CN103977584B - The automatic feed of copper sulphate vacuum evaporator and discharge control method - Google Patents
The automatic feed of copper sulphate vacuum evaporator and discharge control method Download PDFInfo
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- CN103977584B CN103977584B CN201410197119.2A CN201410197119A CN103977584B CN 103977584 B CN103977584 B CN 103977584B CN 201410197119 A CN201410197119 A CN 201410197119A CN 103977584 B CN103977584 B CN 103977584B
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- knockout drum
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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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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
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Abstract
A kind of copper sulphate vacuum evaporator automatic feed and discharge control method, the present invention includes the several part of safe operation of feed liquor control, discharge opeing control, device.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.
Description
Technical field
The present invention relates to and a kind of imurity-removal after waste electrolyte evaporation and concentration the vacuum vaporation system of purifying electrolysis liquid is realized the method for the control device of automatic feed and automatic discharge, belong to the one of wet method smelting process of non-ferrous metal copper, nickel, cobalt.
Background technology
Guixi Smelter introduces 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, technology is provided by Japan, domesticly manufacture voluntarily, its shortcoming is difficult to cleaning after material fouling, causes evaporation rate to decline rapidly, steam consumption increases, cleaning cycle less than 3 months, and must disassemble cleaning by whole for the heat exchanger tube of 5 meters long, becomes the bottleneck that restriction is produced.
Calendar year 2001, your smelting relies on self-technique to be transformed by shell and tube evaporator, is replaced with plate-type evaporator, solves a difficult problem for material fouling cleaning, after this large-scale copper smelting plant at home, and shell and tube copper sulphate evaporimeter progressively plate type evaporimeter replaced.
Compared with shell and tube vaporising device, plate-type evaporator cleaning is convenient, heat exchange efficiency is high, but the problems such as the recirculated water of device pollutes and steam consumption is large, especially to the medium and small cupper smelting not having waste heat recovery or steam source difficulty, operation cost is high, recirculated water pollutes the major obstacle directly can not discharged and remain restriction application by copper sulphate.
Applicant and Jiangxi crowd attach together standby Technology Co., Ltd. and take the lead in two effect plate evaporations to be applied in copper sulphate evaporation, steam consumption is made to reduce half, and it is not contaminated to solve device recirculated water, the difficult problem that can directly discharge, and automatic feed and discharge control to become crucial.
Summary of the invention
The object of the invention is to provide a kind of for the deficiencies in the prior art and imitate the autocontrol method that vapo(u)rization system provides continuous feed, continuous discharge for copper sulphate two.
Key of the present invention is:
1. full-automatic feed liquor and discharge opeing control system: the charge pumping signal that the liquid level signal adopting the radar wave liquid level gauge being arranged on knockout drum top to detect 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 change on-line checkingi concentrated solution density, controls positive displacement pump and realize continuous pulp discharge;
The method of the invention comprises:
(1) feed liquor controls
Copper sulphate stoste enters an effect evaporation knockout drum by the centrifugal pump and feed pipe being with variable-frequency motor driving, when the liquid level gauge being arranged on knockout drum top detects the liquid level of liquid level close to setting, pump reduces liquid inlet volume by frequency conversion drive, shut down to liquid feeding pump during limit liquid level, no longer to an effect evaporation knockout drum liquor charging;
(2) discharge opeing controls
One effect evaporation knockout drum discharge opeing: when be arranged on knockout drum Lower Half densitometer detect be concentrated to setting density time, tapping valve is opened to two effect knockout drum liquor chargings, equally when the liquid level gauge at two effect knockout drum tops detects that liquid level arrives the liquid level of setting, tapping valve is closed, and an effect controls to the tapping valve of two effect liquor chargings by two effect knockout drum liquid levels and an effect knockout drum solution density 2 conditions;
Two effect evaporation knockout drum discharge opeings: when the solution in two effect knockout drums detects evaporation and concentration to setting density through densitometer, 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 setting discharge opeing lower density 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 effect knockout drum liquid levels reach in limited time, stop feed liquor;
When an effect knockout drum liquid level reaches in limited time lower, device is reported to the police and is cut off the supply of the raw steam of an effect, causes that heat exchanger local temperature is too high causes corrosion to avoid internal circulating load minimizing;
Described control method realizes continuous control by PLC system and automatically runs;
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 heating plate type heat exchanger, 3. liquid-vapor mixture tube connector, 4. an effect vapor-liquid separation tank, 5. an effect secondary steam pipe, 6. liquid level gauge, 7. two effect heating plate type heat exchangers, 8. two effect vapor-liquid separation tanks, 9. mist eliminator, 10. two effect 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.
Detailed description of the invention
accompanying drawings is as follows:
The method of the invention comprises:
(1) feed liquor controls
Copper sulphate stoste enters an effect evaporation knockout drum by the centrifugal pump and feed pipe being with variable-frequency motor driving, when the liquid level gauge being arranged on knockout drum top detects the liquid level of liquid level close to setting, pump reduces liquid inlet volume by frequency conversion drive, shut down to liquid feeding pump during limit liquid level, no longer to an effect evaporation knockout drum liquor charging;
(2) discharge opeing controls
One effect evaporation knockout drum discharge opeing: when be arranged on knockout drum Lower Half densitometer detect be concentrated to setting density time, tapping valve is opened to two effect knockout drum liquor chargings, equally when the liquid level gauge at two effect knockout drum tops detects that liquid level arrives the liquid level of setting, tapping valve is closed, and an effect controls to the tapping valve of two effect liquor chargings by two effect knockout drum liquid levels and an effect knockout drum solution density 2 conditions
Two effect evaporation knockout drum discharge opeings: when the solution in two effect knockout drums detects evaporation and concentration to setting density through densitometer, 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 setting discharge opeing lower density 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 effect knockout drum liquid levels reach in limited time, stop feed liquor;
When an effect knockout drum liquid level reaches in limited time lower, device is reported to the police and is cut off the supply of the raw steam of an effect, causes that heat exchanger local temperature is too high causes corrosion to avoid internal circulating load minimizing,
Described control method realizes continuous control by PLC system and automatically runs;
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 controls
Copper sulphate stoste enters an effect evaporation knockout drum by the centrifugal pump and feed pipe being with variable-frequency motor driving, when the liquid level gauge being arranged on knockout drum top detects the liquid level of liquid level close to setting, pump reduces liquid inlet volume by frequency conversion drive, shut down to liquid feeding pump during limit liquid level, no longer to an effect evaporation knockout drum liquor charging;
(2) discharge opeing controls
One effect evaporation knockout drum discharge opeing: when be arranged on knockout drum Lower Half densitometer detect be concentrated to setting density time, tapping valve is opened to two effect knockout drum liquor chargings, equally when the liquid level gauge at two effect knockout drum tops detects that liquid level arrives the liquid level of setting, tapping valve is closed, and an effect controls to the tapping valve of two effect liquor chargings by two effect knockout drum liquid levels and an effect knockout drum solution density 2 conditions
Two effect evaporation knockout drum discharge opeings: when the solution in two effect knockout drums detects evaporation and concentration to setting density through densitometer, 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 setting discharge opeing lower density 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 effect knockout drum liquid levels reach in limited time, stop feed liquor;
When an effect knockout drum liquid level reaches in limited time lower, device is reported to the police and is cut off the supply of the raw steam of an effect, causes that heat exchanger local temperature is too high causes corrosion to avoid internal circulating load minimizing,
Described control method realizes continuous control by PLC system and automatically runs;
Described liquid level gauge is radar wave liquid level gauge;
Described densitometer is 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103977584A CN103977584A (en) | 2014-08-13 |
| CN103977584B true 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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Families Citing this family (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 |
| 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 |
| CN113058280B (en) * | 2021-03-25 | 2022-05-27 | 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1019547B (en) * | 1988-09-16 | 1992-12-23 | 张修清 | Multifunctional evaporating equipment and liquid level controlling method |
| JP4779163B2 (en) * | 2006-08-28 | 2011-09-28 | Ｄｏｗａメタルマイン株式会社 | 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 |
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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 |
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