As the diesel extraction volume in the catalytic fractionation tower increases, how does the freezing point change? And why?
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As the diesel extraction volume in the catalytic fractionation tower increases, how does the freezing point change? And why?
If the middle section remains unchanged, the extraction amount increases and the freezing point decreases. If the intermediate temperature increases or the intermediate amount decreases, the freezing point should increase.
It depends on what caused it; has there been any change in the diesel extraction temperature? Has the temperature in the middle section changed, and has the dry point of the crude steam decreased?
I believe that an increased extraction rate leads to a rise in the flash point; a high extraction rate brings heavier components into the diesel system, and as a result, the flash point of the diesel definitely decreases. Last edited by chengkang on 2009-3-28 21:23.]
The extraction volume has increased; this can be attributed to less liquid phase being carried back with the oil, which affects the mass transfer of oil and gas. As a result, heavier components are also extracted, leading to an increase in the freezing point of light diesel.
It can be simply assumed that if the amount of diesel extracted is high, it is due to the lowering of the dry point of crude gasoline; as a result, the initial boiling point of light diesel decreases, along with its freezing point； If it is due to an increase in the intermediate temperature, causing components that should belong to heavy diesel or reprocessed oil to be transferred into light diesel, then the freezing point of light diesel rises as a result of the 95% increase in its boiling point, or in other words, its final boiling point.
As the extraction amount increases, the freezing point must rise, the dry point rises, and the flash point decreases
It depends on what adjustment measures are taken; the effects will vary depending on whether the middle-stage components are raised or the dry point of the crude vapor is suppressed
The freezing point is a harmonization index; by compressing the components of gasoline to diesel levels and raising the dry point of diesel, the freezing point can remain unchanged.
It depends on what caused it; has there been any change in the diesel extraction temperature?