CN104607139A - Common jujube seed-shaped structured packing - Google Patents
Common jujube seed-shaped structured packing Download PDFInfo
- Publication number
- CN104607139A CN104607139A CN201310540460.9A CN201310540460A CN104607139A CN 104607139 A CN104607139 A CN 104607139A CN 201310540460 A CN201310540460 A CN 201310540460A CN 104607139 A CN104607139 A CN 104607139A
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- China
- Prior art keywords
- structured packing
- core shaped
- date core
- special pipe
- shaped
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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
- B01J19/30—Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
-
- 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
- B01J19/30—Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
- B01J19/305—Supporting elements therefor, e.g. grids, perforated plates
-
- 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
- B01J2219/30—Details relating to random packing elements
- B01J2219/302—Basic shape of the elements
- B01J2219/30207—Sphere
- B01J2219/30211—Egg, ovoid or ellipse
Abstract
The present invention discloses a common jujube seed-shaped structured packing, which comprises at least a layer of a plurality of horizontally-placed common jujube seed-shaped special-shaped pipes connected in parallel, wherein the plurality of the horizontally-placed common jujube seed-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 common jujube seed-shaped special-shaped pipe is the common jujube seed shape, the top portion and the lower portion of the common jujube seed-shaped special-shaped pipe are the acute angle triangles, and the middle portion is the arc shape. Compared with the existing structured packing, the common jujube seed-shaped structured packing of the present invention has advantages of high mass transfer efficiency, simple structure, small size, fouling resistance, low pressure drop and less liquid foam entrainment. In addition, the common jujube seed-shaped structured packing of the present invention is suitable for the gas-liquid two-phase mass transfer and reaction processes, especially for the dust removal and desulfurization treatment of high dust content 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 date core shaped 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 date core shaped structured packing.A kind of date core shaped 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 date core shaped structured packing, it comprise at least one deck by some parallel connections, packing layer that the date core shaped special pipe of horizontal positioned is formed, described some parallel connections, the date core shaped special pipe of horizontal positioned constitute multiple parallel channels with collection section, aditus laryngis and dispersion section.Date core shaped structured packing can be made into one or is divided into some pieces of block combiner to use.
In date core shaped structured packing of the present invention, the cross section (i.e. end face) of described date core shaped special pipe is date core shaped, and its top and bottom are acute angle, and middle part is circular arc, forms the date core shaped of " middle circle pointed at both ends ".The middle part of date core shaped 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 date core shaped special pipe can be closed or not close.
In date core shaped structured packing of the present invention, preferably on the both sides tube wall of date core shaped special pipe bottom, offer groove, described groove preferably can have 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, date core shaped special pipe bottom tube wall is offered, is conducive to after wall flow liquid drip goes out aditus laryngis, blows lower drop and is blown and enter groove, and realize coalescence in groove, thus can eliminate entrainment, be convenient to realize gas-liquid separation in gas phase.
Along can also sawtooth be offered under date core shaped special pipe, will be conducive to after wall flow liquid drip goes out special pipe, forming equally distributed Continuous Flow.
Date core shaped special pipe of the present invention structured packing, is defined the passage with collection section, aditus laryngis and dispersion section by some special pipes of parallel connection.When gas, liquid and dust and when flowing to into this packing area, the top of special pipe is sharper, 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 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 date core shaped special pipe, and the continuous wire of final one-tenth is by dripping bottom date core shaped special pipe, thus eliminate entrainment, achieve gas-liquid separation.
Date core shaped structured packing of the present invention, due to its structure having, is particularly suitable for gas, especially high dusty gas and liquid and flow or counter current contacting mass transport process.When high dusty 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 date core shaped special pipe is formed, also make its Pressure Drop significantly reduce.
Compared with prior art, a kind of date core shaped structured packing of the present invention has the following advantages:
1, be made up of the date core shaped special pipe of some horizontal positioned in parallel, defining multiple parallel channels between some date core shaped 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, date core shaped special pipe cross section top (on) portion's point, 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.
3, on the downside of date core shaped special pipe, tube wall has some grooves, significantly adds the surface area of unit volume filler on the one hand, significantly 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, date core shaped grating type of the present invention structured packing is made up of the date core shaped special pipe of " middle circle pointed at both ends ", only aditus laryngis is comprised but not trunnion in the passage that date core shaped special pipe is formed, to more be conducive to the Pressure Drop reducing filler further, this is also the advantage not available for other structured packing.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of date core shaped structured packing of the present invention.
Fig. 2 is date core shaped special pipe groove position of the present invention schematic diagram.
Fig. 3 is date core shaped special pipe trench cross section figure of the present invention.
Fig. 4 is the another kind of structural representation of a kind of date core shaped structured packing (having two-layer date core shaped special pipe) of the present invention.
In Fig. 1: 1, date core shaped 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 illustrated in fig. 1 and 2, date core shaped structured packing of the present invention is comprised at least one deck and is coupled together by pull bar 2 by the date core shaped special pipe 1 of some horizontal positioned in parallel, date core shaped special pipe 1, and be fixed on housing 3.Wall of reactor 5 arranges support lugn 4, for installing fixing date core shaped structured packing.Date core shaped 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 date core shaped special pipes 1, constitute gas liquid two-phase flow passage, described passage comprises collection section 6, aditus laryngis 7 and dispersion section 8.
In date core shaped special pipe of the present invention structured packing, the cross section of special pipe is date core shaped, and its top, bottom (bottom) are acute triangle, and middle part is circular arc, thus forms the date core shaped structure of " broad in the middle pointed at both ends ".
The angle theta of two ends up and down of described date core shaped special pipe 1 is generally 10 ° ~ 45 °, is preferably 20 ~ 30 °.The arc radius R in centre position is generally 100 ~ 300mm, preferably 150 ~ 250mm.The height H of date core shaped special pipe is generally 70 ~ 200mm, preferably 90 ~ 160mm.
The aditus laryngis spacing B of the passage that some date core shaped structured packings are formed is generally 5 ~ 60mm, is preferably 10 ~ 25mm.
As shown in Figure 3, the bottom tube wall of the date core shaped special pipe 1 of structured packing of the present invention can also have groove 9, and the cross section of groove 9 can be the suitable shape such as triangle, rectangle or circular arc, preferred triangle.Can be 1 ~ 6mm, preferably 2 ~ 4mm as gash depth h; The separation L of groove is 5 ~ 60mm, preferably 10 ~ 26mm; Groove angle β is 5 ~ 20 °, preferably 8 ~ 16 °.Groove on the tube wall of each date core shaped 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 its angle of inclination is 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.Along offering sawtooth under date core shaped special pipe, after being conducive to the outflow special pipe that wall flow liquid drips, form equally distributed Continuous Flow.
As shown in Figure 4, date core shaped structured packing of the present invention can comprise two-layer above date core shaped special pipe, for two-layer above special pipe filler, adjacent two-layer date core shaped 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, accelerates the coalescence of liquid phase, reduces entrainment, because sawtooth is offered on date core shaped special pipe 1 time edge, after the outflow special pipe that wall flow liquid is dripped, form equally distributed Continuous Flow, finally achieve gas-liquid separation.
Claims (13)
1. a date core shaped structured packing, it is characterized in that, described structured packing comprise at least one deck by some parallel connections, packing layer that the date core shaped special pipe of horizontal positioned is formed, described some parallel connections, the date core shaped special pipe of horizontal positioned constitute multiple parallel channels with collection section, aditus laryngis and dispersion section; The cross section of described date core shaped special pipe is date core shaped, and its top and bottom are acute triangle, and middle part is circular arc.
2. according to structured packing according to claim 1, it is characterized in that, the both sides tube wall of date core shaped 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 of described date core shaped special pipe and the angle of bottom are 10 ° ~ 45 °, are preferably 20 ° ~ 30 °.
6. according to structured packing according to claim 2, it is characterized in that, the cross section of described groove is triangle.
7. according to structured packing according to claim 6, 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, and groove angle β is 5 ~ 20 °, preferably 8 ~ 16 °.
8. according to structured packing according to claim 1, it is characterized in that, the arc radius R in described date core shaped special pipe centre position is 100 ~ 300mm, preferably 150 ~ 250mm; The height H of date core shaped special pipe is 70 ~ 200mm, preferably 90 ~ 160mm.
9. according to structured packing according to claim 1, it is characterized in that, the aditus laryngis spacing B of the passage that some date core shaped structured packings are formed is 5 ~ 60mm, is preferably 10 ~ 25mm.
10. according to structured packing according to claim 1, it is characterized in that, described date core shaped structured packing is made one or is divided into some pieces of block combiner to use.
11. according to structured packing according to claim 1, it is characterized in that, described date core shaped structured packing comprises two-layer above date core shaped special pipe, and adjacent two-layer date core shaped 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.
12., according to structured packing according to claim 1, is characterized in that, two end faces of described date core shaped special pipe can be closed or not close.
13., 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310540460.9A CN104607139A (en) | 2013-11-05 | 2013-11-05 | Common jujube seed-shaped structured packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310540460.9A CN104607139A (en) | 2013-11-05 | 2013-11-05 | Common jujube seed-shaped structured packing |
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| Publication Number | Publication Date |
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| CN104607139A true CN104607139A (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310540460.9A Pending CN104607139A (en) | 2013-11-05 | 2013-11-05 | Common jujube seed-shaped structured packing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108671733A (en) * | 2018-07-31 | 2018-10-19 | 太仓市宇格明叶环保设备有限公司 | The horizontal intersection exhaust gas washing tower of one kind and its working method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4328177A (en) * | 1980-08-29 | 1982-05-04 | Procon International Inc. | Vapor-liquid contacting apparatus |
-
2013
- 2013-11-05 CN CN201310540460.9A patent/CN104607139A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4328177A (en) * | 1980-08-29 | 1982-05-04 | Procon International Inc. | Vapor-liquid contacting apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108671733A (en) * | 2018-07-31 | 2018-10-19 | 太仓市宇格明叶环保设备有限公司 | The horizontal intersection exhaust gas washing tower of one kind and its working method |
| CN108671733B (en) * | 2018-07-31 | 2023-05-02 | 太仓市宇格明叶环保设备有限公司 | Horizontal cross waste gas washing tower and working method thereof |
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Application publication date: 20150513 |