CN203155231U - Optimized guide sieve mesh column plate - Google Patents
Optimized guide sieve mesh column plate Download PDFInfo
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- CN203155231U CN203155231U CN 201320103404 CN201320103404U CN203155231U CN 203155231 U CN203155231 U CN 203155231U CN 201320103404 CN201320103404 CN 201320103404 CN 201320103404 U CN201320103404 U CN 201320103404U CN 203155231 U CN203155231 U CN 203155231U
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Abstract
The utility model relates to an optimized guide sieve mesh column plate, wherein the optimized guide sieve mesh column plate is formed by combining thin plates with punched sieve holes and guide holes; according to the load difference of liquid and gas flowing through the column plate, the sieve holes and the guide holes have a suitable combination rate and optimized arrangement manner, so that on one hand, a liquid level gradient and a stagnation region when the liquid flows through the column plate are eliminated, and the leakage of the liquid is reduced, on the other hand, the differences of flow speed and flow discharge when gas flows through the column plate from the lower part of the column plate are eliminated, and finally the influence of liquid backmixing and gas backmixing with different concentrations to mass transfer is reduced; and therefore, the column plate is at an optimized operation state, and the mass transfer efficiency of the column plate is greatly improved. The optimized guide sieve mesh column plate can be widely applied to the fields of chemical industry, oil refining, petrochemical industry, medicines, and the like.
Description
[technical field]
The utility model relates to the column plate technical field in the chemical industry mass transfer separation equipment, specifically, is a kind of optimization guiding sieve tray.
[background technology]
Plate column is a kind of important mass transfer separation equipment, is widely used in mass transfer separation processes such as distillation in chemical industry, oil refining, petrochemical industry, the medicine and other fields, absorption, stripping, extraction.Column plate is most important construction unit in the plate column, often is divided into several big classes such as sieve tray, bubble cap plate, valve plate, solid valve column plate, and the application belongs to sieve tray.
Experiment shows: the liquid that flow out from seal pot (1) must overcome flow resistance when flowing across column plate, and difference in height will appear in liquid level on the plate.Column plate is called liquid level drop into and out of the liquid level difference of oral-lateral.Fluid flow is more big, and stroke is more long, and liquid level drop is more big.Because the existence of liquid level drop, in the column plate porch, liquid layer is thicker, and gas speed or gas flow ratio mean values are little; And at the tray outlet place, liquid layer is thinner, and gas speed or gas flow ratio mean values are big, thereby causes the uneven distribution of air-flow.At the position, liquid inlet, narrow-minded, the enrichment degree of gas increases and gained is arranged; And at the liquid outlet position, large-minded, its enrichment degree reduces and loses to some extent.But gained must be not enough to compensate it and lose, and is an adverse factor so inhomogeneous air-flow distributes to mass transfer.The design idea of plate column is to realize uniform cross-flow contact at column plate, thereby wishes to equate at column plate each point gas flow rate, but common sieve tray is difficult to reach.(2) cross section of tower is normally circular, and liquid flows to the other end from an end number of ways.In column plate central authorities, the liquid stroke is shorter and straight, and resistance is little, and flow velocity is big.In the column plate marginal portion, stroke is long and crooked, is subjected to pining down of tower wall again, and resistance is big, thereby flow velocity is little.Therefore, liquid is quite inhomogeneous along the VELOCITY DISTRIBUTION in each paths on the column plate and flow distribution.The column plate central area is quick flow region, and the both sides arcuate region is stagnation region, is speed-change area between the two.Thereby make the liquid that enters column plate simultaneously, the flow velocity difference produces the different time of staying (the contact mass transfer time of gas and liquid) at column plate during because of the process zones of different when leaving column plate, also just must have different concentration.The liquid of variable concentrations will produce back-mixing after advancing downspout, reduce plate efficiency.
Linde sieve tray is a kind of follow-on sieve plate, has than common sieve plate more performance.Domestic and international many companies, research institution and institution of higher learning are studied linde sieve tray.China's utility model patent 91207084.6 discloses a kind of low-temperature fractionating tower linde sieve tray, and this patent except being evenly distributed with sieve aperture, also is shaped on evenly pilot hole spaced apart on column plate.Utilize the gas velocity component in the horizontal direction of pilot hole ejection to promote liquid and accelerate to flow, make that the liquid layer thickness difference reduces on the whole column plate, liquid layer thickness is even, thereby makes that gas bubbling on column plate is even.But this patent adopts in the same way, equally distributed pilot hole, promotes to accelerate mobilization although zones of different liquid had, and can not improve zones of different flow rate of liquid difference on the column plate, the concentration difference that causes because of flow velocity difference.The liquid of variable concentrations will produce back-mixing after advancing downspout, reduce plate efficiency.
Chinese patent 01220319.X and 01134859.3 discloses a kind of high-efficiency guide sieve-plate tower, and this patent except sieve aperture and pilot hole are arranged, also is provided with sloping platform shape projection at the column plate upstream region on column plate, claim the bubbling promoters again.The bubbling promoters makes the corresponding attenuation of the liquid layer of column plate upstream, and the via hole resistance reduces, and becomes to be easy to the vulnerable area that allows air-flow pass, impels liquid once entering column plate energy bubbling.The horizontal center line that pilot hole cracks and column plate horizontal direction parallel make from the complete along continuous straight runs promotion of the gas of pilot hole ejection liquid and advance.Although this patent can be improved gas-liquid contact and mass transfer situation to a certain extent, improved plate efficiency, but sieve aperture or the pilot hole offered on the bubbling promoters of sloping platform shape projection are set, corresponding liquid layer thickness difference, thereby make the thin local gas velocity of liquid layer big, make the thick local gas velocity of liquid layer little, unfavorable to mass transfer, also make the tower plate structure complexity simultaneously.In addition, this patent requires the distribution of pilot hole and corner to advance with the gas promotion liquid from the pilot hole ejection, and the momentum that passes to liquid overcomes the principle layout that the needed momentum of advance resistance equates with liquid.This kind arrangement method is feasible in theory, but actual conditions are that to determine that liquid overcomes the required resistance that advances very difficult, and gas is different with fluid flow, and resistance is also different.Even determined distribution and the corner of pilot hole by certain gas and fluid flow, also difficult when satisfying practical operation gas and fluid flow in 60～120% common operating flexibilities, all be in the ideal operation state.
China's utility model patent 91215151102 guide float valve trays and 96229716.X Combined Lead Floating Valve Tray recognize that early pilot hole is to eliminating gradient of liquid level and stagnation region on the column plate, reduce leak of liquid, improving gas evenly distributes, reduce liquid dispersion and gas backmixing mass transfer is played an important role, and in industry, be used widely.
Because sieve tray is just opened a little sieve apertures at column plate, and does not have other assembly, so it is simple in structure, easy accessibility, weight is lighter, and cost is lower.The cost of sieve tray is equivalent to 40～50% of bubble cap plate, 60～70% of valve plate.Have anti-obstruction and anti-polymerization in addition, be particularly suitable for solid particle, crystallization is arranged, easily polymerization, viscosity is big, dirt is many gas-liquid mass transfer separation system.
[utility model content]
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of optimization guiding sieve tray is provided; Be the advantage of pilot hole in comprehensive sieve tray and the guide float valve tray, overcome the existing shortcoming of existing guiding sieve tray, designed a kind of optimization guiding sieve tray, it is combined by sieve aperture and pilot hole, can be according to the difference of the liquids and gases of the column plate of flowing through load, sieve aperture and pilot hole have a suitable combination ratio and optimize arrangement form, thereby gradient of liquid level and stagnation region when on the one hand eliminating liquid and flowing through column plate, reduce leak of liquid, flow velocity and flow difference when eliminating gas from column plate below process column plate on the other hand, finally reach reduction variable concentrations liquid dispersion and gas backmixing to the influence of mass transfer, make column plate be in the mode of operation of optimization, improve the mass-transfer efficiency of column plate greatly.Can be widely used in chemical industry, oil refining, petrochemical industry, medicine and other fields.
The purpose of this utility model is achieved through the following technical solutions:
A kind of optimization guiding sieve tray is characterized in that, by punching out the thin plate of sieve aperture and pilot hole combine; Zone and the arcuate region of column plate mainly just advanced in the zone of punching out pilot hole at liquid, form the butterfly of launching dipteron and arrange; The zone of punching out pilot hole not on the column plate, evenly punching out sieve aperture.
Described pilot hole is the planar projection of high ejecting plate, and one or more surfaces cracks, and the shape of seam can be various ways such as trapezoidal, rectangle, ligulate, triangle, makes in the seam blow gas promote liquid and flows along the column plate horizontal direction.Zone and the arcuate region of column plate mainly just advanced in the zone of punching out pilot hole at liquid, form the butterfly of launching dipteron and arrange, and this zone can not punching out sieve aperture, or punching out sieve aperture sparsely.Approach or surpass 50m if column plate length approaches or surpass on 2000mm or the column plate liquid flowing strength
3During/h.m, need to increase gas to the thrust of liquid, to eliminate gradient of liquid level at row or the multiple row pilot hole of arranging perpendicular to the column plate middle part of liquid flow direction.
Described a kind of zone of punching out pilot hole not on the guiding sieve tray of optimizing, even punching out sieve aperture, sieve aperture is generally circle, and diameter is 0.1～30mm.The sieve aperture of punching out and liquid flow direction preferentially adopt the triangle cross-flow to arrange, or adopt other forms such as square, rhombus, rectangle to arrange.
The described pilot hole area that cracks accounts for 5～20% of total open area on the column plate.Difference according to the liquids and gases of the column plate of flowing through load, sieve aperture and pilot hole have a suitable combination ratio and optimize arrangement form, thereby gradient of liquid level and stagnation region when on the one hand eliminating liquid and flowing through column plate, reduce leak of liquid, flow velocity and flow difference when eliminating gas from column plate below process column plate on the other hand, finally reach and reduce variable concentrations liquid dispersion and gas backmixing to the influence of mass transfer, make column plate be in the mode of operation of optimization, improve the mass-transfer efficiency of column plate greatly.
Compared with prior art, good effect of the present utility model is:
This application is improved the liquid that just flows into column plate is flowed forward accelerating under the effect of pilot hole blow gas, greatly reduces liquid and when mobile naturally across column plate be to overcome column plate that flow resistance produces into and out of the liquid level drop of oral-lateral.Because the reducing even eliminate of liquid level drop, oneself is to the exit in the column plate porch, liquid layer thickness is about the same, thereby at column plate entrance area and exit region, gas speed or gas flow approach, thereby eliminate the uneven distribution of air-flow, minimizing variable concentrations difference gas before entering the last layer column plate mixes the influence to mass transfer effect.
In the column plate marginal portion, as the cambered plate part, the liquid stroke is long and crooked, is subjected to pining down of tower wall again, and resistance is big.The utility model is in the stroke difference of cambered plate part according to liquid, increase pilot hole quantity, make from pilot hole blow gas convection cell and accelerate, thereby make that the distribution of flow quantity in each paths is uniformly, just makes liquid time of staying on column plate equate.Reduce through strength of fluid difference behind the different paths, minimizing variable concentrations difference liquid after entering downspout mixes the influence to mass transfer effect.
The utility model overcomes the irrationality of the even cloth pilot hole of prior art, and just entered the column plate zone at liquid and set up the bubbling promoters and make the tower plate structure complexity, be feasible in theory by arrange distribution and the corner of pilot hole of momentum equal principle, but actual conditions are to determine that liquid overcomes many defectives such as the required resistance that advances is very difficult.
Advantage of the present utility model: this optimizes guiding sieve tray, punching out sieve aperture on column plate not only, and at column plate upper punch pilot hole processed.Pilot hole is the planar projection of high ejecting plate, and one or more surfaces cracks, and the shape of seam can be various ways such as trapezoidal, rectangle, ligulate, triangle, makes in the seam blow gas promote liquid and flows along the column plate horizontal direction.Zone and the arcuate region of column plate mainly just advanced in the zone of punching out pilot hole at liquid, form the butterfly of launching dipteron and arrange, and this zone can not punching out sieve aperture, or punching out sieve aperture sparsely.Approach or surpass 50m if column plate length approaches or surpass on 2000mm or the column plate liquid flowing strength
3During/h.m, need to increase gas to the thrust of liquid, to eliminate gradient of liquid level at row or the multiple row pilot hole of arranging perpendicular to the column plate middle part of liquid flow direction.The bubbling zone of punching out pilot hole not, evenly punching out sieve aperture.The sieve aperture of punching out and liquid flow direction preferentially adopt the triangle cross-flow to arrange, or adopt other forms such as square, rhombus, rectangle to arrange.Difference according to the liquids and gases of the column plate of flowing through load, sieve aperture and pilot hole have a suitable combination ratio and optimize arrangement form, thereby gradient of liquid level and stagnation region when on the one hand eliminating liquid and flowing through column plate, reduce leak of liquid, flow velocity and flow difference when eliminating gas from column plate below process column plate on the other hand, finally reach and reduce variable concentrations liquid dispersion and gas backmixing to the influence of mass transfer, make column plate be in the mode of operation of optimization, improve the mass-transfer efficiency of column plate greatly.
[description of drawings]
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing of the A-A view of Fig. 1;
Fig. 3 is the partial enlarged drawing of the B-B view of Fig. 2;
Fig. 4 is the arrange partial enlarged drawing of C view of sieve aperture among Fig. 1.
Being labeled as among the figure: 1, rectangular slab; 2, cambered plate; 3, sieve aperture; 4, pilot hole; 5, seal pot (liquid receiving area); 6, down-flow plate (falling the liquid zone); L1, L2, H are respectively the last bottom width of trapezoidal seam in the pilot hole A-A view, following bottom width and height; W1, W2, R are respectively the last bottom width in the pilot hole B-B view, following bottom width and transition arc radius.
[specific embodiment]
Below provide the utility model a kind of specific embodiment of optimizing the guiding sieve tray.
Embodiment 1
See also accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, a kind of optimization guiding sieve tray is characterized in that column plate is made up of two rectangular slabs 1 and two cambered plates 2, punching out sieve aperture 3 and strip pilot hole 4 on the plate.The liquid that flows out from seal pot 5 fully contacts with the gas of ejection from sieve aperture 3 or strip pilot hole 4 across column plate, flows into the seal pot 5 of lower floor's column plates with laggard downspout 6 finishing mass transfer, then repeats to begin the mass transport process on new one deck column plate.
Described sieve aperture 3, punching out on column plate, diameter is 0.1～30mm, is generally 3～15mm.
Described pilot hole 4 is the planar projection of high ejecting plate, and one side is cracked, and being shaped as of seam is trapezoidal, makes in the seam blow gas promote liquid and flows along the column plate horizontal direction.Zone and the arcuate region of column plate mainly just advanced in the zone of punching out pilot hole at liquid, form the butterfly of launching dipteron and arrange, and this zone can not punching out sieve aperture, or punching out sieve aperture sparsely.
Described pilot hole 4 is the planar projection of high ejecting plate, and one side is cracked, and being shaped as of seam is trapezoidal.The last bottom width L1 of the trapezoidal seam of pilot hole A-A view is 3～48mm, and the following bottom width L2 of seam is 5～50mm, and stitching high H is 0.5～6mm.
Described pilot hole 4 is the planar projection of high ejecting plate, and one side is cracked, and being shaped as of seam is trapezoidal.The last bottom width W1 of pilot hole B-B view is 1～10mm, and the following bottom width W2 of seam is 5～30mm, but must guarantee W2＞W1, and transition arc radius R is W2-W1.
Described a kind of zone of punching out pilot hole not on the guiding sieve tray of optimizing, even punching out sieve aperture 3, diameter is 0.1～30mm, is generally 3～15mm.The sieve aperture of punching out and liquid flow direction adopt the triangle cross-flow to arrange.
Described a kind of all pilot holes area that cracks of optimizing on the guiding sieve tray accounts for 5～20% of total open area on the column plate.
Described a kind of optimization guiding sieve tray is made by metal material, and thickness is 0.5～6mm, is generally 2～3mm.Also can be made by special nonmetallic materials.
The said pilot hole of being located on the column plate among Fig. 1 except Fig. 2 and opening form shown in Figure 3, can also be various ways such as rectangle, ligulate, triangle, but must guarantee that the liquid flow path direction is consistent on pilot hole opening direction and the column plate.The zone that dotted line surrounds among Fig. 1 is for arranging the zone of sieve aperture and pilot hole.
The above only is preferred embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model design; can also make some improvements and modifications, these improvements and modifications also should be considered as in the protection domain of the present utility model.
Claims (4)
1. optimize the guiding sieve tray for one kind, it is characterized in that, by punching out the thin plate of sieve aperture and pilot hole combine; Zone and the arcuate region of column plate mainly just advanced in the zone of punching out pilot hole at liquid, form the butterfly of launching dipteron and arrange; The zone of punching out pilot hole not on the column plate, evenly punching out sieve aperture.
2. a kind of optimization guiding sieve tray as claimed in claim 1, it is characterized in that, described pilot hole is the planar projection of high ejecting plate, one or more surfaces cracks, a kind of form in trapezoidal, rectangle, ligulate, the triangle of being shaped as of seam makes in the seam blow gas promote liquid and flows along the column plate horizontal direction.
3. a kind of optimization guiding sieve tray as claimed in claim 1 is characterized in that, the zone of punching out pilot hole not on the column plate, and even punching out sieve aperture, sieve aperture be circle, diameter is 0.1～30mm; The sieve aperture of punching out and liquid flow direction adopt the triangle cross-flow to arrange, or adopt square, rhombus, other form of rectangle to arrange.
4. a kind of optimization guiding sieve tray as claimed in claim 1 is characterized in that, the pilot hole area that cracks accounts for 5～20% of total open area on the column plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320103404 CN203155231U (en) | 2013-03-07 | 2013-03-07 | Optimized guide sieve mesh column plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320103404 CN203155231U (en) | 2013-03-07 | 2013-03-07 | Optimized guide sieve mesh column plate |
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| CN203155231U true CN203155231U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320103404 Expired - Lifetime CN203155231U (en) | 2013-03-07 | 2013-03-07 | Optimized guide sieve mesh column plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281996A (en) * | 2017-07-05 | 2017-10-24 | 樊晓光 | Turhogrid orifice column riddle pore structure and the gas-liquid convection form of structure formation |
| CN109771982A (en) * | 2019-02-25 | 2019-05-21 | 江苏沃德凯环保科技有限公司 | A kind of method and device preventing distillation fouling |
| CN110787477A (en) * | 2019-11-18 | 2020-02-14 | 沈阳派司钛设备有限公司 | Novel titanium-molybdenum-nickel tower device for butanone oxime |
-
2013
- 2013-03-07 CN CN 201320103404 patent/CN203155231U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281996A (en) * | 2017-07-05 | 2017-10-24 | 樊晓光 | Turhogrid orifice column riddle pore structure and the gas-liquid convection form of structure formation |
| CN109771982A (en) * | 2019-02-25 | 2019-05-21 | 江苏沃德凯环保科技有限公司 | A kind of method and device preventing distillation fouling |
| CN109771982B (en) * | 2019-02-25 | 2023-09-22 | 江苏沃德凯环保科技有限公司 | Method and device for preventing distillation scaling |
| CN110787477A (en) * | 2019-11-18 | 2020-02-14 | 沈阳派司钛设备有限公司 | Novel titanium-molybdenum-nickel tower device for butanone oxime |
| CN110787477B (en) * | 2019-11-18 | 2023-08-25 | 沈阳派司钛设备有限公司 | Novel titanium molybdenum nickel tower device for butanone oxime |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
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| CX01 | Expiry of patent term |