Mannich base metal iodide corrosion inhibitor and preparation method thereof

Abstract

The invention discloses a Mannich base metal iodide corrosion inhibitor and a preparation method thereof. The Mannich base metal iodide corrosion inhibitor comprises components of the following mass percentage: 15 to 30 percent of the metal iodide of a condensate of ketone, aldehyde and amine, and 70 to 85 percent of complex, wherein the complex is made up of following materials with mass percentof: 5 to 15 percent of cetylpyridinium chloride, 5 to 20 percent of emulsifier, and 65 to 80 percent of solvent. The metal iodide of a condensate of ketone, aldehyde and amine can be obtained by reaction of the metal iodide and the condensate of ketone, aldehyde and amine synthesized with 1-naphthy lamine, paraformaldehyde, and ethyl phenyl ketone. The problem that other corrosion inhibitors can be easily decomposed at high temperature can be solved, the inconvenience in production caused by toxic material can be reduced, acidification and corrosion of hydrochloric acid at high temperature can be inhibited, the problem of corrosion by strong acid during the acidification fracturing of petroleum exploitation can be solved, and the goal of protecting oil pipes can be achieved.

Description

technical field [0001] The invention belongs to the technical field of petroleum refining, and in particular relates to the corrosion inhibitor technology of the refining process. Background technique [0002] The research on high-temperature acidification corrosion inhibitors in my country started relatively late, and it was not gradually developed until the mid-to-late 1970s. However, research and application have improved rapidly. After the mid-1980s, various acidification corrosion inhibitors have been developed and produced successively. , to solve the production needs of some oil fields. Mannich base has been used as an acidifying corrosion inhibitor on a certain scale and has been well applied. For example, the 7801 corrosion inhibitor developed by Huazhong University of Science and Technology is a compound of Mannich base and propynyl alcohol formed by the reaction of aniline, acetophenone, and urotropine. <80g / (m 2 h); the Chuantian 1-2 corrosion inhibitor deve...

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Problems solved by technology

[0004] Aiming at the deficiencies in the above prior art, the purpose of the present invention is to provide an acidification corrosion inhibitor that inhibits high-temperature hydrochloric acid corrosion to solve the problem of strong acid corrosion in the acidification and fracturing process of oil exploitation in my country, so as to achieve the protection of oil pipes. Purpose

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