Discussion on salt formation of NH4HS and NH4CL
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Please discuss this. The guidelines for hydrogen production state that the salt formation temperature for NH4HS is 121°C, while for NH4Cl it is 176°C–232°C. So, will NH4HS form salts at temperatures lower or higher than 121°C? And will NH4Cl continue to form salts at temperatures below 176°C or above 232°C? A detailed explanation of the process would be appreciated
Below this temperature, salt crystallization occurs; the solubility is related to both temperature and pressure – lower pressure and higher temperature result in higher solubility. Under specific industrial and mining conditions, the design pressure and temperature are usually fixed, so pressure has a minor impact. As for temperature, higher temperatures lead to greater solubility and make salt crystallization less likely. Another factor is the amount of water injected; the problem of salt crystallization persists, and water injection is needed to dissolve it! It is not scheduled to switch to the high-pressure heat exchanger for a flushing period at regular intervals! Under normal operating conditions, water injection precedes air cooling!