Decoloration technology of biological diesel oil

A biodiesel and decolorization technology, which is applied in the fields of biofuel, petroleum industry, and fat production, can solve the problems of high toxicity, increased equipment and operating costs, and no quantification of decolorization indicators, and achieves high recovery efficiency, high methyl ester content, No effect of waste water pollution

Inactive Publication Date: 2012-01-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some decolorization methods, such as chlorine dioxide, etc., but chlorine dioxide decolorization is selective, and chlorine dioxide is an explosive gas with relatively high toxicity, and the operation requires special control; decolorization and impurity removal using a dielectric gravity field requires strict control of the electric field , increasing equipment and operating costs
In addition, there is no quantification of decolorization indicators in all patents involving decolorization

Method used

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  • Decoloration technology of biological diesel oil
  • Decoloration technology of biological diesel oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, the biodiesel decolorization that dark vegetable oil enzyme catalysis method prepares

[0025] The specific method includes the following steps:

[0026] (1) get 20) 0) g dark crude methyl ester (or thick ethyl ester) that the enzymatic method that obtains makes and add 10g of activated clay and bentonite mixture, activated clay quality is 40% in activated clay and bentonite mixture, the rest For bentonite, the temperature is controlled at 125°C, and the reaction is stirred for 30 minutes.

[0027] (2) Stand still for 1h to separate the phases.

[0028] (3) Take 100 g of the obtained above-mentioned methyl ester (or crude ethyl ester) after adsorption and decolorization, add 6 g of hydrogen peroxide, and stir the reaction for 30 minutes at a temperature of 87° C.

[0029] (3) Centrifuge at 4800rpm for 10 minutes to separate the phases.

[0030] The product obtained above was added to a 1.0 cm cuvette, and the absorption spectrum was scanned at 465 nm to...

Embodiment 2-4

[0034] Embodiment 2-4, change the decolorization purification of the biodiesel that dark vegetable oil production method obtains

[0035]In the same decolorization method as in Example 1, the amount of dark diesel oil processed by activated clay and bentonite and the amount of diesel oil processed by hydrogen peroxide were 200g and 100g respectively. Among them, the dark biodiesel comes from the acid method, the alkali method and the supercritical method respectively, and the amount of the decolorizing agent is changed to obtain purified biodiesel with a decolorization rate above 82%. See Table 2 for the results.

[0036] Table 2 Example 2-4 results

[0037] Variation factor

Embodiment 5-9

[0038] Example 5-9, decolorization of biodiesel prepared from different dark oil raw materials

[0039] Use the method of the present invention to carry out the production, decolorization and purification of biodiesel, the specific method is the same as in Example 1, the difference is that the raw material for producing crude methyl ester is changed, and the important indicators of purified biodiesel are shown in Table 3

[0040] Table 3 Example 5-9 Results

[0041] project name

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Abstract

The invention discloses a decoloration method of biological diesel oil, which comprises the following steps: preparing fatty acid methyl ester (or crude fatty acid ethyl ester) from dark colored raw materials of vegetable oil, animal oil, microbe grease, waste hogwash oil, acidized oil or swill-cooked dirty oil and the like, adsorbing by a mixture of activated clay and bentonite, then carrying out hydrogen peroxide oxidation, and finally carrying out deacidification and dehydration to obtain a biological diesel oil product, the methyl ester content of which meets the national standards (table1) of Germany (EDIN 51606), France, America (ASTM PS-121), China (GB / T 20828-2007) and the like. The decoloration and refining method of the biological diesel oil has no pollution, no need of distillation at normal pressure or reduced pressure, simple operation, rapid decoloration and refining speed and high recovery efficiency, and simultaneously saves the cost on equipment and energy consumption; and the physicochemical properties of the biological diesel oil after decoloration by the method have no larger difference from the physicochemical properties of the biological diesel oil before decoloration.

Description

Technical field: [0001] The invention belongs to the field of biochemical industry, and relates to a method for decolorizing and refining biodiesel. Background technique: [0002] Crude oil shortage has become a topic of worldwide attention, and biodiesel has gradually become a research hotspot because of its superior performance. Biodiesel is a clean fuel refined from renewable resources (such as vegetable oil, soybean oil, recycled cooking oil, etc.). As a new type of renewable energy, biodiesel is environmentally friendly and can replace diesel, and has been widely researched and applied all over the world. [0003] Some dark raw material oils, such as jatropha oil or peanut oil, etc., after esterification or transesterification to prepare biodiesel, the color of the obtained product is also darker. In addition, 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 biodi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B3/10C11B3/08C10L1/02
CPCY02E50/13Y02E50/10
Inventor 谭天伟张海霞聂开立邓利王芳
Owner BEIJING UNIV OF CHEM TECH
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