is a sectional view of the flue gas denitration tower of the utility model;

[0024] Figure 4 It is a sectional view of the flue gas denitration tower of the utility model;

[0025] Figure 5 It is a sectional view of the flue gas denitration tower of the utility model;

[0026] The reference signs in the drawing are explained as follows: 1, flue gas denitration tower; 2, flue gas inlet; 3, flue gas outlet; 4, ammonia inlet pipe; 5, shunt pipe; 6, nozzle; 7, guide plate; 8, spoiler; 9, spoiler hole; 10, sealing groove; 11, threaded rod; 12, rotating shaft; 13, maintenance door; 14, sealing ring; 15, clamping plate; 16, limiting block; 17, threaded groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0028] Please refer to Figures 1-5 The utility model provides a kind of ammonia injection device of glass production flue gas denitration system, including flue gas denitration tower 1.

[0029] Refer to Figure 1 、 Figure 2 、 Figure 3 And Figure 4 As shown in the drawing, the bottom of flue gas denitration tower 1 is provided with smoke inlet 2, the outer wall of flue gas denitration tower 1 is fixedly connected with smoke exhaust pipe 3, the inside of flue gas denitration tower 1 is installed with ammonia delivery pipe 4, one end of ammonia delivery pipe 4 is fixedly connected with shunt pipe 5, the top of shunt pipe 5 is installed with spray head 6, the inner wall of flue gas denitration tower 1 is fixedly connected with guide plate 7, the inner wall of flue gas denitration tower 1 is fixedly connected with spoiler 8, spoiler 8 is provided with spoiler hole 9 in the inside, spray head 6 is arranged with equal interval on the outer wall of shunt pipe 5, spray head 6 is conical, ammonia delivery pipe 4 is welded with shunt pipe 5, guide plate 7 is symmetrically arranged with the central axis of flue gas denitration tower 1, guide plate 7 is vertically arranged below spoiler 8, spoiler 8 is L-shaped, and spoiler 8 is welded with flue gas denitration tower 1.

[0030] By starting valve, ammonia water is injected into one end of ammonia delivery pipe 4, and is sprayed out through spray head 6 installed on the top of shunt pipe 5, when flue gas rises to the inside of flue gas denitration tower 1 through smoke inlet 2, sprayed ammonia water contacts with flue gas, since spray head 6 is arranged with equal interval on the outer wall of shunt pipe 5, and spray head 6 is conical, the range of ammonia water spraying can be improved, so that ammonia water can fully contact with flue gas, by the inside of flue gas denitration tower 1 being fixedly connected with guide plate 7, the rising speed of flue gas can be slowed down, so that flue gas and ammonia water are further mixed and rise through the gap between guide plates 7, when flue gas contacts with spoiler 8, part of flue gas can pass through spoiler hole 9, so that flue gas and ammonia water can better react, and another part of flue gas rises from the both sides of spoiler 8, so that the rising speed of flue gas is further slowed down, and the mixing efficiency of flue gas and ammonia water is improved.

[0031] Refer to Figure 1 、 Figure 2 And Figure 4As shown, the inside of the flue gas denitration tower 1 is provided with a sealing groove 10, the outer wall of the flue gas denitration tower 1 is fixedly connected with a threaded rod 11, the outer wall of the flue gas denitration tower 1 is installed with a rotating shaft 12, the outer wall of the rotating shaft 12 is installed with an access door 13, one side of the access door 13 is fixedly connected with a sealing ring 14, the outer wall of the access door 13 is fixedly connected with a clamping plate 15, the outer wall of the threaded rod 11 is movably connected with a limiting block 16, the inside of the limiting block 16 is provided with a threaded groove 17, the flue gas denitration tower 1 and the access door 13 constitute a rotating structure through the rotating shaft 12, the sealing ring 14 is clamped and connected with the flue gas denitration tower 1 through the sealing groove 10, the clamping plate 15 is designed as a slotted type, the clamping plate 15 is movably connected with the threaded rod 11, and the threaded rod 11 is screwedly connected with the limiting block 16 through the threaded groove 17.

[0032] By rotating the limiting block 16, since the limiting block 16 is screwedly connected with the threaded rod 11 through the threaded groove 17, the limiting block 16 can be disassembled and the extrusion limiting of the clamping plate 15 is released, the sealing ring 14 is pulled, and under the action of the rotating shaft 12, the clamping plate 15 can slide and move out along the threaded rod 11, drives the sealing ring 14 to overturn and open along the flue gas denitration tower 1, at this time, the guide plate 7 and the spoiler 8 can be cleaned, and the nozzle 6 can be maintained, when the maintenance is completed, the sealing ring 14 is pulled to overturn and close along the flue gas denitration tower 1, drives the sealing ring 14 to be clamped and inserted into the sealing groove 10, and the sealing property of the connecting position of the flue gas denitration tower 1 and the access door 13 can be improved.

[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An ammonia injection device for a glass production flue gas denitration system, comprising a flue gas denitration tower (1); Characterized in that: The bottom of the flue gas denitration tower (1) is provided with a flue gas inlet (2), and the outer wall of the flue gas denitration tower (1) is fixedly connected with a flue gas exhaust pipe (3); An ammonia delivery pipe (4) is installed inside the flue gas denitration tower (1), one end of the ammonia delivery pipe (4) is fixedly connected with a shunt pipe (5), a spray head (6) is installed on the top of the shunt pipe (5), a guide vane (7) is fixedly connected to the inner wall of the flue gas denitration tower (1), a spoiler (8) is fixedly connected to the inner wall of the flue gas denitration tower (1), and a spoiler hole (9) is formed in the interior of the spoiler (8).

2. The ammonia injection device of a glass production flue gas denitration system according to claim 1, characterized in that: The spray heads (6) are arranged at equal intervals on the outer wall of the shunt pipe (5), the spray heads (6) are conical, and the ammonia delivery pipe (4) and the shunt pipe (5) are welded.

3. The ammonia injection device of a glass production flue gas denitration system according to claim 1, characterized in that: The guide vanes (7) are symmetrically arranged about the central axis of the flue gas denitration tower (1), and the guide vanes (7) are vertically arranged below the spoiler (8).

4. The ammonia injection device of a glass production flue gas denitration system according to claim 1, characterized in that: The spoiler (8) is L-shaped, and the spoiler (8) is welded to the flue gas denitration tower (1).

5. The ammonia injection device of a glass production flue gas denitration system according to claim 1, characterized in that: A sealing groove (10) is formed in the interior of the flue gas denitration tower (1), a threaded rod (11) is fixedly connected to the outer wall of the flue gas denitration tower (1), a rotating shaft (12) is installed on the outer wall of the flue gas denitration tower (1), a maintenance door (13) is installed on the outer wall of the rotating shaft (12), a sealing ring (14) is fixedly connected to one side of the maintenance door (13), a clamping plate (15) is fixedly connected to the outer wall of the maintenance door (13), a limiting block (16) is movably connected to the outer wall of the threaded rod (11), and a threaded groove (17) is formed in the interior of the limiting block (16).

6. The ammonia injection device of a glass production flue gas denitration system according to claim 5, characterized in that: The flue gas denitration tower (1) and the maintenance door (13) form a rotating structure through the rotating shaft (12), and the sealing ring (14) is connected with the flue gas denitration tower (1) through the sealing groove (10).

7. The ammonia injection device of a glass production flue gas denitration system according to claim 5, characterized in that: The clamping plate (15) is designed as a slotted type, the clamping plate (15) is movably connected with the threaded rod (11), and the threaded rod (11) is threadedly connected with the limiting block (16) through the threaded groove (17).

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