Process for producing biodiesel, lubricants, and fuel and lubricant additives in a critical fluid medium

Ginosar, Daniel M.; Fox, Robert V.

Process for producing biodiesel, lubricants, and fuel and lubricant additives in a critical fluid medium

Patent · Tue May 03 04:00:00 EDT 2005

OSTI ID:1175334

Ginosar, Daniel M.; Fox, Robert V.

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.

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Research Organization:: Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC07-94ID13223

Assignee:: Bechtel BWXT Idaho, LLC (Idaho Falls, ID)

Patent Number(s):: 6,887,283

Application Number:: 09/554,708

OSTI ID:: 1175334

Country of Publication:: United States

Language:: English

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