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Auxiliary anode and preparation method and application thereof

A technology of auxiliary anode and coating solution, applied in the field of auxiliary anode and its preparation, can solve the problems of easy deterioration of auxiliary anode performance, reduced gas evolution activity, poor stability, etc., so as to improve electrochemical performance, reduce dosage, and reduce cracks. The effect of size and quantity

Pending Publication Date: 2022-04-19
GUANGDONG ZHANJIANG PROVINCIAL LAB OF SOUTHERN MARINE SCI & ENG
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  • Description
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Problems solved by technology

[0003] Oil slick production, oil storage and unloading devices and seawater pipelines on platforms need to be used in complex and harsh environments. Impressed current cathodic protection technology can achieve good results, but the commonly used auxiliary anodes are prone to performance degradation (Example: reduced gas evolution activity, poor stability), shorter service life

Method used

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  • Auxiliary anode and preparation method and application thereof
  • Auxiliary anode and preparation method and application thereof
  • Auxiliary anode and preparation method and application thereof

Examples

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Embodiment 1

[0090] The preparation method of the auxiliary anode of embodiment 1, concrete preparation process is:

[0091] 1) Substrate pretreatment: Use a sandblasting machine to perform all-round surface peeling treatment on the titanium substrate (titanium plate) of 2cm×2cm×0.2cm to remove the oxide skin on the surface until the titanium substrate reveals a metallic luster, and use a flow deionization Wash with water; then put the titanium substrate into the lye solution, and heat it at 100°C for a certain period of time to remove the oil on the surface of the titanium substrate; then put the titanium substrate into the alkaline solution and heat it at 100°C for 2 hours for acid etching; After the acid-etched titanium substrate was washed alternately with deionized water and absolute ethanol for 3 times, a rough titanium substrate with a pitted surface was obtained, and the pretreated titanium substrate was dried and stored in absolute ethanol;

[0092] 2) Preparation of anode coating...

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Abstract

The invention discloses an auxiliary anode and a preparation method and application thereof. The auxiliary anode provided by the invention contains a unit coating structure of coating A-coating B, further has the advantages of heat resistance, conductivity, good electrochemical performance and long service life, and is suitable for a cathode protection system arranged in a floating production oil storage and discharge device and a seawater pipeline on a platform. The preparation method of the auxiliary anode comprises the following steps: 1) preparing a coating solution A containing carboxylated graphene, an iridium compound and a tantalum compound, and preparing a coating solution B containing carboxylated graphene; and (2) the surface of a metal matrix is coated with the coating liquid A to form a coating A, then the surface of the coating A is coated with the coating liquid B to form a coating B, sintering is conducted in the protective atmosphere, and the auxiliary anode is obtained. The preparation method has the advantages of simplicity, low cost and controllable loading capacity, and is suitable for popularization and practical application.

Description

technical field [0001] The invention relates to the technical field of impressed current cathodic protection, in particular to an auxiliary anode and its preparation method and application. Background technique [0002] Impressed current cathodic protection is to turn the protected object into a cathode by energizing, thereby slowing down and avoiding corrosion. It has the advantages of high effectiveness, good anti-corrosion flexibility, long anti-corrosion timeliness and good visibility of anti-corrosion effect. It is expected to be applied in Oil slick production storage offloading unit and seawater pipeline on platform. Auxiliary anode is one of the keys of impressed current cathodic protection technology, and its performance directly determines the performance and service life of the cathodic protection system. [0003] Oil slick production, oil storage and unloading devices and seawater pipelines on platforms need to be used in complex and harsh environments. Impresse...

Claims

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Application Information

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IPC IPC(8): C23F13/08C23F13/16
CPCC23F13/08C23F13/16C23F2213/32
Inventor 曾庆杨汪建明鲁国强黄锦圳赵彩玲刘洒文李欣
Owner GUANGDONG ZHANJIANG PROVINCIAL LAB OF SOUTHERN MARINE SCI & ENG
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