Novel blade type demister

Abstract

The invention discloses a novel blade type demister, and relates to the technical field of demisters, the novel blade type demister comprises a shell, a pre-separator and a separator, one side surface of the shell is provided with an air inlet, the top of the shell is provided with an air outlet, the air inlet is communicated with the pre-separator, the shell is internally provided with the separator, and an air flow outlet of the pre-separator corresponds to an air flow inlet of the separator. An air flow outlet in the top of the separator corresponds to the air outlet, a liquid outlet end at the bottom of the separator is communicated with a condensate discharge pipe, the separator comprises a silk screen collector and a blade separator, the silk screen collector is arranged on the outer side of the blade separator, the blade separator comprises a plurality of blades vertically arranged in the shell, and the blades are of a double-pocket type structure. The condition of secondary entrainment is avoided, and the separation efficiency is effectively improved; the utility model solves the defects of a silk screen filter separator, and has the effects of high efficiency, reasonable design, simple structure, convenience in cleaning, small volume, lower manufacturing cost, no energy consumption, small airflow pressure drop, reliability, stability and effective reduction of investment cost.

Description

technical field [0001] The invention relates to the technical field of mist eliminators, more specifically, it relates to a novel vane type mist eliminator. Background technique [0002] Wire screen demisters have been used at the inlet of steam turbine compressors to remove condensed water contained in steam. With the improvement of steam turbine capacity in engineering applications, the fatal flaws of wire mesh demisters are obvious: [0003] 1. The wire diameter of the wire mesh is relatively small, about 0.5mm (need to remove the liquid droplets above 3-5 microns, reaching more than 99.8%). The wire mesh is easily washed and shaken by the large flow of steam. The breakage of the wire occurs, causing mechanical damage to the downstream high-speed steam turbine. [0004] 2. Due to the relatively high density of the wire mesh, it is easy to cause a large pressure drop through the wire mesh demister, which will cause a large loss of kinetic energy of the steam and reduce t...

AI Technical Summary

Problems solved by technology

[0003] 1. The wire diameter of the wire mesh is relatively small, about 0.5mm (it needs to remove more than 3-5 microns of liquid droplets, reaching more than 99.8%). The wire mesh is easily washed and shaken by the large flow of steam. The breakage of the wire will cause mechanical damage to the downstream high-speed steam turbine

[0004] 2. Due to the relatively high density of the wire mesh, it is easy to cause a large pressure drop through the wire mesh demister, lose a lot of kinetic energy of the steam, and reduce the power generation of the steam turbine

[0005] 3. Due to the relatively high density of the wire mesh, it is easy to cause a large pressure drop through the wire mesh demister. Therefore, in the case of processing the same flow rate, the gas flow rate needs to be controlled in a relatively low range, which will cause equipment particularly huge

[0006] 4. Due to the principle of the separation of liquid droplets by the wire mesh eliminator: after the liquid droplets gather relatively large, they fall under the action of gravity to separate the gas and liquid, but the gas moves upward and the liquid droplets move downward, and convection occurs, which is easy to cause The separated droplets are entrained by the airflow at a certain flow rate to cause mist entrainment, which reduces the separation efficiency and effect

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