CN215311423U - Denitration reaction device - Google Patents
Denitration reaction device Download PDFInfo
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- CN215311423U CN215311423U CN202120446680.5U CN202120446680U CN215311423U CN 215311423 U CN215311423 U CN 215311423U CN 202120446680 U CN202120446680 U CN 202120446680U CN 215311423 U CN215311423 U CN 215311423U
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Abstract
The utility model discloses a denitration reaction device, which comprises a closed reaction furnace, wherein the top of the reaction furnace is vertically provided with a plurality of spray guns, the spray guns are distributed from one end of the reaction furnace to the other end at intervals, each spray gun comprises a spray rod, a spray head and an input end, the spray heads and the input ends are respectively positioned at two ends of the spray rods, one ends of the spray rods, which are close to the spray heads, are inserted into the reaction furnace, and one ends of the spray rods, which are close to the input ends, are positioned outside the reaction furnace; the side wall of the spray head is provided with a spray hole; according to the denitration reaction device, under the condition that the length of a single spray gun is not prolonged, the whole reaction furnace is covered by the spray guns, so that a denitration reducing agent can penetrate through the whole hearth, a denitration medicament and flue gas are fully mixed, and the denitration efficiency is effectively improved; in addition, for each spray gun, only part of the spray guns are inserted into the reaction furnace, so that the influence of high temperature in the furnace on the spray guns is limited, the overall problem of the spray guns is in a reasonable range, and the service life of the spray guns is effectively prolonged.
Description
Technical Field
The utility model relates to the technical field of denitration equipment, in particular to a denitration reaction device.
Background
The industrial boiler and kiln can generate nitrogen oxides during combustion, the nitrogen oxides are air pollutants and need to be removed before being discharged into the atmosphere, and the process of removing the nitrogen oxides is called denitration. The flue gas denitration mainly sprays chemical reducing agents such as ammonia water or urea into a flue or a furnace through a denitration spray gun, so that the chemical reducing agents and the flue gas are subjected to chemical reaction, and the flue gas is converted into clean substances such as nitrogen, water and the like and then discharged.
For the spray gun structure and the installation mode on the denitration reactor, at present, there are two main modes, the first mode is, as shown in fig. 3, the spray gun 2 'of the structure is always installed at both ends of the reactor 1', the spray gun 2 'sprays the atomized denitration reducing agent into the furnace chamber, so that the denitration reducing agent is mixed with the flue gas after the fuel is combusted and reacts to achieve the purpose of removing nitrogen oxide, however, because the spray distance of the spray gun 2' is limited, the furnace chamber is too wide and cannot completely penetrate through the kiln, so that the sufficient mixing of the denitration reducing agent and the flue gas of the furnace chamber cannot be ensured, the required denitration efficiency is difficult to achieve, and the denitration effect is limited. The second way is that, as shown in fig. 4, a lance 2 with a lance rod crossing the whole hearth is installed in the reaction furnace 1 ", and a plurality of small holes are opened on the lance rod to achieve the effect of penetrating the hearth, however, since the lance rod is too long and most of the lance rod is located in the hearth, the lance rod is easy to deform under a high temperature environment for a long time, the service life of the lance 2" is short, and in addition, since the lance 2 "is too long, the final atomization effect is reduced, and the denitration efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The present invention has been made to solve the above problems, and an object of the present invention is to provide a denitration reactor which can cover the entire reaction vessel with a denitration reducing agent without increasing the length of a denitration lance.
In order to achieve the purpose, the utility model discloses a denitration reaction device which comprises a closed reaction furnace, wherein a plurality of spray guns are vertically arranged at the top of the reaction furnace, the spray guns are distributed from one end of the reaction furnace to the other end at intervals, each spray gun comprises a spray rod, a spray head and an input end, the spray heads and the input ends are respectively positioned at two ends of the spray rods, one ends of the spray rods, close to the spray heads, are inserted into the reaction furnace, and one ends of the spray rods, close to the input ends, are positioned outside the reaction furnace; and the side wall of the spray head is provided with a spray hole.
Compared with the prior art, the denitration reaction device comprises a closed reaction furnace, wherein a plurality of spray guns are inserted into the top of the reaction furnace, one end of each spray gun with a spray head is inserted into the reaction furnace, and the spray guns are distributed from one end of the reaction furnace to the other end at intervals, so that the whole reaction furnace is covered by the spray guns under the condition that the length of a single spray gun is not prolonged, a denitration reducing agent can penetrate through the whole hearth, a denitration medicament is fully mixed with flue gas, and the denitration efficiency is effectively improved; in addition, for each spray gun, only part of the spray gun (close to one end of the spray head) is inserted into the reaction furnace, so that the influence of high temperature in the furnace on the spray gun is limited, and the upper end of the spray gun can dissipate heat in real time, so that the overall problem of the spray gun is in a reasonable range, and the service life of the spray gun is effectively prolonged.
Preferably, the side wall of the nozzle is provided with two opposite spray holes.
Preferably, the diameter of the spray hole is 2 mm-3 mm.
Preferably, the interval between two adjacent spray guns is 2 m-3 m.
Preferably, the spray rod is further sleeved with a high-temperature-resistant protective sleeve.
Preferably, the protective sleeve is a high-temperature-resistant ceramic sleeve.
Preferably, a cold air inlet is further formed in one end, close to the input end, of the spray rod.
Preferably, the input end is provided with an atomizer, the atomizer is provided with a first input port and a second input port, the first input port is used for being connected with a compressed air supply device, and the second input port is used for being connected with a reducing agent supply device.
Preferably, a fixing piece for installing and fixing the spray gun is further arranged at one end, close to the input end, of the spray rod.
Drawings
Fig. 1 is a schematic plan view of a denitration reactor according to an embodiment of the present invention.
Fig. 2 is a schematic plan view of the lance of fig. 1.
Fig. 3 is a schematic view of a prior art spray gun in use.
Fig. 4 is a schematic view of another prior art lance in use.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 and fig. 2, the embodiment discloses a denitration reactor to purify nitrogen oxides in flue gas, which includes a closed reactor 1, wherein the flue gas enters the reactor 1 and then reacts with a sprayed reducing agent. The vertical a plurality of spray guns 2 that are provided with in top of reacting furnace 1, a plurality of spray guns 2 are from reacting furnace 1's one end to other end interval distribution, and a plurality of spray guns 2 can be arranged along same axis, also the malposition distribution. The spray gun 2 comprises a spray rod 20, a spray head 21 and an input end 22, the spray head 21 and the input end 22 are respectively positioned at two ends of the spray rod 20, one end of the spray rod 20 close to the spray head 21 is inserted into the reaction furnace 1, one end of the spray rod 20 close to the input end 22 is positioned outside the reaction furnace 1, and the side wall of the spray head 21 is provided with a spray hole 210. The reducing agent enters the spray bar 20 through the input end 22, further enters the spray head 21 through the spray bar 20, and is finally sprayed in the reaction furnace 1 through the spray head 21.
To the denitration reaction device in the above embodiment, under the condition that the length of a single spray gun 2 is not prolonged, the whole reaction furnace 1 is covered by a plurality of spray guns 2, so that the denitration reducing agent can penetrate through the whole hearth, the denitration agent and the flue gas are fully mixed, and the denitration efficiency is effectively improved. In addition, for each spray gun 2, only part of the spray gun (close to one end of the spray head 21) is inserted into the reaction furnace 1, so that the influence of the high temperature in the furnace on the spray gun 2 is limited, and the upper end of the spray gun 2 can dissipate heat in real time, so that the overall problem of the spray gun 2 is in a reasonable range, and the service life of the spray gun 2 is effectively prolonged.
In order to effectively increase the spraying range of the spray gun 2, two opposite spray holes 210 are formed in the side wall of the spray head 21, and the diameter of the spray holes 210 is 2mm to 3mm, preferably 2.8mm in the embodiment. In addition, the interval between two adjacent spray guns 2 is 2 m-3 m.
Further, as shown in fig. 2, in order to avoid the over-high temperature of the spray gun 2, the spray rod 20 is further sleeved with a high temperature protection sleeve 3. In particular, the protective sheath 3 is a high temperature resistant ceramic sleeve.
In addition, in order to further reduce the temperature of the spray gun 2, a cold air inlet 23 is further provided at one end of the spray bar 20 close to the input end 22, and a cold air flow is input into the spray bar 20 through the cold air inlet 23, so that the spray bar 20 is cooled.
With regard to the structure of the input end 22 of the spray gun 2, specifically, as shown in fig. 2, the input end 22 is provided with the atomizer 4, the atomizer 4 is provided with a first input port 40 and a second input port 41, the first input port 40 is used for connecting with a compressed air supply device, and the second input port 41 is used for connecting with a reducing agent supply device. Compressed air and reducing agent enter the atomizer 4 through the first input port 40 and the second input port 41, respectively, so that the reducing agent is treated into a mist by the compressed air and sprayed from the spray head 21 through the spray bar 20.
To facilitate mounting of the fixed spray gun 2, the spray bar 20 is also provided with a fixing member 5 at an end thereof adjacent to the input end 22 for mounting the fixed spray gun 2. In this embodiment, the fixing member 5 is a fixing sleeve with a connector, and when in use, the fixing sleeve is sleeved on the spray rod 20 and then connected to a predetermined fixing frame through the connector.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (9)
1. A denitration reaction device is characterized by comprising a closed reaction furnace, wherein a plurality of spray guns are vertically arranged at the top of the reaction furnace, the spray guns are distributed at intervals from one end of the reaction furnace to the other end of the reaction furnace, each spray gun comprises a spray rod, a spray head and an input end, the spray heads and the input ends are respectively positioned at two ends of the spray rods, one ends of the spray rods, close to the spray heads, are inserted into the reaction furnace, and one ends of the spray rods, close to the input ends, are positioned outside the reaction furnace; and the side wall of the spray head is provided with a spray hole.
2. The denitration reactor of claim 1, wherein the side wall of the nozzle is provided with two opposite nozzles.
3. The denitration reactor according to claim 1, wherein the diameter of the nozzle hole is 2mm to 3 mm.
4. The denitration reactor according to claim 1, wherein the interval between two adjacent lances is 2m to 3 m.
5. The denitration reaction device of claim 1, wherein the spray bar is further sleeved with a high temperature-resistant protective sleeve.
6. The denitration reactor of claim 5, wherein the protective jacket is a high temperature resistant ceramic sleeve.
7. The denitration reactor of claim 1, wherein a cold air inlet is further provided at one end of the spray bar close to the input end.
8. The denitration reactor of claim 1, wherein the input end is provided with an atomizer, the atomizer is provided with a first input port and a second input port, the first input port is used for being connected with a compressed air supply device, and the second input port is used for being connected with a reducing agent supply device.
9. The denitration reactor of claim 1, wherein a fixing member for mounting and fixing a spray gun is further arranged at one end of the spray rod close to the input end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120446680.5U CN215311423U (en) | 2021-03-01 | 2021-03-01 | Denitration reaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120446680.5U CN215311423U (en) | 2021-03-01 | 2021-03-01 | Denitration reaction device |
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| Publication Number | Publication Date |
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| CN215311423U true CN215311423U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120446680.5U Active CN215311423U (en) | 2021-03-01 | 2021-03-01 | Denitration reaction device |
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| Country | Link |
|---|---|
| CN (1) | CN215311423U (en) |
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2021
- 2021-03-01 CN CN202120446680.5U patent/CN215311423U/en active Active
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