CN206454654U - The packed catalytic rectification packing of disc type assembling - Google Patents
The packed catalytic rectification packing of disc type assembling Download PDFInfo
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- CN206454654U CN206454654U CN201720096848.8U CN201720096848U CN206454654U CN 206454654 U CN206454654 U CN 206454654U CN 201720096848 U CN201720096848 U CN 201720096848U CN 206454654 U CN206454654 U CN 206454654U
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Abstract
The utility model is related to a kind of packed catalytic rectification packing of disc type assembling, and its structure includes component A and component B two kinds of components：Component A is the rectangle catalyst bag of suture, its interior catalyst filling particle；Component B is structured packing piece；Component B structured packing piece is parallel with component A catalyst bag closely to be stacked, and it is in disc type helical structure to crimp, and is then fixed with banding piece, forms catalytic rectification packing.The utility model catalyst overseam closes size adjustable, and Catalyst packing density is controllable, adjusts catalyst content, improves catalyst utilization.Component A and component B is alternately placed, and structured packing piece improves flow of fluid, it is ensured that gas-liquid two-phase is uniformly distributed, and reactant and product is constantly separated to tower top and bottom of towe, promotes mass transport process, improves reaction rate.Catalytic rectification packing structure is in disc type helical structure, and catalyst bag and structured packing piece are spaced, and improves gas-liquid two-phase radial distribution, while pressure drop can be reduced.
Description
Technical field
The utility model is a kind of packed catalytic rectification packing of disc type assembling, belongs to chemical industry catalytic rectification process model
Process optimization and reinforcing in farmland, more particularly to catalytic rectifying tower.
Background technology
Catalytic distillation process is the height coupling of catalytic reaction and distillation process, is that catalyst is introduced into rectifying column, solid
Catalyst both accelerated chemical reaction in catalytic rectification process as catalyst, and was used as filler or tower internals to provide mass transfer table
Face, so inner-tower filling material must be provided simultaneously with catalysis and two functions of gas-liquid mass transfer.Raw material is obtained in tower after catalytic reaction
Product can be continuously removed, and driving a reaction proceeds so that catalytic distillation process has higher production capacity.Catalysis
Fractional distillation filling-material structure is the key factor for directly affecting catalytic distillation process efficiency, therefore, and filler will not only ensure gas-liquid in tower
Two-phase is sufficiently mixed, and also requires to make the time of contact interval range of reactant and catalyst big and controllable.
In recent years, the research of catalytic rectification packing is concentrated mainly on raising loaded catalyst with patented invention, it is ensured that vapour
The admittedly good mass-transfer efficiency of liquid, liquid, and reduction tower three technical elements of internal drop.Chinese patent CN201510942019.2
In, University of Fuzhou, which develops Catalyst capsule filler in a kind of efficient catalytic rectifying tower, includes catalyst bag chain and regular ripple
Line packing sheet, the catalyst bag chain is in series by a plurality of catalyst bags with hollow structure, the catalyst bag
Built with solid catalyst particle, the catalyst bag chain is brought into close contact with regular corrugation filler piece spiral after fixed by lock ring piece
Shaping.This structure for it is traditional tie up pack arrangement and carried out hollow structure in effective improvement, but catalyst bag add
Filler difficulty of processing, reduces loaded catalyst, and tower internal drop need to be reduced further.Chinese patent
In CN201410049831.8, University Of Tianjin develops a kind of disc type spiral from catalytic distillation structure is distributed, and is set in structure
There are two kinds of spaced catalyst assemblies：Component A is packing sheet outer wrapping silk screen, interior catalyst filling, be shaped as cuboid,
Arch or polygon, it is desirable to be being circumferentially arranged for multiple component A formation cyclic structures；Component B is catalyst built in outsourcing silk screen
The rectangular body catalyst bag of particle, and curl is reversed, catalyst bag external demand places dividing plate with holes, and multiple component B are formed
Cyclic structure is circumferentially arranged.This component of structure two all contains catalyst granules, improves loaded catalyst, adds vapour-liquid biography
Matter area.But because flow resistance is larger, tower internal drop is higher.In Chinese patent CN201310689147.1, University Of Tianjin's exploitation
Two kinds of components are provided with a kind of catalytic rectification packing of circular arrangement, packing layer：Packing sheet is stacked together, outer bread
One layer of silk screen is wrapped up in, interior catalyst filling unites by a seam silk screen, is defined as component 1；Component 2 is structured packing piece；Component 1 with
Component 2 is stacked and crimped, and is then fixed with banding piece, forms catalytic rectification packing.This structure, can reduce tower internal drop, but urge
Agent loadings are less, and dwell time in the tower is shorter.
The content of the invention
It is difficult to solve catalytic rectification packing in existing reaction rectification technique while meeting course of reaction and separation process
It is required that, and the problem of processing technology complexity.The purpose of this utility model is to provide a kind of the packed of efficient disc type assembling
Catalytic rectification packing, simplify catalytic rectification packing processing and mounting process, and by change filler internal accelerator bag with it is regular
The combination of filler, improves fit of the filler for both course of reaction and separation process, packet mode is tied up instead of traditional
Catalytic rectification packing, fortifying catalytic distillation process improves radial distribution, improves in catalyst utilization, reduction catalytic rectifying tower
Pressure drop, so that fortifying catalytic distillation column reactor effect.
What the utility model was realized in：
A kind of packed catalytic rectification packing of disc type assembling, its structure includes component A and component B two kinds of components：Component A
It is the rectangle catalyst bag of suture, its interior catalyst filling particle；Component B is structured packing piece；The regular of component B is filled out
Tablet is parallel with component A catalyst bag closely to be stacked, and it is in disc type helical structure to crimp, and is then fixed with banding piece, is formed
Catalytic rectification packing.
Described component A is the catalyst bag sutured by spun silk cloth, nylon cloth, woven dacron or glass fabric；It is right
In corrosivity catalytic reaction process, corrosion-resistant material suture catalyst bag can be used.
Depending on described component A suture size can be according to catalyst particle size and particle packing situation, adjacent suture
Suture size between line can be 10-200mm.
Described component B can for window diversion packing sheet, wire mesh packing, screen waviness packings, acanthopore ripple condiment,
The structured packing piece of hole ripple corrugated filler tablet, protruded corrugated sheet packing or honeycomb packing sheet.
Described component A and component B quantity ratio are 1:1 to 1:100.
Structured packing piece stacks mode with catalyst bag in described component B includes following three kinds of situations：
1. component B is 1 regular packing sheet, parallel to be stacked under catalyst bag.
2. component B is multi-disc structured packing piece, it is placed in catalyst and wraps lower floor, up and down number of plies mean allocation.
3. component B is multi-disc structured packing piece, it is placed in catalyst and wraps lower floor, catalyst bag lower floor wraps layer compared with catalyst
It is more a piece of.
Described component A and component B is contour.
When conversion zone places multiple filling layers disk in tower, the rotatable 180 ° of settings of packing box up and down are put.
The advantage of the utility model patent has：
1. catalyst overseam closes size adjustable, and Catalyst packing density is controllable, adjusts catalyst content, controls reactant
Time of contact between catalyst, improve catalyst utilization.
2. component A and component B is alternately placed, structured packing piece improves flow of fluid, it is ensured that gas-liquid two-phase is uniformly distributed, and is made
Reactant and product are constantly separated to tower top and bottom of towe, promote mass transport process, improve reaction rate.
3. catalytic rectification packing structure is in disc type helical structure, catalyst bag and structured packing piece are spaced, and improve gas
Liquid two-phase radial distribution, while pressure drop can be reduced.
4. the piece number of structured packing in component B can be adjusted according to different process demand, so as to improve filler for reacting
The fit of journey and separation engineering, combined reaction time of contact and tower internal drop are multifactor, increase reaction flux, reduce tower internal pressure
Drop.
Brief description of the drawings
Fig. 1 is the top view that component B contains 2 packing sheets in the utility model catalytic rectification packing；
Fig. 2 is the profile that component B contains 2 packing sheets in the utility model catalytic rectification packing；
Fig. 3 is the profile that component B contains 5 packing sheets in the utility model catalytic rectification packing；
Wherein：1- catalyst bags, 2- structured packing pieces, 3- tower walls.
Embodiment
The utility model is illustrated with reference to Fig. 1 and Fig. 2：
The utility model is the packed catalytic rectification packing that a kind of disc type is assembled, regular using catalyst bag and catalytic distillation
The mode that filler is combined is assembled, and catalyst bag is parallel with structured packing closely to be stacked, and wherein structured packing quantity can be according to reality
Border experiment demand determines that experimentation requires higher for tower internal drop and gas-liquid mass transfer, need to increase structured packing quantity, effectively
To improve common packet mode catalytic rectification packing radial distribution of tying up uneven, and tower internal drop it is big the problem of, window diversion is filled out
Material improves gas-liquid circulation passage, so as to increase gas-liquid two-phase contact area, strengthens the mass-transfer efficiency of the catalytic rectification packing；When right
When catalytic reaction process requires higher, structured packing piece quantity can be suitably reduced, increases catalyst bag packed density.
Fig. 1 is the top view of the utility model filler, by component A it is parallel with component B it is close stack after, curling is in disc type spiral shell
Structure filling is revolved in rectifying column, with banding piece by packing box banding and fixation.It is placed in conversion zone in tower；Packing box in conversion zone
Quantity can be according to requirement of experiment, and the combined factors such as reaction time are determined, rotatable 180 ° of installations between multiple filling layers disk.On
Lower packing box can use the catalyst bag and structured packing combination of varying number.
In catalytic rectifying tower, liquid phase flows downward from component A and component B, and liquid is diametrically in two component internals
Flow repeatedly, liquid phase carries out mass transport process in component A.Liquid phase alternately flows in two kinds of components, promotes the progress of reaction
With the separation of thing system.Gas phase rises from packing box, and mass transfer is carried out with liquid phase in component A, is finally reached tower top, and harvest is light
Phase, bottom of towe harvest heavy phase.
It is further described below in conjunction with specific embodiment：
Embodiment 1：
With spirit of vinegar during synthesis methyl acetate in the presence of NKC-9, the selection resistant material sewing of catalyst bag
Form, catalyst particle size is that the suture size between 1mm, the adjacent stitchings of catalyst bag is 20mm.This catalytic distillation process
Speed is controlled by surface reaction rate, and the quantity ratio of catalyst bag and structured packing piece is 1:1, component B in catalytic rectification packing
Using window diversion filler, packing sheet is parallel to be stacked under catalyst bag, and cans.Tower diameter DN1000, up and down filler
Without rotation when disk is installed.Conversion zone sets 8 disk fillers.Using the utility model catalytic rectification packing commonly packet mode is tied up with using
Catalytic rectification packing is compared, and radial distribution is uniform, tower internal drop reduction by 12.8%, and reaction conversion ratio is up to more than 99.8%, vinegar
The purity of sour methyl esters improves 16%.
Embodiment 2：
In the anti-disproportionated reaction rectifier unit of chlorosilane, catalyst bag is formed from nylon cloth sewing, and catalyst choice is anti-
Suture size between disproportionation catalyst SA66, the adjacent stitchings of catalyst bag is 50mm.This catalytic distillation process is for anti-
Process and the degree of coupling of distillation process is answered to require higher, to improve the number of often disk filler liquid holdup, catalyst bag and structured packing
Amount is than selection 1：2, the component B in catalytic rectification packing use window diversion filler, packing sheet in catalyst wrap down two layers it is flat
Distribute, it is parallel with catalyst bag to stack and cans, as shown in figure 1 and 2.Tower diameter DN1200, up and down packing box installation
Shi Wuxu rotates, and conversion zone sets 10 disk fillers, using the utility model catalytic rectification packing, the anti-disproportionated reaction rectifying of chlorosilane
Journey successful commercialization is run, and with being contrasted using common packet mode catalytic rectification packing of tying up, stable operation, STC circulating temperatures are steady
30 DEG C are scheduled on, and DCS conversion ratios are more than 98.7%, reach the production effect of efficient energy-saving.
Embodiment 3：
In production MTBE (methyl tertiary butyl ether(MTBE)) device, the selection nylon cloth sewing of catalyst bag is formed, catalyst particle size
For 0.5mm, the suture size between the adjacent stitchings of catalyst bag is 15mm.This catalytic distillation process is reaction rate and gas
The alternate mass transfer rate of liquid two shares the quantity ratio selection 1 of control, catalyst bag and structured packing：5, the group in catalytic rectification packing
Part B uses window diversion filler, and how a piece of packing sheet is in the lower layer number upper layer quantity of catalysis bag, parallel with catalyst bag to stack
And cans, as shown in Figure 3.Tower diameter DN800, is rotated by 90 ° when packing box is installed up and down.Conversion zone sets 10 disk fillers, its
In in order that gas-liquid two-phase is evenly distributed in tower, the high common code fillers of 25cm are set between the 5th disk and the 6th disk filler.
Using the utility model catalytic rectification packing with being contrasted using common packet mode catalytic rectification packing of tying up, tower internal drop reduction
24.6%, methanol content reduces by 12.3%, C4Mixture reduces 17.9%, and butadiene volume fraction reduces by 11.7%, dimethyl ether
Volume fraction reduces 9.5%-16.7%, and other impurity reduce 5%-20%, and MTBE contents improve 1.82 percentage points.
Embodiment 4：
Synthesis ETBE (ethyl tert-butyl ether (ETBE)) catalytic filler tower in, catalyst bag selection glass fabric sewing and
Into catalyst is that the suture size between small particle size zeolite molecular sieve, the adjacent stitchings of catalyst bag is 50mm.This catalysis essence
It is the quantity ratio selection 1 that mass transfer rate shares control, catalyst bag and structured packing between reaction rate and gas-liquid two-phase to evaporate process：
4 and 1：Component B in 10 two kinds of situations, catalytic rectification packing uses window diversion filler, and packing sheet is wrapped down two layers in catalysis
Mean allocation, it is parallel with catalyst bag to stack and cans.6 disk fillers are set in tower diameter DN600, conversion zone, to improve reaction
Rectifying section top and bottom part gas-liquid two-phase is more uniform, catalyst bag and the quantity of structured packing in the 1st and the 6th disk filler
Than for 1：The quantity ratio of catalyst bag and structured packing piece is 1 in 10, the 2nd to the 5th disk filler：4, in the 3rd disk and the 4th disk filler
Between place the high metallurgic orifice corrugated packings of 40cm so that gas-liquid distribution is more uniform in conversion zone.When being installed above and below packing box
It is rotated by 90 °.Using catalytic rectification packing of the present utility model with being contrasted using common packet mode catalytic rectification packing of tying up, catalyst
Usage amount reduction by 12.8%, the conversion ratio of isobutene is improved to 86.3%, overall presure drop reduction by 15.6% in tower.
Example 5：
In the catalytic filler tower of C 4 fraction catalytic hydrogenation process, the selection nylon cloth sewing of catalyst bag is formed, to reduce
Suture size between Catalyst packing heap density, the adjacent stitchings of catalyst bag is 100mm.It is right during this catalytic distillation
Require more strict in catalytic rectifying tower internal drop, and mass transfer rate is slower between gas-liquid two-phase, is reasonable reduction tower internal drop, carries
The quantity of high overall efficiency, catalyst bag and structured packing is than selection 1：20, the component B in catalytic rectification packing is led using windowing
Filler is flowed, packing sheet wraps down two layers of mean allocation in catalysis, it is parallel with catalyst bag to stack and cans.Tower diameter DN800,
10 disk fillers are set in conversion zone, 180 ° are rotated when packing box is installed up and down, 40cm are placed between the 3rd disk and the 4th disk filler high
Metallurgic orifice corrugated packing, so that gas-liquid distribution is more uniform in conversion zone.Using catalytic rectification packing of the present utility model with
Contrasted using common packet mode catalytic rectification packing of tying up, by improving tower internal drop, prevent local temperature too high, influence reaction speed
Rate and catalyst life, make catalyst usage amount reduce by 12.8%, reaction conversion ratio is improved to 94.3%, overall presure drop reduction in tower
15.6%.
Example 6：
In synthesizing glycol n-butyl ether device, the selection spun silk cloth sewing of catalyst bag is formed, and catalyst is from borontrifluoride
Suture size between diethyl etherate, the adjacent stitchings of catalyst bag is 200mm.Gas-liquid two during this catalytic distillation
Interphase mass transfer speed is slower, for matching catalyst bag size, improves the number of reactive distillation section efficiency, catalyst bag and structured packing
Amount is than selection 1：100, the component B in catalytic rectification packing use window diversion filler, packing sheet in catalysis wrap down two layers it is flat
Distribute, it is parallel with catalyst bag to stack and cans.Tower diameter DN1200, conversion zone sets 15 disk packing layers, up and down packing box
Without rotation during installation.Using the utility model catalytic rectification packing with being contrasted using common packet mode catalytic rectification packing of tying up,
Material radial distribution is uniform, and oxirane is improved to 98.2% in the conversion ratio of conversion zone, and glycol monoethyl ether is selective and receives
Rate improves 11.4%~23.7%.
Claims (10)
1. a kind of packed catalytic rectification packing of disc type assembling, it is characterized in that two including component A and component B kinds of components：Component A
It is the rectangle catalyst bag of suture, its interior catalyst filling particle；Component B is structured packing piece；The regular of component B is filled out
Tablet is parallel with component A catalyst bag closely to be stacked, and it is in disc type helical structure to crimp, and is then fixed with banding piece, is formed
Catalytic rectification packing.
2. catalytic rectification packing as claimed in claim 1；It is characterized in that described component A is by spun silk cloth, nylon cloth, terylene
Cloth or the catalyst bag of glass fabric suture.
3. catalytic rectification packing as claimed in claim 1；It is characterized in that the suture chi between described component A adjacent stitchings
Very little is 10-200mm.
4. catalytic rectification packing as claimed in claim 1；It is characterized in that described component B is window diversion packing sheet, metal
Wire packing, screen waviness packings, acanthopore ripple condiment, hole ripple corrugated filler tablet, protruded corrugated sheet packing or honeycomb filler
The structured packing piece of piece.
5. catalytic rectification packing as claimed in claim 1；It is characterized in that described component A and component B quantity ratio are 1:1 to
1:100。
6. catalytic rectification packing as claimed in claim 1；It is characterized in that component B is 1 regular packing sheet, parallel be stacked in is urged
Under agent bag.
7. catalytic rectification packing as claimed in claim 1；It is characterized in that component B is multi-disc structured packing piece, catalyst is placed in
Lower floor is wrapped, up and down number of plies mean allocation.
8. catalytic rectification packing as claimed in claim 1；It is characterized in that component B is multi-disc structured packing piece, catalyst is placed in
Lower floor is wrapped, it is how a piece of that catalyst bag lower floor wraps layer than catalyst.
9. catalytic rectification packing as claimed in claim 1；It is characterized in that described component A and component B is contour.
10. catalytic rectification packing as claimed in claim 1；It is characterized in that when conversion zone places multiple filling layers disk in tower, up and down
The 180 ° of settings of filler disc spins are put.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720096848.8U CN206454654U (en) | 2017-01-25 | 2017-01-25 | The packed catalytic rectification packing of disc type assembling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051368A (en) * | 2017-01-25 | 2017-08-18 | 天津大学 | The packed catalytic rectification packing of disc type assembling |
| CN109745925A (en) * | 2019-02-26 | 2019-05-14 | 国家能源投资集团有限责任公司 | The loading method of n-butene direct hydration reactor |
-
2017
- 2017-01-25 CN CN201720096848.8U patent/CN206454654U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051368A (en) * | 2017-01-25 | 2017-08-18 | 天津大学 | The packed catalytic rectification packing of disc type assembling |
| CN109745925A (en) * | 2019-02-26 | 2019-05-14 | 国家能源投资集团有限责任公司 | The loading method of n-butene direct hydration reactor |
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| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 300350 District, Jinnan District, Tianjin Haihe Education Park, 135 beautiful road, Beiyang campus of Tianjin University Co-patentee after: DANDONG MINGZHU SPECIAL TYPE RESIN CO., LTD. Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Co-patentee before: DANDONG MINGZHU SPECIAL TYPE RESIN CO., LTD. Patentee before: Tianjin University |
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