A filter bag dust collector with self-circulation dust removal device

Abstract

A filter bag type dust collector with a self-circulation dust removal device, relating to a dust collector, the dust collector includes a basic support, an air flow uniform distribution and flow guide device, a filter bag room, a clean air room, a filter assembly, a self-circulation Ash cleaning system, ash hopper, electrical control system, also includes insulation layer, platform, stairs, pre-coating system; the air inlet is equipped with airflow uniform distribution and flow guide devices, and the bag area is equipped with forward and upward airflow channels, The filter bags are arranged in groups in a rectangular room, and several filter bag openings are pressed together with a steel plate through bolts, so that the filter bags are firmly stuck in the hole of the flower plate. The filter bag holes are made on the flower plate, and the orifice plate is smooth without burrs. , The filter bag forms a double sealing structure on the upper part of the flower plate and the inner edge of the flower plate hole. The dust collector adopts the low-pressure air blowing generated by the centrifugal fan, and the airtight and non-leakage dust removal can not only ensure the blowing effect, but also prevent the filter bag from being slightly damaged, and the operation is safe and reliable. , to achieve the purpose of dust removal.

Description

technical field [0001] The invention relates to a dust collector, in particular to a filter bag type dust collector with a self-circulation dust removal device. Background technique [0002] Filter bag dust collector is the mainstream technology for flue gas dust removal in coal-fired power plant boilers. It is composed of ash hopper and electrical control system. [0003] The working principle of the filter bag dust collector is: the dusty flue gas from the boiler enters the filter bag dust collector through the flue of the flue gas inlet, and under the negative pressure of the boiler induced draft fan installed behind the dust collector, the dusty flue gas passes through and The air intake bell of the dust collector enters the bag filter, and passes through the air distribution plate of the filter bag filter to ensure the flow distribution of the flue gas before entering the filter bag bundle, avoiding the local dust-laden gas flow rate that is too fast to cause damage to...

AI Technical Summary

Problems solved by technology

Filter bag service life is reduced, usually no more than 3 years

[0012] d. Due to the installation of the nozzle above the filter bag for the blown dust collector, it is extremely inconvenient to replace the filter bag and bag cage

[0013] e. The dust collector of line blowing adopts a circular filter bag to occupy a large area and the volume of the dust collector is large; although the dust collector of the rotary jet is a flat filter bag, it adopts an overall circular arrangement, and the volume of the four corners is wasted. The volume is also large;

[0014] f. The most critical thing is that the purge air source enters the dust collector, which increases the load of the induced draft fan of the boiler and increases the energy consumption

And produce fluctuating load (large when purging, small when not purging)

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