CN104587946A - Regular catalyst packing for reactive distillation column - Google Patents
Regular catalyst packing for reactive distillation column Download PDFInfo
- Publication number
- CN104587946A CN104587946A CN201510034777.4A CN201510034777A CN104587946A CN 104587946 A CN104587946 A CN 104587946A CN 201510034777 A CN201510034777 A CN 201510034777A CN 104587946 A CN104587946 A CN 104587946A
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- catalyst
- assembly
- reactive distillation
- cloth bag
- filling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/30—Details relating to random packing elements
- B01J2219/304—Composition or microstructure of the elements
- B01J2219/30408—Metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/30—Details relating to random packing elements
- B01J2219/304—Composition or microstructure of the elements
- B01J2219/30475—Composition or microstructure of the elements comprising catalytically active material
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a regular catalyst packing for a reactive distillation column. The regular catalyst packing is composed of a component (A) and a component (B), wherein the component (A) and the component (B) are arrayed alternatively and then banded by a banding piece; the component (A) is composed of a plurality of corrugated packing pieces with meshed structure or pore canal structure; the component (B) is a cloth bag evenly sewed and filled with particle solid catalysts; in each regular catalyst packing, the component (A) and the component (B) are arranged alternatively; the corrugated inclination direction of each two adjacent corrugated packing pieces are reverse. By utilizing the corrugated packing pieces, the whole catalyst packing layer can have enough passage, the gas and liquid can be distributed better in the column, and the dead area and uneven flow of liquid are avoided; by utilizing the catalyst cloth bag, the use amount of catalyst can be reduced; with the combination of the corrugated packing pieces and the catalyst cloth bag, the contact time of the reactant and catalyst is longer, so the reactive distillation process is performed efficiently. Meanwhile, the regular catalyst packing is easy to manufacture and convenient to assemble and disassemble, and the requirements of industrial production can be met.
Description
Technical field
The invention belongs to reaction rectification technique field, be specifically related to a kind of efficient regulation catalytic filling being applicable to reactive distillation column.
Background technology
Reactive distillation is one and reacts and be separated the process of simultaneously carrying out, so the filler in reactive distillation column needs to possess two functions simultaneously: catalysis and gas-liquid mass transfer function, to isolate product in the process of reaction, driving a reaction proceeds, and improves conversion ratio.Wherein, the efficiency of inner-tower filling material structure to reactive distillation processes has a great impact, and the filler of industrial use is mainly divided into random packing and structured packing, and random packing is directly placed in tower, and its pressure drop is comparatively large, and packing layer easily blocks; Structured packing then requires can equilibration catalyst function and gas-liquid mass transfer function.At present, Chinese scholars have developed very eurypalynous catalytic rectification packing, is wherein main mainly with structured packing.
Patent US5275790 puts into the metal box of different structure after proposing the bead Homogeneous phase mixing by catalyst and porous inert material, attempt the space forming certain Liquid Flow with metal framework structure in tower, to reaching good catalytic distillation effect.But there is following shortcoming in this filler: (1) catalyst granules and porous inert bead particle diameter are general less, easily cause packing layer to block in tower; (2), when metal box structure is placed in tower, defective tightness, easily causes the phenomenon such as channel and short circuit of liquid in tower.Propose a kind of new catalytic distillation structure in patent US4242530, catalyst to be placed in Fibre Bag and sack is sewed up, being then curled into cylindrical shape, being filled in catalytic rectifying tower.The catalytic rectification packing of this patent solves the fixation problem of catalyst granules, and then avoids the blocking of packed tower.But because curling catalyst pack arrangement is too tight, and in tower, there is larger gap, the problem such as tower internal drop increase and liquid phase short circuit can be caused.Patent CN 101219400A proposes a kind of catalyst net box, and it is made up of silk screen and level bridge and with anti-overflow baffle plate, catalyst granules is placed in net box, then levels is staggered in tower, and adjacent catalyst net box does not overlap on the same axis.Although this structure eliminates the problem of liquid channel and short circuit, there is the shortcoming that catalyst bed layer resistance is large, catalytic rectifying tower treating capacity is little.
Summary of the invention
The object of the present invention is to provide a kind of efficient regulation catalytic filling being applicable to reactive distillation column, it can extend the time of contact of reactant and catalyst, improves gas liquid contacting efficiency in tower, to strengthen reactive distillation processes.
For achieving the above object, the present invention adopts following technical scheme:
A kind of regulation catalytic filling for reactive distillation column is made up of assembly A and assembly B, after being alternately arranged by assembly A and assembly B, forms described regulation catalytic filling by banding sheet banding;
In each regulation catalytic filling, assembly A and assembly B all vertically places, wherein, assembly A is the corrugated filler tablet with network structure or pore passage structure, assembly B is the cloth bag that particulate solid catalyst is housed, and for Assurance component B is flat, cloth bag must be sewed up side by side.
Described corrugated filler tablet is metal, nonmetal or organic synthesis material, comprises ripple silk net, porous ripple filler, mellapak packing, protruded corrugated sheet packing etc.; The incline direction of its ripple and horizontal direction are 45 ° or 60 ° of angles, and the two panels corrugated filler tablet incline direction of arranged adjacent is contrary.
In assembly B, the filling of particulate solid catalyst is highly 70% ~ 90% of cloth bag height, and cloth bag should vertically be sewed up, and is flat, is convenient to alternately assemble with corrugated filler tablet after making to load catalyst;
Described particulate solid catalyst comprises resin, molecular sieve, glass microsphere;
Described cloth bag adopts the equidistant pouches be sewn into side by side of cloth such as spun silk, nylon, terylene, polypropylene fibre, and its height is consistent with the height of corrugated filler tablet.
Each regulation catalytic filling inner assembly A and assembly B adds up to 20-60 sheet.
Described banding sheet is the thin slice of stainless steel, carbon steel, pottery or plastic material.
In rectifying column during placement of multiple layers filler, stagger between upper and lower two-layer regulation catalytic filling 90 ° and place, to strengthen the distribution of liquid in tower.
the present invention has following advantage:
(1) in each regulation catalytic filling, existing filler has catalyst again, and is formed with banding sheet banding, and the advantage of existing structured packing has catalytic action again, is suitable for using in reactive distillation column.
(2) adjacent two layers corrugated filler tablet is oppositely placed and can be increased vapour-liquid flux, reduce tower internal drop, avoid liquid to occur the imperfect flow phenomenons such as channel, short circuit or dead band, strengthening liquid distributes in tower, to strengthen mass-transfer progress, the problems such as packing layer blocking can be avoided again simultaneously.
(3) catalyst is placed on Bu Baonei by the present invention, because the thickness of cloth bag is less, can reduce the consumption of catalyst, and improve the utilization rate of catalyst.
(4) assembly A and assembly B alternately places by the present invention, by reaction be separated combination, reaction and separation process are carried out in tower simultaneously, reactant and product are constantly separated, and then driving a reaction carries out, improve reaction conversion ratio, reduce equipment investment expense.
Accompanying drawing explanation
Fig. 1 is the top view of the embodiment of the present invention 3 regulation catalytic filling;
Fig. 2 is the sectional view of the embodiment of the present invention 3 regulation catalytic filling;
Fig. 3 is the schematic cross-section of packing layer placement up and down in embodiment 3 tower;
Wherein 1-assembly A, 2-assembly B, 3-banding sheet.
Detailed description of the invention
More being convenient to make content of the present invention understand, below in conjunction with detailed description of the invention, technical solutions according to the invention are described further, but the present invention being not limited only to this.
Embodiment 1
The perforated plate corrugated filler of employing stainless steel is the assembly A of regulation catalytic filling, and its duct order number is 80 orders, and ripple incline direction and horizontal direction are 45 ° of angles; Adopt terylene to make the assembly B of catalyst cloth bag as regulation catalytic filling, and cloth bag is equidistantly stitched into width is side by side the cloth bag of 120mm, then filling glass microballoon is as catalyst in cloth bag, its filling is highly 70% of cloth bag height.The height of catalyst cloth bag and stainless steel ripple silk net is 200mm, and overall length then adjusts according to the diverse location at regulation catalytic filling.Stainless steel ripple silk net and each 10 of catalyst cloth bag in every layer of regulation catalytic filling, totally 20, stainless steel ripple silk net and catalyst cloth packet interleaving are placed and forms columniform structure, then with plastic tab by its banding, form the regulation catalytic filling being used for catalytic rectifying tower.This regulation catalytic filling is installed on the conversion zone of reactive distillation column, tower diameter DN600, the two panels ripple incline direction of arranged adjacent is contrary, and staggers 90 ° between upper and lower two-layer regulation catalytic filling and place.
Embodiment 2
Adopt the assembly A of ripple silk net as regulation catalytic filling of stainless steel, its mesh order number is 30 orders, and ripple incline direction and horizontal direction are 45 ° of angles; Adopt polypropylene fibre to be made into the assembly B of catalyst cloth bag as regulation catalytic filling, and cloth bag is equidistantly stitched into width is side by side the cloth bag of 100mm, then potting resin is as catalyst in cloth bag, its filling is highly 80% of cloth bag height.The height of stainless steel ripple silk net and catalyst cloth bag is 500mm, and overall length then adjusts according to the diverse location at regulation catalytic filling.Stainless steel ripple silk net and each 15 of catalyst cloth bag in every layer of regulation catalytic filling, totally 30, stainless steel ripple silk net and catalyst cloth packet interleaving are placed and forms columniform structure, then use stainless steel thin slice by its banding, form the regulation catalytic filling being used for catalytic rectifying tower.This regulation catalytic filling is installed on the conversion zone of reactive distillation column, tower diameter DN600, the two panels ripple incline direction of arranged adjacent is contrary, and staggers 90 ° between upper and lower two-layer regulation catalytic filling and place.
Embodiment 3
Adopt the assembly A of ripple silk net filler as regulation catalytic filling of stainless steel, its mesh order number is 50 orders, and ripple incline direction and horizontal direction are 60 ° of angles; Adopt nylon cloth to make the assembly B of catalyst cloth bag as regulation catalytic filling, and cloth bag is equidistantly stitched into width is side by side the cloth bag of 80mm, then in cloth bag, fills molecular sieve as catalyst, its filling is highly 90% of cloth bag height.The height of catalyst cloth bag and stainless steel ripple silk net is 300mm, and overall length then adjusts according to the diverse location at regulation catalytic filling.Stainless steel ripple silk net and each 10 of catalyst cloth bag in every layer of regulation catalytic filling, totally 20, stainless steel ripple silk net and catalyst cloth packet interleaving are placed and forms columniform structure, then use stainless steel thin slice by its banding, form the regulation catalytic filling being used for catalytic rectifying tower.This regulation catalytic filling is installed on the conversion zone of reactive distillation column, tower diameter DN600, the two panels ripple incline direction of arranged adjacent is contrary, and staggers 90 ° between upper and lower two-layer regulation catalytic filling and place.
A kind of efficient regulation catalytic filling for catalytic rectifying tower, after the cloth packet interleaving that particulate solid catalyst is housed of the corrugated filler tablet and evenly stitching with network structure or pore passage structure is arranged, be made up of banding sheet banding, there is pressure drop low, treating capacity is large, vapour-liquid is evenly distributed, the advantage that separative efficiency is high.
Fig. 1 is the top view of embodiment 3 regulation catalytic filling, and Fig. 2 is the sectional view of embodiment 3 regulation catalytic filling; Fig. 3 is the schematic cross-section of packing layer up and down in embodiment 3 tower; Wherein 1 is assembly A, and 2 is assembly B, and 3 is banding sheet.Composition graphs 1 ~ Fig. 3 is specifically described the present invention:
As shown in Figure 1, assembly A and assembly B is alternately arranged, and is fixed after the conglobate overall structure of shape by banding sheet, forms regulation catalytic filling of the present invention.As shown in Figure 2, each layer corrugated filler tablet and catalyst cloth bag are all vertically placed, and the ripple struction of corrugated filler tablet and horizontal plane form an angle, and the ripple incline direction of adjacent two panels corrugated filler tablet is contrary.When reactive distillation processes carries out, gas-liquid two-phase repeatedly flows between assembly A and assembly B, and it is inner that partially liq diffuses to catalyst cloth bag through cloth bag, and then react, and after reaction, reactant diffuses to outside catalyst cloth bag again and carries out rectifying separation.The timely separation of product makes reaction move towards positive reaction direction, is conducive to the conversion ratio improving reaction.As shown in Figure 3, between upper and lower two-layer filler, the direction of packing sheet is in 90 °, namely adopts the mode of 90 ° of staggering to place in tower between adjacent two layers regulation catalytic filling.This measure contribute to extend reactant in packing layer with the time of catalyst exposure, the utilization rate of catalyst can be increased; Meanwhile, this laying method provides larger gas-liquid contact surface, mass-transfer progress is strengthened, and then can isolate product better, the carrying out of driving a reaction.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (6)
1. for a regulation catalytic filling for reactive distillation column, it is characterized in that: this regulation catalytic filling is made up of assembly A and assembly B, assembly A and assembly B is alternately arranged and is formed with banding sheet banding afterwards;
Wherein, assembly A is the corrugated filler tablet with network structure or pore passage structure, and assembly B is the cloth bag that particulate solid catalyst is housed evenly sewed up.
2. according to claim 1 for the regulation catalytic filling of reactive distillation column, it is characterized in that: described corrugated filler tablet is metal, nonmetal or organic synthesis material; The incline direction of its ripple and horizontal direction are 45 ° or 60 ° of angles, and the two panels corrugated filler tablet incline direction of arranged adjacent is contrary.
3. according to claim 1 for the regulation catalytic filling of reactive distillation column, it is characterized in that: in assembly B, the filling of particulate solid catalyst is highly 70% ~ 90% of cloth bag height;
Described particulate solid catalyst comprises resin, molecular sieve, glass microsphere;
The material of described cloth bag comprises spun silk, nylon, terylene and polypropylene fibre.
4. according to claim 1 for the regulation catalytic filling of reactive distillation column, it is characterized in that: each regulation catalytic filling inner assembly A and assembly B adds up to 20-60 sheet.
5. according to claim 1 for the regulation catalytic filling of reactive distillation column, it is characterized in that: described banding sheet is the thin slice of stainless steel, carbon steel, pottery or plastic material.
6. according to claim 1 for the regulation catalytic filling of reactive distillation column, it is characterized in that: in rectifying column during placement of multiple layers filler, stagger between upper and lower two-layer regulation catalytic filling 90 ° and place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510034777.4A CN104587946B (en) | 2015-01-24 | 2015-01-24 | A kind of regulation catalytic filling for reactive distillation column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510034777.4A CN104587946B (en) | 2015-01-24 | 2015-01-24 | A kind of regulation catalytic filling for reactive distillation column |
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| Publication Number | Publication Date |
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| CN104587946A true CN104587946A (en) | 2015-05-06 |
| CN104587946B CN104587946B (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510034777.4A Active CN104587946B (en) | 2015-01-24 | 2015-01-24 | A kind of regulation catalytic filling for reactive distillation column |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105561911A (en) * | 2015-12-16 | 2016-05-11 | 福州大学 | Catalyst bundled packet filler in efficient catalytic distillation column and preparation method thereof |
| CN107903150A (en) * | 2017-12-04 | 2018-04-13 | 福州大学 | A kind of method of continuous hydrolysis production sec-butyl alcohol |
| PL423010A1 (en) * | 2017-09-29 | 2019-04-08 | Losentech Spółka Z Ograniczoną Odpowiedzialnością | Column for the mass and heat exchange processes, preferably for reactive distillation |
| CN111116180A (en) * | 2020-02-12 | 2020-05-08 | 江西车田科技有限公司 | Integral net-shaped microporous ceramic corrugated packing and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824890A (en) * | 2012-09-18 | 2012-12-19 | 天津大学 | Catalytic distillation filler with alternative flow structure |
-
2015
- 2015-01-24 CN CN201510034777.4A patent/CN104587946B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824890A (en) * | 2012-09-18 | 2012-12-19 | 天津大学 | Catalytic distillation filler with alternative flow structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105561911A (en) * | 2015-12-16 | 2016-05-11 | 福州大学 | Catalyst bundled packet filler in efficient catalytic distillation column and preparation method thereof |
| PL423010A1 (en) * | 2017-09-29 | 2019-04-08 | Losentech Spółka Z Ograniczoną Odpowiedzialnością | Column for the mass and heat exchange processes, preferably for reactive distillation |
| CN107903150A (en) * | 2017-12-04 | 2018-04-13 | 福州大学 | A kind of method of continuous hydrolysis production sec-butyl alcohol |
| CN107903150B (en) * | 2017-12-04 | 2021-05-18 | 福州大学 | Method for producing sec-butyl alcohol by continuous hydrolysis |
| CN111116180A (en) * | 2020-02-12 | 2020-05-08 | 江西车田科技有限公司 | Integral net-shaped microporous ceramic corrugated packing and manufacturing method thereof |
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| Publication number | Publication date |
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| CN104587946B (en) | 2016-10-05 |
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