How to increase the flash point of diesel? ? ?
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The control of diesel flash point is primarily achieved by adjusting the amount of gas injected into the stripping tower; an increase in the gas injection volume leads to an increase in the flash point. It can also be controlled by adjusting the liquid level in the stripping tower – an increase in the liquid level results in a higher flash point. Of course, changing the steam temperature is another option as well; an increase in temperature raises the flash point. First: the extraction temperature is too low, and the amount of material in the middle section is excessive. Second: Is the liquid level control in the diesel stripping tower set too low or too high? A level that is too low can result in too short a residence time for the diesel in the gas tower, while a level that is too high makes it difficult to remove the light components. Third: The stripping capacity of the diesel stripping tower is too low. Fourth: The trays inside the stripping tower are turned over, failing to achieve adequate separation of the light components. Fifth: The temperature at the top of the tower is too low, resulting in overlap of components during the separation process.
If you remove a larger portion of the light components from diesel, its flash point will increase.
The flash point is low; it can be adjusted by increasing the amount of stripping steam； Increase the top temperature of the atmospheric pressure column to reduce the top reflux ； Adjust the pressure of the atmospheric tower (qualitative parameter; adjustments must be made carefully) ；
Raising the flash point of diesel essentially involves removing the lighter components from it, so that the separation point between diesel and naphtha does not overlap. This can be achieved in the following ways: 1. Increase the flow rate of superheated steam at the bottom of the diesel gas tower； 2. If there is a reboiler at the bottom of the diesel stripping tower, enhance heat exchange to allow as much heat source as possible to flow through the reboiler ；
By removing a larger portion of the light components from diesel, its flash point will increase. The specific measures that can be taken include: 1. Reducing the reflux flow at the top of the tower to increase the amount of light components removed； ⒉Slightly increase the bottom of tower temperature to increase the amount of light components extracted.
It is generally adjusted by modifying the amount of stripping steam