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Method for refining biologic diesel oil, phospholipid and glycerin by using leftovers of vegetable oil

A technology of biodiesel and scraps, which is applied in the directions of edible phospholipid compositions, biofuels, biological raw materials, etc., can solve the problems of waste of natural resources, environmental pollution, insufficient utilization of scrap resources, etc., and achieves improved conversion rate, emission No pollution, fast response time

Inactive Publication Date: 2007-05-09
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Leftovers are a by-product of the oil production process. The total amount of leftovers in my country is more than 1 million tons per year. For a long time, the resources of leftovers have not been fully utilized. Some leftovers are used to produce inferior soaps and crude fatty acids of poor quality, and even Abandoned, which undoubtedly caused environmental pollution and a great waste of natural resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Fully mix 400g of fresh soybean oil scraps (oil bottoms, soap stock mixture) with 40ml saturated salt water, and stir for 10 minutes. Add 800ml of n-hexane and mix thoroughly and then stir for 20 minutes. After centrifugation, it is divided into 3 layers: the upper layer is the organic phase, the middle layer is soap, and the lower layer is the water phase. Take the upper organic phase and rotate it to evaporate, recover the organic solvent, dissolve the concentrate with ether, and then add an appropriate amount of acetone of the same volume, immediately a light yellow precipitate precipitates out. Suction filtration under reduced pressure to collect the filter cake. The filter cake was vacuum-dried at 50°C to obtain 12.8 g of light yellow phospholipid. The filtrate was then rotary evaporated to recover acetone, and the remaining part was neutral oil. Take 100g of the neutral oil obtained by combining multiple extractions and dehydrate it and add it to a 500ml three-n...

Embodiment 2

[0024] Fully mix 400g of fresh rapeseed oil scraps (oil bottoms, soap stock mixture) with 20ml saturated salt water, and stir for 20 minutes. Add 400ml of petroleum ether and mix thoroughly, then stir for 30 minutes. After centrifugation, it is divided into 3 layers: the upper layer is the organic phase, the middle layer is soap, and the lower layer is the water phase. The upper organic phase was rotary evaporated, the organic solvent was recovered, the concentrate was dissolved in ether, and then twice the volume of cold acetone (4°C) was added, and a pale yellow precipitate immediately precipitated out. Suction filtration under reduced pressure to collect the filter cake. The filter cake was vacuum-dried at 40°C to obtain 8.62 g of light yellow phospholipid. The filtrate was then rotary evaporated to recover acetone, and the remaining part was neutral oil. Take 100g of the neutral oil obtained by combining multiple extractions, dehydrate it, and add it to a 500ml three-nec...

Embodiment 3

[0026] Fully mix 400g of fresh cottonseed scraps (oil foot, soap foot mixture) with 60ml saturated salt water, and stir for 10 minutes. Add 400ml of diethyl ether and mix thoroughly and then stir for 30 minutes. After centrifugation, it is divided into 3 layers: the upper layer is the organic phase, the middle layer is the soap, and the lower layer is the aqueous phase. The upper organic phase was rotary evaporated, the organic solvent was recovered, the concentrate was dissolved in ether, and then three times the volume of acetone was added, and a light yellow precipitate was immediately precipitated. Suction filtration under reduced pressure to collect the filter cake. The filter cake was vacuum-dried at 60°C to obtain 11.46 g of light yellow phospholipid. The filtrate was then rotary evaporated to recover acetone, and the remaining part was neutral oil. Take 100g of the neutral oil obtained by combining multiple extractions, dehydrate it, and add it to a 500ml three-neck ...

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Abstract

This invention discloses a method for producing biodiesel oil, phospholipid and glycerol from waste plant oil. The method comprises: (1) extracting the raw material to separate phospholipid, neutral oil and soap; (2) performing interesterification on neutral oil to obtain biodiesel oil and glycerol; (3) acidifying and esterifying the soap to obtain biodiesel oil. The method has such advantages as short reaction time, simple process, high conversion rate of biodiesel oil, low energy consumption, easy recovery of the products, and no pollution. The produced biodiesel oil can satisfy the international DIN V 51.606 standard and China 2# diesel oil standard. The method utilizes waste plant oil to produce biodiesel oil, thus largely reduces the cost and is suitable for mass production.

Description

technical field [0001] The invention belongs to the field of biological energy, and specifically relates to a method for refining biodiesel with vegetable oil leftovers as raw materials and simultaneously obtaining high value-added by-products phospholipids and glycerin. Background technique [0002] With the development of the global economy, energy consumption is increasing worldwide. In contrast, traditional energy reserves are very limited. Moreover, with the enhancement of human environmental protection awareness, it is urgent for people to find new alternative energy sources. In such an environment, biofuel technology came into being. As a substitute for petroleum diesel, biodiesel has great potential and broad market prospects. [0003] Biodiesel is environmentally friendly, does not contain aromatic hydrocarbons and has a very low sulfur content. Compared with petroleum diesel, it greatly reduces the emission of major pollutants. The exhaust gas emission index mee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00C07F9/10C07C31/22
CPCY02E50/13Y02E50/10Y02P20/50Y02P30/20
Inventor 余龙江金波朱敏樊培
Owner HUAZHONG UNIV OF SCI & TECH
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