Improver for lubricating performance of low-sulfur diesel oil and preparation process thereof

A lubricating performance, low-sulfur diesel technology, applied in the field of diesel anti-wear agents, can solve problems such as high viscosity, inconvenient practical application, and poor use effect

Inactive Publication Date: 2010-07-28
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
View PDF9 Cites 18 Cited by
  • 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.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Improver for lubricating performance of low-sulfur diesel oil and preparation process thereof
  • Improver for lubricating performance of low-sulfur diesel oil and preparation process thereof
  • Improver for lubricating performance of low-sulfur diesel oil and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation process of the low-sulfur diesel lubricity improver comprises the following steps:

[0025] (1) Synthesis of a mixture of monoglycerides and diglycerides: take natural oils and alcohols with a molar ratio of 1:1 to 2, and place them together with an inorganic alkali catalyst in a container equipped with an electric stirrer, a thermometer, and a reflux condenser. In the reactor, heat and stir to raise the temperature to 50-200°C and react for 1-20 hours to realize incomplete transesterification reaction. After cooling to room temperature and settling for 2-8 hours, a small amount of by-products settled at the bottom is separated by phase separation. The product glycerol and the regenerated catalyst can be recovered to obtain a mixture of monoglycerides and diglycerides. The reaction formula is as follows:

[0026]

[0027] It is compounded with dimer acid at a weight ratio of 1:0.2-0.8 to obtain a low-sulfur diesel lubricating performance improver.

...

Embodiment 1

[0038] A low-sulfur diesel lubricity improver, consisting of the following components: (A) a mixture of monoglycerides and diglycerides; (B) dimer acid; characterized in that: component (A) monoglycerides and diglycerides The weight ratio of ester mixture to component (B) dimer acid was 1:0.33.

[0039] A preparation process of a low-sulfur diesel lubricity improver, characterized in that: the preparation process comprises the following steps:

[0040] (1) Synthesis of a mixture of monoglycerides and diglycerides: take 182g (0.214mol) of soybean oil (average molecular weight: 850) and 23.8mL ethylene glycol (0.427mol) with a molar ratio of about 1:2, and 0.5g K 2 CO 3 Put them together in a reactor equipped with an electric stirrer, a thermometer, and a reflux condenser, heat and stir to raise the temperature to 150°C, react for 2 hours, cool to room temperature, settle for 5 hours, and separate out the bottom by phase separation. A small amount of by-product glycerin and c...

Embodiment 2

[0044] A low-sulfur diesel lubricity improver, consisting of the following components: (A) a mixture of monoglycerides and diglycerides; (B) dimer acid; characterized in that: component (A) monoglycerides and diglycerides The weight ratio of ester mixture to component (B) dimer acid was 1:0.43.

[0045] A preparation process of a low-sulfur diesel lubricity improver, characterized in that: the preparation process comprises the following steps:

[0046] (1) Synthesis of a mixture of monoglycerides and diglycerides: get 193g (0.214mol) of peanut oil (average molecular weight is 900) and 32.47g 1,3-propanediol (0.427mol) with a molar ratio of about 1:2, and 0.5 g Na 2 CO 3 Put them together in a reactor equipped with an electric stirrer, a thermometer, and a reflux condenser, heat and stir to raise the temperature to 150°C, react for 2 hours, cool to room temperature, settle for 5 hours, and separate out the bottom by phase separation. A small amount of by-product glycerin and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
acid valueaaaaaaaaaa
Login to view more

Abstract

The invention relates to an addictive formed by compounding a glycerol single-double ester mixture and dimeric dibasic acid and used for improving the lubricating performance of low-sulfur diesel oil and preventing the wear of a pump, caused by combusting a fuel with poor lubricating performance through a diesel engine. The glycerol single-double ester is synthesized by catalyzing natural grease to react with alcohol compounds by taking inorganic base as a catalyst; and the glycerol single-double ester and a dual-ester mixer are compounded with the dimeric dibasic acid to obtain a series performance improver which has a favorable synergistic effect for improving the lubricating performance of low-sulfur diesel oil. Under the condition that the addition is 125-250mug.g<-1>, the improver has the effect which is remarkably superior to that of an imported agent for improving the lubricating performance of the low-sulfur diesel oil and hardly influences the oxidation stability and the low-temperature flowability of diesel oil. Meanwhile, the improver has no counteraction on a diesel oil stabilizer and a diesel oil flowing improver.

Description

Technical field: [0001] The invention belongs to the field of diesel antiwear agents, in particular to a kind of modified grease as an additive to improve low-sulfur diesel oil lubricants, 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 United St...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C10L10/08C10L1/19C10L1/188C10L1/04
Inventor 臧树良姜恒柏永全赵杉林
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap