CN202751925U - Tower for flue gas cleaning - Google Patents
Tower for flue gas cleaning Download PDFInfo
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- CN202751925U CN202751925U CN201220426685.2U CN201220426685U CN202751925U CN 202751925 U CN202751925 U CN 202751925U CN 201220426685 U CN201220426685 U CN 201220426685U CN 202751925 U CN202751925 U CN 202751925U
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Abstract
The utility model discloses a tower for flue gas cleaning, and aims at solving the problems that when a mesh is used in an existing flue gas desulfurization tower, the mesh can be easily blocked by dust existing in flue gas; and when a baffle plate type demister is used in the existing flue gas desulfurization tower, defoaming effect is poor. According to the tower for the flue gas cleaning, a defoaming unit, an absorbing-liquid spray nozzle (6), a cooling-dedusting-liquid spraying nozzle (5), a Venturi tube dust catcher (3) and a flue gas distributing device (1) are arranged in a tower body (9). The defoaming device is composed of mesh packing (8) and defoaming grid packing (7) located below the mesh packing. The defoaming grid packing is a packing layer with three-dimensional grid channels and is composed of strip-shaped plates which are arranged in rows and in parallel, and each the strip-shaped plate tilts in the length direction relative to the horizontal plane. The strip-shaped plates in the same row are parallel to one another, and the strip-shaped plates in one row and the strip-shaped pates in another row adjacent to the row tilt oppositely and cross one another. The tower for the flue gas cleaning is mainly used for dedusting, desulfurating and deforming and/or denitrating the flue gas.
Description
Technical field
The utility model relates to the used a kind of towers for gas cleaning of industry 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 mainly is sulfur dioxide) and nitrogen oxide (NOx mainly is 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 to be 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 mainly is that gas-liquid separation is carried out in fountain dedusting, absorption liquid desulphurization denitration, wire mesh demister, uses the 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 again distribution grid of slurries, slurries again distribution grid to the inside ring-type protrude.Slurries again distribution grid 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 the 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 the flue gas, cause the cycle of operation of fume desulfurizing tower shorter.For avoiding stopping up, just fume dust remover (such 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, the foam removal effect was just relatively poor when the empty tower gas velocity in fume desulfurizing tower was low; The foam removal effect was poorer when empty tower gas velocity was higher.
Summary of the invention
The purpose of this utility model provides a kind of tower for gas cleaning, with solve exist respectively when existing fume desulfurizing tower uses screen type demister or baffle type mist eliminator easily by the dust in the 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 tower for gas cleaning, be provided with tower body, be provided with the absorption liquid shower nozzle in the 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 wire packing and the foam removal grid packing that is positioned at its below, the foam removal grid packing is the packing layer with the stereoscopic grid passage, formed by the stripe board of in a row arranging side by side, each stripe board in the foam removal grid packing favours horizontal plane along its length, stripe board in same row's stripe board is parallel to each other, the incline direction of the stripe board of adjacent two rows in the stripe board and horizontal plane is opposite and mutually intersect, and any 1 two stripe board of arranging in the stripe board of arranging the stripe board both sides are staggeredly arranged.
Adopt the utility model, has following beneficial effect: be provided with cooling and dedusting liquid shower nozzle and venturi tube duster in (1) tower body of the present utility model, 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 with the flue gas 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 the flue gas, thereby makes the cycle of operation of tower longer.The utility model need to not arrange separately fume dust remover in the front of tower, 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 the 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 because the factor of itself configuration aspects and voidage is higher, the vertical range between the stripe board is relatively large, so flue gas is can be swimmingly less by foam removal grid packing, pressure drop, make whole tower pressure drop of the present utility model 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 that the utility model is used for the tower of gas cleaning.
Fig. 2 is the sectional perspective structural representation (amplification) of foam removal grid packing.
Fig. 3 is the schematic diagram that the stripe board in two row's stripe board of any row stripe board both sides in the foam removal grid packing is staggeredly arranged.
Fig. 4 is a kind of schematic diagram of purge hole; The bottom outlet of purge hole is rectangle, and venthole is half elliptic.
Fig. 5 is the A-A cutaway view (amplification) among Fig. 4.
Fig. 6 is the schematic diagram of the second purge hole; The bottom outlet of purge hole is rectangle, and venthole is trapezoidal.
Fig. 7 is the schematic diagram of the third purge hole; The bottom outlet of purge hole and venthole are trapezoidal.
Fig. 8 is the schematic diagram of the 4th kind of purge hole; Bottom outlet and the venthole of purge hole are half elliptic.
Among Fig. 1 to Fig. 8, same reference numerals represents identical technical characterictic.
The specific embodiment
Referring to Fig. 1, the tower that the utility model is used for gas cleaning 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 the 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 the 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 wire packing 8 and the foam removal grid packing 7 that is positioned at its below.Referring to Fig. 1, Fig. 2 and Fig. 3, foam removal grid packing 7 is the packing layer with the stereoscopic grid passage, is comprised of the stripe board 20 of in a row arranging side by side, and stripe board 20 is the planar shaped strip plate.Each stripe board in the foam removal grid packing 7 favours horizontal plane along its length, and broad ways is perpendicular to a common vertical plane.Stripe board in same row's stripe board is parallel to each other, and the incline direction of the stripe board of adjacent two rows in the stripe board and horizontal plane is opposite and mutually intersect.Stripe board in two row's stripe board of any row's stripe board both sides is staggeredly arranged; Namely along on the vertical plane of stripe board width, two row's stripe board of described both sides, each stripe board in row's stripe board lays respectively at the position of (preferably center) between two adjacent in another row's stripe board stripe board.As shown in Figure 3, in the middle of row's stripe board of blacking was positioned at, blank row's stripe board laid respectively at its both sides with the row's stripe board that is coated with ash; Along on the vertical plane of stripe board width, each blank stripe board lays respectively at the positions of (center) between adjacent two stripe board that are coated with ash, respectively is coated with the position that grey stripe board lays respectively at (center) between adjacent two blank stripe board.Stripe board in the foam removal grid packing 7 adopts above-mentioned set-up mode, general purpose is: can strengthen the contained liquid foam of the flue gas that enters in the foam removal grid packing 7 and the collision of fine particle dust and stripe board, promote gathering of described liquid foam and fine particle dust.
Referring to Fig. 2, in the foam removal grid packing 7, the infall of adjacent two row's stripe board generally adopts tongue-and-groove to connect or is welded to connect.
Wire packing 8 and foam removal grid packing 7 are disc, and upper and lower surface is the plane; Wire packing 8 is positioned on the upper surface of foam removal grid packing 7.
Referring to Fig. 2 and Fig. 4 to Fig. 8, when the exhaust gas dust content in entering foam removal grid packing 7 was higher, the utility model can all arrange purge hole 30 on the stripe board in foam removal grid packing 7.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 4, bottom outlet 31 is rectangle, venthole 33 is half elliptic.Purge hole 30 shown in Figure 6, bottom outlet 31 is rectangle, venthole 33 is trapezoidal.Purge hole 30 shown in Figure 7, bottom outlet 31 and venthole 33 are trapezoidal.Purge hole 30 shown in Figure 8, bottom outlet 31 and venthole 33 are half elliptic.Above-mentioned various purge hole 30 generally all adopts the process for stamping manufacturing.Fig. 6 is to the cutaway view of purge hole 30 A-A position in being equivalent to Fig. 4 shown in Figure 8, and is all identical with Fig. 5.As seen from Figure 5, venthole 33 is substantially perpendicular to stripe board 20.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.A plurality of purge holes 30 are set on the stripe board, and the distance between adjacent two purge holes 30 is generally 30～200 millimeters.
When the exhaust gas dust content in entering foam removal grid packing 7 was not very high, the utility model just need to the stripe board in foam removal grid packing 7 not arrange purge hole 30, such as Fig. 1, shown in Figure 3.
Referring to Fig. 1 to Fig. 3, main structure parameters of the present utility model is generally as follows: in foam removal grid packing 7, the angle α between adjacent two row's stripe board is generally 20～170 degree; Angle α is preferably 30 degree, 45 degree or 60 degree.Vertical range s in same row's stripe board between adjacent two stripe board is generally 30～200 millimeters, gets identical numerical value.Described vertical range s between adjacent two row's stripe board, desirable identical or different numerical value.The width e of stripe board 20 is 20～200 millimeters.The voidage of foam removal grid packing 7 is generally 99.1%～99.6%, and specific area is generally 50～125 metre squared per cubic.Described 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 the total surface area of stripe board in the foam removal grid packing 7 of unit volume.The thickness of stripe board in the foam removal grid packing 7 generally is 1～3 millimeter.
In the 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, the utility model is used for the tower of gas cleaning, and the height a of wire packing 8 is generally 50～100 millimeters (being preferably 100 millimeters), and the height b of foam removal grid packing 7 is generally 200～600 millimeters (being preferably 400 millimeters).Wire packing 8 can use the gas-liquid filteration silk screen of regulation in the China-styled Certain Industry Field standard " HG/T21618-1998 wire mesh demister ", such 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 the 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 the installation, the madial wall of tower body 9 is close in its side.The lower surface of foam removal grid packing 7 is supported on the 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 the 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 one 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 the tower body 9.
The 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 is except flue gas is carried out dedusting, the 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 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 the 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 the 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 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 every group of absorption liquid shower nozzle is as indicated above.
Referring to Fig. 1, cooling and dedusting liquid shower nozzle 5 generally is the one-way sprayer that uses downward spraying cooling dedusting liquid 12, such as using the described fluid jetting head of CN201454359U.In the 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 generally be 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 the 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 (such as 316L, 321 type stainless steels).
Below with reference to the tower that is used for gas cleaning 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.The venturi tube duster 3 of at first flowing through accelerates to flow in collapsible tube; And then enter convergent divergent channel by trunnion, in convergent divergent channel, slow down 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 the 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 the flue gas) in the flue gas is removed.
Flue gas behind the above-mentioned cooling and dedusting upwards flows into the spray district of absorption liquid shower nozzle 6; The absorption liquid spray district of the formed taper seat shape of absorption liquid that the absorption liquid shower nozzle 6 of at first flowing through sprays out downwards, the absorption liquid spray district of the formed inverted conical face of the absorption liquid shape that absorption liquid shower nozzle 6 upward sprayings of upwards flowing through again go out contacts with absorption liquid 13.Absorption liquid 13 is the desulfurization absorption liquid; SOx in the 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, behind the cooling and dedusting in the 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 the 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.The stereoscopic grid passage introversion baffling of flue gas in foam removal grid packing 7 is moving, and contained large drop and fine particle dust accumulate on the upper surface of stripe board after running into stripe board in the foam removal grid packing 7; When waiting to accumulate to a certain degree, the accumulation of drop and dust can be entrained on the wire packing 8 of foam removal grid packing 7 tops by flue gas in a large number along the downward landing of the upper surface of stripe board, has avoided dust to stop up too quickly wire packing 8.The flue gas that is flowed out by 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 major part is filtered during by wire packing 8; Fine droplets is accumulated into large drop and falls, and micro-dust together falls thereupon.Like this, the flue gas after the 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 the purifying smoke outlet 10 at tower body 9 tops at last, is discharged in the 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 the slurry collecting disc 14, form slurries 17.Slurries 17 are finally discharged outside the tower body 9 continuously by the slurries discharge pipe 15 of being located at slurry collecting disc 14 bottoms.
Among Fig. 1, Fig. 2 and Fig. 4 to Fig. 8, 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. 2 and Fig. 4 to Fig. 8, stripe board 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 arranges in the situation of purge hole 30, when flowing in the stereoscopic grid passage of described flue gas in 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 stripe board in the foam removal grid packing 7.This drop and dust that helps to accumulate on the described stripe board upper surface is tilted to lower landing along the upper surface of stripe board, to keep foam removal, the dust removing effects of foam removal grid packing 7.Stripe board in foam removal grid packing 7 arranges purge hole 30, also helps the pressure drop that reduces foam removal grid packing 7.
The utility model is used for the tower of gas cleaning, 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 (3)
1. tower that is used for gas cleaning, be provided with tower body (9), be provided with absorption liquid shower nozzle (6) in the 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 wire packing (8) and be positioned at its below foam removal grid packing (7) form, foam removal grid packing (7) is the packing layer with the stereoscopic grid passage, formed by the stripe board (20) of in a row arranging side by side, each stripe board in the foam removal grid packing (7) favours horizontal plane along its length, stripe board in same row's stripe board is parallel to each other, the incline direction of the stripe board of adjacent two rows in the stripe board and horizontal plane is opposite and mutually intersect, and any 1 two stripe board of arranging in the stripe board of arranging the stripe board both sides are staggeredly arranged.
2. the tower for gas cleaning according to claim 1, it is characterized in that: be equipped with purge hole (30) on the stripe board in the foam removal grid packing (7), 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 remaining edge of top cover (32) interconnect.
3. the tower for gas cleaning according to claim 1 and 2, 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 arrange two groups up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220426685.2U CN202751925U (en) | 2012-08-20 | 2012-08-20 | Tower for flue gas cleaning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220426685.2U CN202751925U (en) | 2012-08-20 | 2012-08-20 | Tower for flue gas cleaning |
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| CN202751925U true CN202751925U (en) | 2013-02-27 |
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| CN201220426685.2U Expired - Lifetime CN202751925U (en) | 2012-08-20 | 2012-08-20 | Tower for flue gas cleaning |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170212A (en) * | 2013-03-20 | 2013-06-26 | 浙江双屿实业有限公司 | Foam breaker |
| CN105176599A (en) * | 2015-09-29 | 2015-12-23 | 中国东方电气集团有限公司 | Impact flow washing device for purifying raw gas and purifying process |
| CN105771556A (en) * | 2016-03-15 | 2016-07-20 | 东北石油大学 | Integrated heat exchanging absorption tower |
| CN107174933A (en) * | 2017-06-01 | 2017-09-19 | 山东三融环保工程有限公司 | A kind of smoke eliminator with turbulent flow gas-liquid switching layer |
| CN107243231A (en) * | 2017-07-01 | 2017-10-13 | 成都国化环保科技有限公司 | A kind of desulfurizing tower |
| CN109011926A (en) * | 2018-08-21 | 2018-12-18 | 孙维 | A kind of equipment for treating industrial waste gas of water in dust removal circulation |
| 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 |
| CN109482132A (en) * | 2017-09-12 | 2019-03-19 | 阿克森斯公司 | The structuring packing elements being made of plate equipped with slot and recess portion |
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2012
- 2012-08-20 CN CN201220426685.2U patent/CN202751925U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170212A (en) * | 2013-03-20 | 2013-06-26 | 浙江双屿实业有限公司 | Foam breaker |
| CN105176599A (en) * | 2015-09-29 | 2015-12-23 | 中国东方电气集团有限公司 | Impact flow washing device for purifying raw gas and purifying process |
| CN105771556A (en) * | 2016-03-15 | 2016-07-20 | 东北石油大学 | Integrated heat exchanging absorption tower |
| CN105771556B (en) * | 2016-03-15 | 2017-03-01 | 东北石油大学 | Integral type heat exchange absorption tower |
| 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 |
| CN107174933A (en) * | 2017-06-01 | 2017-09-19 | 山东三融环保工程有限公司 | A kind of smoke eliminator with turbulent flow gas-liquid switching layer |
| CN107243231A (en) * | 2017-07-01 | 2017-10-13 | 成都国化环保科技有限公司 | A kind of desulfurizing tower |
| CN109482132A (en) * | 2017-09-12 | 2019-03-19 | 阿克森斯公司 | The structuring packing elements being made of plate equipped with slot and recess portion |
| CN109482132B (en) * | 2017-09-12 | 2022-02-08 | 阿克森斯公司 | Structured packing element made of flat plates provided with grooves and recesses |
| CN109011926A (en) * | 2018-08-21 | 2018-12-18 | 孙维 | A kind of equipment for treating industrial waste gas of water in dust removal circulation |
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