Calculation of the gasification shift gas tower

Thread Content

I am working on the ammonia synthesis shift process, and I’m encountering problems when controlling the pressure in the gas tower; I hope experts can offer some guidance 1. When the pressure in the gas tower is controlled at 0.12 MPa (gauge pressure), water vapor accounts for 90% of the gas coming out of the tower; heat exchange with the water coming from the bottom of the ammonia washing tower is not sufficient to condense the gas exiting the tower. 2. When the pressure in the gas tower is controlled at 0.32 MPa (gauge pressure), water vapor makes up 50% of the gas exiting the tower, and heat exchange with the water from the bottom of the ammonia washing tower is sufficient to condense the gas coming from the top of the tower. According to other sources, it seems that the appropriate pressure for controlling the gas tower should be 0.12 MPa; I’m not sure why this is the case. I would appreciate some guidance