CN104607136A - Spindle-shaped structured packing - Google Patents
Spindle-shaped structured packing Download PDFInfo
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- CN104607136A CN104607136A CN201310540371.4A CN201310540371A CN104607136A CN 104607136 A CN104607136 A CN 104607136A CN 201310540371 A CN201310540371 A CN 201310540371A CN 104607136 A CN104607136 A CN 104607136A
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- spindle
- structured packing
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- groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
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- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention discloses a spindle-shaped structured packing, which comprises at least a packing layer comprising a plurality of horizontally-placed spindle-shaped special-shaped pipes connected in parallel, wherein the plurality of the horizontally-placed spindle-shaped special-shaped pipes connected in parallel form a plurality of parallel channels with collection sections, laryngeal orifices and dispersion sections, the cross section of the spindle-shaped special-shaped pipe is the spindle shape, the top portion and the lower portion of the spindle-shaped special-shaped pipe are the arc shapes, and the radius of the arc on the top portion is larger than the radius of the arc on the lower portion. Compared with the existing structured packing, the spindle-shaped structured packing of the present invention has advantages of high mass transfer efficiency, simple structure, small size, fouling resistance and low pressure drop, has less gas-phase liquid foam entrainment after the mass transfer reaction, is suitable for the gas-liquid two-phase mass transfer and reaction processes, especially for the dust removal and desulfurization treatment of flue gas and process exhaust gas, and can be widely used in the fields of petrochemical industry, environmental protection and the like.
Description
Technical field
The present invention relates to a kind of spindle structured packing, be applicable to dedusting and gas-liquid mass transfer and course of reaction, be particularly useful for flue gas and the process of process tail gas dust-removal and desulfurizing, the field such as petrochemical industry and environmental protection can be widely used in.
Background technology
Packed tower, as a kind of traditional gas, liquid mass transfer apparatus, grows a lot in recent years, and due to updating of filling-material structure, in a lot of production process, packed tower instead of traditional plate column.The filler that packed tower in current gas, liquid mass transfer apparatus adopts mainly is divided into random packing and the large class of structured packing two.Random packing is the granule one by one with certain geometrical shape and size, is generally deposited in a random way in tower, is also called dumped packing or granular filler.Random packing is different according to design feature, can be divided into again ring packing, saddle packing, ring saddle packing and Ball-type packing etc.Comparatively typical dumped packing comprises Raschig ring, Pall ring, cascade ring etc.But because the bulk density of random packing is comparatively large, the load-carrying of tower load is large, and gas-liquid distribution is poor, and mass-transfer efficiency is low, and resistance is large, and flux is little, easily blocks, and makes the life cycle of equipment shorten.
Structured packing is by certain geometric arrangements, the filler neatly piled up.Structured packing kind is a lot, can be divided into grid packing, ripple packing, Impulse packing etc. according to its geometry.
Grid packing forms through certain principle combinations with bar element body, has various structures form.The specific area of grid packing is lower, is mainly used in requiring that pressure drop is little, load is large and the occasion such as anti-blocking.The structured packing overwhelming majority industrially applied is ripple packing, the discoid filler that it is made up of many corrugated sheets, and there are 30 ° and 45 ° two kinds in the inclination angle of ripple and tower axle, and during assembling, adjacent two corrugated platings are oppositely by folded.Each dish filler is vertically loaded in tower, staggered 90 ° of arrangements between two adjacent dish fillers.The shortcoming of ripple packing be unsuitable for process viscosity greatly, be easily polymerized or have the material of suspension, and handling, cleaning difficulty, cost is high.
Impulse packing is individual by the hollowed out prism of band necking down, by a kind of structured packing that certain way is assembled.Impulse packing assembling after, can be formed band necking down porous prismatic passage, its vertical surface current road alternating contractions and expansion, gas-liquid two-phase by time produce strong turbulence.In necking segment, gas speed is the highest, and turbulence is violent, thus strengthening mass transfer.At expanding reach, gas speed reduces to minimum, realizes the separation of two-phase.The alternately repetition that runner shrinks, expand, achieves " pulse " mass transport process.The feature of Impulse packing is that treating capacity is large, and pressure drop is little, is the ideal filler of rectification under vacuum.Because its excellent liquid-distribution property makes enlarge-effect reduce, therefore be specially adapted to the occasion of large tower diameter.
Patent 201120285362.1 discloses a kind of regular corrugation filler, main on the dual-side that regular corrugation filler sheet is corresponding, be respectively arranged with lateral opening band, lateral opening bring be provided with lateral opening, when the regular corrugation filler sheet with lateral opening band forms plate shape filling with the superposition of inclination angle rightabout, when this plate shape filling is assembled in stuffing rectification column and forms filling batch, enter gas-liquid fluid in stuffing rectification column in the gas-liquid two-phase counter-current flow process of layer and interlayer, light gas can move upward along lateral opening straight line, heavy liquid is along lateral opening linear downward motion, gas-liquid flux is improved with this, but although this structure not easily blocks, but mass-transfer efficiency declines.
Patent CN1054018A discloses two kinds of pulse corrugated fillers, and a kind of is pulse corrugated filler with waveform pulse cell cube, is characterized in: concavo-convex pulse unit body be ordered in continuously and in the same manner wavy channel domatic on.Another kind is the pulse corrugated filler with fusiformis pulse unit body, and be characterized in that the recessed cell cube of fusiformis pulse is arranged on the crest line of crest discontinuously, the convex cell cube of fusiformis pulse is arranged on the crest line of trough discontinuously.The first filler above-mentioned utilizes concavo-convex cell cube to realize gas-liquid shrinkage expansion motion to a certain degree near close filler corrugated surface, but the complex manufacturing process of filler, filling intensity is poor, cannot eliminate packing layer interfacial resistance; The second filler is substantially identical with common structured packing structure, only at filler peak, paddy place utilizes local deformation to produce the local turbulence of gas-liquid, to raising packing efficiency without substantial role.
Therefore, the structured packing structure of development of new, solves current structured packing Problems existing in actual applications, has very important significance for raising mass-transfer efficiency.
Summary of the invention
The technical problem to be solved in the present invention is, for the deficiencies in the prior art, provides a kind of spindle structured packing.A kind of spindle structured packing of the present invention is compared with existing structured packing, there is mass-transfer efficiency high, structure is simple, volume is little, ant-scaling, pressure drop is little, the feature that after mass transfer reaction, gas phase liquid foam entrainment is few, be applicable to gas-liquid mass transfer and course of reaction, be particularly useful for flue gas and the process of process tail gas dust-removal and desulfurizing, the field such as petrochemical industry and environmental protection can be widely used in.
The invention provides a kind of spindle structured packing, it comprise at least one deck by some parallel connections, packing area that the spindle special pipe of horizontal positioned is formed, described some parallel connections, the spindle special pipe of horizontal positioned constitute multiple parallel channels with collection section, aditus laryngis and dispersion section.Spindle structured packing can be made into one or is divided into some pieces of block combiner to use.
In spindle structured packing of the present invention, the cross section (i.e. end face) of described spindle special pipe is spindle, and its top and bottom are circular arc, and middle part is also circular arc, and the radius of its top arc is greater than the radius of bottom circular arc, form the spindle of " the large following of top is little ".The top of spindle special pipe is arc surface, by the dust that is conducive to containing in gas under hygrometric state, under the brushing of self gravitation and gas phase, by the downward landing of this slip flow regime, thus avoids channel blockage phenomenon occurs.
Two end faces of described spindle special pipe can be closed or not close.
In spindle structured packing of the present invention, preferably on the both sides tube wall of spindle special pipe bottom, offer groove, described groove has certain inclination angle.The groove that special pipe both sides tube wall is offered, can be symmetrical, and the lower end of symmetrical groove can be communicated with, and also can not be communicated with.And the upper end starting point of groove is preferably lower than the phase tangent line of downside tube wall and the circular arc tube wall on both sides.
The groove that both sides, spindle special pipe bottom tube wall is offered, after the outflow aditus laryngis that wall flow liquid drips, blows lower drop in gas phase and is blown and enter groove, and realize coalescence in groove, thus can eliminate entrainment, realize gas-liquid separation.
Spindle special pipe of the present invention structured packing, the some special pipes due to parallel connection define some passages with collection section, aditus laryngis and dispersion section.When gas, liquid and dust and when flowing to into this packing area, the top of special pipe is circular arc, and dust is not easily piled up.First gas-liquid two-phase will enter collection section (aisle spare contraction), and gas velocity increases, and realizes solution dispersion, and the specific surface area of liquid phase increases, and grit attachment is moistening.And after aditus laryngis, gas velocity declines rapidly.In the process, a large amount of dust contained in gas, due to the change of gas velocity, realize mud and drip coalescence, and hygrometric state dust along interface landing, thus will realize dedusting function.
And the gas of high temperature and spray liquid when flowing to into packing area, first under the strength dissection of high-speed gas, realize the dispersion of liquid, obtain larger surface area; After entering collection section, the atomic drop of dispersion, under the contention effect of high-speed gas, due to the ductility of water, will be attached on tube wall and form liquid film, achieve coalescence and the samming process of drop; When liquid film is by aditus laryngis, due to the further increase of gas velocity, create strong compressing and dissection again to liquid film, liquid film is thinning further, creates twice dispersing effect; And when liquid film during past current downflow, is clamp-oned in groove by gas again, achieved coalescence again on the tube wall of two side lower parts of spindle special pipe, and the continuous wire of final one-tenth is by dripping bottom spindle special pipe, thus eliminate entrainment.
Spindle structured packing of the present invention, due to its structure having, is particularly suitable for gas, especially dusty gas and liquid and flow or counter current contacting mass transport process.When gas and liquid also flow from top to bottom and flow to into structured packing of the present invention, the conventional speeds of gas-solid-liquid three-phase difference can be utilized to realize the dedusting of dusty gas and react with liquid mass transfer.And, owing to only comprising aditus laryngis but not trunnion in the passage that spindle special pipe is formed, its Pressure Drop is significantly reduced.
Compared with prior art, a kind of spindle structured packing of the present invention has the following advantages:
(1) be made up of the spindle special pipe of some horizontal positioned in parallel, defining multiple parallel channels between some spindle special pipes, have collection section, aditus laryngis and dispersion section, take gas phase as continuous phase, liquid phase is decentralized photo, obtains higher specific area and realizes mass transfer reaction process.
(2) spindle special pipe cross section top (on) portion is circular arc, it has suitable angle of repose, and hygrometric state dust under the brushing of self gravitation and gas phase, is easy to downward landing, therefore filler of the present invention not easily blockage phenomenon by this slip flow regime.
(3) on the downside of spindle special pipe, tube wall has some grooves, significantly adds the surface area of unit volume filler on the one hand, improves mass transfer ability; On the other hand, the groove offered also serves the effect making drop coalescence and water conservancy diversion; After wall flow liquid drip goes out aditus laryngis, blow lower inflow groove at gas and realize coalescence, thus eliminate entrainment, namely also achieve gas-liquid separating function.
(4) structured packing of the present invention is made up of the spindle special pipe of " the large following of top is little ", and after the afterbody of filler is elongated, more will be conducive to the Pressure Drop reducing filler, this is also the advantage not available for other fillers.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of spindle structured packing of the present invention.
Fig. 2 is spindle special pipe groove position of the present invention schematic diagram.
Fig. 3 is spindle special pipe trench cross section figure of the present invention.
Fig. 4 is the structural representation of a kind of spindle structured packing (having two-layer spindle special pipe) of the present invention.
In Fig. 1: 1, spindle special pipe, 2, pull bar, 3, housing, 4, flange, 5, wall of reactor, 6, collection section, 7, aditus laryngis, 8, dispersion section, 9 grooves.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, spindle structured packing of the present invention is comprised at least one deck and is connected by pull bar 2 by the spindle special pipe 1 of some horizontal positioned in parallel, spindle special pipe 1, and be fixed on housing 3.Wall of reactor 5 arranges support lugn 4, for installing fixing spindle structured packing.Spindle special pipe 1 is together in series by some pull bars 2, and the spindle special pipe after series connection is fixed on housing 3 by pull bar 2.Spindle structured packing of the present invention can be made into one or is divided into some pieces of block combiner to use, and is fixed in wall of reactor 5.Define many parallel channels between some parallel spindle special pipes 1, constitute gas liquid two-phase flow passage, described passage comprises collection section 6, aditus laryngis 7 and dispersion section 8.
In spindle special pipe of the present invention structured packing, the cross section of special pipe is spindle, and its top, bottom (bottom) are circular arc, and the radius of top arc is greater than the radius of bottom circular arc, thus forms the little spindle-type α-Fe2O3 of the large following of top.
The top angle theta of described spindle special pipe 1 is generally 21 ° ~ 45 °, and be preferably 23 ~ 36 °, angle general α in bottom is 14 ° ~ 23 °, preferably 18 ° ~ 20 °.Top and bottom arc radius r are generally 5 ~ 35mm, preferably 20 ~ 30mm, and centre position arc radius R is generally 100 ~ 280mm, preferably 160 ~ 240mm.The height H of spindle special pipe is generally 80 ~ 200mm, preferably 100 ~ 160mm.
The aditus laryngis spacing B of the passage that some spindle structured packings are formed is generally 5 ~ 60mm, is preferably 10 ~ 25mm.
As shown in Figure 2, the bottom tube wall of the spindle special pipe 1 of structured packing of the present invention can also have groove 9, and the cross section of groove 9 can be triangle.Can be 1 ~ 6mm, preferably 2 ~ 4mm as gash depth h, the separation L of groove can be generally 5 ~ 60mm, preferably 10 ~ 26mm, and groove angle β is generally 5 ° ~ 20 °, preferably 8 ° ~ 16 °.Groove on the tube wall of each spindle special pipe both sides can be uniformly distributed or uneven distribution, simultaneously can also be symmetrical on the tube wall of both sides, and symmetrical groove lower end can be communicated with.Described groove preferably has certain angle of inclination, and angle of inclination described herein refers to the angle on edge under the bottom of groove and special pipe 1, and described angle of inclination γ is generally 0 ° ~ 45 °, preferably 10 ° ~ 20 °.Described groove has certain inclination angle, will more be conducive to liquid at the coalescence of groove and water conservancy diversion.
As shown in Figure 4, spindle structured packing of the present invention can comprise two-layer above spindle special pipe, for two-layer above special pipe filler, adjacent two-layer spindle special pipe up and down staggered interval shifts to install, and namely the special pipe of lower floor's filler aligns (or corresponding) with the parallel channels that upper strata filler is formed.
Below in conjunction with accompanying drawing, be described: during work to the course of work of structured packing of the present invention, the liquid of spray, under the dissection of high-speed gas, forms liquid phase and the drop of dispersion.The liquid phase of dispersion is under the effect of gas phase, first through collection section, in collection section, liquid phase is accelerated gradually, and reach maximum through aditus laryngis hourly velocity, drop is by coalescence, eventually pass dispersion section, under the effect of gas phase, drop is divided again, and drop surface is upgraded, eliminate concentration difference, mass-transfer efficiency is improved.Relative velocity between collection section and aditus laryngis place gas-liquid two-phase is very large.Drop is atomized under the impact of high velocity air, and gas humidity reaches capacity, and the air film of grit surface attachment is broken through, and grit is wetted, grit and grit or fierce cohesion occurs between grit and water droplet.In dispersion section, air-flow velocity reduces, and pressure gos up, and is that the effect of the nuclei of condensation is accelerated, is condensed into larger dust-laden water droplet, thus dust is captured removal with grit.After wall flow liquid drip goes out aditus laryngis, gas compressing and blow lower drop and be squeezed into groove, realize coalescence, because drop is under the brushing of gas phase, the wall of expansion segment forms liquid film, Liquid film diffusion enters in groove, accelerate the coalescence of liquid phase, reduce entrainment, achieve gas-liquid separation.
Claims (14)
1. a spindle structured packing, it comprise at least one deck by some parallel connections, packing area that the spindle special pipe of horizontal positioned is formed, described some parallel connections, the spindle special pipe of horizontal positioned constitute multiple parallel channels with collection section, aditus laryngis and dispersion section; The cross section of described spindle special pipe is spindle, and its top and bottom are circular arc, and the radius of top arc is greater than the radius of bottom circular arc.
2. according to structured packing according to claim 1, it is characterized in that, the both sides tube wall of spindle special pipe bottom offers groove, the angle of inclination γ of described groove is 0 ° ~ 45 °, preferably 10 ° ~ 20 °.
3. according to structured packing according to claim 1, it is characterized in that, the symmetrical or mal-distribution of the groove offered of described special pipe both sides tube wall.
4. according to structured packing according to claim 3, it is characterized in that, the lower end of described symmetrical groove is communicated with, or is not communicated with.
5. according to structured packing according to claim 1, it is characterized in that, the top angle theta of described spindle special pipe is 21 ° ~ 45 °, preferably 23 ~ 36 °, and bottom angle α is 14 ° ~ 23 °, preferably 18 ° ~ 20 °.
6. according to structured packing according to claim 1, it is characterized in that, described spindle special pipe top and bottom arc radius r are 5 ~ 35mm, preferably 20 ~ 30mm; Centre position arc radius R is 100 ~ 280mm, preferably 160 ~ 240mm.
7. according to structured packing according to claim 1, it is characterized in that, the height H of described spindle special pipe is 80 ~ 200mm, preferably 100 ~ 160mm.
8. according to structured packing according to claim 1, it is characterized in that, the aditus laryngis spacing B of the passage that some spindle structured packings are formed is 5 ~ 60mm, is preferably 10 ~ 25mm.
9. according to structured packing according to claim 2, it is characterized in that, the cross section of described groove is triangle.
10. according to structured packing according to claim 9, it is characterized in that, the degree of depth h of described groove is 1 ~ 6mm, preferably 2 ~ 4mm; The separation L of groove is 5 ~ 60mm, preferably 10 ~ 26mm; Groove angle β is 5 ° ~ 20 °, preferably 8 ° ~ 16 °.
11., according to structured packing according to claim 1, is characterized in that, described spindle structured packing is made one or is divided into some pieces of block combiner to use.
12. according to structured packing according to claim 1, it is characterized in that, described spindle structured packing comprises two-layer above spindle special pipe, and adjacent two-layer spindle special pipe interval shifts to install, and the parallel channels that namely special pipe of lower floor's filler and upper strata filler are formed aligns.
13., according to structured packing according to claim 1, is characterized in that, two end faces of described spindle special pipe can be closed or not close.
14., according to structured packing according to claim 2, is characterized in that, the upper end starting point of described groove is lower than the phase tangent line of downside tube wall with the circular arc tube wall on both sides.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310540371.4A CN104607136B (en) | 2013-11-05 | 2013-11-05 | A kind of spindle structured packing |
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| CN201310540371.4A CN104607136B (en) | 2013-11-05 | 2013-11-05 | A kind of spindle structured packing |
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| CN104607136A true CN104607136A (en) | 2015-05-13 |
| CN104607136B CN104607136B (en) | 2019-06-11 |
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| CN201310540371.4A Active CN104607136B (en) | 2013-11-05 | 2013-11-05 | A kind of spindle structured packing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080463A (en) * | 2015-08-31 | 2015-11-25 | 中国石油天然气集团公司 | Polycondensation reactor for polyester production in continuous or intermittent production device |
| CN107998859A (en) * | 2017-12-21 | 2018-05-08 | 双盾环境科技有限公司 | A kind of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration |
| CN108310949A (en) * | 2018-03-15 | 2018-07-24 | 成都百特万合医药科技有限公司 | Medicament compartment tail gas recovery device |
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| US4328177A (en) * | 1980-08-29 | 1982-05-04 | Procon International Inc. | Vapor-liquid contacting apparatus |
| US4460517A (en) * | 1982-07-08 | 1984-07-17 | Calaceto Ralph R | Compact venturi-type scrubber |
| DE3841642A1 (en) * | 1988-12-10 | 1990-06-13 | Adam Muenzenberger Gmbh | Nozzle grating for gas scrubbers, absorbers and the like and column internal composed thereof |
| CN102657991A (en) * | 2012-05-24 | 2012-09-12 | 深圳市泓耀环境科技发展股份有限公司 | Integrated Venturi air washing device |
| WO2013022346A1 (en) * | 2011-08-10 | 2013-02-14 | Albert Van Duijn | Apparatus and method for contacting a gas and liquid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1003877A2 (en) * | 1980-01-14 | 1983-03-15 | Гродненское производственное объединение "Азот" им.С.О.Притыцкого | Apparatus for distributing phases |
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2013
- 2013-11-05 CN CN201310540371.4A patent/CN104607136B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4328177A (en) * | 1980-08-29 | 1982-05-04 | Procon International Inc. | Vapor-liquid contacting apparatus |
| US4460517A (en) * | 1982-07-08 | 1984-07-17 | Calaceto Ralph R | Compact venturi-type scrubber |
| DE3841642A1 (en) * | 1988-12-10 | 1990-06-13 | Adam Muenzenberger Gmbh | Nozzle grating for gas scrubbers, absorbers and the like and column internal composed thereof |
| WO2013022346A1 (en) * | 2011-08-10 | 2013-02-14 | Albert Van Duijn | Apparatus and method for contacting a gas and liquid |
| CN102657991A (en) * | 2012-05-24 | 2012-09-12 | 深圳市泓耀环境科技发展股份有限公司 | Integrated Venturi air washing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080463A (en) * | 2015-08-31 | 2015-11-25 | 中国石油天然气集团公司 | Polycondensation reactor for polyester production in continuous or intermittent production device |
| CN107998859A (en) * | 2017-12-21 | 2018-05-08 | 双盾环境科技有限公司 | A kind of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration |
| CN108310949A (en) * | 2018-03-15 | 2018-07-24 | 成都百特万合医药科技有限公司 | Medicament compartment tail gas recovery device |
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