CN109917740A - A kind of chlorine oxidation removal of impurities intelligence control system and control method - Google Patents
A kind of chlorine oxidation removal of impurities intelligence control system and control method Download PDFInfo
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- CN109917740A CN109917740A CN201910214506.5A CN201910214506A CN109917740A CN 109917740 A CN109917740 A CN 109917740A CN 201910214506 A CN201910214506 A CN 201910214506A CN 109917740 A CN109917740 A CN 109917740A
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- chlorine
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- regulating valve
- removal
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a kind of chlorine oxidation removal of impurities intelligence control system and control methods, belong to field of metallurgy, influence continuous-stable impurity-eliminating effect and solution chemistry quality to solve the problem of that the control such as parameter is unstable in hydrometallurgy chlorine oxidation dedoping step.The system includes PLC control system, cl gas flow meter, nickelous carbonate flowmeter, detection unit, execution unit, and surveying unit includes potentiometer, pressure transmitter and pH detection meter, and execution unit includes chlorine regulating valve and nickelous carbonate regulating valve；It is provided with potentiometer in first reactive tank of removal of impurities reactor tank, potentiometer connects PLC control system by electric potential transducer；Equipped with pH detection meter, pH detection meter connection PLC control system in removal of impurities reactor tank.The data that the key of intelligent control is that the calculating prejudged in advance and setting are fed back with reaction process, end point detection are interlocked, to realize that the Precise control of chlorine oxidation dedoping step continuous-stable creates condition.
Description
Technical field
The invention belongs to field of metallurgy, and in particular to a kind of chlorine oxidation removal of impurities intelligence control system and method.
Background technique
Using reagent chlorine oxidation process net liquid except the parameter that in the impurity production processes such as iron, cobalt, lead, cleans in hydrometallurgy
It need to be controlled by adjusting the intake of reagent, at present because gaseous reagent pressure, concentration, temperature and liquid reagent pulp ratio etc. are deposited
In unstability, while the stabilization for the preceding liquid parameter that cleans has a certain impact to the control of removal of impurities process parameter, will clean
Under certain condition, chlorine oxidation reagent state modulator in a certain range, is just able to satisfy subsequent work for preceding liquid parameter stability control
Skill technical conditions.
Traditional chlorine oxidation state modulator be by manually according to chlorine oxidation agent parameter manually adjust control valve come
It realizes, personnel contact with chlorine oxidation agent operation valve zero distance, and there are the security risks such as larger poisoning, and frequently to scene adjustment
Control, Operation delay, and in the unstable situation of precondition, chlorine oxidation agent intake cannot be accurately controlled, is be easy to cause molten
The quality fluctuation and reagent dosage of liquid and environmental protection are consumed with alkali to be risen.It is heavy constantly to study chlorine oxidation for hydrometallurgy industry in recent years
The automatic control technology of shallow lake technique is only capable of developing the manually-operated Self controlling valve of substitution, but there is still a need for artificial remote operation controls
The parameter of various reagents processed is adjusted production, does not form each reagent dosage and associated technical parameters intelligent control, nothing really
Method ensures not having in the case where each parameter is unstable to manually adjust.
Summary of the invention
The object of the present invention is to provide a kind of methods of chlorine oxidation removal of impurities intelligent control, to solve in hydrometallurgy chlorine
The problem of control such as parameter is unstable during removing impurities by oxidation, influences continuous-stable impurity-eliminating effect and solution chemistry quality.
Technical solution of the present invention is as follows: a kind of chlorine oxidation removal of impurities intelligence control system, including PLC control system, chlorine
Flowmeter, nickelous carbonate flowmeter, detection unit, execution unit, surveying unit includes that potentiometer, pressure transmitter and pH detection are counted,
Execution unit includes chlorine regulating valve and nickelous carbonate regulating valve, and cl gas flow meter, chlorine regulating valve, pressure transmitter are connected and connected
PLC control system is connect, nickelous carbonate flowmeter, nickelous carbonate regulating valve connect and connect PLC control system；The of removal of impurities reactor tank
One reactive tank is provided with potentiometer, and potentiometer connects PLC control system by electric potential transducer；It is equipped in removal of impurities reactor tank
PH detection meter, pH detection meter connection PLC control system.
A kind of method of chlorine oxidation removal of impurities intelligent control, includes the following steps:
(1) potentiometer that increase checking chlorine oxidation restores in removal of impurities first slot of reactor tank, potentiometer, which passes through current potential, to be converted
Signal is uploaded to PLC control system by device, and required controlling value is arranged, when chlorine oxidation reduction potential has higher than setting value, chlorine
Gas regulating valve carries out reducing switch degree automatically, reduces chlorine oxidation agent intake；It is set when removal of impurities chlorine oxidation reduction potential is lower than
When definite value, chlorine regulating valve improves chlorine oxidation agent intake automatically；
(2) equipped with pH detection meter in removal of impurities reactor tank, while neutralization reagent nickelous carbonate flow and pH numerical value being uploaded to PLC
Control system, according to the pH value situation of change of liquid before cleaning, the intake of adjust automatically neutralization reagent, the pH value of liquid before cleaning
Stability contorting is within the scope of adapting to chlorine oxidation agent acidity, it is ensured that chlorine oxidation agent continuous-stable is passed through, and is realized continuous steady
Determine chlorine oxidation reaction to clean；
(3) carry out procedure configuration in PLC control system port, to chlorine regulating valve, potentiometer and the liquid inventory that need to clean into
The interlocking of row configuration, is prejudged according to production process chlorine oxidation reagent flow, temperature, accomplishes analytical calculation in advance；By wanting
Setting pH controlling value is sought, front end neutralization reagent flow control system is fed back to, in the range of needing to be adjusted, nickelous carbonate tune
Section valve is automatically adjusted switch degree, needed for meeting terminal pH, realizes feedback before and after overall process.
As a further improvement of the present invention, the pipe diameter of chlorine regulating valve front and back end is DN40, chlorine regulating valve
Caliber is DN40.
As a further improvement of the present invention, chlorine regulating valve is automatic interlock valve, and material type selecting is liner polytetrafluoroethyl-ne
The resistance to strong acid corrosion material of alkene.
The present invention is applied to metallurgical (chemical industry) net liquid process chlorine oxidation removing impurity by means of precipitation matter process intelligent and regulates and controls impurity removing technology
The method of parameter, this method can make the technical parameters such as current potential, pH, flow of impurity removal process stability contorting within the set range, no
Scene or the frequent operations adjustment of operation computer etc. are manually arrived, is conducive to impurity removal process continuous-stable, impurity steady decrease, and it is right
Tailing has reducing effect containing economic indicators such as main metal, environmental protection operation alkaline consumptions, realizes the operation of enterprise's high quality economic stability, together
When reduce operation various reagents valve security risk and post personnel labor intensity, optimize human resources.In wet process smelting
It can be widely applied in gold and chemical field production process.
Advantage of the present invention is as follows:
1, because the strong chlorine oxidation dosage form state that generally cleans is that gaseous state and liquid hybrid mode, measuring instrument are unable to judge accurately chlorine
Oxidizer flow rate, thus only by detailed calculated specific gravity after, then matched chlorine oxidation reagent conveyance conduit model is installed, is
Realize that intelligent control validity creates favorable conditions.
2, chlorine oxidation reagent dosage only passes through switching medium degree Self controlling valve, to adapt to the unstable stream of classes of agents
Amount, pressure, temperature condition, realize can fast, accurate adjusting that can be slow, establish solid foundation for intelligent control.
3, the key of intelligent control is the data that the calculating prejudged in advance and setting are fed back with reaction process, end point detection
It is interlocked, is just able to achieve the accurate execution of chlorine oxidation agent flux regulating valve and neutralization reagent flow control valve, to realize chlorine
The Precise control of gas removing impurities by oxidation process continuous-stable creates condition.
The application of chlorine oxidation removal of impurities intelligent control method, solution matter needed for thoroughly solving field of metallurgy high-quality product
Unstable problem is measured, by production practices more than a year, results of industrial application is good, opens new way for high quality development
Diameter.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Appended drawing reference meaning is as follows: 1- cl gas flow meter；2- nickelous carbonate flowmeter；11- chlorine regulating valve；21- nickelous carbonate
Regulating valve；12- potentiometer；13- pressure transmitter；22-pH detection meter；3- PLC control system.
Specific embodiment
The following examples can further illustrate the present invention, but do not limit the invention in any way.
The intelligence control system as shown, a kind of chlorine oxidation cleans, including PLC control system 3, cl gas flow meter 1, carbon
Sour nickel flowmeter 2, detection unit, execution unit, surveying unit includes potentiometer 12, pressure transmitter 13 and pH detection meter 22, is held
Row unit includes chlorine regulating valve 11 and nickelous carbonate regulating valve 21, cl gas flow meter 1, chlorine regulating valve 11, pressure transmitter 13
It connects and connects PLC control system 3, nickelous carbonate flowmeter 2, nickelous carbonate regulating valve 21 connect and connect PLC control system 3；?
First reactive tank of removal of impurities reactor tank is provided with potentiometer 12, and potentiometer 12 connects PLC control system by electric potential transducer
3；Equipped with 22 connection PLC control system 3 of pH detection meter 22, pH detection meter in removal of impurities reactor tank.
Embodiment 1
The reactor tank that cleans in the present embodiment is set altogether there are five reactive tank.Neutralization reagent uses nickelous carbonate.
1, by the chlorine oxidation agent operation valve nose air intake pipe diameter in metallurgical net liquid removal of impurities production process according to reality
60% or so of dosage transform matched caliber as, and chlorine caliber transform the reducer pipe and length of DN40 as according to actual production dosage
Degree is the straight pipe of the DN40 of 1.5m, installs the chlorine regulating valve of DN40 additional among direct piping.The material type selecting of the valve is
The resistance to strong acid corrosion material of inner liner polytetrafluoroethylene, valve have the function of automatic interlock feedback.
2, the potentiometer 12 that increase checking chlorine oxidation restores in removal of impurities first slot of reactor tank, potentiometer 12 pass through electricity
Signal is uploaded to the end control room PC by bit pad, and required controlling value is arranged by PLC control system 3, when chlorine oxidation also
Former current potential has when being set in trend within 0.2% higher than setting value error, and chlorine regulating valve 11 carries out reducing switch degree automatically, subtracts
Few chlorine oxidation agent intake；When the chlorine oxidation reduction potential that cleans is set within 0.2% lower than setting value error, chlorine
Regulating valve 11 improves chlorine oxidation agent intake automatically；
The nickelous carbonate regulating valve 21 and pH detection meter of neutralization reagent flow in removal of impurities reactor tank in increase checking reaction process
22, while neutralization reagent flow and pH numerical value are uploaded to the end control room PC, according to the pH value situation of change of liquid before cleaning, automatically
The intake for adjusting neutralization reagent, the pH stable of liquid controls within the scope of adapting to chlorine oxidation agent acidity before cleaning,
Ensure that chlorine oxidation agent continuous-stable is passed through, realizes that the reaction of continuous-stable chlorine oxidation cleans；
Nickelous carbonate flowmeter controls nickelous carbonate flow, realizes chain control with the pH detection meter 22 of pH value parameter 1.
Cl gas flow meter 1 controls chlorine flowrate, controls with 12 mutual linking of potentiometer of oxidation-reduction potential parameter 2.PLC
Control system relates generally to potential fluctuation early warning and pH value fluctuates early warning, ensures convenient for quickly coping with parameter between production amphibolia
Adjustment is timely.
Pressure monitoring is mainly completed by pressure transmitter 13；Chlorine flowrate is controlled by the aperture of automatic regulating valve
System；The aperture of valve feeds back to PLC control system by the voltage signal that signal feedback system is converted to 0-24V；Execution unit
Pid control parameter is set separately according to process control needs in as man-machine interface, control room personnel, system according to detection data with
Setting value is compared, and realizes that chlorine flowrate real-time intelligentization is adjusted.PID control system is that ratio, integral, differential closed loop are anti-
Present ratio control system.P is system than the stock dividends that column are adjusted, and is calculated by process data, sets P value as 2, can protect
Accelerate system adjustment speed, i.e. time difference between shortening valve switch and potential change while card system is stablized；Prevent because
Reaction efficiency mutation of pressing or clean for chlorine causes quality fluctuation.I is system integral adjustment parameter, and setting I is 0.5, can be accurate
Eliminate systematic steady state error ensures response speed simultaneously；Since proportion adjustment process can generate certain error, by integral adjustment,
Eliminate error.D is system differential adjustment parameter, reacts the inclined of the system detection potential change rate and system prediction potential change rate
Difference has foresight in advance, can appreciate that the trend of potential error variation, thus can Pre-estimation Geological, potential error also not
Before formation, which is eliminated by derivation regulating action, improves the dynamic stability of system, avoids potential value spike defeated
Out.System is adjusted by the ratio of PID, integral, differential closed loop, realizes the intelligent control of chlorine oxidation removal of impurities.
3, procedure configuration is carried out in control room PLC control system port, to chlorine regulating valve 11, potentiometer 12 and needs to clean
Liquid inventory carry out configuration interlocking, prejudged according to production process chlorine oxidation reagent flow, temperature, accomplish to analyze in advance
It calculates, creates favorable conditions for subsequent intelligent operation；PH detection meter 22 is installed additional in the last one reactive tank end, and is uploaded to
PLC control system, by require setting emphasis pH controlling value, feed back to front end neutralization reagent flow control system, need into
In the range of row adjustment, neutralization reagent flow valve is automatically adjusted needed for switch degree meets terminal pH, before realization overall process
After feed back, realize anticipation it is presetting, finally ensure clean control parameter automatic adjustment.
Claims (4)
- The intelligence control system 1. a kind of chlorine oxidation cleans, it is characterised in that: including PLC control system (3), cl gas flow meter (1), nickelous carbonate flowmeter (2), detection unit, execution unit, surveying unit includes potentiometer (12), pressure transmitter (13) and pH Detection meter (22), execution unit includes chlorine regulating valve (11) and nickelous carbonate regulating valve (21), cl gas flow meter (1), chlorine tune Section valve (11), pressure transmitter (13) are connected and are connected PLC control system (3), nickelous carbonate flowmeter (2), nickelous carbonate regulating valve (21) it connects and connects PLC control system (3)；Potentiometer (12), current potential are provided in first reactive tank of removal of impurities reactor tank It counts (12) and PLC control system (3) is connected by electric potential transducer；Equipped with pH detection meter (22), pH detection in removal of impurities reactor tank Count (22) connection PLC control system (3).
- 2. a kind of method of chlorine oxidation removal of impurities intelligent control, it is characterised in that include the following steps:A, the potentiometer (12) that increase checking chlorine oxidation restores in removal of impurities first slot of reactor tank, potentiometer (12) pass through electricity Signal is uploaded to PLC control system (3) by bit pad, and required controlling value is arranged, and is higher than when chlorine oxidation reduction potential has Setting value, chlorine regulating valve (11) carry out reducing switch degree automatically, reduce chlorine oxidation agent intake；When removal of impurities chlorine oxidation also When former current potential is lower than setting value, chlorine regulating valve (11) improves chlorine oxidation agent intake automatically；B, removal of impurities reactor tank on equipped with pH detection meter (22), while by neutralization reagent nickelous carbonate flow and pH numerical value be uploaded to PLC control system (3), according to the pH value situation of change of liquid before cleaning, the intake of adjust automatically neutralization reagent, liquid before cleaning PH stable control within the scope of adapting to chlorine oxidation agent acidity, it is ensured that chlorine oxidation agent continuous-stable is passed through, realization The reaction of continuous-stable chlorine oxidation cleans；C, procedure configuration is carried out in PLC control system (3) port, to chlorine regulating valve (11), potentiometer (12) and need to cleaned Liquid inventory carries out configuration interlocking, is prejudged according to production process chlorine oxidation reagent flow, temperature, accomplishes analysis meter in advance It calculates；By requiring setting pH controlling value, front end neutralization reagent flow control system is fed back to, in the range that needs are adjusted Interior, nickelous carbonate regulating valve (21) is automatically adjusted switch degree, needed for meeting terminal pH, realizes feedback before and after overall process.
- 3. a kind of method of chlorine oxidation removal of impurities intelligent control according to claim 2, it is characterised in that: chlorine regulating valve (11) pipe diameter of front and back end is DN40, and the caliber of chlorine regulating valve (11) is DN40.
- 4. a kind of method of chlorine oxidation removal of impurities intelligent control according to claim 3, it is characterised in that: chlorine regulating valve For automatic interlock valve, material type selecting is the resistance to strong acid corrosion material of inner liner polytetrafluoroethylene.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910214506.5A CN109917740A (en) | 2019-03-20 | 2019-03-20 | A kind of chlorine oxidation removal of impurities intelligence control system and control method |
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| CN201910214506.5A CN109917740A (en) | 2019-03-20 | 2019-03-20 | A kind of chlorine oxidation removal of impurities intelligence control system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111974329A (en) * | 2020-06-30 | 2020-11-24 | 马鞍山安鸿生物科技有限责任公司 | Control method for oxychlorination reaction in nicosulfuron production |
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| JP2012144754A (en) * | 2011-01-07 | 2012-08-02 | Sumitomo Metal Mining Co Ltd | Method for collecting bismuth |
| CN102600759A (en) * | 2012-03-23 | 2012-07-25 | 刘树伟 | Nitrogen/chlorine (argon/chlorine) mixing and proportioning system and operation method thereof |
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| CN111974329A (en) * | 2020-06-30 | 2020-11-24 | 马鞍山安鸿生物科技有限责任公司 | Control method for oxychlorination reaction in nicosulfuron production |
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Application publication date: 20190621 |
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