MODEL 1: Standard VRSA - The standard VRSA captures the vapors from tanks and sends them to the sales line. To prevent oxygen ingress, the VRSA stops collecting vapors in the event of pressure loss in the tanks (due to opening the thief hatch etc.). When adequate system pressure is restored, the system routes vapors to the flare for a specified time (timer controlled) before capturing vapors continues.

The VRSA can be combined with other patented equipment to capture the vapors off the dehydrator still column and water tanks making the entire production site virtually emissions free.

• The VRSA is an easy retrofit into existing sites with little modification to the existing process.
  

MODEL 2: VRSA MODEL H (HERO) - Whereas the standard VRSA captures vapors from unstable condensate in the tank, the HERO (High Efficiency Recovery Option) stabilizes the condensate. 

A PICT equipped Model H vapor recovery system eliminates the need for the LPP (VRT Tower) and a VRU compressor.

• Positively eliminates oxygen entering the compressor via the tank or other system components
• Eliminates flashing (vapor loss) during transport truck loading
• Eliminates vapor loss during transport
• No loss of vapors when the thief hatch is opened (also improves worker safety)
• Stable products have greater value

The Engineered Concepts HERO offers significant advantages over other stabilizer designs that do not control compressor interstage recycles. The Engineered Concepts HERO provides is that it eliminates condensation in the aftercooler discharge which can cause large recycle loops and large compressor hp requirements. The HERO is a 100% vapor recovery solution with a wide operating range to address almost any production scenario. The HERO is modular skid mounted, reusable and installs easily.  

MODEL 3: VRSA MODEL L - The MODEL L VRSA employs a Liquid Pre-Storage Process (LPP) located between the flash separator and the tank. The standard LPP (aka. West Texas Tower, boot, LVT, VRT) is a vertical vessel whose height exceeds the height of the tanks by about 8 to 10 ft. The LPP feeds into the tanks via hydrostatic head at pressures as low as 6 oz.  The LPP vapors are captured and sent to a VRU. The VRU sends the vapors to a flash gas compressor that has the interstage compression temperatures controlled by PICT technology.  

	VSRA captures the vapors from the LPP vessel and not the tank.   The LPP eliminates potential oxygen ingress from the tanks due to a thief hatch being left open etc. and reduces storage tank vapors emissions to essentially zero. Engineered Concepts’ low profile LPP (approximately 10 ft. tall) offers numerous installation and operational advantages. It can be supplied for locations with height restrictions.  This skid-mounted version employs a pump to move the liquids to the tank and enables the entire Model L system to be easily and economically redeployed.
A short profile LPP enables the entire Model L vapory recovery system to be skid mounted and easily deployed.

All VRSA Models are Flexible and Reusable
All Engineered Concepts VRSA equipment can be re-used, easily relocated and has a wide operating range.  HERO models can also be operated in a multiple parallel arrangement to suit production capacity.  All components of each system are skid mounted and require few connections to make up and break out.