DEGASER, CONDENS AND BLUFF TANKS

• CONDENS TANKS
  • It is used to store the water needed by the steam boilers.
  • They are generally manufactured as open to the atmosphere.
  • They can also be manufactured under pressure depending on preference and conditions.
  • Condensate water from the processes is stored in the condensate tank. The water lost due to leakage and flash steam is completed in the tank.
  • As the steam boiler water level decreases, it is completed with the help of the pump from the condensate tank.
  • In condensate tanks that are open to the atmosphere, some flash steam is constantly ejected from the vent pipe.
  • Fresh water can be heated with flash steam.

• DEGASER TANKS
  • The degassers are used to get rid of O₂ and CO₂ gases contained in the steam boiler feed water in dissolved form to eliminate their adverse effects on the metallic surfaces they contact.
  • The gases are separated from the feed water by fracturing the water droplets into tiny particles via sprinkling while they are heated to 102°C and 60°C for O₂ and CO₂, respectively.
  • Degree of pitting induced by the feed water onto pump inlet is directly proportional to its temperature and therefore, the degassing tanks should be installed at high level. This might be accomplished by making use of vertically installed feed water tanks.
  • Furthermore, this might also be solved by pressurizing the degassing tanks.
  • The degasser heating requirement might partly be satisfied by flushing steam and partly by boiler steam.
  • This may be considered as unwarranted consumption of steam, however, the degassers pay their costs when useful lives of the boiler and installation are taken into considerations.

• BLUFF TANKS
  • It is used to collect and release the boiler bluffs to the nature after cooling.
  • At the same time, it is possible to benefit from the heat of the bluffs. For example, fresh water can be heated.