Dry gas seal of centrifugal pumps
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Can hydrogen be used as a substitute for dry gas in the dry gas seal of centrifugal pumps?
Nitrogen is generally used; if your medium is special, that can also be considered
Hydrogen is prone to field accidents, so nitrogen is generally used.
The sealing gas is industrial nitrogen or industrial instrument air, and the traditional \"liquid sealing\" principle is replaced by \"gas sealing\"; in other words, pressurized sealing gas is used in place of pressurized sealing fluid.
Nitrogen is generally used, and instrument air is usually not allowed either
Under no circumstances should this be done, because dry gas seals also achieve zero leakage of the medium by ensuring a continuous supply of sealing gas into it. Using hydrogen as the sealing gas would result in hydrogen entering the atmosphere, and when hydrogen comes into contact with air (oxygen) in certain proportions, an explosion can occur. Generally, dry gas seals use clean inert gases or air, with nitrogen being the most common choice due to its easy availability in industry. The situation described by the original poster cannot be considered typical, unless under extremely special circumstances