Automotive fuels and fine chemicals from crude tall oil

A technology of tall oil and esterification, applied in the field of manufacturing fatty acid alkyl esters, can solve the problem of high content of sulfur compounds, and achieve the effects of increasing yield and improving oxidation stability

Inactive Publication Date: 2008-10-29
桑佩有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another problem associated with tall oil as a biodiesel feedstock is the rather high content of sulfur compounds in tall oil (500-1000ppm)

Method used

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  • Automotive fuels and fine chemicals from crude tall oil

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Embodiment Construction

[0028]The inventors of the present invention have discovered a new and efficient process for the preparation of pure fatty acid alkyl esters (fatty acid alkyl esters) in high yields from fatty acids present in tall oil. In addition, a valuable by-product stream containing resin acids was also found. Optionally, a stream of neutral components can be recovered as another valuable by-product stream.

[0029] The feed material of the present invention is tall oil derived from crude tall oil soaps traditionally recovered in alkaline pulp mills. Crude tall oil soap contains fatty and resinic acid soaps, neutral organic components and a small portion of entrained black liquor components (lignin, sulfur compounds and fibers). As a first step, most of the entrained black liquor components in the crude tall oil soap can be removed by mechanical / physical separation using, for example, a decanter centrifuge. The mechanically / physically purified crude tall oil soap may then be further pu...

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Abstract

There is disclosed a method for manufacturing fatty acid alkyl esters from tall oil comprising the steps of a) esterifying tall oil in at least one esterification reactor in the presence of an acidic catalyst and an C1 to C8 alcohol to form a crude product stream comprising fatty acid alkyl esters and H2O, b) separating H2O and alcohol from the crude product stream formed in step a) to form a dehydrated fatty acid alkyl ester product stream, and c) separating dehydrated fatty acid alkyl ester product stream from step b) into at least two product streams wherein one product stream is enriched in fatty acid alkyl esters and one product stream is enriched in resin acid compounds. There are disclosed fatty acid alkyl esters and resin acids manufactured by the method. Moreover there is disclosed a fuel composition and its use as an automotive fuel, said fuel composition comprises the fatty acid alkyl esters produced according to the present invention.

Description

technical field [0001] The present invention relates to a process for the manufacture of fatty acid alkyl esters from crude tall oil (CTO) and other fatty acid enriched feedstocks. The invention further relates to fatty acid alkyl esters and resin acids formed in said process. Furthermore, the present invention relates to motor fuels containing fatty acid alkyl esters produced according to the method of the present invention. Background technique [0002] At a time of high cost of fossil fuels and considerations of greenhouse gas emissions, interest in manufacturing automotive fuels and chemicals from "green resources" such as wood has increased. [0003] From an environmental and economical standpoint, it is desirable to replace conventional motor fuels derived from crude oil with motor fuels derived from renewable resources. Tall oil is a renewable raw material derived from wood. Tall oil contains organic compounds that can be converted into fuel for internal combustion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/04C07C68/08C07C69/003C10L1/02C10L1/18C11B13/00
CPCC10L1/19C11C3/003C10L1/02C07C67/08Y02P20/10C07C69/24C07C69/52
Inventor 拉斯·斯蒂格森
Owner 桑佩有限责任公司
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