|
Power
Generation
INSTRUMENT QUALITY AIR – Oil Free is Preferred
The Instrument Society of America
definition of "Instrument Quality" Air is:
-
A maximum oil content of less than one
part per million (by weight);
-
The particle size in the air stream
must be less than 40 microns; and
-
The dew point must be 18ºF below the
minimum temperature to which the air is exposed
AirNow oil free centrifugal compressors
supplied with an associated refrigerated or desiccant
dryer is an excellent choice for supplemental or
temporary source of clean dry instrument quality
compressed air. It should be noted that +40 degree
dewpoint refrigerated dryers can be employed where
ambient conditions are expected to be above 60 degrees
F. Where ambient temperatures are expected below 60
degrees F, – 40 degree desiccant dryer can be utilized
to ensure air being supplied meets or exceeds Instrument
Air standard in low ambient operating conditions.
Instrument air quality is required in
pneumatic process control systems, laboratories, powder
coating, spray painting, packaging machines, automated
production equipment ect.
PLANT
AIR
The
extensive use of compressed air in industry is second
only to the use of water. This air is used for tools,
forges, hoists, conveyors, instruments and a host of
other uses in the 100-125 PSIG range. Needless to say,
the loss of a plant’s compressed air supply can put a
manufacturing facility completely out of production.
This is where the AirNow Fleet of Oil-Free high capacity
rental compressors takes over. AirNow only rents the
inherently oil-free Ingersoll-Rand CENTAC centrifugal
plant air compressors, sizes ranging from 1,800 to over
21,000 CFM. We can normally have the equipment on the
way within 24 hours of a call. Our skid mounted units
require only power hook-up, cooling water, a small
amount of control air to start, and a discharge line to
carry the compressed air to the plant system.
For
example, a large Midwest foundry experienced a major
explosion in their plant air system severely damaging
the compressor house and shutting down the foundry. The
AirNow Compressor Fleet received the call at 4 p.m. for
five (5) C-25’s. The first two compressors arrived the
next day. Twenty-four hours after the call all five
Centacs were on site and one was running! Of course,
AirNow cannot always promise this rapid service, but it
is a good example of the effort we put into serving our
customers’ needs in times of emergency.
AirNow
Compression Services has supplied plant air to
refineries, glass plants, automobile assembly plants,
appliance manufacturers and electric utilities just to
name a few.
NUCLEAR DOME TESTING
An interesting application for the AirNow
Compression Services C-18 Trailer Mounted Centac is
nuclear power plant containment dome testing. By
Federal Regulation, all nuclear containment domes must
be leak rate tested before commissioning and then three
times during the next ten years. This is accomplished
by pressurizing the dome with oil free air to one half
its rated pressures or 12-60 PSIG, depending upon
design. The Nuclear Regulatory Commission is currently
trying to change the regulation to full pressure. The
decay of pressure is measured and the leak rate
calculated. The volume of the domes involved varies
from 250,000 cubic feet for a boiling water reactor to 3
million cubic feet for a large pressurized water
reactor.
Soot Blowing
Air soot
blowing in coal fired power generating plants is an
important application. In most cases the power plant is
on the verge of shutdown if a failure of the permanent
soot blowing compressors is experienced. AirNow
Compression Services have assisted many coal-fired power
plants in such emergencies
Air soot
blowing in coal fired power generating plants is an
important application. In most cases the power plant is
on the verge of shutdown if a failure of the permanent
soot blowing compressors is experienced. AirNow
Compression Services have assisted many coal-fired power
plants in such emergencies
|
