CN213132632U - Denitration treatment equipment - Google Patents
Denitration treatment equipment Download PDFInfo
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- CN213132632U CN213132632U CN202021514579.0U CN202021514579U CN213132632U CN 213132632 U CN213132632 U CN 213132632U CN 202021514579 U CN202021514579 U CN 202021514579U CN 213132632 U CN213132632 U CN 213132632U
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Abstract
The utility model discloses denitration treatment equipment, which comprises a first absorption tower, a second absorption tower and an iron nitrate storage tank; a first spraying layer and an iron layer are arranged in the first absorption tower, and the iron layer is arranged below the first spraying layer; the air outlet of the first absorption tower is communicated with the air inlet of the second absorption tower through a pipeline; the liquid outlet of the second absorption tower is communicated with the liquid inlet of the first spraying layer through a pipeline, and the liquid outlet of the first absorption tower is communicated with the ferric nitrate storage tank through a pipeline. The utility model has the advantages that the first absorption tower, the second absorption tower and the ferric nitrate storage tank are sequentially communicated, so that the nitrogen oxides in the waste gas can be fully absorbed, the waste gas treatment effect is good, the ferric nitrate solution is formed at the same time, and the resource utilization rate of the waste gas is improved; the utility model discloses a set up the iron sheet in first absorption tower, can turn into stable ferric nitrate with the unstable nitric acid in the absorption liquid, the treatment cost is low, and has higher economic benefits.
Description
Technical Field
The utility model relates to a waste gas treatment technical field, concretely relates to denitration treatment equipment.
Background
During the nitration reaction, nitric acid is decomposed, and a large amount of nitrogen oxides are generated. These nitrogen oxides can be a significant environmental hazard, such as photochemical smog, ozone layer destruction, and the like. Therefore, the method has important significance for related enterprises to economically and effectively treat the waste gas containing the nitrogen oxides generated in the nitration reaction.
In the prior art, the nitrogen oxide-containing waste gas is generally absorbed by water or alkali and converted into nitric acid or nitrate. However, the above method has a disadvantage in that the processing cost is high. Specifically, in the water absorption process, the generated dilute nitric acid is a dangerous chemical and needs to be subjected to post-treatment, so that the treatment cost is increased; in the alkali absorption process, a large amount of alkali liquor is consumed, and the raw material cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a denitration treatment device to solve among the prior art the technical problem that nitrogenous oxide exhaust-gas treatment is with high costs.
In order to achieve the technical purpose, the utility model provides a denitration treatment device, which comprises a first absorption tower, a second absorption tower and an iron nitrate storage tank;
a first spraying layer and an iron layer are arranged in the first absorption tower, and the iron layer is arranged below the first spraying layer;
the air outlet of the first absorption tower is communicated with the air inlet of the second absorption tower through a pipeline;
the liquid outlet of the second absorption tower is communicated with the liquid inlet of the first spraying layer through a pipeline, and the liquid outlet of the first absorption tower is communicated with the ferric nitrate storage tank through a pipeline.
Preferably, the iron layer is disposed at the bottom of the first absorption tower.
Preferably, the iron layer is arranged in the middle of the first absorption tower through the supporting device.
In particular, the support means is a fencing panel.
Preferably, a first packing layer is further arranged in the first absorption tower, and the first packing layer is arranged between the first spraying layer and the iron layer.
Preferably, the liquid outlet of the first absorption tower is communicated with the liquid inlet of the first spraying layer through a pipeline.
Preferably, a filter is arranged at the liquid outlet of the first absorption tower in a communication mode.
Preferably, a second filler layer, a second spraying layer and a demisting layer are sequentially arranged in the second absorption tower from bottom to top; the liquid outlet of the second absorption tower is communicated with the liquid inlet of the second spraying layer through a pipeline; the liquid inlet of the second spraying layer is communicated with a tap water pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model has the advantages that the first absorption tower, the second absorption tower and the ferric nitrate storage tank are sequentially communicated, so that the nitrogen oxides in the waste gas can be fully absorbed, the waste gas treatment effect is good, the ferric nitrate solution is formed at the same time, and the resource utilization rate of the waste gas is improved;
the utility model discloses a set up the iron sheet in first absorption tower, can turn into stable ferric nitrate with the unstable nitric acid in the absorption liquid, the treatment cost is low, and has higher economic benefits.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a denitration treatment apparatus provided by the present invention;
fig. 2 is a schematic structural diagram of the middle supporting device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a denitration treatment apparatus provided in the present invention. The direction indicated by the arrow in fig. 1 is the direction of movement of the absorption liquid or gas. The utility model provides a denitration treatment equipment, this denitration treatment equipment include first absorption tower 1, second absorption tower 2 and ferric nitrate storage tank 3. Wherein, be provided with first spraying layer 11 and iron layer 12 in the first absorption tower 1, and iron layer 12 sets up in first spraying layer 11 below. The design mode can enable the nitrogen oxides entering the first absorption tower 1 to be absorbed by the spray liquid sprayed from the first spray layer 11 and then react with iron in the iron layer 12 to prepare the ferric nitrate solution, so that the nitrogen oxides waste gas can be absorbed, the production cost of the ferric nitrate solution can be reduced, and the economic value is improved. Specifically, the iron used in the iron layer 12 is scrap iron. In one embodiment of the present invention, the iron layer 12 is disposed at the bottom of the first absorption tower 1. in another embodiment of the present invention, the iron layer 12 is disposed at the middle of the first absorption tower 1 through the supporting device 121. Referring to fig. 2, fig. 2 is a schematic structural diagram of the supporting device 121 according to the present invention. The supporting device 121 is a fence plate, so that the spraying liquid after reacting with iron can conveniently enter the bottom of the spraying tower 1 through the fence plate; further, the supporting device 121 is made of stainless steel. The utility model discloses an in other embodiments, iron layer 12 also can set up in first absorption tower 1 through other modes, does not do the restriction here, enables iron in iron layer 12 and sprays liquid, nitrogen oxide and fully contacts, turns into ferric nitrate solution, and spray the bottom that liquid can get into first absorption tower 1 can. In order to facilitate the addition of iron into the first absorption tower 1, a feeding port 14 is further formed in the first absorption tower 1 above the iron layer 12. In this embodiment, a first packing layer 13 is further provided in the first absorption tower 1, and the first packing layer 13 is provided between the first spray layer 11 and the iron layer 12. Through setting up first packing layer 13 and more being favorable to spraying liquid and nitrogen oxide fully to react, improve nitrogen oxide's absorption efficiency. Furthermore, the feeding opening 14 is arranged in the area between the first filler layer 13 and the iron layer 12, so that the iron supplementing process is prevented from being influenced.
The air inlet of the first absorption tower 1 is communicated with the nitrified waste gas generating device through a pipeline, the air outlet of the first absorption tower 1 is communicated with the air inlet of the second absorption tower 2 through a pipeline, and the air outlet of the second absorption tower 2 is communicated with the atmosphere, so that the waste gas containing nitrogen oxides is treated by the first absorption tower 1 and the second absorption tower 2 in sequence and then is discharged after reaching the standard. Specifically, the air inlet of the first absorption tower 1 is arranged on the side surface of the first absorption tower 1 and is positioned below the first packing layer 13; the air outlet of the first absorption tower 1 is arranged at the top of the first absorption tower 1; the air inlet of the second absorption tower 2 is arranged on the side surface of the second absorption tower 2 and is positioned below the second filler layer 21; the air outlet of the second absorption tower 2 is arranged at the top end of the second absorption tower 2. The gas conveying pipeline is also provided with a draught fan 4; preferably, the air inlet of the induced draft fan 4 is communicated with the air outlet of the second absorption tower 2, and the air outlet of the induced draft fan 4 is communicated with the atmosphere.
A second packing layer 21, a second spraying layer 22 and a demisting layer 23 are sequentially arranged in the second absorption tower 2 from bottom to top. The liquid inlet of the second spraying layer 22 is communicated with a tap water pipe, the liquid outlet of the second absorption tower 2 is communicated with the liquid inlet of the first spraying layer 11 through a pipeline, and the liquid outlet of the first absorption tower 1 is communicated with the ferric nitrate storage tank 3 through a pipeline. By the design mode, tap water can enter the second absorption tower 2 and the first absorption tower 1 in sequence, so that the conveying direction of gas is opposite to the conveying direction of absorption liquid, the water resource is conveniently and fully utilized, and the pipeline connection is simple.
In a preferred embodiment, the liquid outlet of the first absorption tower 1 is communicated with the liquid inlet of the first spraying layer 11 through a pipeline, and the liquid outlet of the second absorption tower 2 is communicated with the liquid inlet of the second spraying layer 23 through a pipeline. The arrangement mode can cause the spray liquid to internally circulate in the first absorption tower 1 and the second absorption tower 2, thereby improving the waste gas treatment effect and enabling the obtained ferric nitrate to reach higher concentration. Further, in order to detect the concentration of the obtained ferric nitrate solution, a sampling valve 5 can be communicated with the liquid outlet of the first absorption tower 1 to randomly sample the absorption liquid and manually test the concentration of the ferric nitrate solution.
Further, a filter 6 is arranged at the liquid outlet of the first absorption tower 1, so that the absorption liquid at the bottom of the first absorption tower 1 can be conveniently filtered, and the blockage of parts such as a pipeline, a pump and a valve at the back can be avoided. The filter 6 is a conventional filter, and its structure will not be described here.
The utility model discloses in, the first layer 11 that sprays, first packing layer 13, second spray layer 22, second packing layer 21 and defogging layer 23 the mode that sets up in first absorption tower 1 and second absorption tower 2 is prior art, does not describe here its repeatedly.
The utility model discloses in, all be provided with pump and valve as required on the liquid conveying pipeline.
Based on the structural description of the denitration treatment equipment, the specific working mode is explained in detail. The utility model discloses a denitration treatment equipment is at the in-process of handling the nitrogen oxide waste gas, and the nitrogen oxide waste gas gets into in the first absorption tower 1 from the air inlet of first absorption tower 1 side, after being absorbed by the spray liquid, gets into in the second absorption tower 2 through the gas outlet of first absorption tower 1 top, the air inlet of second absorption tower 2 side in proper order, after the spray liquid washing of second absorption tower 2, discharges in the air through the gas outlet of second absorption tower 2 top; meanwhile, tap water enters the second absorption tower 2 through the second spraying layer 22, gas entering the second absorption tower 2 is washed, then the gas is discharged through a liquid outlet of the second absorption tower 2 and continuously enters the second spraying layer 22 to be washed, after a period of time, absorption liquid in the second absorption tower 2 is conveyed into the first absorption tower 1, tap water is supplemented into the second absorption tower 2, and the influence on the subsequent washing effect caused by the overhigh nitrogen content in the absorption liquid in the second absorption tower 2 is avoided; the absorption liquid entering the first absorption tower 1 absorbs the nitrogen oxide-containing gas in the first absorption tower 1, is discharged from the liquid outlet of the first absorption tower 1, and enters the first spraying layer 11 again through a pipeline to form internal circulation; when the concentration of ferric nitrate in the absorption liquid reaches 40%, conveying the absorption liquid in the first absorption tower 1 to a ferric nitrate storage tank 3; then, the absorption liquid is continuously supplemented to the first absorption tower 1 through the second absorption tower 2, and the waste gas containing the nitrogen oxides is continuously absorbed. In the initial stage of treating the waste gas containing nitrogen oxides, the absorption liquid can be added into the first absorption tower 1 in advance, so that the absorption effect is prevented from being influenced due to the shortage of the absorption liquid in the first absorption tower 1.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model has the advantages that the first absorption tower, the second absorption tower and the ferric nitrate storage tank are sequentially communicated, so that the nitrogen oxides in the waste gas can be fully absorbed, the waste gas treatment effect is good, the ferric nitrate solution is formed at the same time, and the resource utilization rate of the waste gas is improved;
the utility model discloses a set up the iron sheet in first absorption tower, can turn into stable ferric nitrate with the unstable nitric acid in the absorption liquid, it is with low costs, have higher economic benefits.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. A denitration treatment device is characterized by comprising a first absorption tower, a second absorption tower and an iron nitrate storage tank; wherein the content of the first and second substances,
a first spraying layer and an iron layer are arranged in the first absorption tower, and the iron layer is arranged below the first spraying layer;
the air outlet of the first absorption tower is communicated with the air inlet of the second absorption tower through a pipeline;
the liquid outlet of the second absorption tower is communicated with the liquid inlet of the first spraying layer through a pipeline, and the liquid outlet of the first absorption tower is communicated with the ferric nitrate storage tank through a pipeline.
2. The denitration treatment apparatus according to claim 1, wherein the iron layer is provided at a bottom of the first absorption tower.
3. The denitration treatment apparatus according to claim 1, wherein said iron layer is provided in the middle of said first absorption tower by a support means.
4. The denitration treatment apparatus according to claim 3, wherein said supporting means is a fence plate.
5. The denitration treatment apparatus according to claim 1, wherein a first filler layer is further provided in the first absorption tower, and the first filler layer is provided between the first spray layer and the iron layer.
6. The denitration treatment apparatus according to claim 1, wherein the liquid outlet of the first absorption tower is communicated with the liquid inlet of the first spray layer through a pipe.
7. The denitration treatment apparatus according to claim 1, wherein a filter is provided in communication with the outlet of the first absorption tower.
8. The denitration treatment equipment of claim 1, wherein a second packing layer, a second spraying layer and a demisting layer are sequentially arranged in the second absorption tower from bottom to top; wherein the content of the first and second substances,
the liquid outlet of the second absorption tower is communicated with the liquid inlet of the second spraying layer through a pipeline;
and the liquid inlet of the second spraying layer is communicated with a tap water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021514579.0U CN213132632U (en) | 2020-07-27 | 2020-07-27 | Denitration treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021514579.0U CN213132632U (en) | 2020-07-27 | 2020-07-27 | Denitration treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213132632U true CN213132632U (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021514579.0U Active CN213132632U (en) | 2020-07-27 | 2020-07-27 | Denitration treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213132632U (en) |
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2020
- 2020-07-27 CN CN202021514579.0U patent/CN213132632U/en active Active
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