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Volatile Organic Compounds Vapor Recuperation Systems of OTS engineering systems

Volatile Organic Compounds Vapor Recuperation Systems of OTS engineering systems

OTS engineering systems offers a line of vapor recovery units (VRU) to recover volatile organic compounds from the vapors.

The process is based on well-known adsorption techniques in the layer of activated carbon and regeneration of activated carbon using a vacuum. This technology is well proven as the best solution for such objects as: filling storage tanks, road and rail tankers and marine tankers.

The design of our systems and the selection of spare parts for achievement of a lasting, safe and effective process are based on international standards, recognized in the oil and gas industry, such as ASME VIII, ASME B31.3, EN 60079 & EN 1127 and Russian GOST.

Typical vapors recuperated and recovered by our systems are as follows:

  • Gasoline
  • Diesel
  • E5
  • E10
  • E85
  • E100
  • Methanol
  • Benzene
  • Toluene
  • Xylene
  • MTBE
  • ETBE
  • Naphtha

Our vapor recuperation systems are designed to meet the stringent requirements in the field of health and safety of the Russian and European directives.

Emission Standards:

  • 150 mg / Nm3
  • 10 mg / Nm3
  • 35  mg / Nm3

The main characteristics:

  • Modular construction
  • Prefabricated frame makes installation easy
  • Energy efficiency

Description of  vapor recuperation process

The process is based on the separation of gases using activated carbon. The mixture of air and vapors of volatile organic compounds (VOCs) are fed to the charcoal filters, where the VOCs are adsorbed in the carbon layer, and the clean air passes through the hole to the atmosphere. Only special granular durable and safe activated carbon is used in our filter.
After a certain period, usually from 10 to 15 minutes, activated carbon, saturated with hydrocarbons and VOC emission slightly increases. The analyzer located at the top of the filter finds it, then the control system switches the mode of the filter from entering the vapor phase to regeneration mode.

The vacuum system evacuates further recovered VOCs from the filter and then sends to the absorption column where VOCs arecondensed in the flow of gasoline or similar products, which are available on the terminal. While one filter is regenerated, the other filter receives a mixture of air and vapors of volatile organic compounds. Then it switches over.
Alternately using the capacitance adsorption and regeneration modes, the system operates continuously.