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Biodiesel oil producing process

A biodiesel and production method technology, applied to driven animals, vegetable fats and oils, which can solve the problems of little contribution to transesterification reaction selectivity and conversion rate, complex catalyst separation process, high catalyst price, etc., and achieve low production cost And equipment investment, increase miscibility, reduce the effect of refining process

Active Publication Date: 2009-09-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this method can avoid or shorten the initial stage of transesterification, the reaction time is shortened, but the selectivity and conversion rate of the transesterification reaction are not greatly contributed; the reaction needs to be recycled, which increases energy consumption; the reaction process is selected The catalyst price is high; the transesterification reaction process itself generates water, and water is poisonous to the catalyst selected for the reaction, so the catalyst life is short; the catalytically active salt insoluble in the reaction mixture must be deposited on the carrier, and the catalyst preparation and / or separation process is complicated

Method used

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  • Biodiesel oil producing process
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  • Biodiesel oil producing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Methanol and cottonseed oil are mixed according to the ratio that the molar ratio of methanol and cottonseed oil is 10, then add 10% (accounting for the weight of cottonseed oil) of diethylamine, equal to the impact flow reaction volume with the feed rate of cottonseed oil (i.e. The material volume space velocity is 1h -1 , that is, the reaction time is 1h), the cottonseed oil and methanol are pumped into the impingement flow reactor, and the transesterification reaction occurs through the impact. The amount of recycled material is 95% of the feed amount. Control reaction temperature is 130 ℃, and reaction pressure is 0.8MPa, and the reaction product that flows out from impingement flow reactor discharge port is separated by standing, obtains fatty acid ester phase (upper layer), utilizes the 6890N gas chromatograph analysis of Agilent Company, measures The obtained fatty acid triglyceride conversion rate is 95%, and the content of methyl ester in the fatty acid ester ...

Embodiment 2

[0028] According to the method of Example 1, only the feed rate is 1 / 2 of the impinging flow reactor, and the amount of circulating material is still 95% of the feed amount. The reaction product flowing out from the discharge port of the impingement flow reactor is separated by standing to obtain the fatty acid ester phase (upper layer), which is analyzed by the 6890N gas chromatograph of Agilent Company, and the conversion rate of fatty acid triglyceride is 97%, and the fatty acid triglyceride The content of methyl ester in the ester phase was 93.8%. The glycerol content in the lower glycerol phase was 80%.

Embodiment 3

[0030] According to the method of Example 1, the feed rate is a ratio of 1 / 4 of the impingement flow reactor volume, and the circulating material rate is 95% of the feed amount. The reaction product flowing out from the discharge port of the impingement flow reactor is separated by standing to obtain the fatty acid ester phase (upper layer). Utilizing the 6890N gas chromatograph analysis of Agilent Company, the conversion rate of fatty acid triglyceride is 98%, and the fatty acid triglyceride The content of methyl ester in the ester phase was 90%. The glycerol content in the lower glycerol phase was 75%.

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Abstract

The present invention relates to process of producing biodiesel oil with fatty triglyceride, especially with animal and vegetable oil and grease. Biodiesel oil is produced inside a high efficiency bumping flow reactor, in the presence of inorganic alkali or organic alkali catalyst, under mild condition, and in high conversion rate, with the organic alkali catalyst being used circularly. Compared with available technology, the process of the present invention has the advantages of simple flow path, mild condition, high conversion rate, less side products, capacity of utilizing various kinds of animal and vegetable oil and grease, etc.

Description

technical field [0001] The invention relates to a method for producing biodiesel, in particular to a method for producing biodiesel from fatty acid triglycerides, especially animal and vegetable fats and oils. Background technique [0002] Fatty acid triglycerides, especially animal and vegetable fats and oils, monoglycerides obtained by transesterification with low molecular weight monohydric alcohols, have similar properties to diesel oil obtained from petroleum fractions, and can be used as fuels. The fuel obtained in this way is called biodiesel. [0003] The biodiesel produced by the transesterification reaction of oil has the following advantages: 1) It has excellent environmental protection characteristics. Biodiesel has low sulfur content and does not contain aromatic hydrocarbons that pollute the environment. 2) It has good engine low-temperature starting performance, and the condensation point reaches -20°C without additives. 3) It has good lubricating performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 霍稳周黎元生吕清林陈明李花伊高飞
Owner CHINA PETROLEUM & CHEM CORP