The ammonia absorption issue in the ammonia-alkali process
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Will NH3 and CO2 vapors react to form NH4HCO3 before entering the heater? ? What causes scaling in pipes and condenser openings? ? NH3 + CO2 + H2O --> NH4HCO3 What temperature is required? What is the decomposition temperature of NH4HCO3?
Some NH4HCO3 is generated; scaling does occur. The decomposition temperature of NH4HCO3 is at least 200°C
How can one tell if there is scab blockage? ? How should it be handled? ? All are