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Gemini type bimolecular Sciff base waste water corrosion inhibitor and preparation method thereof

A Schiff base and bimolecular technology, applied in chemical instruments and methods, preparation of organic compounds, water/sludge/sewage treatment, etc., can solve problems such as complex synthesis process, easy hydrolysis of imidazoline, and influence on anti-corrosion effect, etc. Achieve the effect of high corrosion inhibition efficiency, less environmental pollution, simple and fast production

Active Publication Date: 2014-11-19
XI'AN PETROLEUM UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its shortcomings are also very obvious. On the one hand, the synthesis process is complicated, and the loss of raw material solvents is serious;

Method used

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  • Gemini type bimolecular Sciff base waste water corrosion inhibitor and preparation method thereof
  • Gemini type bimolecular Sciff base waste water corrosion inhibitor and preparation method thereof
  • Gemini type bimolecular Sciff base waste water corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of Gemini type bimolecular Schiff base sewage corrosion inhibitor comprises following components, by weight percentage:

[0026] Schiff base 20%;

[0027] Benzotriazole 9%;

[0028] Thioglycolic acid 5%;

[0029] Octylphenol polyoxyethylene ether (OP-10) 3%;

[0030] Solvent 63%;

Embodiment 2

[0032] A kind of Gemini type bimolecular Schiff base sewage corrosion inhibitor comprises following components, by weight percentage:

[0033] Schiff base 10%;

[0034] Benzotriazole 6%;

[0035] Thioglycolic acid 2%;

[0036] Tween 80 1%;

[0037] Solvent 81%;

Embodiment 3

[0039] A kind of Gemini type bimolecular Schiff base sewage corrosion inhibitor comprises following components, by weight percentage:

[0040] Schiff base 16%;

[0041] Benzotriazole 8%;

[0042] Thioglycolic acid 4%;

[0043] Tween 80 2%;

[0044] Ethylene glycol 70%;

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Abstract

The invention relates to a Gemini type bimolecular Sciff base waste water corrosion inhibitor. The corrosion inhibitor is characterized by comprising the following components by weight percent: 10-20 percent of Sciff base, 6-9 percent of benzotriazol, 2-5 percent of thioglycollic acid, 1-3 percent of surface active agent and 63-81 percent of solvent. A method for preparing the Gemini type bimolecular Sciff base waste water corrosion inhibitor comprises the following steps: (1) a bimolecular Sciff base compound 1,5-bi(hydroxybenzhydrazide)-pentane is synthesized from the raw materials of salicylyl hydrazine and glutaric dialdehyde; and (2) the bimolecular Sciff base compound 1,5-bi(hydroxybenzhydrazide)-pentane prepared in the step (1) is compounded to obtain the corrosion inhibitor according to the weight percent: 10-20 percent of Sciff base compounds and 80-90 percent of compounds. The corrosion inhibitor can restrain the corrosion of waste water media, and guarantees the safe operation of water injection pipelines during production.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a Gemini bimolecular Schiff base sewage corrosion inhibitor and a preparation method thereof. Background technique [0002] China's continental oil reservoirs have serious heterogeneity, and most of them are exploited by water flooding. During the production process, extremely rich water injection dynamic monitoring data have been obtained, and various laboratory and field tests have been carried out at the same time. A large amount of comprehensive research work has been carried out, and a relatively clear and profound understanding of the characteristics of reservoir water injection development has been obtained. Compared with other displacing agents, water has the characteristics of low price, sufficient supply and high oil displacement effect. Therefore, most oilfields regard waterflood development as the preferred way to develop oilfields. However, with the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/16C07C251/20C07C241/00C02F5/12
Inventor 吕祥鸿赵国仙南叶飞张钧
Owner XI'AN PETROLEUM UNIVERSITY
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