The issue of gas phase temperature in catalytic fractionation
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In my catalytic fractionation column, the temperature of the liquid phase in the middle section is around 275 degrees. When the reaction and fractionation processes are operating stably with little fluctuation, the temperature of the gas phase in that middle section can drop from over 290 degrees to around 270 degrees; after another 10–20 minutes, it rises back to 290 degrees. Could this be due to changes in the gas phase load inside the column?
How are your fractionation columns arranged: primary, secondary, light hydrocarbons, and is there a top circulation? Is there heavy ore? Are the temperature fluctuations occurring during normal production? Does it still happen when you make adjustments? What parameters were adjusted?
For the 600,000-ton plant, with light diesel, nothing else changes when the temperature at the intermediate stage varies; no adjustments are needed during normal operation