CN2144016Y

CN2144016Y - Cyclone throat backflow multi-stage wet duster

Info

Publication number: CN2144016Y
Application number: CN 93202139
Authority: CN
Inventors: 秦国文
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-19
Filing date: 1993-01-19
Publication date: 1993-10-20
Anticipated expiration: 2003-01-19

Abstract

The utility model relates to a cyclone throat backflow multi-stage wet duster, comprising a pressure spray water filling pipe, a fume tangential inlet pipe, a cylinder body provided with a dust emitting hole on the lower part, and a fume tangential outlet pipe. The pressure spray water filling pipe is directly installed on the fume tangential inlet pipe, and the top part of the cylinder body is sequentially connected with a right cone body, a throat pipe, an inversed cone body, an upper cylinder body provided with an overflow water filling pipe, and the fume tangential outlet pipe. The utility model solves the defects that an existing wet duster device is too big, and water consumption is too high. The utility model has the advantages of small size, good dust removing effect, low water consumption and low investment expenditure.

Description

Cyclone throat backflow multi-stage wet duster

The utility model relates to and a kind ofly separates the device of dispersed granules with liquid as release agent from gas, is the multistage wet dust catcher of a kind of whirlwind aditus laryngis adverse current specifically.

Venturi scrubber is existing a kind of efficient wet dust catcher, and when ash-laden gas passed through Venturi tube, the water droplet that flue gas and pressure spray into was along equidirectional parallel the flowing of tubular axis, and cigarette speed sprays into the water yield greatly to 0.2 liter/mark rice up to 50～80 meter per seconds ³The time, water droplet ability and flue dust condense preferably.After Venturi tube, flue gas decelerates to 12～25 meter per seconds and enters and separate dedusting in the cyclonic water film deduster.Because the cigarette speed of Venturi tube is too high, need to slow down through long anemostat, make equipment huger, flue gas resistance is also higher; In addition, the flue gas that has the dust-laden water droplet enters from bottom flue gas tangential inlet pipe and rotates the straight circular whirlwind moisture film cylindrical shell upwards, the dust-laden water droplet is thrown to the wall moisture film, need consume a large amount of water because of forming uniform moisture film around the high great circle wall, its water consumption generally up to 0.3～0.5 liter/mark rice ³, but having only one deck flue gas of close wall to contact from bottom to top with moisture film, a large amount of water is not fully used and is just discharged, cause the waste of water, and could discharge after these dust-containing waters will be handled, just need a big cover auxiliary device such as ash settling basin, water pump, increase construction investment again.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part and a kind of good dedusting effect is provided, water consumption is low, equipment volume is little and can makes the lower multistage wet dust catcher of whirlwind aditus laryngis adverse current of engineering investment cost.

For finishing above-mentioned purpose, the technical solution that the utility model provides is: the multistage wet dust catcher of a kind of whirlwind aditus laryngis adverse current, comprise: the press atomization filler pipe, flue gas tangential inlet pipe, the below is provided with the cylindrical shell and the tangential outlet of flue gas of dust-exhausting port, its special character is: described press atomization filler pipe is directly installed on the flue gas tangential inlet pipe, the top of described cylindrical shell is connected with the normal cone body in proper order, the aditus laryngis pipe, inverted cone, be provided with the upper shell and the tangential outlet of described flue gas of overflow filler pipe, constitute secondary wet dust catcher with whirlwind aditus laryngis adverse current.

Can set up the middle cylindrical shell that is provided with the overflow filler pipe, normal cone body, aditus laryngis pipe, the inverted cone that one or more groups connects in proper order between inverted cone in the above-mentioned technical solution and the upper shell.Thereby constitute three grades to multistage wet dust catcher with whirlwind aditus laryngis adverse current.

The utility model can be built by laying bricks or stones by granite, be coated with the wear-and corrosion-resistant material in the welded steel plate makes, and also can be to be formed by iron casting, or adds the acid-proof wear-proof liner by the armored concrete shell and make.

The accompanying drawing drawing is described as follows:

Fig. 1 is the sectional structure chart of first preferred embodiment of the utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the B-B cutaway view of Fig. 1;

Fig. 4 is the C-C cutaway view of Fig. 1.

Fig. 5 is the sectional structure chart of second preferred embodiment of the utility model.

Referring to Fig. 1～4, this deduster has the cylindrical shell 3 that a below is provided with dust-exhausting port 10, flue gas tangential inlet pipe 1 is housed on the sidewall of cylindrical shell 3, press atomization filler pipe 2 is directly installed on the flue gas tangential inlet pipe 1, and the top of cylindrical shell 3 is connected with normal cone body 4, aditus laryngis pipe 5, inverted cone 6, the upper shell 8 that is provided with overflow filler pipe 7 and the tangential outlet 9 of flue gas in proper order.

Ash-laden gas enters cylindrical shell 3 rotations through flue gas tangential inlet pipe 1 during work; press atomization filler pipe 2 ejection diameter 100～200 microns fine liquid particles and flue gases also are advanced into cylindrical shell 3 rotations; because the influence and the water droplet of 5 pairs of air-flows of aditus laryngis pipe coagulate the increase of conducting oneself with dignity behind the attached grit; flue gas and water droplet produce the radial counterflow motion; water droplet progressively rotates through the ash-laden gas fluid layer and gets rid of to wall; be equivalent to grit through the water droplet space of gathering; always there are some grits can contact cohesion with water droplet; especially for less than 5 microns thin dirt; the rotating centrifugal method is difficult to remove, and this method then is more effective.The flue gas flow rate of flue gas otch in inlet tube 1 is 8～20 meter per seconds, and cylindrical shell 3 is cigarette speed 1～10 meter per second upwards, aditus laryngis pipe cigarette speed 6～40 meter per seconds.Upper shell 8 is a dryer section, and purpose is the water droplet of removing as far as possible in the flue gas, reduces the humidity of outlet flue gas, and the cigarette speed of upper shell 8 is less than 6 meter per seconds.Flue gas after the dedusting is discharged through the tangential outlet 9 of flue gas.

Referring to Fig. 5, if at inverted cone 6 of the present utility model, with one or more groups middle the cylindrical shell 12 that is provided with overflow filler pipe 11, normal cone body 13, aditus laryngis pipe 14, inverted cone 15 that connects in proper order is installed between the upper shell 8, can also constitute three grades and arrive multistage wet dust catcher with whirlwind aditus laryngis adverse current.

In conjunction with the foregoing description as can be seen, the utility model advantage compared to existing technology is: have two-stage or multistage dedusting effect, in first order dedusting, by the fine liquid particles of press atomization filler pipe 2 ejection and flue gas by flue gas tangential inlet pipe 1 and be advanced into cylindrical shell 3 rotations, flue gas will pass through the less aditus laryngis pipe 5 of bore, certainly will inwardly rotate up, water droplet is with always having dirt and water to bump in the equidirectional rotary movement of flue gas, be condensed into heavier water droplet and produce big slightly centrifugal force and gravity, to outer ring and moving downward, though the tangential motion direction of flue gas and water droplet together, but the radial motion direction is opposite, water droplet has more opportunity and dirt to collide, and has improved efficiency of dust collection greatly; In the dedusting of the second level, from aditus laryngis pipe 5 to overflow filler pipe 7, the water that overflows forms moisture film on inverted cone 6, some flue dust of the same adhesive aggregation of whirlwind moisture film in these moisture films and the cylindrical shell, take away the dust-laden water droplet that is thrown to wall, when it flow to the aditus laryngis pipe, because of aditus laryngis pipe caliber is little, the rotation flue gas was gone out the aditus laryngis pipe with higher speed, the axial adverse current of cigarette G﹠W intersects, water is brought into by this flue gas in the air-flow of rotation, contacts cohesion with flue dust, is thrown to the inverted cone wall again, again flow to the aditus laryngis pipe, back and forth, when the wall moisture film reached certain thickness, flue gas can only be taken away wherein a part of water, another part water flows down from the aditus laryngis pipe, it is the same with the water droplet of flue gas tangential inlet pipe pressure ejection, is the radial counterflow motion with flue gas, is thrown to wall after contacting more dirt.Because of the water yield of press atomization filler pipe is little, the not enough moisture film that forms has only and could and carry dust from dust-exhausting port 10 discharges at the wall formation moisture film of cylindrical shell after the water that flows down from the aditus laryngis pipe mixes.Because of the water yield of press atomization filler pipe and overflow filler pipe needs is little, can reduce the total water consumption of whole deduster, its water consumption only is 1/3～1/6 of existing venturi scrubber.In addition, contact, thereby, then can in dedusting, remove sulfur dioxide if make the water of adding keep alkalescence owing to the utility model flue gas in dust removal process can fully mix with water droplet.

Claims

1, the multistage wet dust catcher of a kind of whirlwind aditus laryngis adverse current, comprise: press atomization filler pipe, flue gas tangential inlet pipe, below are provided with the cylindrical shell and the tangential outlet of flue gas of dust-exhausting port, it is characterized in that: described press atomization filler pipe is directly installed on the flue gas tangential inlet pipe, and the top of described cylindrical shell is connected with normal cone body, aditus laryngis pipe, inverted cone, the upper shell that is provided with the overflow filler pipe and the tangential outlet of described flue gas in proper order.

2, the multistage wet dust catcher of whirlwind aditus laryngis adverse current according to claim 1 is characterized in that: between described inverted cone and upper shell the middle cylindrical shell that is provided with the overflow filler pipe, normal cone body, aditus laryngis pipe, the inverted cone that one or more groups connects in proper order is housed.

3, the multistage wet dust catcher of whirlwind aditus laryngis adverse current according to claim 1 and 2, it is characterized in that: this deduster is to be built by laying bricks or stones, be coated with the wear-and corrosion-resistant material in the welded steel plate and constitute by granite, also can be by iron casting or adds the acid-proof wear-proof liner by armored concrete and constitute.