| 摘要 |
PURPOSE: A method for increasing output of crude light oil is provided to constantly control temperature and pressure of the top of tower in steam stripper by installing electric powered valves in such a way that pressure of the electric powered valves is automatically interlockingly connected. CONSTITUTION: The method for increasing output of crude light oil comprises the steps of maintaining temperature of rich oil(30) supplied to steam stripper to 180 deg.C; using superheated vapor having a temperature of 180 deg.C or more as a steam supplied to the steam stripper; and constantly maintaining pressure of the tower top of the steam stripper to 800 to 1,000 mm H2O and maintaining temperature of the tower top of the steam stripper(50) to 85 to 90 deg.C, wherein the quantity of steam supplied to the steam stripper can be reduced by maintaining temperature of the rich oil to temperature of vapor pressure or more of the respective constituents when supplying the rich oil containing crude light oil constituents such as benzene, toluene and xylene into the steam stripper, the crude light oil constituents in the rich oil are condensed if temperature of steam supplied from the lower part of the steam stripper is lower than temperature of the rich oil since temperature of the rich oil(30) supplied into the steam stripper(50) is 180 deg.C, and pressure of the tower top of the steam stripper is maintained to 800 to 1,000 mmH2O while temperature of the tower top of the steam stripper is maintained to 85 to 90 deg.C since the crude light oil constituents in the rich oil are condensed to result in reduction of output of crude light oil due to low pressure of the tower top of the steam stripper if temperature of steam supplied is lower than temperature of the rich oil.
|
