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Marine Vapor Control Systems
Envent designed its Portable Marine Vapor Control System to safely and efficiently destroy explosive vapors from marine cargo vessels during hydrocarbon loading activities. Our system complies with United States Coast Guard (USCG) regulations contained in 33CFR Parts 154 and 156 – Vapor Control Systems.
The Envent Marine Vapor Control System consists of two primary components – the Envent Dock Safety Unit (EDSU) and the Envent Mobile Emission Control System (EMECS). The EDSU unit accepts vapors from marine cargo holds and includes safety interlocks, detonation arrestors and an enriching system to ensure vapors are maintained outside of the explosive range before being directed to the vapor destruction unit. The EMECS is a 42MMBTU/HOUR portable, fully enclosed horizontal vapor combustor for high-efficiency (99+%) destruction of enriched vapors to meet all local, state and federal emission regulations.
The EDSU is a skid-mounted safety system located near the facility vapor connection, usually mounted on the wharf/dock adjacent to the marine vessel that will be loaded with hydrocarbon commodities. EDSU provides the safety interlocks, isolation devices, pressure/vacuum relief valves, detonation arrestors and an enrichment system to maintain the marine vessel vent stream in a safe and non-explosive range.
The EMECS is a 42MMBTU horizontal combustion unit with a fully enclosed thermal oxidizer firebox and dual horizontally-fired waste gas burners with a fixed pilot and flame safeguard system. The EMECS is typically located away from the wharf/dock in a non-classified safe zone where combustion can occur. Since the EMECS operates at temperatures greater than 1400 °F to assure complete combustion and destruction of the vent stream, the safe area must be a minimum of 30 meters from the closest marine berth in operation.
EMECS complies with all United States Coast Guard regulations, and the unit includes safety equipment ranging from fire safe valves and redundant detonation arrestors, to supplemental instrumentation that can instantly identify upset conditions. EMECS interlocks with the EDSU to form a highly effective, fully certified and 100% compliant Marine Vapor Control System.
