CN202921125U - Flue gas purification tower - Google Patents
Flue gas purification tower Download PDFInfo
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- CN202921125U CN202921125U CN 201220595168 CN201220595168U CN202921125U CN 202921125 U CN202921125 U CN 202921125U CN 201220595168 CN201220595168 CN 201220595168 CN 201220595168 U CN201220595168 U CN 201220595168U CN 202921125 U CN202921125 U CN 202921125U
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- foam removal
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Abstract
The utility model discloses a flue gas purification tower, aiming at solving the problems that the wire screen or the baffle plate demisters of the existing flue gas desulfurization tower are easily plugged by dust in flue gas and have poor defoaming effect. A defoaming unit, an absorption liquid spray head (6), a cooling dedusting liquid spray head (5), a Venturi pipe dust remover (3) and a flue gas distributor (1) are arranged in a tower body (1); the defoaming unit is composed of a layer of wire packing (8) and at least two layers of defoaming grid packing (7) positioned below the wire packing; each layer of defoaming grid packing (7) is provided with an inclined channel inclined to the horizontal plane and composed of transverse plate strips and longitudinal plate strips, and the transverse plate strips and longitudinal plate strips are crossed mutually; in the adjacent upper and the lower layers of defoaming grid packing (7), the inclined channels are staggered, and the transverse plate strips and the longitudinal plate strips are arranged reversely to the inclination direction of the horizontal plane. The flue gas purification tower is mainly used for dedusting, desulphurizing and/denitrating and defoaming of flue gas.
Description
Technical field
The utility model relates to industry a kind of column for smoke purification used such as petrochemical industry, thermoelectricity, iron and steel, is used for flue gas is carried out dedusting, desulfurization and/or denitration and foam removal.
Background technology
The flue gas of the industries such as petrochemical industry, thermoelectricity, iron and steel discharging contains dust, oxysulfide (SOx is mainly sulfur dioxide) and nitrogen oxide (NOx is mainly nitric oxide, nitrogen dioxide etc.) usually.Country and industries concerned are very strict to the requirement of fume emission; For example require the dust concentration of discharging flue gas lower than 50 milligrams/standard cubic meter, NOx is lower than 200 milligrams/standard cubic meter, and sulfur dioxide is lower than 200 milligrams/standard cubic meter.Existing flue-gas dust-removing and desulfurization denitration technology is mainly that gas-liquid separation is carried out in fountain dedusting, absorption liquid desulphurization denitration, wire mesh demister, uses result often not fully up to expectations.Along with pollutant emission standard is increasingly strict, especially the PM2.5 standard is about to implement, and the effect that continues the denitration of raising flue-gas dust-removing and desulfurization is just very necessary.
Chinese patent CN201088903Y discloses a kind of wet flue gas desulfurization tower, comprises tower body and several layers of lime slurry spray equipment.The top of lime slurry spray equipment is provided with demister, and the tower body madial wall of below is provided with slurries distribution grid again, slurries again distribution grid to the inside ring-type protrude.Slurries distribution grid again can make the slurries that flow down along the desulfurizing tower inwall again assemble and distribute, and have also played the function of smoke deflector.CN201711084U discloses a kind of wet flue gas desulfurization tower, comprises desulfurizing tower body, flue gas desulfur device and flue gas demister, and the lateral wall of desulfurizing tower body is provided with the pre-spraying ventilating device of flue gas.The pre-spraying ventilating device of flue gas is tilted to and is 60 degree angles with the lateral wall of desulfurizing tower body, and inside is provided with shower.Flue gas desulfur device and flue gas demister are successively set in desulfurizing tower, the pre-spraying ventilating device of flue gas top.Above-mentioned fume desulfurizing tower Main Problems is: if 1. demister uses screen type demister commonly used, easily stopped up by the dust in flue gas, cause the cycle of operation of fume desulfurizing tower shorter.For avoiding stopping up, just fume dust remover (as electrostatic precipitator) need to be set separately before fume desulfurizing tower; This has just increased equipment investment and floor space.In addition, when the empty tower gas velocity in fume desulfurizing tower was higher, the foam removal effect of screen type demister was relatively poor; Absorption liquid easily is entrained out by flue gas, causes waste and contaminated environment.Usually, when reaching 1.85 meter per second, empty tower gas velocity just have liquid to be entrained out by flue gas.If 2. demister uses baffle type mist eliminator commonly used, when the empty tower gas velocity in fume desulfurizing tower is low, the foam removal effect is just relatively poor; When empty tower gas velocity is higher, the foam removal effect is poorer.
Summary of the invention
The purpose of this utility model is to provide a kind of column for smoke purification, with solve exist respectively when existing fume desulfurizing tower uses screen type demister or baffle type mist eliminator easily by the dust in flue gas stop up, the relatively poor problem of foam removal effect.
for addressing the above problem, the technical solution adopted in the utility model is: a kind of column for smoke purification, be provided with tower body, be provided with the absorption liquid shower nozzle in tower body, the top of absorption liquid shower nozzle is provided with the foam removal unit, it is characterized in that: the below of absorption liquid shower nozzle is provided with cooling and dedusting liquid shower nozzle, the below of cooling and dedusting liquid shower nozzle is provided with venturi tube duster, the below of venturi tube duster is provided with flue gas distributor, the foam removal unit is comprised of one deck wire packing and the foam removal grid packing that is positioned at its below, the foam removal grid packing arranges 2 layers at least, each layer foam removal grid packing is all with the ramp way that tilts with horizontal plane, consisted of by cross one another horizontally-arranged stripe board and tandem stripe board, horizontally-arranged stripe board and tandem stripe board broad ways favour horizontal plane, all be positioned on horizontal plane along its length, in neighbouring two-layer foam removal grid packing, ramp way is staggeredly arranged, horizontally-arranged stripe board and tandem stripe board incline direction with respect to the horizontal plane is opposite respectively.
Adopt the utility model, has following beneficial effect: be provided with cooling and dedusting liquid shower nozzle and venturi tube duster in the tower body of (1) column for smoke purification, can carry out to the pending flue gas that contains dust and SOx and/or NOx in flue gas distributor enters tower body dedusting (simultaneously that flue gas is cooling), therefore the utility model foam removal unit (comprising wire packing and foam removal grid packing) is not easy to be stopped up by the dust in flue gas, thereby makes the cycle of operation of column for smoke purification longer.The utility model need to not arrange separately fume dust remover in the front of column for smoke purification, and floor space is little; The investment that cooling and dedusting liquid shower nozzle and venturi tube duster increase is set less.(2) after the flue gas after desulfurization and/or denitration carried out the two-stage foam removal by foam removal grid packing and wire packing successively, contained liquid foam (and dust) basically can be by Ex-all; During empty tower gas velocity higher (reaching 3.21 meter per seconds), liquid still can be entrained out by flue gas.
In addition, wire packing of the present utility model and venturi tube duster can use existing wire packing and venturi tube duster.The foam removal grid packing simple in structure regular, be easy to make; And due to the factor of itself configuration aspects and voidage is higher, the vertical range between horizontally-arranged stripe board and tandem stripe board is relatively large, so flue gas is can be swimmingly less by foam removal grid packing, pressure drop, makes the whole tower pressure drop of the utility model column for smoke purification also less.Simultaneously, the foam removal grid packing itself is not easy to be stopped up by dust, and certain dedusting function is arranged.When the identical flue gas that contains dust is carried out foam removal, be about 2～3 times of existing screen type demister the lasting service time of the utility model foam removal unit.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.The drawings and specific embodiments do not limit the claimed scope of the utility model.
Description of drawings
Fig. 1 is the structural representation of the utility model column for smoke purification.
Fig. 2 is the partial enlarged drawing of foam removal grid packing shown in Figure 1.
Fig. 3 is the sectional perspective structural representation (amplification) of foam removal grid packing.
Fig. 4 is the schematic diagram that neighbouring two-layer foam removal grid packing medium dip passage is staggeredly arranged.
Fig. 5 is a kind of schematic diagram of purge hole; The bottom outlet of purge hole is rectangle, and venthole is half elliptic.
Fig. 6 is the A-A cutaway view (amplification) in Fig. 5.
Fig. 7 is the schematic diagram of the second purge hole; The bottom outlet of purge hole is rectangle, and venthole is trapezoidal.
Fig. 8 is the schematic diagram of the third purge hole; The bottom outlet of purge hole and venthole are trapezoidal.
Fig. 9 is the schematic diagram of the 4th kind of purge hole; Bottom outlet and the venthole of purge hole are half elliptic.
In Fig. 1 to Fig. 9, same reference numerals represents identical technical characterictic.
The specific embodiment
Referring to Fig. 1, the utility model column for smoke purification is provided with tower body 9.Tower body 9 comprises the cylindrical shell of vertical and cylindrical, and cylindrical shell is provided with top end socket and bottom bulkhead; The top end socket is provided with purifying smoke outlet 10, and bottom bulkhead is provided with urgent bleeder pipe 16.Be provided with absorption liquid shower nozzle 6 in tower body 9, the top of absorption liquid shower nozzle 6 is provided with the foam removal unit, and the top of tower body 9 is located in the foam removal unit.The below of absorption liquid shower nozzle 6 is provided with cooling and dedusting liquid shower nozzle 5, and the below of cooling and dedusting liquid shower nozzle 5 is provided with venturi tube duster 3 and slurry collecting disc 14.The below of venturi tube duster 3 and slurry collecting disc 14 is provided with flue gas distributor 1, and flue gas distributor 1 is positioned at the bottom of tower body 9.Absorption liquid shower nozzle 6, cooling and dedusting liquid shower nozzle 5 are located at the central region of tower body 9.
Referring to Fig. 1, slurry collecting disc 14 is inverted conical face shape, and top is connected on the madial wall of tower body 9, and the bottom is provided with slurries discharge pipe 15; Slurries discharge pipe 15 stretches out outside tower body 9 through the sidewall of tower body 9.Venturi tube duster 3 is comprised of the collapsible tube of bottom, the trunnion at middle part and the convergent divergent channel on top.Venturi tube duster 3 passes slurry collecting disc 14 and is fixedly connected with it; The bottom inlet of venturi tube duster 3 is positioned at the below of slurry collecting disc 14, and top exit is positioned at the top of slurry collecting disc 14.Flue gas distributor 1 shown in Figure 1 is the semi-canal type flue gas distributor; Flue gas distributor 1 can also use the flue gas distributor of existing other pattern.
Referring to Fig. 1, the foam removal unit is comprised of one deck wire packing 8 and the foam removal grid packing 7 that is positioned at its below, and foam removal grid packing 7 arranges 2 layers at least.Referring to Fig. 1 to Fig. 4, each layer foam removal grid packing 7 all with the ramp way that tilts with horizontal plane, is made of cross one another horizontally-arranged stripe board 21 and tandem stripe board 22; Horizontally-arranged stripe board 21 and tandem stripe board 22 are the planar shaped strip plate.Horizontally-arranged stripe board 21 and tandem stripe board 22 broad ways favour horizontal plane, all are positioned on horizontal plane along its length.Single ramp way is shaped as parallelogram (referring to Fig. 4) on horizontal plane.In individual layer foam removal grid packing 7, be parallel to each other between horizontally-arranged stripe board 21, be parallel to each other between tandem stripe board 22.In each layer foam removal grid packing 7, the length direction of horizontally-arranged stripe board 21 and tandem stripe board 22 is identical respectively.
As Fig. 2, Fig. 3 and shown in Figure 4, when towards foam removal grid packing 7, the utility model is called horizontally-arranged stripe board 21 with the stripe board that length direction is in the lateral attitude, and another row is called tandem stripe board 22 with the stripe board that horizontally-arranged stripe board 21 is intersected.In Fig. 4, the projection of lower surface on horizontal plane of blank grid representation upper strata foam removal grid packing 7, the projection of upper surface on horizontal plane of the grid representation lower floor foam removal grid packing 7 of blacking.On upper strata foam removal grid packing 7 lower surfaces, each crosspoint of horizontally-arranged stripe board 21 and tandem stripe board 22 lays respectively at the geometric center of each ramp way on lower floor's foam removal grid packing 7 upper surfaces, and on lower floor's foam removal grid packing 7 upper surfaces, each crosspoint of horizontally-arranged stripe board 21 and tandem stripe board 22 lays respectively at the geometric center of each ramp way on upper strata foam removal grid packing 7 lower surfaces; This is the best way that neighbouring two-layer foam removal grid packing 7 medium dip passages are staggeredly arranged.
In neighbouring two-layer foam removal grid packing 7, horizontally-arranged stripe board 21 and tandem stripe board 22 incline direction with respect to the horizontal plane is opposite respectively, and this just can make the incline direction of neighbouring two-layer foam removal grid packing 7 medium dip passages change.The set-up mode that is staggeredly arranged together with neighbouring two-layer foam removal grid packing 7 medium dip passages, general purpose is: can strengthen the contained liquid foam of the flue gas that enters in foam removal grid packing 7 and the collision of fine particle dust and horizontally-arranged stripe board and tandem stripe board, promote gathering of described liquid foam and fine particle dust.
By Fig. 3 and Fig. 4 as seen, the horizontally-arranged stripe board 21 in individual layer foam removal grid packing 7 and tandem stripe board 22 form the grid that roughly is groined type on horizontal plane.The general employing of the infall of horizontally-arranged stripe board 21 and tandem stripe board 22 is welded to connect.
Column for smoke purification of the present utility model, foam removal grid packing 7 normally arrange 2～3 layers; Illustrated in figures 1 and 2 is to arrange respectively 3 layers.
Referring to Fig. 3 and Fig. 5 to Fig. 9, when the exhaust gas dust content in entering foam removal grid packing 7 is higher, on the horizontally-arranged stripe board 21 that the utility model can be in foam removal grid packing 7 and tandem stripe board 22, purge hole 30 is set all.Purge hole 30 comprises the bottom outlet 31 of planar shaped, and the top of bottom outlet 31 is provided with top cover 32.Bottom outlet 31 and top cover 32 respectively have a lower limb, form pore 33 between two lower limbs; Bottom outlet 31 and top cover 32 remaining edge interconnect.Purge hole 30 shown in Figure 5, bottom outlet 31 is rectangle, venthole 33 is half elliptic.Purge hole 30 shown in Figure 7, bottom outlet 31 is rectangle, venthole 33 is trapezoidal.Purge hole 30 shown in Figure 8, bottom outlet 31 and venthole 33 are trapezoidal.Purge hole 30 shown in Figure 9, bottom outlet 31 and venthole 33 are half elliptic.Above-mentioned various purge hole 30 generally all adopts the process for stamping manufacturing.Fig. 7 is to the cutaway view of purge hole 30 shown in Figure 9 A-A position in being equivalent to Fig. 5, and is all identical with Fig. 6.As seen from Figure 6, venthole 33 is substantially perpendicular to horizontally-arranged stripe board or tandem stripe board.When bottom outlet 31 and venthole 33 are trapezoidal, be preferably isosceles trapezoid.The area of the bottom outlet 31 of various purge holes 30 generally is 30～150 square millimeters, and the area of venthole 33 generally is 1/5～1/3 of bottom outlet 31 areas.
Referring to Fig. 3, surrounding at 7 one ramp ways of foam removal grid packing, two horizontally-arranged stripe board 21 and two tandem stripe board 22 are arranged, can be in the above along the length direction of horizontally-arranged stripe board 21 and tandem stripe board 22,1～3 purge hole 30 (shown in Figure 3 is that a purge hole 30 is set respectively) be set respectively.In two horizontally-arranged stripe board 21 of an above-mentioned ramp way surrounding and two tandem stripe board 22, there is the upper surface of a horizontally-arranged stripe board 21 and a tandem stripe board 22 to be positioned at this ramp way; When purge hole 30 was set, top cover 32 and venthole 33 were in this ramp way (as shown in Figure 3).
Stripe board in Fig. 5 to Fig. 9 is not annotated Reference numeral; They both can represent horizontally-arranged stripe board 21, can represent tandem stripe board 22 again.
When the exhaust gas dust content in entering foam removal grid packing 7 is not very high, on the horizontally-arranged stripe board 21 that the utility model just need to be in foam removal grid packing 7 and tandem stripe board 22, purge hole 30 is set, as shown in Figure 1 and Figure 2.
Referring to Fig. 1 to Fig. 4, main structure parameters of the present utility model is generally as follows: in individual layer foam removal grid packing 7, angle β between horizontally-arranged stripe board 21 and horizontal plane is 30～85 degree, angle α between tandem stripe board 22 and horizontal plane is 30～85 degree, and the angle γ between horizontally-arranged stripe board 21 and tandem stripe board 22 is 20～90 degree (angle γ measures at the upper surface of individual layer foam removal grid packing 7).Vertical range t (referring to Fig. 2) between vertical range between horizontally-arranged stripe board 21 (figure slightly) and tandem stripe board 22 is 20～200 millimeters.Vertical range between horizontally-arranged stripe board 21 is generally got identical numerical value, and the vertical range between tandem stripe board 22 is generally got identical numerical value; Between horizontally-arranged stripe board and tandem stripe board, the desirable identical or different numerical value of described two vertical ranges.The voidage of individual layer foam removal grid packing 7 is 99.0%～99.5%, and specific area is 60～125 metre squared per cubic.Above-mentioned voidage refers to the shared percentage by volume in space in the foam removal grid packing 7 of unit volume, and specific area refers to horizontally-arranged stripe board 21 and the total surface area of tandem stripe board 22 in the foam removal grid packing 7 of unit volume.
Any in above-mentioned angle β, angle α and angle γ is preferably 30 degree, 45 degree or 60 degree.
In neighbouring two-layer foam removal grid packing 7, identical but the opposite direction of the numerical value of angle β between horizontally-arranged stripe board 21 and horizontal plane, identical but the opposite direction of the numerical value of angle α between tandem stripe board 22 and horizontal plane is so that in neighbouring two-layer foam removal grid packing 7, horizontally-arranged stripe board 21 is opposite respectively with tandem stripe board 22 incline direction with respect to the horizontal plane.
In venturi tube duster 3, the concentric reducer caliber ratio of collapsible tube is generally 1.1～1.5 (being preferably 1.2), and the concentric reducer caliber ratio of convergent divergent channel is generally 2.0～3.0 (being preferably 2.5); Can according to size and the dust removing effects requirement of tower body 9 interior diameter D, adjust above-mentioned caliber ratio and the caliber of collapsible tube and convergent divergent channel concentric reducer.Venturi tube duster 3 is general even to be arranged a plurality ofly, and magnitude setting is mainly determined according to the interior diameter D of tower body 9.The spacing of adjacent two venturi tube duster 3 axial lines is generally 300～600 millimeters.
Referring to Fig. 1, column for smoke purification of the present utility model, the height a of wire packing 8 are generally 50～100 millimeters (being preferably 100 millimeters), and the height b of individual layer foam removal grid packing 7 is generally 50～300 millimeters (being preferably 150 millimeters).Wire packing 8 can use the gas-liquid filteration silk screen of regulation in China-styled Certain Industry Field standard " HG/T 21618-1998 wire mesh demister ", as the gas-liquid filteration silk screen of SP, HP, DP or HR type.
Referring to Fig. 1, wire packing 8 and foam removal grid packing 7 are installed in tower body 9 of the present utility model.The diameter d outline of foam removal grid packing 7 is less than the interior diameter D of tower body 9, so that install; D is generally 0.8～12 meter.When wire packing 8 was not installed, slightly larger in diameter was in the interior diameter D of tower body 9; After installation, the madial wall of tower body 9 is close in its side.The lower surface of orlop foam removal grid packing 7 is supported on support member 2, and the upper surface of wire packing 8 compresses with trim ring 4, with this, wire packing 8 and foam removal grid packing 7 is fixed in tower body 9.Support member 2 and trim ring 4 can use existing support member and trim ring commonly used, for example can use the support member of steel I-beam-vertical plate type cell structure and the trim ring of vertical plate type cell structure.Venturi tube duster 3 can use various members commonly used to be fixed in tower body 9.
Column for smoke purification of the present utility model, cooling and dedusting liquid shower nozzle 5 and absorption liquid shower nozzle 6 can use existing various fluid jetting head.Cooling and dedusting liquid shower nozzle 5 arranges one group, one group arrange one deck or up and down which floor, every layer arranges one or morely, arranges in the usual way, guarantees that the cooling and dedusting liquid 12 that sprays out can cover the horizontal cross-section of tower body 9.Cooling and dedusting liquid 12 is generally water.
The utility model column for smoke purification is except flue gas is carried out dedusting, foam removal, when only carrying out flue gas desulfurization or only carrying out denitrating flue gas, absorption liquid shower nozzle 6 arranges one group, one group arrange one deck or the up and down which floor, every layer arranges one or more, arrange in the usual way, guarantee that the absorption liquid 13 that sprays out can cover the horizontal cross-section of tower body 9.During flue gas desulfurization, absorption liquid 13 uses the desulfurization absorption liquid, and the SOx in flue gas reacts with it and is removed.The desulfurization absorption liquid is that desulfurizing agent mixes the solution that forms with water, and desulfurizing agent is NaOH, amine liquid or ammonia etc.During denitrating flue gas, absorption liquid 13 uses denitration absorbing liquor, and the NOx in flue gas reacts with it and is removed.Denitration absorbing liquor is that denitrfying agent mixes the solution that forms with water, and denitrfying agent is ammonia or urea etc.
When carrying out flue gas desulfurization and denitrification simultaneously, absorption liquid shower nozzle 6 arranges two groups of up and down.Below one group of absorption liquid shower nozzle be used for spray desulfurization absorption liquid, above one group of absorption liquid shower nozzle be used for the spray denitration absorbing liquor.Arranging of each group absorption liquid shower nozzle is as indicated above.
Referring to Fig. 1, cooling and dedusting liquid shower nozzle 5 is generally the one-way sprayer that uses downward spraying cooling dedusting liquid 12, such as using the described fluid jetting head of CN201454359U.In operating process, cooling and dedusting liquid 12 enters cooling and dedusting liquid shower nozzle 5 by pipeline, cooling and dedusting liquid shower nozzle 5 sprays out cooling and dedusting liquid downwards, forms the cooling and dedusting liquid spray district (circular cone drift angle maximum can reach 165 degree) of cone shape, and the horizontal cross-section of the tower body 9 of below is covered.
Referring to Fig. 1, absorption liquid shower nozzle 6 be generally use can be simultaneously the Bidirectional spray head of spray-absorption liquid 13 up and down, such as using the described fluid jetting head of CN201702049U.In operating process, absorption liquid 13 enters absorption liquid shower nozzle 6 by pipeline, and 6 whiles of absorption liquid shower nozzle are spray-absorption liquid 13 up and down.The absorption liquid that sprays out downwards forms the absorption liquid spray district (circular cone drift angle maximum can reach 165 degree) of taper seat shape, and the horizontal cross-section of the tower body 9 of below is covered; The absorption liquid that upward spraying goes out forms the absorption liquid spray district (circular cone drift angle maximum can reach 165 degree) of inverted conical face shape, and the horizontal cross-section of the tower body 9 of top is covered.
The described fluid jetting head of CN201454359U as cooling and dedusting liquid shower nozzle 5, the described fluid jetting head of CN201702049U as the major advantage of absorption liquid shower nozzle 6 is, simple in structure, occupy-place is highly low, the spray area of cooling and dedusting liquid and absorption liquid is large, be evenly distributed.At the interior diameter of tower body 9 hour, cooling and dedusting liquid, the absorption liquid that absorption liquid shower nozzle 6 sprays out that cooling and dedusting liquid shower nozzle 5 sprays out just can be with the horizontal cross-section covering (as shown in Figure 1) of tower body 9.The accompanying drawing that cooling and dedusting liquid shower nozzle 5 and absorption liquid shower nozzle 6 arrange in groups omits, referring to the explanation of preamble.In addition, cooling and dedusting liquid shower nozzle 5 also can use can be simultaneously the Bidirectional spray head of spraying cooling dedusting liquid up and down, absorption liquid shower nozzle 6 also can use the one-way sprayer of downward spray-absorption liquid; Relevant accompanying drawing omits.
The material of each parts of the utility model generally is stainless steel (as 316L, 321 type stainless steels).
Below with reference to column for smoke purification shown in Figure 1, take flue gas ash removal-desulfurization-foam removal as example, operating process of the present utility model is described.The pending flue gas that contains dust and SOx 11 (temperature is generally 180～250 ℃) flows in flue gas distributor 1 enters tower body 9 from bottom to top.At first the venturi tube duster 3 of flowing through accelerates to flow in collapsible tube; And then enter convergent divergent channel by trunnion, slow down in convergent divergent channel and flow.After flue gas is flowed out by venturi tube duster 3, the cooling and dedusting liquid spray district of the formed cone shape of cooling and dedusting liquid that the cooling and dedusting liquid shower nozzle 5 of upwards flowing through sprays out downwards; Dust in the flue gas dedusting liquid drop that is cooled is swept along, and to falling in slurry collecting disc 14, flue gas is cooled simultaneously.Said process makes flue gas be cooled to 50～60 ℃, and the big dust particle (accounting for the major part of dust total amount in flue gas) in flue gas is removed.
Flue gas after above-mentioned cooling and dedusting upwards flows into the spray district of absorption liquid shower nozzle 6; The absorption liquid of the formed taper seat shape of absorption liquid that the absorption liquid shower nozzle 6 of at first flowing through sprays out downwards spray district, then the absorption liquid spray district of the formed inverted conical face of the absorption liquid shape that goes out of absorption liquid shower nozzle 6 upward sprayings of upwards flowing through contact with absorption liquid 13.Absorption liquid 13 is the desulfurization absorption liquid; SOx in flue gas and absorption liquid 13 reactions are removed, and product flows away downwards with reacted absorption liquid.In said process, flue gas successively contacts with absorption liquid for twice, has improved gas-liquid contact chance and mass transfer and reaction efficiency; Simultaneously, after cooling and dedusting in flue gas remaining fine particle dust be absorbed liquid and wash a part, prevented that flue gas from carrying their secretly and continuing upper ease.
Flue gas after desulfurization contains a small amount of liquid foam and fine particle dust, continues upwards to flow, successively by foam removal grid packing 7 and wire packing 8.A plurality of ramp way introversion bafflings that up and down stagger of flue gas in multilayer foam removal grid packing 7 are moving, and contained large drop and fine particle dust accumulate on the upper surface of horizontally-arranged stripe board 21 and tandem stripe board 22 after encountering horizontally-arranged stripe board 21 in foam removal grid packing 7 and tandem stripe board 22; When accumulating to a certain degree, the accumulation of drop and dust is tilted to lower landing along the upper surface of horizontally-arranged stripe board 21 and tandem stripe board 22, can be entrained in a large number on the wire packing 8 of foam removal grid packing 7 tops by flue gas, avoid dust to stop up too quickly wire packing 8.The flue gas that is flowed out by the superiors' foam removal grid packing 7 is only surplus a small amount of fine droplets and a micro-fine particle dust, continues upwards to flow with flue gas, and during by wire packing 8, major part is filtered; Fine droplets is accumulated into large drop and falls, and micro-dust together falls thereupon.Like this, the flue gas after desulfurization by foam removal grid packing 7 and wire packing 8 two-stage foam removals after, contained liquid foam and dust become purifying smoke basically by Ex-all.Purifying smoke is flowed out by purifying smoke outlet 10 at last, is discharged in atmosphere.
In above-mentioned whole flue gas ash removal-desulfurization-foam removal process, dust, desulfurization reaction product and reacted absorption liquid with in the cooling and dedusting liquid of crossing, the flue gas that is removed all accumulate in slurry collecting disc 14, form slurries 17.Slurries 17 are finally discharged outside tower body 9 continuously by slurries discharge pipe 15.
In Fig. 1, Fig. 3 and Fig. 5 to Fig. 9, the arrow of unreceipted Reference numeral represents the flow direction of flue gas.
Flue gas ash removal-denitration of the present utility model-foam removal process and flue gas ash removal-desulphurization denitration-foam removal process, flue gas ash removal-desulfurization-the foam removal process is similar with above-mentioned, and detailed description is omitted.
Referring to Fig. 3 and Fig. 5 to Fig. 9, in the situation that on the horizontally-arranged stripe board 21 in, the foam removal grid packing 7 higher through cooling and dedusting and the exhaust gas dust content after desulfurization and/or denitration in entering foam removal grid packing 7 and tandem stripe board 22, purge hole 30 is set, when flowing in a plurality of ramp ways that stagger up and down of described flue gas in multilayer foam removal grid packing 7, part of smoke enters purge hole 30 by bottom outlet 31, flowed out by venthole 33, be tilted to current downflow along the upper surface of horizontally-arranged stripe board 21 and tandem stripe board 22.This drop and dust that helps to accumulate on horizontally-arranged stripe board 21 and tandem stripe board 22 upper surfaces is tilted to lower landing along the upper surface of horizontally-arranged stripe board 21 and tandem stripe board 22, to keep foam removal, the dust removing effects of foam removal grid packing 7.On horizontally-arranged stripe board 21 in foam removal grid packing 7 and tandem stripe board 22, purge hole 30 is set, also helps the pressure drop that reduces each layer foam removal grid packing 7.
The utility model column for smoke purification is mainly used in the industries such as petrochemical industry, thermoelectricity, iron and steel, is used for flue gas is carried out dedusting, desulfurization and/or denitration and foam removal.
Claims (5)
1. column for smoke purification, be provided with tower body (9), be provided with absorption liquid shower nozzle (6) in tower body (9), the top of absorption liquid shower nozzle (6) is provided with the foam removal unit, it is characterized in that: the below of absorption liquid shower nozzle (6) is provided with cooling and dedusting liquid shower nozzle (5), the below of cooling and dedusting liquid shower nozzle (5) is provided with venturi tube duster (3), the below of venturi tube duster (3) is provided with flue gas distributor (1), the foam removal unit by one deck wire packing (8) and be positioned at its below foam removal grid packing (7) form, foam removal grid packing (7) arranges 2 layers at least, each layer foam removal grid packing (7) is all with the ramp way that tilts with horizontal plane, consisted of by cross one another horizontally-arranged stripe board (21) and tandem stripe board (22), horizontally-arranged stripe board (21) and tandem stripe board (22) broad ways favour horizontal plane, all be positioned on horizontal plane along its length, in neighbouring two-layer foam removal grid packing (7), ramp way is staggeredly arranged, horizontally-arranged stripe board (21) and tandem stripe board (22) incline direction with respect to the horizontal plane is opposite respectively.
2. column for smoke purification according to claim 1, it is characterized in that: foam removal grid packing (7) arranges 2～3 layers.
3. column for smoke purification according to claim 1, it is characterized in that: be equipped with purge hole (30) on the horizontally-arranged stripe board (21) in foam removal grid packing (7) and tandem stripe board (22), purge hole (30) comprises the bottom outlet (31) of planar shaped, the top of bottom outlet (31) is provided with top cover (32), bottom outlet (31) and top cover (32) respectively have a lower limb, form pore (33) between two lower limbs, bottom outlet (31) and top cover (32) remaining edge interconnect.
4. according to claim 1 and 2 or 3 described column for smoke purification, it is characterized in that: cooling and dedusting liquid shower nozzle (5) arranges one group, and absorption liquid shower nozzle (6) arranges one group or two groups of up and down are set.
5. column for smoke purification according to claim 4, it is characterized in that: cooling and dedusting liquid shower nozzle (5) is the one-way sprayer of downward spraying cooling dedusting liquid, absorption liquid shower nozzle (6) is the Bidirectional spray head of spray-absorption liquid up and down simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595168 CN202921125U (en) | 2012-11-05 | 2012-11-05 | Flue gas purification tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595168 CN202921125U (en) | 2012-11-05 | 2012-11-05 | Flue gas purification tower |
Publications (1)
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| CN202921125U true CN202921125U (en) | 2013-05-08 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103638801A (en) * | 2013-12-13 | 2014-03-19 | 航天环境工程有限公司 | Novel smoke purification spray tower |
| CN103864163A (en) * | 2014-03-27 | 2014-06-18 | 广州中国科学院先进技术研究所 | Combined type nonmetal sea water desalination demister |
| CN106000045A (en) * | 2016-06-17 | 2016-10-12 | 王骞 | Deep dedusting, desulfurating and denitrating equipment for boiler flue gas |
| CN109069985A (en) * | 2016-04-27 | 2018-12-21 | Lab 有限公司 | The method and facility of wet type desulfurizing are carried out for the waste gases and smoke to seagoing vessel engine |
| CN110201494A (en) * | 2019-07-03 | 2019-09-06 | 深圳市百瑞空气处理设备有限公司 | Acetone gas recovery system |
| CN110201492A (en) * | 2019-07-03 | 2019-09-06 | 深圳市百瑞空气处理设备有限公司 | Coating machine organic gas recovery system |
| CN112691618A (en) * | 2019-10-22 | 2021-04-23 | 中国石油化工股份有限公司 | Gas-liquid reaction apparatus and denitration method |
-
2012
- 2012-11-05 CN CN 201220595168 patent/CN202921125U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103638801A (en) * | 2013-12-13 | 2014-03-19 | 航天环境工程有限公司 | Novel smoke purification spray tower |
| CN103638801B (en) * | 2013-12-13 | 2015-08-19 | 航天环境工程有限公司 | A kind of spray column of new type purification flue gas |
| CN103864163A (en) * | 2014-03-27 | 2014-06-18 | 广州中国科学院先进技术研究所 | Combined type nonmetal sea water desalination demister |
| CN109069985A (en) * | 2016-04-27 | 2018-12-21 | Lab 有限公司 | The method and facility of wet type desulfurizing are carried out for the waste gases and smoke to seagoing vessel engine |
| CN109069985B (en) * | 2016-04-27 | 2022-01-28 | Lab 有限公司 | Method and installation for wet desulfurization of exhaust fumes of marine engines |
| CN106000045A (en) * | 2016-06-17 | 2016-10-12 | 王骞 | Deep dedusting, desulfurating and denitrating equipment for boiler flue gas |
| CN106000045B (en) * | 2016-06-17 | 2019-04-16 | 王骞 | Boiler smoke depth dust-removal and desulfurizing denitration device |
| CN110201494A (en) * | 2019-07-03 | 2019-09-06 | 深圳市百瑞空气处理设备有限公司 | Acetone gas recovery system |
| CN110201492A (en) * | 2019-07-03 | 2019-09-06 | 深圳市百瑞空气处理设备有限公司 | Coating machine organic gas recovery system |
| CN112691618A (en) * | 2019-10-22 | 2021-04-23 | 中国石油化工股份有限公司 | Gas-liquid reaction apparatus and denitration method |
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