Large-liquid holdup catalytic-reaction rectifying tower plate

Abstract

The invention relates to a large-liquid holdup catalytic-reaction rectifying tower plate which consists of a downcomer 1, an overflow weir 2, a partition plate 3, a U-shaped tower plate with a mass transfer element 9 and a liquid holding pot 5, wherein the liquid holding pot 5 is attached on the horizontal line of the U-shaped tower plate 4, the upper edge of the liquid holding pot 5 is slightly higher than the U-shaped tower plate but is lower than the overflow weir 2, and one side wall of the liquid holding pot 5 is used as a tower wall 10; the partition plate 3 divides the U-shaped tower plate into two parts and extends to the middle lower part in the liquid holding pot 5 which is partitioned into a dropping catalytic zone 6 and a lifting catalytic zone 7, and the partition plate 3 is connected with the tower wall. The middle lower part of the liquid holding pot 5 is provided with a screen plate, a screen or a grille as a catalyst support for partitioning a liquid holding zone intoa catalytic reaction zone and a liquid horizontal channel 8, and the catalytic reaction zone can be filled with a catalyst. The liquid holdup and the residence time of the tower plate of the invention are 1.5-3 times those of the traditional tower plate.

Description

technical field [0001] The invention relates to a novel catalytic rectification tray with large liquid holding capacity, which is a structure improvement for the rectification tray in petroleum refining and chemical industry. Background technique [0002] In petroleum processing, chemical industry, fine chemical industry, environmental protection and other industrial processes, various plate separation and mass transfer towers are widely used to separate liquid mixtures and gas phase mixtures of various components according to requirements. There are various types of tray towers, such as bubble cap towers, sieve tray towers, valve towers, tongue trays, etc. Catalytic reaction rectification is a new type of reaction and separation process with broad application prospects. Catalysts are installed in the rectification tower, so that the reaction and separation process of materials can be completed in the rectification tower at the same time. Due to the timely presentation of t...

AI Technical Summary

Problems solved by technology

In a conventional catalytic reaction distillation tower, conventional materials such as wire mesh for the catalyst are bundled and placed on the tray or in the downcomer so that the liquid can contact the catalyst when it flows through. Due to the limitations of the tray structure and operating conditions, The loading amount of the catalyst and its contact area with the liquid phase are very limited, and the small liquid holding capacity and short residence time of the tray are the main reasons for the low efficiency of many reactive distillation applications.

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