Double-membrane microelectrostatic precipitator

Abstract

The invention relates to a double-membrane microelectrostatic precipitator, and relates to the field of special equipment for ultra-low-emission of particulate matter. A primary dust capturing section comprises a primary three-dimensional mass transfer liquid collecting disc, a primary membrane micro-electrocoagulation layer and a primary membrane distributor, and the primary membrane micro-electrocoagulation layer is arranged above the primary three-dimensional mass transfer liquid collecting disc; the primary membrane distributor is arranged above the primary membrane micro-electrocoagulation layer, and a secondary dust capturing section is arranged above the primary membrane distributor; the secondary dust capturing section comprises a secondary three-dimensional mass transfer liquid collecting disc, a secondary membrane micro-electrocoagulation layer and a secondary membrane distributor, and the secondary membrane micro-electrocoagulation layer is arranged above the secondary three-dimensional mass transfer liquid collecting disc; the secondary membrane distributor is arranged above the secondary membrane micro-electrocoagulation layer. By adopting a combination structure of special fillings and special three-dimensional mass transfer liquid collecting discs, and special spraying, and a simple combination with dehumidification equipment, the comprehensive environmental protection and emission reduction effects of gravity dust removal, inertial dust removal, cyclone dust removal and the like, which cannot be achieved by the traditional dust removal process, can be achieved.

Description

Technical field: [0001] The invention relates to a double-membrane micro-electrostatic precipitator, which belongs to the technical field of special equipment for ultra-low discharge of particulate matter. Background technique: [0002] The equipment that separates the dust from the flue gas is called a dust collector or dust removal equipment. The performance of the dust collector is expressed by the amount of gas that can be processed, the resistance loss when the gas passes through the dust collector, and the dust removal efficiency. At the same time, the price, operation and Maintenance costs, service life and ease of operation and management are also important factors to consider its performance. Dust collectors are commonly used facilities in boilers and industrial production. [0003] At present, traditional methods such as gravity dust removal, inertial dust removal, cyclone dust removal, bag dust removal, electrostatic dust removal, wet dust removal, etc. can no lon...

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Problems solved by technology

[0003] At present, traditional methods such as gravity dust removal, inertial dust removal, cyclone dust removal, bag dust removal, electrostatic dust removal, wet dust removal, etc. can no longer meet the requirements of ultra-low emissions. The new wet electrostatic precipitator can capture fine particles in humid gas , can treat the flue gas to make the dust content ≤10mg / Nm 3 , but the premise is that the imported dust content is less than 50-80mg / Nm 3 , The wet electrostatic precipitator uses high-voltage DC static electricity to accelerate the deposition of smoke and dust on the surface of the anode to remove dust and liquid droplets in the smoke, but it involves high-voltage electricity above 72KV, which is dangerous to install and use, and the equipment structure is complex and difficult to operate. It is difficult to maintain and maintain, the operating cost is high, and the investment is also high. At the same time, there are strict requirements on the particle size and specific resistance of dust and liquid droplets.

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