CN209740715U - Dilute nitric acid enrichment facility - Google Patents
Dilute nitric acid enrichment facility Download PDFInfo
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- CN209740715U CN209740715U CN201920373602.XU CN201920373602U CN209740715U CN 209740715 U CN209740715 U CN 209740715U CN 201920373602 U CN201920373602 U CN 201920373602U CN 209740715 U CN209740715 U CN 209740715U
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- nitric acid
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- concentrated
- magnesium nitrate
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Abstract
The utility model belongs to the technical field of the concentrated technique of rare nitric acid and specifically relates to a rare nitric acid enrichment facility, comprising a base plate, bottom plate upper surface one side fixed mounting has four landing legs, four landing leg upper end fixed mounting has the concentrated tower, concentrated tower upper end fixed mounting has the closing cap, fixed surface installs muddy liquid mechanism on the closing cap, the fixed distillation plant that is provided with in lower part in the concentrated tower, concentrated tower one side bottom intercommunication has the transfer line, transfer line one end intercommunication has the magnesium nitrate heater, fixed mounting has heat transfer mechanism between concentrated tower and the magnesium nitrate heater, and heat transfer mechanism fixed mounting is on the bottom plate and lie in the concentrated tower below, concentrated tower opposite side bottom intercommunication has the fluid-discharge tube, the concentrated tower is close to fluid-discharge tube one side fixed mounting and has vapour-. This dilute nitric acid enrichment facility concentration efficiency is high, concentrated purity is high, can cyclic utilization water resource moreover, has avoided the waste of resource, and the practicality is strong, is worth using widely.
Description
Technical Field
The utility model relates to a rare nitric acid concentration technical field especially relates to a rare nitric acid enrichment facility.
Background
The nitric acid concentration tower is a device for dehydrating dilute nitric acid in the tower to prepare concentrated nitric acid. The current dilute nitric acid concentration device is in the process of carrying out the heat transfer to the nitric acid vapour that evaporates, and heat exchange efficiency is lower, and the heat of production is not enough, can not provide sufficient heat source for the distillation process completely to can increase the input of heat source raw materials, cause manufacturing cost's increase, the distillation process precision is lower moreover, and purity is not enough, thereby is unfavorable for the concentrated process to dilute nitric acid. Therefore, in view of the above problems, improvement thereof is required.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a dilute nitric acid concentration device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
The utility model provides a dilute nitric acid enrichment facility, comprising a base plate, bottom plate upper surface one side fixed mounting has four landing legs, four landing leg upper end fixed mounting has the concentrated tower, and concentrated tower upper end fixed mounting has the closing cap, and fixed surface installs liquid mixing mechanism on the closing cap, the fixed distillation mechanism that is provided with in lower part in the concentrated tower, concentrated tower one side bottom intercommunication has the transfer line, and transfer line one end intercommunication has the magnesium nitrate heater, and magnesium nitrate heater fixed mounting on the bottom plate, the concentrated tower with fixed mounting has heat transfer mechanism between the magnesium nitrate heater, just heat transfer mechanism fixed mounting is on the bottom plate and is located the concentrated tower below, concentrated tower opposite side bottom intercommunication has the fluid-discharge tube, the concentrated tower is close to fluid-discharge tube one side fixed mounting and has vapour-liquid separation mechanism.
Preferably, the liquid mixing mechanism comprises a dilute nitric acid head tank fixedly mounted on one side of the upper surface of the sealing cover and a concentrated magnesium nitrate head tank fixedly mounted on the other side of the upper surface of the sealing cover, a second conduit is communicated with the bottom of one side of the dilute nitric acid head tank, a dilute nitric acid flow meter is fixedly mounted on the second conduit, a fourth conduit is communicated with the bottom of the concentrated magnesium nitrate head tank, a concentrated magnesium nitrate flow ratio regulating valve is fixedly mounted on the fourth conduit, a mixer is fixedly mounted between the concentrated magnesium nitrate flow ratio regulating valve and the dilute nitric acid flow meter, the lower end of the mixer is communicated with a third conduit, and the lower end of the third conduit is communicated with the upper part in the concentration tower.
Preferably, the heat exchange mechanism comprises a fan fixedly mounted on one side of the upper surface of the bottom plate and two pipelines fixedly mounted on the other side of the upper surface of the bottom plate, the upper end of the fan is communicated with a fifth conduit, the upper end of the fifth conduit is communicated with the magnesium nitrate heater, one end of the fan is communicated with a first conduit, two heat exchange pipes are communicated between the pipelines, a plurality of heat transfer blocks are fixedly mounted on one side of each heat exchange pipe and fixedly arranged on the concentration tower, and a spiral pipe is communicated between the pipelines.
Preferably, vapour-liquid separation mechanism includes vapour and liquid separator and the nitric acid condenser of fixed mounting on concentrating tower one side upper portion, vapour and liquid separator is located under the nitric acid condenser, vapour and liquid separator with communicate each other between the nitric acid condenser, vapour and liquid separator lower extreme intercommunication has the exhaust tube, and the exhaust tube lower extreme extends to concentrating tower one side bottom and the intercommunication has the sprayer, and sprayer fixed mounting on the bottom plate, vapour and liquid separator one side intercommunication has the drain pipe, and the drain pipe lower extreme extends to concentrating tower one side bottom and the intercommunication has the water circulation groove, and the water circulation groove is placed on the bottom plate.
Preferably, the distillation mechanism comprises a rectifying section and a stripping section which are fixedly arranged at the lower part in the concentration tower, and the rectifying section is positioned right above the stripping section.
The utility model provides a dilute nitric acid concentration device, beneficial effect lies in: this rare nitric acid enrichment facility is through mixing liquid, the heating is taken off the round pin, the stripping, the rectifying section, the condensation, the vapour-liquid separation, a series of processes such as backward flow acid seal and tail gas recovery, thereby can improve the concentrated efficiency and the concentrated purity of the rare nitric acid of the device greatly, and, the device can pass through the secondary steam that produces in the heat transfer mechanism reutilization magnesium nitrate heater, be used for the heat source as distillation operation, and heat exchange efficiency is high, and is effectual, the device can also retrieve the circulation and recycle to water, the waste of resource has been avoided, and the device has extremely strong practicality, and is worth using widely.
Drawings
Fig. 1 is a schematic structural diagram of a dilute nitric acid concentration device provided by the utility model.
Fig. 2 is a side view of the dilute nitric acid concentration device provided by the utility model.
Fig. 3 is a structural plan view of a heat exchange mechanism of the dilute nitric acid concentration device provided by the utility model.
In the figure: the device comprises a bottom plate 1, a first conduit 2, supporting legs 3, a spiral pipe 4, a heat transfer block 5, a heat exchange pipe 6, a pipeline 7, an ejector 8, a water circulation tank 9, a liquid discharge pipe 10, an air suction pipe 11, a vapor-liquid separator 12, a nitric acid condenser 13, a dilute nitric acid head tank 14, a second conduit 15, a third conduit 16, a sealing cover 17, a fourth conduit 18, a dilute nitric acid flowmeter 19, a mixer 20, a concentrated magnesium nitrate flow ratio regulating valve 21, a concentrated magnesium nitrate head tank 22, a concentration tower 23, a rectification section 24, a stripping section 25, a liquid conveying pipe 26, a magnesium nitrate heater 27, a fifth conduit 28, a fan 29 and a water discharge pipe 30.
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 dilute nitric acid concentration device comprises a bottom plate 1, four support legs 3 are fixedly mounted on one side of the upper surface of the bottom plate 1, a concentration tower 23 is fixedly mounted at the upper end of the four support legs 3, a sealing cover 17 is fixedly mounted at the upper end of the concentration tower 23, a liquid mixing mechanism is fixedly mounted on the upper surface of the sealing cover 17 and comprises a dilute nitric acid head tank 14 fixedly mounted on one side of the upper surface of the sealing cover 17 and a concentrated magnesium nitrate head tank 22 fixedly mounted on the other side of the upper surface of the sealing cover 17, a second conduit 15 is communicated with the bottom of one side of the dilute nitric acid head tank 14, a dilute nitric acid flow meter 19 is fixedly mounted on the second conduit 15, a fourth conduit 18 is communicated with the bottom of the concentrated magnesium nitrate head tank 22, a concentrated magnesium nitrate flow ratio regulating valve 21 is fixedly mounted on the fourth conduit 18, and a mixer 20 is fixedly mounted between the concentrated, the lower end of the mixer 20 is communicated with a third conduit 16, the lower end of the third conduit 16 is communicated to the upper part in the concentration tower 23, dilute nitric acid from a dilute nitric acid working section is sent to a dilute nitric acid head tank 14, the dilute nitric acid enters the mixer 20 through a dilute nitric acid flowmeter 19, concentrated magnesium nitrate solution is sent to a concentrated magnesium nitrate head tank 22 through a concentrated magnesium nitrate pump, the concentrated magnesium nitrate solution enters the mixer 20 through a concentrated magnesium nitrate flow ratio regulating valve 21 to be mixed with nitric acid, after the mixture is fully and uniformly mixed, the mixed solution flows into the concentration tower 23 through the third conduit 16, and through the dilute nitric acid flowmeter 19 and the concentrated magnesium nitrate flow ratio regulating valve 21, the flow and ratio relation of the dilute nitric acid and the concentrated magnesium nitrate solution can be accurately controlled, and the concentration process after the dilute nitric acid is.
The fixed distillation mechanism that is provided with of lower part in the enrichment column 23, distillation mechanism are including fixed rectification section 24 and the stripping section 25 that sets up lower part in the enrichment column 23, and rectification section 24 is located stripping section 25 directly over, is equipped with distillation plant in the enrichment column 23, divide into rectification section 24 and stripping section 25 promptly to can fully thoroughly distill the raw materials.
the bottom of one side of the concentration tower 23 is communicated with a liquid conveying pipe 26, one end of the liquid conveying pipe 26 is communicated with a magnesium nitrate heater 27, the magnesium nitrate heater 27 is fixedly installed on the bottom plate 1, a heat exchange mechanism is fixedly installed between the concentration tower 23 and the magnesium nitrate heater 27 and is fixedly installed on the bottom plate 1 and positioned below the concentration tower 23, the heat exchange mechanism comprises a fan 29 fixedly installed on one side of the upper surface of the bottom plate 1 and two pipelines 7 fixedly installed on the other side of the upper surface of the bottom plate 1, the upper end of the fan 29 is communicated with a fifth conduit 28, the upper end of the fifth conduit 28 is communicated with the magnesium nitrate heater 27, one end of the fan 29 is communicated with a first conduit 2, a plurality of heat exchange pipes 6 are communicated between the two pipelines 7, one side of the plurality of heat exchange pipes 6 is fixedly installed with a heat transfer block 5, the heat transfer block 5 is fixedly arranged on the concentration tower, through fan 29, heat exchange tube 6, pipeline 7, mutually support between multiple structures such as heat transfer piece 5 and spiral pipe 4, thereby can carry out the heat transfer to the secondary steam that produces in the magnesium nitrate heater 27, conduct heat and recycle, a heat source for as the distillation operation, thereby the waste of the energy has been avoided, and the spiral pipe 4 spiral helicine design, thereby can carry out the conduction of nitric acid steam steadily uniformly, be favorable to increasing the efficiency and the effect of heat transfer, possess extremely strong practicality, be worth promoting.
23 opposite side bottom intercommunication of concentrating tower 23 has fluid-discharge tube 10, concentrating tower 23 is close to fluid-discharge tube 10 one side fixed mounting has vapour-liquid separation mechanism, vapour-liquid separation mechanism includes vapour-liquid separator 12 and nitric acid condenser 13 of fixed mounting on 23 one side upper portions of concentrating tower, vapour-liquid separator 12 is located nitric acid condenser 13 under, communicate each other between vapour-liquid separator 12 and the nitric acid condenser 13, 12 lower extremes of vapour-liquid separator communicate has exhaust tube 11, and 11 lower extremes of exhaust tube extend to 23 one side bottom of concentrating tower and communicate and have sprayer 8, and sprayer 8 fixed mounting is on bottom plate 1, 12 one sides of vapour-liquid separator communicate has drain pipe 30, and the drain pipe 30 lower extreme extends to 23 one side bottom of concentrating tower and communicates and has water circulation groove 9, and water circulation groove 9 places on bottom plate 1.
The electric equipment and instruments such as the ejector 8, the vapor-liquid separator 12, the nitric acid condenser 13, the magnesium nitrate heater 27, the fan 29 and the like are connected with a power supply device through leads, and a switch for controlling the operation of the electric equipment and instruments is fixedly arranged on the leads.
The working principle is as follows: the dilute nitric acid from the dilute nitric acid working section is sent to a dilute nitric acid head tank 14, enters a mixer 20 through a dilute nitric acid flow meter 19, and the concentrated magnesium nitrate solution is sent to a concentrated magnesium nitrate head tank 22 through a concentrated magnesium nitrate pump and enters the mixer 20 through a concentrated magnesium nitrate flow ratio regulating valve 21 to be mixed with the nitric acid. The mixed solution of nitric acid and concentrated magnesium nitrate enters the middle part of the concentration tower 23, the concentrated magnesium nitrate solution absorbs the moisture in the dilute nitric acid to become a dilute magnesium nitrate solution, the dilute magnesium nitrate solution flows into a magnesium nitrate heater 27 from the bottom of the tower, the dilute magnesium nitrate solution flows into a dilute magnesium nitrate tank after being heated and denitrified, and secondary steam generated in the magnesium nitrate heater 27 enters the bottom of the concentration tower 23 to be used as a heat source for distillation operation.
Nitric acid steam with the content of 80% -90% enters a rectifying section 24 at the upper part from a stripping section 25 of a concentration tower 23, is purified into nitric acid steam with the content of more than 98%, enters a nitric acid condenser 13 to be condensed into concentrated nitric acid, then is subjected to distribution acid sealing by a vapor-liquid separator 12, the concentrated nitric acid with the content of about 2/3 returns to the concentration tower 23 after being subjected to reflux acid sealing, and the concentrated nitric acid with the content of about 1/3 goes to a concentrated nitric acid bleaching process. And tail gas from the gas-liquid separator 12 is recycled through the tower tail ejector 8, and acid water enters the tower tail water circulation tank 9 for recycling. After circulation, the concentration of the nitric acid in the tail water of the tower reaches 15-20 percent, and the tail water is sent to a dilute nitric acid device for recycling.
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 (5)
1. The utility model provides a dilute nitric acid enrichment facility, includes bottom plate (1), its characterized in that, bottom plate (1) upper surface one side fixed mounting has four landing legs (3), four landing leg (3) upper end fixed mounting has concentrating tower (23), and concentrating tower (23) upper end fixed mounting has closing cap (17), and fixed surface installs liquid mixing mechanism on closing cap (17), the fixed distillation plant that is provided with in lower part in concentrating tower (23), concentrating tower (23) one side bottom intercommunication has transfer line (26), and transfer line (26) one end intercommunication has magnesium nitrate heater (27), and magnesium nitrate heater (27) fixed mounting is on bottom plate (1), concentrating tower (23) with fixed mounting has heat transfer mechanism between magnesium nitrate heater (27), just heat transfer mechanism fixed mounting is on bottom plate (1) and is located concentrating tower (23) below, the bottom of the other side of the concentration tower (23) is communicated with a liquid discharge pipe (10), and a vapor-liquid separation mechanism is fixedly mounted on one side, close to the liquid discharge pipe (10), of the concentration tower (23).
2. The dilute nitric acid concentrating device according to claim 1, wherein the liquid mixing mechanism comprises a dilute nitric acid head tank (14) fixedly arranged on one side of the upper surface of the sealing cover (17) and a concentrated magnesium nitrate head tank (22) fixedly arranged on the other side of the upper surface of the sealing cover (17), the bottom of one side of the dilute nitric acid elevated tank (14) is communicated with a second conduit (15), a dilute nitric acid flowmeter (19) is fixedly arranged on the second conduit (15), the bottom of the concentrated magnesium nitrate head tank (22) is communicated with a fourth conduit (18), a concentrated magnesium nitrate flow ratio regulating valve (21) is fixedly mounted on the fourth conduit (18), a mixer (20) is fixedly mounted between the concentrated magnesium nitrate flow ratio regulating valve (21) and the dilute nitric acid flowmeter (19), the lower end of the mixer (20) is communicated with a third conduit (16), and the lower end of the third conduit (16) is communicated to the inner upper part of the concentration tower (23).
3. The dilute nitric acid concentrating device according to claim 1, wherein the heat exchange mechanism comprises a fan (29) fixedly mounted on one side of the upper surface of the bottom plate (1) and two pipelines (7) fixedly mounted on the other side of the upper surface of the bottom plate (1), a fifth conduit (28) is communicated with the upper end of the fan (29), the upper end of the fifth conduit (28) is communicated with the magnesium nitrate heater (27), a first conduit (2) is communicated with one end of the fan (29), a plurality of heat exchange tubes (6) are communicated between the two pipelines (7), a heat transfer block (5) is fixedly mounted on one side of each heat exchange tube (6), the heat transfer block (5) is fixedly arranged on the concentrating tower (23), and a spiral tube (4) is communicated between one pipeline (7) and the first conduit (2).
4. The dilute nitric acid concentrating apparatus according to claim 1, wherein the vapor-liquid separating means comprises a vapor-liquid separator (12) and a nitric acid condenser (13) fixedly installed at an upper portion of one side of the concentrating tower (23), the vapor-liquid separator (12) is positioned under the nitric acid condenser (13), the vapor-liquid separator (12) and the nitric acid condenser (13) are communicated with each other, the lower end of the vapor-liquid separator (12) is communicated with an air extraction pipe (11), the lower end of the extraction pipe (11) extends to the bottom of one side of the concentration tower (23) and is communicated with an ejector (8), the ejector (8) is fixedly arranged on the bottom plate (1), one side of the vapor-liquid separator (12) is communicated with a drain pipe (30), and the lower end of the drain pipe (30) extends to the bottom of one side of the concentration tower (23) and is communicated with a water circulation tank (9), and the water circulation tank (9) is arranged on the bottom plate (1).
5. A dilute nitric acid concentration device according to claim 1, wherein the distillation mechanism comprises a rectifying section (24) and a stripping section (25) which are fixedly arranged at the lower part in the concentration tower (23), and the rectifying section (24) is positioned right above the stripping section (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920373602.XU CN209740715U (en) | 2019-03-22 | 2019-03-22 | Dilute nitric acid enrichment facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920373602.XU CN209740715U (en) | 2019-03-22 | 2019-03-22 | Dilute nitric acid enrichment facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209740715U true CN209740715U (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920373602.XU Active CN209740715U (en) | 2019-03-22 | 2019-03-22 | Dilute nitric acid enrichment facility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209740715U (en) |
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2019
- 2019-03-22 CN CN201920373602.XU patent/CN209740715U/en active Active
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