Products

Hydrocarbon plants (associated petroleum gas treatment)

Currently, associated petroleum gas in remote and small fields is often diverted to flaring. This is explained by its high content of heavy hydrocarbons rendering impossible the use of such gas as a fuel for gas-fired reciprocating plants and gas turbine power plants. The use Grasys CarboPEEK membrane technology for associated petroleum gas treatment allows to significantly improve associated gas quality by reducing the concentration of heavy hydrocarbons and sulfur-bearing impurities, while completely eliminating aerosols, condensed moisture (dry stripped gas) and solid particles. The degree of associated petroleum gas treatment may vary depending on feed gas quality and customer requirements.

Grasys membrane plants allow significantly reducing gas dew point for both moisture (dry stripped gas) and hydrocarbons, in particular up to the requirements of OST 51.40–93 for cold climatic regions. This helps to resolve the most common problems — excessive gas dew point temperature for hydrocarbons and moisture during gas transportation and recovery from underground gas storage facilities, as well as to dispose of APG at the site or transfer it to gas processing plants.

Grasys designed membrane allows removing primarily hydrogen sulfide, moisture and carbon dioxide from gas, together with heavy hydrocarbons. Grasys membrane plants are capable of treating H2S-bearing gas to the requirements allowing its use as a fuel gas for gas-fired reciprocating plants and gas turbine power plants, oil heating furnaces and boiler houses. In certain cases, gas may be treated up to the requirements of OST 51.40–93.

High-technology Grasys membrane plants allow regulating the calorific value of mine gas and associated petroleum gas with high nitrogen content and conditioning them for use as a fuel for gas-fired reciprocating plants and gas turbine power plants, boiler houses.

Nitrogen plants and stations

Grasys, building on its more than 15-year experience of producing air separation equipment, offers fully automated membrane plants for nitrogen production from atmospheric air. Grasys nitrogen plants are designed and manufactured individually on the basis of customer design assignment. Nitrogen plants are cost effective, reliable and simple in operation.

Nitrogen purity — up to 99.95%, production capacity — up to 5,000 nm³/hr.

Grasys produces high-technology stationary automated plants for nitrogen production from atmospheric air. Nitrogen plants rely on air mixture separation technology supported by last-generation adsorbent materials, which allows producing high-purity nitrogen. Nitrogen plants are custom-designed according to the customer’s technical requirements.

Nitrogen purity — up to 99.9995%, production capacity — up to 5,000 nm³/hr.

In order to cover the needs for relatively small, high-quality and inexpensive nitrogen generators the Research and Production Company Grasys offers the serially produced adsorption nitrogen generators NITROPOWER based on the in-depth analysis of domestic and foreign low-capacity nitrogen generators. The adsorption generators are provided in two options NITROPOWER and NITROPOWER PLUS with various configurations and a set of additional options. This enables the Customer to pay solely for what is needed with a guarantee of invariably superior quality.

Grasys offers the best nitrogen stations unrivaled by the current market options in terms of the performance characteristics and designed for on-site nitrogen production across various climatic zones. Nitrogen stations used for air mixture separation and nitrogen recovery utilize membrane gas separation technology. Stations are capable of varying product nitrogen purity within a broad range.

Nitrogen purity — up to 99.5%, production capacity — up to 5,000 nm³/hr.

Grasys produces mobile compressor stations for nitrogen production from air. Nitrogen plants are designed as self-contained systems allowing high-pressure nitrogen production. Nitrogen stations are highly reliable, structurally simple and efficient.

Nitrogen purity — up to 99.5%, production capacity — up to 20 nm³/min, pressure — up to 350 atm.

Oxygen plants and stations

Highly efficient plants for oxygen production from atmospheric air and filling in oxygen cylinders. Grasys offers its customer the advanced serial adsorption oxygen plants AKC as well as adsorption plants custom-designed in accordance with individual technical assignments.

Oxygen purity — up to 99%, production capacity — up to 3,000 nm³/hr.

Fully automated membrane plants for air oxygenation. Grasys produces high-efficiency system for oxygen production from air on the basis of membrane technology. Membrane oxygen plants allow producing oxygen with the purity of up to 45%; the application of these systems is considered extremely economically expedient.

Oxygen purity — up to 45%, production capacity — up to 10,000 nm³/hr.

Grasys offers its customers serial adsorption oxygen plants for cylinders filling, as well as custom-designed plants based on customer technical specifications. The plant capacity ranges within 20 to 1000 cylinders per day with the product oxygen purity up to 99%.

Oxygen purity — up to 95%, production capacity — up to 250 nm³/hr.

Transportable stations built with the use of high-quality component parts of the world leading producers. Grasys oxygen stations allow deploying full-scale oxygen production with on-site oxygen injection in cylinders.

Oxygen purity — up to 99%, production capacity — up to 25 nm³/hr.

The new lineup of medical oxygen equipment for medical treatment facilities! The oxygen concentrators AKC rated for various capacity allow producing oxygen from atmospheric air and ensure its uninterrupted delivery eliminating dependence on regular oxygen purchase.

Oxygen purity — up to 95% with the optional system for final treatment up to 99%.

Nitrogen fire fighting plants

GRASYS produces nitrogen plants used to assure fire and explosion safety at various facilities. The operating principle of a nitrogen fire fighting plant consists in generating inert environment with high nitrogen content where the burning process is rendered impossible.

Nitrogen purity — up to 99.9%, production capacity — up to 100 nm³/hr.

Modular compressor stations

Grasys air compressor stations are containerized ready-for-use systems designed for industrial companies supply with compressed air meeting the requirements of GOST 17433–80 at station output. These modern-day automated air compressor stations ensure reliable, simple, and convenient operation.

Capacity — up to 10,000 nm³/min, pressure — up to 350 atm.

For solution of day-to-day tasks associated with natural and associated petroleum gas compression for downhole injection and disposal Grasys offers specialized gas compression stations. Grasys gas compression stations may also be used for other APG recovery methods — fuel gas treatment for gas turbine power plants or boiler plants.

Capacity — up to 25 000 nm³/min, pressure — up to 350 atm.

Hydrogen plants

Plants based on membrane technology for hydrogen recovery from gas mixture. Membrane gas separation plants are capable of producing gas flow enriched with hydrogen by up to 92–99% (vol.) with the option of its return to flow process. Due to the increase in hydrogen concentration, the flow rate of re-circulating HBG decreases substantially, thus ensuring a considerable saving of process compressors resource.

Hydrogen purity — up to 99.5%, production capacity — up to 5,000 nm³/hr.

Plants utilizing the most recent adsorption technology for hydrogen concentration. Grasys adsorption plants utilizing fast cycle are designed for production of high-purity hydrogen from gas streams. Grasys FCPSA plants are capable of producing hydrogen with the purity of up to 99.9995% and a minimum pressure drop in the separation process.

Hydrogen purity — up to 99.9995%, production capacity — up to 50,000 nm³/hr.

Transformer substations and LVDS

The Company «Grasys» is engaged in manufacturing and supply of outdoor integrated transformer substations in single or double transformers configuration, mounted in modular buildings or of the cabin-type Х-КТП-100…2500/6(10)/0,4-УХЛ1, employed in BOP systems of all types of power plants and for integration into power grids, power supply systems of industrial facilities and civic buildings, pump stations at gas and oil transmission lines and communal infrastructure systems.


The Company “Grasys” manufactures modular integrated transformer substations (MITSS) for the voltage rating 35/110/220/330 kV, acting as the General Contractor. It renders full range of services on construction of substations: design, servicing, erection supervision work, precommissioning, package supply, turn-key construction, SPTA supply.

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