Boilers are often termed as the “heart” of operations as it plays a vital role in many industrial plants. An effective boiler water treatment program is needed to keep the “heart” healthy. 3 common ailments are: Scaling, Corrosion and
Carryover

Boiler scale is caused by the formation of insoluble salts of calcium and magnesium at high temperature. These form a rocklike coating on the boiler tubes which severely reduces the heat transfer. This is highly undesirable, not only because it greatly reduces the efficiency of the boiler, but also causes the boiler tubes to overheat, so that in an extreme situation they can rupture with very hazardous consequences.

We offer periodic water analysis services to keep check of the undesirable minerals.

Scale formation is prevented by firstly removing as much hardness from the make-up water as possible (normally with a boiler water softener), and then secondly by chemical dosing program.
These boiler treatment chemicals ensure that any hardness slippage is converted into free form which can be removed by steam boiler blowdown and not form boiler scale.

If a boiler water softener fails, scale formation can occur rapidly, so it is important that the water treatment tests
include a daily test of the water hardness.

Corrosion in low pressure boilers can be caused by dissolved oxygen, acidity and excessive alkalinity. Water treatment
therefore should remove the dissolved oxygen and maintain the boiler water with the appropriate pH and alkalinity
levels.

In order to provide maximum protection to the boiler and feed system, the oxygen scavenger should be dosed to the system

Regular boiler water testing is essential to ensure that a good chemical oxygen scavenger reserve is maintained at all times

Carryover is caused contaminant that leaves the boiler with the steam. It can be in a solid, liquid, or vapor form. The most common form of carryover is boiler water droplets that contain dissolved and suspended solids.

Carryover can cause failure on superheated tubes, turbine blades, condensate line and etc.

Control of boiler water chemistry is essential to minimise carryover and allow mechanical separation to work effectively. The parameters that must becontrolled are: Total dissolved solids, alkalinity, silica and organic contamination.