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Thyristor Rectifier for Chlor Alkali Electrolysis Gold Silver Copper Zinc Lead Electrowinning

Thyristor Rectifier for Chlor Alkali Electrolysis Gold Silver Copper Zinc Lead Electrowinning
SCR rectifier for electrolytic process a pplication area Rectifiers for Electrowinning, Electrolytic Refining High 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...
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Thyristor Rectifier for Chlor Alkali Electrolysis Gold Silver Copper Zinc Lead Electrowinning 


1. SCR rectifier for electrolytic process application area

Rectifiers for Electrowinning, Electrolytic Refining

High 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.

Thyristor Rectifier for Chlor Alkali Electrolysis Gold .png  31166.png

SCR power supplies rectifier for Electrolysis, Electrochlorination in Chemical Plant

Rectifier 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.

Thyristor Rectifier for Chlor Alkali Electrolysis Gold .png

   Thyristor Rectifier for Chlor Alkali Electrolysis Gold .png

Steel Plant Rectifier

High 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 Electrolysis


2. Product Overview of SCR rectifier 

This 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 voltage

3 phase 380V-22.9kV

Output voltage

DC up to 10kV

Output current

DC up to 100kA

Output capacity

Up to 100MW

Efficiency

Higher than 98%

Operation method

Local touch panel, remote touch panel or remote operation computer or communication interface with PLC

Cooling method

Water/Air

Transformer type

Dry type/oil immersed

3. Product Features of SCR rectifier 

4. Customer Benefits of SCR rectifier 

5. Product structures of SCR rectifier 

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:

Local control:

Remote control:


6. General Specifications  of SCR rectifier 

1. Working Condition

1.1

Highest ambient temperature

50℃

1.2

Installation

Indoor or Outdoor

1.3

Altitude

<2000m(reduce rating at higher altitude)

1.4

Relative Humidity

15%-85%RH


2. AC Input

2.1

Input AC phase

3 phase

2.2

Input line voltage(V)

Low 380V, 220V, 415V, 480V
     High voltage 6kV, 10kV, up to 22.9kV 

2.3

Voltage Fluctuating Range

±10%

2.4

Input Frequency(Hz)

50Hz/60hz

2.5

AC input position

From top side or bottom of cubicle

3. DC Output

3.1

Rated Output Current(A)

Up to 100kA

3.2

Rated Output Voltage(V)

Up to 10kV

3.3

Output mode and range

Constant Current, 0-100% of rated value

3.4

 

Constant Voltage, 0-100% of rated value

3.5

Duty

100% full load

3.6

Stabilization

<+/-0.5%

3.7

Output position

From back side, bottom or top of cubicle

3.8

Output pulses

6 / 12 / 18 / 24 / 36 and more

4. Electrical Features

4.1

Application

Electrowinning, electrolysis

4.2

Regulation mode

Thyristor(SCR) phase shift

4.3

Power Efficiency(Full Load)

≥98%

4.4

Power Factor(Full load)

≥0.94 on request

4.5

Rectifier Connection

Bridge or double star

4.6

Rectifier Cooling

Air cooling, Deionized Water to Water / Deionized Water to Air

4.7

Transformer Cooling

ONAN-ONAF-OFAF-OFWF-KNAN

4.8

Temp class

105°C

4.9

NLTC or OLTC

No Load and On Load Tap Changers

4.10

Redundancy

N+X

4.11

IP degree

IP30, IP54 for water cooling on request

4.12

Insulation Grade

B, please specify if you require higher

4.13

Working Mode

Continuous

4.14

Alarm type

Audible and visual alarm

4.15

Control

Digital or analog control

Looking for thyristor rectifier for chlor alkali electrolysis gold silver copper zinc lead electrowinning non-ferrous metals electrolytic? Green Power Technology is one of the professional manufacturers and suppliers. We have been dedicated to this field for over 20 years and already exported products to India, USA, Germany, etc. Equipped with a productive factory, we warmly welcome you to buy our high quality products made in China at competitive price or try our customized service.

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