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Conditioning used frying oil for conversion to biodiesel Sponsored by J.R. Simplot, Inc .

Team French Fry Fuel Shane Bird, Marie Stark, Kate Burlingame, Chuck Weatherspoon, John Neal. Conditioning used frying oil for conversion to biodiesel Sponsored by J.R. Simplot, Inc . Design Review Outline. Background Problem Statement Mainstream Oil MOP & WESP Oil

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Conditioning used frying oil for conversion to biodiesel Sponsored by J.R. Simplot, Inc .

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  1. Team French Fry Fuel Shane Bird, Marie Stark, Kate Burlingame, Chuck Weatherspoon, John Neal Conditioning used frying oil for conversion to biodieselSponsored by J.R. Simplot, Inc.

  2. Design Review Outline • Background • Problem Statement • Mainstream Oil • MOP & WESP Oil • Elimination of FFA Reduction Processes • WESP Oil Recovery Design Processes • Settling Tanks • In-Line Bag Filter • Centrifuge • WESP Oil Design Flow • Prototype • Prototype Test Results • Economic Analysis of Full Scale Design

  3. Background • The J.R. Simplot Company is an agricultural plant that manufactures frozen fruits, juices and vegetables. The Caldwell plant generates 2 million pounds of oil each year. Simplot would like to condition this oil and convert it to biodiesel, which would then be returned to Simplot to offset the diesel used in the transportation fleet. • Benefits: • Economically Advantageous • Environmentally Friendly • How it works: http://www.greener-industry.org/pages/greener_cars/images/fuel_Diag12.gif

  4. Problem Statement • The waste oil generated in production lines forms three waste streams that have varying compositions and production rates. • Biodiesel plants have specifications that incoming oil must meet. In order to meet these specifications, Simplot must develop a system that conditions their waste oil to the following characteristics: • <4% FFA • <0.1% Water by weight • <50-100 micron particulate size

  5. Specific Design Challenges: Mainstream Oil • After initial testing, the primary oil stream was tested and determined to be suitable for biodiesel production. • Two rail cars have been already been processed.

  6. Specific Design Challenges: MOP and WESP • There are two additional oil streams • The oil collected from the atmosphere in the plant and sent to a Wet Electrostatic Precipitator (WESP) • The oil recovered from the floor of the plant (MOP) • The MOP and the WESP oils currently combine in a dissolved air flotation tank. However, because the streams exhibited dramatically different characteristics, they were examined as separate components. • The oils were high in particulate matter and water content.

  7. Elimination of FFA Reduction Process • WESP laboratory analysis concluded: • WESP oil: FFA= 0.61% • Therefore oil is below biodiesel conversion max FFA content specs • Eliminated sub-process of FFA reduction in integrated design process • Benefits • Lowers production costs • Eliminates potential hazards of acid-esterification

  8. WESP Oil Recovery Design Process WESP Water - Oil T = 140°F 2 - 7500 Gallon Settling Tanks (304 Stainless Steel) Heat Tracing T = 140°F Bag Filter 3.32 gpm Centrifuge (316 Stainless Steel) 3500 Gallon Oil Storage Tank (304 Stainless Steel) Heat Tracing T = 140°F 3.32 gpm Rotary Positive Displacement Pump Oil Shipping 3.32 gpm Rotary Positive Displacement Pump Waste Water Stream

  9. Settling Tanks: Particulate and Water Removal • Two - 7,500 gallon settling tanks • Heat traced for heating and separating of water from oil • Valve controls flow of WESP oil into the two tanks • Water and large particles drain into wastewater stream http://www.abprocess.com/photoview.php?index=18&industry=1&product=34&service=&results=50

  10. In-line Bag Filter: Particulate Removal • Removable filter bag • Removes particulates larger than 50-100µm • Bags changed 1-2 weeks depending on variations in flow • In-line Bag Filter

  11. Centrifuge: Water and Particulate Removal • Reduces remaining water to less than 0.1% water in the oil • Removes any particulates and impurities in oil • Continuous flow • http://www.dolphinmarine.com/BRPX413_Skid.jpg

  12. WESP Oil Design Flow • Designed for a continuous flow process • Integrates and targets the remaining two design parameters (reducing water and particulate content)

  13. Prototype • Settling Tank • Heater • Flow Control Valve • Pump • Collection Tank 4 2 1 5 3

  14. Prototype Test Results Oil after centrifuge Oil before centrifuge

  15. Plant Design Cost Analysis • Order of magnitude cost estimate based on purchased equipment costs • Obtained 2002 average equipment costs for main components of the full scale design • Used the Chemical Engineering Plant Cost Index (CEPCI) to scale design cost for 2007 prices

  16. Capital Investment

  17. Questions? Questions, comments, clarifications??

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