CN117451774A - Ammonium nitrate solution crystallization point measuring device - Google Patents
Ammonium nitrate solution crystallization point measuring device Download PDFInfo
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- CN117451774A CN117451774A CN202311513270.8A CN202311513270A CN117451774A CN 117451774 A CN117451774 A CN 117451774A CN 202311513270 A CN202311513270 A CN 202311513270A CN 117451774 A CN117451774 A CN 117451774A
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- explosion
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- electric valve
- ammonium nitrate
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- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000002425 crystallisation Methods 0.000 title claims abstract description 31
- 230000008025 crystallization Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000011010 flushing procedure Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 52
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 4
- 239000002360 explosive Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses an ammonium nitrate solution crystallization point measuring device which comprises a measuring tank, wherein a liquid inlet pipeline is fixed at the top of the measuring tank, a steam pipeline is fixed on the surface of the liquid inlet pipeline, a water flushing pipe is fixed on the surface of the steam pipeline, a return pipe is fixed at the bottom of the side wall of the measuring tank, a pressure relief pipe is fixed on the lower surface of the return pipe, a magnetic stirrer is arranged at the inner bottom of the measuring tank, a magnetic stirrer main body is arranged at the bottom of the measuring tank, a temperature sensor and a liquid level sensor are respectively fixed at the top of the measuring tank and at the periphery of the liquid inlet pipeline, and turbidity meters are symmetrically fixed on the side wall of the measuring tank. The invention can carry out remote control measurement without needing near operation of workers in the measurement process, can automatically complete detection by utilizing an automatic control system and a program in the whole detection process, has no unmanned operation, and can eliminate errors caused by manual measurement and dangerous points which need to be contacted with high-temperature solution in the manual measurement.
Description
Technical Field
The invention relates to the technical field of testing devices, in particular to an ammonium nitrate solution crystallization point measuring device.
Background
The industrial explosive has the characteristics of low cost, simple manufacture, reliable application and the like, is widely applied to the fields of mining, civil engineering, geological exploration, oilfield drilling, explosion processing and the like, and is one of the energy sources indispensable to national economy.
At present, in the production process of China, the raw materials mainly adopt ammonium nitrate as an oxidant, the production of industrial explosive is carried out through different production processes after the ammonium nitrate solution is mixed with other materials, and most manufacturers begin to directly purchase high-concentration ammonium nitrate solution from the manufacturers as the production raw materials due to developed transportation; the concentration of the ammonium nitrate solution needs to be detected both during production and during raw material purchase. For purchase as raw material, the crystallization point directly reflects the concentration of the ammonium nitrate solution without adding any other material; for some explosive production processes, the crystallization point of the ammonium nitrate solution added with other additives is also controlled as an important technical parameter. However, at present, the crystallization point of the ammonium nitrate solution is mainly manually tested, the high temperature in the testing process easily brings safety risks, the ammonium nitrate solution is easily crystallized due to the temperature reduction in the material receiving process, meanwhile, the subjectivity factors existing in the manual test are too many, the accuracy is not high, and improvement is needed, so that the measuring device for the crystallization point of the ammonium nitrate solution is designed.
Disclosure of Invention
Based on the technical problems in the background technology, the invention provides an ammonium nitrate solution crystallization point measuring device.
The invention provides an ammonium nitrate solution crystallization point measuring device, which comprises a measuring tank, wherein a liquid inlet pipeline is fixed at the top of the measuring tank, a steam pipeline is fixed on the surface of the liquid inlet pipeline, a water flushing pipe is fixed on the surface of the steam pipeline, a return pipe is fixed at the bottom of the side wall of the measuring tank, a pressure relief pipe is fixed on the lower surface of the return pipe, a magnetic stirrer is arranged at the inner bottom of the measuring tank, a magnetic stirrer main body is arranged at the bottom of the measuring tank, a temperature sensor and a liquid level sensor are respectively fixed at the top of the measuring tank and at the periphery of the liquid inlet pipeline, and turbidity meters are symmetrically fixed at the side wall of the measuring tank;
the inside configuration of feed liquor pipeline has first explosion-proof electric valve, the inside configuration of steam pipeline has the explosion-proof electric valve of second, the inside configuration of water flushing pipe has the explosion-proof electric valve of third, the inside of back flow is equipped with the explosion-proof electric valve of fourth, the inside of pressure release pipe is equipped with the explosion-proof electric valve of fifth.
Preferably, the filter screen is fixed on the inner side wall of the liquid inlet pipeline in a sealing mode, the filter screen is located between the first explosion-proof electric valve and the water flushing pipe, and the filter screen is fixed on the connecting part of the pressure release pipe and the measuring tank in a sealing mode.
Preferably, the surface of the measuring tank is fixedly provided with an observation window.
The method for measuring the crystallization point of the ammonium nitrate solution comprises the following steps:
s1, firstly, opening a first explosion-proof electric valve and a fourth explosion-proof electric valve, opening a material pumping motor, and starting a flow test;
after S2-ammonium nitrate solution enters a measuring tank, the temperature of the fed ammonium nitrate solution is suddenly reduced to reduce the temperature of the ammonium nitrate solution, partial solution starts crystallization, however, in the process of continuously circulating the solution, the temperature of the measuring tank is gradually increased, precipitated crystals are melted again until the temperature of the measuring tank is increased to be the same as the temperature of the ammonium nitrate solution, heat preservation or other heating measures are not needed in the subsequent process, the heating condition and the solution state of the measuring tank can be observed through a tank body observation window and a temperature sensor in the recycling process, the ammonium nitrate solution is ensured to be in a stable state to be detected before detection, and the subsequent detection error is reduced;
s3-closing a first explosion-proof electric valve, a fourth explosion-proof electric valve and a material pumping motor, opening a magnetic stirrer, stirring the solution, automatically starting to monitor the turbidity data of the solution by a turbidity meter, and collecting the material temperature and the turbidity value of the solution without crystallization when the material conveying pump is closed by the turbidity meter, so that the condition of the ammonium nitrate solution at the moment can not influence the subsequent measurement;
s4-ammonium nitrate solution temperature can be gradually reduced in the stirring process, a temperature sensor continuously monitors and records the solution temperature, the solution temperature is reduced to a crystallization point, turbidity values are sent to be changed drastically, meanwhile, a program automatically records the temperature and the turbidity values when the turbidity of the solution is changed drastically when the turbidity data is sent to be changed drastically, and after the turbidity data is sent to be changed drastically, a system sends a prompt to remind that measurement is finished;
s5-after the system prompts to finish the test, cleaning the measuring tank, opening a second explosion-proof electric valve, connecting a steam pipeline, opening a fourth explosion-proof electric valve, discharging and purging the solution in the measuring tank, closing the fourth explosion-proof electric valve, opening a fifth explosion-proof electric valve, connecting a pressure release pipe, opening a third explosion-proof electric valve again, connecting a water flushing pipe, flushing the measuring tank, discharging the cleaned sewage from the pressure release pipe, closing the third explosion-proof electric valve after the flushing is finished, purging the measuring tank by introducing steam again, cleaning the measuring tank, and finally closing the second explosion-proof valve, the third explosion-proof valve and the fifth explosion-proof valve
Preferably, the turbidity value initially collected by the turbidity meter in the S3 test is within 0-200FTU, and when the turbidity value collected by the turbidity meter in the S4 test is increased to above 2000FTU, the system sends out a prompt to finish the test.
Compared with the prior art:
1. the beneficial technical effects of the invention are as follows: the whole detection process can automatically complete detection by utilizing an automatic control system and a program, the field can be free from human intervention, and the whole system can eliminate errors caused by manual measurement and dangerous points which need to be contacted with high-temperature solution during manual measurement.
2. The detection device can also be operated manually,
drawings
Fig. 1 is a schematic structural diagram of an ammonium nitrate solution crystallization point measuring device provided by the invention.
Fig. 2 is a schematic structural diagram of a device for measuring crystallization points of ammonium nitrate solution according to the present invention.
Fig. 3 is a flowchart illustrating the operation of the apparatus for measuring crystallization point of ammonium nitrate solution according to the present invention.
In the figure: 1. the first explosion-proof electric valve; 2. a liquid inlet pipe; 3. a temperature sensor; 4. a fourth explosion-proof electric valve; 5. a return pipe; 6. a fifth explosion-proof electric valve; 7. a pressure relief tube; 8. a filter screen; 9. the third explosion-proof electric valve; 10. a water flushing pipe; 11. a steam pipe; 12. the second explosion-proof electric valve; 13. a liquid level sensor; 14. a turbidity meter; 15. a magnetic stirrer; 16. a testing device body; 17. a magnetic stirrer body; 18. and an observation window.
Detailed Description
The embodiment 1 of the device for measuring the crystallization point of the ammonium nitrate solution comprises a measuring tank, wherein a liquid inlet pipeline is fixed at the top of the measuring tank, a steam pipeline is fixed on the surface of the liquid inlet pipeline, a water flushing pipe is fixed on the surface of the steam pipeline, a return pipe is fixed at the bottom of the side wall of the measuring tank, a pressure relief pipe is fixed on the lower surface of the return pipe, a magnetic stirrer is arranged at the inner bottom of the measuring tank, a magnetic stirrer main body is arranged at the bottom of the measuring tank, a temperature sensor and a liquid level sensor are respectively fixed at the top of the measuring tank and at the periphery of the liquid inlet pipeline, turbidity meters are symmetrically fixed on the side wall of the measuring tank, and when the device is installed, the liquid inlet pipeline and the return pipe are connected and communicated with the ammonium nitrate storage tank, the device is directly installed and fixed outside the ammonium nitrate storage tank, the device can be removed after the measurement is completed, and two connecting pipes for the ammonium nitrate storage tank are provided with pump for pressure supply;
the inside configuration of feed liquor pipeline has first explosion-proof electric valve, and the inside configuration of steam pipeline has second explosion-proof electric valve, and the inside configuration of water flushing pipe has third explosion-proof electric valve, and the inside of back flow is equipped with fourth explosion-proof electric valve, and the inside of pressure release pipe is equipped with fifth explosion-proof electric valve.
The inside wall encapsulation of feed liquor pipeline is fixed with the filter screen, and the filter screen is located between first explosion-proof electric valve and the water flushing pipe, and the junction encapsulation between pressure release pipe and the measurement jar is fixed with the filter screen.
The surface of the measuring tank is fixedly provided with an observation window.
The method for measuring the crystallization point of the ammonium nitrate solution comprises the following steps:
s1, firstly, opening a first explosion-proof electric valve and a fourth explosion-proof electric valve, opening a material pumping motor, and starting a flow test;
after S2-ammonium nitrate solution enters a measuring tank, the temperature of the fed ammonium nitrate solution is suddenly reduced to reduce the temperature of the ammonium nitrate solution, partial solution starts crystallization, however, in the process of continuously circulating the solution, the temperature of the measuring tank is gradually increased, precipitated crystals are melted again until the temperature of the measuring tank is increased to be the same as the temperature of the ammonium nitrate solution, heat preservation or other heating measures are not needed in the subsequent process, the heating condition and the solution state of the measuring tank can be observed through a tank body observation window and a temperature sensor in the recycling process, the ammonium nitrate solution is ensured to be in a stable state to be detected before detection, and the subsequent detection error is reduced;
s3-closing a first explosion-proof electric valve, a fourth explosion-proof electric valve and a material pumping motor, opening a magnetic stirrer, stirring the solution, automatically starting to monitor the turbidity data of the solution by a turbidity meter, and collecting the material temperature and the turbidity value of the solution without crystallization by the turbidity meter while closing a material conveying pump, wherein the turbidity value is 50FTU;
s4-ammonium nitrate solution temperature can gradually decrease in the stirring process, a temperature sensor continuously monitors and records the solution temperature, the solution temperature decreases to a crystallization point, turbidity values are sent to be changed drastically (the values can be increased to be more than 2000 FTU), meanwhile, a program automatically records the temperature and the turbidity values when the turbidity of the solution is changed drastically, and after the turbidity data is sent to be changed drastically, a system sends a prompt to remind the end of measurement; s5-after the system prompts to finish the test, cleaning the measuring tank, opening a second explosion-proof electric valve, connecting a steam pipeline, opening a fourth explosion-proof electric valve, discharging and purging the solution in the measuring tank, closing the fourth explosion-proof electric valve, opening a fifth explosion-proof electric valve, connecting a pressure relief pipe, opening a third explosion-proof electric valve, connecting a water flushing pipe, flushing the measuring tank, discharging the cleaned sewage from the pressure relief pipe, closing the third explosion-proof electric valve after the cleaning, purging the measuring tank by introducing steam again, and finally closing the second explosion-proof valve, the third explosion-proof valve and the fifth explosion-proof valve.
And S3, when the turbidity value acquired by the turbidity meter is higher than 2000FTU, the system sends out a prompt to finish the test, and when the turbidity value is higher than 2000FTU, the crystallization amount of the test solution is larger, so that the subsequent cleaning is convenient, and the test is set to be stopped.
Example 2: the method steps are the same as in example 1, and the different process parameters are as follows: s3, the initial turbidity value acquired by the turbidity meter is 150FTU;
example 3: the method steps are the same as in example 1, and the different process parameters are as follows: s3, the initial turbidity value acquired by the turbidity meter is 200FTU.
Claims (5)
1. The ammonium nitrate solution crystallization point measuring device is characterized by comprising a measuring tank, wherein a liquid inlet pipeline is fixed at the top of the measuring tank, a steam pipeline is fixed on the surface of the liquid inlet pipeline, a water flushing pipe is fixed on the surface of the steam pipeline, a return pipe is fixed at the bottom of the side wall of the measuring tank, a pressure relief pipe is fixed on the lower surface of the return pipe, a magnetic stirrer is arranged at the inner bottom of the measuring tank, a magnetic stirrer main body is arranged at the bottom of the measuring tank, a temperature sensor and a liquid level sensor are respectively fixed at the top of the measuring tank and at the periphery of the liquid inlet pipeline, and turbidity meters are symmetrically fixed on the side wall of the measuring tank;
the inside configuration of feed liquor pipeline has first explosion-proof electric valve, the inside configuration of steam pipeline has the explosion-proof electric valve of second, the inside configuration of water flushing pipe has the explosion-proof electric valve of third, the inside of back flow is equipped with the explosion-proof electric valve of fourth, the inside of pressure release pipe is equipped with the explosion-proof electric valve of fifth.
2. The ammonium nitrate solution crystallization point measuring device according to claim 1, wherein a filter screen is fixedly packaged on the inner side wall of the liquid inlet pipeline, the filter screen is positioned between the first explosion-proof electric valve and the water flushing pipe, and the filter screen is fixedly packaged at the joint between the pressure relief pipe and the measuring tank.
3. The apparatus for measuring crystallization point of ammonium nitrate solution according to claim 1, wherein an observation window is fixedly installed on the surface of the measuring tank.
4. A method for measuring crystallization point of ammonium nitrate solution according to any one of claims 1-3, characterized in that the method comprises the following steps:
s1, sequentially opening a first explosion-proof electric valve and a fourth explosion-proof electric valve, opening a material pumping motor, and starting a flow test;
after S2-ammonium nitrate solution enters a measuring tank, the temperature of the fed ammonium nitrate solution is suddenly reduced to reduce the temperature of the ammonium nitrate solution, partial solution starts crystallization, however, in the process of continuously circulating the solution, the temperature of the measuring tank is gradually increased, precipitated crystals are melted again until the temperature of the measuring tank is increased to be the same as the temperature of the ammonium nitrate solution, heat preservation or other heating measures are not needed in the subsequent process, the heating condition and the solution state of the measuring tank can be observed through a tank body observation window and a temperature sensor in the recycling process, the ammonium nitrate solution is ensured to be in a stable state to be detected before detection, and the subsequent detection error is reduced;
s3-closing a first explosion-proof electric valve, a fourth explosion-proof electric valve and a material pumping motor, opening a magnetic stirrer, stirring the solution, automatically starting to monitor the turbidity data of the solution by a turbidity meter, and collecting the material temperature and the turbidity value of the solution without crystallization when the material conveying pump is closed by the turbidity meter, so that the condition of the ammonium nitrate solution at the moment can not influence the subsequent measurement;
s4-ammonium nitrate solution temperature can be gradually reduced in the stirring process, a temperature sensor continuously monitors and records the solution temperature, the solution temperature is reduced to a crystallization point, turbidity values are sent to be changed drastically, meanwhile, a program automatically records the temperature and the turbidity values when the turbidity of the solution is changed drastically when the turbidity data is sent to be changed drastically, and after the turbidity data is sent to be changed drastically, a system sends a prompt to remind that measurement is finished;
s5-after the system prompts to finish the test, cleaning the measuring tank, opening a second explosion-proof electric valve, connecting a steam pipeline, opening a fourth explosion-proof electric valve, discharging and purging the solution in the measuring tank, closing the fourth explosion-proof electric valve, opening a fifth explosion-proof electric valve, connecting a pressure relief pipe, opening a third explosion-proof electric valve, connecting a water flushing pipe, flushing the measuring tank, discharging the cleaned sewage from the pressure relief pipe, closing the third explosion-proof electric valve after the cleaning, purging the measuring tank by introducing steam again, and finally closing the second explosion-proof valve, the third explosion-proof valve and the fifth explosion-proof valve.
5. The method for measuring crystallization point of ammonium nitrate solution according to claim 4, wherein the turbidity value initially collected by the turbidity meter in the S3 test is within 0-200FTU, and the system sends out a prompt to end the test when the turbidity value collected by the turbidity meter in the S4 test is raised to above 2000 FTU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311513270.8A CN117451774A (en) | 2023-11-14 | 2023-11-14 | Ammonium nitrate solution crystallization point measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311513270.8A CN117451774A (en) | 2023-11-14 | 2023-11-14 | Ammonium nitrate solution crystallization point measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117451774A true CN117451774A (en) | 2024-01-26 |
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ID=89594677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311513270.8A Pending CN117451774A (en) | 2023-11-14 | 2023-11-14 | Ammonium nitrate solution crystallization point measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117451774A (en) |
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2023
- 2023-11-14 CN CN202311513270.8A patent/CN117451774A/en active Pending
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