CN211864473U - Absorption tower is used in nitric acid production - Google Patents
Absorption tower is used in nitric acid production Download PDFInfo
- Publication number
- CN211864473U CN211864473U CN202020284865.6U CN202020284865U CN211864473U CN 211864473 U CN211864473 U CN 211864473U CN 202020284865 U CN202020284865 U CN 202020284865U CN 211864473 U CN211864473 U CN 211864473U
- Authority
- CN
- China
- Prior art keywords
- tower
- nitric acid
- tower body
- absorption tower
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910017604 nitric acid Inorganic materials 0.000 title claims abstract description 33
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 3
- 230000013011 mating Effects 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000002826 coolant Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model belongs to the technical field of nitric acid production, in particular to an absorption tower for nitric acid production, which comprises a tower body, wherein the upper end of the tower body is respectively provided with a liquid inlet and a gas outlet, the bottom of the tower body is provided with an air inlet and a nitric acid outlet, a plurality of layers of tower plates are arranged inside the tower body, a plurality of sieve pores are arranged on each layer of tower plate, and each tower plate is provided with a cooling coil pipe; the utility model discloses a set up the cooling cavity on the lateral wall of tower body to under the cooling coil's that arranges with the snakelike bending of setting on the column plate mating reaction, can make the cooling effect of this absorption tower better, can be in time effectual discharge the heat that produces in the tower, thereby improve the production efficiency of nitric acid.
Description
Technical Field
The utility model belongs to the technical field of the nitric acid production, concretely relates to absorption tower is used in nitric acid production.
Background
The nitric acid absorption tower is a core device in the nitric acid production process, and has the functions of converting NOx gas from a cooler, absorption liquid and oxygen in the tower into nitric acid with the mass fraction of about 63.5% after reaction, enabling the NOx gas to enter from the bottom of the absorption tower, enabling the absorption liquid to flow from top to bottom of the absorption tower and reversely contact with rising NOx to perform chemical reaction to generate nitric acid solution, and discharging the generated nitric acid solution from the bottom of the absorption tower.
The process of generating nitric acid can produce a large amount of heats, according to the relevant principle of chemical thermodynamics, the reaction heat in the tower needs in time to shift out equipment, just can improve absorption tower absorption NOx efficiency, and present absorption tower cooling structure generally is the cooling tube that sets up on the column plate, often can exist because the relatively poor production efficiency who leads to nitric acid of cooling effect is low.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides an absorption tower for nitric acid production, which has the characteristics of good cooling effect and capability of effectively improving the production efficiency of nitric acid.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an absorption tower is used in nitric acid production, includes the tower body, is provided with inlet and gas vent respectively in the upper end of tower body, is provided with air inlet and nitric acid export in the bottom of tower body, is provided with a plurality of layers of column plate in the inside of tower body, has all seted up a plurality of sieve mesh on every layer of column plate, and all is provided with cooling coil on every column plate, the lateral wall of tower body forms a sealed cooling cavity including inside wall and lateral wall between inside wall and lateral wall, is provided with inlet tube and the drain pipe that communicates with the cooling cavity on the lateral wall.
Preferably, the diameter of the sieve holes is 5-12 mm.
Preferably, the cooling coils on the trays are arranged in a serpentine shape.
Preferably, the water inlet pipe arranged on the outer side wall of the tower body is positioned below the water outlet pipe.
Preferably, 40 layers of tower plates are arranged in the tower body.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up the cooling cavity on the lateral wall of tower body, after the inside injection coolant liquid to the cooling cavity through the inlet tube, until will cool off the cavity and fill, the drain pipe discharge can be followed to the coolant liquid afterwards to can form cooling cycle, and under the cooling coil's that arranges with the snakelike bending that sets up on the column plate cooperation, can make the cooling effect of this absorption tower better, can be timely effectual with the heat discharge that produces in the tower, thereby improve the production efficiency of nitric acid.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of the present invention;
in the figure: 1 tower body, 2 liquid inlets, 3 exhaust ports, 4 air inlets, 5 nitric acid outlets, 6 tower plates, 7 cooling coils, 8 inner side walls, 9 outer side walls, 10 cooling cavities, 11 water inlet pipes and 12 water outlet pipes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1, the present invention provides the following technical solutions: an absorption tower for nitric acid production, comprising a tower body 1, a liquid inlet 2 and an exhaust port 3 are respectively arranged at the upper end of the tower body 1, an air inlet 4 and a nitric acid outlet 5 are arranged at the bottom of the tower body 1, 40 layers of tower plates 6 are arranged inside the tower body 1, a plurality of sieve holes are arranged on each layer of tower plate 6, the diameter of each sieve hole is 5-12mm, a cooling coil 7 is arranged on each tower plate 6, the cooling coil 7 is arranged in a serpentine shape and is connected with a cooling liquid supply device, the internal part of the tower body 1 can be cooled continuously, the side wall of the tower body 1 comprises an inner side wall 8 and an outer side wall 9, a sealed cooling cavity 10 is formed between the inner side wall 8 and the outer side wall 9, a water inlet pipe 11 and a water outlet pipe 12 which are communicated with the cooling cavity 10 are arranged on the outer side wall 9, the water inlet pipe 11 arranged on the, and inlet tube 11 and drain pipe 12 are located the upper and lower both ends department of cooling cavity 9 respectively, can be convenient for the coolant liquid fill cooling cavity 9 to fully with the inside wall 8 contact of tower body 1, make the cooling effect better.
The utility model discloses NOx gas gets into from air inlet 4 from the bottom of absorption tower when using, the absorption liquid flows from 2 top-down of inlet at absorption tower top, carry out chemical reaction with the reverse contact of NOx that rises and generate nitric acid solution, the nitric acid solution that generates is discharged from the nitric acid export 5 of bottom of tower, 3 discharges of gas vent can be followed to tail gas that produces at this in-process, and after injecting the coolant liquid into the inside of cooling cavity 10 through inlet tube 11, until filling up cooling cavity 10, drain pipe 12 discharges can be followed to the coolant liquid afterwards, thereby can form cooling cycle, and under the mating action with the cooling coil 7 that the serpentine bending that sets up on column plate 6 arranged, can make the cooling effect of this absorption tower better, can be timely effectual with the heat discharge that produces in the tower, thereby improve the production efficiency of nitric acid.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides an absorption tower is used in nitric acid production, includes tower body (1), its characterized in that: be provided with inlet (2) and gas vent (3) respectively in the upper end of tower body (1), be provided with air inlet (4) and nitric acid export (5) in the bottom of tower body (1), be provided with a plurality of layer of column plate (6) in the inside of tower body (1), all seted up a plurality of sieve mesh on every layer of column plate (6), and all be provided with cooling coil (7) on every column plate (6), the lateral wall of tower body (1) forms a sealed cooling cavity (10) including inside wall (8) and lateral wall (9) between inside wall (8) and lateral wall (9), is provided with inlet tube (11) and drain pipe (12) with cooling cavity (10) intercommunication on lateral wall (9).
2. The absorption tower for producing nitric acid according to claim 1, wherein: the diameter of the sieve holes is 5-12 mm.
3. The absorption tower for producing nitric acid according to claim 1, wherein: the cooling coils (7) on the tower plates (6) are arranged in a serpentine bent mode.
4. The absorption tower for producing nitric acid according to claim 1, wherein: the water inlet pipe (11) arranged on the outer side wall (9) of the tower body (1) is positioned below the water outlet pipe (12).
5. The absorption tower for producing nitric acid according to claim 1, wherein: and 40 layers of tower plates (6) are arranged in the tower body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020284865.6U CN211864473U (en) | 2020-03-10 | 2020-03-10 | Absorption tower is used in nitric acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020284865.6U CN211864473U (en) | 2020-03-10 | 2020-03-10 | Absorption tower is used in nitric acid production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211864473U true CN211864473U (en) | 2020-11-06 |
Family
ID=73255064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020284865.6U Expired - Fee Related CN211864473U (en) | 2020-03-10 | 2020-03-10 | Absorption tower is used in nitric acid production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211864473U (en) |
-
2020
- 2020-03-10 CN CN202020284865.6U patent/CN211864473U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |