CN1063753A

CN1063753A - But the boiler slag removal machine of dust-removal and desulfurizing

Info

Publication number: CN1063753A
Application number: CN 91100501
Authority: CN
Inventors: 刘鸿钧
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-01-25
Filing date: 1991-01-25
Publication date: 1992-08-19

Abstract

But a kind of boiler slag removal machine of dust-removal and desulfurizing, it is the horizontal segment opening at hydrolock slag extractor deslagging tank, connect a wet dust collector, wet dust collector has a deduster housing to be connected with tank, have gas approach on the housing, an exhanst gas outlet and a lime slurry import that is connected with the outlet of lime cylinder, a center smoke pipe is set in the housing to be communicated with in gas approach, the bottom of center smoke pipe is one and is trumpet-shaped flue gas shower nozzle, upper position in the deduster is equipped with corrugated water fender, and the upper position of deduster housing is installed a lime cylinder that is used for desulfurization.The dedusting of this machine collection, desulfurization, deslagging are one, and efficiency of dust collection reaches more than 90%, desulfuration efficiency about 80%, and it is low to have a cost, and area occupied is little, flue gas resistance is low, management and maintenance advantage easily

Description

But the boiler slag removal machine of dust-removal and desulfurizing

The invention belongs to the treatment facility of combustion products and combustion residue, but be specifically related to a kind of boiler slag removal machine of dust-removal and desulfurizing.

At present, the slagging-off of boiler and dedusting are carried out respectively, and flue gas is not then done desulfurization and directly entered atmosphere.The slagging-off of general medium and small-scale steam boiler or hot-water heating boiler nearly all is to adopt hydrolock scraper plate slag remover, the slag remover of this type all is to drive the operation of chain link scraper plate by drive unit basically, scraper plate can be close to except that slowly moving the bottom surface of slag bath, scrape after the lime-ash that falls into tank brought to tilting section by horizontal segment, to reach the purpose of dust out.This slag remover is simple in structure, and is economical and practical, but its shortcoming is to be used for slagging-off, can not handle flue dust and flue gas.The cleaner of more use divides dry dust removal and wet dust removal two big classes on boiler at present, dry type is representative with cyclone dust removal, though this deduster is simple, auxiliary equipment is less, but its efficiency of dust collection is lower than wet dust removal, especially catch the ability of micronic dust, easily produce secondary fly-up during dust out, and the sulfur dioxide in can not smoke treatment.The gallet water curtain dust collector that wet dust removal such as fiber crops stone factory of Hunan Bo Luo county Xinhua produce, the efficiency of dust collection height, can also partially absorb sulfur in smoke (mostly being 20% most), weak point is that the post processing of the formed dust-laden sour water of wet dust removal is pretty troublesome, needs more auxiliary equipment, and sour corrosion is serious in the process of delivery cycle water, thereby equipment manufacturing cost height, floor space is big, complex management, maintenance cost height.

The object of the present invention is to provide that a kind of to collect dedusting, desulfurization, deslagging be the boiler slag removal machine of one, this slag extractor has the characteristics of economy, efficient, low consumption.

The present invention includes the deslagging tank that constitutes by horizontal segment and tilting section, the chain scraper that is used for the drive unit of chain drive-belt scraper plate operation and moves in tank is formed the hydrolock slag extractor, it is characterized in that 0.5-1 that top with the deslagging tank is widened to former tank doubly, the degree of depth is deepened 0.2-0.5 doubly, formation has the trapezoidal flume at 60-80 degree angle, horizontal segment opening at the deslagging tank, connect a wet dust collector, separate the water bath dust-removing section that forms water seal with dividing plate, wet dust collector has a deduster housing to be connected with tank, have gas approach on the housing, an exhanst gas outlet and a lime slurry import that is connected in the outlet of lime cylinder, a center smoke pipe is set in the housing to be communicated with in gas approach, the bottom of center smoke pipe connects one and is trumpet-shaped flue gas shower nozzle, upper position in the deduster is equipped with corrugated water fender, the upper position of deduster housing is installed a lime cylinder, and the interior center smoke pipe of the liquid outlet of lime cylinder and deduster housing is connected.

The wet dust collector of this slag extractor, mainly constitute by housing, center smoke pipe, smoke entrance and water fender, the bottom of center smoke pipe connects one and is trumpet-shaped rectangle flue gas shower nozzle, be empty around the shower nozzle, the middle part is the cone-shaped Xie shape thing of a hollow, it forces flue gas to spray around shower nozzle, and the water surface is formed impulsive force, and shower nozzle is 0-100mm apart from the distance of the water surface.

The lime cylinder that is positioned at deduster housing upper position is the outer bucket of conical liquid outlet and to be similarly barrel-shaped bottom surface be that the filter residue bucket of sieve aperture shape constitutes by barrel-shaped bottom, and the upper position of outer bucket can be opened 1-2 water inlet.

The present invention is elaborated and provide embodiment below in conjunction with accompanying drawing.

But Fig. 1 is the example structure schematic diagram of the boiler slag removal machine of the present invention's dust-removal and desulfurizing.

Fig. 2 is Fig. 1 a-a line profile.

Fig. 3 is Fig. 1 b-b line profile.

1 is drive unit among the figure, the 2nd, and deslagging tank horizontal segment, the 3rd, deslagging tank tilting section, the 4th, dedusting section, the 5th, carrier bar, the 6th, water-sealed clapboard, the 7th, the overflow mouth of pipe, 8 slag extractor slag notches, the 9th, deduster housing, the 10th, the center smoke pipe, the 11st, flue gas shower nozzle, the 12nd, grade water plate, the 13rd, the outer bucket of lime cylinder, the 14th, bucket in the filter residue, the 15th, lime cylinder Tong lid, the 16, the 17th, water inlet, the 18th, milk of lime outlet, the 19th, boiler, the 20th, the boiler sliding dreg tube, the 21st, boiler flue gas outlet, the 22nd, deduster is seen and is looked into mouth, the 23rd, deduster advances mouth, and the 24th, the deduster outlet flue.

But the boiler slag removal machine of dust-removal and desulfurizing of the present invention is work like this: the exhanst gas outlet 21 of boiler is connected with the gas approach 23 of deduster in this slag extractor, the dust-laden of discharging like this by boiler 19, sulfur-containing smoke gas will enter the center smoke pipe 10 of deduster, smoke pipe top, center is connected with the outlet 18 of lime cylinder, thereby, lime slurry also will flow into the dedusting section 4 in the tank through the center smoke pipe, make the water in this section become alkalescence, when the high speed flue gas of boiler discharge entered the center smoke pipe, the lime slurry that flows into the center smoke pipe is dispelled by flue gas and begins to pounce on to be caught flue dust and makes sulfur in smoke become H ₂SO ₃Flue gas is from flue gas shower nozzle 11 ejection at a high speed, water layer is produced percussion, flue dust is called the impact water bath stage because inertia and water adhesion are stayed in the water, and flue gas then changes the direction of motion will impact water droplet and foam, form a parabola water droplet and a foam regions, ash-laden gas further purifies in this zone, and be called trickle and bathe the stage, and H ₂SO ₃Dissolve in alkaline tank and Ca(OH) ₂Effect forms CaSO ₄Sediment falls into tank, and flue gas after being purified low speed rises, and discharges from deduster outlet flue 24 through water fender 12.The discharge of flue gas can be by means of air-introduced machine.Because the efficient of water bath dust-removing and flue gas resistance be all in the distance dependent of shower nozzle 11 with the water surface, so the debugging of the junction of flue gas shower nozzle and the center smoke pipe activity of should making.

The present invention's quick lime desulfurization, upper position at deduster is installed a lime cylinder, the lime cylinder is made of bucket 14 in outer bucket 13 of lime cylinder and the filter residue, the upper position of outer bucket is opened 1-2 water inlet, can be used separately as running water water inlet 16 or alkaline waste water water inlet 17, the bottom of outer bucket is the taper liquid outlet, is communicated with the center smoke pipe 10 of deduster with outlet 18, the bottom surface of interior bucket 14 is the sieve aperture shape, and its effect is a filter residue.After quick lime was filled it up with in flip 15, running water or alkaline waste water washed away quick lime, made the calcium oxide in the quick lime form calcium hydroxide emulsion from drain pipe 18 inflow center smoke pipes 10.After the quick lime in the bucket uses up, in the time of will being neutrality except that the water in the slag bath (should often test pH value) except that water in the slag bath, the stone that interior bucket sifts out should be outwelled, again fill quick lime, throw in some mixed silt agent (as ferric sulfate etc.) in the lime at dress, purpose is to reduce the stability of removing interior water-borne glue body of slag bath and suspended impurity, makes it be gathered into bigger silt wadding thing sedimentation and goes down.The running water or the alkaline waste water of preparation lime mixed emulsion all flow into the deslagging tank, and the part of its water yield has been replenished the water yield that lime-ash is taken away, and the unnecessary water yield can be discharged from the overflow mouth of pipe 7 of deslagging tank.Will often keep the overflow mouth of pipe has water to discharge, and to guarantee the stability of water level in the tank, this is the necessary condition of deslagging dedusting.

As one embodiment of the present of invention, slag extractor can be selected design and the manufacturing process of GB 88R322 for use, the width on deslagging tank top is widened to 600mm by 430mm, the degree of depth is added by 850mm and is deep to 1100mm, be formed at horizontal plane and be the trapezoidal deslagging tank at 60-80 degree angle, that part of tank width of bathing the dedusting housing at water receiving will be widened to 1400mm, makees dividing plate on the top, two ends of this section tank, makes water bath dust-removing form the water bath dust-removing section of water seal.Deduster housing, center smoke pipe, flue gas shower nozzle and water fender all adopt fire-retardant type fiberglass to make, the deduster housing is connected with bolt with flange with tank, the center smoke pipe is welded in the housing, the flue gas nozzle set is in the bottom of center smoke pipe, available pin is reconciled the distance with the water surface, is approximately about 50mm.Water fender is made the ripple type flap and is fixed on the interior upper position of housing, and exhanst gas outlet is opened in the side near water fender in the top of deduster housing, is used for the discharge of flue gas, and smoke evacuation can be by means of smoke extractor.The inside and outside bucket of lime cylinder also adopts fire-retardant type fiberglass to make, and outer bucket specification is diameter 800mm, high 800mm.But adopt the technical parameter of the boiler slag removal machine of the above-mentioned dust-removal and desulfurizing that manufactures and designs to be: lime-ash conveying capacity: 2 tons/hour, carrier bar speed: 2.97 meters/minute, power of motor: N=3 kilowatt, smoke treatment amount: 30000 cubic metres/hour, import and export cigarette speed: 11.5 meter per seconds, spout cigarette speed: 16.4 meter per seconds, flue gas rising cigarette speed: 2.4 meter per seconds, estimate flue gas resistance: less than the 50mm water column.

But the boiler slag removal machine of dust-removal and desulfurizing of the present invention, dust-removal and desulfurizing is arranged slag organically to be combined in together, the water of the row's of making slag machine can not only be drained lime-ash, also drained the simultaneously flue dust of processing through the water bath dust-removing device and the sediment of processing through desulfurization, thereby have economy, efficient, low consumption and multi-functional advantage. This kind row slag machine efficiency of dust collection generally can reach about 90%, does not have the secondary fly-up problem of flue dust, and sulfur method is simple and efficient is higher, it is low that but general desulfurization about 80%, this row slag machine also have a cost, and area occupied is little, flue gas resistance is low, management and easy to maintenance, superiority easily.

Claims

1, but a kind of boiler slag removal machine of dust-removal and desulfurizing, comprise the deslagging tank that constitutes by horizontal segment and tilting section, the hydrolock slag extractor that the chain scraper that is used for the drive unit of chain drive-belt scraper plate operation and moves in tank is formed, it is characterized in that width widen 0.5-1 times with deslagging tank top, the degree of depth is deepened 0.2-0.5 doubly, make it to form trapezoidal deslagging tank with 60-80 degree angle, at the horizontal segment opening of deslagging tank and widen, connect a wet dust collector, form the water bath dust-removing section, wet dust collector has a deduster housing to be connected with tank, have gas approach on the housing, an exhanst gas outlet and a lime slurry import that is connected with the outlet of lime cylinder, a center smoke pipe is set in the housing to be communicated with in gas approach, the bottom of center smoke pipe connects one and is trumpet-shaped flue gas shower nozzle, upper position in the deduster is equipped with corrugated water fender, the upper position of deduster housing is installed a lime cylinder, and the interior center smoke pipe of the liquid outlet of lime cylinder and deduster housing is connected.

2, slag extractor as claimed in claim 1 is characterized in that the described flue gas shower nozzle that is connected center smoke pipe lower position is to be sky around one, and the centre is the rectangular horn shape shower nozzle of the cone-shaped Xie shape thing of hollow, and shower nozzle is 0-100mm apart from the distance of the water surface.

3, slag extractor as claimed in claim 1, it is characterized in that the described lime cylinder that is positioned at deduster housing upper position is the outer bucket of conical liquid outlet and to be similarly barrel-shaped bottom surface be that the filter residue bucket of sieve aperture shape constitutes by barrel-shaped bottom, the upper position of outer bucket can be opened 1-2 water inlet.