How to reduce moisture in catalyzed light diesel?
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Catalytic diesel hydrorefining cracking units require that the moisture content in the feedstock be no more than 300PPM; currently, the moisture level in catalytic diesel is generally between 600–1200PPM. Are there any methods to reduce the moisture content to meet this requirement?
First, make adjustments at the source by appropriately reducing the amount of stripping steam while ensuring that the diesel flash point meets the required standards. Additionally, during subsequent processing, the mixture can be cooled before being sent to a buffer tank for dehydration; an increased residence time helps ensure thorough water removal. Thirdly, water-absorbing additives can be used to control the water content
The diesel’s flash point also needs to be within the acceptable range
I am considering stopping the use of stripping steam in my unit and using dry gas as the stripping medium, waiting anxiously for good news. Follow-up report.
Optimize the control of the stripping steam volume. Additionally, high steam moisture content in some devices is also a factor. Another issue is that keeping the temperature at the light diesel distillation outlet too low (in order to control the gasoline-to-diesel ratio) also leads to an increase in water content