Application of modified biological diesel oil as low sulfur diesel oil antiwear agent

A biodiesel and low-sulfur diesel technology, applied in the field of diesel antiwear agents, can solve the problems of high cost, poor economy, and poor use effect of antiwear agents, and achieve the effects of improving lubricity, low cost, and easy availability of raw materials

Active Publication Date: 2007-07-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these products have the advantages of easy-to-obtain raw materials and relatively cheap prices, their use effects are relatively poor. At the same time, due to their high viscosity, they are easy to precipitate at low temperatures, which also brings inconvenience to their practical applications.
[0007] Biodiesel can also be directly used as an antiwear agent for low-sulfur diesel oil. It has almost no effect when the amount added i

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] Put 200g of biodiesel A, 100g of triethanolamine (the molar ratio of biodiesel A to triethanolamine is about 1:2) and 6g of sodium methoxide / methanol solution in a tank equipped with electric stirrer, thermometer, reflux condenser and reflux water separator. In the reactor of the reactor, heat and stir to raise the temperature to 150 ° C, react for 5 hours, separate about 17.5 g of methanol, cool to 80 ° C, add 12 g of acid clay for neutralization, and filter to obtain the product.

example 2

[0032] Put 200g of biodiesel B and 79g of triethylenetetramine (the molar ratio of biodiesel B to triethylenetetramine is about 1:0.8) in a tank equipped with electric stirrer, thermometer, reflux condenser, reflux water separator and nitrogen gas Into the reactor of the pipe, feed nitrogen for 5 to 10 minutes, and maintain a very weak nitrogen flow during the reaction, heat and stir to raise the temperature to 130 ° C, reflux for 7 hours, separate methanol 14.9g, and cool to obtain the product.

example 3

[0034] Put 200g of biodiesel C, 68g of glycerin (the molar ratio of biodiesel C to glycerol is about 1:1.1) and 2g of concentrated sulfuric acid in a tank equipped with electric stirrer, thermometer, reflux condenser, reflux water separator and nitrogen inlet pipe. In the reactor, nitrogen gas was introduced for 5 to 10 minutes, and a very weak nitrogen flow was maintained during the reaction process, heated and stirred to raise the temperature to 140°C, and refluxed for 6 hours to separate methanol 17.3g, cool to 70°C and then add 1.7 gCa(OH) 2 Neutralization, 3g diatomaceous earth filter aid, filter the reaction product, the filtrate is the product.

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PUM

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Abstract

The invention provides a method of applying modified biodiesel as low sulfur diesel antiwear agent, comprising: adding modified biodiesel of 10- 2000ppm into low sulfur diesel, said modified biodiesel is produced through a 1-20 hour reaction with biodiesel and fatty alcohol or organic amine according to molar ratio of 1: 0.1- 5 at 50- 300 Deg. C . The biodiesel is the product of exchange between natural oil and fat and ester of low-carbon alcohol. By adding modified biodiesel into diesel with sulfur concentration lower than 500ppm can dramatically improve the lubricating property for low sulfur diesel.

Description

technical field [0001] The invention belongs to diesel antiwear agent, specifically an additive (also called lubricity additive) for improving the lubricity of low-sulfur diesel oil, so as to prevent diesel engines from burning fuel with poor lubricity and causing pump wear. technical background [0002] As countries around the world pay more and more attention to environmental protection issues, in order to reduce diesel exhaust pollution and produce high-quality clean diesel oil, it has become the development direction of the modern oil refining industry. This kind of diesel oil generally has the characteristics of low sulfur content, low aromatics content, high cetane number, and light distillate. Studies have shown that sulfur is the most harmful element that increases CH and CO in diesel engine emissions, especially inhalable particulate matter (PM), so reducing the sulfur content in diesel is particularly important for improving air pollution. Now the diesel specifica...

Claims

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Application Information

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IPC IPC(8): C10L1/22C10L10/08
Inventor 蔺建民黄燕民张永光李航李率
Owner CHINA PETROLEUM & CHEM CORP
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