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Scale buildup in steam boilers can be completely
eliminated using Scale-X fluid control technology. |
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The conventional
method of controlling scale in steam boilers is by chemical
dosing. This method only slows the rate of scale buildup with the
result that the systems are always running at less than 100%
efficiency and can be considerably less than 100% if the boilers
are not cleaned on a regular basis.
With Scale-X MFCs installed, scale
can be totally eliminated. The system is maintained at 100%
efficiency which results in considerable savings in running
costs and reduced down time.
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Locate the MFCs as close as possible to the entry
of the feed water to the boiler if space allows.
The
Scale-X magnetic fluid conditioners are installed externally
to the feed water piping. They are installed preferably
just prior to entry to the boiler or if there is insufficient
space there (accessible straight length of piping) then they are
mounted just prior o the boiler feed pump.
The MFC is to be installed on pipes of non magnetic material
only. For boiler systems with stainless steel piping the MFCs
can be clamped directly onto the pipes. For systems with carbon
steel piping, install a 300 series stainless steel spool of
length 1100mm on which to mount the MFC. For boiler pressures
less than 400psi use Sch40 SS pipe for the spool and above
400psi use Sch80 SS pipe.
Water
supplies contain diamagnetic mineral salts, the predominate one
being calcium carbonate and this forms scale build up on the
heat transfer surfaces of the boiler. This is due to
evaporation taking place at the heating tube surface. When
the small bubbles form the calcium ions and the CO2 released
combine to from CaCO3. The scale is predominately in the form of calcite,
the most common substance treated by magnetic fluid treatment.
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Maintenance of water system with MFCs
installed |
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MFC's
can totally eliminate the scale build up and increase efficiency
by keeping the heat transfer surfaces clean.
When the MFCs are first installed there may be an increase in
the total dissolved solids (TDS) until all the pre-existing
scale deposits are totally removed.
If the boiler systems has a severe problem with removing
dissolved oxygen, it then may be preferable to install a second
MFC just prior to the deaerator or hot water tank.
Magnetic water treatment reduces the surface tension by about
10% which will assist in reducing the oxygen levels.
External
mounted "bolt on" MFC.
When the magnetic fluid conditioning has removed the existing
scale the boiler will operate much more efficiently.
The resultant benefits are:
Lower fuel costs
The boiler consistently maintains a higher output
Lower maintenance costs
Less shutdowns thus maintaining greater availability
Elimination of scale and corrosion inhibitors and oxygen
scavengers
Removal of pre-existing scale
Increase in the rate of heat transfer
Safer working environment without the hazardous chemicals
Fewer and/or shorter blowdowns
The MFC is:-
(1) a once off cost,
(2) maintenance free,
(3) does not require a power connection or
(4) a monitoring system to ensure it is operational and
(5) is environmentally safe and friendly.
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