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Method for decoloring biodiesel prepared from illegal cooking oil

A biodiesel and waste oil technology, which is applied in the fields of biofuel, fat oil/fat refining, petroleum industry, etc., can solve the problems of wasting water, large industrial waste water, poor decolorization effect, etc. The effect of carbon reduction

Inactive Publication Date: 2013-05-01
青岛福瑞斯生物能源科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a decolorization method for preparing biodiesel from waste oil, which can solve the problems of poor decolorization effect in the prior art, waste of water in the washing process and generation of a large amount of industrial waste water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of alkaline decolorizing agent: use sodium bentonite as raw material, mix well with sodium carbonate whose mass is 5‰ of sodium bentonite, dry at 105°C for 30 minutes, grind to 200 mesh to obtain alkaline decolorizing agent. Send 200 meshes of alkaline decolorizer into drying equipment and dry at 105°C for 240 minutes, then take it out, put it into a drying container to cool naturally, and set aside. A water-absorbing agent or a moisture-absorbing agent is housed in the drying container, and the water-absorbing agent or the moisture-absorbing agent is used for drying.

[0022] (1) Pretreatment

[0023] Put the waste oil into the treatment tank, add hot water with 20% waste oil quality, the water temperature is 90-95 ° C, and stir at 60-80 rpm for 20 minutes, let it stand for precipitation, and make the solid particles in the oil Impurities such as phospholipids and proteins are dissolved in water to form a liquid separation layer. The mixture in the lower ...

Embodiment 2

[0029] Preparation of alkaline decolorizing agent: use sodium bentonite as raw material, mix well with sodium carbonate whose mass is 4‰ of sodium bentonite, dry at 100°C for 40 minutes, grind to 180 mesh to obtain alkaline decolorizing agent. Put the 180-mesh alkaline decolorizer into the drying equipment and dry it at 100°C for 260 minutes, then take it out, put it into a drying container to cool naturally, and set it aside. A water-absorbing agent or a moisture-absorbing agent is housed in the drying container, and the water-absorbing agent or the moisture-absorbing agent is used for drying.

[0030] (1) Pretreatment

[0031] Put the waste oil into the treatment tank, add hot water with 18% waste oil quality, the water temperature is 90-95 ° C, and stir at 60-80 rpm for 15 minutes, let it stand for precipitation, and make the solid particles in the oil Impurities such as phospholipids and proteins are dissolved in water to form a liquid separation layer. The mixture in th...

Embodiment 3

[0037] Preparation of alkaline decolorizing agent: use sodium bentonite as raw material, mix well with sodium carbonate whose mass is 6‰ of sodium bentonite, dry at 110°C for 35 minutes, grind to 220 mesh to obtain alkaline decolorizing agent. Put the 220-mesh alkaline decolorizer into the equipment and dry it at 110°C for 230 minutes, then take it out, put it into a drying container to cool naturally, and set it aside. A water-absorbing agent or a moisture-absorbing agent is housed in the drying container, and the water-absorbing agent or the moisture-absorbing agent is used for drying.

[0038] (1) Pretreatment

[0039] Put the waste oil into the treatment tank, add hot water with 22% waste oil quality, the water temperature is 90-95 ° C, and stir at 60-80 rpm for 25 minutes, let it stand for precipitation, and make the solid particles in the oil Impurities such as phospholipids and proteins are dissolved in water to form a liquid separation layer. The mixture in the lower...

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Abstract

The invention provides a method for decoloring biodiesel prepared from illegal cooking oil, which can solve the problems of poor decoloring effect, waste of water in a water wash procedure and a great deal of industrial waste water in the prior art. The method for decoloring the biodiesel prepared from the illegal cooking oil comprises the following steps of: (1) performing pretreatment; (2) performing solid acid catalytic treatment; and (3) decoloring crude diesel, wherein the step (3) particularly comprises the following steps of: allowing the crude diesel subjected to the solid acid catalytic treatment to flow from a diesel intermediate tank to a diesel decoloring tank; heating the diesel to 55 to 65 DEG C under stirring; adding an alkaline decoloring agent in an amount which is 4 to 6percent based on the mass of the crude diesel; heating the mixture to 100 to 110 DEG C in 15 to 20 minutes; preserving the heat; performing decoloration for 15 to 25 minutes; filtering to obtain light yellow biodiesel; and then allowing the light yellow biodiesel to enter a biodiesel finished product tank. In the method, the alkaline decoloring agent is adopted, so good decoloring effect is achieved; water washing procedure is avoided; water resources are saved; and environmental pollution is avoided.

Description

technical field [0001] The invention relates to a decolorization method for preparing biodiesel from waste oil. Background technique [0002] In view of my country's national conditions and the characteristics of oil resources, in order to realize the raw material supply and stable production of biodiesel without increasing the pressure of vegetable oil production, waste oil, acidified oil, and hogwash oil are considered by more and more people as biodiesel at low prices. Ideal raw material for diesel. After the cooking oil is repeatedly used for high-temperature frying, the phospholipids and proteins in the oil begin to decompose, denature or react with other substances to form a large number of dark substances; at the same time, the fatty acids and glycerides of the oil itself will also be used under high temperature and reaction When it is used, it will generate colored substances or the glycerin part will also generate colored substances or potentially colored substances...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C3/10C11B3/10C11B3/00C10L1/02
CPCY02E50/13Y02E50/10
Inventor 杨微
Owner 青岛福瑞斯生物能源科技开发有限公司
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