Refrigerant Drying
UOP is the world's leading supplier of molecular sieve desiccants
for air conditioning and refrigeration systems in the automotive, appliance,
and commercial construction industries.
Water can enter a refrigeration system both when it is manufactured and throughout
its useful life, via migration through hoses, fittings, and other components.
If not controlled, system moisture can result in freeze-up of capillary tubes
or expansion valves, corrosion of metal parts due to moisture or acids formed
by refrigerant hydrolysis, and formation of sludge that can plug the expansion
device. Molecular sieve desiccants are used to control this moisture and prevent
these problems from occurring.
UOP has introduced several generations of MOLSIV desiccants in response to
the changing needs of the refrigeration and air conditioning industry, each
specifically formulated to provide the highest drying capacity. These XH desiccants
have been formulated to provide high chemical compatibility with the particular
refrigerant and lubricants used to prevent any reactions which could also cause
system failure. XH desiccants possess the high mechanical strength and particle
integrity necessary to prevent crushing or attrition of the desiccant particles,
especially in high vibration services such as automotive air conditioning.
These features ensure unparalleled levels of desiccant cost effectiveness and
system operating reliability.
Historically, UOP’s XH desiccants were the industry standard for their
cost effectiveness and high operating reliability demanded by automotive and
stationary refrigeration systems manufacturers and their end-customers.
When the 1987 Montreal Protocol dictated the use of non-CFC refrigerants to
prevent ozone depletion and global warming, UOP quickly responded to the challenge
with the development of the outstanding new XH-7, XH-9, and XH-11 desiccants,
which allowed the refrigeration industry to meet their critical legislated
deadlines. In March 1998, the American Chemical Society recognized the significance
of this contribution by awarding its prestigious "Heroes of Chemistry" award
to the UOP development team.
To find out how the renowned work of the UOP Adsorbents & Specialties Group
can contribute to your company’s success, contact us today using our information request form,
or call your local sales office.
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