Principles of utilizing reaction heat
Thread Content
For a reaction with a temperature of 245 degrees that aims to utilize the heat generated by the reaction, what medium should be used for heat exchange if steam is to be produced? Saturated water? I’ve seen some literature suggesting the use of steam to generate high-pressure steam? Don’t understand
The literature mentions heat exchange using a high-pressure drum; the pressure in such a drum is much higher than the reaction pressure. Is this acceptable?
Steam is generally generated using a steam drum! Select the appropriate medium based on pressure and temperature
It’s not enough to only know the temperature; it’s necessary to know the extent of your reaction load and how much heat is generated in order to consider its use. The steam bag should work, right?
To be precise, the reaction heat is removed through a waste heat exchanger, where it vaporizes in the steam drum; based on the recommended reaction temperature, the steam pressure should not exceed 1.5 MPa
It’s not heat removal through steam vaporization to control the temperature; at 245 degrees, the saturated steam pressure of water is around 3.5 MPa
The temperature of saturated steam at 1.0 Mpa should be 250°C; it’s unlikely that a higher temperature can be achieved. It is recommended to consider using steam at 0.4 Mpa
Steam is generated using a steam drum; the pressure in this drum is determined based on the heat exchange temperature. The temperature of our synthesis reaction bed is 240–260°C, with a steam drum pressure of 3.9 Mpa, resulting in steam at 250°C. What you mean in the literature is to use saturated steam as the medium to produce superheated steam; a temperature of 245°C should not work, as it’s too low. Ammonia synthesis can be carried out at such temperatures, with an exit temperature of over 360°C.