The heat load problem in catalytic fractionation towers
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The heat load of the catalytic fractionation tower is high. How should the heat load be reduced? ?
The heat load of the catalytic fractionation tower mainly comes from the reaction section; the level of reaction temperature determines the magnitude of the fractionation heat load. If this heat load is too high, it can be controlled by adjusting the amount of slurry flowing back up the tower, or by adjusting the flow rates of the various side streams. It is preferable for these side streams to carry away heat
What was said upstairs is correct; I’d like to add that transferring the oil slurry outside can also reduce the thermal load on the distillation tower； Slurry reprocessing and the amount of reprocessed oil are also ways to reduce the distillation heat load.
Heat can be obtained using the reflux of the distillation column. The heat absorbed from the top circulation in our unit accounts for 25% of the heat from oil and gas, 15% from the intermediate stage, 40% from the slurry circulation, while the oil and gas at the top of the distillation tower accounts for 20%. Heat can be extracted through top circulation, middle circulation, and slurry circulation. Additionally, attention should be paid to the outlet temperature of the heat exchanger to prevent excessive temperatures from causing water hammer.
The heat load of the catalytic fractionation tower is high; how can this heat load be reduced? The heat load mainly comes from the reaction section, so it is necessary to lower the reprocessing ratio and the reaction temperature. Reduce the distillation heat load.