KAMPS-Stork Spray-type Deaerators

General

Many decades of eDégazeur STORKxperience have given the KAMPS-Stork Spray-type deaerator a unique place in the industry. The patented design has been used world-wide in power plants and industrial installations to the full satisfaction of our customers. Continuous improvements and flexibility make it possible to provide highly competitive solutions for power plant design.

Operating principle


 Pre-deaeration in which water is sprayed in a part of the steam space :
Final-deaeration in the water tank where steam is brought in close contact with the water to be deaerated.

The pre-deaeration is achieved by the KAMPS-Stork spraying device. Under all kind of operating conditions, the sprayer assures heating up of the condensate to saturation temperature and a very large area for mass transfer. As the solubility of oxygen in water at saturation conditions is practically zero, oxygen transfers from the water droplets to the surrounding steam. As the steam condensates on the water, the concentration of oxygen in the direct vicinity of the sprayer is increased making it possible to vent a small amount of steam with a relatively high oxygen concentration.

Final deaeration in the water tank is achieved by injection of steam in the water tank. Depending on the conditions either steam, pressurized hot water, steam/water mixture can be used for deaeration.

A proper designed steam device, taking into account the hydro-dynamics in the water tank, will result in good contact between water and steam, allowing the oxygen to move from the water to the steam in accordance with Henry’s law.

KAMPS-Stork deaerator types

* Temperature difference between the incoming water and the feed water outlet temperature.

KAMPS offers spray-type deaerators for different applications such as:

Horizontal

With more of 100 years of experience and more than 4000 references, this kind of deaerator is applicable in power generation, process and chemical industry. Its standard capacity is from 10 to 2500 t/h and it operates up to fully demineralised water: outlet below 7ppb.

Vacuum

Used in power generation, process and chemical industry. It has a compact construction and its operating pressure goes down to 0.2 bar. Vacuum and overpressure operation is possible, depending on the fuel to be fired.

Vertical

This kind of deaerator is suitable for areas where small footprint is required. The net volume is up to 30 m3 and its capacity goes from 10 to 450 T/H.

Internal Drum

It is installed inside the low pressure drum of HRSG’s. There is not external steam source required and it has a capacity from 50 to 450 T/H. The content of oxygen in the condensate from condenser should be: O2 inlet < 100 ppb.

Condenser deaeration

It is applicable when demi-water deaeration inside condensers (air cooled) is necessary. Operating pressure is from 0.1 - 0.2 bar. It operates with or without external steam source.

Marine/FPSO (Floating Production Storage and Off –Loading)

It is used for steam generation on board of floating vessels. It is compact and low-height design. It has an excellent deaerating performance under "marine conditions". It has a capacity up to 500 T/H

Retrofit

In case you want an increased capacity with the same storage vessel of the tray type deaerator, a retrofit with KAMPS technology is an advantage because it improves deaerator performance and reduces maintenance and operation costs.

Features
  • Reduction of oxygen concentrations to levels below 7 ppb over wide operating ranges (10 to 110%);
  • High reliability / availability;
  • Single shell design;
  • Deaerated water available as soon as the deaerator is pressurized;
  • Possible deaerating media: (superheated) steam, steam/water mixtures, hot-water or combinations here of;
  • Sliding pressure operation possible, from vacuum (0.2 bar(a)) to several bar over pressure;
  • Robust design, allowing very rapid load changes;
  • Low vent losses, 10 to 70 kg/h depending on amount of incoming oxygen;
  • Capacity range at the outlet from 10 to 6000 ton/hour, special models possible.
Advantages
  • Lower Total Cost of Ownership, due to:
  • Simple, robust design resulting in minimal maintenance;
  • Steam consumption savings by a very small vent flow;
  • No vent condenser necessary;
  • No spare parts required;
  • No chemicals (oxygen scavenger) for deaeration required.
Single shell design, resulting in:
  • Compact construction with low overall height;
  • Lower insulation and piping costs compared to other designs;
  • Simple erection;
  • High earthquake resistance.