CN2281834Y

CN2281834Y - Desulfurizing and dust-removing device for boiler smoke

Info

Publication number: CN2281834Y
Application number: CN 97203180
Authority: CN
Inventors: 武晓冬
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-11
Filing date: 1997-04-11
Publication date: 1998-05-20
Anticipated expiration: 2007-04-11

Abstract

The utility model relates to a desulfurizing and dust-removing device for boiler smoke, which is environmental protection equipment for purifying smoke gas. The defects of the dust removing and eliminating equipment that the structure is complicated, the energy consumption is high, and the efficiency is low are overcome. Water of pH7-9 is adopted for soaking slag. The pH7-9 water acts with smoke gas in a dust remover, achieving the SO<2> removing function. Dust in the smoke gas is dissolved in the bottom of the device, scraped off by the mud scraping mouth of the mud scraping device of an internal rolling cylinder type mud cleaning device, and discharged through a mud receiving bucket. Water for cleaning the smoke gas is used in the circulation way, so water is saved. The dust removing efficiency is up to 99%, the desulfurizing rate is more than 50%, the structure of the equipment is simple, the running energy consumption is little, and the operation is convenient.

Description

The boiler fume desulfurizing and dedusting device

The utility model relates to the flue purifier of boiler in the atmosphere environmental protection equipment field.

Because the extensive use of coal-burning boiler through the pernicious gas that flue emits, has caused serious atmosphere pollution, especially contains SO in the flue gas ₂Acid rain coverage and acid rain amount are rolled up, farmland, forest and human environment of depending on for existence have been destroyed, in order to control emission of harmful substances in the flue gas, produced multiple device for abatement of smoke and dust and desulfurizer, but the apparatus structure complexity, big energy-consuming, efficient is not high, therefore must provide a kind of more satisfactory desulfation dust-extraction device.

Order of the present utility model provides the device of a kind of not only dedusting but also desulfurization, the efficient height, and power consumption is few, water saving, easy to operate desulfurizing dust-collector.

The technical solution of the utility model is to soak the water that is alkalescence with slag to contact with the flue gas that boiler is discharged, and because of flue gas pressures is a negative pressure, makes alkaline water produce a large amount of sprays, and flue gas fully contacts with water, dust in the flue gas and SO ₂Gas is dissolved in the alkaline water, makes gas cleaning, and the fume-dehydrating that has purified is after blower fan is discharged, and dust deposit soluble in water is under water, and by scraping of interior drum-type mud box, the alkaline water that cleans flue gas is by SO ₂Neutralization is soaked slag after overflow pipe enters the slag pond again, makes water reply alkalescence again, and repetitive cycling is used.

According to above-mentioned principle, the utlity model has a slag pond, the slag that burning in boiler goes out is put into the pond, be soaked in water, because slag contains Fe ₂O ₃, Al ₂O ₃Deng metal oxide, under the water logging bubble, dissolve in the water, make water have alkalescence, soak that pH value can reach more than 8.3 after 1-6 hour, this alkaline water is squeezed in the water storage tank of deduster with water pump, enters deduster through filling pipe, and there is a gas approach side of deduster, boiler smoke enters in the deduster through this import, flue gas and alkaline water meet and evoke spray in deduster, produce strong stirring action, and flue gas and alkaline water are had an effect, dust sinks at the bottom of the device, SO ₂Be dissolved in and produce neutralization in the alkaline water, in order to improve desulfuration efficiency, establish a stuffing box, put into certain alkaline matter in this case, to improve the alkalescence of water, clean flue gas is discharged from air outlet through the dehydrator dehydration, and air-introduced machine blasts chimney emptying with it.The dust that sinks at the bottom of the device can become very firm slime layer, to in time remove, otherwise be difficult to dispose, drum-type mud box in deduster, establishing, establish the bucket that grafts clay on mud box next door, be fixed on the wall, mud box rotation by the motor band, be uniform-distribution with a plurality of buckets of scraping in tube, open a plurality of angles on barrel, the front of angle is circular-arc constant, the back of angle is pulled out a slope outward with it, scraped into a bucket in the tube by the body refuse of this slope at the bottom of device, when this bucket forwarded the top to, the body refuse in the bucket was poured in the bucket that grafts clay automatically, the water hole that some is arranged on barrel and bucket, so that elimination moisture, the bucket that grafts clay has a mud mouth, and body refuse is discharged deduster through mud mouth.

The utlity model has following advantage:

1, adopt depression dust-removing, evoke a large amount of sprays, make flue gas and water engaging surface big, dust removal efficiency reaches 99%;

2, adopt the slag water desulfurization that is alkalescence, desulfurization degree reaches more than 50%;

3, washings adopt the mode that circulates, and only need appropriate supplement water-filling, using water wisely;

4, adopt wheeled mud box easy and simple to handle, clear mud is timely, and body refuse is not with water;

5, easily manufactured, operating cost is low

The accompanying drawing that the utility model provides has:

Fig. 1 boiler fume desulfurizing and dedusting device system diagram;

Fig. 2 boiler fume desulfurizing and dedusting device structural representation.

Embodiment accompanying drawings of the present utility model is as follows:

The slag of boiler 14 was soaked in water in slag pond 1 1-6 hour, metal oxide in the slag is dissolved in water, make water be alkalescent, PH＞8.3, this slag water is squeezed into water storage tank 9 with pump 12, and the flue gas of boiler 14 enters desulfurizing dust-collector 3 by airduct 13 from air intake water inlet 10, and the slag water in the water storage tank 9 also enters desulfurizing dust-collector 3 from air intake water inlet 10 through filling pipe 11, in desulfurizing dust-collector 3, SO ₂Soluble in water, produce neutralization reaction with alkali, dust dissolves in the water, form ash bed 25 in the bottom, flue gas after being purified is through dehydrator 17 dehydrations on desulfurizing dust-collector top, discharge by air-introduced machine 7 from air outlet then, a dividing plate 16 is established on one side by air intake water inlet 10 in desulfurizing dust-collector 3, the boiler smoke that enters and the flue gas of purification are separated, also be provided with drum-type mud box 15 at another side, be used for striking off the lime-ash 25 that sinks to the bottom, a plurality of buckets 24 of scraping are housed in tube, on barrel, evenly open a plurality of angles, promptly scrape mud mouth 27, the front of angle (fixed with direction of rotation) circular shape is constant, the back of angle is pulled out a slope outward with it, ramp height is 5-10mm, when drum-type mud box 3 rotates in motor 20 drives by turning cylinder 19, scrape and mouthful forward the bottom to and contact with ash bed 25, scrape mouth 27 and lime-ash is shoveled scrape in the cylinder in the bucket 24, lime-ash drops out from scrape bucket 24 when scraping bucket and forward top to, fall into the bucket 22 that grafts clay, the bucket 22 that grafts clay is fixed on the outer wall 26, and is provided with a mud mouth 21, and lime-ash is discharged through mud mouth 21.On outer wall 26 tops heat extraction protective cover 18 is housed,, also is provided with alkaline matter stuffing box 4, wherein fill basic species so that the basicity in the supplementing water in the desulfurizing dust-collector outside as heat transmission.In order to keep the water surface elevation in the desulfurizing dust-collector, overflow pipe 2, the water that overflows suitably highly is housed from desulfurizing dust-collector at outer wall 26, return in the slag pond and soak slag, when being lower than certain altitude as the water level in the desulfurizing dust-collector, by magnetic valve, electric wire 5, electric cabinet 6, start water pump 12, the water in the slag pond 1 is squeezed into water storage tank 9, through filling pipe 11, air intake water inlet 10 enters in the desulfurizing dust-collector.

Claims

1; the boiler fume desulfurizing and dedusting device; by spray deduster; sedimentation basin is formed; it is characterized by deduster (13) wall and be provided with an air intake water inlet (10); one air outlet (8) is arranged at the device top; below air outlet (8), be provided with dehydrator (17); dividing plate (16) is established on one side by air intake water inlet (10) at deduster; another side is provided with interior drum-type mud box (15); be with by motor (20) and rotating; in the barrel of mud box (15), install 4-16 and scrape bucket (24); there be 16-20 to scrape mud mouth (27) on the barrel; scraping mud mouth (27) is to open an angle on barrel, and the angle front keeps original circular arc, and the angle back is translated into the slope outward; the slope height is 5-10mm; adorn a mud mouth (21) on it being provided with the bucket (22) that grafts clay on the wall (26) corresponding to the deduster of interior drum-type mud box, stretch to the outside, heat extraction protective cover (18) is housed on dedusting wall top by deduster.

2, boiler fume desulfurizing and dedusting device according to claim 1, it is characterized by the outer slag pond (1) that is provided with, slag pond (1) links to each other with water storage tank (9) with water pump (12) by water inlet pipe, water storage tank (9) links to each other with air intake water inlet (10) on the desulfurizing dust-collector (3) by filling pipe (11), on desulfurizing dust-collector (3), an overfall is arranged, return pond water pipe (2) by overflow and be connected with slag pond (1).