CN2277489Y

CN2277489Y - Boiler smoke desulphurizing dust remover

Info

Publication number: CN2277489Y
Application number: CN 96228280
Authority: CN
Inventors: 董鸿聚
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-28
Filing date: 1996-06-28
Publication date: 1998-04-01
Anticipated expiration: 2006-06-28

Abstract

The utility model relates to a smoke gas desulphurizing dust remover for boilers, which belongs to the smoke gas separating device, comprising a nozzle, a water washing chamber, an inner cylinder, an outer cylinder and a conic body. The utility model is characterized in that the nozzle is arranged on the vertical direction of the smoke gas inlet of the water washing chamber; the water washing chamber is arranged above the outer cylinder, wound around the inner cylinder, and communicated with a centrifugal separating chamber which is formed by the interval space of the inner and the outer cylinders. In addition, a water blocking tongue can be additionally arranged on the forming point of a disposable water film, a baffle plate is additionally arranged on the smoke gas running direction of the outlet point of the water washing chamber, and the lower part of the inner cylinder is additionally provided with a tangential-seam-shaped gas collecting opening. The desulphurizing and dust removing efficiency of the utility model is obviously improved.

Description

The boiler fume desulfurizing and dedusting device

The utility model relates to a kind of flue gas separation unit, especially a kind of boiler desulfurating dust removing device for flue gas.

Boiler has dry collector and water dust scrubber with desulfurating dust removing device for flue gas at present, it is on cylindrical shell top independent water-distributing device to be set that the moisture film of existing water dust scrubber forms, and enters the mouth place spray nozzle is set separately, a part of water spray, another part water cloth film respectively is a kind of function; Spray direction and flue gas are in the same way; Mix by Venturi tube, resistance is big, and flue gas and water are short time of contact; Flue gas is advanced in the bottom, and rotation separates rises, and flue gas is drained from top, is anti-band water, and the rate of climb is low, so rotary speed is slow, and inferior separating effect; Existing equipment is built by laying bricks or stones by granite, and cost is higher, and its investment proportion of miniature boiler adapted is bigger than normal, and the building stones rough surface, and moisture film is inhomogeneous, is unfavorable for dedusting; Used sewage dust removing effects is poor, and desulfurizing function is low.

The purpose of this utility model is to overcome the defective that above-mentioned prior art water dust scrubber exists, and provides a kind of water-distributing device that defaults only to establish the boiler fume desulfurizing and dedusting device that nozzle, nozzle spray direction efficiency of dust collection vertical with the flue gas airintake direction, that flue gas is entered by top significantly improve.

Technical solution of the present utility model is as follows:

The utility model includes the washing chamber that spraying is used with the moistening dust of nozzle, band smoke inlet, the inner core of getting rid of the band gas collection mouth of clean flue gas, the urceolus that divides separable flue gas and dust, compile the sewage cone after the dedusting, the inner core of lower end band gas collection mouth is positioned at the positive center of urceolus, cone is connected the urceolus below, its special character is that described nozzle is arranged on and washes on the smoke inlet vertical direction of chamber, and the washing chamber is positioned at the urceolus top, communicates around inner core and with the centrifugation chamber of inner/outer tube clearance space formation.

The utility model is only established nozzle, and there is not independent water-distributing device, recirculated water is all sprayed by nozzle, constitute the process of laterally washing flue gas for the first time, can establish the nozzle that the parallel staggered interval of two rows is provided with, naturally form a moisture film behind the washing flue gas, under the same water yield situation, can further improve the contact area of water and flue gas.

For improving the adsorption effect of dust and water better, once the dash tongue is established in moisture film formation place on the washing chamber interior walls, one time moisture film impacts into tiny water droplet at dash tongue place, the flow of flue gas that increases along with this place, get rid of to outer tube inner wall by inertia, constitute the process of laterally washing flue gas for the second time, on outer tube inner wall, form the secondary moisture film.

Be provided with dividing plate in washing exit, chamber and flue gas traffic direction, make flue gas and water better mixing, and guarantee to enter the flue gas high speed of centrifugation chamber inlet.

Flue gas and aqueous mixtures enter the centrifugation chamber, at this moment, close dirt sulfur-bearing water droplet and not dust-laden sulfur-bearing water droplet be thrown toward that outer tube inner wall forms moisture film and rotation rotates.The flue gas then centrifugation chamber between inner core and urceolus is done high speed rotary motion, dust-laden sulfur-bearing water droplet tiny in the flue gas reaches the moisture film that also is not thrown toward outer tube inner wall by moistening superfine little dust under centrifugal action gradually, adsorbed and unable disengaging again by this moisture film, the flue gas that the inner tank theca place is promptly pressed close at last flue gas pivot position has become clean flue gas.

The effect of inner core gas collection mouth is exactly under the situation that as far as possible alleviates the interference of flue gas being rotated disengaging movement, collect the clean flue gas and the discharge of promptly pressing close to the inner tank theca place in the pivot position, be provided with the seam shape gas collection mouth of tangential even setting in the inner core bottom for this reason, make the clean flue gas of making high speed rotary motion change direction a little and can enter inner core, establish circular gas collection mouth at interior tube bottom, major part is got rid of the remaining fraction flue gas in back by tangential seam shape gas collection mouth drains, though this place's flue gas has bigger direction to change, but because of round mouth less, far away from outward flange, and the gas collection amount is less, so less to the whole interference that rotatablely moves.

For significantly improving sulfur limitation effect, the spraying buck so that with flue gas in the sulphur class play neutralization reaction and generate the salt discharge.Be to reduce cost, improve the equipment corrosion resistance, equipment uses the bonding or stainless steel material of ceramic to be welded, and equally also can adopt other material such as granite to make.

The utility model spray direction is vertical with airintake direction, water and flue gas full contact, and the dust tack is good; Flue gas is entered by top, and rotation also descends, and with the water (flow) direction unanimity, separates the back clean flue gas and rises, is difficult for band water, rotary speed height, good dedusting effect, and the entire equipment efficiency of dust collection significantly improves.Parallel interval is provided with two row's nozzles, can further improve the contact area of water and flue gas, and abundant moistening dust improves efficiency of dust collection; The setting of dash tongue can constitute the laterally flushing once more to flue gas, further improves efficiency of dust collection again; Being provided with of tangential seam shape gas collection mouth rotatablely moves interference less to flue gas, and resistance is little, can effectively improve smoke discharging effect; The spraying of employing buck can significantly improve sulfur removal effectiveness.

Accompanying drawing and drawing explanation:

Fig. 1-the utility model most preferred embodiment vertical view;

Fig. 2-the utility model most preferred embodiment front view;

The B-B cutaway view of Fig. 3-Fig. 2;

The A-A cutaway view of Fig. 4-Fig. 1;

The C-C cutaway view of Fig. 5-Fig. 3;

The D-D cutaway view of Fig. 6-Fig. 4;

Fig. 7-the utility model washing chamber action principle schematic diagram.

Among the figure: 1 nozzle, 2 smoke inlets,

washing chambers

3,4 dash tongues, 5 inner cores, 6 urceolus, 7 dividing plates,

centrifugation chambers

8,9 gas collection mouths, 10 seam shape gas collection mouths, 11 outlets of sewer, 12 water inlets, 13 exhanst gas outlets, 14 cones, 15 supporting seats.

Provide most preferred embodiment of the present utility model below in conjunction with accompanying drawing: the washing chamber 3 of band smoke inlet 2 is positioned at urceolus 6 tops, communicate around inner core 5 and with the centrifugation chamber 8 of inner/outer tube clearance space formation, the parallel staggered spaced apart nozzle 1 of two rows is set on the vertical direction of washing chamber smoke inlet 2, once moisture film formation place is provided with dash tongue 4 on 3 inwalls of washing chamber, at the parallel dividing plate 7 that is provided with of washing exit, chamber flue gas traffic direction, be provided with the seam shape gas collection mouth 10 of tangential even setting in inner core 5 bottoms, circular gas collection mouth 9 is established in inner core 5 bottoms, cone 14 tops link to each other with urceolus 6, the bottom is provided with outlet of sewer 11, is used to get rid of the sewage after the washing.

The utility model can adopt ceramic member bonding, and also available Stainless Steel material welding can reach and the same life-span of boiler.

During use, sewage pipe is connected with outlet of sewer need do a trap, enters in case extraneous air is inhaled the interior negative pressure of deduster, thereby influences efficiency of dust collection.

Dedusting institute water is for adding buck, is to add quick lime by boiler blowdown water to mix, and uses the alkaline water purpose to be: 1. can reduce the surface tension of water, making it in the easier seizure flue gas dust or moistening dust increases the dust quality and is convenient to centrifugation; 2. the bases in the alkaline water very easily generates harmless salt with pernicious gas generation chemical reactions such as sulfur in smoke, sulfur trioxides, gets rid of with sewage, reaches real sulphur removal purpose; 3. can prevent corrosion.

With reference to figure 7, its course of work and principle are: by water pump buck is squeezed into water inlet 12 of the present utility model, the nozzle 1 that is provided with by the parallel staggered interval of two rows ejects the tiny water droplet of atomizing, go to the spray of B point high speed, simultaneously, boiler smoke is sprayed at a high speed by smoke inlet 2, staggered with high speed water mist, flue gas is by laterally bump, flushing for the first time, in the flue gas pernicious gas such as part sulfur dioxide, sulfur trioxide adsorbed by water droplet or with water in the bases reaction, being caught of having of part dust by water droplet, have by water droplet moistening after still with flow of flue gas.Water smoke is subjected to the high speed flue gas to impact actual falling point in C, between the D, flow forward with flue gas along inner core 5 outer walls, when arriving the D point, run into dash tongue 4, current can not continue adherent flowing, and because the dash tongue has taken the flow area of flue gas herein, this place's flue gas is increased, flue gas impacts into tiny water droplet with the moisture film on the dash tongue again at this place, under effect of inertia, get rid of to outer tube inner wall, form the process of laterally washing flue gas for the second time, the sulfur dioxide that is not adsorbed as yet in the flue gas, sulfur trioxide reaches and can be adsorbed once more by moistening dust, catching reaction or by moistening.

Flue gas is through twice laterally flushing, and most sulfur dioxide, the sulfur trioxide neutralization reaction that is captured becomes harmless salt to remove with sewage, and most dusts are by moistening, absorption, and own wt has had increase, helps next step centrifugation.

Set dividing plate 7 enters centrifugation chamber 8 at a high speed to flue gas through washing 3 exits, chamber, this moment dust-laden sulfur-bearing water droplet and not the sulfur-bearing water droplet be thrown toward gradually that outer tube inner wall forms water membrane and rotation flows downward, flue gas is then made high speed rotary motion between inner/outer tube, in the flue gas tiny dust-laden sulfur-bearing water droplet and not by moistening fine dust also under centrifugal action, be thrown toward the moisture film that outer tube inner wall flows gradually, caught by moisture film, adsorb and the unable moisture film that breaks away from again, the flue gas that the inner tank theca place is promptly pressed close in the centre of flue gas rotation has become clean flue gas, is discharged by the tangential seam shape gas collection mouth of inner core 5 bottoms and the gas collection mouth 9 of bottom.

Claims

1, the boiler fume desulfurizing and dedusting device, include spraying nozzle (1), the washing chamber (3) that the moistening dust of band smoke inlet (2) is used, the inner core (5) that the eliminating clean flue gas of band gas collection mouth (9) is used, the urceolus (6) that divides separable flue gas and dust, compile sewage cone (14), inner core (5) is positioned at the positive center of urceolus (6), cone (14) is connected urceolus (6) below, it is characterized in that described nozzle (1) is arranged on and washes on the vertical direction of chamber smoke inlet (2), washing chamber (3) is positioned at urceolus (6) top, communicate around inner core (5) and with the centrifugation chamber (8) of inner/outer tube clearance space formation.

2,, it is characterized in that described nozzle (1) is that the parallel staggered interval of two rows is provided with according to the described boiler fume desulfurizing and dedusting device of claim 1.

3,, it is characterized in that establishing dash tongue (4) in last moisture film formation place of described washing chamber (3) inwall according to the described boiler fume desulfurizing and dedusting device of claim 1.

4,, it is characterized in that being provided with dividing plate (7) at washing exit, chamber (3) flue gas traffic direction according to the described boiler fume desulfurizing and dedusting device of claim 1.

5,, it is characterized in that being provided with the seam shape gas collection mouth (10) of tangential even setting in described inner core (6) bottom according to the described boiler fume desulfurizing and dedusting device of claim 1.

6,, it is characterized in that nozzle (1) sprays with buck according to the described boiler fume desulfurizing and dedusting device of claim 1.

7,, it is characterized in that it being to adopt pottery or stainless steel material to make according to the described boiler fume desulfurizing and dedusting device of claim 1.