Efficient sieve plate carbonating tower with liquid phase as continuous phase

Abstract

The invention discloses an efficient sieve plate carbonating tower with a liquid phase as a continuous phase, which comprises a tower body; a plurality of low-opening-rate sieve plates with downcomers are arranged in the tower body from top to bottom; the opening rate of the sieve plates is 0.3-2.5 percent; and a certain gap is left between two adjacent sieve plates. The low-opening-rate sieve plates with the downcomers are arranged in the tower body, so that a layer of air cushion can be formed below the sieve plates, the problem of axial backmixing of the liquid among the sieve plates is solved, and the absorption efficiency of the sieve plates is improved; because the composition and the volume of the gas in the tower are both in a changing process, the diameters, the number and the opening rate of sieve pores of the sieve plates in the tower change; through model observation, under the condition that the tower body is filled with liquid, the sieve plates arranged correspondingly arranged according to the change of the composition and the volume of the gas in the tower are more beneficial to improving the efficiency of absorbing the gas in the tower by the sieve plates; and through the arrangement of at least two downcomers on each sieve plate, the liquid can be uniformly distributed on the next layer of the sieve plate after passing through the sieve plate.

Description

technical field [0001] The invention relates to a high-efficiency sieve plate carbonation tower with liquid phase as continuous phase. Background technique [0002] The carbonation reaction is a slow chemical reaction, so the reaction equipment is required to have sufficient liquid phase residence time. Historically, the carbonation tower is filled with liquid, and the liquid phase is the continuous phase, which can increase the liquid residence time in the tower and fully Complete the chemical reaction. [0003] The traditional carbonation towers all use cap trays, which are bubbling trays with the liquid phase as the continuous phase, and are cast with cast iron. However, since the gas and liquid phases mix and flow up and down in the same channel, there are inevitably serious problems. The tower liquid is axially back-mixed, thereby reducing the efficiency of the tray, reducing the production intensity of the tower, and reducing CO 2 absorption efficiency, resulting in ...

AI Technical Summary

Problems solved by technology

In 2004, Dalian Chemical Industry Research and Design Institute applied for the patent for the invention of the multi-stage sieve tray inner circulation carbonization tower. There are still bacterial caps on the sieve plate, which is an improved bacterial cap tray with a relatively complicated structure.

In 2006, Tianjin Bohai Chemical Co., Ltd. applied for the invention patent of the sieve plate carbonization tower. The sieve plate aperture of the tower is 30-110mm, and the opening rate is 6-20%. There is no downcomer, which is a high opening rate, and the gas-liquid mixed flow structure, there is still the disadvantage of axial back-mixing of tower liquid

In the soda production, the carbonation tower not only uses the liquid phase as the continuous phase, but also has a supersaturated solution with a large number of solid crystals suspended in the tower, and it is easy to accumulate crystals on the tray and cause scarring, so the high efficiency of general chemical engineering Trays are not applicable

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