Superfine particulate matter purifying device

A technology of ultra-fine particles and purification equipment, which is applied in the separation of dispersed particles, chemical instruments and methods, combined devices, etc., can solve the problem that it is difficult to further improve the efficiency of electrostatic precipitators, the efficiency of dust removal is easily affected by dust sources, and the operation of bag filter Large resistance and other problems, to achieve the effect of increasing the condensation effect, compact structure, and small footprint

CN102772971BActive Publication Date: 2015-05-13CHINA UNIV OF MINING & TECH (BEIJING)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-05-13

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Abstract

A superfine particulate matter purifying device comprises a gas discharge-electrocoagulation device and a static enhance bag type dedusting integrated device. The gas discharge-electrocoagulation device comprises an air flow inlet (1), a corona wire (2), a gas discharge tube (3), an air flow outlet divergent pipe (5), a direct current power supply (6) and a grounding electrode (7), and the static enhance bag type dedusting integrated device comprises an air inlet (8), a magnetic valve (9), an air pocket (10), a pulse valve (11), a jetting pipe (12), a filtering bag (13), a jetting hole (14), a dust skeleton (15), a dust hopper (16), a spiral dust discharge valve (17), wires (19) and ground wires (20). The air flow inlet is arranged at one end of the gas discharge tube, the other end of the gas discharge tube is connected with the air flow outlet divergent pipe, the dust skeleton is formed by distributing the wires and the ground wires in a vertical direction at intervals, and the superfine particulate matter purifying device is suitable for smoke dust removing and particularly superfine dust purifying devices for particulate matter (PM) below 2.5.
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Description

technical field

[0001] The invention relates to a purification device for ultrafine particles, which belongs to the technical field of air pollution control. Background technique

[0002] Studies have shown that heavy metals in industrial or power industry flue gas are present in ultrafine particulate matter (including PM 10 and PM 2.5 ) surface concentration trend, and the dioxin-like organic matter produced in the waste incineration process also showed the same characteristics. In view of the great harm of ultrafine particles to human health and the lack of emission control standards for ultrafine particles in my country, how to effectively remove and control ultrafine particles in the atmosphere has become a new hot issue.

[0003] At present, the widely used dust removal devices are mainly electrostatic precipitators and bag filter. The electrostatic precipitator uses an electric field to ionize the dust-containing gas to charge the dust particles. Under the action of...

Examples

Embodiment

[0027] The present invention is made up of two parts altogether, and the first part is the gas discharge-coagulation device, see attached figure 1 ; The second part is an electrostatically enhanced bag-type dust removal integrated device.

[0028] The mass fraction of dust particle size 0-2.0μm at the inlet of the dust collector is 52.3%, the mass fraction of 2.0-5.0μm is 39.1%, the mass fraction of 5.0-8.0μm is 8.2%, and the mass fraction of 8.0-10.0μm is 0.4%. ; The filter bag is made of glass fiber, and the number of bag filter chambers is 6; the applied voltage is 7-16 kV; the filtering wind speed is 2.0m / min-4.0m / min.

[0029] (1) When the filtering wind speed is 2.5 m / min and the applied voltage is 10.5kV, the dust removal efficiency is 99.2%, and when the applied voltage is 15.8kV, the dust removal efficiency is 99.9%.

[0030] (2) When the filtering wind speed is 4.0 m / min and the applied voltage is 10.5kV, the dust removal efficiency is 99.2%, and when the applied vo...