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Effect of tower body skew on distillation efficiency

Effect of tower body skew on distillation efficiency
Oct 12, 2024
Author: DEAR AST

There are certain requirements for the parallelism of each tray when manufacturing a distillation column. During installation, good levelness of each tray can be ensured only when the tower body is vertical. If the tower body is skewed, the tray cannot be kept horizontal, which will inevitably lead to uneven liquid layer thickness on the tray, and the resistance at the place where the liquid layer is thick will be large, and the gas passing through will be reduced; Where the liquid layer is thin, the resistance will be small, and the gas will pass through more. In this way, it may cause uneven bubbling, that is, bubbling in some places and non bubbling in some places. In places where a large amount of gas passes through, the air flow speed is fast, the contact time between gas and liquid is reduced, and there is no heat and mass exchange in places where there is no bubble. As the area and time of gas and liquid contact are reduced, the distillation efficiency and product purity are reduced, and in serious cases, liquid leakage may occur locally. This will seriously affect the rectification effect and product purity.

Energy saving air separation is DEAR's business card! China is a country with a serious shortage of energy resources. The per capita remaining recoverable reserves of oil and natural gas are only 7.7% and 7.1% of the world average, and the relatively rich coal reserves are only 58.6% of the world average. During the 30 years of reform and opening up, China's energy conservation and emission reduction work has made great achievements: as early as the early 1980s, the country formulated the energy development policy of "laying equal stress on development and conservation, and putting conservation in the key position in the near future". And continues to this day. Energy saving air separation is DEAR's business card! China is a country with a serious shortage of energy resources. The per capita remaining recoverable reserves of oil and natural gas are only 7.7% and 7.1% of the world average, and the relatively rich coal reserves are only 58.6% of the world average. During the 30 years of reform and opening up, China's energy conservation and emission reduction work has made great achievements: as early as the early 1980s, the country formulated the energy development policy of "laying equal stress on development and conservation, and putting conservation in the key position in the near future". And continues to this day.

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