CJSC Gas Separation Systems (CJSC Grasys) is involved in the development and manufacture of industrial gas separation plants based on membrane and adsorption processes.

Today, GRASYS believes it has established itself as the Russian and CIS leader in this sector, despite being only a young company founded in 2001.

Its expert staff comprise of employees of the Russian Research Centre Kurchatov Institute who possess the required knowledge and technological competence.

Despite the company’s youth, many of its employees have over twenty years experience in the gas separation field and it is this combination of knowledge and expertise that has enabled GRASYS to become an efficient and recognised entity in the market.

An engineering company specialised in the manufacture, design, delivery, installation and maintenance of gas and air separation equipment, GRASYS uses both proprietary equipment and equipment supplied by other world leading manufacturers and also provides upgrading services for current equipment.

“GRASYS is the first Russian company to launch the production and commercialisation of membrane nitrogen stations based on a hollow-fiber membrane. These proved a good alternative to PSA and cryogenic systems, where they fail to comply with certain customer criteria at a time when no Russian manufacturers were engaged in the production of such equipment,$quot; explained First Deputy Director of CJSC GRASYS, Sergey Potekhin.

GRASYS today
Today, GRASYS produces various types of air separation and gas separation equipment and to date, more than 500 enterprises have Grasys-manufactured units installed at their facilities.

Customers are thought to appreciate the high quality and reliability of equipment guaranteed by the multi-stage control system covering the design and manufacture aspects, as well as production flexibility and high-grade maintenance service.

GRASYS equipment includes:
- Air separation units, including nitrogen and oxygen plants and stations

- Nitrogen fire-fighting units

- High and low pressure mobile nitrogen stations

- Gas separation plants, including hydrogen recovery plants and hydrocarbon separation plants

Future ideas
As a company specialised in non-cryogenic gas separation techniques, GRASYS is well placed to capitalise on an evolving and ever efficiency-focused energy landscape.

Hydrogen and hydrocarbon recovery, it seems, is just one area of interest for the company in the future.

Sergey Bulavinov, Deputy Director General for Business Development, told gasworld, $quot;Now, we are concerned with the design and commercial development of proprietary membrane and adsorption plants for hydrogen recovery. These technologies are in demand at chemical, petrochemical and refinery plants as a means to recover hydrogen from waste streams, for reuse in technological processes.”

$quot;There is one more essential and interesting area to be tapped,$quot; adds Bulavinov. $quot;It is already about a year since GRASYS introduced its in-house unique membrane based hydrocarbon separation technology CarboPEEK, the adoption of which is primarily associated with methane fraction recovery from associated gas and valuable hydrocarbons production from oil chemistry waste streams.$quot;

$quot;This technology will be especially sought-after when the associated oil gas disposal issue is considered in Russia. It focuses on hydrocarbon dew point adjustment of natural gas, fuel gas treatment upstream of power gen-sets, as well as hydrocarbon recovery from petrochemical and refinery waste streams.$quot;

$quot;Industrial testing of CarboPEEK membrane plants has been undertaken by many Russian oil and gas majors.$quot;


The unique CarboPEEK membrane
GRASYS has developed a brand-new CarboPEEK technology based on a polymer membrane capable of imparting significant advantages, compared with other gas separation technologies in terms of capital and operating expenses.

Due to the improved cost-effectiveness and required longevity, CarboPEEK membranes are set to be successfully used in industrial applications (fuel gas treatment upstream of power generators, natural gas dew point adjustment) and under conditions rendering the use of other type polymer membranes impossible.

In addition, this membrane gas separation technology has a modular structure enabling system expansion or modification during operation without much effort, as well as providing a quick response to variations in feed gas composition over the source lifecycle.

Main applications
These membrane separators are characterised by enhanced chemical stability and efficiency in natural gas streams separation: the membrane-based gas separation process is actually streamlined along with an increase in heavy hydrocarbons concentration, without any liquid condensation-induced damage.

GRASYS is actively promoting its gas separation technology in several areas of natural gas treatment.

Adjustment of hydrocarbon and water dew point of natural gas, fuel gas treatment for power gen-sets and hydrocarbons recovery from petrochemical and refinery effluents have become the first areas actively involved with this technology.