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Antioxidant Corrosion Inhibitor

An anti-oxidation corrosion inhibitor and catalyst technology, which is applied in the field of anti-oxidation corrosion inhibitors, can solve the problems of accelerated local pitting corrosion, high cost, large amount of anti-oxidation corrosion inhibitors, etc., to achieve corrosion prevention, good compatibility, excellent The effect of high temperature oxidation resistance

Active Publication Date: 2021-06-22
上海贵通新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional anti-oxidant corrosion inhibitors are used in a large amount and cost high, and when the amount is lower than the critical concentration, local pitting corrosion will be accelerated

Method used

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  • Antioxidant Corrosion Inhibitor
  • Antioxidant Corrosion Inhibitor
  • Antioxidant Corrosion Inhibitor

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Antioxidant corrosion inhibitor is prepared by the following method:

[0021] Put dicyandiamine, activated alumina, sulfonic acid, and zeolite into the reaction kettle, stir, heat up to 120°C, add dichloropropane at a rate of 10mL / min, stir, heat up to 140°C, keep warm for 2 hours, and heat up to 180°C, keep warm for 1h, heat up to 200°C, then pass inert gas to 1MPa, keep warm and pressurized for 1h, discharge inert gas, return the pressure to atmospheric pressure, cool to below 50°C, and obtain intermediates, among which dicyandi The molar ratio of amine to dichloropropane is 1:1.2;

[0022] Gelatinize starch at 70°C, cool to room temperature, add acrylamide, continuously add ammonium sulfate-sodium bisulfite during stirring, carry out redox reaction, cool, add ethanol for precipitation, take the precipitate, and dry it in vacuum at 50°C to obtain powder body, redissolve the powder in acetone, extract, take the extract, and dry it in vacuum at 50°C to obtain a copolym...

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Abstract

The invention discloses an anti-oxidation and corrosion inhibitor, which is prepared by the following method: put dicyandiamine, catalyst and zeolite into a reaction kettle, add dichloropropane to obtain an intermediate; gelatinize starch, add acrylamide, Continuously add the initiator during the stirring process to obtain the copolymer; put the intermediate, copolymer, benzotriazole, sulfide, and silicate into the reaction kettle in sequence, stir, and cool to room temperature to obtain the product. The invention can form a dense and firm protective film on the surface of oil and gas equipment and gathering and transportation pipelines in humid and high temperature environment, effectively prevents the erosion of oil and gas equipment and gathering and transportation pipelines by sewage medium, and has excellent high temperature and oxygen resistance performance.

Description

technical field [0001] The invention relates to the technical field of petroleum processing. More specifically, the present invention relates to an anti-oxidation corrosion inhibitor. Background technique [0002] After the oilfield enters the high water cut period, the dissolved oxygen contained in the oilfield sewage will often form electrochemical corrosion or microbial corrosion on oil and gas equipment and pipelines, resulting in continuous corrosion and perforation in the sewage system. Usually very low concentration of oxygen (less than 1mg / L) can cause extremely serious corrosion. If HCO is present in the sewage medium 3 - or CO 2 Oxygen will increase their corrosiveness sharply, causing corrosion of oil and gas equipment and pipelines, and even corrosion and fracture of oil pipes, shortening the service life of oil and gas wells and causing huge economic losses. [0003] At present, there are many measures for oxygen corrosion of oil and gas equipment and pipel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/08
CPCC23F11/08
Inventor 徐文忠
Owner 上海贵通新材料科技有限公司