CN215449147U - Cyanogen ion content analysis system - Google Patents
Cyanogen ion content analysis system Download PDFInfo
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- CN215449147U CN215449147U CN202023308960.4U CN202023308960U CN215449147U CN 215449147 U CN215449147 U CN 215449147U CN 202023308960 U CN202023308960 U CN 202023308960U CN 215449147 U CN215449147 U CN 215449147U
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Abstract
The utility model relates to the field of chemical composition online analysis, and provides a cyanide ion content analysis system, which comprises an online analyzer, a first production pipeline, a second production pipeline, a first sampling loop, a second sampling loop and a rapid cooling unit, wherein the first production pipeline is connected with the first sampling loop; the first production pipeline and the second production pipeline are respectively provided with a first pump and a second pump, the inlet end of the sampling loop is connected with the rear end of the pump, and the outlet end of the sampling loop is connected with the front end of the pump; a switching valve is arranged on the sampling loop; the first sampling loop and the second sampling loop are both connected with an online analyzer; the rapid cooling unit is used for rapidly cooling the temperature of the samples in the first sampling loop and the second sampling loop to a set temperature; the reagent container and the pure water container are respectively connected with the online analyzer through pipelines. According to the utility model, through valve switching, automatic pumping of the peristaltic pump and timing automatic analysis, the production cost and consumption are reduced, the production stability is increased, and the enterprise is helped to improve the production efficiency; simple and novel structure and wide application prospect.
Description
Technical Field
The utility model relates to the field of chemical composition online analysis, in particular to a cyanide ion content analysis system.
Background
An EDTA (ethylene diamine tetraacetic acid) device belongs to continuous production operation equipment, and the cyanide ion content in a product must be analyzed and monitored on line in the operation process, so that the unqualified product caused by unstable cyanide ion content is prevented. When manual analysis is carried out, inaccurate analysis, strong randomness and serious lag of analysis data in production can be caused, the control of product quality is not facilitated, and the production cost is increased.
The cyanide ion content analysis system can be used for monitoring the content of cyanide ions on line, and is an important means for quality monitoring in the EDTA production process. The analysis system can eliminate the lag of the measured value, ensure the accuracy of continuous measurement, reduce the production cost and consumption, increase the stability of production and help enterprises to improve the production efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art and provides a cyanide ion content analysis system which can automatically extract by a peristaltic pump and automatically analyze at regular time through valve switching, thereby reducing the production cost and consumption and increasing the production stability.
The utility model adopts the following technical scheme:
a cyanide ion content analysis system comprises an online analyzer, a first production pipeline, a second production pipeline, a first sampling loop, a second sampling loop and a rapid cooling unit;
a first pump is arranged on the first production pipeline; the inlet end of the first sampling loop is connected with the rear end of the first pump, and the outlet end of the first sampling loop is connected with the front end of the first pump; a first switching valve is arranged on the first sampling loop;
a second pump is arranged on the second production pipeline; the inlet end of the second sampling loop is connected with the rear end of the second pump, and the outlet end of the second sampling loop is connected with the front end of the second pump; a second switching valve is arranged on the second sampling loop;
the first sampling loop and the second sampling loop are respectively connected with the online analyzer through sampling pipelines;
the rapid cooling unit is used for rapidly cooling the temperature of the samples in the first sampling loop and the second sampling loop to reach a set temperature.
Further, the online analyzer is provided with a peristaltic pump, and the sample in the first sampling loop or the second sampling loop is pumped to the online analyzer through the peristaltic pump.
Furthermore, a first detection pressure gauge and a second detection pressure gauge are respectively arranged on the first sampling loop and the second sampling loop. The pressure in the sample loop is controlled at 0.5-1 bar.
Further, the system also comprises a reagent container and a pure water container, wherein the reagent container and the pure water container are respectively connected with the online analyzer through pipelines.
Further, the online analyzer is a Metrohm online cyanide ion analyzer.
Further, the rapid cooling unit comprises a first cooling water tank and a second cooling water tank; and the sample in the first sampling loop enters the online analyzer after being cooled by the first cooling water tank, and the sample in the second sampling loop enters the online analyzer after being cooled by the second cooling water tank.
Furthermore, the temperature of the sample after passing through the first cooling water tank and the second cooling water tank is 40 ℃.
Furthermore, the pipeline used in the system is made of a material resistant to strong alkali and strong acid corrosion.
Further, the pipeline is made of stainless steel 316.
Further, the sample detected by the online detector flows back to the first sampling loop or the second sampling loop through a waste liquid pipeline.
Furthermore, be provided with the check valve on the waste liquid pipeline, ensure that the one-way flow back of waste liquid sampling return circuit.
Further, the system is integrated in one cabinet.
The utility model has the beneficial effects that: the sample to be measured is sampled from the rear end of the pump and returns to the front end of the pump through a sampling loop, so that no time lag is generated during sampling; switching the sample and adjusting the sample flow and pressure in the sampling loop by a switching valve; the online analyzer completes sampling of required detection quantity in the two sampling loops through the peristaltic pump, and reduces the temperature of the sample to the use requirement through the rapid cooling unit; simultaneously extracting a quantitative amount of the reagent from the reagent solvent to complete the detection; after the content of cyanide ions in the sample is measured, purified water is extracted to clean a titration bottle of the online detector so as to prevent residual sample and reagent from influencing detection precision during secondary detection, and waste liquid is discharged into a sampling loop through a one-way valve after detection and cleaning are finished; the utility model has simple structure, can reduce the production cost and consumption, increase the production stability and help enterprises to improve the production efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a system for analyzing cyanide ion content according to an embodiment of the present invention.
In the figure: 1-a first production pipeline; 2-a second production line; 3-a first pump; 4-a second pump; 5-a first switching valve; 6-a second switching valve; 7-a first detection pressure gauge; 8-a second detection pressure gauge; 9-an on-line analyzer; 10-a first cooling water tank; 11-a second cooling water tank; 12-a reagent container; 13-a pure water container; 14-one-way valve.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects.
As shown in fig. 1, a system for analyzing cyanide ion content according to an embodiment of the present invention includes an on-line analyzer 9, a first production pipeline 1, a second production pipeline 2, a first sampling loop, a second sampling loop, and a rapid cooling unit;
a first pump 3 is arranged on the first production pipeline 1; the inlet end of the first sampling loop is connected with the rear end of the first pump 3, and the outlet end of the first sampling loop is connected with the front end of the first pump 3; a first switching valve 5 is arranged on the first sampling loop; a second pump 4 is arranged on the second production line 2; the inlet end of the second sampling loop is connected with the rear end of the second pump 4, and the outlet end of the second sampling loop is connected with the front end of the second pump 4; a second switching valve 6 is arranged on the second sampling loop; according to the setting method, the sample to be measured is sampled from the rear ends of the pumps 3 and 4 and returns to the front ends of the pumps 3 and 4 through the sampling loop, so that no time lag is generated during sampling; the sample selection is switched in the first sampling loop and the second sampling loop through switching valves 5 and 6 in the sampling loops, and simultaneously, the flow rate and the pressure of the sample can be adjusted;
the first sampling loop and the second sampling loop are respectively connected with the online analyzer 9 through sampling pipelines;
the rapid cooling unit is used for rapidly cooling the temperature of the samples in the first sampling loop and the second sampling loop to reach a set temperature.
In one embodiment, the online analyzer 9 is provided with a peristaltic pump by which the sample in the first or second sampling loop is drawn into the online analyzer 9 for detection.
In one embodiment, the rapid cooling unit includes a first cooling water tank 10 and a second cooling water tank 11; the sample in the first sampling loop enters the online analyzer 9 after being cooled by the first cooling water tank 10, the sample in the second sampling loop enters the online analyzer 6 after being cooled by the second cooling water tank 11, and the temperature of the cooled sample is kept at about 40 ℃.
In the case of sample detection, a predetermined amount of reagent is simultaneously withdrawn from the reagent container 12 to complete the detection. After the cyanide ion content is measured, purified water is extracted from the pure water container 13 to clean the titration flask, so as to prevent the accuracy of later detection from being affected, and waste liquid is discharged into a sampling loop through the check valve 14 after the detection and the cleaning are finished.
In one embodiment, the first and second sampling circuits are used for collecting the sample to be tested, reducing the temperature of the sample to the temperature required by the on-line detector 9, and synchronizing the sample to be tested in the first and second production pipelines 1 and 2.
In one embodiment, the material of the pipeline must be resistant to strong alkaline corrosion and not release substances that affect the content of cyanide ions analyzed by the on-line analyzer 9, and is generally selected to be stainless steel 316.
In one embodiment, the detected sample, the detection reagent and the purified water enter the on-line analyzer 9 through respective pipelines, the content of the cyanide ions in the detected sample is determined by a silver nitrate potentiometric titration method, a silver ring electrode is taken as an indicating electrode, a silver nitrate standard solution is taken as a titrant, and the potential value of the sample continuously changes along with the addition of the titrant in the titration process, so that the content of the cyanide ions in the detected sample is obtained.
While several embodiments of the present invention have been presented herein, it will be appreciated by those skilled in the art that changes may be made to the embodiments herein without departing from the spirit of the utility model. The above examples are merely illustrative and should not be taken as limiting the scope of the utility model.
Claims (10)
1. The system for analyzing the content of cyanide ions is characterized by comprising an online analyzer, a first production pipeline, a second production pipeline, a first sampling loop, a second sampling loop and a rapid cooling unit;
a first pump is arranged on the first production pipeline; the inlet end of the first sampling loop is connected with the rear end of the first pump, and the outlet end of the first sampling loop is connected with the front end of the first pump; a first switching valve is arranged on the first sampling loop;
a second pump is arranged on the second production pipeline; the inlet end of the second sampling loop is connected with the rear end of the second pump, and the outlet end of the second sampling loop is connected with the front end of the second pump; a second switching valve is arranged on the second sampling loop;
the first sampling loop and the second sampling loop are respectively connected with the online analyzer through sampling pipelines;
the rapid cooling unit is used for rapidly cooling the samples in the first sampling loop and the second sampling loop to reach a set temperature.
2. A cyanide ion content analysis system according to claim 1, characterized in that the on-line analyzer is provided with a peristaltic pump by means of which the sample in the first or second sampling circuit is pumped to the on-line analyzer.
3. A cyanide ion content analysis system according to claim 1, wherein a first detection pressure gauge and a second detection pressure gauge are provided on the first sampling circuit and the second sampling circuit, respectively.
4. A cyanide ion content analysis system according to claim 1, further comprising a reagent container and a pure water container, which are connected to the on-line analyzer through a pipeline, respectively.
5. A cyanide ion content analysis system according to claim 1, characterized in that the on-line analyzer is a Metrohm on-line cyanide ion analyzer.
6. A cyanide ion content analysis system according to claim 1, wherein the rapid cooling unit comprises a first cooling water tank and a second cooling water tank; and the sample in the first sampling loop enters the online analyzer after being cooled by the first cooling water tank, and the sample in the second sampling loop enters the online analyzer after being cooled by the second cooling water tank.
7. A cyanide ion content analysis system according to claim 1, wherein the piping used in the system is made of a material resistant to strong alkaline corrosion.
8. A cyanide ion content analysis system according to claim 7, characterized in that the pipeline is made of stainless steel 316.
9. A cyanide ion content analysis system according to claim 1, wherein the sample detected by the on-line analyzer is returned to the first sampling circuit or the second sampling circuit through a waste liquid line.
10. A cyanide ion content analysis system according to claim 9, wherein a check valve is provided on the waste liquid line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023308960.4U CN215449147U (en) | 2020-12-30 | 2020-12-30 | Cyanogen ion content analysis system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023308960.4U CN215449147U (en) | 2020-12-30 | 2020-12-30 | Cyanogen ion content analysis system |
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| Publication Number | Publication Date |
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| CN215449147U true CN215449147U (en) | 2022-01-07 |
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| CN202023308960.4U Active CN215449147U (en) | 2020-12-30 | 2020-12-30 | Cyanogen ion content analysis system |
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| CN (1) | CN215449147U (en) |
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