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Method for synthesizing mannich alkali steel inhibitor mother liquor and steel inhibitor mother liquor

A Mannich base and corrosion inhibitor technology, which is applied in the field of synthesizing Mannich base iron and steel corrosion inhibitor mother liquor, can solve the problems of high reaction cost and low production efficiency

Active Publication Date: 2008-04-09
新疆石油学院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, at present, all Mannich base corrosion inhibitors are synthesized in alcohol solution, which has high reaction cost and low production efficiency

Method used

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  • Method for synthesizing mannich alkali steel inhibitor mother liquor and steel inhibitor mother liquor
  • Method for synthesizing mannich alkali steel inhibitor mother liquor and steel inhibitor mother liquor
  • Method for synthesizing mannich alkali steel inhibitor mother liquor and steel inhibitor mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0064] 1. Preparation of corrosion inhibitor

[0065] In the three-necked flask, add the aldehydes, ketones and amines required for the reaction in molar proportions, then add a phase transfer catalyst of 1% (percentage by weight) of the reactant total amount, trimethylbenzyl ammonium chloride hydrochloride, add the reaction 20% hydrochloric acid or 20% sodium hydroxide solution of 5% (weight percent) of the total amount of the substance. Heating to reflux for three hours, after the reaction, take the oil layer respectively as the mother liquor, and prepare a 50% (weight percent) ethanol solution as the corrosion inhibitor.

[0066] 2. Corrosion inhibitor evaluation experiment

[0067] 2.1 Static weight loss method under normal pressure at 90°C

[0068] The corrosion inhibitor prepared above is added to the corresponding acid solution in an amount of 0.5% or 1.0% (percentage by weight) for use.

[0069] The material of the test piece is N80 steel, and it is polished with a ...

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Abstract

The invention provides a method of synthesizing mannich base steer corrosion inhibitor mother solution and the mannich base steer corrosion inhibitor mother solution prepared by the method. The method includes that aqueous solution medium is adopted to carry out the following reactions, and the meaning of each symbol is stated in the instruction.

Description

technical field [0001] The invention relates to a method for synthesizing Mannich base iron and steel corrosion inhibitor mother liquor and the iron and steel corrosion inhibitor mother liquor, more specifically, the present invention relates to a method for synthesizing Mannich base iron and steel corrosion inhibitor mother liquor using an aqueous system and A steel corrosion inhibitor mother liquor thus obtained. Background technique [0002] The acidizing process in oil and gas fields is an important measure to increase the production of crude oil and natural gas. The usual method of acidizing oil and gas wells is to press 15%-28% hydrochloric acid as a solution into the oil and gas wells, so as to open the void channels near the oil and gas reservoirs and increase the flow of crude oil or natural gas. In order to reduce the chemical corrosion of the oil pipe and casing materials by acid, it is necessary to add corrosion inhibitors to the acid solution during the acidizi...

Claims

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Application Information

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IPC IPC(8): C23F11/04C09K8/54E21B43/27
Inventor 高建村冯丽翁永基
Owner 新疆石油学院