Hydrogen plants

Grasys plants for hydrogen recovery from technological flows utilize the latest developments of membrane and adsorption technologies and open new opportunities for enhancing efficiency of chemical and petrochemical facilities and refineries. The adoption of the new technical regulation and the forthcoming transition to new fuel classes with reduced content of sulfur and aromatic hydrocarbons poses increasingly higher requirements for quality of hydrocracking and isomerization related hydrogen which is becoming increasingly important. Continuous toughening of requirements for hydrogen purity and complete recovery is being observed in both chemical and petrochemical industries.

In view of this, the Company is continuously improving the technology of hydrogen recovery in order to offer each customer a solution fully satisfying its needs and enhancing operating efficiency of its hydrogen loop.

Performance efficiency

Grasys membrane plants for hydrogen recovery allow considerably reducing the volume of recirculating HBG by increasing hydrogen concentration to ensure significant saving of process compressors life cycle. For a number of processors hydrogen concentration and reduced content of impurities is a condition precedent to the process improper performance. Adsorption plants supplied by Grasys enable both HBG concentration and removal of target impurities, such as catalytic poisons.

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Membrane 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.

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Adsorption hydrogen plants 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.