CN111714915A - Mixed mass transfer interfacial type experimental-stage rectifying tower - Google Patents
Mixed mass transfer interfacial type experimental-stage rectifying tower Download PDFInfo
- Publication number
- CN111714915A CN111714915A CN202010468988.XA CN202010468988A CN111714915A CN 111714915 A CN111714915 A CN 111714915A CN 202010468988 A CN202010468988 A CN 202010468988A CN 111714915 A CN111714915 A CN 111714915A
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- packing
- mass transfer
- mixed mass
- liquid
- hourglass
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- 238000012546 transfer Methods 0.000 title claims abstract description 25
- 238000012856 packing Methods 0.000 claims abstract description 73
- 239000007788 liquid Substances 0.000 claims description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 238000000926 separation method Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Images
Classifications
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- 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
-
- 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
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/16—Retorts
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention relates to a mixed mass transfer interface type experimental-grade rectifying tower which mainly comprises a tower body and a mixed mass transfer interface type packing structure arranged in the tower body, wherein the mixed mass transfer interface type packing structure comprises high-efficiency random packing, wire mesh corrugated regular packing and an hourglass-shaped frame, and the hourglass-shaped frame is arranged on the outermost layer as a framework of the packing structure.
Description
Technical Field
The invention belongs to the technical field of rectification, and particularly relates to a mixed mass transfer interfacial experimental-grade rectifying tower.
Background
In a precise rectification experiment, in order to improve the separation efficiency and reduce the equipment investment, generally, seamless pipes with diameters within 100mm and different heights are adopted as a tower body, and random packing with convenient use and high efficiency, such as triangular spiral packing, is selected as a mass transfer interface. However, due to the limitation of the diameter of the column, the liquid distribution device applicable to the conventional rectifying column cannot be used in the column, so that the height of the packing layer is far beyond the sectional empirical formula of the random packing layer: H/D = 5-10 (H is the height of the packing layer, and D is the diameter of the packing tower), so that the gas-liquid drift defect is inevitable. However, if all the random packing is replaced by the corrugated structured packing with better mixed flow effect, the separation efficiency is insufficient due to the reduction of the specific surface area (the minimum specific surface area of the conventional triangular spiral packing is 2500 square meters/m for cultivation, while the maximum specific area of the common corrugated structured packing is about 1000 square meters/m for cultivation), so that the problems of tower increase, manufacturing cost increase and the like are caused.
Disclosure of Invention
The invention aims to overcome the defects and provide an experimental-grade rectifying tower with a mixed mass transfer interface, which fully utilizes the characteristic of good mixed flow effect of regular packing while ensuring the separation efficiency by using high-efficiency random packing, thereby realizing the uniform distribution of gas and liquid in each packing layer in the rectifying tower and improving the separation effect of the rectifying tower, and the invention aims to complete the separation by the following technical scheme: the utility model provides a mixed mass transfer interfacial type experimental grade rectifying column, it mainly comprises tower body and the mixed mass transfer interfacial type packing structure of setting in the tower body, its characterized in that mixed mass transfer interfacial type packing structure comprises high-efficient random packing, silk screen ripple regular packing and hourglass shape frame, hourglass shape frame set up outermost as the skeleton of packing structure, silk screen ripple regular packing is installed in the top and the bottom of hourglass shape frame, high-efficient random packing fill in the frame that silk screen ripple regular packing and hourglass shape frame constitute, silk screen ripple regular packing and hourglass shape frame carry out even redistribution to the gas-liquid in the tower to realize the even distribution of gas-liquid in the whole tower.
Preferably, the method comprises the following steps: the wire mesh corrugated structured packing is formed by manufacturing a first stainless steel corrugated sheet and a second stainless steel corrugated sheet with the width not larger than 20mm in a vortex line rotating mode, the vortex line rotates to form a rotating flow channel which diffuses from the edge of the packing tray to the circle center, the flow channel enables liquid in the packing tray to flow annularly along each layer of packing sheets, and the liquid in the whole packing tray is uniformly distributed along the circumferential direction from outside to inside, so that the effect of redistributing the liquid which flows downwards in the upper packing layer and is distributed unevenly is achieved.
Preferably, the method comprises the following steps: the hourglass-shaped frame is a cylinder, the top of the hourglass-shaped frame is provided with an arc-shaped comb-tooth-shaped plate with sawteeth and a folding angle, a circle of stainless steel wire mesh is arranged outside the cylinder, and the plate and the wire mesh are in an hourglass-shaped structure. The top sawtooth structure of this structure and the inside broach structure of rolling over an angle in area have played the effect of water conservancy diversion, avoid liquid toward tower body inner wall gathering.
Preferably, the method comprises the following steps: the high-efficiency random packing is triangular spiral packing.
Compared with the prior art, the invention has the characteristics of reasonable structure, convenient processing, and capability of effectively realizing uniform redistribution of gas and liquid in the rectifying tower and keeping the stable performance of the rectifying tower while ensuring the separation efficiency of the rectifying tower.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
Fig. 2 is a schematic representation of the structure of a mixed mass transfer interfacial filler of the present invention.
Fig. 3 is a physical diagram of the high-efficiency random packing of the invention.
FIG. 4 is a schematic diagram of the construction of a wire mesh corrugated structured packing tray according to the present invention.
Fig. 5 is a schematic view of the configuration of an hourglass-shaped frame according to the present invention.
Detailed Description
The invention will be described in detail below with reference to the following figures: as shown in figure 1, the experimental-grade rectifying tower with mixed mass transfer interface mainly comprises a tower body 11 and a mixed mass transfer interface type filler structure 12.
As shown in fig. 2, the mixed mass transfer interfacial packing structure described in the figure is composed of wire mesh corrugated structured packing 21, high efficiency random packing 22 and hourglass shaped frame 23.
As shown in fig. 3, the high efficiency random packing 22 of fig. 2 is a triangular spiral packing.
As shown in fig. 4, the wire mesh corrugated structured packing 21 shown in fig. 2 is formed by pressing a stainless steel wire mesh as a raw material into a first corrugated sheet 41 and a second corrugated sheet 42 with a width not exceeding 20mm, and processing the corrugated sheets in a vortex line rotating manner to form a rotating flow channel spreading from the edge of the packing tray to the center of the circle. The flow channel in the structural form enables liquid in the packing tray to flow annularly along each layer of packing sheet, and uniform distribution of the liquid in the whole packing tray is achieved from outside to inside along the circumferential direction, so that the effect of redistributing the liquid which flows downwards in the upper packing layer and is unevenly distributed is achieved.
As shown in fig. 5, the hourglass-shaped frame 23 shown in fig. 2 is an arc-shaped comb-shaped plate 51 with saw teeth at the top end and folded angles, which is punched and formed by stainless steel sheets, and is wrapped by a stainless steel wire mesh 52 to form an hourglass-shaped structure. The top sawtooth structure of this structure and the inside broach structure of rolling over an angle in area have played the effect of water conservancy diversion, avoid liquid toward tower body inner wall gathering.
Example (b): a stainless steel pipe with the pipe diameter of 60mm and the height of 10 m is used as a tower body, a mixed mass transfer interface type packing structure disc with the diameter of phi 59mm is matched according to the structure shown in figure 1, high-efficiency random packing filled in the mixed mass transfer interface type packing structure disc adopts 3 multiplied by 3mm triangular spiral packing, the height of the packing layer is 9m, and hydrogen isotopes are rectified and separated under the low-temperature condition. The liquid spraying density ranges from 1.2 to 2.2m, and the gas phase F factor ranges from 0.16 to 0.42 Pa0.5. The theoretical plate number per meter and the pressure drop of the ultrahigh-performance structured packing are calculated through test data. Tests show that the mixed mass transfer interfacial type experimental-grade rectifying tower has 10-13 packing sections per meter of theoretical grade and pressure drop below 0.1Kpa per meter, and compared with a related random packing tower, the mass transfer performance is greatly improved under the condition of not greatly increasing resistance.
Claims (4)
1. The utility model provides a mixed mass transfer interfacial type experimental grade rectifying column, it mainly comprises tower body and the mixed mass transfer interfacial type packing structure of setting in the tower body, its characterized in that mixed mass transfer interfacial type packing structure comprises high-efficient random packing, silk screen ripple regular packing and hourglass shape frame, hourglass shape frame set up outermost as the skeleton of packing structure, silk screen ripple regular packing is installed in the top and the bottom of hourglass shape frame, high-efficient random packing fill in the frame that silk screen ripple regular packing and hourglass shape frame constitute, silk screen ripple regular packing and hourglass shape frame carry out even redistribution to the gas-liquid in the tower to realize the even distribution of gas-liquid in the whole tower.
2. The mixed mass transfer interface type experimental rectification column of claim 1, wherein the wire mesh corrugated structured packing is made by a vortex rotation mode in which a first stainless steel corrugated sheet and a second stainless steel corrugated sheet with a width not greater than 20mm are formed, the vortex rotation forms a rotating flow channel which diffuses from the edge of the packing tray to the center of the circle, the flow channel enables liquid in the packing tray to realize annular flow along each layer of packing sheet, and uniform distribution of liquid in the whole packing tray is realized from outside to inside along the circumferential direction, thereby playing a role in redistributing liquid which flows down in the upper layer of packing layer and has uneven distribution.
3. The mixed mass transfer interface-type experimental rectification column of claim 1 wherein the hourglass-shaped frame is a cylinder having arcuate comb-shaped plates with teeth and folding angles at the top, and a ring of stainless steel wire mesh on the outside of the cylinder, the plates and mesh forming an hourglass-shaped structure, the top teeth and inward folding angles of the comb-shaped structures serving as a flow guide to prevent liquid from collecting toward the inner wall of the column.
4. The mixed mass transfer interface-type experimental stage rectification column of claim 1 wherein said high efficiency random packing is a triangular spiral packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468988.XA CN111714915A (en) | 2020-05-28 | 2020-05-28 | Mixed mass transfer interfacial type experimental-stage rectifying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468988.XA CN111714915A (en) | 2020-05-28 | 2020-05-28 | Mixed mass transfer interfacial type experimental-stage rectifying tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111714915A true CN111714915A (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010468988.XA Pending CN111714915A (en) | 2020-05-28 | 2020-05-28 | Mixed mass transfer interfacial type experimental-stage rectifying tower |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2338194A (en) * | 1998-06-08 | 1999-12-15 | Norton Chem Process Prod | Wall wiper for mass transfer towers |
| CN1321542A (en) * | 2001-02-28 | 2001-11-14 | 南京大学 | Ceramic regular packing multifunctional ring for preventing wall flow |
| CN2661304Y (en) * | 2003-10-28 | 2004-12-08 | 山东华鲁恒升化工股份有限公司 | Wall flow free highly efficient convergence circle |
| EP1593427A1 (en) * | 2004-05-04 | 2005-11-09 | Basf Aktiengesellschaft | Packed columns with flow restricting elements along the column wall |
| DE102004021985A1 (en) * | 2004-05-04 | 2005-11-24 | Basf Ag | Sealing the accumulation of an accumulation pack to the column casing |
| CN101890275A (en) * | 2010-07-21 | 2010-11-24 | 天津市创举科技有限公司 | Method for filling packing into absorption tower |
| CN103463941A (en) * | 2013-09-27 | 2013-12-25 | 南京华基塔业有限公司 | Outer wall flow guide device of built-in tube of packed tower |
| CN103691387A (en) * | 2013-12-13 | 2014-04-02 | 中建安装工程有限公司 | Circularly-arranged catalytic distillation packing |
| CN104689589A (en) * | 2015-02-13 | 2015-06-10 | 杭州杭氧填料有限公司 | Vortex-line self-homogenizing regulation packing tower |
| CN212594063U (en) * | 2020-05-28 | 2021-02-26 | 杭州杭氧填料有限公司 | Mixed mass transfer interface type experimental-stage rectifying tower |
-
2020
- 2020-05-28 CN CN202010468988.XA patent/CN111714915A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2338194A (en) * | 1998-06-08 | 1999-12-15 | Norton Chem Process Prod | Wall wiper for mass transfer towers |
| CN1321542A (en) * | 2001-02-28 | 2001-11-14 | 南京大学 | Ceramic regular packing multifunctional ring for preventing wall flow |
| CN2661304Y (en) * | 2003-10-28 | 2004-12-08 | 山东华鲁恒升化工股份有限公司 | Wall flow free highly efficient convergence circle |
| EP1593427A1 (en) * | 2004-05-04 | 2005-11-09 | Basf Aktiengesellschaft | Packed columns with flow restricting elements along the column wall |
| DE102004021985A1 (en) * | 2004-05-04 | 2005-11-24 | Basf Ag | Sealing the accumulation of an accumulation pack to the column casing |
| CN101890275A (en) * | 2010-07-21 | 2010-11-24 | 天津市创举科技有限公司 | Method for filling packing into absorption tower |
| CN103463941A (en) * | 2013-09-27 | 2013-12-25 | 南京华基塔业有限公司 | Outer wall flow guide device of built-in tube of packed tower |
| CN103691387A (en) * | 2013-12-13 | 2014-04-02 | 中建安装工程有限公司 | Circularly-arranged catalytic distillation packing |
| CN104689589A (en) * | 2015-02-13 | 2015-06-10 | 杭州杭氧填料有限公司 | Vortex-line self-homogenizing regulation packing tower |
| CN212594063U (en) * | 2020-05-28 | 2021-02-26 | 杭州杭氧填料有限公司 | Mixed mass transfer interface type experimental-stage rectifying tower |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 799 Xiangfu Road, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Applicant after: HANGZHOU HANGYANG PACKINGS Co.,Ltd. Address before: 311305 No.99, East Ring Road, Qingshanhu street, Lin'an City, Hangzhou City, Zhejiang Province Applicant before: HANGZHOU HANGYANG PACKINGS Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200929 |
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| RJ01 | Rejection of invention patent application after publication |