Truck/Rail Load/Unload Blending System

Introduction to Blending System

The Environmental Protection Agency’s (EPA) demanding renewable fuel standards (i.e., RFS2) require stringent fluid handling and measurement accuracy – the kind of accuracy Smith Meter equipment is known for. Your terminal operation demands properly designed and fitted skid-mounted equipment to maximize your return-on-investment. SRS’s fuels Blending System module delivers the latest in technology and accuracy. We utilize on the best petroleum grade products ranging from Emerson Coriolis process Flow meters with temperature compensation to Emerson Fischer type modulating valves for precise fuel flow/pressure control. A convenient, turnkey solution, complete with state-of-the-art metering technology supported with a comprehensive load rack product portfolio.

Our skids integrate into existing blending-capable presets, such as the common Accuload type control system or a touchscreen operation with easy operator controls and graphical color displays. Each control system, regardless of type have blending presets/recipes that can be quickly reconfigured on-site whether it is straight product loading, side stream or ratio blend loading, resulting in highly accurate blends.

SRS’s business is to insure proper custody transfer measurement and flow controls are met. Our expertise in custody transfer measurement, automation and control combined with our knowledge of loading rack conditions regardless of whether it is trucks or rail, make us the choice for designing and building blending systems.

• A skid footprint is suitable for new or retrofit upgrade installation
• Pre-packaged skids that will support up to eight blend streams
• Standard blend rates range from 2% to 50% at a loading rate of 660 GPM
• Standard skids accommodate a variety of blending techniques whether it is upstream (sidestream) or downstream (ratio).

Types of Blending System

Ratio blending is used where the biofuel stream is mixed with the main product stream “downstream” of the main product meter. One electronic controller device manages all flow streams. With this blending method, the biofuel stream is considered part of the custody transfer metering. The main advantage for Ratio Blending is that all final components are individually and accurately measured, thus enabling correct inventory reconciliation. This method provides the most accurate final custody transfer volume information.

Side stream blending is when the blending is performed “upstream” of the primary feed stream delivery meter, which will measure the combined blend. The total volumes of each product are totalized by subtracting the secondary component total from the final delivered total. The secondary stream has a higher operating pressure in order to overcome the main product pressure in order to properly feed into the line and because of this, it assists in rapid blending the product.

Also check out, “Blending Technology“