Knowledge base: Hydrogen Generating Plant

Angstrom Advanced is the leading supplier of Hydrogen Generators for refinery, petrochemical and other industrial applications. Our services for Hydrogen Generating Plant projects typically include conceptual design, detailed engineering, procurement, fabrication, construction, start-up and operational training. We provide a lump-sum, turnkey solution, handling everything from concept to start-up with our own resources whenever possible.

Components of the Hydrogen Generator by Water Electrolysis

  • Bipolar pressurized Electrolyser
  • The cell of electrolyser is divided into anode cell and cathode cell
  • Hydrogen is generated in cathode side
  • Oxygen is generated in anode side
  • Electrolyser is filled with electrolyte KOH mixed with DM water (30% KOH)
  • On Electrical Side Rectifying transformer is used to change high AC voltage electricity to low voltage electricity and then through rectifying to become DC power
  • The positive pole of DC power is connected to the anode of electrolyser, cathode of electrolyser directly comes from transformer
  • Rectifying transformer and rectifier are two main part of Electric power supply unit.
  • Cathodic reaction is 4H2O+4e == 2H2+4OH-
  • Anodic reaction is 4OH == O2+2H2O+4e-
  • The pressure of the system is raised to and maintained at the set pressure by means of regulating valve.
  • The electrolyte at the bottom of hydrogen and oxygen separators is pumped back to electrolyser after filtering and cooling, to complete one process cycle.
  • Hydrogen & oxygen generated in electrolyser mixed with electrolyte are sent to Hydrogen and oxygen separators, there hydrogen and oxygen are separated with electrolyte due to gravity.
  • Hydrogen and oxygen gases are allowed to pass through hydrogen and oxygen coolers separately and are cooled to the temperature of 30~40°C,
  • The hydrogen is allowed to pass through a pd deoxo unit and hydrogen dryer to remove its moisture and oxygen .
  • Electrolyte tank is used for storing electrolyte and feed water.
  • Electrolyte pump makes the electrolyte, pumps it in the system and back in the pump
  • Feed water pump is a piston pump, used to pressurize feed water into the system