Precipitator

Description

Precipitator is used to trap dry granular non-fibrous dust. Its main features are inverted cone-shaped tube, thus reducing the dust from the gas exportCenter to go short-circuit the possibility of, and equipped with a conical reflection of the screen, to prevent separation of the two currents that have been rolled down to the dust was rising out of air and thus improve the collection efficiency.

Applied to metallurgy, casting, building materials, food chemicals, cement and other industries, the trap dry granular non-fibrous dust and soot removal, materials, equipment can be recovered.

There are many kinds of pollutants produced in industrial production activities. According to their existing state, they can be divided into two categories: particulate pollutants and gaseous pollutants. In order to protect human body and property safety, air pollution must be controlled during production. To this end, the state has set a series of atmospheric environmental quality control standards, mainly including three aspects: ambient air quality standards, emission standards and environmental technical standards.

The equipment often used in the control of air pollutants and particulate pollutants includes four categories:

(1) Mechanical dust collector: including gravity settling chamber, inertial dust collector and cyclone dust collector.

(2) Filter type dust collector: including bag type dust collector and particle layer dust collector.

(3) Electrostatic precipitator: including dry electrostatic precipitator and wet electrostatic precipitator.

(4) Wet dust collector: including foam dust collector, spray tower, packing tower, impact type dust collector and Venturi scrubber.

Among many types of dust removers, bag type dust remover is one of the goals of most enterprises in terms of dust removal efficiency and cost performance.

Parameters

Features

Bag filter has the following advantages:

① The dust removal efficiency is high, especially for fine powder, which is generally more than 99%;

② It has strong adaptability and can handle different types of particulate pollutants (including high specific resistance dust that is not easy to be treated by electrostatic precipitator). Small bag filter or large bag house can be designed according to the treatment gas volume;

③ When the operation flexibility is large and the dust concentration of the inlet gas changes greatly, the influence on the dust removal efficiency is small. In addition, the dust removal efficiency also has certain stability to the change of air flow velocity;

④ Simple structure, flexible use, easy to recover dry materials, no sludge treatment.

The application of bag filter is mainly limited by the operating performance of filter cloth such as temperature resistance and corrosion resistance; The service temperature of general filter cloth is less than 300 ℃; The bag type dust collector is not suitable for taking out the dust particles with strong adhesion and moisture absorption. In particular, the temperature of the flue gas cannot be lower than the dew point temperature, otherwise it will frost on the filter cloth, resulting in the blocking of the bag, thus affecting the normal operation of the bag type dust collector.

Application