In the single-tower pressurized side-line ammonia extraction process of the sewage stripping tower, is the valve at the bottom of the tower normally open or closed?
Thread Content
In the single-tower pressurized side-line ammonia extraction process of the sewage stripping tower, the No. 2 valve at the bottom of the tower is normally open or closed when it is started.
It should be closed. This line is used to establish the liquid level of the reboiler at the beginning of the operation. It should be closed after use.
I feel the same way but the unit has been on since construction started.
This is the line for filling the reboiler. It is usually slightly open or closed. It is used when steam lock occurs in the reboiler. Leave some opening for prevention.
It's on when it starts working, and it's off when it's normal!
In the initial stage of construction, it is turned on to establish circulation as soon as possible. After normal operation, it should be closed.
It must be turned off, because if it is not turned off, there may be a short circuit, that is, the reboiler will not be connected or partially connected. Because one more device and one pressure difference will increase energy consumption in a small way. If there are too many, the stripping effect may become worse.