【Learn Ethylene Together】Five questions per day to easily learn about ethylene 55

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【Learning Ethylene Together】Five questions per day to easily learn about ethylene 55 21. When a gasoline distillation column is changed from a floating valve column to a packed column, the column’s efficiency and capacity can **increase**, but the pressure drop across the column increases as well. 22. The steam jet pump functions as a regular centrifugal pump. 23. For a pneumatic diaphragm control valve, if 50% of the opening stroke is achieved, the flow rate through the valve should also be 50% of the maximum value. 24. For equipment, lubricating oil serves only a lubricating purpose. 25. The quenching temperature of the pyrolysis gas should be as low as possible, as this facilitates energy recovery and rapid termination of secondary reactions. 21. After replacing the float valve tower with a packed tower in the gasoline distillation column, the tower efficiency and capacity can **be improved, but the pressure drop across the tower increases. × 22. The steam jet pump functions as a regular centrifugal pump. × 23. For a pneumatic diaphragm control valve, if 50% of the opening stroke is achieved, the flow rate through the valve should also be 50% of the maximum value. × 24. For equipment, lubricating oil serves only a lubricating purpose. × 25. The quenching temperature of the pyrolysis gas should be as low as possible, as this facilitates energy recovery and rapid termination of secondary reactions. ×