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Production of biological diesel oil by high-acid value grease

A high acid value oil and biodiesel technology, applied in the preparation of biological raw materials, biofuels, liquid hydrocarbon mixtures, etc., can solve problems such as acid removal, and achieve the effects of improving yield, shortening reaction time, and speeding up production speed

Inactive Publication Date: 2007-11-21
SHANDONG PEANUT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is necessary to solve the problem of acid removal in the first step of catalytic process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 100g of peanut oil leftovers (acid value of 150) and put it into the conical flask, add 40g of methanol and 2 grams of tin tetrachloride, and mix the above-mentioned various substances in the conical flask to carry out pre-esterification reaction; temperature of reaction is 60°C, and the reaction time is 2h. After the reaction was completed, the layers were left to stand for 20 min, and the catalyst and glycerol in the lower layer were removed by centrifugation. After the catalyst KOH was dissolved in methanol, it was added to the reaction kettle together with the remaining oil for esterification. The reaction temperature was 60 ° C, KOH accounted for 1.2% of the weight of the remaining oil, the mass ratio of alcohol to oil was 1:8, and the reaction time was 50 min. . After the reaction was completed, it was left to stand for stratification for 60 min. The upper layer was mainly fatty acid methyl ester and a small amount of methanol, and the lower layer was mainl...

Embodiment 2

[0019] Weigh 100g of waste oil (acid value of 90) and put it into the conical flask, add 50g of methanol and 3 grams of tin tetrachloride, and mix the above-mentioned various substances in the conical flask to carry out pre-esterification reaction; temperature of reaction is 60°C, the reaction time was 3h. After the reaction was completed, the layers were left to stand for 20 min, and the catalyst and glycerol in the lower layer were removed by centrifugation. After the catalyst KOH was dissolved in methanol, it was added to the reaction kettle together with the remaining oil for esterification. The reaction temperature was 60 ° C, KOH accounted for 1.2% of the weight of the remaining oil, the mass ratio of alcohol to oil was 1:8, and the reaction time was 50 min. . After the reaction was completed, it was left to stand for stratification for 60 min. The upper layer was mainly fatty acid methyl ester and a small amount of methanol, and the lower layer was mainly composed of g...

Embodiment 3

[0021] Weigh 200g of frying oil (acid value of 30) and put it into the conical flask, add 80g of methanol and 4 grams of tin tetrachloride, mix the above-mentioned various substances in the conical flask and carry out pre-esterification reaction; is 60°C, and the reaction time is 2h. After the reaction was completed, the layers were left to stand for 20 min, and the catalyst and glycerol in the lower layer were removed by centrifugation. After the catalyst KOH was dissolved in methanol, it was added to the reaction kettle together with the remaining oil for esterification. The reaction temperature was 60 ° C, KOH accounted for 1.2% of the weight of the remaining oil, the mass ratio of alcohol to oil was 1:8, and the reaction time was 50 min. . After the reaction was completed, it was left to stand for stratification for 60 min. The upper layer was mainly fatty acid methyl ester and a small amount of methanol, and the lower layer was mainly composed of glycerol, KOH, and a sma...

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Abstract

Production of biological diesel-oil by peanut-oil offal and waste edible oil etc. high-acidity grease is carried out by pre- esterification reacting liquefied catalyst tin tetrachloride with free fatty acid from waste grease to decrease acidity, centrifugal removing catalyst and glycerol, trans-esterifying for residual grease by KOH to generate biological diesel-oil. It's convenient and efficient, has gentle reactive condition and better quality.

Description

technical field [0001] The invention relates to a new method for producing biodiesel by utilizing high-acid value oils and fats such as peanut oil leftovers and waste oil, and belongs to the technology of producing biodiesel from waste oils and fats. Specifically, biodiesel is prepared by two-step pre-esterification and esterification of waste oils and fats from different sources under the action of tin tetrachloride and KOH catalysts. Background technique [0002] Biodiesel is a clean and safe new fuel that can replace petrochemical diesel and is produced from renewable resources such as vegetable fat or animal fat. The main components are ester compounds formed by long-chain saturated unsaturated fatty acids such as palmitic acid, stearic acid, oleic acid, and linoleic acid with methanol or ethanol. Biodiesel has the characteristics of being renewable, easy to biodegrade, low emission of combustion pollutants, and low greenhouse gas emissions. Biodiesel has similar prope...

Claims

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Application Information

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IPC IPC(8): C10G3/00C11C3/10
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 杨庆利禹山林朱凤潘丽娟曹玉良
Owner SHANDONG PEANUT RES INST
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