CN2358345Y - Vertical flowing particle layer fume remover - Google Patents

Abstract

The utility model relates to a vertical flowing particle layer fume remover used for dust removing of smoke of industrial kilns, which is characterized in that the shape of the utility model forms an upright pole shape; the upright pole-shaped upper cylinder is provided with a ring pole-shaped grain flow guide cylinder along with the direction of a concentric circle; the outer wall of the utility model adopts a plate shape structure; the outer wall, the inner wall of the upper cylinder, and an air inlet which is vertical with the side face of the upper cylinder form a static pressure cavity, and thereby, the air flow with dust enters a filter core grain layer whose size is the same as the size of the grain flow guide cylinder in a layer flowing mode, and clean air are exhausted to atmosphere through the inner wall of the filter core grain layer. The utility model has the advantage of simple structure, small blocking and loss of air flow, large processing amount of air with dust, uniform thickness of the filter core grain layer, high dust removing efficiency, convenient operation and maintenance.

Description

But a kind of vertical flow particles layer smoke duster

The utility model relates to the industrial furnace fume dust remover, is meant a kind of gravel bed filter especially.

Employed gravel bed filter in flue gas is handled at present, relatively be typically a kind of by the compound horizontal boiling type gravel bed filter of forming in multilayer particle filter course chamber, during work: the dusty gas of distributing to each particle filter course chamber by house steward, after entering level particles filter course chamber by import triple valve and pipeline, dust-contained airflow directly is blown into the particle filter course in the side-blown mode, and the cleaning gas tream that is filtered grit passes screen cloth and discharges deduster through the outlet triple valve.When the dust stratification amount in the particle filter course reaches when influencing the deduster operate as normal, need carry out reverse gas cleaning handles, this particle filter course chamber of need deashing advances at this moment, the outlet triple valve under compressed air-driven with filter opposite states, start back blowing machine, clean air upwards makes the boiling of filtering particle material from the outlet triple valve through the bottom of this particle filter course chamber and by screen cloth, comb makes it loose to the particle that stirs this particle filter course chamber under the driving of motor, dust stratification in this particle filter course chamber is taken away by purge gas, enter cyclone separator from inlet ductwork and triple valve, most of dust is processed to be fallen, remaining dust returns house steward with the blowback air-flow, handle with flue gas by other particle filter course chamber that keeps the filtration state again, carry out the deashing of other particle filter course chamber after this particle filter course chamber deashing is finished again.A whole set of deduster is worked and deashing like this again and again.Though horizontal boiling type gravel bed filter is a kind of practical soot processing device, there are some weak points that need solve in it: 1. the filtering particle material of particle filter course chamber is in uneven thickness, directly influences the dedusting fruit; 2. deduster complex structure, the air-flow resistance is decreased big, and the dusty gas treating capacity is little, and efficiency of dust collection is low.

The purpose of this utility model is that a kind of particle filter course thickness of design is even, and air-flow resistance damage is little, but the high vertical flow particles layer smoke duster of efficiency of dust collection.

But a kind of vertical flow particles layer smoke duster that the utility model provides is characterized in that: the external form of deduster is the identical upright post type of cross sectional dimensions; Along the central column particle guide shell 4 that upright post type top cylinder 3 concentric circles distribute, head exceeds the top of top cylinder 3, and with the planar top sealing of top cylinder 3, its outer wall adopts plate shape cylindrical structure, inwall adopts plate shape or netted cylindrical structure, and interlayer is convenient to flowing of filtering particle material for leading the sand passage; Upright post type top cylinder 3 sides are provided with a vertical smoke air inlet 5, make dusty gas enter deduster along the normal direction of upright post type top cylinder 3, run into the plate shape cylinder of particle guide shell 4 when air-flow after, utilize arc that air-flow is carried out the water conservancy diversion diffusion, between the inwall of the outer wall of particle guide shell 4 and top cylinder 3, form the equally distributed static pressure of a pressure chamber rapidly, and force dust-contained airflow to flow into tube 6 in the upright post type with layer flow mode; Tube 6 fixing seals are below top cylinder 3 in the upright post type, and the two is measure-alike; Be vertically mounted on the central column filter core stratum granulosum 7 that tube 6 concentric circles distribute in the tube 6 interior also edges in the upright post type, size is identical with particle guide shell 4, its cylinder shape inner wall and cylindrical outer wall adopt the mesh structure of laying steel wire on skeleton, its interlayer is full of the particulate material that is used to filter dusty gas, particulate material thickness is evenly constant, and dust-contained airflow passes through filter core stratum granulosum 7 along filter core stratum granulosum 7 normal directions with layer flow mode; What transposing filter core stratum granulosum 7 interlayer endoparticle material were housed successively in middle tube 6 bottoms changes sand valve 8, and checks that filter core stratum granulosum 7 inner wall area leak the inspection opening 9 of sand situation; Fixing seal doffing 10 below the tube 6 in upright post type is the cylindricality cone, and the upper dimension of doffing 10 is identical with middle 6; The taper screen cloth 11 of a bottom opening is installed in doffing 10 inside, and its effect is to make filtering particle material and the dust separation that contains dust; Mozzle 12 tops and taper screen cloth 11 bottom aperture UNICOMs, it is external that the bottom passes deduster doffing 10, is convenient to the filtering particle material and discharges deduster; Ash output valve 15 is equipped with in doffing 10 bottoms; Add the top of feed bin 2, the two size coupling at particle guide shell 4; The inwall UNICOM of blast pipe 1 and particle guide shell 4, filter core stratum granulosum 7.

The deashing gas blow pipe 14 that control valve 13 is housed can be set on mozzle 12, discharge dedusters when external by mozzle 12 from doffing 10 in the dust-laden particulate material, utilize control valve 13 to regulate the compressed air air-blowing quantity, through 14 pairs of gas blow pipes flow through in the mozzle 12 particulate material once more deashing handle, the secondary dust falls back to doffing 10 bottoms; And make discharge doffing 10 external filtering particle material totally clean reproducible utilization.What filtering particle material new or regeneration added the deduster top adds feed bin 2, flow back in the particle guide shell 4, thereby the flow circuit that realizes particulate material is used.

Add from adding feed bin 2.The filtering particle material grain size that enters filter core stratum granulosum 7 by particle guide shell 4 should be less than the screen cloth size of mesh opening of filter core stratum granulosum 7 cylinder shape inner walls and outer wall, in order to avoid the filtering particle material spills from filter core stratum granulosum 7; Filtering particle material grain size also should be regulated according to dust content, flue gas treating capacity.

The utility model compared with prior art has the following advantages:

1. can regulate endoparticle material particle size according to the character of flue dust, guarantee the efficiency of dust collection of various flue dust; And stratum granulosum thickness is even, the efficiency of dust collection height.

2. the purge mode of gravity screen cloth separation has been avoided the processing again of secondary dusty gas.

3. the utility model flow process is simple and direct, and is simple in structure, easy and simple to handle, easy to maintenance.

4. dust-contained airflow along filter core stratum granulosum 7 normal direction laminar flows, and passes filter core stratum granulosum 7 with the static pressure form, and the gas-flow resistance loss is little.

But Fig. 1 is vertical flow particles layer deduster structural representation.

Embodiment:

16700 tons of molten iron are produced in 2 in the existing 7 tons of cupola furnaces of certain foundry of iron company per year, and dust content reaches 12000mg/m ³A large amount of dust that former employing SW-2 type horizontal dust remover with boiling-particle layer produces when handling the cupola furnace operation, power of motor 75KW, handling air quantity is 1.5 ten thousand m ³/ h, the discharging flue gas concentration is 800mg/m ³, do not reach discharging standards; And the deduster complex structure, difficult the maintenance influences the ordinary production of enterprise.After implementing the utility model, power of motor is 110KW, handles the air quantity ability and reaches 42000m ³/ h, whole deduster running resistance is at 70～180mmH ₂O.During work, flue gas vertically enters top cylinder 3 by air inlet 5 and arrives particle guide shell 4 outer walls, by particle guide shell 4 outer walls in the top cylinder 3 air-flow is carried out the water conservancy diversion diffusion, make and form uniform static pressure between top cylinder 3 inwalls and particle guide shell 4 outer walls rapidly, under hydrostatic pressure, tube 6 and doffing 10 during dusty gas enters, bulky grain grit in the dusty gas is settled down to doffing 10 bottoms, under the effect of static pressure dusty gas be full of whole in the cavity between tube 6 inwalls and filter core stratum granulosum 7 outer walls, the interior fluidised form of deduster this moment is a laminar flow, dust-contained airflow enters filter core stratum granulosum 7 dust removals by filtration with normal direction, after grit in the dusty gas is filtered by filter core stratum granulosum 7, the inwall that clean air passes filter core stratum granulosum 7 enters blast pipe 1 and enters atmosphere, and concentration of emission is 66mg/m ³, reached operation and discharge index.When the filtering particle material dust stratification amount in the filter core stratum granulosum 7 makes gas-flow resistance be increased to a certain degree, open and change sand valve 8 and make particulate material fall into screen cloth 11, by the particulate material self gravitation particulate material is separated with dust stratification, dust falls into doffing 10 bottoms, discharges deduster by ash output valve 15 again; Particulate material is external from doffing 10 discharge dedusters by the mozzle 12 that communicates with screen cloth 11 bottoms.

But adjusting control valve 13 is regulated the compressed air air-blowing quantity simultaneously, by the gas blow pipe 14 that communicates with mozzle 12, to flowing through the particulate material deashing once more in the mozzle 12, dust falls back to doffing 10 bottoms, it is clean to discharge the external particle filter material cleaning of dedusters from doffing 10, can regeneration, and what add the deduster top again adds feed bin 2, flow back in the particle guide shell 4, thereby the flow circuit that realizes particulate material is used.After adopting the utility model, the simple and direct deduster of flue gas ash removal technological process is simple in structure, and is easy and simple to handle, easy to maintenance.

Claims (2)

1. But 1. vertical flow particles layer smoke duster, it is characterized in that: the external form of deduster is the identical upright post type of cross sectional dimensions; Central column particle guide shell (4) along the distribution of upright post type top cylinder (3) concentric circles, head exceeds the top of top cylinder (3), and with the sealing of the planar top of top cylinder (3), its outer wall adopts plate shape cylindrical structure, inwall adopts plate shape or netted cylindrical structure, and interlayer is for leading the sand passage; Smoke air inlet (5) is vertically in the side of top cylinder (3), forms a static pressure chamber between the inwall of the outer wall of particle guide shell (4) and top cylinder (3); Tube (6) fixing seal is in the below of top cylinder (3) in the upright post type, and the two is measure-alike; Be vertically mounted on the central column filter core stratum granulosum (7) that tube (6) concentric circles distributes in tube (6) and the edge, size is identical with particle guide shell (4), its cylinder shape inner wall and cylindrical outer wall adopt the mesh structure of laying steel wire on skeleton, and its interlayer is full of the particulate material that is used to filter dusty gas; Bottom middle tube (6), be equipped with and change sand valve (8), and inspection opening (9); Fixing seal is the cylindricality cone at the doffing (10) of middle tube (6) below, and the upper dimension of doffing (10) is identical with middle tube (6); The taper screen cloth (11) of a bottom opening is installed in doffing (10) inside; Mozzle (12) top and taper screen cloth (11) bottom aperture UNICOM, it is external that the bottom passes deduster doffing (10); Ash output valve (15) is equipped with in doffing (10) bottom; Add feed bin (2) at the top of particle guide shell (4), the two size coupling; The inwall UNICOM of blast pipe 1 and particle guide shell (4) and filter core stratum granulosum (7).
2. 2. but a kind of vertical flow particles layer smoke duster according to claim 1, it is characterized in that: can go up at mozzle (12) the deashing gas blow pipe (14) that control valve (13) is housed is set, to flowing through the particulate material deashing processing once more in the mozzle (12), make the particulate material regeneration.

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