CN1657136A - Dry microporous filter dust collector - Google Patents

Abstract

A dry micropore-filtering duster is composed of top cover, the upper and middle case bodies, dust hopper and its supporter, dust discharging valve under dust hopper, the patterned plate with the uniformly arranged circular holes between upper and middle case bodies, and the micropore filtering ceramic tubes for said circular holes on patterned plate. It has high dusting effect and high mechanical strength.

Description

Dry microporous filter dust collector

technical field

The invention relates to a device for removing harmful gases such as dust and particles in flue gas by dry microporous filtration, which belongs to purification equipment for boiler, kiln flue gas and industrial waste gas in the field of environmental protection.

Background technique

Dry dust removal technology, commonly used bag filter method for dust removal, it has high dust removal efficiency, stable and reliable performance and is widely used in dust removal. The filter material is the core part of the bag filter, and the inorganic fiber filter material with good filtration performance, good chemical stability and low price is usually used. The working principle of the bag filter is that the dusty gas enters the filter bag from the lower part, and when passing through the pores of the filter material, the dust is captured on the filter material, and the purified gas is discharged from the exhaust port, so as to achieve the purpose of dust removal. However, with the actual application, the weakness of fiber filter material is also exposed. Its temperature resistance, wear resistance and corrosion resistance are poor, and it has the disadvantages of clogging and easy aging. Meet the requirements of dust removal.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of existing dry dust collectors and provide a dry microporous filter with long service life, high mechanical strength, low price, high dust removal efficiency, easy cleaning, temperature resistance and corrosion resistance. Dust collector, the device can not only adopt the traditional mechanical rotary back blowing or pulse back blowing method, but also can use the water washing method in the dust cleaning process.

The technical solution adopted to solve the above technical problems is: a dry microporous filter dust collector, including a top cover, an upper box, a middle box, an ash hopper, a bracket, and an upper equalizer between the upper and middle boxes. A flower plate with a round hole is arranged, a dust discharge valve is set under the ash hopper, the ash hopper is supported by a bracket, the middle box is placed on the ash hopper, the upper part of the ash hopper is provided with an air inlet, and the upper box is provided with a The exhaust port is characterized in that an upper-opening microporous ceramic filter tube is provided at the position of the round hole corresponding to the flower plate in the middle box, and the upper opening of the microporous ceramic filter tube communicates with the inner cavity of the inner cavity of the upper box, The microporous ceramic filter tube seals the round hole on the flower plate.

The invention has the advantages of high purification efficiency for dusty gas and convenient use. The use of porous ceramic filter material determines that the device can not only adopt the traditional mechanical rotary backflush or pulse backflush method, but also can use the water washing method during the dust cleaning process. Therefore, the device has long service life, high mechanical strength, low price, high dust removal efficiency, easy cleaning, temperature resistance, corrosion resistance, convenient use and stable performance.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the front view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a schematic diagram of the structure of the microporous ceramic filter tube.

Fig. 4 is a structural schematic diagram showing the installation relationship between the microporous ceramic filter tube and the flower plate.

Each label in the figure means:

1. Top cover 2. Upper box body 21. Exhaust port 3. Middle box body

4. Ash bucket 41. Air inlet 5. Bracket 6. Dust discharge valve

7. Flower plate 8. Microporous ceramic filter tube 81. Upper opening 82. Flange

9. Asbestos rope gasket

Detailed ways:

As shown in Figures 1 to 4, the dry-type microporous filter dust collector of the present invention includes a top cover 1, an upper box body 2, a middle box body 3, an ash bucket 4, a bracket 5, and upper and middle box bodies 2 and 3. There is a flower plate 7 with evenly distributed round holes on it, a dust discharge valve 6 is provided under the ash hopper 4, the ash hopper 4 is supported by a bracket 5, the middle box 3 is placed on the ash hopper 4, and the ash hopper 4 The upper part is provided with an air inlet 41, the upper box body 2 is provided with an exhaust port 21, and the upper opening type microporous ceramic filter tube 8 is provided in the middle box body 3 corresponding to the upper round hole of the flower plate 7, and the microporous ceramic filter tube 8 The upper opening 81 communicates with the inner cavity of the upper box body 2, and the microporous ceramic filter tube 8 seals the round hole on the flower plate 7. In the embodiment shown in accompanying drawing 3, 4, the upper opening 81 place of microporous ceramic filter tube 8 is provided with flange 82, by this flange 82, under the gravitational action of microporous ceramic filter tube 8 self, microporous ceramic filter tube 8 Porous ceramic filter pipe 8 is placed on flower plate 7 . An asbestos rope sealing gasket 9 is arranged between the microporous ceramic filter pipe 8 and the flower plate 7 . The microporous ceramic filter tube 8 can be an alumina reinforced microporous ceramic filter tube or a silica reinforced microporous ceramic filter tube or a silicon-free special microporous ceramic filter tube. Its cross-section can be circular, rectangular or elliptical, and the pore diameter of the filter material is 10-400um.

The working process of the present invention is as follows: the dust-laden gas enters the middle box body 3 through the air inlet 41, and the dust is trapped on the appearance of the microporous ceramic filter tube 8 when passing through the micropores of the filter material of the microporous ceramic filter tube 8. Fall into the ash hopper 4 under the action, and the purified gas is discharged from the exhaust port 21 of the upper box body 2 through the filter material pores and the upper opening 81 of the microporous ceramic filter tube. Since the filter material in the present invention is a microporous ceramic tube, the method of mechanical rotary backflushing or pulse backflushing can be used, and the method of washing with water can also be used.

Claims (8)

1. A dry microporous filter dust collector, comprising a top cover (1), an upper box (2), a middle box (3), an ash hopper (4), a bracket (5), an upper and a middle box ( 2) and (3) are provided with a flower plate (7) with evenly distributed round holes on it, and a dust discharge valve (6) is provided under the ash hopper (4), and the ash hopper (4) is supported by the support (5) support, the middle box (3) is placed on the ash hopper (4), the upper part of the ash hopper (4) is provided with an air inlet (41), and the upper box (2) is provided with an air outlet (21), It is characterized in that an upper opening type microporous ceramic filter tube (8) is arranged in the position corresponding to the upper round hole of the flower plate (7) in the middle box (3), and the upper opening (81) of the microporous ceramic filter tube (8) ) is communicated with the inner cavity of the upper box body (2), and the microporous ceramic filter tube (8) seals the circular hole on the flower plate (7). 2. The dry microporous filter dust collector according to claim 1, characterized in that a flange (82) is provided at the upper opening (81) of the microporous ceramic filter tube (8), through which the flange (82) The microporous ceramic filter pipe (8) is placed on the flower plate (7). 3. The dry microporous filter dust collector according to claim 2, characterized in that an asbestos rope gasket (9) is provided between the microporous ceramic filter tube (8) and the flower plate (7). 4. The dry microporous filter dust collector according to claim 2 or 3, characterized in that the microporous ceramic filter tube (8) is an alumina reinforced microporous ceramic filter tube. 5. The dry microporous filter dust collector according to claim 2 or 3, characterized in that the microporous ceramic filter tube (8) is a silica-reinforced microporous ceramic filter tube. 6. The dry microporous filter dust collector according to claim 2 or 3, characterized in that the microporous ceramic filter tube (8) is a special microporous ceramic filter tube not containing silicon. 7. The dry microporous filter dust remover according to claim 2 or 3, characterized in that the cross section of the microporous ceramic filter tube (8) is circular, rectangular or elliptical. 8. The dry-type microporous filter dust collector according to claim 2 or 3, characterized in that the micropore diameter of the filter material of the microporous ceramic filter tube (8) is 10-400um.

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