Distillation tower pressure control content
Thread Content
The top pressure of the distillation tower is between ##~##. Specific pressure is affected by temperature. When the circulating cooling water feed water temperature is low, such as in winter, the top pressure of the distillation tower is generally ##. When the circulating cooling water supply temperature is high, such as in summer, because the heat exchange area of the distillation tower condenser is fixed, only by increasing the top pressure of the distillation tower to increase the condensation temperature on the hot side of the distillation tower condenser and maintaining the heat transfer temperature difference can the same condensation heat load be ensured. The overhead pressure of Distillation Column is between ## and ###. The actual pressure is effected by the temperature . when the teperature is lower, such as in winter, the overhead pressure general is about ## . when the temperature is higher, such as in summer, for the heat transfer area of Distillation Column condenser is constant, so only increasing the overhead pressure of Distillation Column to rise the hot side temperature of the Distillation Column condenser and maintain the heat transfer temperature difference , in this way, thermal load of condensation can be guaranteed. Please help correct the error in Chinese-English translation. The red line marks the thermal load. Is it heat duty or thermal duty, which is better? This post was last edited by niulijun117 on 2009-2-26 09:56 ]
There are many questions. The problem is not just the red part. I suggest you Google to translate it and then edit and modify it based on your own knowledge. Is the pressure and temperature increase in summer to maintain the heat transfer temperature difference?
I modified it as follows: when the temperature is higher (maybe in summer) due to the heat exchanger area in condenser is fixed, so only increasing the top pressure of Distillation Column to increase the hot side temperature of the Distillation Column condenser, hence, the heat transfer delta T will keep at constant , also to ensure that heating load of condenser was keeping at same codition.
For your reference The actual pressure is effected by the cooling water temperature . When the CW temperature is lower, such as in winter, the overhead pressure general is about ## ;
Yes, the pressure and temperature increase in summer are to maintain the heat transfer temperature difference.
Professional usage, HEAT DUTY.
heat duty is more appropriate