What Is an Electrochemical Process?

Electrochemistry is the science that studies the phenomenon of charged interfaces formed by two types of conductors and the changes that occur on them. The interaction between electrical and chemical reactions can be accomplished through batteries, or it can be achieved by high-voltage electrostatic discharge (such as the conversion of oxygen into ozone through silent discharge tubes). The two are collectively referred to as electrochemistry, which is a branch of electrochemistry, called discharge chemistry. . Because of the special name for discharge chemistry, electrochemistry often refers specifically to the "science of batteries."

Electrochemistry has been widely used in chemical, metallurgy, machinery, electronics, aviation, aerospace, light industry, instrumentation, medicine, materials, energy, metal corrosion and protection, environmental science and other scientific and technological fields. At present, research topics that are of great concern in the world, such as energy, materials, environmental protection, life sciences, and so on, are related to electrochemistry in various ways.

In 1663, the German physicist Otto von Guericke created the first

The battery is composed of two electrodes and the electrolyte between the electrodes, so the research content of electrochemistry should include two aspects: one is the study of electrolytes, that is, the science of electrolytes, which includes the conductive properties of electrolytes, the transport properties of ions, and the ions involved in the reaction Equilibrium properties, etc., where

According to the principle of electrochemical corrosion, the metal

Electrochemical separation of metal ions in solution,

Chemical analysis methods based on the electrochemical properties of solutions. Electrochemical analysis was first introduced into the field of analysis by the German chemist C. Winkler in the 19th century. Instrumental analysis began in 1922

Among the many branches of physical chemistry, electrochemistry is the only discipline based on large industries. Its application is divided into the following aspects:

Oilfield oil-water separators are important equipment for separating gas (upper), crude oil (middle), and water (lower, accounting for half of the liquid level of the separator). However, the internal structure of the separator is complex, and the average water content of oil wells in the late stage of oilfield development is about 85%. Therefore, more than half of the bottom of the separator is in the separated sewage medium, and the corrosion problem is very serious.
In the past, the sacrificial anode cathodic protection method was generally used on the inner wall of the separator, but the temperature of the inner wall of the separator was high, the composition of the water deposited on the inner wall was complicated, and the water quality might be acidic or alkaline. Therefore, the sacrifice anode protection period is short, and it is generally consumed in less than six months. Sacrificial anode protection also has a dead end of protection. On the other hand, the protection potential of the sacrificial anode and cathode cannot be measured, the protection current cannot be adjusted, and the length of the protection period cannot be predicted.
Method for cathodic protection of external current of inner wall of oil-water separator. A titanium-based tubular mixed metal oxide anode was used as the auxiliary anode to fix it on a certain height bracket in the water phase at the bottom of the separator, and a silver / silver chloride reference electrode or a high-purity zinc reference electrode was used. The method is convenient to install, has a long service life (up to more than 10 years), uniform protection potential, and adjustable protection current output.