Electro Chemical Production Rectifiers and Power Converters for Chlor Alkali sodium hydroxide provides high current for electrolyzer, Green Power has rich experience of rectifiers for Chlor Alkali industry.
Electro Chemical Production Rectifiers and Power Converters for Chlor Alkali
1. Process Introduction of chlor-alkali electrolysis
The caustic soda is gotten through the electrochemical reaction according to the formula
causes Cl- ions to be oxidized to chlorine at the anode, while water is reduced to hydrogen and OH- ions at the cathode. To bring this about, specially prepared pure brine is fed into the anode compartment. A cation-selective membrane separates the cathode compartment from the anode compartment. Only hydrated sodium ions can pass through the membrane. With the aid of the electric field, chloride ions are blocked out very well. As a result, the OH- ions combine with Na+ ions in the cathode compartment to form pure caustic soda.
2. Rectifiers and Power Converters Role in Caustic Soda Production
Rectifier system provides continuous DC power for Ion-exchange membrane electrolyzer, the rectifier plays important role for reliable, stable and efficient running. Efficiency, reliability, easy-to-operation, protection behavior are related performance.
3. Green Power Experience in Rectifier and Power Converters in Caustic Soda Production
Green Power is dated back to 1960, from the earliest rectifier manufacturer in China.
Have provided hundreds of high power Rectifiers for Chlor Alkali industry.
Have own PhD and master degree technical team, 100% self owned technology, DSP digital controller
Products exported to more than 40 countries, rich foreign country engineering experience, English communication without any problem
Strict quality control processs, strictly follow ISO 9001 quality management
Efficient and professional after sale service
4. Rectifiers and Power Converters for Chlor Alkali Block Diagram
The Rectifiers and Power Converters system normally includes high voltage switchgear, rectifier transformers, Rectifier, control panel, heat exchanger, high current DC current measurement sensor, polarization rectifier, DC disconnector, connection copper busbars, computer monitoring unit. Harmonic filter and power factor compensation facility is optional.
5. Rectifiers and Power Converters Reference Project Picture
6. Main Technical Parameters of Rectifier for Caustic Soda
AC 3 phase kV level, 50Hz/60Hz
Rated output DC voltage
up to DC 800V
Rated output DC current
up to DC 20kA
IEC-60146 Semiconductors converters
IEC-60076 Power transformers
IEC-61378 Converters transformers
Power factor at input @rated load
Not less than 0.9 through on load tap changer
without power factor improving capacitor banks, above 0.97
Efficiency @ rated load
Stability of output current at set point
Type of control
Ingress protection class of rectifier panel
Ambient temperature for design purpose
Thyristor based 12 or 24 pulse
Type and mode of control
150% for 1 minutes, 110% for 5 minutes, 100% long term
Rectifier thyristor cooling
Forced water cooled(cooling water is deionized water)
Transformer cooling method
OFWF or OFAF of ONAN based on output power
Transformer installation place
Indoor or Outdoor
Color touch panel Siemens brand
Remote control interface
4-20mA signal and dry contacts/Modbus/Profibus/ Profinet
Thyristor N+1 redundancy
Deionized water/raw water exchange, with redudancy
Grounding detection and grounding fault alarm
Thyristor RC snubber
Fast action fuses
Output over voltage
Output over current
Others required by purchaser
7. Company Introduction Video
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