What type of steam is used for dissolving NH4NO3 and for maintaining temperature – low pressure or medium pressure? ?
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What temperatures and pressures of steam are required for actual dissolution and heat retention, respectively? :victory:
When choosing the steam, you first need to determine the concentration of your ammonium solution; this will allow you to know the crystallization temperature. Based on that temperature, you can then select the appropriate steam. In any case, the steam temperature should be higher than the crystallization temperature. If using a high-pressure tower, it’s best to opt for steam with a temperature of around 200 degrees and a pressure of 1.3
The characteristic of NH4NO3 is that it dissolves upon contact with water. Therefore, both dissolution and heat retention can use 0.6MPa steam.
Generally, saturated steam at 0.8 MPa and a temperature between 170–180 degrees is used. If steam with a higher pressure level is used, and the temperature of the steam exceeds 200 degrees due to overheating, there is a risk of decomposition and explosion of *ao acid an.
I agree with what was said on floor 2; if AN at a concentration of less than 95% can be used, then 150-degree saturated steam will suffice
Reply to 5# nobelguo: It is recommended to use 1.2MPa steam