CNMC type countercurrent pulse back blowing bag filter

CNMC type countercurrent pulse back blowing bag filter

The CNC counter current pulse counter blowing bag dust collector has the advantages of large air volume, small footprint, low filter bag wear, good purification efficiency, long service life, easy replacement of filter bags, and convenient maintenance. In recent years, this dust collector has been widely promoted and applied in various provinces and cities in China, and has been replaced by users.

The CNC counter current pulse back blowing bag dust collector adopts high-pressure and high flow pulse valve jet dust removal technology, which can collect the above-mentioned dust from a large amount of micro powder gas. Dust collectors are widely used in dust treatment in the cement industry and have good application prospects in industries such as chemical, metallurgical, steel, and power.

Composed of CNMC counter current pulse back blowing bag filter:

Numerical Control Counter Current Pulse Backblowing Bag Dust Collector; It consists of filter bag components, flow guide device, pulse jet system, ash discharge system, control system, offline protection system, box, etc.

1. The connection design of the integrated filter bag frame, bag, and hanging bag plate adopts a self-locking device, which is easy to install and replace, and can extend the service life of the filter bag. The filter bag adopts polyphenylene sulfide needle punched felt.

2. The diversion device adopts an air intake method, and the designed flue gas distribution device can distribute dust gas, separate large-diameter particles, avoid dust gas flushing the filter bag, and improve the efficiency and service life of the entire dust removal device.

3. The pulse jet system consists of a recoil header, electromagnetic pulse valve, pressure joint, nozzle tube, bracket, etc. Each filter bag has a compressed air nozzle tube at the top. Generally, each row of filter bags is set to pulse back blow once every 10 seconds, and the timer starts the solenoid valve once to spray pulse back air into the filter bags for dust removal.

4. The control system mainly consists of a pulse jet controller, BMC computer control cabinet, thermal resistance thermometer, static pressure measuring point, material level indicator, and measuring components.

5. The offline protection system is mainly composed of bypass valve, spray cooling system, thermometer, pressure detection device and filter bag leakage detection device. A thermometer is installed at the inlet of the dust collector. When the flue gas temperature is too high or the boiler tail is reburning, start the spray cooling system and spray water for emergency cooling to avoid burning the filter bag. If the cooling system cannot reduce the flue gas temperature to the normal operating range of the bag filter, or if boiler ignition and low load require fuel injection combustion, in order to avoid direct oil fume entering the dust collector, causing the filter cloth powder layer to harden and affecting the normal operation of the dust collector, the bypass valve should be opened, and the flue gas should be directly discharged through the bypass flue to avoid damaging the filter bag. Install a filter bag leak detection device in the clean air chamber to promptly alert when the filter bag is damaged.

The CNC counter current pulse back blowing bag filter adopts a pulse back blowing dust collector, and its electrical control adopts a sequence controller, which has excellent performance. Widely used in metallurgy, chemical industry, machinery, non-ferrous casting, mining, asphalt concrete industry, cement, power, carbon black, grain processing and other working conditions for enterprises to purify and recover dust and gas at room temperature and high temperature.

The working principle of CNMC counter current pulse back blowing bag filter:

The dusty gas enters the bag filter through the inlet and is filtered through the outer surface of the filter bag. The purified gas flows from the filter bag to the upper small room and is discharged from the air outlet through a long Venturi tube. When the dust adsorbed on the outer surface of the filter bag reaches a certain value, the program controls pulse blowing, that is, high-pressure air enters the long tube, purified gas enters the filter bag, forms a large pressure difference, removes dust, and achieves the purpose of dust removal, making the resistance of the entire equipment and system stable. The blown dust falls into the bottom of the lower box and is discharged and recovered by the screw conveyor.

The CNMC counter current pulse back blowing bag filter has the following characteristics:

1. The CNC counter current pulse back blowing bag filter adopts the pulse back blowing dust removal method, which is a good dust removal effect in China. The box on the device is divided into 18 unconnected small rooms and connected to a long Wen tube. Using program control pulses to achieve the purpose of dust removal. Cancel the small Venturi tube at the top of the spray tube and filter bag, with a simple structure and easy operation and maintenance.

2. The CNC counter current pulse counter blowing bag filter divides the flower plate edge of the upper box into conical holes, forming a smooth surface contact with the filter bag, with good sealing performance, and reducing wear between the hole edge and the filter bag.

The CNMC countercurrent pulse back blowing bag filter has a simple and reasonable structure, occupies a small area, and can be installed indoors and outdoors.

Compared with other domestic dust collectors, the CNC counter current pulse back blowing bag dust collector has the advantages of large processing air volume, low system resistance, and wide application range (room temperature, high temperature dust concentration)

CNMC type countercurrent pulse back blowing bag filter