Stage-3 Vapor Recovery Units
Engineered for Reliable Hydrocarbon Vapor Recovery

Vohon Petrochemical designs and manufactures vapor recovery equipment for gas stations, tank farms and loading terminals — membrane separation technology that turns tank emissions into recovered liquid product and cleaner air.

4–20
m³/h treatment capacity (WHSH-M)
500–550
mm elevated lines — gravity oil return, no pump
Ex IIB T4
Explosion-proof rating, IP55, outdoor rated
≤75
dB noise level · unattended PLC operation
What We Do

Vapor Recovery Equipment That Works at the Source

We supply complete stage-3 vapor recovery systems that capture hydrocarbon vapors displaced from underground storage tanks during refueling and unloading — converting emissions into recovered liquid product.

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Stage-3 Vapor Recovery Units

Compact skid-mounted VRUs for retail gas stations, designed to handle vapors displaced during vehicle refueling and tanker unloading.

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Membrane Separation Technology

Compressor pressurization, air-cooled condensation and membrane separation recover hydrocarbon as liquid — engineered for gasoline station vapor loads.

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Explosion-Proof Design

Systems built around intrinsically safe electrical components and flameproof enclosures suitable for classified hazardous areas.

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Custom Engineering

Treatment capacity, control logic and skid layout customized to local climate, site footprint and project specifications.

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Turnkey Support

From technical proposal and installation guidance to commissioning support and spare parts supply for long service life.

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Export Experience

Equipment engineered for overseas projects with attention to local technical specifications and regulatory requirements.

How It Works

From Tank Vapors to Recovered Product

A typical stage-3 vapor recovery loop at a retail station.

Vapor Collection

Vapors displaced from underground storage tanks are collected through the tank venting and piping network.

Treatment

Collected vapors pass through the recovery unit — adsorption beds, condenser or a hybrid train — separating hydrocarbon from air.

Recovery

Recovered liquid hydrocarbon returns to the storage tank; concentrated vapors can be recycled into the process loop.

Clean Discharge

Lean exhaust air is discharged through a safe vent, meeting the project's emission design targets.

Applications

Built for Fuel Handling Facilities

Our systems are sized for a range of hydrocarbon vapor sources.

Retail Gas Stations

Skid-mounted stage-3 VRUs that fit existing station layouts and handle refueling vapor loads with minimal footprint.

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Tank Farms & Terminals

Higher-capacity recovery trains for storage terminals, loading racks and depot vapor handling.

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Loading Racks & Depots

Vapor balance and recovery systems for bulk loading operations, engineered to project flow specifications.

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Need a Vapor Recovery Solution for Your Project?

Send us your site conditions — tank capacity, throughput, vapor flow and target discharge — and get a tailored technical proposal.

Contact Our Team