High-temperature acidizing corrosion inhibitor as well as preparation method and application thereof
A technology for acidizing corrosion inhibitors and corrosion inhibitors, which can be used in chemical instruments and methods, earth-moving drilling and production, wellbore/well components, etc. Excellent corrosion performance, extended service life, and no pollutant emissions.
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Embodiment 1
[0039] Example 1: methanol 50, acetone 20, paraformaldehyde 13, heteroaniline 12, hydrochloric acid 5, compounding agent propynyl alcohol 12.
Embodiment 2
[0040] Example 2. Ethanol 55, aliphatic ketone 15, benzaldehyde 10, cyclohexylamine 5, oleic acid 5, compounding agent propynyl alcohol 10.
[0041] two. Preparation method embodiment of high temperature acidification corrosion inhibitor
[0042] It is divided into two parts: the preparation of the parent corrosion inhibitor and the preparation of the finished corrosion inhibitor. Synthesize the matrix corrosion inhibitor first, and then compound to obtain the finished high-temperature acidification corrosion inhibitor. The operation is as follows:
[0043] Example 1
[0044] 1. Preparation of parent corrosion inhibitor:
[0045] step one:
[0046] According to the parts by weight, take 50 parts of methanol, 20 parts of acetone, 13 parts of paraformaldehyde, 12 parts of aniline, and 5 parts of hydrochloric acid into the reaction kettle in turn, react at 95°C for 5-7 hours, and keep warm for 4 hours to obtain the matrix Corrosion inhibitor.
[0047] 2. Preparation of fini...
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