 Guaranteed
to Remove Oxygen in Boiler Feedwater to .005cc/liter
Available from 5,000
to 200,000 LBS/HR
The Hurst “Oxy-Miser” deaerating
boiler feedwater system eliminates the need of expensive oxygen scavenger
chemicals and also offers the following advantages:
- Removes carbon
dioxide as well as oxygen.
- Raises the boiler
feedwater temperature, eliminating thermal shock in boilers.
- Improves overall
boiler room efficiency.
- Feedwater pumps
are sized for each individual application - assuring total compatibility
and optimum operation.
- Vessels are ASME
Code constructed for 50 psig.
- Compact design
means smaller boiler room requirements.
WHY
DEAERATE?
The use of deaerators
has long been used in power plants and water tube type boilers, primarily
because they remove undissolved oxygen and raise the temperature of
the feedwater. These advantages are important today for firetube boilers
as well, due to higher capital investments.
Operating costs can
be reduced by recovering flash steam when returned by high temperature
condensate. This feature also raises the feedwater temperature, thus
requiring less boiler fuel to convert the feedwater to useable steam.
Boiler tubes, condensate
lines, and process piping have a much longer useful life by eliminating
the pitting action of untreated water. This advantage alone justifies
the cost of an “OXY-MISER” deaerator.
HOW
DOES IT WORK?
Undeaerated fresh
water is fed into the deaerator through the inlet water connection.
This water passes through the steam-filled heating and venting section.
The water temperature is raised and many of the undissolved gases are
released. As the water passes through the assembly, it flows to a scrubber
section where final deaeration is accomplished by scrubbing the water
with oxygen free steam. This steam is induced through a stainless steel
spray valve assembly which causes the high velocity steam to break
the water down to a fine mist through a violent scrubbing action. The
deaerated water spills over to the tanks storage compartment for use
by the boiler, and the gases are vented to the atmosphere.
STANDARD
EQUIPMENT
- Welded steel tank,
designed and constructed for 50 psig as per the requirements of ASME
Code; deaerating section with spray valve.
- Structural steel
stand with square tubing and steel pump platform.
- Feedwater pump
and motor sets, sized for each application.
- Water inlet valve
assembly for condensate return and fresh water.
- Overflow trap,
tank thermometer, pressure gauge.
- Steam pressure
reducing valve assembly with temperature controller.
- Safety relief
valve(s), vent valves, tank drain valve.
- Water gauge glass
set with cocks, drain valve, and protection rods.
- Pump suction piping
with strainer and shut-off valve.
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