Features
AIR SEPARATION PROCESS
The volumetric composition of dry atmospheric air
is ~78% nitrogen and ~21% oxygen, with the
remaining ~1% being made of argon, carbon
dioxide and trace amounts of other gases. These
gases can be separated in an air separation process
where the air is compressed, cooled and separated
by molecular weight in a cold box. Once separated,
the gases are again compressed for storage,
transportation, or further processing. Ingersoll
Rand has the technologies and resources to
provide the main air compressor (MAC), booster air
compressor (BAC), nitrogen gas compressor (GAN),
nitrogen recycle compressor (NRC), and argon gas
compressors. The MSG LMAC is designed
specifically to fulfill the role of the MAC with
optimized aerodynamic efficiency. Interstage
coolers are implemented after each stage of
compression to remove the heat of compression
and achieve high isothermal efficiency. The MAC is
the heart of the ASU; its efficient and reliableoperation is critical to the success and viability of
the ASU project.
HIGHLY EFFICIENT DESIGN
MSG LMAC compressors are designed to deliver peak performance throughout the entire compressor operating
range and feature:
• Custom, 5-axis milled impellers for process-specific aerodynamic designs
• Inlet Guide Vanes (IGV)
• High-efficiency intercoolers and optional aftercooler
ROBUST MECHANICAL DESIGN
MSG LMAC compressors are designed to withstand the rigors of a long and demanding service life with:
• Tapered rider ring thrust collars to absorb loads at low speed
• Tilting pad radial bearings
• AGMA 13 rated bullgear and pinion gears
STANDARDIZED COMPRESSOR PACKAGE
The highly accessible, standardized design allows for shortened delivery times and
ease-of-installation/maintenance by providing:
• Standard engineering drawings
• Package-mounted intercoolers and terminal box/MAESTRO Universal control system
• Horizontally split gearbox
• Side-mounted lubrication console with duplex oil filters standard
• Compressor sub-base
ADDITIONAL APPLICATIONS
In addition to air separation, the MSG LMAC can be deployed for efficient, reliable service in several other
applications, including:
• Aerospace
• Automotive
• Electronics
• Fertilizer
• Glass
• Life Sciences
• Mining
• Petrochemical
• Pharmaceuticals
• Power Generation
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