Steam Jet Vacuum Pump employ a number steam jet ejectors,
connected in series, to achieve vacuum down to a minimum 0.01 mbar abs. Between
each successive ejector stage, condensers are employed to remove consensibles
from the process, together with motive steam from the previous stage, to reduce
the required size of each stage as they then need only to be designed to
compress the concondensible fraction of the suction medium. These condensers
may be either direct contact, mixing-type condensers or indirect contact
surface condensers. Another option is to use Steam Jet Ejectors, in conjunction
with a Liquid Ring Vacuum Pump, which is especially useful for non-barometric
installation. Steam jet vacuum pumps can be manufactured from a range of
materials of construction and in the GEA Jet Pumps scope of supply are included
units of corrosion resistance materials, either completely ceramic, with spray
condensers, or with graphite block surface condensers.
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