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Oxygen heterocyclic carbon steel seawater corrosion inhibitor and application thereof

A kind of technology of corrosion inhibitor and oxygen heterocyclic ring, applied in the field of oxygen heterocyclic carbon steel seawater corrosion inhibitor

Inactive Publication Date: 2015-01-21
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current calculation method is to add energy consumption and labor costs in addition to raw materials. In fact, as environmental protection regulations become stricter, waste control and treatment, environmental monitoring and compliance, and liability compensation should also be added.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The corrosion solution is 3.5% NaCl simulated seawater, the amount of corrosion solution is 100 L, 20 g of fluorescein is added, and the carbon steel and its products are immersed in the corrosion solution for 20 days at 20 °C.

[0014] The highest corrosion inhibition efficiency obtained through experimental testing is 93%, showing that it is an efficient corrosion inhibitor.

Embodiment 2

[0016] The corrosion solution is 3.5% NaCl simulated seawater, the amount of corrosion solution is 100 L, 90 g of fluorescein is added, and the carbon steel and its products are immersed in the corrosion solution for 20 days at 20 °C.

[0017] The highest corrosion inhibition efficiency obtained through experimental testing is 98%, showing that it is an efficient corrosion inhibitor.

Embodiment 3

[0019] The corrosion solution is 3.5% NaCl simulated seawater, the amount of corrosion solution is 100 L, 70 g of fluorescein is added, and the carbon steel and its products are immersed in the corrosion solution for 25 days at 25 °C.

[0020] The highest corrosion inhibition efficiency obtained through experimental testing is 94%, which shows that it is an efficient corrosion inhibitor.

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PUM

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Abstract

The invention discloses an oxygen heterocyclic carbon steel seawater corrosion inhibitor for preventing unnecessary corrosion of carbon steel and a carbon steel product during the seawater utilization process and application of the oxygen heterocyclic carbon steel seawater corrosion inhibitor. The corrosion inhibitor is fluorescein; in a heterocyclic organic compound, the application of the corrosion inhibitor comprises the followings: corrosive liquid is 3.5% NaCl simulated seawater, 0.020-3.5 g / L corrosion inhibitor is added, the temperature is controlled to be 20-30 DEG C, the carbon steel and the carbon steel product are added, and immersion is performed for 20-30 days. The oxygen heterocyclic carbon steel seawater corrosion inhibitor is used for corrosion inhibition of the carbon steel and the carbon steel product in seawater, can prevent excessive corrosion of a metal during the seawater utilization process, and has the remarkable advantages of low using amount, high efficiency and high continuous acting capacity.

Description

technical field [0001] The invention relates to the technical field of corrosion inhibitor production, in particular to an oxygen-heterocyclic carbon steel seawater corrosion inhibitor for preventing unnecessary corrosion of carbon steel and its products in the seawater utilization process and its application. Background technique [0002] The effective and direct use of seawater plays a pivotal role in the shortage of freshwater resources in coastal cities and regions in my country. It will change the structure of water resources use and play a positive role in promoting the sustainable development of economy and society. my country's seawater utilization has a certain foundation, and the most widely used industries are electric power, petrochemical, chemical, etc. Thermal power plants and nuclear power plants directly use seawater as industrial cooling water to a certain scale, and power companies use seawater as cooling water, which accounts for about 10% of the national s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/12
Inventor 庞雪辉闫涛朱宝存王晓东马洪敏魏琴
Owner UNIV OF JINAN