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Hydrogen Corrosive in Chemical Engineering
"On Hydrogen Corrosion in Chemical Industry"
In the chemical industry, the danger of hydrogen corrosion cannot be ignored. Although hydrogen is the lightest element, in the chemical environment, its corrosive power is often invisible, causing serious trouble.
Hydrogen corrosion is not achieved overnight. In chemical processes, such as high-temperature and high-pressure reactors, or acid-base erosion pipes, hydrogen atoms or ions can often penetrate into the material lattice. At first, the appearance of the material is not very different, but the internal lattice has quietly distorted.
Its corrosion mechanism is quite complex. When hydrogen atoms encounter metals, they often adsorb on the surface and then dissociate into protons and electrons. With its tiny size, protons easily penetrate the surface protective layer of the material and penetrate into the interior. In the lattice gap, protons may chemically react with metal atoms to form hydrides, causing material embrittlement; or aggregate to form hydrogen molecules, which accumulate at lattice defects, generating internal stress and eventually causing material cracking.
Looking at chemical accidents, it is not uncommon for pipelines to break and equipment to be damaged due to hydrogen corrosion. This not only endangers production safety, but also concerns the safety of personnel and the environment. Therefore, chemical practitioners should study the laws of hydrogen corrosion in detail and the methods of protection.
To prevent hydrogen corrosion, the choice of materials should bear the brunt. Select the ones with excellent resistance to hydrogen corrosion, such as special alloy steel, which has a dense structure and can effectively block the infiltration of hydrogen. And surface treatment is also indispensable. Coating protection can isolate the contact between hydrogen and the surface of the material and delay the corrosion process.
Furthermore, the control of process parameters is crucial. Reasonable regulation of temperature and pressure to avoid excessive, in order to reduce the activity of hydrogen and reduce the corrosion rate. Daily inspection should not be slack. It is necessary to check the slight changes of equipment, detect hidden dangers early, and repair them in time.
The rise of chemical industry, the wide application of hydrogen, but the risk of hydrogen corrosion, like a shadow. Only by being well-informed and following protective measures can we ensure the stability of chemical production and promote the prosperity of the industry.
In the chemical industry, the danger of hydrogen corrosion cannot be ignored. Although hydrogen is the lightest element, in the chemical environment, its corrosive power is often invisible, causing serious trouble.
Hydrogen corrosion is not achieved overnight. In chemical processes, such as high-temperature and high-pressure reactors, or acid-base erosion pipes, hydrogen atoms or ions can often penetrate into the material lattice. At first, the appearance of the material is not very different, but the internal lattice has quietly distorted.
Its corrosion mechanism is quite complex. When hydrogen atoms encounter metals, they often adsorb on the surface and then dissociate into protons and electrons. With its tiny size, protons easily penetrate the surface protective layer of the material and penetrate into the interior. In the lattice gap, protons may chemically react with metal atoms to form hydrides, causing material embrittlement; or aggregate to form hydrogen molecules, which accumulate at lattice defects, generating internal stress and eventually causing material cracking.
Looking at chemical accidents, it is not uncommon for pipelines to break and equipment to be damaged due to hydrogen corrosion. This not only endangers production safety, but also concerns the safety of personnel and the environment. Therefore, chemical practitioners should study the laws of hydrogen corrosion in detail and the methods of protection.
To prevent hydrogen corrosion, the choice of materials should bear the brunt. Select the ones with excellent resistance to hydrogen corrosion, such as special alloy steel, which has a dense structure and can effectively block the infiltration of hydrogen. And surface treatment is also indispensable. Coating protection can isolate the contact between hydrogen and the surface of the material and delay the corrosion process.
Furthermore, the control of process parameters is crucial. Reasonable regulation of temperature and pressure to avoid excessive, in order to reduce the activity of hydrogen and reduce the corrosion rate. Daily inspection should not be slack. It is necessary to check the slight changes of equipment, detect hidden dangers early, and repair them in time.
The rise of chemical industry, the wide application of hydrogen, but the risk of hydrogen corrosion, like a shadow. Only by being well-informed and following protective measures can we ensure the stability of chemical production and promote the prosperity of the industry.
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