Condensate Contamination Detection System
A Boiler is an enclosed vessel that provides a means for combustion heat to be transferred to water until it becomes heated water or steam. It requires pure, non-contaminated water.
The boiler comprises of 3 (three) systems:-
1) Feed water system
2) Steam system and
3) Fuel system.
The water supplied to the boiler that is converted into steam is called feedwater.
The 2 (two) sources of feed water are:-
1) Makeup water (treated water) which comes from water treatment plant.
2) Condensate or condensed steam returned from the processes
Both sources of water should meet the stipulated parameters. It is important to note that :-
• It is easy to check and maintain the quality of makeup water. Quality of makeup water is 100% under control of Boiler personnel
• Controlling the quality of hot condensate is difficult for the boiler personnel
Makeup water is pretreated by one of the following processes:-
1) Softening (Soft Water)
2) Demineralization (DM Water)
3) Reverse Osmosis (RO Water)
Checking the quality of condensate on a continual basis has remained an intricate problem for Boiler operators. The quality of condensate returning from processes is getting affected in many ways, as described below:
From the mixing of leaking media like chemicals, vegetable oils, and other process media in equipment (Coils, Heat exchangers, Reactors, etc)
Mixing of pipeline debris
Dirt particles and other foreign substances falling in condensate collection tank.
The water chemistry may change due to mixing and dissolving of these foreign substances in the condensate.
For feedwater, below mentioned parameters are mandatory to be checked and filled in the Boiler logbook, at regular intervals :-
1) pH (3) TDS (5) m / p -alkalinity
2) Temperature (4) Hardness (6) Silica
Other parameters to be checked are DO2 (dissolved oxygen), Hydrazine residual, Turbidity, and electrical conductivity.
To help and assist boiler personnel in checking the quality of condensate on Real-time basis, we recommend installing UKL make “Online 24 X 7 UCCDS”
Salient Features
Insensitive to contamination, fouling or scale formation on the sensor surface
Total galvanic separation of the measuring components from process media
No polarization, which is very common in conventional sensors
Dedicated arrangement for online flushing of dirt particles and other impurities from the sensor chamber.
Offers the versatility of changing the type of sensors (viz., toroidal sensors, etc) in the same sensor chamber
Adequate provision to install additional pressure gauges, temperature gauges, pH sensor, etc on each module
The deal for condensate recovery for power boilers, as we can offer.
