CN202876577U - Flue gas purification tower - Google Patents
Flue gas purification tower Download PDFInfo
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- CN202876577U CN202876577U CN 201220539978 CN201220539978U CN202876577U CN 202876577 U CN202876577 U CN 202876577U CN 201220539978 CN201220539978 CN 201220539978 CN 201220539978 U CN201220539978 U CN 201220539978U CN 202876577 U CN202876577 U CN 202876577U
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- dedusting
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Abstract
The utility model discloses a flue gas purification tower used for solving the problems that an existing flue gas desulfurization tower is easily blocked by dust in flue gas and has poor defoaming effect when a silk screen or a baffle plate type demister is used respectively. A defoaming unit, an absorption liquid nozzle (6), a cooling dust-removal liquid nozzle (5), dust removal grid filler (3) and a flue gas distributor (1) are arranged in a tower body (9), wherein the defoaming unit consists of silk screen filler (8) and defoaming grid filler (7) under the silk screen filler; the dust removal grid filler and the defoaming grid filler are independent layers with stereo grid passages, and formed by strip plates which are arranged in rows in parallel, and each strip plate is tilted to the horizontal plate along the lengthwise direction; and the strip plates in the same row are parallel to each other, and the strip plates in two adjacent strip plates are opposite to the tilting direction of the horizontal plane and crossed with one another. The flue gas purification tower is mainly used for dedusting, desulfurizing and/or denitrating and defoaming flue gas.
Description
Technical field
The utility model relates to the used column for smoke purification of industry such as a kind of 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, stopped up by the dust in the flue gas easily, 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 is entrained out by flue gas easily, 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 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 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 column for smoke purification, 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 the dedusting grid packing, the below of dedusting grid packing 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, dedusting grid packing and foam removal grid packing are the packing layer with the stereoscopic grid passage, formed by the stripe board of in a row arranging side by side, each stripe board favours horizontal plane along its length, in dedusting grid packing and the foam removal grid packing, 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, 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 dedusting grid packing 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 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 column for smoke purification longer.The utility model need to not arrange separately fume dust remover before column for smoke purification, floor space is little; It is less that the investment that cooling and dedusting liquid shower nozzle and dedusting grid packing increase is set.(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 can use existing wire packing.Dedusting grid packing and foam removal grid packing simple in structure regular is easy to make.And because the factor of dedusting grid packing and the structure aspects of foam removal grid packing own and voidage is higher, the vertical range between the stripe board is relatively large, so flue gas can be swimmingly by dedusting grid packing and foam removal grid packing, pressure drop is less, makes the whole pressure drop of column for smoke purification also less; Simultaneously, dedusting grid packing and foam removal grid packing itself are not easy to be stopped up by dust.The foam removal grid packing also has certain dedusting function; 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.
Description of drawings
Fig. 1 is the structural representation of the utility model column for smoke purification.
Fig. 2 is the sectional perspective structure enlarged diagram of dedusting grid packing shown in Figure 1 or 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 dedusting grid packing or 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, column for smoke purification of the present utility model 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 slurries discharge pipe 15.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 dedusting grid packing 3.The below of dedusting grid packing 3 is provided with flue gas distributor 1, and flue gas distributor 1 is positioned at the bottom of tower body 9.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.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, 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, dedusting grid packing 3 and foam removal grid packing 7 are the packing layer with the stereoscopic grid passage, are comprised of the stripe board 20 of in a row arranging side by side, and stripe board 20 is the planar shaped strip plate.In the dedusting grid packing 3, each stripe board 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.
The set-up mode of each stripe board in the foam removal grid packing 7 is identical with dedusting grid packing 3.Stripe board in dedusting grid packing 3 and the foam removal grid packing 7 adopts above-mentioned set-up mode, general purpose is: for dedusting grid packing 3, can strengthen the contained dust of the flue gas that enters in the dedusting grid packing 3 and the collision of stripe board, and the time of contact of prolong smoke and cooling and dedusting liquid, promote that the dust in the flue gas contacts, gathers with the drop of cooling and dedusting liquid.For foam removal grid packing 7, 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.
Dedusting grid packing 3, 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, in dedusting grid packing 3 and 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.
Referring to Fig. 2 and Fig. 4 to Fig. 8, when the pending exhaust gas dust content in entering dedusting grid packing 3 was higher, the utility model column for smoke purification can all arrange purge hole 30 on the stripe board in dedusting grid packing 3.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.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 higher, the utility model column for smoke purification can also arrange above-mentioned purge hole 30 on the stripe board in foam removal grid packing 7.Stripe board 20 among Fig. 2 to Fig. 8 both can represent the stripe board in the dedusting grid packing 3, can represent again the stripe board in the foam removal grid packing 7.
When not being very high, the utility model column for smoke purification just need to the stripe board in dedusting grid packing 3 and foam removal grid packing 7 not arrange purge hole 30, such as Fig. 1, shown in Figure 3 at exhaust gas dust content.
Referring to Fig. 1 to Fig. 3, the main structure parameters of the utility model column for smoke purification is generally as follows: in dedusting grid packing 3 and 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 dedusting grid packing 3 and foam removal grid packing 7 is 99.1%～99.6%, and specific area is 50～125 metre squared per cubic.Above-mentioned voidage refers to the shared percentage by volume in space in the dedusting grid packing 3 of unit volume or the foam removal grid packing 7, and specific area refers to the total surface area of stripe board in the dedusting grid packing 3 of unit volume or the foam removal grid packing 7.
The thickness of stripe board in dedusting grid packing 3 and the foam removal grid packing 7 generally is 1～3 millimeter.
Referring to Fig. 1, the utility model column for smoke purification, the height a of wire packing 8 is generally 50～100 millimeters (being preferably 100 millimeters), the height b of foam removal grid packing 7 is generally 200～600 millimeters (being preferably 400 millimeters), and the height c of dedusting grid packing 3 is generally 200～800 millimeters (being preferably 500 millimeters).Wire packing 8 can use the gas-liquid filteration silk screen of regulation in the China-styled Certain Industry Field standard " HG/T 21618-1998 wire mesh demister ", such as the gas-liquid filteration silk screen of SP, HP, DP or HR type.
Referring to Fig. 1, dedusting grid packing 3, wire packing 8 and foam removal grid packing 7 are installed in the tower body 9 of the utility model column for smoke purification.The diameter d outline of dedusting grid packing 3 and 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 the lower surface of dedusting grid packing 3 and foam removal grid packing 7 is supported in respectively on the support member 2, the upper surface of the upper surface of dedusting grid packing 3 and wire packing 8 compresses with trim ring 4 respectively, with this dedusting grid packing 3 and wire packing 8 and foam removal grid packing 7 is fixed in the tower body 9.(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) that support member 2 and trim ring 4 can use existing column for smoke purification to commonly use.
Cooling and dedusting liquid shower nozzle 5 and absorption liquid shower nozzle 6 in the utility model column for smoke purification 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, 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 each group 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 column for smoke purification generally is stainless steel (such 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.The dedusting grid packing 3 of at first flowing through, stereoscopic grid passage introversion baffling in dedusting grid packing 3 is moving, in the flow process with dedusting grid packing 3 in stripe board collision, and with 5 that spray out downwards by cooling and dedusting liquid shower nozzle, in described stereoscopic grid passage and the cooling and dedusting liquid 12 that flows downward of stripe board fully contact.Flue gas is cooled; Simultaneously, after the contained dust of flue gas is run into stripe board, with in described stereoscopic grid passage and the drop of the cooling and dedusting liquid that flows downward of stripe board contact, accumulate on the upper surface of the stripe board in the dedusting grid packing 3, and the dedusting liquid that is cooled washes away.After flue gas was flowed out by dedusting grid packing 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 further was cooled, dedusting.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 is tilted to lower landing along the upper surface of stripe board, can be entrained in a large number on the wire packing 8 of foam removal grid packing 7 tops by flue gas, 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 purifying smoke outlet 10 at last, is discharged in the atmosphere.
In above-mentioned whole flue gas ash removal-desulfurization-foam removal process, with dust, desulfurization reaction product and the reacted absorption liquid in the cooling and dedusting liquid of crossing, the flue gas that is removed, all accumulate in the bottom of tower body 9, form slurries 14.Slurries 14 are finally discharged outside the tower body 9 continuously by slurries discharge pipe 15.
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-the denitration of the utility model column for smoke purification-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, pending flue gas 11 dust contents in entering dedusting grid packing 3 are higher, the stripe board in the dedusting grid packing 3 arranges in the situation of purge hole 30, when flowing in the stereoscopic grid passage of pending flue gas 11 in dedusting grid packing 3, 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 dedusting grid packing 3.This helps cooling and dedusting liquid that the accumulation of the dust on the described stripe board upper surface and cooling and dedusting liquid drop is washed away, to keep the dust removing effects of dedusting grid packing 3.Stripe board in dedusting grid packing 3 arranges purge hole 30, also helps the pressure drop that reduces dedusting grid packing 3.
Referring to Fig. 2 and Fig. 4 to Fig. 8, also arrange in the situation of purge hole 30 on the 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, 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.Purge hole 30 is set on the stripe board in the foam removal grid packing 7, also is conducive to reduce the pressure drop of foam removal grid packing 7.
Column for smoke purification of the present utility model 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 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 dedusting grid packing (3), the below of dedusting grid packing (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, dedusting grid packing (3) and foam removal grid packing (7) are 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 favours horizontal plane along its length, in dedusting grid packing (3) and the foam removal grid packing (7), 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. column for smoke purification according to claim 1, it is characterized in that: be equipped with purge hole (30) on the stripe board in the dedusting grid packing (3), 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. column for smoke purification according to claim 1 is characterized in that: also be provided with described purge hole (30) on the stripe board in the foam removal grid packing (7).
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 arrange two groups up and down.
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 201220539978 CN202876577U (en) | 2012-10-15 | 2012-10-15 | Flue gas purification tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220539978 CN202876577U (en) | 2012-10-15 | 2012-10-15 | Flue gas purification tower |
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| Publication Number | Publication Date |
|---|---|
| CN202876577U true CN202876577U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220539978 Expired - Lifetime CN202876577U (en) | 2012-10-15 | 2012-10-15 | Flue gas purification tower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214473A (en) * | 2015-09-21 | 2016-01-06 | 大唐环境产业集团股份有限公司 | A kind of high-efficiency desulfurization absorption tower |
| CN105214472A (en) * | 2015-09-21 | 2016-01-06 | 大唐环境产业集团股份有限公司 | The multicycle desulfuration absorbing tower of a kind of double tower Bidirectional spray |
| CN108430645A (en) * | 2015-12-23 | 2018-08-21 | 株式会社Posco | Cyclone separator |
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2012
- 2012-10-15 CN CN 201220539978 patent/CN202876577U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214473A (en) * | 2015-09-21 | 2016-01-06 | 大唐环境产业集团股份有限公司 | A kind of high-efficiency desulfurization absorption tower |
| CN105214472A (en) * | 2015-09-21 | 2016-01-06 | 大唐环境产业集团股份有限公司 | The multicycle desulfuration absorbing tower of a kind of double tower Bidirectional spray |
| CN108430645A (en) * | 2015-12-23 | 2018-08-21 | 株式会社Posco | Cyclone separator |
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Granted publication date: 20130417 |