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ARC-1061
Fire Side additive For Boiler
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Fireside corrosion damage
often occurs on a boiler that is in cold standby that has previously fired
sulfur-laden fuels. There are inevitably areas of the boiler where ash is
not removed from the tube surface during normal soot blower operation. One
of the most vulnerable areas is the interface where the tubes enter the drum
at tube-baffle interfaces and refractory-to-tube interfaces. When the boiler
is hot, corrosion is generally not a problem since moisture is not present;
however, upon shutdown, this ash and refractory can absorb moisture and
concentrated corrosive attack will occur over time in these areas. This is
one of the most common causes of the need for re-tubing of boilers that are
subject to extensive periods of cold storage. Localized pitting can be quite
deep, rendering an otherwise sound tube in need of at least partial
replacement.
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FIRESIDE TREATMENT
Deposits of slag and ash on the fireside of boilers can reduce efficiency and
damage tubes. ARC-1061 can reduce these deposits and gradually remove existing
slag.
PRODUCT DESCRIPTION
A combination additive in powder form designed for prevention of fireside
deposits on all types of boilers, tubes, heaters, flunkies and economizers. It
is formulated to keep the boiler clean from soot, clinker, fouling and
corrosion.
ARC-1061 is a formulation which contains dispersants, chemicals & corrosion
inhibitors. It is a free flowing powder, non toxic and safe to handle. It is to
be dosed directly into the furnace while the combustion equipment is in
operation
ARC-1061 when enters a high temperature zone it vaporizes and forms a thin film
on the comparatively cooler surface of the furnace the combustion catalyst
reduces ignition temp. of the adhering carbon permitting to burn at reduced
temperatures. Oxidizing agents provide the combustion oxygen.
ARC-1061 keeps the equipment at the peak efficiency while traditional cleaning
methods cause a sharp decrease in efficiency & increase in stack temperature
between shut-downs
ARC-1061 exposes the bare metal of the heat exchanger. The corrosion inhibitors
protect the metal from corrosion by acids produced during combustion & prevent
scale formation due to metal oxidation
Regular use of ARC-1061 ensures complete removal of fireside deposits and keeps
the combustion system clean & healthy for trouble free operation.
WHY IT REQUIRES ?
Deposition of unburnt carbon, ash, soot etc. on the fireside of the boiler will
result in the formation of scales, which acts as insulator, thereby reducing the
boiler heat efficiency. It is found that as little as 1/8" thick soot deposits
will reduce the overall efficiency of boiler by 5%.
The presence of corrosive gases like SO2 & SO3 pose severe corrosion problem if
unchecked especially when the moisture is present.
BENEFITS OF ARC - 1061
• Prevents filter clogging.
• Maintains clean nozzles.
• Prevents sludge formation.
• Inhibits wax deposition.
• Improve automization.
• Improve combustion.
• Reduce acid smut emission.
• Reduce smoke, acid mist and particulate emissions
• Raise the ph of resulting ash and neutralize acid attack
• Suspend, dissolve and disperse sludge; prevent clogged fuel lines and keep
storage tanks, preheaters and fuel lines clean
• Decrease the size of abrasive particles in the fuel, to reduce burner tip
erosion while enhancing fuel atomization
• Reduced corrosion and shutdowns
• Improved steam generation
• Heating surfaces are kept clean to facilitate efficient heat transfer leading
to fast steam generation and complete boiler utilization.
APPLICATION
ARC - 1061 is applied directly on the firebed utilizing any suitable access
point. It is important to ensure constant firing of the boiler for minimum
period of one hour before and also after dosing of chemical. A gray/white vapour
will be evolved by the ARC -1061 upon the refiring the boiler after application
and that will continue for 2 to 5 minutes.
The vapour is harmless and is an indication that the ARC - 1061 is working
correctly.
RECOMMENDED DOSAGE
Dosage are based on type of fuel employed for Boiler :-
(1) For Boilers burning, solid fuel like coal, wood husk, lignite etc.
Dosage :- 100 - 200 gms of ARC - 1061 per ton for solid fuel is required to give
best results. The general frequency of dosage is once in a day.
(2) For Boilers burning liquid fuels like kerosene, light diesel oil, heavy fuel
oil and also high temperature applications.
Dosage :- 300 - 500 gms of ARC - 1061 per ton of liquid fuel used. The frequency
of dosage is once in a day.
HOW DOES IT WORK ?
Deposits are controlled by adding ARC-1061 that raises the ash fusion
temperature to allow the ash to solidify before impacting a metal surface.
IMPORTANT
After application of ARC-1061 for few days, cleaning will be found to be much
easier, hard scale deposits having been broken down. It is recommended that the
boiler is then brusted or vacuumed through in order to remove loose scales.
PACKING
ARC-1061 is packed in polythene bags of 50 kg/ 50 kg drums (HDEP) since it is
highly hygroscopic, the bag/drum are to be reclosed tightly after every use,
stored in dry place. Although this chemical is not inflammable, but may support
combination. Therefore keep away from direct heat, naked flames, sparks and
acids.
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