The document discusses cold soak filtration of biodiesel according to ASTM standard 6217. It summarizes that poor filtration can be related to feedstock choice or incomplete processing, and simply warming biodiesel may not be enough - it needs to be heated to 100F to dissolve all molecules. High filtration times also indicate potential for fuel filter plugging in cold climates. The Cold Clear system sequentially removes impurities that cause surface crystallization, ensuring biodiesel meets cold soak filtration specifications and minimizes plugging issues. It can be used by producers, distributors or fleet consumers of biodiesel blends.

1. Cold Clear for Cold Soak Filtration

2. Cold Soak Filtration Analysis: ASTM 6217 The time in seconds it takes for cold soaked biodiesel to pass through two 0.8 micron filters and the amount of particulate matter expressed in mg/l collected on the filter. For Producers/Blenders: Poor filtration can be related to choice of feedstock, as well as incomplete glycerin removal during processing. It may also indicate the B100 product was subjected to low temperatures (below pour point). It is not sufficient to warm to ambient- product must be heated to 100F to liquefy all molecules present. For Distributors/End users: High filtration times indicate the potential for fuel filter plugging. In freezing climates, consider heat trace on storage tanks, blend and piping equipment. End users may look to install heated filter housings.

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5. Here is How it Works • Cold Clear TM is a three stage system with all housings mounted in series on a single skid • The first stage serves as a pre-filter and captures solid particulates down to three microns using high efficiency Excellement® cartridges • Stages 2 and 3 utilize cartridges that combine adsorption technologies with the proven effectiveness of Schroeder’s high efficiency Excellement® synthetic media • The standard Cold Clear TM system is equipped with 1” NPT or SAE flange ports and is designed to handle a maximum flow of 5gpm for an estimated 15,000 gallons • Multiple units can be employed to meet higher flow requirements • The Cold Clear TM system can be easily integrated into existing plant piping environments • If multiple units are required, 70CentsaGallon.com in association with Schroeder Biofuels offers a range of flow & system monitoring options to ensure proper operation • The essence of the Cold Clear TM technology is the removal of crystallization precursors from the biodiesel or biodiesel blends. Therefore knowing the exact flow rate of your system is essential for the Cold Clear TM system to be properly sized and configured for a specific application.

6. How It Works

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9. What to Consider ? By sequentially removing certain impurities that create a higher than normal likelihood of surface crystallization on the filter, our Cold Clear TM technology ensures that your biodiesel can meet the ASTM specification for cold soak filtration. It also ensures that fleet customers are receiving the very highest quality biodiesel and will minimize system plugging quality issues. Cold Clear TM is effective for B100 and a range of diesel blends meaning that producers, distributors or even fleet consumers of biodiesel blends can use it.

10. Biodiesel Cold Soak Tax Credit Deadline Biodiesel producers not quite able to pass the newest quality standard… ASTM D 6751, which now includes a Cold Soak Filtration Test (CFST) will have some extra time when they can still claim the Internal Revenue Service’s dollar-per-gallon tax credit. Those not meeting the new standard were supposed to lose the credit as of April 1st, but that’s been rolled back to October 1st 2009.

11. We Can Help You Today Start with the future of cold flow technologies today! http://www.70centsagallon.com/cold-soak-astm.html