High-temperature and high-pressure dynamic electrochemical testing experimental device and testing method

Abstract

Provided is a high-temperature and high-pressure dynamic electrochemical testing device and testing method.A high-temperature and high-pressure reaction kettle comprises a high-pressure kettle body, a high-pressure kettle cover, a gas inlet pipe, a gas outlet pipe, a rotating shaft, a pressure sensor, a pressure meter, a temperature sensor, a heating device and a heat insulating layer; a three-electrode system comprises a reference electrode, a working electrode column, an auxiliary electrode column and a stabilizing device; an external control box is connected with the heating device and the rotating shaft, an external gas supply system is connected with the gas inlet pipe of the device, an external electrochemical workstation is connected with terminals of the auxiliary electrode, the reference electrode and the working electrode, and a computer is connected with the external electrochemical workstation.The high-temperature and high-pressure dynamic electrochemical testing device meets the requirements of the sealing property and high-temperature-resistance property of a testing environment, proves a high-temperature and high-pressure environment and can be used for research of dynamic high-temperature and high-pressure corrosion behaviors and mechanisms.

Description

Technical field [0001] The invention relates to an electrochemical test experimental device, in particular to a high-temperature and high-pressure dynamic electrochemical test experimental device and a test method. Background technique [0002] The damage or deterioration caused by the chemical or electrochemical interaction between the metal material and the surrounding environment (medium) is called corrosion. Metal corrosion is widespread in various fields of industrial and agricultural production and national defense construction, and the harm is very serious. High temperature and high pressure corrosion is a phenomenon that causes material failure due to electrochemical corrosion. For example, in the process of oil and gas development, associated gas often contains H 2 S and CO 2 , Causing various pipelines or structures to fail in the form of high temperature and high pressure corrosion. Carrying out high-temperature and high-pressure corrosion process simulation experimen...

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Problems solved by technology

The device is suitable for detecting in-situ electrochemical signals of metal material corrosion under dynamic conditions of high-temperature and high-pressure corrosive media, so as to conduct research on high-temperature and high-pressure dynamic corrosion behavior and mechanism, and solves the problem that the simulated solution cannot be tested under high-temperature and high-pressure conditions in the past. Problems with performing electrochemical signal measurements

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