Vapor recovery units
Recuperation systems are necessary to capture and recover petroleum product vapors during transportation, storage and refining. They are highly demanded at filling stations, railway loading/unloading racks, tank bundling, etc. Thanks to vapor recovery and recuperation, losses due to evaporation of petroleum products will be reduced and the returns and profitability of the enterprise will increase.
OIS offers vapor recovery units (VRUs) using adsorption or membrane technology.
Adsorption technology
Carbon-vacuum adsorption is based on the absorption of hydrocarbon vapors (adsorbate) formed during storage and transportation on the surface of solid absorbers (adsorbent). As a rule, activated carbon is used as an adsorbent for hydrocarbons. The technology has proven to be the best solution for filling tank trucks, tank wagons, tankers as well as storage tanks.
Membrane type VRU is used:
- in systems with a complex composition of the incoming steam-air mixture, when vapors of several products are to be recovered
- in systems requiring the most efficient and reliable solutions to clean product vapor streams and adhere to stringent emission control standards, such as keeping benzene concentrations below 1 mg/m3;
- in systems that require a gas separation solution for the further process;
Regardless of the type, our units comply with the requirements of GOST RF and international standards recognized in the oil and gas industry (ASME VIII, ASME B31.3, EN 60079 & EN 1127), as well as the requirements in the field of health and safety at work established by Russian and European standards.
Typical vapors captured and recovered in vapor recovery units:
- Gasoline and diesel vapors;
- Fuel vapors E5, E10, E85, E100;
- Vapors of compounds of methanol, benzene, toluene and xylene;
- Esters: methyl tert-butyl (MTBE) and ethyl tert-butyl (ETBE);
- Vapors of naphtha (Naphtha)
Emission standards:
- 150 mg/Nm3
- 10 g/Nm3
- 35 g/Nm3
- 5 mg/m3 (benzene)
