Spiral rotating bed

Abstract

The invention discloses a spiral rotating bed, comprising a spiral bed layer, a liquid-phase distribution pipe, a shell, a gas-phase inlet, a gas-phase outlet, a liquid-phase inlet, a liquid-phase outlet, and the like, wherein the spiral bed layer is made of porous materials and forms a spiral shape on the axial direction; the liquid-phase distribution pipe is arranged in the axial center of the spiral bed layer and communicated with the liquid-phase inlet; the gas-phase inlet and the gas-phase outlet are arranged at two ends of the shell, and the liquid-phase outlet is arranged at the bottomof the shell. The spiral rotating bed is suitable for gas-liquid mass transfer and reaction, especially the gas-liquid mass transfer and reaction for removing harmful ingredients in gas phase by utilizing liquid phase and with larger gas-liquid. The device has simple structure, small size, high mass transfer efficiency and low pressure drop, can obtain longer gas-liquid two-phase contact paths, realizes forced updating on the surface of droplet surface, and is beneficial to the gas-liquid mass transfer and reaction.

Description

technical field [0001] The invention relates to a helical rotating bed, in particular to a device which utilizes a high-speed rotating helical bed to complete gas-liquid mass transfer and reaction in a state of supergravity. Background technique [0002] The mass transfer and reaction equipment of the high gravity field rotating bed is a new type of chemical unit equipment developed in the early 1980s. Compared with the traditional technology, the high-gravity field rotating bed mass transfer equipment has the characteristics of high mass transfer intensity, small equipment size, short material residence time, low liquid holding capacity, and no flooding. [0003] Usually, the high-gravity field rotary bed equipment is composed of a casing, a rotor (reaction bed) and a motor. The rotor is a porous medium with the properties of a filler, where the material undergoes mass transfer and reaction. The gas phase needs to be transported by a fan, especially when the gas-liquid cou...

AI Technical Summary

Problems solved by technology

The shortcomings of the above-mentioned high-gravity field rotating bed are that the gas phase resistance is large, the contact path of the gas-liquid two-phase is relatively short, and the surface renewal rate of the droplets is slow, which is not conducive to further improving the mass transfer process.

CN2581060Y discloses a rotating bed high-gravity multiphase reactor, which adopts a spiral channel type rotating bed. The spiral channel is an Archimedes spiral in the radial direction and a through channel in the axial direction. The rotating bed of this structure can obtain Long gas-liquid two-phase contact path, but still has the disadvantages of high resistance and no suction capacity

At the same time, due to the suction effect of the impeller, there will be phenomena such as gas phase bias flow and liquid phase entrainment.

In some fields, such as the field of flue gas purification treatment, due to the low gas phase pressure, the treatment equipment with obvious pressure drop cannot be applied, and the gas volume is large, and the energy consumption will be greatly increased if the gas delivery device is added.

Therefore, when above-mentioned existing high-gravity rotating bed is used for these fields, be subjected to certain restriction

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