Filtration Unit (CIF)
Purafil Technical Services
CIF Equipment - How it works
CIF Equipment - Applications
Industrial Compressors Affected By Corrosion
Air compressors play an important role in an
industrial environment, providing the compressed air to the pneumatic
controls, valves, process applications and various instruments
throughout the plant. In industrial environments, it is critical that
gaseous contaminants and particulate matter be removed from the intake
air stream of all air compressors. Unfortunately, standard particulate
filters offer insufficient protection.
The CIF is a non-powered unit designed to remove
gaseous contaminants that attack intercoolers and other parts of
centrifugal compressors, as well as downstream instrumentation. The CIF
contains an optional rain louver, pre-filter, two or three banks of
modules and a high efficiency final filter. The CIF connects to the
compressor with the outlet plenum. Galvanized metal is the standard
material used for the construction of the unit housing. Construction is
also available in cold rolled steel, aluminum and stainless steel.
Intake Filter (CIF) Brochure
Intake Filter (CIF) Technical Brochure
Intake Filter (CIF) Design Specifications
THE CIF SYSTEM
THE AIR PURIFICATION
- Air moves through
the CIF system in several sections, each treating the air and removing
various airborne contaminants.
If the ambient intake
air contains corrosive gases such as Sulfur Dioxide (SO2), Oxides of Nitrogen (NOx),
and Hydrogen Sulfide (H2S), it will raise
the acidity level of the compressed air creating a corrosive condensate
which attacks metal surfaces.
- Purafil media
within the CIF reacts with and neutralizes corrosive contaminants in
the intake air, preventing corrosion within the compressor.
Critical copper, aluminum and cast steel compressor
parts (photo) are the most susceptible to
these corrosive gases. An air compressor intercooler can be severely
damaged if it comes in contact with this corrosive condensate. Other
key components of the compressor - impellers, diffusers and the
compressor casings - can also be damaged.
first section of the process is a particulate prefilter designed to
remove dust and dirt. This prefilter removes particulates 10 microns in
diameter or greater. The primary purpose of the prefilter is to protect
the chemical filters and the high efficiency final filter. The
prefilter retains its structural integrity in moist environments and
it, therefore, also serves as a low efficiency mist eliminator.
second section is the chemical filtration section where Purafil
chemical media is used to remove gaseous contaminants from the air
stream. Multiple stages of media may be required.
last section is the final particulate filter. This filter is a high
efficiency filter which removes particulates equal to or greater than
Purafil, Inc., the industry leader in gas-phase
filtration, developed the Compressor Intake Filter (CIF) system to
remove corrosive gases such as Sulfur Dioxide (SO2), and Hydrogen Sulfide (H2S). These gases increase acidity levels which lead to
decreased compressor efficiency. Interestingly, concentration levels of
these gases, which are acceptable for humans, are dangerously high for
air compressors. The service life of a compressor is extended and
costly repairs are avoided when corrosive gases are removed from the
intake air stream.
The CIF is a multi-stage, highly efficient air
purification system that removes gases and particulates, and prevents
corrosion caused by airborne contaminants. In the absence of CIF
protection, these contaminants can result in reduced efficiency, costly
repairs, and equipment downtime.
Industry leaders recognize Purafil's expertise in this
field and rely upon Purafil to protect their expensive air compressors
from corrosive gases commonly found in industrial environments.
Purafil's CIF is compatible with most major air
compressor manufacturers, including Ingersoll-Rand, Elliott, Demag,
IHI, Joy Cooper, and Atlas Copco to name a few.
Food and Beverage
Iron and Steel Mill
Pulp and Paper Mill
Textiles and Fibers
for a free coupon text on your compressed air
intake to see if you need a CIF Air Filtration System to protect your