When the cooling effect of the tower top cooler becomes worse, it should ( ).
To make the top of the tower pour corrosion inhibitor for better effect, generally pour ( ) after the pour corrosion inhibitor.
The effect of the cold reflux at the top of the tower is ( ).
The greater the cold return at the top of the tower, the following statement is wrong ( ).
The greater the cold return at the top of the tower, then ( ).
Tower top cold reflux belongs to ( ).
The medium for the top circulation return of the atmospheric tower is ( ).
High return flow in middle section favors ( ).
Other conditions remain the same, increase the normal top circulation return flow, then the tower top pressure ( ).
High return flow in middle section is not good for ( ).
The crude oil is generally provided with a mixer before entering the desalting tank for the purpose of ( ).
The function of the crude oil inlet distributor in the electric desalting tank is ( ).
Electrical desalting main equipment does not include ( ).
What is wrong with the following statement about the role of electric desalting high voltage distribution systems is ( ).
When the oil/water level of the electric desalting tank is high, it should be ( ) to lower the oil/water level.
