CN103977584A - Automatic feeding and discharging control method of copper sulfate vacuum evaporator - Google Patents
Automatic feeding and discharging control method of copper sulfate vacuum evaporator Download PDFInfo
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- CN103977584A CN103977584A CN201410197119.2A CN201410197119A CN103977584A CN 103977584 A CN103977584 A CN 103977584A CN 201410197119 A CN201410197119 A CN 201410197119A CN 103977584 A CN103977584 A CN 103977584A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses an automatic feeding and discharging control method of a copper sulfate vacuum evaporator. The method comprises the following steps: liquid feeding control, liquid discharging control, and safe operation of device. Through the control method, the copper sulfate evaporating effect is improved, the steam using amount is reduced by 50%, moreover, the circulating water in the device is pollution-free, and the method has the advantages of reliability and convenient operation.
Description
Technical field
Thereby the present invention relates to a kind ofly will on the vacuum vaporation system of imurity-removal purifying electrolysis liquid after waste electrolyte evaporation and concentration, realize the method for the control device of automatic feed and automatic discharge, belong to wet method smelting process a kind of of non-ferrous metal copper, nickel, cobalt.
Background technology
Guixi Smelter is introduced copper electrolyzing refining technology and key equipment from SUMITOMO CHEMICAL metal Co., Ltd. complete set in 1985, wherein vacuum evaporation is shell and tube siphon self-loopa vaporising device, by Japan, provide technology, domestic manufacture voluntarily, its shortcoming is after material fouling, to be difficult to cleaning, causes evaporation rate to decline rapidly, steam consumption increases, cleaning cycle is less than 3 months, and must disassemble cleaning by 5 meters of long heat exchanger tubes are whole, becomes the bottleneck that restriction is produced.
Calendar year 2001, your smelting relies on self-technique that shell and tube evaporator is transformed, and is replaced with plate-type evaporator, has solved a difficult problem for material fouling cleaning, large-scale copper smelting plant at home after this, and shell and tube copper sulphate evaporimeter progressively plate type evaporimeter replaces.
Compare with shell and tube vaporising device, plate-type evaporator cleaning is convenient, heat exchange efficiency is high, but the problems such as the pollution of the recirculated water of device and steam consumption are large, especially to there is no the medium and small copper smelting enterprise of waste heat recovery or steam source difficulty, operation cost is high, recirculated water is polluted by copper sulphate directly to discharge the major obstacle that remains restriction application.
Applicant is that Jiangxi Zhong He equipment technology Co., Ltd takes the lead in two effect plate evaporations to be applied in copper sulphate evaporation, make steam consumption reduce half, and it is not contaminated to have solved device recirculated water, the difficult problem that can directly discharge, and automatic feed and discharge control become key.
Summary of the invention
The object of the invention is to provide a kind of for the deficiencies in the prior art and provide the autocontrol method of continuous feed, continuous discharge for copper sulphate two effect vapo(u)rization systems.
Key of the present invention is:
1. full-automatic feed liquor and discharge opeing control system: adopt to be arranged on that the charge pumping signal of liquid level signal that the radar wave liquid level gauge at knockout drum top detects and variable-frequency motor control is chain realizes continuous feed;
2. plug-in type tuning fork densitometer is installed in knockout drum bottom, by resonant frequency, is changed the online concentrated solution density that detects, control positive displacement pump and realize continuous pulp discharge;
The method of the invention comprises:
(1) feed liquor is controlled
Copper sulphate stoste enters an effect evaporation knockout drum by centrifugal pump and the feed pipe driving with variable-frequency motor, when the liquid level gauge that is arranged on knockout drum top detects liquid level and approaches the liquid level of setting, pump reduces feed liquor amount by frequency conversion drive, during to limit liquid level, liquid feeding pump shuts down, no longer to an effect evaporation knockout drum liquor charging;
(2) discharge opeing is controlled
One effect evaporation knockout drum discharge opeing: detect and be concentrated to while setting density when being arranged on knockout drum Lower Half densitometer, tapping valve is opened to two effect knockout drum liquor chargings, equally when the liquid level gauge at two effect knockout drum tops detects the liquid level of liquid level arrival setting, tapping valve is closed, and an effect to the tapping valve of two effect liquor chargings is controlled by two effect knockout drum liquid levels and 2 conditions of an effect knockout drum solution density;
Two effect evaporation knockout drum discharge opeings: the solution in two effect knockout drums is when densitometer detects evaporation and concentration to setting density, signal is sent to the positive displacement pump of Frequency Converter Control, when density declines, reduce frequency and reduce draining flow, when density drops to set under discharge opeing density, prescribe a time limit, pump shuts down;
(3) safe operation of device
Set the upper and lower bound of knockout drum liquid level;
When an effect and two, imitate knockout drum liquid levels and reach in limited time, stop feed liquor;
When an effect knockout drum liquid level reaches, lower device is reported to the police and is cut off the supply of the raw steam of an effect in limited time, to avoid internal circulating load minimizing to cause that heat exchanger local temperature is too high causes corrosion;
Described control method realizes continuous control and operation automatically by PLC system;
Described liquid level gauge can be radar wave liquid level gauge;
Described densitometer can be plug-in type tuning fork densitometer.
Beneficial effect of the present invention: use this control method to make copper sulphate evaporation effect good, and steam consumption reduces half, device recirculated water does not pollute, and method is reliable, easy and simple to handle.
Accompanying drawing explanation
fig. 1 is of the present inventionthe process schematic representation of the automatic feed of copper sulphate vacuum evaporator and discharge control method;
In figure: 1. steam enters pipe, 2. an effect heats plate type heat exchanger, 3. liquid-vapor mixture tube connector, 4. one imitate vapor-liquid separation tank, 5. one imitate secondary steam pipe, 6. liquid level gauge, 7. two effects heat plate type heat exchangers, 8. two imitate vapor-liquid separation tanks, 9. mist eliminator, 10. two imitate secondary steam pipes, 11. cooling water inlet pipes, 12. water ejectors, 13. once concentration liquid discharge pipes, 14. 2 effect evaporation feed liquid circulation pipes, 15. 2 effect evaporative recirculation pumps, 16. control valves two, 17. secondary concentration liquid discharge pipes, 18. semi open model chutes, 19. finished product concentrate discharge pipes, 20. copper sulphate stoste feed pipes, 21. 1 effect evaporation feed liquid circulation pipes, 22. 1 effect evaporative recirculation pumps, 23. control valves one, 24. condensed water discharge pipes.
The specific embodiment
accompanying drawings is as follows:
The method of the invention comprises:
(1) feed liquor is controlled
Copper sulphate stoste enters an effect evaporation knockout drum by centrifugal pump and the feed pipe driving with variable-frequency motor, when the liquid level gauge that is arranged on knockout drum top detects liquid level and approaches the liquid level of setting, pump reduces feed liquor amount by frequency conversion drive, during to limit liquid level, liquid feeding pump shuts down, no longer to an effect evaporation knockout drum liquor charging;
(2) discharge opeing is controlled
One effect evaporation knockout drum discharge opeing: detect and be concentrated to while setting density when being arranged on knockout drum Lower Half densitometer, tapping valve is opened to two effect knockout drum liquor chargings, equally when the liquid level gauge at two effect knockout drum tops detects the liquid level of liquid level arrival setting, tapping valve is closed, and an effect to the tapping valve of two effect liquor chargings is controlled by two effect knockout drum liquid levels and 2 conditions of an effect knockout drum solution density
Two effect evaporation knockout drum discharge opeings: the solution in two effect knockout drums is when densitometer detects evaporation and concentration to setting density, signal is sent to the positive displacement pump of Frequency Converter Control, when density declines, reduce frequency and reduce draining flow, when density drops to set under discharge opeing density, prescribe a time limit, pump shuts down;
(3) safe operation of device
Set the upper and lower bound of knockout drum liquid level;
When an effect and two, imitate knockout drum liquid levels and reach in limited time, stop feed liquor;
When an effect knockout drum liquid level reaches, lower device is reported to the police and is cut off the supply of the raw steam of an effect in limited time, to avoid internal circulating load minimizing to cause that heat exchanger local temperature is too high causes corrosion,
Described control method realizes continuous control and operation automatically by PLC system;
Described liquid level gauge can be radar wave liquid level gauge;
Described densitometer can be plug-in type tuning fork densitometer.
Claims (1)
1. the automatic feed of copper sulphate vacuum evaporator and a discharge control method, is characterized in that:
(1) feed liquor is controlled
Copper sulphate stoste enters an effect evaporation knockout drum by centrifugal pump and the feed pipe driving with variable-frequency motor, when the liquid level gauge that is arranged on knockout drum top detects liquid level and approaches the liquid level of setting, pump reduces feed liquor amount by frequency conversion drive, during to limit liquid level, liquid feeding pump shuts down, no longer to an effect evaporation knockout drum liquor charging;
(2) discharge opeing is controlled
One effect evaporation knockout drum discharge opeing: detect and be concentrated to while setting density when being arranged on knockout drum Lower Half densitometer, tapping valve is opened to two effect knockout drum liquor chargings, equally when the liquid level gauge at two effect knockout drum tops detects the liquid level of liquid level arrival setting, tapping valve is closed, and an effect to the tapping valve of two effect liquor chargings is controlled by two effect knockout drum liquid levels and 2 conditions of an effect knockout drum solution density
Two effect evaporation knockout drum discharge opeings: the solution in two effect knockout drums is when densitometer detects evaporation and concentration to setting density, signal is sent to the positive displacement pump of Frequency Converter Control, when density declines, reduce frequency and reduce draining flow, when density drops to set under discharge opeing density, prescribe a time limit, pump shuts down;
(3) safe operation of device
Set the upper and lower bound of knockout drum liquid level;
When an effect and two, imitate knockout drum liquid levels and reach in limited time, stop feed liquor;
When an effect knockout drum liquid level reaches, lower device is reported to the police and is cut off the supply of the raw steam of an effect in limited time, to avoid internal circulating load minimizing to cause that heat exchanger local temperature is too high causes corrosion,
Described control method realizes continuous control and operation automatically by PLC system;
Described liquid level gauge can be radar wave liquid level gauge;
Described densitometer can be plug-in type tuning fork densitometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410197119.2A CN103977584B (en) | 2014-05-12 | 2014-05-12 | The automatic feed of copper sulphate vacuum evaporator and discharge control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410197119.2A CN103977584B (en) | 2014-05-12 | 2014-05-12 | The automatic feed of copper sulphate vacuum evaporator and discharge control method |
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| CN103977584A true CN103977584A (en) | 2014-08-13 |
| CN103977584B CN103977584B (en) | 2015-09-23 |
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| CN201410197119.2A Expired - Fee Related CN103977584B (en) | 2014-05-12 | 2014-05-12 | The automatic feed of copper sulphate vacuum evaporator and discharge control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597355A (en) * | 2016-01-25 | 2016-05-25 | 李庆喜 | Control method and device for liquid treatment equipment |
| CN105688432A (en) * | 2016-01-25 | 2016-06-22 | 李庆喜 | Control method and device of liquid treatment equipment |
| CN110975308A (en) * | 2019-11-29 | 2020-04-10 | 金隆铜业有限公司 | Solution concentration method |
| RU2747674C1 (en) * | 2019-12-17 | 2021-05-12 | Производственный кооператив "Конкорд" ПК "Конкорд" | Method for producing copper sulfate |
| CN113058280A (en) * | 2021-03-25 | 2021-07-02 | 湖北中烟工业有限责任公司 | Control method and device for changing one-effect to two-effect conversion of double-effect concentration |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041111A (en) * | 1988-09-16 | 1990-04-11 | 张修清 | Multifunctional evaporating equipment and liquid level controlling method |
| CN200960409Y (en) * | 2006-09-29 | 2007-10-17 | 项文远 | Evaporator with liquid level automatic controlling device |
| JP2008050229A (en) * | 2006-08-28 | 2008-03-06 | Dowa Holdings Co Ltd | Method for producing copper sulfate solution |
| CN101204634A (en) * | 2006-12-19 | 2008-06-25 | 祁颖 | Multipurpose use technology reducing evaporation steam consumption |
| CN201301235Y (en) * | 2008-06-30 | 2009-09-02 | 浙江商达环保有限公司 | Triple-effect continuous evaporative condenser |
-
2014
- 2014-05-12 CN CN201410197119.2A patent/CN103977584B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041111A (en) * | 1988-09-16 | 1990-04-11 | 张修清 | Multifunctional evaporating equipment and liquid level controlling method |
| JP2008050229A (en) * | 2006-08-28 | 2008-03-06 | Dowa Holdings Co Ltd | Method for producing copper sulfate solution |
| CN200960409Y (en) * | 2006-09-29 | 2007-10-17 | 项文远 | Evaporator with liquid level automatic controlling device |
| CN101204634A (en) * | 2006-12-19 | 2008-06-25 | 祁颖 | Multipurpose use technology reducing evaporation steam consumption |
| CN201301235Y (en) * | 2008-06-30 | 2009-09-02 | 浙江商达环保有限公司 | Triple-effect continuous evaporative condenser |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597355A (en) * | 2016-01-25 | 2016-05-25 | 李庆喜 | Control method and device for liquid treatment equipment |
| CN105688432A (en) * | 2016-01-25 | 2016-06-22 | 李庆喜 | Control method and device of liquid treatment equipment |
| CN110975308A (en) * | 2019-11-29 | 2020-04-10 | 金隆铜业有限公司 | Solution concentration method |
| CN110975308B (en) * | 2019-11-29 | 2021-09-28 | 金隆铜业有限公司 | Solution concentration method |
| RU2747674C1 (en) * | 2019-12-17 | 2021-05-12 | Производственный кооператив "Конкорд" ПК "Конкорд" | Method for producing copper sulfate |
| CN113058280A (en) * | 2021-03-25 | 2021-07-02 | 湖北中烟工业有限责任公司 | Control method and device for changing one-effect to two-effect conversion of double-effect concentration |
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| CN103977584B (en) | 2015-09-23 |
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Effective date of registration: 20210330 Address after: 335400 Guixi City Industrial Park, Yingtan, Jiangxi Patentee after: GUIXI XINHAOTAI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 335400 Guixi Industrial Park, Yingtan City, Jiangxi Province Patentee before: JIANGXI ZHONGHE EQUIPMENT TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20150923 Termination date: 20210512 |