CN216133011U - Combined measuring device for fluorine and chlorine element in coal by potentiometric titration method - Google Patents
Combined measuring device for fluorine and chlorine element in coal by potentiometric titration method Download PDFInfo
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- CN216133011U CN216133011U CN202121994694.7U CN202121994694U CN216133011U CN 216133011 U CN216133011 U CN 216133011U CN 202121994694 U CN202121994694 U CN 202121994694U CN 216133011 U CN216133011 U CN 216133011U
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Abstract
The utility model provides a potentiometric titration combined measuring device for fluorine and chlorine elements in coal, which belongs to the technical field of chemical detection and structurally comprises a main shell, wherein the main shell is a box body with an upper opening and a front opening, which is formed by fixedly connecting a base panel, a top plate, a left wall panel and a right wall panel, a whole magnetic stirrer is attached below the base panel, and a left deionized water beaker, a beaker of solution to be measured and a right deionized water beaker are arranged on the base panel; magnetic stirrers are arranged in the three beakers; a left electrode is configured on the left electrode rack; a right electrode is configured on the right electrode frame; the top plate is inserted with a vertical support which can be pushed forward and backward, and the vertical support is provided with a burette. The utility model combines and integrates the devices for measuring fluorine and chlorine in coal into a whole, has portable effect, can be used for measuring fluorine and chlorine in other fields, is connected with a computer and is added with software, and can directly read the results of fluorine and chlorine in a measured sample.
Description
Technical Field
The utility model relates to the technical field of chemical detection, in particular to a potentiometric titration combined measuring device for fluorine and chlorine elements in coal.
Background
In general, fluorine and chlorine contained in coal are harmful elements. Fluorine is discharged to the environment in the form of silicon tetrafluoride in the coal combustion process, so that the environment is polluted; when rainwater enters a water source, the content of fluorine in the water is too high, the health of a human body is influenced, and the fluorosis is easily obtained. Most of chlorine element is discharged as hydrogen chloride gas or toxic organic chloride in the coal combustion process, and can corrode combustion pipelines and carbonization pipelines; the release of chlorine causes problems such as corrosion of the pipes. Therefore, the determination of the fluorine and chlorine contents in the coal has received more and more attention in the aspect of environmental protection.
Common methods for measuring fluorine and chlorine include colorimetry, volumetric method and ion chromatography potentiometry. The traditional colorimetric method and volumetric method have complex operation and poor stability, are easily influenced by reagents and interfering ions, and are difficult to realize automation; the ion chromatography has high sensitivity, less used reagents and high automation degree, can simultaneously measure multiple components, but has large order difference and is inconvenient to simultaneously measure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art and provides a potentiometric titration combined measuring device for fluorine and chlorine elements in coal.
The technical scheme of the utility model is realized in the following way, the potentiometric titration combined measuring device for fluorine and chlorine elements in coal comprises a main shell (1),
the main shell (1) is formed by fixedly connecting a base panel (2), a back panel (3), a left wall panel (4) and a right wall panel (5) into an upper and front open type box body (6),
a front cover plate (27) is arranged at the front opening of the open box body (6), the front cover plate (27) adopts a double-open door (43),
a left deionized water placing area (7), a middle solution to be detected titration placing area (9) and a right deionized water placing area (11) are arranged on the base panel (2);
a left deionized water beaker (12) is arranged on the left deionized water placing area (7); a magnetic stirrer is put in the left deionized water beaker (12);
a solution beaker (14) to be detected is arranged on the middle solution placing area (9) to be detected; a magnetic stirrer is put in the beaker (14) of the solution to be measured;
a right deionized water beaker (16) is arranged on the right deionized water placing area (11); a magnetic stirrer is put in the right deionized water beaker (16);
a left mechanical arm damping telescopic sleeve fixing seat (8) is fixedly arranged on the base panel (2), a left mechanical arm damping telescopic sleeve (13) is arranged on the left mechanical arm damping telescopic sleeve fixing seat (8) in an upward extending mode, a left rotary joint (17) is arranged at the top end of the left mechanical arm damping telescopic sleeve (13), a left three-axis two-link type mechanical arm (18) is connected onto the left rotary joint (17), a left ion meter support (19) is hinged to the working end of the left three-axis two-link type mechanical arm (18), and a left electrode frame (20) is arranged on the left ion meter support (19);
a left electrode (35) is arranged on the left electrode rack (20);
a right mechanical arm damping telescopic sleeve fixing seat (10) is fixedly arranged on the base panel (2), a right mechanical arm damping telescopic sleeve (15) is arranged on the right mechanical arm damping telescopic sleeve fixing seat (10) in an upward extending mode, a right rotary joint (21) is arranged at the top end of the right mechanical arm damping telescopic sleeve (15), a right three-axis two-link mechanical arm (22) is connected onto the right rotary joint (21), a right ion meter support (23) is hinged to the working end of the right three-axis two-link mechanical arm (22), and a right electrode frame (24) is configured on the right ion meter support (23);
a right electrode (38) is arranged on the right electrode frame (24);
a vertical support (30) is inserted in the center of the back plate (3), a double-position burette clamping frame (31) is fixedly connected to the top section of the vertical support (30), and burettes (32) are respectively arranged on the double-position burette clamping frame (31);
a left ion meter host (33) is arranged at the left part of the back plate (3), and the left ion meter host (33) is connected with a left electrode (35) through a left electrode lead (34);
a right ion meter host (36) is arranged at the right part of the back plate (3), and the right ion meter host (36) is connected with a right electrode (38) through a right electrode lead (37);
an electromagnetic stirrer (45) is arranged below the base panel (2).
The left electrode (35) is configured as a double electrode;
the right bit electrode (38) is configured as a bipolar electrode.
The horizontal planes of the upper edge of the back plate (3), the upper edge of the left wall panel (4) and the upper edge of the right wall panel (5) are covered and buckled with a top cover plate (25), and the top cover plate (25) is a fully transparent panel.
The edge of the top cover plate (25) is provided with a magnetic sealing strip (26) of the top cover plate.
The front cover plate (27) where the double-opening door (43) is located is arranged on a front longitudinal plane where the front edge of the left wall panel (4), the front edge of the right wall panel (5) and the front edge of the base panel (2) are located, and the double-opening door (43) is arranged to be a fully transparent panel;
hinge turning hinges (28) are arranged between two opening edges of the double-opening door (43), the front edge of the left wall panel (4) and the front edge of the right wall panel (5).
The top edge of the double door (43) is provided with a front cover plate magnetic sealing strip (29).
The left ion meter host (33) outputs a left display lead (39), and the left display lead (39) is laid along the back plate (3) and the left wall panel (4) and is connected to a left electrode digital display screen (40) on the surface of the double-door (43);
the right ion meter host (36) outputs a right display lead (41), and the right display lead (41) is laid along the back plate (3) and the right wall panel (5) and is connected to a right electrode digital display screen (42) on the surface of the double-door (43).
Compared with the prior art, the utility model has the following beneficial effects:
the potentiometric titration method combined measuring device for fluorine and chlorine in coal provided by the utility model uses a potentiometric analysis method in the measurement of fluorine and chlorine in coal, and after fluorine is measured, chlorine is directly measured after the solution is adjusted, so that the working efficiency and accuracy of fluorine and chlorine measurement are improved, the human error in the measurement process is reduced, and the automation degree is greatly improved.
The utility model has simple and reasonable structure, convenient use, simple operation and wide application range, and is beneficial to realizing line production. The method is suitable for measuring fluorine and chlorine elements in fuels such as coal, biomass and the like.
The utility model combines and integrates the devices for measuring fluorine and chlorine in coal into a whole, has portable effect, can be used for measuring fluorine and chlorine in other fields, is connected with a computer and is added with software, and can directly read the results of fluorine and chlorine in a measured sample. The integration degree is high, and the operation is convenient.
The potentiometric titration method is a method for determining a titration end point by measuring the change of potential in the titration process, the ordinary titration method indicates the titration end point by means of the change of indicator color, and if a solution to be measured is colored or turbid, the indication of the end point is difficult, or a proper indicator cannot be found at all.
Potentiometric titration relies on a sudden jump in electrode potential to only reach the end point of the titration. Before and after titration reaches an end point, the concentration of ions to be measured in the dropping liquid continuously changes by several orders of magnitude, a potential jump is caused, and the content of a measured component is calculated by consuming the amount of the titration liquid with known concentration. Different indicating electrodes are used, and acid-base titration, precipitation titration and the like can be carried out by a point location titration method.
The method comprises the steps of adopting a direct potential method, burning and hydrolyzing a coal sample in mixed gas flow of oxygen and water vapor, converting fluorine in each coal into volatile fluoride to be dissolved in water, taking a fluorine ion selective electrode as an indicating electrode, taking a saturated calomel electrode as a reference electrode, and adding NaF standard solution by using a standard brick adding method to measure the concentration of the fluorine ions in the sample, thereby calculating the content of the fluorine in the coal.
The method comprises the steps of analyzing chlorine in coal, burning and hydrolyzing a coal sample in mixed gas flow of oxygen and water vapor by adopting a potentiometric titration method, converting the chlorine in the coal into chloride and quantitatively dissolving the chloride in water, titrating chloride ions in a solution by taking silver as an indicating electrode and silver-silver chloride as a reference electrode and a standard silver nitrate solution, and calculating the content of the chlorine in the coal according to the using amount of silver nitrate.
The environment measured by the device has no liquid junction potential, and the error caused by the liquid junction potential can be avoided.
The measured fluorine and chlorine ions are isovalent ions which do not interfere with each other under the condition of a common base solution, and the potential influences of the two ion electrodes are very close. The detection accuracy can be ensured.
The device measures the solution after the fluorine measurement by adding a certain solution with a certain concentration and then measuring the chlorine, and does not need to hydrolyze the coal sample at high temperature again. The cost is saved. And the problems of simultaneous measurement of multiple components of ion chromatography, large order difference and inconvenience in simultaneous measurement are solved.
The potentiometric titration combined measuring device for the fluorine and chlorine elements in the coal has the advantages of reasonable design, simple structure, safety, reliability, convenient use, easy maintenance and good popularization and use values.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
The reference numerals in the drawings denote:
1. a main housing, a first side wall and a second side wall,
2. a base panel 3, a back panel 4, a left wall panel 5, a right wall panel,
6. an open-type box body is arranged in the box body,
7. a left deionized water placing area, a right deionized water placing area,
8. a damping telescopic sleeve fixing seat of a left mechanical arm,
9. a titration placing area for the middle solution to be detected,
10. a damping telescopic sleeve fixing seat of the right mechanical arm,
11. a right deionized water placing area is arranged on the right,
12. a left-position deionized water beaker,
13. a damping telescopic sleeve of a left mechanical arm,
14. a beaker for the solution to be tested is provided,
15. a right-hand mechanical arm damping telescopic sleeve,
16. a right-position deionized water beaker,
17. a left rotary joint, 18, a left three-axis two-link mechanical arm, 19, a left ion meter support, 20, a left electrode frame,
21. a right rotary joint, 22, a right three-axis two-link mechanical arm, 23, a right ion meter support, 24, a right electrode frame,
25. a top cover plate 26, a magnetic sealing strip of the top cover plate,
27. a front cover plate 28, a hinge turning hinge 29, a magnetic sealing strip of the front cover plate,
30. a vertical bracket 31, a two-position burette clamping bracket 32 and a burette,
33. a left ion meter host 34, a left electrode lead 35, a left electrode,
36. a right ion meter host, 37, a right electrode lead, 38, a right electrode,
39. a left position display lead wire 40, a left position electrode digital display screen,
41. a right position display lead wire, 42, a right position electrode digital display screen,
43. the double-door structure is characterized in that a double-door structure,
44. magnetic stirrer 45, electromagnetic stirrer.
Detailed Description
The following describes in detail the apparatus for potentiometric titration of combined measurement of fluorine and chlorine in coal according to the present invention with reference to the accompanying drawings.
As shown in the attached drawing, the device for the potentiometric titration combined determination of fluorine and chlorine elements in coal comprises a main shell 1,
the main shell 1 is formed by fixedly connecting a base panel 2, a back panel 3, a left wall panel 4 and a right wall panel 5 into an upper and front open type box body 6,
a front cover plate 27 is arranged at the front opening of the open box body 6, the front cover plate 27 adopts a double-open door 43,
a left deionized water placing area 7, a middle solution to be detected titration placing area 9 and a right deionized water placing area 11 are arranged on the base panel 2;
a left deionized water beaker 12 is arranged on the left deionized water placing area 7; a magnetic stirrer is put in the left deionized water beaker 12;
a beaker 14 of the solution to be measured is arranged on the middle solution titration placing area 9; a magnetic stirrer is put in the beaker 14 of the solution to be measured;
a right deionized water beaker 16 is arranged on the right deionized water placing area 11; a magnetic stirrer is put in the right deionized water beaker 16;
a left mechanical arm damping telescopic sleeve fixing seat 8 is fixedly arranged on the base panel 2, a left mechanical arm damping telescopic sleeve 13 is arranged on the left mechanical arm damping telescopic sleeve fixing seat 8 in an upward extending mode, a left rotary joint 17 is arranged at the top end of the left mechanical arm damping telescopic sleeve 13, a left three-shaft two-link type mechanical arm 18 is connected onto the left rotary joint 17, a left ion meter support 19 is hinged to the working end of the left three-shaft two-link type mechanical arm 18, and a left electrode frame 20 is arranged on the left ion meter support 19;
a left electrode 35 is arranged on the left electrode holder 20;
a right mechanical arm damping telescopic sleeve fixing seat 10 is fixedly arranged on the base panel 2, a right mechanical arm damping telescopic sleeve 15 is arranged on the right mechanical arm damping telescopic sleeve fixing seat 10 in an upward extending mode, a right rotary joint 21 is arranged at the top end of the right mechanical arm damping telescopic sleeve 15, a right three-shaft two-link type mechanical arm 22 is connected onto the right rotary joint 21, a right ion meter support 23 is hinged to the working end of the right three-shaft two-link type mechanical arm 22, and a right electrode frame 24 is arranged on the right ion meter support 23;
a right electrode 38 is arranged on the right electrode holder 24;
a vertical support 30 is inserted in the center of the back plate 3, a double-position burette clamping frame 31 is fixedly connected to the top section of the vertical support 30, and burettes 32 are respectively arranged on the double-position burette clamping frame 31;
a left ion meter host 33 is arranged at the left part of the back plate 3, and the left ion meter host 33 is connected with a left electrode 35 through a left electrode lead 34;
a right ion meter host 36 is arranged at the right part of the back plate 3, and the right ion meter host 36 is connected with a right electrode 38 through a right electrode lead 37;
an electromagnetic stirrer (45) is arranged below the base panel (2). The electromagnetic stirrers (45) are provided with three magnetic stirrers which respectively correspond to the three beakers.
The left electrode 35 is configured as a double electrode;
the right bit electrode 38 is configured as a double electrode.
The horizontal planes on which the upper edge of the back plate 3, the upper edge of the left wall panel 4 and the upper edge of the right wall panel 5 are positioned are covered and buckled with a top cover plate 25, and the top cover plate 25 is a fully transparent panel.
The edge of the top cover plate 25 is provided with a top cover plate magnetic sealing strip 26.
The front cover plate 27 where the double door 43 is located is arranged on a front longitudinal plane where the front edge of the left wall panel 4, the front edge of the right wall panel 5 and the front edge of the base panel 2 are located, and the double door 43 is arranged to be a fully transparent panel;
hinge turning hinges 28 are provided between the two opening edges of the double door 43 and the front edges of the left wall panel 4 and the right wall panel 5.
The top edge of the double door 43 is provided with a front cover plate magnetic sealing strip 29.
The left ion meter host 33 outputs a left display lead 39, and the left display lead 39 is laid along the back plate 3 and the left wall panel 4 and connected to a left electrode digital display screen 40 on the surface of the double-door 43;
the right ion meter host 36 outputs a right display wire 41, and the right display wire 41 is laid along the back plate 3 and the right wall panel 5 and connected to a right electrode digital display screen 42 on the surface of the double-door 43.
The ion meter is a chlorine-fluorine ion meter or an ion meter provided with other ions.
After one coal sample solution is measured for fluorine, the solution is added for adjustment, and then chlorine is measured.
The utility model relates to a potentiometric titration combined measuring device for fluorine and chlorine elements in coal, wherein three solutions are all arranged in a beaker, the middle is sample liquid, deionized distilled water is arranged at two sides, magnetic stirrers are respectively arranged in the deionized distilled water and the sample liquid, and an integral electromagnetic stirrer 45 is arranged below a base panel 2.
And (4) potentiometric titration, wherein the test result is a potential value, and the potential value is calculated through a potential value difference. The calculation can be realized by linking a computer, inputting the sample mass and the like, and the sample concentration is calculated.
The design of the damping telescopic sleeve of the left mechanical arm and the damping telescopic sleeve of the right mechanical arm can enable a left electrode and a right electrode to be accommodated in the open box, and the top cover plate is covered on the sealing cover, so that the whole equipment can be conveniently accommodated, stored or carried.
And after the mechanical arm of the ion meter is tested from the solution to be tested, the mechanical arm returns to the deionized water for cleaning, and the solution is reused after the next test.
The top plate can be set as a fixing piece, and the vertical support of the burette can be designed to be pushed back and forth on the top plate, so that the solution of the burette can be dripped into the beaker of the solution to be measured.
The left electrode digital display screen, the right electrode digital display screen and the control button for setting the vertical support to move forwards or backwards can be arranged on the left wall panel and the right wall panel.
Claims (7)
1. The device for the potentiometric titration combined determination of fluorine and chlorine elements in coal is characterized by comprising a main shell (1),
the main shell (1) is formed by fixedly connecting a base panel (2), a top plate (3), a left wall panel (4) and a right wall panel (5) into an upper and front open type box body (6),
a front cover plate (27) is arranged at the front opening of the open box body (6), the front cover plate (27) adopts a double-open door (43),
a left deionized water placing area (7), a middle solution to be detected titration placing area (9) and a right deionized water placing area (11) are arranged on the base panel (2);
a left deionized water beaker (12) is arranged on the left deionized water placing area (7); a magnetic stirrer is put in the left deionized water beaker (12);
a beaker (14) of the solution to be measured is arranged on the middle solution to be measured titration placing area (9); a magnetic stirrer is put in the beaker (14) of the solution to be measured;
a right deionized water beaker (16) is arranged on the right deionized water placing area (11); a magnetic stirrer is put in the right deionized water beaker (16);
a left mechanical arm damping telescopic sleeve fixing seat (8) is fixedly arranged on the base panel (2), a left mechanical arm damping telescopic sleeve (13) is arranged on the left mechanical arm damping telescopic sleeve fixing seat (8) in an upward extending mode, a left rotary joint (17) is arranged at the top end of the left mechanical arm damping telescopic sleeve (13), a left three-axis two-link type mechanical arm (18) is connected onto the left rotary joint (17), a left ion meter support (19) is hinged to the working end of the left three-axis two-link type mechanical arm (18), and a left electrode frame (20) is arranged on the left ion meter support (19);
a left electrode (35) is arranged on the left electrode rack (20);
a right mechanical arm damping telescopic sleeve fixing seat (10) is fixedly arranged on the base panel (2), a right mechanical arm damping telescopic sleeve (15) is arranged on the right mechanical arm damping telescopic sleeve fixing seat (10) in an upward extending mode, a right rotary joint (21) is arranged at the top end of the right mechanical arm damping telescopic sleeve (15), a right three-axis two-link mechanical arm (22) is connected onto the right rotary joint (21), a right ion meter support (23) is hinged to the working end of the right three-axis two-link mechanical arm (22), and a right electrode frame (24) is configured on the right ion meter support (23);
a right electrode (38) is arranged on the right electrode frame (24);
a vertical support (30) is inserted in the center of the top plate (3), a double-position burette clamping frame (31) is fixedly connected to the top section of the vertical support (30), and burettes (32) are respectively arranged on the double-position burette clamping frame (31);
a left ion meter host (33) is arranged at the left part of the back plate (3), and the left ion meter host (33) is connected with a left electrode (35) through a left electrode lead (34);
a right ion meter host (36) is arranged at the right part of the back plate (3), and the right ion meter host (36) is connected with a right electrode (38) through a right electrode lead (37);
an electromagnetic stirrer (45) is arranged below the base panel (2).
2. The apparatus for potentiometric-titrimetric combined measurement of fluorine and chlorine in coal according to claim 1, wherein:
the left electrode (35) is configured as a double electrode;
the right bit electrode (38) is configured as a bipolar electrode.
3. The apparatus for potentiometric-titrimetric combined measurement of fluorine and chlorine in coal according to claim 1, wherein:
the horizontal planes of the upper edge of the back plate (3), the upper edge of the left wall panel (4) and the upper edge of the right wall panel (5) are covered and buckled with a top cover plate (25), and the top cover plate (25) is a fully transparent panel.
4. The apparatus for potentiometric-titrimetric combined measurement of fluorine and chlorine in coal according to claim 3, wherein:
the edge of the top cover plate (25) is provided with a magnetic sealing strip (26) of the top cover plate.
5. The apparatus for potentiometric-titrimetric combined measurement of fluorine and chlorine in coal according to claim 1, wherein:
the front cover plate (27) where the double-opening door (43) is located is arranged on a front longitudinal plane where the front edge of the left wall panel (4), the front edge of the right wall panel (5) and the front edge of the base panel (2) are located, and the double-opening door (43) is arranged to be a fully transparent panel;
hinge turning hinges (28) are arranged between two opening edges of the double-opening door (43), the front edge of the left wall panel (4) and the front edge of the right wall panel (5).
6. The apparatus for potentiometrically integrated measurement of fluorine and chlorine in coal according to claim 5, wherein: the top edge of the double door (43) is provided with a front cover plate magnetic sealing strip (29).
7. The apparatus for potentiometrically integrated measurement of fluorine and chlorine in coal according to claim 5, wherein:
the left ion meter host (33) outputs a left display lead (39), and the left display lead (39) is laid along the back plate (3) and the left wall panel (4) and is connected to a left electrode digital display screen (40) on the surface of the double-door (43);
the right ion meter host (36) outputs a right display lead (41), and the right display lead (41) is laid along the back plate (3) and the right wall panel (5) and is connected to a right electrode digital display screen (42) on the surface of the double-door (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121994694.7U CN216133011U (en) | 2021-08-23 | 2021-08-23 | Combined measuring device for fluorine and chlorine element in coal by potentiometric titration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121994694.7U CN216133011U (en) | 2021-08-23 | 2021-08-23 | Combined measuring device for fluorine and chlorine element in coal by potentiometric titration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216133011U true CN216133011U (en) | 2022-03-25 |
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ID=80771471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121994694.7U Active CN216133011U (en) | 2021-08-23 | 2021-08-23 | Combined measuring device for fluorine and chlorine element in coal by potentiometric titration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216133011U (en) |
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2021
- 2021-08-23 CN CN202121994694.7U patent/CN216133011U/en active Active
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