A packing-flotation column was proposed to optimize the flotation environment A research system was es- tablished using a 100 mm diameter cyclonic micro-bubble flotation column to study fluid properties. Dry-plate and...A packing-flotation column was proposed to optimize the flotation environment A research system was es- tablished using a 100 mm diameter cyclonic micro-bubble flotation column to study fluid properties. Dry-plate and wet- plate pressure drops were studied and the corresponding pressure drop equations developed. The results show that the dry-plate pressure drop of the packing cyclonic micro-bubble flotation column is 10–15 times less than that of the chemical tower, which is principally shown in its relatively small resistance coefficient, ξ ≈0.0207. The wet-plate pressure drop is 2–3 times higher than that of the chemical tower, which is largely caused by the separation materials and characteristics of the equipment. With flotation, the greater the pressure drop, the better the flotation environment.展开更多
1 INTRODUCTIONValve tray columns are one of the most important mass transfer equipment for vapor-liquidoperations and are widely used in the petroleum and chemical industries.They have good op-erating performances wit...1 INTRODUCTIONValve tray columns are one of the most important mass transfer equipment for vapor-liquidoperations and are widely used in the petroleum and chemical industries.They have good op-erating performances with floatable parts on the trays.There are various of valve trays,andType V1(F1-type)valve trays are used very common in industry.Though Type V1 valvetrays have a number of advantages,it has been found in recent years that there are also cer-tain drawbacks,for example,higher hydraulic gradient on the tray,more backmixing展开更多
基金Project 50425414 supported by the National Outstanding Youth Science Foundation of China
文摘A packing-flotation column was proposed to optimize the flotation environment A research system was es- tablished using a 100 mm diameter cyclonic micro-bubble flotation column to study fluid properties. Dry-plate and wet- plate pressure drops were studied and the corresponding pressure drop equations developed. The results show that the dry-plate pressure drop of the packing cyclonic micro-bubble flotation column is 10–15 times less than that of the chemical tower, which is principally shown in its relatively small resistance coefficient, ξ ≈0.0207. The wet-plate pressure drop is 2–3 times higher than that of the chemical tower, which is largely caused by the separation materials and characteristics of the equipment. With flotation, the greater the pressure drop, the better the flotation environment.
文摘1 INTRODUCTIONValve tray columns are one of the most important mass transfer equipment for vapor-liquidoperations and are widely used in the petroleum and chemical industries.They have good op-erating performances with floatable parts on the trays.There are various of valve trays,andType V1(F1-type)valve trays are used very common in industry.Though Type V1 valvetrays have a number of advantages,it has been found in recent years that there are also cer-tain drawbacks,for example,higher hydraulic gradient on the tray,more backmixing
