TECO Economizer Treat
TECO ECONOMIZER TREAT is a liquid soot remover to prevent soot
deposits in exhaust gas boilers at low temperature.Extremely efficient when
slow steaming at sea.
Features & Benefits
• Very effective when temperatures are above 200°C
• An easy to dose soot remover liquid
• Complete coverage of entire exhaust gas unit
• Neutralises sulphuric acid
• Greatly improved heat transfer
• Reduces corrosion and fire risk
• Maintains good heat transference in the system
• Greatly reduces the chance of soot fires
• Prolongs the life span of the combustion chamber
Today’s main propulsion units have low exhaust gas outlet temperatures. This is due to increased
engine and turbo blower efficiency. Lower gas temperatures are also the result of running at reduced
power. The low temperature and reduced gas volume gives increased soot deposition and subsequent
corrosion. The increased deposition greatly reduces the thermal efficiency of the economizer. As ̈dew
point ̈ is often reached in the unit, causing the generation of sulphuric acid, the corrosion process is
TECO ECONOMIZER TREAT is a specially developed liquid, which is easily dosed into the system,
using a special TECO CHEMICALS injection unit.
The special air assisted nozzles create a fine mist, so the liquid vaporizes on contact with the hot gas.
The vapour mixes with the exhaust gases and the active material is dispersed throughout the system in
microscopic particles. These tiny particles have an extremely large ̈active surface area ̈, are lightweight
and thus remain fully dispersed in the gas. This ensures that all parts of the economizer are covered
In the past, powder products have been developed for this purpose. However, their large particle size
and greater weight makes them difficult to inject efficiently, so they cannot reach all areas requiring
treatment. This leads to product wastage and ineffective cleaning of the upper areas, where most of the
soot is deposited.
TECO ECONOMIZER TREAT catalyses the post-combustion process, resulting in modified soot
particles that are dry and non-adherent. The resulting deposit is more friable and can be more easily
removed by the action of the soot blowers.
Directions for use
TECO ECONOMIZER TREAT is designed to prevent major build-ups of soot in service. If the
economizer is badly fouled we strongly recommend a pre-cleaning of the unit using TECO SEACLEAN
VOYAGE or TECO TANKCLEAN ALKALINE.
1 - 2 l of ECONOMIZER TREAT is required for every 1000 m2 of heating surface area. This amount
should be increased/decreased according to economizer design and fuel consumption.
TECO ECONOMIZER TREAT should be injected daily or twice daily after soot blowing.
TECO ECONOMIZER TREAT is usually available in plastic cans of 25 l.