Compression Technology

Компрессорные установки ГрасисCompression is a technology for industrial gas treatment and treatment to increase its pressure using compressor. Compressors serve to compress air, hydrocarbon gases, clean gases, and so on.

Compressed air is used in manufacturing facilities virtually in all industry sectors. It is deployed as a source of energy, as an active element of control systems, or as part of process technology, specifically, air separation process.

Gas compression is a principal operation for hydrocarbon gases transportation through main pipelines, underground storage facilities injection and gas liquefaction as well as for raising oil condensate recovery and meeting the needs of chemical and oil refining industries.

Grasys Compressor Stations and Units

Grasys is pleased to offer its customers both air compressor units and stations in modular / packaged design and hydrocarbon gas compression packages.

Gas compression is performed in one or several stages while the compressor type and capacity are determined by the compressed gas amount and the required degree of pressure increase.

Compressors are classified into two basic groups — volumetric contraction and dynamic compression. In the first group the air is compressed due to the forced reduction in the occupied volume. The central position in this group is taken by reciprocating and screw compressors.

Grasys Compressor Stations and Units

Dynamic compressors are machines where work process is featured by continuous compressible gas flow under dynamic force. The impeller rotating blades trigger gas flow acceleration, and when the flow is decelerated against the diffuser stationary blades, gas velocity is converted into pressure. The dynamic compression process is implemented in centrifugal blowers and compressors.

Electric motors, internal combustion engines, hydraulic drives, turbines, and others can be used as a compressor unit drive. When diesel generator is used, we offer completely autonomous air compression systems.

Compressor performance can be regulated through bypassing, throttling the suction gas, and also, depending on the compressor type by varying the drive rotation speed, changing the compression chamber volume, by opening the valves, using port-type timing and so on.

With the respect of ensuring reliability and maintaining the specified compressor operating mode, appropriate systems for compressed gas cleaning at the compressor inlet should be provided for. Subject to gas purity requirements and based on gas properties compression can be performed in either oil-lubricated compressors or in oil-free compressors. Furthermore, a filtration system at the compressor gas outlet should be installed to ensure the required purification degree of the compressed gas.

Air and liquid cooling heat exchangers are used to chill down compressor units. Furthermore, they are deployed for gas interstage and end cooling.

Compressor units based on their size and service purpose can be located inside production workshops, in isolated stationary buildings, shelters, in transported modules or on truck chassis.

Gas Compressor Unit

Packaged Compressor Station

Air Compressor Truck

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