How to prevent metal corrosion in glass lined reaction vessels

There are various anti-corrosion technologies for metals, mainly including improving the essence of the metal, surface treatment of the metal, improving the corrosive environment, and electrochemical protection.

1. Improving the Essence of Metals

Choosing different materials to form corrosion-resistant alloys based on different uses, or adding alloying elements to metals to improve their corrosion resistance, can prevent or slow down metal corrosion. For example, adding nickel to steel to make stainless steel can enhance its corrosion resistance.

2. Form a protective layer

Covering various protective layers on the metal surface to separate the protected metal from the corrosive medium is an effective method to prevent metal corrosion. There are two types of protective layers commonly used in the chemical industry: non-metallic protective layers and metallic protective layers.

3. Improving the environment

Improving the environment plays an important role in reducing and preventing metal corrosion. For example, reducing the concentration of corrosive media, removing oxygen from the media, and controlling environmental temperature, humidity, etc. can reduce and prevent metal corrosion. Adding substances (corrosion inhibitors) that can reduce the corrosion rate to the corrosive medium can also be used to reduce and prevent metal corrosion in the glass lined reaction vessel.

4. Electrochemical protection method

Electrochemical protection method is a method of preventing or reducing metal corrosion by taking measures on metal equipment based on electrochemical principles to become the negative plate in corrosive batteries.

Although metal corrosion brings great harm to chemical industry production, there are also corrosion processing technologies, such as electrochemical etching and new plasma etching technologies, that serve humanity.