Novel composite wet-type dedusting and demisting tower

Abstract

The invention discloses a novel composite wet-type dedusting and demisting tower which comprises a purification tower, the purification tower is vertically arranged, a cyclone dedusting area, a spraying dedusting area, a liquid drop settling area, a rectification area, a gas-liquid separation area and a flow stabilization area are sequentially arranged in a tower body of the purification tower from bottom to top, the cyclone dedusting area is of an inverted-cone-shaped structure, a waste gas inlet tangent to the cyclone dedusting area is formed in the top of the cyclone dedusting area, a mud bin is formed in the bottom of the cyclone dedusting area, a mud outlet is formed in the bottom of the mud bin, and a screw pump is installed at the mud outlet in a sealed mode for negative-pressure mud discharging. The tower is simple in structure and small in occupied area, dust particles and fog drops in waste gas are gradually separated and purified step by step through the cyclone dedusting area, the spraying dedusting area and the gas-liquid separation area in sequence from bottom to top in the waste gas flowing direction, and the fine dust particle removal effect is good. By arrangement of the rectification area, the liquid drop settling area and the flow stabilization area, the dedusting and demisting capability of the purification tower on wet waste gas containing fine dust is further improved, and the purposes of reducing cost and improving efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of dust removal and fog removal, in particular to a novel composite wet dust removal and fog removal tower. Background technique [0002] According to the collection mechanism, dust collectors can be divided into mechanical dust collectors, electric dust collectors, filter dust collectors and washing dust collectors. The mechanical dust collector relies on mechanical force to remove dust particles from the airflow. It has a simple structure, low equipment and operating costs, but the dust removal efficiency, especially for fine dust, is not high. The electrostatic precipitator uses electrostatic force to separate the dust particles from the air flow. It is often classified according to the plate type and the tube type. It is characterized by small air flow resistance and a dust removal efficiency of over 99%. The investment is higher and the floor area is larger. The filter dust collector makes the dust-la...

AI Technical Summary

Problems solved by technology

The filter dust collector makes the dust-laden air flow pass through the filter material to separate and capture the dust particles. It is divided into two methods: internal filtration and surface filtration. The dust removal efficiency is generally 90%~99%, but it is not suitable for high temperature or humidity containing droplets. exhaust gas

The dust collector uses liquid to wash the dusty gas, so that the dust particles collide with the liquid droplets or liquid film to be captured and separated from the air flow. The dust removal efficiency is 80%~95%, but the content of the outlet exhaust gas mist cannot be controlled, and the operating cost is relatively high. high

At present, various single types of dust collectors cannot effectively remove dust and fog from wet waste gas containing fine dust. How to effectively treat wet waste gas containing fine dust has become a key problem that needs to be solved urgently

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