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BIO3.2 Biodiesel Fuel Quality
- 1. Biodiesel Technical Training Course BIO3.2: Biodiesel Fuel Quality Presented by the National Biodiesel Board
- 2. ASTM American Society of Testing & Materials Biodiesel Specifications and Fuel Quality
- 13. Transesterification (the biodiesel reaction) Fatty Acid Chain Glycerol Methanol (or Ethanol) One triglyceride molecule is converted into three mono alkyl ester (biodiesel) molecules Biodiesel Triglyceride
- 17. ASTM D7467: B6-B20 Blend Specification
- 20. BQ-9000 Fuel Quality Program
- 31. Flashpoint
- 37. Cloud Point & CFPP
- 49. Good Conversion
- 54. Class I & II metals Calcium & Magnesium & Sodium & Potassium can be in biodie sel as abrasive solids or soluble metallic soaps. Solids contribute to injector, fuel pump, piston, and ring wear, & engine deposits. Soluble metallic soaps have little effect on wear, but filter clogging & engine deposits These compounds may also be collected in exhaust particulate removal devices
- 58. Low Cetane Impact Poor Ignition Quality Long ignition delay Abnormal Combustion Possible High Combustion Pressure Increased Engine stress Excessive Engine Knock Smoke on Cold start
- 74. MP Biomedicals
- 76. 0.2139 Bound Glycerin Although cloudy, there were no droplets of precipitate. 0.0900 Bound Glycerin Crystal clear, no cloudiness or precipitate. Samples Passing 3/27
- 77. 0.9256 Bound Glycerin Note the falling droplets of unreacted oil. Samples Failing 3/27 1.8260 Bound Glycerin
- 79. Acid Number Qualitative Tests
- 81. Soap Method Titrating from blue/green to straw yellow….
- 83. Wilkes InfraSpec measures percent biodiesel in diesel fuel, ethanol in gasoline, water in ethanol as well as total glycerides during the biodiesel pass/fail determination in less than 5 minutes. Wilkes Infra-Spec
- 84. Paradigm Sensors * Paradigm Sensors’i-SPEC™ tests TOTAL GLYCERIN in blended fuels (B6-B20), which is in accordance with ASTM proposal that the biodiesel portion of the fuel must meet ASTM 6751 prior to blending.
- 85. Fleet Biodiesel
- 86. Cytoculture - pHlip tst
- 87. Wika Water Test
- 91. Bacteria Growth Fungal Growth
Hinweis der Redaktion
- Oxidation Stability is 6 hours Cold Soak Filtration Test included Acid Number Reduction
- ASTM D 2274 is most commonly referenced
- Low cetane number fuels are slow to ignite and then burn too rapidly, leading to high rates of pressure rise. These poor combustion characteristics can give rise to excessive engine noise and vibration, increased exhaust emissions and reduced vehicle performance, with increased engine stress specifically on the piston & cylinder
- largest factor affecting the fuel economy, torque, and horsepower delivered by the fuel. The energy content of conventional diesel can vary up to 15% from supplier to supplier and from summer to winter. Typical No. 2 diesel fuel has an energy content of around 18,600 Btu/lb. Soy b100 15,940 Btu/lb
- The InfraSpec can measure percent biodiesel in diesel fuel, ethanol in gasoline, water in ethanol as well as total glycerides during the biodiesel reaction process. Using the InfraSpec Spectrometer for making pass/fail determinations for total glycerides can significantly reduce analysis time and increase reactor throughput by as much as 20 percent. The InfraSpec VFA-IR Spectrometer is compact and portable and has a simplified software interface for non-technically trained personnel giving the user the capability to measure the blend ratio of biofuels or total glycerides on site or at a manufacturing facility.
- Paradigm Sensors’ i-SPEC™ Q-100 handheld field unit is capable of testing total glycerin, acid number, and methanol as well as biodiesel concentration, between B0 to B100, correlating with current FTIR and GC reference methodology
- Micro-organisms have been found in diesel fuel forever, and seem to be an increasing issue since the advent of ultra low sulfur diesel fuel. They grow at the water interface at the bottom of the tank, living in the water but feeding off of the fuel—whether that is petrodiesel or biodiesel or a biodiesel blend. If micro-organisms are present in a high enough quantity they can clog a fuel filter. They are relatively easily treated with a variety of conventional biocides which kill the organisms which can then be filtered out. Keeping the water out of tanks on a regular basis can go a long way toward reducing or eliminating micro-organisms. Filters with microbial growth appear black and slimy and typically have an odor different that is normal. There are a variety of microbial testing kits that users can buy to see if their fuel is starting to grow bugs. Its not desirable to regularly treat for bugs unless you actually have them, since you don’t want the bugs to develop a resistance to the biocide.
- Air enters all diesel systems and most of that time the air that comes in bring moisture with it. Air and moisture are the enemies of any fuel system—whether that system is petrodiesel or biodiesel. The presence of air will increase oxidation of the fuel over time. The best thing to do to minimize oxidation is to have good turn over of the fuel and not to store if for long periods of time. Most fueling systems do this as part of normal business, so it doesn’t end up being a problem. If there are systems where the fuel might stay around, fuel stabilizers are recommended as are desiccant dryers on the air vents which will minimize the potential for moisture contamination.
- Advise your customers of these simple steps which will help maintain high quality fuel and minimize filter clogging.