Freesia Seaways

Project description:
Dosing systems for sodium carbonate powder and tank with control system.

General Information:
Sodium carbonate (Na2CO3) is injected in the process water as the reacting agent to remove SOx in the exhaust gas. This applies to both closed-loop and hybrid configurations. When running in closed-loop mode, the circulation water must be dosed with an alkaline additive. In this unit a powder like sodium carbonate can be used instead of  liquid additive as Sodium Hydroxide(caustic soda), Taken aboard dry and loaded into a silo, the powder is mixed with desalinated water before entering the closed-loop circuit.

This cuts operating costs, and reduces the potential onboard hazard.

Dosing system specifications: 

  • Stainless steel (AISI 304)
  • Individual SEW gear motor
  • Mixing system is designed as a part of the bottom  section
  • Electric controlled valve under dosing system leads directly to the tub and flow pumps ensures supply of  content

Other components:

  • Digital load cell
  • LS1 Level switch
  • 12” touch panel with control system

Each dosing system contains:

  • 4 sides and top made reinforced plate of trapezoidal
  • Built –in pipe construction
  • Top and sides also contains:
  • Inspection hatches
  • Ventilation/filling plug
  • Sockets
  • Fittings

Download PDF here.