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Refining processes for a renewable oil

a technology of renewable oil and refining process, which is applied in the direction of liquid carbonaceous fuels, fatty oils/fat refining, fuels, etc., can solve the problems of reducing process efficiency, limiting the operating range, and cloudy oil appearance, so as to reduce the cloud point of renewable oil

Inactive Publication Date: 2014-12-04
ADVANCED ENERGY DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a method to make a better quality renewable oil by removing waxy impurities. The method involves cooling the oil and adding a polymer to solidify the impurities. Then, the solidified impurities are separated from the oil to create a purer oil.

Problems solved by technology

Crude vegetable oils and other biofuels can contain waxes and gums that precipitate as solids under certain operating conditions, giving a cloudy appearance to the oil.
While these waxes and gums can result from a variety of impurities in the oil, they are often the result of phosphorus-containing impurities in the oil.
The presence of these impurities in the oil can render the oil unusable as a fuel source, or, if usable, can limit its operating range.
Such washing can cause substantial loss of oil, thereby lowering the efficiency of the process and increasing the operating costs.
In some cases, such as with enzymatic degumming, the materials are expensive, and add considerable costs to the process.
Other processes require expensive equipment, which increase the capital expenditures involved in carrying out the process.

Method used

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  • Refining processes for a renewable oil
  • Refining processes for a renewable oil
  • Refining processes for a renewable oil

Examples

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[0038]A crude corn oil sample (100 kg) is obtained, which contains about 14 weight percent free fatty acids and also contains certain phosphorus-containing compounds, such as phospholipids or their derivatives. The oil is cooled in a refrigerated tank to about −6° C. An amount of PVPP (1-2 kg) is added, and mixed into the renewable oil using an industrial mixer. The polymer is mixed into the oil for about 5 minutes, while maintaining the oil at a temperature of about −6° C. The resulting oil-polymer mixture is centrifuged, so as to separate precipitated particles from the renewable oil. The refined oil is then collected. About 95% of the original oil is recovered in the process. The cloud point is reduced by 4° C.

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Abstract

The invention relates generally to methods of refining a renewable oil, such as a biofuel. In some embodiments, the invention relates to methods for the efficient removal of gums and waxes from a renewable oil.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is nonprovisional of, and claims the benefit of U.S. Patent Application No. 61 / 830,923 filed Jun. 4, 2013, the entire contents of which is incorporated herein by reference for all purposes.FIELD OF THE INVENTION[0002]The invention relates generally to methods of refining a renewable oil, such as a biofuel. In some embodiments, the invention relates to methods for the efficient removal of gums and waxes from a renewable oil.BACKGROUND[0003]Crude vegetable oils and other biofuels can contain waxes and gums that precipitate as solids under certain operating conditions, giving a cloudy appearance to the oil. While these waxes and gums can result from a variety of impurities in the oil, they are often the result of phosphorus-containing impurities in the oil. Such phosphorus-containing impurities can include phosphatides, such as hydratable phosphatides and non-hydratable phosphatides. These impurities can enter the oil from a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L1/02
CPCC10L1/02C11B3/006C11B3/16
Inventor MORGAN, TREVOR G.VYTLACIL, TOMNEELEY, COLBYDEVLIN, CHARLES
Owner ADVANCED ENERGY DEV