Technologiсal Solutions

Grasys has unique experience in designing and producing gas separation equipment. Technological and scientific research results of our specialists take into account both field experience and new business needs of our clients. As a result, Grasys is proud to offer equipment that most closely attends customers’ demands, which leads to substantial cost saving. The types of operations performed by Grasys are as follows:

  • Selecting and testing new adsorbents to improve PSA generators performance
  • Investigating gas separation membrane performance figures for various gases in a wide range of temperature and pressure (up to 10 MPa)
  • Optimizing membrane module regeneration process
  • Performing research and development (R&D) on gas separation technologies; the available technologies are subject to pilot testing within the fields of key oil and gas companies

Membrane technology

The basis of gas separation membrane technology is the membrane in which gases are separated.
Research and production company Grasys is an expert on membrane gas separation; we have been producing membrane technology-based equipment since 2001. Our deep experience in membrane equipment designing and technological knowledge ensure our customers with the most economically-sound result and individual attention to solving gas separation problem.
Grasys has launched Russia’s first hollow fiber gas separation membrane elements production to recover helium concentrate from natural gas, natural and associated petroleum gas treatment. This is a unique high-tech manufacture, the only one in Russia and the CIS.

Adsorption technology

The adsorption technology is based on certain substances absorption by molecular sieves, and thus air mixture separation is ensured.
The distinguished knowledge of adsorption technology enables Grasys to develop high-performance PSA generators. Pressure swing adsorption (PSA)technology is applied tomanufacture cutting-edge PSA nitrogen and oxygen generators, hydrogen purification units, and gas drying plants.

Cryogenic technology

The air separation principle using cryogenic plants is based on air liquefaction and its subsequent separation through low-temperature rectification into nitrogen, oxygen (argon, neon, helium, krypton, xenon). Cryogenic plants are sophisticated technical products that include ambient air compression and treatment equipment, heat exchangers, rectification towers, cryogenic pumps, and many others.

Absorption Technology (Amine Scrubbing)

Various absorption technologies are used for water and hydrogen sulfide treatment of natural and associated petroleum gas.
Glycol dehydration absorption plants are designed to remove water from natural or associated petroleum gas flow by absorbing water vapor using special liquid absorbent, mainly di- or triethylene glycol.
Chelated liquid-phase oxidation units for hydrogen sulfide removal are a reliable and environmentally friendly technology to remove hydrogen sulfide from gas with its processing into eleme

Glycol dehydration

Glycol dehydration is based on water absorption by liquid absorbents. The purpose of glycol dehydration plant is to remove water from natural gas.

Compression technology

Compression is an industrial gas processing and treatment technology used to increase its pressure through compressor. Compressors are used to compress air, hydrocarbon gases and pure gases, etc.

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