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Biodiesel – SSC Process

Idaho National Laboratory

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Publications:

PDF Document PublicationFact Sheet (1,290 KB)

Technology Marketing Summary

INL’s biodiesel-SSC uses solid catalyst under super-critical fluid conditions to produce biodiesel from a full range of lipid feedstock. This invention provides in a single-phase process for producing alkyl esters from triglycerides or fatty acid material feedstock. The material is mixed with an alcohol and a solvent supercritical gas (e.g. carbon dioxide or alkane) to produce glycerol/glycerin and an alkyl ester out of fatty acid for further refinement. The refining process uses gravity to continue removing the glycerol from the alkyl ester product (e.g. high glycerol within the product means lower quality of biodiesels). This process requires lower temperatures and pressures compared to other processes.

Description

Other uses for this technology include herbicides, pesticide diluents, sticking agent, or lubricating additives for hydraulic and transmission fluids.

Benefits

-        Processes lipid feedstock (0-100% free fatty acid).

-        Eliminates waste by-products.

-        Produces high quality glycerin by-product.

Applications and Industries

Biodiesel, lubricant additive, renewable energy source

More Information

http://www4vip.inl.gov/research/supercritical-solid-catalyst/

Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 7,514,575
Patent
7,514,575
Production of biodiesel using expanded gas solvents
A method of producing an alkyl ester. The method comprises providing an alcohol and a triglyceride or fatty acid. An expanding gas is dissolved into the alcohol to form a gas expanded solvent. The alcohol is reacted with the triglyceride or fatty acid in a single phase to produce the alkyl ester. The expanding gas may be a nonpolar expanding gas, such as carbon dioxide, methane, ethane, propane, butane, pentane, ethylene, propylene, butylene, pentene, isomers thereof, and mixtures thereof, which is dissolved into the alcohol. The gas expanded solvent may be maintained at a temperature below, at, or above a critical temperature of the expanding gas and at a pressure below, at, or above a critical pressure of the expanding gas.
Idaho National Laboratory 04/07/2009
Issued
Patent 6,887,283
Patent
6,887,283
Process for producing biodiesel, lubricants, and fuel and lubricant additives in a critical fluid medium
A process for producing alkyl esters useful in biofuels and lubricants by transesterifying glyceride- or esterifying free fatty acid-containing substances in a single critical phase medium is disclosed. The critical phase medium provides increased reaction rates, decreases the loss of catalyst or catalyst activity and improves the overall yield of desired product. The process involves the steps of dissolving an input glyceride- or free fatty acid-containing substance with an alcohol or water into a critical fluid medium; reacting the glyceride- or free fatty acid-containing substance with the alcohol or water input over either a solid or liquid acidic or basic catalyst and sequentially separating the products from each other and from the critical fluid medium, which critical fluid medium can then be recycled back in the process. The process significantly reduces the cost of producing additives or alternatives to automotive fuels and lubricants utilizing inexpensive glyceride- or free fatty acid-containing substances, such as animal fats, vegetable oils, rendered fats, and restaurant grease.
Idaho National Laboratory 05/03/2005
Issued
Patent 8,747,673
Patent
8,747,673
Methods for recovering a solvent from a fluid volume and methods of removing at least one compound from a nonpolar solvent
A method of removing a nonpolar solvent from a fluid volume that includes at least one nonpolar compound, such as a fat, an oil or a triglyceride, is provided. The method comprises contacting a fluid volume with an expanding gas to expand the nonpolar solvent and form a gas-expanded solvent. The gas-expanded solvent may have a substantially reduced density in comparison to the at least one nonpolar compound and/or a substantially reduced capacity to solubilize the nonpolar compound, causing the nonpolar compounds to separate from the gas-expanded nonpolar solvent into a separate liquid phase. The liquid phase including the at least one nonpolar compound may be separated from the gas-expanded solvent using conventional techniques. After separation of the liquid phase, at least one of the temperature and pressure may be reduced to separate the nonpolar solvent from the expanding gas such that the nonpolar solvent may be recovered and reused.
06/10/2014
Issued
Patent 7,691,270
Patent
7,691,270
Method for removing impurities from an impurity-containing fluid stream
A method of removing at least one polar component from a fluid stream. The method comprises providing a fluid stream comprising at least one nonpolar component and at least one polar component. The fluid stream is contacted with a supercritical solvent to remove the at least one polar component. The at least one nonpolar component may be a fat or oil and the at least one polar component may be water, dirt, detergents, or mixtures thereof. The supercritical solvent may decrease solubility of the at least one polar component in the fluid stream. The supercritical solvent may function as a solvent or as a gas antisolvent. The supercritical solvent may dissolve the nonpolar components of the fluid stream, such as fats or oils, while the polar components may be substantially insoluble. Alternatively, the supercritical solvent may be used to increase the nonpolarity of the fluid stream.
Idaho National Laboratory 04/06/2010
Issued
Patent 8,308,954
Patent
8,308,954
Methods for recovering a polar solvent from a fluid stream contaminated with at least one polar impurity
A method of removing a polar solvent from a fluid volume contaminated with at least one polar impurity, such as a free fatty acid, is provided. The method comprises providing a fluid volume that includes at least one polar impurity dissolved in at least one solvent. The fluid volume is contacted with an expanding gas to remove the at least one solvent. The expanding gas may be dissolved into the at least one solvent in the fluid volume to form a gas-expanded solvent. The immiscibility of the polar impurities in the gas-expanded solvent enables separation of the polar impurities from the gas-expanded solvent. After separation of the polar impurities, at least one of the temperature and pressure may be reduced to separate the solvent from the expanding gas such that the clean solvent may be reused.
Idaho National Laboratory 11/13/2012
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
7691270, 7514575, 6887283ProductionLicensed - License may be available in specific fields of use.09/04/201205/11/2015

Contact INL About This Technology

To: Ryan Bills<Ryan.Bills@inl.gov>