Method and apparatus for esterifying fatty acid

A free fatty acid, esterification technology, applied in the field of esterified fatty acid, can solve the problems of difficult design, expensive stainless steel, high corrosiveness and so on

Inactive Publication Date: 2012-10-24
RENEWABLE HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in hot acidic liquids, the problem is that it is extremely corrosive
However, these high specification stainless steels are very expensive and certain complex components such as pumps and valves cannot be easily fitted with protective linings
Therefore, it is very difficult to design a system for the esterification of fatty acids in natural oils that can operate at high temperatures and is not that expensive

Method used

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  • Method and apparatus for esterifying fatty acid
  • Method and apparatus for esterifying fatty acid
  • Method and apparatus for esterifying fatty acid

Examples

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Embodiment Construction

[0120] figure 1 is a schematic diagram of an apparatus 1 for esterification of free fatty acids in natural oils and fats. Components are shown schematically and not to scale. Details such as pumps, valves etc. are not shown unless they are required therein to understand the invention. Those skilled in the art will be able to include conventional valves and pumps based on their common knowledge.

[0121] The device 1 comprises a tank 2 for storing natural oils, such as sunflower oil. The natural oil is fed into heater 3 where its temperature is raised to about 150°C. The pump 4 is configured to feed the heated natural oil into the tubular reactor 5 . The pump 4 can be any conventional pump and need not be made of acid resistant material as no acid mixes with the grease at this stage. The feed of natural oils and fats 2 may comprise natural oils and fats which have been processed in the degumming unit 106, which is hereinafter referred to as natural oils or fats obtained by...

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Abstract

A method of esterifying free fatty acid in natural oil comprises heating the natural oil (2) to a first temperature above a reaction temperature, feeding the heated natural oil into an acid-resistant pipe reactor (5), providing a mixture of acid catalyst (6) and short chain alcohol (8) at a second temperature below the reaction temperature, and feeding the mixture of acid catalyst and short chain alcohol into the natural oil in the pipe reactor (5). The short chain alcohol and free fatty acid react at the reaction temperature to form an ester.

Description

technical field [0001] The present invention relates to a method and a device for esterifying fatty acids in a process for the synthesis of biodiesel. Background technique [0002] Biodiesel is produced by transesterification of animal or vegetable oils / fats. Such oils and fats include triglyceride esters containing long chain fatty acid moieties. In biodiesel synthesis, such triglycerides are transesterified with short-chain alcohols (usually methanol, sometimes ethanol, although others are also used). The reaction can be carried out in the presence of an acid or base catalyst, and usually a base catalyst will be faster, with sodium or potassium hydroxide being the most common. Typically, sodium or potassium hydroxide having a relatively low water content, especially in powder or pellet form, is mixed with an alcohol, such as methanol, and then mixed with fats and oils. Typically, the oil or fat also includes some amount of long chain fatty acids as free fatty acids, rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/24C07C67/08C10L1/18C11C3/00
CPCC10L1/19C10L2200/0476C10L2290/56C11C3/003Y02E50/13C07C67/08C10L2290/141C10L1/026C10G2300/1011B01J19/2415C10G2300/4075C10L2290/54Y02P30/20Y02E50/10C07C69/52C07C69/24
Inventor 理查德·戴维斯·杰克逊欧文·马修·戴维斯
Owner RENEWABLE HLDG LTD
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