CN2340512Y

CN2340512Y - Vortex separation style multi-pipe dust collector

Info

Publication number: CN2340512Y
Application number: CN 98234688
Authority: CN
Inventors: 陈国榘; 马洁梅; 陈坚; 刘民义
Original assignee: Guangzhou Institute of Energy Conversion of CAS
Current assignee: Guangzhou Institute of Energy Conversion of CAS
Priority date: 1998-07-21
Filing date: 1998-07-21
Publication date: 1999-09-29
Anticipated expiration: 2008-07-21

Abstract

The utility model relates to a vortex separation style multi-pipe dust collector, which comprises a casing, a dust collecting bucket, an inlet flue, and an outlet smoke box. The vortex separation style multi-pipe dust collector has the novel design that long cone cyclones are provided with a declined and spiral air feeding mode, the spatial arrangement structure of the cyclone groups is designed in the method that the air inlets of the cyclones can rise step by step along the direction of the flue in a slope mode, and each step ladder is provided with two rows of cyclones. The utility model can effectively raise dust-collecting efficiency; the resistance loss is reduced, and the anti-blocking ability of the cyclones is improved. When the vortex separation style multi-pipe dust collector operates under the conditions of high dust concentration or large humidity, the ash clogging can not be generated, and the dust-collecting efficiency can reach over 92%. The vortex separation style multi-pipe dust collector has the characteristics of compact structure, saved investment, and long service life.

Description

Novel cyclone separating multi-tube dust cleaner

The utility model relates to a kind of deduster of industrial fumes.

The multi-tube dust cleaner of cyclone separating is a dry-method dust-removal device commonly used both at home and abroad, is widely used in the improvement of dust such as metallurgy, chemical industry, boiler.But industrial multi-tube dust cleaner often adopts " petal " profile shaft to flow to whirlwind of gas at present, reaches 33～75 gram/rice in dust concentration ³When above, stifled easily ash, and distribution lack of homogeneity often have flue gas " crossfire " in the flue-dust retainer, cause overall efficiency of dust collection only to reach 60～80%.The beginning of the eighties, existing people changes axial flow air inlet whirlwind into tangential admission whirlwind both at home and abroad, and adjust the flow inlet angle of whirlwind by row by the flue gas direction, adopt whirlwind of minor diameter and the way of the sub-datum speed of raising whirlwind to improve efficiency of dust collection (seeing that the Soviet Union " Te п л о з н e р г e т и к a " No.1 in 1980 reaches " power technology " No.1 in 1985) simultaneously, but the deduster of this form has aggravated the wearing and tearing of whirlwind, make it to shorten greatly service life, after changing tangential admission into by axial admission simultaneously, arrange that the conplane air inlet of fourth stops the inhomogeneities that has increased resistance and aggravated air inlet mutually.

The purpose of this utility model provides a kind of novel cyclone separating multi-tube dust cleaner, to overcome the existing existing shortcoming of deduster.

Further purpose of the present utility model is to propose a kind of large-scale multi-tube dust cleaner design of handling big exhaust gas volumn that adapts to.

Structure of the present utility model, have housing, flue-dust retainer, inlet flue duct, outlet smoke box, it is characterized in that adopting the long cone whirlwind of spirally inlet air that has a down dip, the sub-internal diameter of whirlwind is φ 150～550mm, the cone-apex angle of the sub-lower end of whirlwind cone is less than 13 °, and the air inlet pipe angle of declination is 8～22 °, and the whirlwind subgroup places on the ladder bearing support, the sub-air inlet of whirlwind is raise by row along the flue gas direction be the slope layout, the slope gradient is 10～30 °.

Be laid with many row's whirlwind on the ladder bearing support in this deduster, for the layout that makes a large amount of whirlwind in the deduster more compact, make it both help air-flow and dust evenly distributes, reduce volume again, reduce investment outlay, can adopt the arrangement architecture of following whirlwind subgroup, promptly arrange the ladder bearing support of whirlwind subgroup, every grade of ladder is arranged two row's whirlwind, and makes the air inlet direction of rotation of two row's whirlwind of ladder at the same level opposite.This structure, the special large-scale deduster of handling big exhaust gas volumn that adapts to.This structure also is applicable to the transformation to old-fashioned axial flow air inlet multi-tube dust cleaner.

The utility model can add the honeycomb spoiler at the sub-ash discharging hole of each whirlwind, to overcome flue gas " crossfire ", can also open aspirating hole in lower support plate, if aspirating chamber, suction accounts for the flue gas of total cigarette amount 8～10%, incorporate the main exhaust flue into behind the flue dust in auxiliary extract system purification is bled, " crossfire " influence that can thoroughly remove smoke like this can make efficiency of dust collection improve 5～10%.In deduster import and export smoke box, also can install the flue gas flow equalizing plate additional.

The utility model adopts the steric structure of futuramic whirlwind and rational whirlwind subgroup, this whirlwind can overcome " top vortex " effectively, owing to adopt the structure of little cone-apex angle, air-flow speedup in cone is mild, help capturing fine dust, alleviate the dust bounce-back, can improve efficiency of dust collection effectively, reduce drag losses, improve the anti-blocking ability of whirlwind greatly, make high dust concentration or under the big condition of smoke moisture operation can not block up ash yet, and distribution is even, overcome " crossfire " influence of flue gas, overall efficiency of dust collection can reach more than 92%, and has wear-resistant, the characteristics of long working life.

Below be drawing explanation of the present utility model:

Fig. 1 is the structural representation of this novel cyclone separating multi-tube dust cleaner;

Fig. 2 is the view in transverse section of Fig. 1;

Fig. 3 is the sub-stereogram of the long cone whirlwind of spirally inlet air that has a down dip.

Among the figure, 1 is the long cone whirlwind of spirally inlet air that has a down dip, and 2 is the stairstepping support, and 3 is the honeycomb spoiler, and 4 is inlet flue duct, and 5 are the outlet smoke box, and 6 is flue-dust retainer, and 7 is housing, and 8 is the sub-air inlet of whirlwind.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:

This novel cyclone separating multi-tube dust cleaner (as shown in Figure 1) adopts 143 the long cone whirlwind of spirally inlet air 1 that have a down dip altogether, the sub-internal diameter of single whirlwind (being B portion internal diameter in the accompanying drawing 3) is φ 300mm, blast pipe internal diameter (being A portion internal diameter in the accompanying drawing 3) is φ 150mm, the air inlet pipe angle of declination be 11 ° 45 ', the cone-apex angle of the sub-lower end of whirlwind cone (the C portion in the accompanying drawing 3) is 12.5 °, and whirlwind adopts the cast iron materials manufacturing.The whirlwind subgroup lined up 11 * 13 array (as shown in Figure 2), be arranged on the ladder bearing support, every grade of ladder is arranged two row's whirlwind, the sub-air inlet direction of rotation of two row's whirlwind of ladder at the same level is opposite, and its air inlet is not also blocked mutually towards the flue gas direction, and the air inlet of whirlwind on the level ladder of back is higher than prime, be slope shape, ramp rate is 12 °, also adds honeycomb spoiler 3 at the sub-ash discharging hole of each medial rotation, and the direction of arrow in the accompanying drawing is flue gas flow direction.This deduster can be used for handling 16 * 10 ⁴m ³The exhaust gas volumn of/h, efficiency of dust collection is more than 92%.

Claims

1. cyclone separating multi-tube dust cleaner, have housing, flue-dust retainer, inlet flue duct, outlet smoke box, it is characterized in that adopting the long cone whirlwind of spirally inlet air that has a down dip, the sub-internal diameter of whirlwind is φ 150～550mm, the cone-apex angle of whirlwind is less than 13 °, and the air inlet pipe angle of declination is 8～22 °, and the whirlwind subgroup places on the ladder bearing support, the sub-air inlet of whirlwind is raise by row along the flue gas direction be the slope layout, the slope gradient is 10～30 °.

2. multi-tube dust cleaner according to claim 1 is characterized in that arranging the ladder bearing support of whirlwind subgroup, and every grade of ladder is arranged two row's whirlwind, and the air inlet direction of rotation of two row's whirlwind of ladder at the same level is opposite.

3. multi-tube dust cleaner according to claim 1 is characterized in that installing honeycomb spoiler in the said flue-dust retainer.

4. multi-tube dust cleaner according to claim 1 is characterized in that being furnished with the flue gas flow equalizing plate in the said import and export smoke box.