Bryan Boilers HFS-15-100-100-D - Manual (Page 4)

Spray Type and Tray
Type Deaerator Features
• Constructed and Stamped to ASME
Section VIII, Division 1 for 50 psig
• 1/16" corrosion allowance
• Easily accessible manway
• 10 minutes of deaerated water
storage to overflow
• All internal surfaces that contact
undeaerated water are constructed
of stainless steel
• 2-stage deaeration
• Structural steel stand/pump platform
• Available as completely packaged
unit including pumps and control
panel
Why deaerate
boiler feedwater?
There are many advantages to deaerating water prior
to boiler input, but they all boil down to reduced cost
operations.
• Water is heated during deaeration to near the
temperature of the boiler water, thus minimizing the
risk of thermal shock damage to a high value
boiler system.
• The deaerating process removes noncondensible
gases (oxygen and carbon-dioxide) which tend
to act as insulators inhibiting the transfer of heat
within the boiler.
• Removal of corrosive oxygen and carbon-dioxide
controls corrosion within the boiler and piping,
extending the life expectancy of the system and
reducing maintenance cost.
• Higher temperature feedwater reduces the drop in
boiler operating pressure which can occur when
cold water is added.
• Recycling of steam from vents and flash steam from
traps that would otherwise be vented to the atmos-
phere can result in appreciable energy savings.
• Mechanical deaeration by a feedwater deaerator can
cut the amount of chemical consumables used for
water conditioning for a continuing operating
cost saving.
Reduce costs/improve efficie
Bryan spray-scrubber type deaerators offer a competi-
tive alternative for feedwater deaeration. The initial
investment is lower, yet they offer comparable results,
particularly where wide or rapid fluctuations in load are
not anticipated. The spray type deaerator may also be
advantageous in situations where headroom in the
boiler room is restricted.
The Bryan spray type deaerator is rated for oxygen
removal to .005cc/l (7 PPB) and CO
2
to zero measurable
across its entire operating range. With its all stainless
steel spring loaded spray valve and second stage steam
scrubber, the spray type deaerator is a good choice for
most deaerator applications.
Units are available with a complete range of boiler feed-
pumps and control options making them a total deaera-
tor package with minimal amount of field assembly.
4
Pressurized
Spray Type Deaerator
Capacities from 5,000 pph - 60,000 pph
Model DSH-150-5-2-2