CN209828690U - Acid discharge system for dilute nitric acid production - Google Patents
Acid discharge system for dilute nitric acid production Download PDFInfo
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- CN209828690U CN209828690U CN201920373604.9U CN201920373604U CN209828690U CN 209828690 U CN209828690 U CN 209828690U CN 201920373604 U CN201920373604 U CN 201920373604U CN 209828690 U CN209828690 U CN 209828690U
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Abstract
The utility model belongs to the technical field of the dilute nitric acid technique and specifically relates to an acid discharging system is used in dilute nitric acid production, which comprises a reactor, the reactor upper end leads to through pipe connection and is provided with the separator, the separator upper end is provided with the heat exchanger through the pipe intercommunication, the heat exchanger lower extreme is provided with the acid discharging tank through the pipe intercommunication with the separator lower extreme, the heat exchanger upper end is provided with NO storage jar through the pipe intercommunication, be provided with oxygen jar and water storage tank through the pipe intercommunication respectively on the NO storage jar, acid discharging tank one side is provided with the acid discharging pump through the pipe intercommunication, acid discharging pump exit is provided with the water condenser through the pipe intercommunication, the NO storage jar passes through the pipe and is connected with the water condenser, the water condenser lower extreme is provided with the acid storage tank through the pipe intercommunication, be connected with tail gas treatment. The utility model has the characteristics of avoid polluting, be favorable to increasing production simultaneously.
Description
Technical Field
The utility model relates to a dilute nitric acid production is with arranging sour system technical field, especially relates to a dilute nitric acid production is with arranging sour system.
Background
The molecular formula of nitric acid (nitric acid) is HNO3, which is an inorganic acid with strong oxidizing property and strong corrosiveness, and the acid anhydride is dinitrogen pentoxide. Nitric acid is less acidic than sulfuric acid and hydrochloric acid (PKa ═ 1.3), is readily soluble in water, ionizes completely in water, and at room temperature, dilute solutions are colorless and transparent, and concentrated solutions are brown. Nitric acid is unstable and is easily decomposed by visible light, and the nitric acid is stored in a brown bottle in shade from light and is strictly prohibited from contacting with a reducing agent. Nitric acid is produced industrially mainly by the ammonia oxidation process for the manufacture of fertilizers, explosives, nitrates, etc. In the preparation of nitric acid, nitric acid and nitric oxide are generally produced by adding nitrogen dioxide to water to react, and the formula is 3NO2+ H2O ═ 2HNO3+ NO.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an acid discharge system for producing dilute nitric acid.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a dilute nitric acid production is with arranging sour system, includes the reactor, the reactor upper end leads to through the pipe connection and is provided with the separator, the separator upper end is provided with the heat exchanger through the pipe intercommunication, the heat exchanger lower extreme is provided with the acid discharge jar through the pipe intercommunication with the separator lower extreme, the heat exchanger upper end is provided with NO storage jar through the pipe intercommunication, it is provided with oxygen jar and water storage tank through the pipe intercommunication respectively to be provided with on the NO storage jar, acid discharge jar one side is provided with the acid discharge pump through the pipe intercommunication, acid discharge pump exit is provided with the water condenser through the pipe intercommunication, NO storage jar passes through the pipe and is connected with the water condenser, the water condenser lower extreme is provided with the acid storage jar through the pipe intercommunication, be connected with tail gas treatment mechanism.
Preferably, the tail gas treatment mechanism includes and is linked together the connecting pipe that sets up with acid storage tank, be provided with first valve on the connecting pipe, the connecting pipe extends into in the absorption tank, the intercommunication is provided with the inlet pipe on the absorption tank, threaded connection has the pipe cap on the inlet pipe, absorption tank one side intercommunication is provided with the discharge pipe, set up the second valve on the discharge pipe.
Preferably, the lower end of the connecting pipe is abutted against the bottom wall of the absorption tank.
Preferably, a plurality of anti-slip ribs are fixedly connected on the pipe cover at equal intervals.
Preferably, the acid discharge tank is provided with a remote liquid level indication alarm.
The utility model provides a dilute nitric acid production is with arranging sour system, beneficial effect lies in: NO storage jar, oxygen jar and water storage tank's design, when the nitric acid is prepared, receive nitric oxide, make nitric oxide react with water and oxygen, avoided nitric oxide's pollution, be favorable to increasing the output of nitric acid simultaneously, tail gas processing apparatus's design is convenient for absorb the nitric oxide that nitric acid does not react completely, prevents that tail gas from discharging to cause the pollution in the air.
Drawings
FIG. 1 is a schematic structural diagram of an acid discharge system for dilute nitric acid production according to the present invention;
FIG. 2 is an enlarged view of part A of an acid discharge system for dilute nitric acid production according to the present invention;
fig. 3 is a schematic structural view of the tube cover.
In the figure: the device comprises a reactor 1, a separator 2, a heat exchanger 3, an NO storage tank 4, an oxygen tank 5, a water storage tank 6, a water condenser 7, an acid discharge tank 8, a remote liquid level indication alarm 9, an acid discharge pump 10, a connecting pipe 11, a first valve 12, an acid storage tank 13, a feeding pipe 14, a pipe cover 15, an absorption tank 16, a discharge pipe 17, an anti-skid edge 18 and a second valve 19.
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, an acid discharge system for dilute nitric acid production comprises a reactor 1, a separator 2 is arranged at the upper end of the reactor 1 in a communicated mode through a conduit, a heat exchanger 3 is arranged at the upper end of the separator 2 in a communicated mode through a conduit, an acid discharge tank 8 is arranged at the lower end of the heat exchanger 3 and the lower end of the separator 2 in a communicated mode through a conduit, water and nitrogen dioxide are introduced into the reactor 1 to generate nitric acid and nitric oxide, the nitric acid and the nitric oxide are separated through the separator 2, the mixture of the nitric oxide and the nitric acid is condensed through the heat exchanger 3, the phenomenon that the temperature is too high during reaction is avoided, gasification of the nitric acid is caused, and the nitric oxide.
A remote transmission liquid level indication alarm 9 is arranged on the acid discharging tank 8, the model of the remote transmission liquid level indication alarm 9 is UHZ, the design of the remote transmission liquid level indication alarm 9 is convenient for monitoring the liquid level in the acid discharging tank 8, the upper end of a heat exchanger 3 is communicated with an NO storage tank 4 through a conduit, the NO storage tank 4 is respectively communicated with an oxygen tank 5 and a water storage tank 6 through conduits, one side of the acid discharging tank 8 is communicated with an acid discharging pump 10 through a conduit, the outlet of the acid discharging pump 10 is communicated with a water condenser 7 through a conduit, the NO storage tank 4 is connected with the water condenser 7 through a conduit, the lower end of the water condenser 7 is communicated with an acid storage tank 13 through a conduit, the acid storage tank 13 is connected with a tail gas treatment mechanism, water is provided through the oxygen tank 5 and the water storage tank 6 to react with oxygen and nitric oxide in the NO storage tank 4, the chemical equation is 4NO +3O2+2H2O ═ HN, the pollution caused by the NO flowing into the air is avoided, and the yield of the nitric acid is increased.
Tail gas treatment mechanism includes and stores up the connecting pipe 11 that acid tank 13 is linked together and sets up, be provided with first valve 12 on the connecting pipe 11, connecting pipe 11 extends into in the absorption tank 16, the intercommunication is provided with inlet pipe 14 on the absorption tank 16, threaded connection has tube cap 15 on the inlet pipe 14, 16 one side intercommunication of absorption tank is provided with discharge pipe 17, set up second valve 19 on the discharge pipe 17, connecting pipe 11 lower extreme and 16 diapire looks butt of absorption tank, equidistant a plurality of anti-skidding arriss 18 of fixedly connected with on the tube cap 15, through adding sodium hydroxide solution in absorption tank 16, be convenient for absorb the complete nitric oxide of no reaction, prevent to cause and reveal contaminated air, anti-skidding arris 18's design, the frictional force of tube cap 15 has been strengthened.
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. An acid discharge system for dilute nitric acid production comprises a reactor (1), wherein a separator (2) is arranged at the upper end of the reactor (1) through a conduit, and is characterized in that a heat exchanger (3) is arranged at the upper end of the separator (2) through a conduit, an acid discharge tank (8) is arranged at the lower end of the heat exchanger (3) and the lower end of the separator (2) through a conduit, an NO storage tank (4) is arranged at the upper end of the heat exchanger (3) through a conduit, an oxygen tank (5) and a water storage tank (6) are respectively arranged on the NO storage tank (4) through conduits in a communicating manner, an acid discharge pump (10) is arranged at one side of the acid discharge tank (8) through a conduit in a communicating manner, a water condenser (7) is arranged at the outlet of the acid discharge pump (10) through a conduit in a communicating manner, and the NO storage tank (4, the lower end of the water condenser (7) is communicated with an acid storage tank (13) through a guide pipe, and the acid storage tank (13) is connected with a tail gas treatment mechanism.
2. The acid discharge system for dilute nitric acid production according to claim 1, wherein the tail gas treatment mechanism comprises a connecting pipe (11) communicated with an acid storage tank (13), the connecting pipe (11) is provided with a first valve (12), the connecting pipe (11) extends into an absorption tank (16), the absorption tank (16) is communicated with a feeding pipe (14), the feeding pipe (14) is connected with a pipe cover (15) in a threaded manner, one side of the absorption tank (16) is communicated with a discharge pipe (17), and the discharge pipe (17) is provided with a second valve (19).
3. The acid discharge system for producing the dilute nitric acid according to claim 2, wherein the lower end of the connecting pipe (11) is abutted against the bottom wall of the absorption tank (16).
4. The acid discharge system for producing the dilute nitric acid according to claim 2, wherein a plurality of anti-slip ribs (18) are fixedly connected to the pipe cover (15) at equal intervals.
5. The acid discharge system for dilute nitric acid production according to claim 1, wherein a remote liquid level indication alarm (9) is arranged on the acid discharge tank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920373604.9U CN209828690U (en) | 2019-03-22 | 2019-03-22 | Acid discharge system for dilute nitric acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920373604.9U CN209828690U (en) | 2019-03-22 | 2019-03-22 | Acid discharge system for dilute nitric acid production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209828690U true CN209828690U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920373604.9U Active CN209828690U (en) | 2019-03-22 | 2019-03-22 | Acid discharge system for dilute nitric acid production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209828690U (en) |
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2019
- 2019-03-22 CN CN201920373604.9U patent/CN209828690U/en active Active
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