Pulse Jet Bag Filter

  pulse-jet-dust-collector

Introduction

A baghouse (BH, B/H) or fabric filter (FF) is an air pollution control device that removes particulates out of air or gas released from commercial processes or combustion for electricity generation.[1] Power plants, steel mills, pharmaceutical producers, food manufacturers, chemical producers and other industrial companies often use baghouses to control emission of air pollutants.[2] Baghouses came into widespread use in the late 1970s after the invention of high-temperature fabrics (for use in the filter media) capable of withstanding temperatures over 350°F.[3] Unlike electrostatic precipitators, where performance may vary significantly depending on process and electrical conditions, functioning baghouses typically have a particulate collection efficiency of 99% or better, even when particle size is very smal.

In reverse-pulse-jet baghouses, individual bags are supported by a metal cage (filter cage), which is fastened onto a cell plate at the top of the baghouse. Dirty gas enters from the bottom of the baghouse and flows from outside to inside the bags. The metal cage prevents collapse of the bag. Bags are cleaned by a short burst of compressed air injected through a common manifold over a row of bags. The compressed air is accelerated by a venturi nozzle mounted at the reverse-jet baghouse top of the bag. Since the duration of the compressed-air burst is short (0.1s), it acts as a rapidly moving air bubble, traveling through the entire length of the bag and causing the bag surfaces to flex. This flexing of the bags breaks the dust cake, and the dislodged dust falls into a storage hopper below.

Reverse-pulse-jet dust collectors can be operated continuously and cleaned without interruption of flow because the burst of compressed air is very small compared with the total volume of dusty air through the collector. Because of this continuous-cleaning feature, reverse-jet dust collectors are usually not compartmentalized. The short cleaning cycle of reverse-jet collectors reduces recirculation and redeposit of dust.

These collectors provide more complete cleaning and reconditioning of bags than shaker or reverse-air cleaning methods. Also, the continuous-cleaning feature allows them to operate at higher air-to-cloth ratios, so the space requirements are lower. This cleaning system works with the help of digital sequential timer attached to the fabric filter. this timer indicates the solenoid valve to inject the air to the blow pipe.Have high collection efficiency for respirable dust.


Technical Specifications

Longer filter life

Simple Design

Low Cost

Low Noise Level and energy saving

Bag filling and emptying: animal feed, building products, additives.

Blast cleaning: metals, equipment

Conveying, mixing, blending: all powders, pellets and granulated material.

Crushing, screening, sieving: from quarried minerals to pharmaceutical powders

Grinding, polishing, finishing: metals and other materials

Foundry processes: melting and sand reclamation to fettling and finishing

Milling: food and feed raw materials, grains, pulses

Cutting and shaping: laser, plasma, mechanical sawing

Powder coating: surface finishing, decorative coatings

All Apzem Products are designed to comply with ACGIH and OSHA standards as well as local PCB Standards.

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All Apzem Products are minimum one year waranted for performance and quality.

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