Thyristor Rectifier For Chlor Alkali Electrolysis Gold Silver Copper Zinc Lead Electrowinning Non-ferrous Metals Electrolytic

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Thyristor Rectifier For Chlor Alkali Electrolysis Gold Silver Copper Z...
Posting date : Dec 20, 2016
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Free Member Scince Nov 03, 2016
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China [CN]
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Thyristor Rectifier For Chlor Alkali Electrolysis Gold Silver Copper Zinc Lead Electrowinning Non-ferrous Metals Electrolytic,SCR Rectifier
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Detailed Description
SCR rectifier for electrolytic process application areaRectifiers for Electrowinning, Electrolytic RefiningHigh capacity, high current dc power supply is applied to the production of high purity 99.9% cathode copper through Electrowinning, also called electroextraction, is the electrodeposition of metals from their ores that have been put in solution via a process commonly referred to as leaching. Electrolytic refining uses a similar process to remove impurities from a metal. Both processes use electroplating on a large scale and are important techniques for the economical and straightforward purification of non-ferrous metals. The method that to increase the purity of the metal using electrolysis, is putting two electrodes into the electrolytic solution, base metal of low purity metal as the anode and suitable metal thin plate as the cathode, and to flow the current and then a high purity metal is precipitated on the negative electrode plate, and impurities is removed. The metals can be treated with electrolytic refining, are copper, zinc, lead, gold, silver, aluminum, antimony, tin, nickel, bismuth, uranium, beryllium, vanadium, and the like.   SCR power supplies rectifier for Electrolysis, Electrochlorination in Chemical PlantRectifier thyristor technology for producing sodium hydroxide (NaOH) and chlorine gas (Cl2) from the brine makes use of electrolysis method, Electrolysis of ion-exchange membrane caustic soda, chlorine gas is generated at the anode and caustic soda is made and hydrogen gas is generated simultaneously at the cathode, for this CA (Chlor-Alkali) process, high-capacity special power supply is required for the purpose of effective electrolysis. And the power supply is also used for electrolysis of potassium hydroxide, copper foil, salt solution, seawater desalination Electrodialysis(ED) etc.   Steel Plant RectifierHigh capacity electrolysis power supply is used in manufacturing process of EGL, CGL, PGL and STS, electrical degreasing and electroplating of a metal sheet including cleaning rectifier, Pickling Rectifier, Electrolytic cleaning rectifier, and Electroplating Rectifier using SCR phase shift technology.Rectifier for Seawater ElectrolysisProduct OverviewThis rectifier consists of rectifier transformer, SCR panel for rectifying switching, control section for control and protection and the control panel for an operation, if required, we have design skills of Harmonic Filter to reduce the input power factor and harmonics. There are several main circuit optional, typical circuit configuration 3 phase bridge rectifier or double star configuration. 6 pulse, 12 pulse, 18 pulse, 24 pulse, 36 pulse output available, with output power up to 100MW. For the purpose of safe operation and equipment protection various protective systems were adopted, and has a higher user comfort and more precise by the digital control system.Input voltage3 phase 380V-22.9kVOutput voltageDC up to 10kVOutput currentDC up to 100kAOutput capacityUp to 100MWEfficiencyHigher than 98%Operation methodLocal touch panel, remote touch panel or remote operation computer or communication interface with PLCCooling methodWater/AirTransformer typeDry type/oil immersedProduct Features Electric Circuit and Control Stability - Possession of its own Simulation Design CapabilityProved durability and reliabilityApplication of International Standards Communication Methods(Analog I/O, Digital I/O,RS-232/422/485)32bit DSP Controller UsingEase Maintenance Providing-Design for Ease MaintenancePossibility of Checking Burnout Location for the SCR FUSEA Redundant System of the Main Part.Can be Custom designed to fit User SpecMinimize Communication Error Using Optical CommunicationCustomer Benefits High reliability for smooth non-stop continuous electrolysis process running,  robust in various environment, have protection solutions for frequent power outages.Power saving: High power characteristics (efficiency, cos φ) combined with smooth-step current control;Excellent electrolysis process quality: High accuracy of high currents measurement up to 0.1%; Low output ripple;Easy operation, control, monitor and troubleshooting: Centralized control and diagnostics using modern microprocessor systems and touch panel or industrial computers, optimization of process control;Easy installation and commissioning;Minimal impact on supply network when running several rectifiers, due to the use of multi-pulse(6, 12, 18, 24, 36 pulse available) rectifying circuits, load tap changer, phase-shift devices and compensation winding built in power transformer.Product structures Transformer part,Converter part(thyristors),Heat exchanger,DC disconnectors,Current Hall sensor,Voltage transducerReactor and capacitorCopper bus barControl and protection circuit and devicesAuxiliaries circuit,Remote control of one or several rectifiers.Transformer part: Transformer - oil or dry, with NLTC (no-load tap changer). Connection to primary winding network is through OLTC device (on-load tap changer). Secondary winding is connected to the converter part;  Oil cooling transformer cooling tank provides circulation oil cooling of the transformer;Rectification part: Rectification part is made with bridge or double star rectification circuit, with an equal number of bridges and transformer secondary windings connected in Y and delta to increase pulse number.Applied power semiconductors: thyristors, devices are connected in parallel arms, which number is determined by the rectifier output current.Parallel connection of several circuits Y-reverse Y with smoothing reactor with thyristor control of line current value are applied in low-voltage high-ampere rectifiers.Control system:  Control system functions: current setup and regulation;protection and signaling;current and voltage control;high voltage breaker closing/opening;automatic and manual control of transformer OLTC and NLTC;processing of information from transformer monitoring cabinet;DC disconnectors control;data reception-transmission from control cabinet to remote control panel.Local control: Start, stop, current/voltage regulation, output current, voltage display, fault alarm etc. Equipped with analog or digital voltmeter and ampere meter.Local operation: main circuit ON button, main circuit OFF button, local/remote control switch, constant current/voltage switch, emergency stop button.Local alarms: water pressure, overload, thyristor overheat etc. with audible-visual alarm.Local display: DC output voltmeter, ampere meter.Local setting: reference value setting.Remote control:generation of commands for the rectifier switching on/off;current setting for each rectifier;signals processing and receiving from each rectifier of the group;alarms, warnings archives creation;current on load graphs making;rectifiers current and voltage data array formation;current and voltage average values archiving;data transfer to process automatic control system database via any of the following networks: Profibus-D, Ethernet, Modbus, N or other;equipment operation charts and graphs displaying and printing.General Specifications 1. Working Condition1.1Highest ambient temperature50℃1.2InstallationIndoor or Outdoor1.3Altitude<2000m(reduce rating at higher altitude)1.4Relative Humidity15%-85%RH2. AC Input2.1Input AC phase3 phase2.2Input line voltage(V)Low 380V, 220V, 415V, 480V      High voltage 6kV, 10kV, up to 22.9kV 2.3Voltage Fluctuating Range±10%2.4Input Frequency(Hz)50Hz/60hz2.5AC input positionFrom top side or bottom of cubicle3. DC Output3.1Rated Output Current(A)Up to 100kA3.2Rated Output Voltage(V)Up to 10kV3.3Output mode and rangeConstant Current, 0-100% of rated value3.4 Constant Voltage, 0-100% of rated value3.5Duty100% full load3.6Stabilization<+/-0.5%3.7Output positionFrom back side, bottom or top of cubicle3.8Output pulses6 / 12 / 18 / 24 / 36 and more4. Electrical Features4.1ApplicationElectrowinning, electrolysis4.2Regulation modeThyristor(SCR) phase shift4.3Power Efficiency(Full Load)≥98%4.4Power Factor(Full load)≥0.94 on request4.5Rectifier ConnectionBridge or double star4.6Rectifier CoolingAir cooling, Deionized Water to Water / Deionized Water to Air4.7Transformer CoolingONAN-ONAF-OFAF-OFWF-KNAN4.8Temp class105°C4.9NLTC or OLTCNo Load and On Load Tap Changers4.10RedundancyN+X4.11IP degreeIP30, IP54 for water cooling on request4.12Insulation GradeB, please specify if you require higher4.13Working ModeContinuous4.14Alarm typeAudible and visual alarm4.15ControlDigital or analog control url:http://www.gprectifier.com

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