CN209835866U - Magnesium tail water recovery unit is used in concentrated nitric acid production - Google Patents
Magnesium tail water recovery unit is used in concentrated nitric acid production Download PDFInfo
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- CN209835866U CN209835866U CN201920373603.4U CN201920373603U CN209835866U CN 209835866 U CN209835866 U CN 209835866U CN 201920373603 U CN201920373603 U CN 201920373603U CN 209835866 U CN209835866 U CN 209835866U
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- tail water
- magnesium tail
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- water pump
- absorption tower
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Abstract
The utility model belongs to the technical field of the waste liquid treatment technique and specifically relates to a magnesium tail water recovery unit is used in concentrated nitric acid production, including magnesium tail water groove, the delivery port of first magnesium tail water pump has the startup acid groove through pipe connection, there is second magnesium tail water pump on the upper end one side of startup acid groove through pipe fixedly connected with, the delivery port of second magnesium tail water pump passes through pipe fixedly connected with first flow control valve, there is the absorption tower in the export of first flow control valve through pipe connection, there is third magnesium tail water pump through pipe connection on the startup acid groove, there is the second flow control valve the delivery port of third magnesium tail water pump through pipe connection, there is desalination water pump on the upper end one side of absorption tower through pipe connection, the inside top fixedly connected with of absorption tower sprays the mechanism, spray the below one side fixedly connected with acidizing fluid inlet pipe of mechanism, there is the liquid evaporator bottom of absorption tower through pipe connection. The utility model discloses simple structure is worth promoting.
Description
Technical Field
The utility model relates to a waste liquid treatment technical field especially relates to a magnesium tail water recovery unit is used in concentrated nitric acid production.
Background
Concentrated nitric acid is one of indispensable raw materials in national defense industry and chemical industry, and an intermediate product, namely liquid dinitrogen tetroxide, produced by the concentrated nitric acid is a high-energy fuel launched by rockets and missiles. Concentrated nitric acid cannot be directly distilled from dilute nitric acid because HNO3 and H2O form a binary azeotrope with a maximum boiling temperature of 121.9 ℃ and a corresponding acid concentration of 68.4%, and the composition of this mixture is not changed by continued distillation. Common methods for producing concentrated nitric acid are: indirect and direct processes.
In recent years, with the issuance of new national environmental regulations and the implementation of energy-saving emission-reduction regulations, the development of a process method for producing nitric acid, which meets the requirements of energy saving and emission reduction and has low cost, is urgently needed, magnesium tail water is treated as wastewater, so that the environment is polluted, and the treatment cost of the magnesium tail water is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the magnesium tail water in the prior art causes environmental pollution, and provides a magnesium tail water recovery device for producing concentrated nitric acid.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the magnesium tail water recovery device for the production of the concentrated nitric acid comprises a magnesium tail water tank, wherein a water outlet of the magnesium tail water tank is connected with a first magnesium tail water pump through a pipe, a water outlet of the first magnesium tail water pump is connected with a start acid tank through a pipe, one side of the start acid tank is fixedly connected with a concentration detector, the concentration detector is communicated with the start acid tank, one side of the upper end of the start acid tank is fixedly connected with a second magnesium tail water pump through a pipe, a water outlet of the second magnesium tail water pump is fixedly connected with a first flow control valve through a pipe, an outlet of the first flow control valve is connected with an absorption tower through a pipe, the start acid tank is connected with a third magnesium tail water pump through a pipe, a water outlet of the third magnesium tail water pump is connected with a second flow control valve through a pipe, and a water outlet of the second flow control valve is communicated with the absorption tower through a pipe, the absorption tower is characterized in that one side of the upper end of the absorption tower is connected with a desalted water pump through a conduit, the top end of the interior of the absorption tower is fixedly connected with a spraying mechanism, the spraying mechanism is communicated with the desalted water pump, a plurality of tower plates are fixedly connected below the spraying mechanism in the absorption tower, an acid liquor inlet pipe is fixedly connected to one side of the lower portion of the spraying mechanism, the acid liquor inlet pipe is communicated with the absorption tower, and the bottom end of the absorption tower is connected with a liquid evaporator through a conduit.
Preferably, the water inlet of the desalted water pump is connected with the external desalted water storage tank through a conduit.
Preferably, the spraying mechanism comprises a horizontal pipe, two ends of the horizontal pipe are fixed on the absorption tower, and the lower end of the horizontal pipe is fixedly connected with a plurality of nozzles along the length direction.
Preferably, the top end of the absorption tower is provided with an air outlet.
Preferably, the trays are uniformly distributed.
Preferably, the acid liquid feeding pipe is filled with dilute nitric acid solution.
The utility model provides a pair of magnesium tail water recovery unit is used in concentrated nitric acid production, beneficial effect lies in: the utility model discloses a concentration detector detects the concentration of magnesium tail water, according to the rare nitric acid of concentration ratio of magnesium tail water, will dilute nitric acid acidification, promotes the concentration of rare nitric acid, adopts the column plate of co-altitude not to mix according to the difference of the concentration of magnesium tail water, and the top adds establishes spray set, controls nitrogen oxide's emission concentration, simple structure, and magnesium tail water recycle reduces the pollution of waste water to the environment.
Drawings
FIG. 1 is a schematic structural view of a magnesium tail water recovery device for concentrated nitric acid production according to the present invention;
FIG. 2 is a schematic structural view of an absorption tower of the present invention;
fig. 3 is a schematic sectional structure diagram of the absorption tower of the present invention.
In the figure: the system comprises a magnesium tail water tank 1, a first magnesium tail water pump 2, a starting acid tank 3, a concentration detector 4, a second magnesium tail water pump 5, a third magnesium tail water pump 6, a first flow control valve 7, a second flow control valve 8, an absorption tower 9, a desalted water pump 10, a transverse pipe 11, a spray head 12, an air outlet 13, a tower plate 14, an acid liquor feeding pipe 15 and an evaporator 16.
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.
Referring to fig. 1-3, a magnesium tail water recovery device for concentrated nitric acid production comprises a magnesium tail water tank 1, a water outlet of the magnesium tail water tank 1 is connected with a first magnesium tail water pump 2 through a conduit, the first magnesium tail water pump 2 is used for guiding magnesium tail water into a startup acid tank 3, the water outlet of the first magnesium tail water pump 2 is connected with the startup acid tank 3 through a conduit, the startup acid tank 3 is used for enhancing the acid strength of the magnesium tail water, one side of the startup acid tank 3 is fixedly connected with a concentration detector 4, the concentration detector 4 is used for detecting the acid strength of the magnesium tail water, the concentration detector 4 is communicated with the startup acid tank 3, one side of the upper end of the startup acid tank 3 is fixedly connected with a second magnesium tail water pump 5 through a conduit, the second magnesium tail water pump 5 is used for guiding magnesium tail water into an absorption tower 9, the water outlet of the second magnesium tail water pump 5 is fixedly connected with a first flow control valve 7 through a conduit, the first flow control valve 7 is used for controlling the flow of the magnesium tail water, the outlet of the first flow control valve 7 is connected with an absorption tower 9 through a conduit, and the absorption tower 9 is used for acidifying the dilute nitric acid by the magnesium tail water.
There is third magnesium tail water pump 6 through pipe connection on the start acid tank 3, the effect of third magnesium tail water pump 6 is to lead in the absorption tower 9 with the magnesium tail water, there is second flow control valve 8 through pipe connection at the delivery port of third magnesium tail water pump 6, the delivery port of second flow control valve 8 passes through pipe intercommunication absorption tower 9, start acid tank 3 intercommunication a plurality of magnesium tail water pumps, according to the difference of concentration, the magnesium tail water transports to different column plate 14 height, add dilute nitric acid according to the concentration, make the magnesium tail water fully utilized, there is desalination water pump 10 upper end one side of absorption tower 9 through pipe connection, desalination water pump 10's effect is for spraying the mechanism provides the water source, desalination water inlet of water pump 10 passes through the pipe and links to each other with outside desalination water, the inside top fixedly connected with of absorption tower 9 sprays the mechanism.
Spray the mechanism including violently managing 11, violently manage 11 both ends and all fix on absorption tower 9, violently manage 11 lower extreme along length direction fixedly connected with a plurality of shower nozzle 12, spray the effect of mechanism and be the concentration that reduces nitric oxide, spray mechanism's intercommunication desalination water pump 10, gas outlet 13 has been seted up on the top of absorption tower 9, be located a plurality of column plate 14 of below fixedly connected with that sprays the mechanism in the absorption tower 9, 14 evenly distributed of column plate, spray below one side fixedly connected with acidizing fluid inlet pipe 15 of mechanism, the effect of acidizing fluid inlet pipe 15 is with leading-in absorption tower 9 of dilute nitric acid in, be dilute nitric acid solution in the acidizing fluid inlet pipe 15, acidizing fluid inlet pipe 15 intercommunication absorption tower 9, there is liquid evaporator 16 bottom of absorption tower 9 through pipe connection, liquid evaporator 16's effect is the concentration that improves the solution.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The magnesium tail water recovery device for the production of the concentrated nitric acid comprises a magnesium tail water tank (1), wherein a water outlet of the magnesium tail water tank (1) is connected with a first magnesium tail water pump (2) through a pipe, a water outlet of the first magnesium tail water pump (2) is connected with a start acid tank (3) through a pipe, the magnesium tail water recovery device is characterized in that one side of the start acid tank (3) is fixedly connected with a concentration detector (4), the concentration detector (4) is communicated with the start acid tank (3), one side of the upper end of the start acid tank (3) is fixedly connected with a second magnesium tail water pump (5) through a pipe, a water outlet of the second magnesium tail water pump (5) is fixedly connected with a first flow control valve (7) through a pipe, an outlet of the first flow control valve (7) is connected with an absorption tower (9) through a pipe, the start acid tank (3) is connected with a third magnesium tail water pump (6) through a, the water outlet of the third magnesium tail water pump (6) is connected with a second flow control valve (8) through a pipe, the water outlet of the second flow control valve (8) is communicated with the absorption tower (9) through a pipe, one side of the upper end of the absorption tower (9) is connected with a desalted water pump (10) through a pipe, the top end of the inside of the absorption tower (9) is fixedly connected with a spraying mechanism, the spraying mechanism is communicated with the desalted water pump (10), a plurality of tower plates (14) are fixedly connected below the spraying mechanism in the absorption tower (9), an acid liquid feeding pipe (15) is fixedly connected to one side of the lower portion of the spraying mechanism, the acid liquid feeding pipe (15) is communicated with the absorption tower (9), and the bottom end of the absorption tower (9) is connected with a liquid evaporator (16) through a pipe.
2. The magnesium tail water recovery device for concentrated nitric acid production according to claim 1, wherein the water inlet of the desalted water pump (10) is connected with an external desalted water storage tank through a conduit.
3. The magnesium tail water recovery device for concentrated nitric acid production according to claim 1, wherein the spraying mechanism comprises a horizontal pipe (11), both ends of the horizontal pipe (11) are fixed on the absorption tower (9), and the lower end of the horizontal pipe (11) is fixedly connected with a plurality of spray heads (12) along the length direction.
4. The magnesium tail water recovery device for concentrated nitric acid production according to claim 1, wherein the top end of the absorption tower (9) is provided with a gas outlet (13).
5. A magnesium tail water recovery device for concentrated nitric acid production according to claim 1, wherein the trays (14) are uniformly distributed.
6. The magnesium tail water recovery device for concentrated nitric acid production according to claim 1, wherein the acid solution feed pipe (15) is filled with a dilute nitric acid solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920373603.4U CN209835866U (en) | 2019-03-22 | 2019-03-22 | Magnesium tail water recovery unit is used in concentrated nitric acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920373603.4U CN209835866U (en) | 2019-03-22 | 2019-03-22 | Magnesium tail water recovery unit is used in concentrated nitric acid production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209835866U true CN209835866U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920373603.4U Active CN209835866U (en) | 2019-03-22 | 2019-03-22 | Magnesium tail water recovery unit is used in concentrated nitric acid production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209835866U (en) |
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2019
- 2019-03-22 CN CN201920373603.4U patent/CN209835866U/en active Active
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