CN117684266A - Metal nitrate crystal production line - Google Patents
Metal nitrate crystal production line Download PDFInfo
- Publication number
- CN117684266A CN117684266A CN202311698414.1A CN202311698414A CN117684266A CN 117684266 A CN117684266 A CN 117684266A CN 202311698414 A CN202311698414 A CN 202311698414A CN 117684266 A CN117684266 A CN 117684266A
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- Prior art keywords
- kettle
- pipeline
- metal nitrate
- communicated
- evaporation
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- 229910001960 metal nitrate Inorganic materials 0.000 title claims abstract description 71
- 239000013078 crystal Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000012535 impurity Substances 0.000 claims abstract description 45
- 238000001704 evaporation Methods 0.000 claims abstract description 44
- 230000008020 evaporation Effects 0.000 claims abstract description 41
- 238000002425 crystallisation Methods 0.000 claims abstract description 38
- 230000008025 crystallization Effects 0.000 claims abstract description 38
- 238000004090 dissolution Methods 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000003756 stirring Methods 0.000 description 19
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The metal nitrate crystal production line comprises a dissolution kettle, a impurity removal kettle, a filter, an evaporation kettle, a crystallization kettle, a separator, a dryer, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline; the impurity removing kettle is communicated with the dissolving kettle through a first pipeline; the filter is communicated with the impurity removing kettle through a second pipeline; the evaporation kettle is communicated with the filter through a third pipeline; the crystallization kettle is communicated with the evaporation kettle through a fourth pipeline; the separator is communicated with the crystallization kettle through a fifth pipeline; the dryer is in communication with the separator via a sixth line; the dissolution tank, the impurity removal tank, and the evaporation tank each have a heating mechanism and a cooling mechanism that are separate from each other and configured together to control the respective temperatures. Therefore, the reaction temperature can be controlled more accurately, and the phenomenon of leakage and drop of cooling crystallization can be reduced.
Description
Technical Field
The present disclosure relates to the field of metal nitrates, and more particularly to a metal nitrate crystal production line.
Background
The metal nitrate is an important inorganic chemical, has wide application in various industries such as medicine, food, agriculture, industrial building, dye, glass and the like, and has important significance in promoting the development of related industries.
In the prior art, the dissolution kettle and the evaporation kettle only adopt a single circulating water temperature control system, which is not beneficial to accurately controlling the reaction temperature, improving the reliability and stability of the quality of the metal nitrate product and further improving the yield.
In addition, in the prior metal nitrate production, oxygen is not introduced into the dissolution kettle in the dissolution reaction of the first step, so that a large amount of NO is generated X Tail gas, tail gas treatment and cost are high overall.
In addition, in the prior art, during the step of cooling and crystallizing, the metal nitrate is discharged into a container, and then the container is lifted to a refrigeration house for crystallizing, so that various operations are easy to cause leakage and drop, and the yield is reduced.
Disclosure of Invention
In view of the problems in the background art, an object of the present disclosure is to provide a metal nitrate crystal production line, which can control the reaction temperature more precisely.
It is another object of the present disclosure to provide a metal nitrate crystal production line capable of reducing the phenomenon of bleeding and driping of cooling crystals.
Thus, a metal nitrate crystal production line is provided, which comprises a dissolution kettle, a impurity removal kettle, a filter, an evaporation kettle, a crystallization kettle, a separator, a dryer, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline; the impurity removing kettle is communicated with the dissolving kettle through a first pipeline; the filter is communicated with the impurity removing kettle through a second pipeline; the evaporation kettle is communicated with the filter through a third pipeline; the crystallization kettle is communicated with the evaporation kettle through a fourth pipeline; the separator is communicated with the crystallization kettle through a fifth pipeline; the dryer is in communication with the separator via a sixth line; the dissolution tank, the impurity removal tank, and the evaporation tank each have a heating mechanism and a cooling mechanism that are separate from each other and configured together to control the respective temperatures.
The beneficial effects of the present disclosure are as follows.
Compared with the prior art that only a single circulating water temperature control system is adopted, in the metal nitrate crystal production line, the dissolution kettle, the impurity removal kettle and the evaporation kettle are respectively provided with the heating mechanism and the cooling mechanism which are separated from each other and are configured to control the respective temperatures, so that the respective reaction temperatures of the dissolution kettle, the impurity removal kettle and the evaporation kettle can be better controlled, the reaction can be further controlled more accurately, the reliability and the stability of the quality of metal nitrate products can be improved, and the yield can be further improved.
Compared with the cooling crystallization mode in the background art, in the metal nitrate crystal production line disclosed by the disclosure, the crystallization kettle is communicated with the evaporation kettle through the fourth pipeline, cooling crystallization is completed in the crystallization kettle, the solution of cooling crystallization is prevented from splashing or contacting other impurities, batch airtight production can be realized, the phenomenon of leakage and drop is reduced, and the quality of products is ensured.
Drawings
Fig. 1 is a layout diagram of a metal nitrate crystal production line according to the present disclosure.
Wherein reference numerals are explained as follows.
Third cooling water circulation mechanism of 100 metal nitrate crystal production line 43
1 third stirring paddle of dissolution kettle 44
11 first kettle body 5 crystallization kettle
12 first heater 51 fourth kettle body
13 first cooling water circulation mechanism 52 fourth cooling water circulation mechanism
14 first stirring paddle 53 fourth stirring paddle
2 edulcoration cauldron 6 separator
21 second kettle 7 dryer
22 second heater 8a first line
23 second cooling water circulation mechanism 8b second pipeline
24 second stirring paddle 8c third pipeline
3 filter 8d fourth pipeline
Fifth pipeline of 4-evaporation kettle 8e
41 third kettle 8f sixth pipeline
42 third heater
Detailed Description
The drawings illustrate embodiments of the present disclosure, and it is to be understood that the disclosed embodiments are merely examples of the disclosure that may be embodied in various forms and that, therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously practice the disclosure.
Referring to fig. 1, a metal nitrate crystal production line 100 according to the present disclosure includes a dissolution tank 1, a impurity removal tank 2, a filter 3, an evaporation tank 4, a crystallization tank 5, a separator 6, a dryer 7, a first line 8a, a second line 8b, a third line 8c, a fourth line 8d, a fifth line 8e, a sixth line 8f; the impurity removal kettle 2 is communicated with the dissolution kettle 1 through a first pipeline 8 a; the filter 3 is communicated with the impurity removing kettle 2 through a second pipeline 8 b; the evaporation kettle 4 is communicated with the filter 3 through a third pipeline 8 c; the crystallization kettle 5 is communicated with the evaporation kettle 4 through a fourth pipeline 8 d; the separator 6 is communicated with the crystallization kettle 5 through a fifth pipeline 8 e; the dryer 7 communicates with the separator 6 via a sixth line 8f; the dissolution tank 1, the impurity removal tank 2, and the evaporation tank 4 each have a heating mechanism and a cooling mechanism that are separate from each other and are arranged together to control the respective temperatures.
Compared with the prior art that only a single circulating water temperature control system is adopted, in the metal nitrate crystal production line 100 disclosed by the disclosure, the dissolution kettle 1, the impurity removal kettle 2 and the evaporation kettle 4 are respectively provided with the heating mechanism and the cooling mechanism which are separated from each other and are configured to control the respective temperatures, so that the respective reaction temperatures of the dissolution kettle 1, the impurity removal kettle 2 and the evaporation kettle 4 can be better controlled, the reaction can be further controlled more accurately, the reliability and the stability of the quality of metal nitrate products can be further improved, and the yield can be further improved.
Compared with the cooling crystallization mode in the background art, in the metal nitrate crystal production line 100 disclosed by the disclosure, the crystallization kettle 5 is communicated with the evaporation kettle 4 through the fourth pipeline 8d, cooling crystallization is completed in the crystallization kettle 5, the solution of cooling crystallization is prevented from splashing or contacting other impurities, batch airtight production can be realized, the phenomenon of running and leaking is reduced, and the quality of products is ensured.
In the metal nitrate crystal production line 100 of the present disclosure, the dissolution tank 1, the impurity removal tank 2, the filter 3, the evaporation tank 4, the crystallization tank 5, the separator 6, and the dryer 7, which are communicated with each other, are through the first line 8a, the second line 8b, the third line 8c, the fourth line 8d, the fifth line 8e, and the sixth line 8f, a closed production is realized, which is advantageous for improving the safety of the operation environment.
As shown in fig. 1, in an example, the dissolution tank 1 includes a first tank body 11, a first heater 12, and a first cooling water circulation mechanism 13, the first tank body 11 being for supplying a metal raw material, nitric acid, and water to dissolve therein and react to form a metal nitrate solution, the first heater 12 being for heating the first tank body 11 as a heating mechanism, the first cooling water circulation mechanism 13 being for cooling the first tank body 11 as a cooling mechanism, the first heater 12 and the first cooling water circulation mechanism 13 being separate from each other and configured together to control a temperature inside the first tank body 11.
The dissolution vessel 1 may be further provided with a first stirring paddle 14, and the first stirring paddle 14 is used for stirring the metal nitrate solution in the dissolution vessel 1. Specifically, the first paddles 14 are disposed in the first tank 11.
In one example, the dissolution vessel 1 is also fed with oxygen. Specifically, the first vessel 11 of the dissolution vessel 1 is fed with oxygen. The dissolution kettle 1 is filled with oxygen to carry out dissolution reaction, so that the reaction speed is increased, the emission of NOX tail gas is reduced, and the environment protection is facilitated.
As shown in fig. 1, in an example, the impurity removing tank 2 includes a second tank body 21, a second heater 22, and a second cooling water circulation mechanism 23, the second tank body 21 being in communication with the dissolution tank 1 via a first line 8a, the second tank body 21 being for a precipitant and a metal nitrate solution from the dissolution tank 1 via the first line 8a to react therein to precipitate impurities in the metal nitrate solution, the second heater 22 being for heating the second tank body 21 as a heating mechanism, the second cooling water circulation mechanism 23 being for cooling the second tank body 21 as a cooling mechanism, the second heater 22 and the second cooling water circulation mechanism 23 being separate from each other and configured together to control a temperature in the second tank body 21. Specifically, the second tank 21 communicates with the first tank 11 of the dissolution tank 1 via the first line 8 a.
In addition, the impurity removing kettle 2 can be further provided with a second stirring paddle 24, and the second stirring paddle 24 is used for stirring the precipitant and the metal nitrate solution in the impurity removing kettle 2. Specifically, the second stirring paddles 24 are disposed in the second tank 21.
In one example, the location where the first line 8a communicates with the dissolution tank 1 (specifically, the first tank 11) is higher than the location where the first line 8a communicates with the impurity removal tank 2 (specifically, the second tank 21), so that the metal nitrate solution in the dissolution tank 1 is fed to the impurity removal tank 2 by gravity via the first line 8 a. Thereby, energy consumption and cost can be reduced.
As shown in fig. 1, the filter 3 is in communication with the impurity removal tank 2 via a second line 8b, and the filter 3 is for filtering therein the purified metal nitrate solution from the impurity removal tank 2 to obtain a filtered metal nitrate solution. Specifically, the filter 3 communicates with the second tank 21 of the impurity removal tank 2 via a second line 8 b.
In one example, the portion of the second line 8b communicating with the impurity removing tank 2 (specifically, the second tank 21) is higher than the portion of the second line 8b communicating with the filter 3, so that the metal nitrate solution after impurity removal in the impurity removing tank 2 is supplied to the filter 3 through the second line 8b by overflow. Thereby, energy consumption and cost can be reduced. In addition, the low flow rate of the overflow can reduce the performance requirement of the filter 3, thereby being beneficial to reducing the cost of the filter 3.
As shown in fig. 1, in an example, the evaporation tank 4 includes a third tank body 41, a third heater 42, and a third cooling water circulation mechanism 43, the third tank body 41 being in communication with the filter 3 via a third line 8c, the third tank body 41 for evaporating and concentrating therein the filtered metal nitrate solution from the filter 3 via the third line 8c to obtain a concentrated metal nitrate solution, the third heater 42 for heating the third tank body 41 as a heating mechanism, the third cooling water circulation mechanism 43 for cooling the third tank body 41 as a cooling mechanism, the third heater 42 and the third cooling water circulation mechanism 43 being separate from each other and configured together to control a temperature inside the third tank body 41.
The evaporation tank 4 may be further provided with a third stirring paddle 44, and the third stirring paddle 44 is used for stirring the metal nitrate solution in the evaporation tank 4. Specifically, the third stirring paddles 44 are correspondingly disposed in the third tank 41.
In one example, the location where the third line 8c communicates with the filter 3 is higher than the location where the third line 8c communicates with the evaporation tank 4 (specifically, the third tank 41) so that the filtered metal nitrate solution of the filter 3 is supplied to the evaporation tank 4 via the third line 8c by overflow. Thereby, energy consumption and cost can be reduced. In addition, the low flow rate of the overflow can reduce the performance requirement of the filter 3, thereby being beneficial to reducing the cost of the filter 3.
As shown in fig. 1, in an example, the crystallization kettle 5 includes a fourth kettle body 51 and a fourth cooling water circulation mechanism 52, the fourth kettle body 51 being in communication with the evaporation kettle 4 via a fourth line 8d, the fourth kettle body 51 being for cooling and crystallizing therein the concentrated metal nitrate solution from the evaporation kettle 4 via the fourth line 8d to obtain a solution in which metal nitrate crystals are precipitated, and the fourth cooling water circulation mechanism 52 being for cooling the fourth kettle body 51. Specifically, the fourth tank 51 communicates with the third tank 41 of the evaporation tank 4 via the fourth line 8 d.
The crystallization kettle 5 may be further provided with a fourth stirring paddle 53, and the fourth stirring paddle 53 is used for stirring the concentrated metal nitrate solution crystallized in the crystallization kettle 5. Specifically, the fourth stirring paddles 53 are correspondingly disposed in the fourth tank 51.
In one example, the location where the fourth line 8d communicates with the evaporation tank 4 (specifically, the third tank 41) is higher than the location where the fourth line 8d communicates with the crystallization tank 5 (specifically, the fourth tank 51) so that the concentrated metal nitrate solution of the evaporation tank 4 is gravity fed to the crystallization tank 5 via the fourth line 8 d. Thereby, energy consumption and cost can be reduced.
As shown in fig. 1, in an example, the separator 6 is in communication with the crystallization kettle 5 via a fifth line 8e, and the separator 6 is for solid-liquid separation of a solution of precipitated metal nitrate crystals from the crystallization kettle 5 via the fifth line 8e therein to separate out the metal nitrate crystals. Specifically, the separator 6 communicates with the fourth tank 51 of the crystallization tank 5 via a fifth line 8 e.
The dryer 7 is used for drying therein the separated metal nitrate crystals from the separator 6 via a sixth line 8f to obtain a metal nitrate crystal product.
The various exemplary embodiments are described using the above detailed description, but are not intended to be limited to the combinations explicitly disclosed herein. Thus, unless otherwise indicated, the various features disclosed herein may be combined together to form a number of additional combinations that are not shown for the sake of brevity.
Claims (10)
1. A metal nitrate crystal production line is characterized in that,
the metal nitrate crystal production line (100) comprises a dissolution kettle (1), a impurity removal kettle (2), a filter (3), an evaporation kettle (4), a crystallization kettle (5), a separator (6), a dryer (7), a first pipeline (8 a), a second pipeline (8 b), a third pipeline (8 c), a fourth pipeline (8 d), a fifth pipeline (8 e) and a sixth pipeline (8 f);
the impurity removing kettle (2) is communicated with the dissolution kettle (1) through a first pipeline (8 a);
the filter (3) is communicated with the impurity removing kettle (2) through a second pipeline (8 b);
the evaporation kettle (4) is communicated with the filter (3) through a third pipeline (8 c);
the crystallization kettle (5) is communicated with the evaporation kettle (4) through a fourth pipeline (8 d);
the separator (6) is communicated with the crystallization kettle (5) through a fifth pipeline (8 e);
the dryer (7) is in communication with the separator (6) via a sixth line (8 f);
the dissolution tank (1), the impurity removal tank (2) and the evaporation tank (4) are respectively provided with a heating mechanism and a cooling mechanism which are separated from each other and are together configured to control the respective temperatures.
2. The metal nitrate crystal production line according to claim 1, wherein,
the dissolution kettle (1) comprises a first kettle body (11), a first heater (12) and a first cooling water circulation mechanism (13), wherein the first kettle body (11) is used for supplying metal raw materials, nitric acid and water to dissolve and react in the first kettle body to form metal nitrate solution, the first heater (12) is used for heating the first kettle body (11) as a heating mechanism, the first cooling water circulation mechanism (13) is used for cooling the first kettle body (11) as a cooling mechanism, and the first heater (12) and the first cooling water circulation mechanism (13) are separated from each other and are configured together to control the temperature in the first kettle body (11).
3. The metal nitrate crystal production line according to claim 1, wherein,
the impurity removing kettle (2) comprises a second kettle body (21), a second heater (22) and a second cooling water circulation mechanism (23), the second kettle body (21) is communicated with the dissolution kettle (1) through a first pipeline (8 a), the second kettle body (21) is used for allowing a precipitating agent to react with a metal nitrate solution from the dissolution kettle (1) through the first pipeline (8 a) to precipitate impurities in the metal nitrate solution, the second heater (22) is used for heating the second kettle body (21) as a heating mechanism, the second cooling water circulation mechanism (23) is used for cooling the second kettle body (21) as a cooling mechanism, and the second heater (22) and the second cooling water circulation mechanism (23) are separated from each other and are configured together to control the temperature in the second kettle body (21).
4. The metal nitrate crystal production line according to claim 1, wherein,
the filter (3) is communicated with the impurity removing kettle (2) through a second pipeline (8 b), and the filter (3) is used for filtering the impurity-removed metal nitrate solution supplied to the impurity removing kettle (2) in the impurity removing kettle so as to obtain filtered metal nitrate solution.
5. The metal nitrate crystal production line according to claim 1, wherein,
the evaporation kettle (4) comprises a third kettle body (41), a third heater (42) and a third cooling water circulation mechanism (43), the third kettle body (41) is communicated with the filter (3) through a third pipeline (8 c), the third kettle body (41) is used for evaporating and concentrating filtered metal nitrate solution from the filter (3) through the third pipeline (8 c) to obtain concentrated metal nitrate solution, the third heater (42) is used for heating the third kettle body (41) as a heating mechanism, the third cooling water circulation mechanism (43) is used for cooling the third kettle body (41) as a cooling mechanism, and the third heater (42) and the third cooling water circulation mechanism (43) are separated from each other and are configured together to control the temperature in the third kettle body (41).
6. The metal nitrate crystal production line according to claim 1, wherein,
the crystallization kettle (5) comprises a fourth kettle body (51) and a fourth cooling water circulation mechanism (52), the fourth kettle body (51) is communicated with the evaporation kettle (4) through a fourth pipeline (8 d), the fourth kettle body (51) is used for cooling and crystallizing the concentrated metal nitrate solution from the evaporation kettle (4) through the fourth pipeline (8 d) to obtain a solution for precipitating metal nitrate crystals, and the fourth cooling water circulation mechanism (52) is used for cooling the fourth kettle body (51).
7. The metal nitrate crystal production line according to claim 1, wherein,
the separator (6) is communicated with the crystallization kettle (5) through a fifth pipeline (8 e), and the separator (6) is used for solid-liquid separation of solution of precipitated metal nitrate crystals from the crystallization kettle (5) through the fifth pipeline (8 e) so as to separate out the metal nitrate crystals.
8. The metal nitrate crystal production line according to claim 1, wherein,
the dryer (7) is for drying therein the separated metal nitrate crystals from the separator (6) via a sixth line (8 f) to obtain a metal nitrate crystal product.
9. The metal nitrate crystal production line according to claim 1, wherein,
oxygen is also introduced into the dissolution kettle (1).
10. The metal nitrate crystal production line according to claim 1, wherein,
the part of the first pipeline (8 a) communicated with the dissolution kettle (1) is higher than the part of the first pipeline (8 a) communicated with the impurity removal kettle (2), so that the metal nitrate solution in the dissolution kettle (1) is fed to the impurity removal kettle (2) by gravity through the first pipeline (8 a); and/or
The position of the fourth pipeline (8 d) communicated with the evaporation kettle (4) is higher than the position of the fourth pipeline (8 d) communicated with the crystallization kettle (5), so that the concentrated metal nitrate solution of the evaporation kettle (4) is fed to the crystallization kettle (5) by gravity through the fourth pipeline (8 d); and/or
The part of the second pipeline (8 b) communicated with the impurity removing kettle (2) is higher than the part of the second pipeline (8 b) communicated with the filter (3), so that the metal nitrate solution after impurity removal in the impurity removing kettle (2) is supplied to the filter (3) through the second pipeline (8 b) by overflow; and/or
The position of the third pipeline (8 c) communicated with the filter (3) is higher than the position of the third pipeline (8 c) communicated with the evaporation kettle (4), so that the filtered metal nitrate solution of the filter (3) is supplied to the evaporation kettle (4) through the third pipeline (8 c) by overflow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311698414.1A CN117684266A (en) | 2023-12-11 | 2023-12-11 | Metal nitrate crystal production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311698414.1A CN117684266A (en) | 2023-12-11 | 2023-12-11 | Metal nitrate crystal production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117684266A true CN117684266A (en) | 2024-03-12 |
Family
ID=90136617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311698414.1A Pending CN117684266A (en) | 2023-12-11 | 2023-12-11 | Metal nitrate crystal production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117684266A (en) |
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2023
- 2023-12-11 CN CN202311698414.1A patent/CN117684266A/en active Pending
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