Inclined hole tray for distillation

Abstract

The invention provides an inclined hole tray for distillation. The inclined hole tray comprises a liquid holding plate, wherein an overflow weir is arranged on the liquid holding plate; a plurality of tongue holes are formed in the liquid holding plate; a tongue plate is respectively arranged on one side of each tongue hole; the tongue plate on one side of each tongue hole comprises an inclined tongue plate and a horizontal tongue plate; one end of each inclined tongue plate is connected with the liquid holding plate; the other side of each inclined tongue plate is connected with each horizontal tongue plate; each horizontal tongue plate is in parallel with the liquid holding plate; the included angle alpha of each inclined tongue plate and the liquid holding plate is 15 to 30 degrees; the tongue holes are formed in the liquid holding plate in rows, each row is in parallel with the length direction of the overflow weir respectively; the row number of the tongue holes in the liquid holding plate is an integral multiple of 3. The inclined hole tray can effectively improve the contact efficiency of gas phase and liquid phase, reduces the time when the gas phase and the liquid phase are balanced, and enables the airflow resistance to keep in a relatively lower level.

Description

technical field [0001] The invention relates to a distillation device, in particular to a slanted hole tray for distillation. Background technique [0002] The tray design of the distillation tower in the chemical industry determines the distillation efficiency. At present, the tray products on the market mainly include straight-hole trays, inclined-hole trays, bubble-cap trays and valve trays, among which straight-hole towers It is difficult to achieve full contact between the gas-liquid two-phase of the tray, which makes it difficult to achieve equilibrium between the gas-liquid two-phase, so it is gradually eliminated by the market; although the bubble-cap tray and the valve tray can achieve full contact between the gas-liquid two-phase It reaches a balance, but its own airflow resistance is relatively large, and the pressure drop of the dry plate is relatively large during operation. At the same time, its structure also determines that the operation is difficult during ...

AI Technical Summary

Problems solved by technology

[0002] The tray design of the distillation tower in the chemical industry determines the distillation efficiency. At present, the tray products on the market mainly include straight-hole trays, inclined-hole trays, bubble-cap trays and valve trays, among which straight-hole towers It is difficult to achieve full contact between the gas-liquid two-phase of the tray, which makes it difficult to achieve equilibrium between the gas-liquid two-phase, so it is gradually eliminated by the market; although the bubble-cap tray and the valve tray can achieve full contact between the gas-liquid two-phase It reaches a balance, but its own airflow resistance is relatively large, and the pressure drop of the dry plate is relatively large during operation. At the same time, its structure also determines that the operation is difficult during maintenance; and the inclined-hole tray can ensure full contact between the gas-liquid two-phase The resistance of the airflow is kept at a relatively low level, but due to the limited guiding effect on the upward airflow, the contact efficiency of the gas-liquid two-phase is relatively low, and the time required to reach equilibrium is relatively long

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