Online demister

Abstract

The invention discloses an online demister which can effectively eliminate bubbles under the working condition of low-flow-rate, dense and tiny foam. The online demister comprises a demister body with a hollow structure, wherein a division board is vertically arranged in the inner chamber of the demister body and divides the inner chamber of the demister body into a separation space and an airflow space; a channel allowing airflow to pass through is reserved between the division board and the bottom of the demister body; an air inlet pipe is arranged at the part, corresponding to the separation space, on the side wall of the demister body; an air outlet pipe is arranged at the part, corresponding to the airflow space, on the side wall of the demister body.

Description

technical field [0001] The invention relates to a demister, in particular to an online demister. Background technique [0002] In the process of chemical process production in chemical enterprises, the gas of various gas-liquid phase contact equipment often entrains a lot of bubbles when leaving the equipment, such as tower equipment, evaporator, etc. It is generally required to separate the air bubbles entrained in the gas so as not to affect the quality of the gas or the operation of the next process. [0003] In some airflows with vacuum as the driving force of gas flow, in order to increase the gas handling capacity and reduce the flow resistance, generally a larger flow pipe diameter is selected to reduce the flow velocity. If the flow velocity is low and small continuous bubbles are added to the gas, the traditional baffle and wire mesh demisters will fail. [0004] There are two main types of common demisters: wire mesh demisters and baffle plate demisters. The baf...

AI Technical Summary

Problems solved by technology

The baffle plate demister has simple structure, high capture efficiency for medium-sized and large-sized droplets, relatively low pressure drop, and easy flushing; however, for droplets with a particle size of less than 5 μm, the removal ability is poor

The wire mesh demister can not only remove larger droplets in the airflow, but also filter out tiny droplets; but under high-speed airflow, the resistance is relatively large

In addition, these two demisters also have a fatal shortcoming, that is, if they encounter low flow rate, dense and fine foam flow, these demisters will be submerged and lose their demister effect.

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