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Method for improving oxidation stability of biodiesel

A technology of oxidation stability and biodiesel, which is applied in the direction of biofuel, petroleum industry, liquid carbon-containing fuel, etc., can solve the problems of poor anti-oxidation performance and achieve good anti-oxidation performance, good lubricity, and good compatibility

Inactive Publication Date: 2010-06-30
江苏永林油脂科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the shortcomings of the poor oxidation resistance of biodiesel, and propose an antioxidant that not only improves the use performance but also improves the oxidation stability, so as to meet the necessary conditions for the use of biodiesel instead of petrochemical diesel.

Method used

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  • Method for improving oxidation stability of biodiesel
  • Method for improving oxidation stability of biodiesel

Examples

Experimental program
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Effect test

example 1

[0012] Example 1 Put 500 g of biodiesel with an oxidation stability of 6.60h and a freezing point of 14.3°C into a compounding kettle, heat it to 20°C (because the room temperature is 5°C, the biodiesel is in a crystalline state), add methyl isostearate 2.5g, constant temperature of 20℃, stirring for 0.53h, 502.5g of compound diesel oil with good oxidation stability was obtained. After testing, the oxidation stability of the compound biodiesel was 6.82h.

example 2

[0013] Example 2 Put 1000g of biodiesel with an oxidation stability of 5.25h and a freezing point of 3.5°C into a compounding kettle, add 20.0g of methyl isostearate, stir at normal temperature and pressure for 0.5h, and discharge to obtain 1020.0g of oxidation stability Good compound biodiesel. After testing, the oxidation stability of compound diesel is 6.08h.

example 3

[0014] Example 3 Put 1000 g of biodiesel with an oxidation stability of 7.75h and a freezing point of 19.7°C into a compounding kettle, heat it to 25°C (because the room temperature is 10°C, the biodiesel is in a crystalline state), add methyl isostearate 10.0g, stirred at a constant temperature of 25°C for 0.51h, and discharged to obtain 1010.0g of compound diesel oil with good oxidation stability. After testing, the oxidation stability of the compound biodiesel was 8.26h.

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Abstract

The invention relates to a method for improving the oxidation stability of biodiesel, belonging to the technical field of fine chemical engineering. The complex biodiesel having high oxidation stability is obtained by adding methyl isostearate to the biodiesel by a certain ratio and evenly stirring. By adding methyl isostearate as antioxidant to the biodiesel, the method of the invention can improve both the stability and low-temperature fluidity of the biodiesel, ensure the biocompatibility with the biodiesel and further improve the lubricating property of an engine; and the complex formulation process is simple and safe.

Description

technical field [0001] The present technology proposes the invention of adding methyl isostearate to improve the oxidation stability of biodiesel, which belongs to the technical field of fine chemicals. Background technique [0002] As an alternative fuel or additive for diesel, biodiesel should meet the requirements of diesel to ensure its performance as a fuel. To evaluate whether biodiesel can be used as an alternative fuel for mineral diesel, it is of great significance to examine the antioxidant properties of biodiesel, that is, oxidation stability. Oxidation stability is the test basis for the national standard of biodiesel (BD100) according to the provisions of EN14112, the stabilization time of biodiesel heated to 110 ℃. Achieving the standard of oxidation stability is a necessary condition for the applicability of biodiesel as a fuel. The purpose of improving the oxidation stability can be achieved by adjusting the components of biodiesel, that is, increasing the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/19C10L1/02C10L10/00
CPCY02E50/13Y02E50/10
Inventor 徐永林殷小平
Owner 江苏永林油脂科技有限公司