Unlock instant, AI-driven research and patent intelligence for your innovation.

Corrosion inhibition lubricant for alcohol-based clean fuel oil and preparation method for corrosion inhibition lubricant

A lubricant and cleaning technology, which is applied in the direction of lubricating compositions, fuels, additives, etc., can solve problems such as high polarity, and achieve the effects of simple method, good corrosion inhibition, and reduced friction coefficient

Active Publication Date: 2020-02-21
XI'AN PETROLEUM UNIVERSITY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 2-Hydroxybenzimidazole has three heteroatoms and has strong adsorption capacity. It can be strongly adsorbed on the metal surface to form a protective film and play a role in corrosion inhibition. However, it has a high polarity and has a high It is difficult to dissolve in gasoline and diesel, so it is difficult to be directly used as gasoline and diesel additives

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
  • Corrosion inhibition lubricant for alcohol-based clean fuel oil and preparation method for corrosion inhibition lubricant
  • Corrosion inhibition lubricant for alcohol-based clean fuel oil and preparation method for corrosion inhibition lubricant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method for an alcohol-based clean fuel oil corrosion inhibiting lubricant, comprising the following steps:

[0021] In the first step, 2-hydroxybenzimidazole is dispersed in ethanol with 20 times its mass in the reactor, and the 2-hydroxybenzimidazole and ethanol are chemically pure products;

[0022] In the second step, under stirring, adding into the above-mentioned reaction kettle with the amount ratio of 2-hydroxybenzimidazole substance is a base A of 1:1, and the base A is chemically pure potassium hydroxide;

[0023] The 3rd step, in above-mentioned reactor, add and 2-hydroxybenzimidazole substance molar ratio be the dihalogenated alkyl of 1:2 and account for the potassium iodide of 1% of the amount of 2-hydroxybenzimidazole substance, described dihalogenated alkane is chemical Pure 1,2-dichloroethane, the chemically pure product of said potassium iodide;

[0024] The fourth step is to heat the solution in the reactor to 78°C under stirring, and rea...

Embodiment 2

[0032] A preparation method for an alcohol-based clean fuel oil corrosion inhibiting lubricant, comprising the following steps:

[0033] In the first step, 2-hydroxybenzimidazole is dispersed in methanol of 18 times its mass in the reactor, and the 2-hydroxybenzimidazole and methanol are analytically pure products;

[0034] In the second step, under stirring, adding to the above-mentioned reactor with the molar ratio of 2-hydroxybenzimidazole substance is the base A of 1:1.1, and the base A is analytically pure sodium hydroxide;

[0035] The 3rd step, add and 2-hydroxybenzimidazole substance molar ratio to be 1:2 dihaloalkane and the potassium iodide accounting for 2% of the amount of 2-hydroxybenzimidazole substance in above-mentioned reactor, described dihaloalkane is Analytical pure 1,3-dichloroethane, the potassium iodide is analytically pure product;

[0036] The fourth step is to heat the solution in the reactor to 65°C under stirring, and react for 3 hours;

[0037] T...

Embodiment 3

[0044] A preparation method for an alcohol-based clean fuel oil corrosion inhibiting lubricant, comprising the following steps:

[0045] In the first step, 2-hydroxybenzimidazole is dispersed in ethanol with 15 times its mass in the reactor, and the 2-hydroxybenzimidazole and ethanol are analytically pure products;

[0046] In the second step, under stirring, adding to the above-mentioned reactor with the molar ratio of the 2-hydroxybenzimidazole substance is a base A of 1:1, and the base A is analytically pure potassium hydroxide;

[0047] The 3rd step, in above-mentioned reactor, add the potassium iodide that is 1:2.1 dihaloalkane and account for the amount of 2-hydroxybenzimidazole material 3% with the amount ratio of 2-hydroxybenzimidazole material, described dihaloalkane is analysis Pure 1,2-dibromoethane, the potassium iodide is an analytically pure product;

[0048] The fourth step is to heat the solution in the reactor to 70°C under stirring, and react for 3 hours;

...

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

No PUM Login to View More

Abstract

The invention discloses a corrosion inhibition lubricant for alcohol-based clean fuel oil and a preparation method for the corrosion inhibition lubricant. The preparation method comprises the following steps: dispersing 2-hydroxybenzimidazole into methanol or ethanol, adding alkali under stirring, then adding dihaloalkane and potassium iodide, and carrying out a reaction under heating; and carrying out cooling to a room temperature, adding the alkali, then adding long-chain alkyl halide, carrying out a reaction under heating, carrying out cooling to a room temperature, and carrying out filtering to remove insoluble substances so as to obtain the corrosion inhibition lubricant used for methanol / ethanol gasoline and diesel oil. According to the invention, at a use temperature, when the usageamount of the prepared corrosion inhibition lubricant is 10 to 500 mg / L, the corrosion inhibition rate of the corrosion inhibition lubricant to a copper sheet is 90% or above, and the friction coefficient is reduced by 30% or above. The method provided by the invention is simple and convenient; a product can be used as an additive without the need of purification; and the product has good corrosion inhibition effect.

Description

technical field [0001] The invention relates to the technical field of additives for clean fuel, in particular to an alcohol-based corrosion-inhibiting lubricant for clean fuel and a preparation method thereof. Background technique [0002] With the proposal of energy conservation, environmental protection and low-carbon economy, alternative fuels for vehicles have received widespread attention. At present, in addition to gasoline and diesel produced by traditional petroleum refining, gasoline and diesel mixed with methanol / ethanol have also been put on the market. The properties of methanol and ethanol are similar to gasoline in many aspects, so it is considered that in internal combustion engines, especially spark ignition engines, they are the most promising new energy sources to replace gasoline. At present, Shanxi, Henan and other provinces and cities in my country have promoted the use of methanol gasoline or ethanol gasoline. However, there are corrosion problems in...

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): C07D235/26C10M133/46C10L1/232C10N30/06C10N30/12
CPCC07D235/26C10M133/46C10L1/232C10M2215/224
Inventor 汤颖杨颖周瑞马超王进
Owner XI'AN PETROLEUM UNIVERSITY