CN214765397U - Continuous saponification device of organic extractant - Google Patents
Continuous saponification device of organic extractant Download PDFInfo
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- CN214765397U CN214765397U CN202022934888.XU CN202022934888U CN214765397U CN 214765397 U CN214765397 U CN 214765397U CN 202022934888 U CN202022934888 U CN 202022934888U CN 214765397 U CN214765397 U CN 214765397U
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Abstract
The utility model discloses an organic extractant continuous saponification device, which comprises an organic extractant elevated tank, a sodium hydroxide elevated tank, a saponification kettle, a saponification rate detection device and a controller; the organic extractant elevated tank is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected with a first liquid supplementing pipe, and a first liquid outlet pipe is arranged between the liquid outlet and the saponification kettle; a liquid inlet and a liquid outlet are arranged on the sodium hydroxide elevated tank, a second liquid supplementing pipe is connected to the liquid inlet, and a second liquid outlet pipe is arranged between the liquid outlet and the saponification kettle; a stirrer is arranged in the saponification kettle, and is connected with a stirring motor; the upper portion of saponification cauldron still is equipped with the overflow pipe, is equipped with the second sampler on the overflow pipe, and the second sampler passes through the second sampling tube and connects saponification rate detection device. Detection instruments are arranged on the first liquid outlet pipe and the second liquid outlet pipe to form closed-loop control, so that continuous measurement and adjustment are realized; the production stability is improved, the accurate control is realized, and the economic index is improved.
Description
Technical Field
The utility model belongs to the technical field of organic extraction, concretely relates to organic extractant continuous saponification device.
Background
The nickel sulfate is an important raw material in industries such as lithium batteries and electroplating, an organic solvent extraction method is generally adopted in large-scale production of the nickel sulfate, and the production industry uses P204 for impurity removal, P507 for cobalt extraction, and then processes such as washing, back extraction, regeneration and the like are carried out to remove impurities and separate nickel and cobalt, so that the purpose of purifying the nickel sulfate is achieved. In the production, the organic extractant can be recycled, and in order to obtain higher extraction efficiency, sodium hydroxide is required to be added to saponify the extractant to form sodium salt of the extractant, so that hydrogen ions are not generated in the extraction process, and therefore, in the multi-stage extraction, the extracted solution keeps a relatively stable pH value, and the single-machine extraction rate is improved. Saponification of the extractant is therefore a key technical problem in production.
For a long time, the saponification production generally adopts manual detection, and methods such as operation by experience of production personnel are adopted, so that the saponification rate is unstable, the concentration of hydrogen ions in the liquid after the saponification fluctuates, and the defects of high labor intensity, high raw material consumption, influence on extraction efficiency and the like of production operation exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides an organic extractant continuous saponification device, aim at solve present saponification production and mainly lean on the manual work to go on, intensity of labour is big, the unstable problem of saponification rate.
Therefore, the utility model adopts the following technical scheme:
a continuous saponification device for an organic extractant comprises an organic extractant elevated tank, a sodium hydroxide elevated tank, a saponification kettle, a saponification rate detection device and a controller;
the organic extractant elevated tank is provided with a liquid inlet, a liquid outlet and a first liquid level meter, the liquid inlet is connected with a first liquid supplementing pipe, and the first liquid supplementing pipe is provided with a first regulating valve; a first liquid outlet pipe is arranged between the liquid outlet and the saponification kettle, and a first flow meter and a second regulating valve are arranged on the first liquid outlet pipe; the first liquid outlet pipe is also provided with a first sampler, and the first sampler is connected with the saponification rate detection device through a first sampling pipe;
a liquid inlet, a liquid outlet and a second liquid level meter are arranged on the sodium hydroxide head tank, a second liquid supplementing pipe is connected to the liquid inlet, a third adjusting valve is arranged on the second liquid supplementing pipe, a second liquid outlet pipe is arranged between the liquid outlet and the saponification kettle, and a second flow meter and a fourth adjusting valve are arranged on the second liquid outlet pipe;
a stirrer is arranged in the saponification kettle, and a stirring motor is connected to the stirrer; the upper part of the saponification kettle is also provided with an overflow pipe, the overflow pipe is provided with a second sampler, and the second sampler is connected with a saponification rate detection device through a second sampling pipe;
the controller is respectively in signal connection with each regulating valve, the flowmeter and the liquid level meter, and is also in signal connection with the saponification rate detection device.
Furthermore, the organic extractant elevated tank and the sodium hydroxide elevated tank are made of ppH plastic or glass.
Further, the saponification kettle is made of a steel lining PTFE material.
Furthermore, the first regulating valve, the second regulating valve, the third regulating valve and the fourth regulating valve all adopt single-seat regulating valves with percentage flow characteristics, and the liquid receiving material is carbon steel lining PTFE material.
Further, the first flowmeter is a Coriolis mass flowmeter or a turbine flowmeter, and the second flowmeter is an electromagnetic flowmeter.
Furthermore, the saponification rate detection device is an NGY-BS-A type saponification rate on-line measuring instrument.
Furthermore, the controller is an NGY-BS-ZH type controller.
The beneficial effects of the utility model reside in that:
1. the sodium hydroxide elevated tank and the organic extractant elevated tank are arranged, and the liquid level heights of the two elevated tanks are automatically regulated and stabilized, so that the sodium hydroxide and the organic extractant are continuously flowed in the saponification process, and the continuous saponification is guaranteed; the elevated tank can also ensure stable outlet pressure, lays a foundation for the flow control of the saponification kettle, and on the other hand, when the sodium hydroxide and the organic extractant conveying process break down in production, the elevated tank plays a role in buffering, and the continuity of the saponification process is greatly improved.
2. The detection instruments are arranged on the first liquid outlet pipe and the second liquid outlet pipe, and the controller sends out control regulating valves according to the requirements of yield, saponification rate and the like to form closed-loop control, so that continuous measurement and regulation are realized; the production stability is improved, the labor intensity of production personnel is reduced, accurate control is realized, and the economic index is improved.
3. The on-line measuring device for the saponification rate is arranged, the hydrogen ion concentration of the liquid before the soap and the hydrogen ion concentration of the liquid after the soap are measured, the on-line detection of the saponification rate is realized, a detection signal is sent into the saponification controller, the closed-loop control of the saponification process is realized, the control precision is greatly improved, the production efficiency is improved, and the automatic control of extraction production is guaranteed.
Drawings
FIG. 1 is a control schematic diagram of the present invention;
in the figure: 1-a first liquid supplementing pipe, 2-a first regulating valve, 3-a second liquid supplementing pipe, 4-a third regulating valve, 5-an organic extractant elevated tank, 6-a first liquid level meter, 7-a second liquid level meter, 8-a sodium hydroxide elevated tank, 9-a first flowmeter, 10-a second regulating valve, 11-a first sampler, 12-a second flowmeter, 13-a fourth regulating valve, 14-a second sampler, 15-an overflow pipe, 16-a saponification kettle, 17-a stirring motor, 18-a saponification rate detection device, 19-a controller, 20-a first sampling pipe, 21-a second sampling pipe, 22-a first liquid outlet pipe and 23-a second liquid outlet pipe.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in FIG. 1, the continuous saponification device for organic extractant comprises an organic extractant elevated tank 5, a sodium hydroxide elevated tank 8, a saponification kettle 16, a saponification rate detection device 18 and a controller 19. The organic extractant elevated tank 5 and the sodium hydroxide elevated tank 8 are made of ppH plastic or glass, the saponification kettle 16 is made of steel lining PTFE material, the saponification rate detection device 18 is an NGY-BS-A type saponification rate on-line measuring instrument, and the controller 19 is an NGY-BS-ZH type controller.
The organic extractant elevated tank 5 is provided with a liquid inlet, a liquid outlet and a first liquid level meter 6, the liquid inlet is connected with a first liquid supplementing pipe 1, and the first liquid supplementing pipe 1 is provided with a first regulating valve 2. A first liquid outlet pipe 22 is arranged between the liquid outlet and the saponification kettle 16, and a first flow meter 9 and a second regulating valve 10 are arranged on the first liquid outlet pipe 22. The first liquid outlet pipe 22 is further provided with a first sampler 11, and the first sampler 11 is connected with the saponification rate detection device 18 through a first sampling pipe 20.
Be equipped with inlet, liquid outlet and second level gauge 7 on the sodium hydroxide elevated tank 8, be connected with second fluid infusion pipe 3 on the inlet, be equipped with third governing valve 4 on the second fluid infusion pipe 3, be equipped with second drain pipe 23 on the liquid outlet and between saponification cauldron 16, be equipped with second flowmeter 12 and fourth governing valve 13 on the second drain pipe 23.
A stirrer is arranged in the saponification kettle 16, and a stirring motor 17 is connected to the stirrer. The upper part of the saponification kettle 16 is also provided with an overflow pipe 15, the overflow pipe 15 is provided with a second sampler 14, and the second sampler 14 is connected with a saponification rate detection device 18 through a second sampling pipe 21. The controller 19 is respectively connected with the regulating valve, the flowmeter and the liquid level meter by signals, and the controller 19 is also connected with the saponification rate detection device 18 by signals. The first regulating valve 2, the second regulating valve 10, the third regulating valve 4 and the fourth regulating valve 13 are all single-seat regulating valves with percentage flow characteristics, the liquid receiving material is carbon steel lining PTFE material, the first flowmeter 9 is a Coriolis force mass flowmeter or a turbine flowmeter, and the second flowmeter 12 is an electromagnetic flowmeter.
A continuous saponification control method for an organic extractant uses the continuous saponification device for the organic extractant:
(1) inputting a numerical value: first, a controller 19 is provided with a target value SV for controlling the liquid level height of the organic extractant head tank 5, a target value SV1 for controlling the liquid level height of the sodium hydroxide head tank 8, an energy value Q for saponification amount, and a target value ε SV for saponification rate.
(2) Liquid level regulation: the controller 19 sends out a control signal DO, the stirring motor 17 is started, and the stirring motor 17 drives the stirrer to rotate, so that the reaction is accelerated. The MV signal is obtained by PID operation of the measured value PV and the target value SV of the first liquid level meter 6 on the organic extractant high-level tank 5 and is transmitted to the first regulating valve 2 to regulate the opening degree of the first regulating valve 2, thereby realizing closed-loop regulation and stabilizing the liquid level height of the organic extractant. And a MV1 signal is obtained by PID operation of a measured value PV1 of the second liquid level meter 7 on the sodium hydroxide head tank 8 and a target value SV1, and is transmitted to the third regulating valve 4 to regulate the opening degree of the third regulating valve 4, thereby realizing closed-loop regulation and stabilizing the liquid level height of the sodium hydroxide.
(3) Adjusting the saponification rate: the saponification rate detection device 18 detects the hydrogen ion concentration a before the soap and the hydrogen ion concentration a1 after the soap on line, and calculates the measured value of the saponification rate epsilonpv according to the following formula:
the saponification rate measured value signal Epsilon PV is transmitted to the controller 19 and is compared with the saponification rate target value Epsilon SV to obtain a deviation signal DeltaEpsilon; the controller 19 calculates an organic extractant flow rate given signal SV2 and a sodium hydroxide flow rate given signal SV3 according to the set yield value Q, the magnitude and the direction of the saponification rate deviation signal Delta epsilon.
The SV2 signal and a first flowmeter 9 measurement signal PV2 are subjected to PID operation to obtain an organic extractant flow control signal MV2, and the organic extractant flow control signal MV2 is transmitted to the second regulating valve 10 to control the opening of the valve, so that the flow control of the organic extractant is realized; the SV3 signal and the second flowmeter 12 measurement signal PV3 are subjected to PID operation to obtain a sodium hydroxide solution flow control signal MV3, and the sodium hydroxide solution flow control signal MV3 is transmitted to the fourth regulating valve 13 to control the opening of the valve, so that the sodium hydroxide solution flow control is realized.
It should be noted that the above are only some embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (7)
1. A continuous saponification device for an organic extractant is characterized by comprising an organic extractant elevated tank (5), a sodium hydroxide elevated tank (8), a saponification kettle (16), a saponification rate detection device (18) and a controller (19);
a liquid inlet, a liquid outlet and a first liquid level meter (6) are arranged on the organic extractant elevated tank (5), a first liquid supplementing pipe (1) is connected to the liquid inlet, and a first regulating valve (2) is arranged on the first liquid supplementing pipe (1); a first liquid outlet pipe (22) is arranged between the liquid outlet and the saponification kettle (16), and a first flowmeter (9) and a second regulating valve (10) are arranged on the first liquid outlet pipe (22); the first liquid outlet pipe (22) is also provided with a first sampler (11), and the first sampler (11) is connected with a saponification rate detection device (18) through a first sampling pipe (20);
a liquid inlet, a liquid outlet and a second liquid level meter (7) are arranged on the sodium hydroxide head tank (8), a second liquid supplementing pipe (3) is connected to the liquid inlet, a third adjusting valve (4) is arranged on the second liquid supplementing pipe (3), a second liquid outlet pipe (23) is arranged between the liquid outlet and the saponification kettle (16), and a second flow meter (12) and a fourth adjusting valve (13) are arranged on the second liquid outlet pipe (23);
a stirrer is arranged in the saponification kettle (16), and a stirring motor (17) is connected to the stirrer; the upper part of the saponification kettle (16) is also provided with an overflow pipe (15), the overflow pipe (15) is provided with a second sampler (14), and the second sampler (14) is connected with a saponification rate detection device (18) through a second sampling pipe (21);
the controller (19) is respectively in signal connection with the first regulating valve (2), the second regulating valve (10), the third regulating valve (4), the fourth regulating valve (13), the flowmeter and the liquid level meter, and the controller (19) is also in signal connection with the saponification rate detection device (18).
2. The continuous saponification device for organic extractant according to claim 1, wherein the organic extractant elevated tank (5) and the sodium hydroxide elevated tank (8) are made of ppH plastic or glass.
3. The continuous saponification device for organic extractant according to claim 1, wherein the saponification kettle (16) is made of steel-lined PTFE material.
4. The continuous saponification device for organic extractant according to claim 1, wherein the first regulating valve (2), the second regulating valve (10), the third regulating valve (4) and the fourth regulating valve (13) are all single-seat regulating valves with percentage flow characteristics, and the liquid receiving material is carbon steel lining PTFE material.
5. The continuous saponification device for organic extractant according to claim 1, wherein the first flowmeter (9) is a Coriolis mass flowmeter or a turbine flowmeter, and the second flowmeter (12) is an electromagnetic flowmeter.
6. The apparatus for continuously saponifying an organic extractant according to claim 1, wherein said saponification rate detecting means (18) is an NGY-BS-A type saponification rate on-line measuring instrument.
7. The apparatus for continuous saponification of organic extractant according to claim 1, wherein the controller (19) is an NGY-BS-ZH type controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022934888.XU CN214765397U (en) | 2020-12-09 | 2020-12-09 | Continuous saponification device of organic extractant |
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| CN202022934888.XU CN214765397U (en) | 2020-12-09 | 2020-12-09 | Continuous saponification device of organic extractant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495330A (en) * | 2020-12-09 | 2021-03-16 | 金川集团股份有限公司 | Continuous saponification device for organic extractant and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495330A (en) * | 2020-12-09 | 2021-03-16 | 金川集团股份有限公司 | Continuous saponification device for organic extractant and control method |
| CN112495330B (en) * | 2020-12-09 | 2023-11-21 | 金川集团股份有限公司 | Organic extractant continuous saponification device and control method |
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