BRO Steam Solutions

Products: Blow Down Coolers
Blow Down Coolers & Flash Vessels
Steam boilers must be blown down to remove contaminants,
as a too high level will cause foaming and scaling
of the boiler tubes. A build-up of solids at the bottom of the
boiler could also have serious consequences. Most modern
boilers are fitted with TDS controls to remove dissolved
solids, and a blowdown valve that is opened at regular
intervals to remove precipitated solids.
Because the bottom blowdown valve is opened just a few
seconds per day, it is not economical to recover the heat,
yet water cannot be discharged to drain unless it is cool.
Nowadays, blowdown vessels have replaced blowdown
pits as the recommended way of cooling this water.
Blowdown from TDS controls should ideally be connected
to a heat recovery system inside a flash vessel. Where
this is not practical, TDS blowdown may also be piped to a
blowdown vessel.
User benefits:
• Three inlets as standard with dedicated bottom blowdown
and TDS connection.
• Fully complies with the requirements of the European
Pressure Equipment Directive 97/23/EC.
• Complete systems normally readily available from
stock.
• Quick and easy to install and maintain.
For flash vessels an internal heat
recovery system is provided.
DISCHARGING AIR
AND OXYGEN TO
VENT out of building
Important factors for sizing of blown
down coolers & flash vessels:
• Boiler pressure
• Number of boilers
• Duration of blow down
• Blown down line size
• Length of blow down line between the boiler and
the blow down vessel
• Blow down regime
DRAIN
14 ECOTHERM Steam Solutions