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A kind of anti-corrosion and anti-wear anti-corrosion lubricant of high-concentration acid solution and preparation method thereof

A high-concentration, lubricant technology, applied in chemical instruments and methods, drilling compositions, organic chemistry, etc., can solve problems such as high cost, poor acid corrosion resistance, and environmental pollution, and achieve the effect of strong electron transfer characteristics

Inactive Publication Date: 2017-10-17
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Oil and gas pipelines and other equipment in oil and gas fields are mostly made of steel. These materials are generally poor in acid corrosion resistance. At present, it is still a technical problem in acid corrosion resistance at home and abroad. At the same time, there are many problems in the development of lubricants in oil and gas fields, or cost high, or pollute the environment

Method used

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  • A kind of anti-corrosion and anti-wear anti-corrosion lubricant of high-concentration acid solution and preparation method thereof
  • A kind of anti-corrosion and anti-wear anti-corrosion lubricant of high-concentration acid solution and preparation method thereof
  • A kind of anti-corrosion and anti-wear anti-corrosion lubricant of high-concentration acid solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The first step: 2-amino-5-phenylthiazole synthesis:

[0035] In a three-necked flask equipped with a thermometer, a stirrer and a spherical condenser, the molar ratio is n 硫脲 :n 酮 :n 碘 =1~1.5:1~1.2:1, add 5.7147g of thiourea, 5.2ml of acetophenone, 12.6359g of elemental iodine, then add 25ml of methanol to dissolve the raw materials, raise the temperature to 60~80°C and heat to reflux for 4h, while hot The reaction solution was poured into 20ml of hot water, stirred at constant temperature for 15 minutes, then suction filtered while it was hot to remove impurities generated in the reaction, the filtrate was extracted three times with anhydrous ether, and the aqueous layers were combined; then an appropriate amount of saturated sodium hydroxide solution was added thereto, Adjust its pH value to about 8, cool the solution to room temperature, a large number of light yellow solids precipitate, and obtain the crude product by suction filtration; the crude product is recry...

Embodiment 2

[0039] The first step: 2-amino-5-phenylthiazole synthesis:

[0040] In a three-necked flask equipped with a thermometer, a stirrer and a spherical condenser, the molar ratio is n 硫脲 :n 酮 :n 碘=1~1.5:1~1.2:1 ratio, add 5.7525g of thiourea, 5.2ml of acetophenone, 12.6417g of elemental iodine, then add 25ml of isopropanol to dissolve the raw materials, raise the temperature to 60~80°C and heat to reflux for 4h. Pour the reaction solution into 20ml of hot water, stir at constant temperature for 15 minutes, then filter while it is hot to remove impurities generated in the reaction, extract the filtrate three times with anhydrous ether, combine the water layer; then add an appropriate amount of saturated sodium hydroxide to it Solution, adjust its pH value to about 8, cool the solution to room temperature, a large amount of light yellow solid precipitates, and obtain the crude product by suction filtration; the crude product is recrystallized with absolute ethanol, the product is l...

Embodiment 3

[0044] The first step: 2-amino-5-phenylthiazole synthesis:

[0045] In a three-necked flask equipped with a thermometer, a stirrer and a spherical condenser, the molar ratio is n 硫脲 :n 酮 :n 碘 =1~1.5:1~1.2:1 ratio, add 5.7091g of thiourea, 5.2ml of acetophenone, 12.6544g of elemental iodine, then add 25ml of methanol to dissolve the raw materials, heat up to 60~80℃ and heat to reflux for 4h. The reaction solution was poured into 20ml of hot water, stirred at constant temperature for 15 minutes, then suction filtered while it was hot to remove impurities generated in the reaction, the filtrate was extracted three times with anhydrous ether, and the aqueous layers were combined; then an appropriate amount of saturated sodium hydroxide solution was added thereto, Adjust its pH value to about 8, cool the solution to room temperature, a large number of light yellow solids precipitate, and obtain the crude product by suction filtration; the crude product is recrystallized with abso...

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Abstract

The invention relates to a corrosion inhibition lubricating agent for resisting high-concentration acid liquid corrosion and abrasion and a preparation method of the corrosion inhibition lubricating agent, and belongs to the field of preparation of organic chemical industry. A corrosion inhibition lubricating agent product is prepared by synthesis of 2-amino-5-phenylthiazole-5-phenyl-2-amino(1-R1yl-2-R2yl-3-oxo n yl) thiazole-chlorinated ethoxyformyl-2-amino(1-R1yl-2-R2yl-3-oxo n yl)-5-phenyl thiazole ammonium. The corrosion inhibition lubricating agent contains a thiazole ring, a benzene ring, amido, carbonyl, ester group and the like; S, N and O atoms are electronegative atoms with relatively high activity; interactions, such as hydrogen bond and metal ion coordination, phi-phi accumulation, and electrostatic and hydrophobic action, of a plurality of non-covalent bonds are easily formed, and thus the metal surface is prevented from contacting the outside, so as to achieve corrosion and abrasion resistance, and the multi-purpose effect. The corrosion inhibition efficiency of the corrosion inhibition lubricating agent in a hydrochloric acid medium can be up to over 99%; and the reduction rate of the lubrication coefficient can be up to over 80%.

Description

technical field [0001] The invention relates to a high-concentration acid solution corrosion-resistant and anti-wear corrosion-inhibiting lubricant and a preparation method thereof, belonging to the field of organic chemical preparation. Background technique [0002] Corrosion protection and lubrication are research topics in two different fields. Oil and gas pipelines and other equipment in oil and gas fields are mostly made of steel. These materials are generally poor in acid corrosion resistance. At present, it is still a technical problem in acid corrosion resistance at home and abroad. At the same time, there are many problems in the development of lubricants in oil and gas fields, or cost high, or pollute the environment. Therefore, the research and development of a new type of corrosion-inhibiting lubricant with good corrosion-inhibiting lubrication effect and environmental protection is of great significance for the development of one agent for multiple purposes, re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035C09K8/74C07D277/42
CPCC07D277/42C09K8/035C09K2208/32C09K2208/34
Inventor 艾俊哲梅平
Owner YANGTZE UNIVERSITY
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