CN105854331B - A kind of rectifying tower plates of anti-autohemagglutination - Google Patents
A kind of rectifying tower plates of anti-autohemagglutination Download PDFInfo
- Publication number
- CN105854331B CN105854331B CN201610349118.4A CN201610349118A CN105854331B CN 105854331 B CN105854331 B CN 105854331B CN 201610349118 A CN201610349118 A CN 201610349118A CN 105854331 B CN105854331 B CN 105854331B
- Authority
- CN
- China
- Prior art keywords
- downflow weir
- plate body
- autohemagglutination
- sieve aperture
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000463 material Substances 0.000 claims abstract description 23
- 238000007373 indentation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 15
- 239000012071 phase Substances 0.000 abstract description 11
- 239000000178 monomer Substances 0.000 abstract description 10
- 238000012546 transfer Methods 0.000 abstract description 6
- 230000005587 bubbling Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 230000005669 field effect Effects 0.000 abstract description 4
- 239000007791 liquid phase Substances 0.000 abstract description 3
- 238000006068 polycondensation reaction Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009329 sexual behaviour Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
- B01D3/22—Fractionating columns in which vapour bubbles through liquid with horizontal sieve plates or grids; Construction of sieve plates or grids
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of rectifying tower plates of anti-autohemagglutination, including plate body, the plate body is equipped with downflow weir, and the downflow weir is obliquely installed along the flow direction of material.Downflow weir is obliquely installed by the present invention along the flow direction of material, angle increase between downflow weir and plate body, the unique flow field effect that can be formed, so as to eliminate the flow blind angle between downflow weir and plate body, prevents that easily from polycondensation monomer residence time is long at this and autohemagglutination occurs；In addition, the present invention does not impact plate efficiency, overcome that stream flow gradient on the plate that no weir column plate is formed is big, bubbling is uneven in the liquid phase causes that vapour-liquid is insufficient contact, mass transfer effect is poor and the defects of low separation efficiency for vapour phase, and operating flexibility greatly improves.
Description
Technical field
The present invention relates to rectifying column apparatus field, relates in particular to a kind of rectifying tower plates of anti-autohemagglutination.
Background technology
The all easy autohemagglutination of monomer of many polymer, such as acrylic acid, methyl acrylate, ethyl acrylate, these lists
The preparation process of body usually needs to separate using rectifying column, and the downflow weir of existing rectifying tower plates is vertical-type, this is just
Cause to produce flow blind angle, monomer extended residence time in the intersection of downflow weir and plate body, so that monomer is accumulated and sent out
It is born from poly-, influences normally to produce.
Autohemagglutination occurs in rectifying column for the monomer of easy autohemagglutination in order to prevent, at present frequently with method be use without weir column plate
Or add polymerization inhibitor.
For first method, column plate can cause on column plate that material import and export gradient is larger without downflow weir, and gas inclines under plate
To in from material outlet side bubbling, cause plate efficiency to have reduces by a relatively large margin；For second method, polymerization inhibitor dosage is very few
Inhibition cannot be played, dosage can excessively influence product quality.
The content of the invention
The technical problems to be solved by the invention, which are to provide one kind, prevents that monomer from occurring autohemagglutination and can be at the same time in rectifying column
Maintain good gas-liquid contact, reach rectifying tower plates compared with high separating efficiency.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：A kind of rectifying tower plates of anti-autohemagglutination, bag
Rubbing board body, the plate body are equipped with downflow weir, and the downflow weir is obliquely installed along the flow direction of material.
Further, the angle of inclination of the downflow weir is 30~60 degree.
Further, when the viscosity of material is more than 5cp, angle of inclination >=45 degree of the downflow weir, when sticking for material
When degree is less than 5cp, angle of inclination≤45 degree of the downflow weir
Further, the plate body is equipped with more than one sieve aperture, and the cross section of the sieve aperture is along from top to bottom
Direction gradually increase.
Further, the sieve aperture is in truncated cone-shaped.
Further, the angle between the busbar and axis of the sieve aperture is 60~80 degree.
Further, the percent opening of the sieve aperture is 8~14%.
Further, the sieve aperture determinant is evenly spaced on plate body.
Further, a diameter of 3~5mm of the upper port of the sieve aperture.
Further, the plate body is in discount vibram outlet shape, and the downflow weir is arranged on the indentation, there of plate body.
Beneficial effects of the present invention are：
Downflow weir is obliquely installed by the present invention along the flow direction of material, and the angle between downflow weir and plate body increases
Greatly, the unique flow field effect that can be formed, so as to eliminate the flow blind angle between downflow weir and plate body, prevents easy autohemagglutination
Monomer residence time at this is long and autohemagglutination occurs；Secondly, the present invention does not impact plate efficiency, overcomes no weir
Stream flow gradient is big on the plate that column plate is formed, bubbling is uneven in the liquid phase causes that vapour-liquid is insufficient contact, mass transfer effect for vapour phase
The defects of fruit difference and low separation efficiency.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
In attached drawing the mark of each component for：1 plate body, 11 sieve apertures, 2 downflow weirs.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
Referring to Fig. 1, Fig. 2 and Fig. 3.
A kind of rectifying tower plates of anti-autohemagglutination of the present invention, including plate body 1, the plate body 1 are equipped with downflow weir 2, institute
Downflow weir 2 is stated to be obliquely installed along the flow direction of material.
Inclination described here be for the downflow weir of existing vertical-type, usually, the inclination angle of downflow weir 2
It is 30~60 degree to spend (the α angles in Fig. 1), you can meets the needs of most of easily autohemagglutination material.
Downflow weir 2 is obliquely installed by the present invention along the flow direction of material, the angle between downflow weir 2 and plate body 1
Increase, the unique flow field effect that can be formed, had not only overcome delay, but also eliminated the logistics gradient on column plate, enhanced vapour
Liquid mass-transfer efficiency, so as to eliminate the flow blind angle between downflow weir 2 and plate body 1, prevents from easily stopping at this from polycondensation monomer
Overlong time and autohemagglutination occurs；In addition, the present invention does not impact plate efficiency, overcome on the plate that no weir column plate is formed
Stream flow gradient is big, bubbling is uneven in the liquid phase causes that vapour-liquid is insufficient contact, mass transfer effect is poor and separative efficiency for vapour phase
The defects of low.
In specific implementation, when the viscosity of material is more than 5cp, angle of inclination >=45 degree of the downflow weir 2, when material
When viscosity is less than 5cp, angle of inclination≤45 degree of the downflow weir 2.For the fluid of large viscosity, using larger inclination angle energy
Enough more efficiently prevent from logistics and be detained autohemagglutination, through overtesting, make above-mentioned differentiation, can ensure anti-autohemagglutination effect, while plate is imitated
Rate influences minimum.
In one embodiment of the present of invention, the plate body 1 is in discount vibram outlet shape, its outer contour is by a major arc and straight line
Surround, the downflow weir 2 is arranged on the indentation, there of plate body 1, i.e. the lower end of downflow weir 2 is fixed on the linear edge of plate body 1
Place.This structure causes the region that major arc and straight line surround to enliven bubbling area, to have the function that gas-liquid comes into full contact with mass transfer.
In one embodiment of the present of invention, the plate body 1 is equipped with more than one sieve aperture 11, the horizontal stroke of the sieve aperture 11
Section gradually increases along direction from top to bottom.The sieve aperture 11 enumerated in figure is in truncated cone-shaped.Sieve aperture 11 in figure is signal
Property, actually sieve aperture 11 can up to thousands of, to be specifically determined according to specifically used environment.
For the monomer of easy autohemagglutination, in order to avoid auxiliary device produces dead angle on column plate, sieve-plate tower can only be generally used, and
Valve tower or bubble column are not used, but the sieve aperture gas passage of conventional rectifying tower plates is all the duct of cylinder, so
The vapour phase flowed up is easy to the liquid entrainment on next layer of column plate to last layer column plate, reduces separative efficiency, or even hair
Raw liquid flooding, causes the operating flexibility of rectifying column small, is unfavorable for producing control, is not suitable with the load variations of production.
And the present invention is used as gas passage using the sieve aperture 11 of gradual change, the unique flow field effect that can be formed, vapour phase thing
When stream flows through sieve aperture 11, its droplet carried secretly hits with inclined 11 inner surface of sieve aperture, merges and relies on self gravitation to land
Into the material of following column plate, so that the defects of overcoming conventional sieve-plate tower easily to occur to carry liquid flooding secretly, simultaneously because on sieve aperture 11
The characteristics of small lower big, during vapour phase is run up, the top of sieve aperture 11 reduces, vapour phase flow velocity increase, for liquid on plate
Acted on more preferable sealing gland, the phenomenon of leakage is greatly reduced, improve separative efficiency.Above-mentioned design can effectively prevent liquid flooding
With the generation of the upset operation phenomenon of leakage so that maximum vapour phase speed and minimum of the reversion of operation than normal operating interval
The ratio of vapour phase speed reaches 2-3 times of common sieve-plate tower, greatly increases the operating flexibility of rectifying column.
In specific implementation, the angle (the β angles in Fig. 1) between the busbar and axis of sieve aperture 11 takes 40~90 degree, generally takes 60
~80 degree, leakage is so both can effectively prevent, and the liquid carried secretly collides with up-small and down-big round platform inner face and returns to next piece of tower
Plate, reaches the effect for preventing liquid entrainment well.
In specific implementation, the percent opening of the sieve aperture 11 is 8~14%.Percent opening described here is with the straight of sieve aperture 11
Footpath small end, namely calculated with the upper surface of plate body 1.In this percent opening scope, vapour-liquid mass is abundant, operating flexibility
Greatly.
11 determinant of sieve aperture is evenly spaced on plate body 1.It can so realize and flow up uniformly dividing for vapour phase
Cloth.
A diameter of 3~5mm of the upper port of the sieve aperture 11, i.e. diameter small end port, to form larger vapour phase speed
Rate, avoids liquid from leaking down from sieve aperture.
Corrosion Sexual behavior mode suitable material of the invention according to actual material, non-corrosiveness material can use carbon steel, corrode
Property material can select stainless steel or other special materials.Experiment shows that the rectifying tower plates of the anti-autohemagglutination of the present invention are with following
The lifting of performance：Column plate upper fluid gradient substantially eliminates, and mass-transfer efficiency improves 20-35% than common sieve plate, operating flexibility increase
2-3 times, the delay autohemagglutination phenomenon of monomer material no longer occurs under weir, can meet production requirement well, can not only reduce
Production cost, and greatly reduce the accident rate in operation.
It is one embodiment of the present invention above.It should be pointed out that for those of ordinary skill in the art,
Without departing from the principles of the invention, various modifications and improvements can be made, belongs to protection scope of the present invention.
Claims (6)
1. a kind of rectifying tower plates of anti-autohemagglutination, including plate body (1), the plate body (1) is equipped with downflow weir (2), it is special
Sign is：The downflow weir (2) is obliquely installed along the flow direction of material, and the plate body (1) is equipped with more than one
Sieve aperture (11), the cross section of the sieve aperture (11) gradually increase along direction from top to bottom, and the sieve aperture (11) is in truncated cone-shaped,
Angle between the busbar and axis of the sieve aperture (11) is 60~80 degree, the upper port of the sieve aperture (11) a diameter of 3~
5mm。
2. the rectifying tower plates of anti-autohemagglutination as claimed in claim 1, it is characterised in that：The angle of inclination of the downflow weir (2)
For 30~60 degree.
3. the rectifying tower plates of anti-autohemagglutination as claimed in claim 1 or 2, it is characterised in that：When the viscosity of material is more than 5cp
When, angle of inclination >=45 degree of the downflow weir (2), when the viscosity of material is less than 5cp, the inclination angle of the downflow weir (2)
≤ 45 degree of degree.
4. the rectifying tower plates of anti-autohemagglutination as claimed in claim 1 or 2, it is characterised in that：The percent opening of the sieve aperture (11)
For 8~14%.
5. the rectifying tower plates of anti-autohemagglutination as claimed in claim 1 or 2, it is characterised in that：Sieve aperture (11) determinant is equal
It is even to be arranged on plate body (1).
6. the rectifying tower plates of anti-autohemagglutination as claimed in claim 1 or 2, it is characterised in that：The plate body (1) is in discount vibram outlet
Shape, the downflow weir (2) are arranged on the indentation, there of plate body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610349118.4A CN105854331B (en) | 2016-05-19 | 2016-05-19 | A kind of rectifying tower plates of anti-autohemagglutination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610349118.4A CN105854331B (en) | 2016-05-19 | 2016-05-19 | A kind of rectifying tower plates of anti-autohemagglutination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105854331A CN105854331A (en) | 2016-08-17 |
| CN105854331B true CN105854331B (en) | 2018-05-08 |
Family
ID=56635798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610349118.4A Active CN105854331B (en) | 2016-05-19 | 2016-05-19 | A kind of rectifying tower plates of anti-autohemagglutination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105854331B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114931761A (en) * | 2022-06-20 | 2022-08-23 | 浙江壳邦力特油脂有限公司 | Rectifying tower for oxidized vegetable oil production line |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2130593Y (en) * | 1992-10-15 | 1993-04-28 | 清华大学 | Nozzle perforated plate and gauze wire calotte tower tray for vertical sieve-plate tower |
| CN2179189Y (en) * | 1993-11-30 | 1994-10-12 | 华东理工大学 | Combined angle bar tower plate |
| CN2766927Y (en) * | 2004-12-22 | 2006-03-29 | 同济大学 | Overflow-assisting block-resisting type column tray |
| CN201710990U (en) * | 2010-06-25 | 2011-01-19 | 唐山三友化工股份有限公司 | Variable aperture dual-flow sieve-plate tower |
| CN205659430U (en) * | 2016-05-19 | 2016-10-26 | 安徽理工大学 | Prevent rectifying column column plate of autohemagglutination |
| JP6154503B1 (en) * | 2016-03-01 | 2017-06-28 | 新倉計量器株式会社 | Bag opening device, bag holding structure in the bag opening device, and bag and bag bundle held by the bag holding structure in the bag opening device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06154503A (en) * | 1992-11-20 | 1994-06-03 | Hitachi Ltd | Gas-liquid contact device |
-
2016
- 2016-05-19 CN CN201610349118.4A patent/CN105854331B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2130593Y (en) * | 1992-10-15 | 1993-04-28 | 清华大学 | Nozzle perforated plate and gauze wire calotte tower tray for vertical sieve-plate tower |
| CN2179189Y (en) * | 1993-11-30 | 1994-10-12 | 华东理工大学 | Combined angle bar tower plate |
| CN2766927Y (en) * | 2004-12-22 | 2006-03-29 | 同济大学 | Overflow-assisting block-resisting type column tray |
| CN201710990U (en) * | 2010-06-25 | 2011-01-19 | 唐山三友化工股份有限公司 | Variable aperture dual-flow sieve-plate tower |
| JP6154503B1 (en) * | 2016-03-01 | 2017-06-28 | 新倉計量器株式会社 | Bag opening device, bag holding structure in the bag opening device, and bag and bag bundle held by the bag holding structure in the bag opening device |
| CN205659430U (en) * | 2016-05-19 | 2016-10-26 | 安徽理工大学 | Prevent rectifying column column plate of autohemagglutination |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105854331A (en) | 2016-08-17 |
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