System airtightness
Thread Content
In a hydrogenation unit, why is a hydrogen leak test conducted after the nitrogen leak test has been done?
This post was last edited by ylb913 on 2015-9-19 at 11:28. Can the pressure of nitrogen meet the requirements? Hydrogen is airtight; your facility is equipped with a hydrogen compressor for use during normal production. I also didn’t understand before why a hydrogen compressor couldn’t compress nitrogen It was only later that I found out their molecular weights differed by too much, so this hydrogen compressor couldn’t be used.
First, the nitrogen pressure does not reach the desired final pressure; second, hydrogen molecules are small, and using hydrogen for airtightness is the most suitable choice for operating conditions.