contact method - flash with inert gas
contact method - flash with inert gas
(OP)
In a flash drum, inert gas can be used to put down the vapour pressure of a component and so increase its transfer from liquid to vapour phase. In particular when, fixed the temperature, there is necessity to due the operation at vacuum pressure, inert gas can allow the operation to less negative pressure.
Now the question:
1) It's possible to have the right contact between liquid and inert gas (nitrogen) to consent the flash of light component, without filling in the coulumn, but only distributors?
2) If Yes, how I can calculate the right bubble size?
3) I think that a static mixer istalled upstream of drum can be a better solution than two complex internal ditributors, but what size must have the bubbles of gas?
Thanks for reply
Now the question:
1) It's possible to have the right contact between liquid and inert gas (nitrogen) to consent the flash of light component, without filling in the coulumn, but only distributors?
2) If Yes, how I can calculate the right bubble size?
3) I think that a static mixer istalled upstream of drum can be a better solution than two complex internal ditributors, but what size must have the bubbles of gas?
Thanks for reply





RE: contact method - flash with inert gas
RE: contact method - flash with inert gas
RE: contact method - flash with inert gas
a vacuum multistage operation needs an operative absolute pressure minor than vapour pressure of separating component, at max temperature available (Low steam utilities is used, so we can say about 120°C).
Using inert gas, it's possible an higher pressure and so a smaller vacuum system.
All Your critical comments are welcome.
My worry is the size of bubble and performance of unit without traies or packed bed. Help...
RE: contact method - flash with inert gas
RE: contact method - flash with inert gas
RE: contact method - flash with inert gas
StoneCold
RE: contact method - flash with inert gas