Ammonium salt crystallization temperature in hydrogenation units
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I would like to ask for everyone’s advice: how is the ammonium salt crystallization temperature calculated for hydrofinishing units and high-pressure heat exchangers? Our high-pressure heat exchangers consistently experience very high pressure drops; we suspect that this is due to ammonium salt crystallization. Could someone please tell me how to calculate the ammonium salt crystallization temperature?
There are charts in Appendix A of API932b that can be viewed
The temperature can be checked; we also need to analyze which type of salt it is. Ammonium salts are easier to rinse off
We’ve reached the maximum allowable water injection volume, yet scaling remains severe. It seems that some of our coker diesel is being affected as well
Can you send me a copy? Thanks
The top cycle is equipped with a skid-mounted desalination system for the top cycle, which effectively resolves the salt deposition problem
The raw material contains a high level of chlorine; in some units, salt formation occurs earlier than usual, so water injection must begin right at the reactor outlet