CN203695061U - Circularly distributed catalytic distillation packing - Google Patents
Circularly distributed catalytic distillation packing Download PDFInfo
- Publication number
- CN203695061U CN203695061U CN201320825337.7U CN201320825337U CN203695061U CN 203695061 U CN203695061 U CN 203695061U CN 201320825337 U CN201320825337 U CN 201320825337U CN 203695061 U CN203695061 U CN 203695061U
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- Prior art keywords
- packing
- assembly
- sheet
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- Expired - Fee Related
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- 238000012856 packing Methods 0.000 title claims abstract description 122
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 35
- 238000004821 distillation Methods 0.000 title abstract description 10
- 239000003054 catalyst Substances 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 9
- 238000011068 loading method Methods 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000376 reactant Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract 2
- 239000007791 liquid phase Substances 0.000 description 7
- NUMQCACRALPSHD-UHFFFAOYSA-N tert-butyl ethyl ether Chemical compound CCOC(C)(C)C NUMQCACRALPSHD-UHFFFAOYSA-N 0.000 description 6
- 239000012071 phase Substances 0.000 description 5
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000066 reactive distillation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model relates to circularly distributed catalytic distillation packing. Two components are arranged inside a packing layer, wherein a component 1 is characterized in that packing pieces are stacked up, wrapped with a layer of screen net, and filled with a catalyst, and the screw net is sewn; the packing pieces include windowing guide packing, plate corrugated packing, porous plate corrugated packing, metal screen net packing and screen net corrugated packing; a component 2 comprises regular packing pieces including windowing guide packing pieces, metal screen net packing pieces, screen net corrugated packing pieces, puncturing corrugated packing pieces, porous plate corrugated packing pieces or honeycomb packing pieces and the like; the component 1 and the component 2 are overlapped and coiled, and are subsequently fixed by clamping pieces so as to form the catalytic distillation packing. The packing pieces are circularly distributed, the contact time between a reactant and the catalyst can be controlled by adjusting the amount of the catalyst, so that the reaction effect is improved, and meanwhile the pressure drop inside a tower is reduced. The component 1 and the component 2 are alternatively arranged, the reactant and a product are continuously separated to the tower top and the tower bottom, and the reaction is positively executed.
Description
Technical field
The utility model belongs to chemical industry catalytic rectification process category, particularly process optimization and the strengthening in catalytic rectifying tower tower; Relate to a kind of catalytic rectification packing of circular arrangement.
Background technology
Catalytic distillation process had both comprised course of reaction, comprised again separation process, so inner-tower filling material must possess catalysis and two functions of gas-liquid mass transfer simultaneously.Raw material is separated at the product after catalytic reaction in tower, and driving a reaction is proceeded.The filling-material structure of catalytic rectifying tower is one of key factor of influence process efficiency, and filler should guarantee that in tower, liquid phase fully mixes contact, makes again interval range time of contact of reactant and catalyst large and adjustable.
The current industrial short grained resin catalyst that generally uses, with augmenting response surface area.But when catalyst grain size hour, being directly placed on can significantly increase tower internal drop in tower and even can cause packing layer to stop up.Due to technical limitations, resin catalyst belongs to spherical or elliposoidal mostly, is difficult for making other shapes.Therefore, how to reduce tower internal drop, promote mass-transfer progress in tower and make the problems such as time of staying of filler is controlled become the important directions of research high-efficient packing for catalytic rectification.
For fortifying catalytic distillation process, Chinese and overseas scholars has researched and developed many catalytic distillation devices.Chinese patent 03149505.2, the catalytic distillation device of Sinopec Beijing Research Institute of Chemical Industry's exploitation, in the catalyst bag that Catalyst packing is made in silk screen, and is placed in catalyst bag between packing sheet, and the filler pressure drop of this structure is larger.Publication number is the Chinese patent application of 102423680A, it is a kind of catalyst random packing of Northwest University's exploitation, it is made up of tubular filler shell and the catalyst bag being placed in this filler shell, because filler has loose heap character, can overcome regular gas short circuit phenomenon of tying up bag catalyst filling, but its mass-transfer performance is not good enough.In US3634534, Chevron Research Company at plate column downspout place, controls Catalyst packing the average contact time of reactant and catalyst, but is not suitable in packed tower with the loadings of catalyst.
Summary of the invention
The purpose of this utility model is to provide a kind of catalytic rectification packing efficiently, fortifying catalytic distillation process, and the reaction effect of reinforcement catalytic rectifying tower, reduces the pressure drop in catalytic rectifying tower.
The utility model is achieved in that
A kind of catalytic rectification packing with circular arrangement, in packing layer, be provided with two kinds of assemblies: packing sheet is stacked together, coated outside one deck silk screen, interior catalyst filling, silk screen is united by a seam, be defined as assembly 1, packing sheet is window diversion filler, mellapak packing, perforated plate corrugated filler, wire mesh packing, screen waviness packings; Structured packing sheet is defined as assembly 2; Assembly 2 is the structured packing sheet of window diversion packing sheet, wire mesh packing, screen waviness packings, acanthopore ripple packing, perforated plate corrugated filler sheet, protruded corrugated sheet packing sheet or honeycomb packing sheet; Assembly 1 stacks with assembly 2 and is curling, then fixes with banding sheet, forms catalytic rectification packing.
Assembly 1 has following several mode with the assembling mode of assembly 2:
1. assembly 1 and assembly 2 exist simultaneously, do not establish packing sheet, a loading catalyst in the packing box of catalytic rectification packing in assembly 1.
2. in catalytic rectification packing, do not contain assembly 2.
3, assembly 1 and assembly 2 exist simultaneously.
When the interior conversion zone placement of multiple layers packing box of tower, 0 ° to 180 ° installation of upper and lower packing box rotation.
If for gas-liquid two-phase in tower is more uniformly distributed, between two dish catalytic rectification packing dishes, can place the common structured packing of 0～2m height and carry out distributing again of gas-liquid two-phase.
When filler filling, levels mounting means can be identical, also can be different.
The advantage of the utility model patent has:
1. packing sheet is rounded arranges, and can control the time of contact of reactant and catalyst by the amount of adjusting catalyst, intensified response effect; Meanwhile, can reduce tower internal drop.
2. assembly 1 is alternately placed with assembly 2, and at the bottom of making reactant and product constantly be separated to tower top and tower, driving a reaction carries out to forward.
3. the sheet number of assembly 2 is adjustable, thereby can adjust the loadings of catalyst in assembly 1, optimizes Liquid Flow and mass transport process in tower.
Accompanying drawing explanation
Fig. 1 is the top view of the utility model filler;
Fig. 2 is the schematic diagram of not establishing packing sheet in the utility model filler in assembly 1;
Fig. 3 is the schematic diagram of not establishing packing sheet in the utility model filler in assembly 2;
Wherein 1 ?the packing sheet of catalyst is housed, 2 ?packing sheet, 3 ?tower wall.
The specific embodiment
High-efficient packing for catalytic rectification, employing is tied up the structured packing of bag catalytic distillation and is assembled with the mode that the structured packing of modularization catalytic distillation combines, packing sheet outsourcing silk screen, inner catalyst filling, silk screen can prevent that catalyst from exposing, and also can play good liquid wetting action.
In conjunction with key diagram 1, the utility model is described:
Fig. 1 is the top view of the utility model filler, and assembly 1, assembly 2 are filled in respectively in packed tower, with banding sheet, each packing sheet banding is also fixing.Liquid phase is from the filler of assembly 1 and assembly 2 to dirty, liquid phase is moving at the filler inner counter resurgent of assembly 1, Partial Liquid Phase sees through the structured packing that the good silk screen of wettability enters assembly 2, and in the structured packing of while assembly 2, Partial Liquid Phase also enters the window diversion filler of assembly 1 through silk screen.Liquid phase alternately flows in two kinds of assemblies, has promoted the carrying out of reaction and separating of system.Gas phase rises in assembly 2, and with mass transfer in liquid phase, final tower top is gathered in the crops light phase, results heavy phase at the bottom of tower.
Further illustrate below in conjunction with specific embodiment:
Embodiment 1:
In methyl acetate hydrolysis process, filler adopts window diversion filler and corrugated plate packing, and in one deck packing box, assembly 1 includes 2 of packing sheets, assembly 2 includes 4 of packing sheets, then by the packing sheet cans being superimposed together, tower diameter DN600, when upper and lower packing box is installed without rotation.Conversion zone is established 6 dish fillers, and establishes the common structured packing that 25cm is high between the 3rd dish and the 4th dish filler, so that gas-liquid distributes more even in conversion zone.Use the utility model catalytic rectification packing and use common bale packing type catalyst contrast, methyl acetate hydrolysis rate improve 8.5% ?14.3%, product yield improves approximately 12%.
Embodiment 2:
Producing MTBE(methyl tertiary butyl ether(MTBE)) in device, filler adopts window diversion filler and metallurgic orifice corrugated packing.Filler is totally 14 dishes, and in the 4 dish fillers on tower top, in assembly 1, not containing a packing sheet catalyst filling, assembly 2 includes 6 of packing sheets, then by the packing sheet cans being superimposed together; In 10 dish fillers of tower bottom, assembly 1 includes 2 of packing sheets, and assembly 2 includes 2 of packing sheets, then the silk screen of the packing sheet cans assembly 1 being superimposed together is adopted to stainless steel, tower diameter DN700,120 ° of upper and lower filler rotations.Because tower inner fluid distribution situation is good, in conversion zone, no longer establish common structured packing.Use the utility model catalytic rectification packing and use common bale packing type catalyst contrast, methanol content reduces by 12.5%, C
4mixture reduces by 19.5%, C
5mixture reduce 28.4%, other impurity reduce 10.3% ?50%, MTBE content improve 1.72 percentage points.
Embodiment 3:
In FCC gasoline selective hydrodesulfurizationmodification reaction and rectification device, alkadienes selective hydrogenation generates monoolefine.In the conversion zone of reactive distillation column, in one deck packing box, assembly 1 includes 3 of packing sheets, in assembly 2, not containing packing sheet, in this packing box, only contains assembly 1, cans, tower diameter DN650, upper and lower filler Rotate 180 °.In conversion zone, establish 12 dish fillers, between the 9th dish and the tenth dish filler, place the common structured packing that 2m is high, so that gas-liquid distributes more even in conversion zone.Use the utility model catalytic rectification packing and use common bale packing type catalyst contrast, experiment shows, catalyst use amount reduction by 14%, and in tower, overall presure drop reduces by 24.5%, and desulfurization degree increases by 10.6%, and catalyst life increases by 16%, loss of octane number minimizing 13～20%.
Embodiment 4:
In the catalytic rectifying tower of synthetic ethyl tert-butyl ether (ETBE) (ETBE), tower diameter DN800, establishes 8 dish fillers in conversion zone, and in the 1st to the 5th dish filler, assembly 1 includes 2 of packing sheets, and assembly 2 includes 2 of packing sheets, Rotate 180 ° when upper and lower packing box is installed.Between the 5th dish and the 6th dish filler, place the window diversion filler that 40cm is high, so that gas-liquid distributes more even in conversion zone.In the 6th to the 8th dish filler, assembly 1 includes 2 of packing sheets, and assembly 2 includes 4 of packing sheets, and upper and lower packing box rotates 120 ° while installation.Use the utility model catalytic rectification packing and use common bale packing type catalyst contrast, experiment shows, catalyst use amount reduces by 16.5%, and reflux ratio can drop to 4.7 by 5, and the conversion ratio of isobutene is increased to 87%., in tower, overall presure drop reduces by 14%.
Claims (5)
1. one kind has the catalytic rectification packing of circular arrangement, it is characterized in that being provided with in packing layer two kinds of assemblies: packing sheet is stacked together, coated outside one deck silk screen, interior catalyst filling, silk screen is united by a seam, be defined as assembly 1, packing sheet is window diversion filler, mellapak packing, perforated plate corrugated filler, wire mesh packing, screen waviness packings; Structured packing sheet is defined as assembly 2; Assembly 2 is the structured packing sheet of window diversion packing sheet, wire mesh packing, screen waviness packings, acanthopore ripple packing, perforated plate corrugated filler sheet, protruded corrugated sheet packing sheet or honeycomb packing sheet; Assembly 1 stacks with assembly 2 and is curling, then fixes with banding sheet, forms catalytic rectification packing.
2. filler as claimed in claim 1, is characterized in that in assembly 1, not establishing packing sheet, a loading catalyst in the packing box of catalytic rectification packing.
3. filler as claimed in claim 1, is characterized in that not containing in catalytic rectification packing assembly 2.
4. filler as claimed in claim 1, while it is characterized in that the interior conversion zone placement of multiple layers packing box of tower, 0 ° to 180 ° installation of upper and lower packing box rotation.
5. filler as claimed in claim 4, is characterized in that placing 0～2m common structured packing highly between two dish catalytic rectification packing dishes and carries out distributing again of gas-liquid two-phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825337.7U CN203695061U (en) | 2013-12-13 | 2013-12-13 | Circularly distributed catalytic distillation packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825337.7U CN203695061U (en) | 2013-12-13 | 2013-12-13 | Circularly distributed catalytic distillation packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203695061U true CN203695061U (en) | 2014-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320825337.7U Expired - Fee Related CN203695061U (en) | 2013-12-13 | 2013-12-13 | Circularly distributed catalytic distillation packing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203695061U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691387A (en) * | 2013-12-13 | 2014-04-02 | 中建安装工程有限公司 | Circularly-arranged catalytic distillation packing |
| CN104909371A (en) * | 2015-07-14 | 2015-09-16 | 黄国强 | Device and method of purifying silane by complexation and rectification |
| RU2641920C1 (en) * | 2016-11-07 | 2018-01-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева (РХТУ им. Д.И. Менделеева) | Dump packing for mass exchange strings |
| RU2642572C1 (en) * | 2016-11-07 | 2018-01-25 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева (РХТУ им. Д.И. Менделеева) | Dump packing for mass exchange strings |
-
2013
- 2013-12-13 CN CN201320825337.7U patent/CN203695061U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691387A (en) * | 2013-12-13 | 2014-04-02 | 中建安装工程有限公司 | Circularly-arranged catalytic distillation packing |
| CN104909371A (en) * | 2015-07-14 | 2015-09-16 | 黄国强 | Device and method of purifying silane by complexation and rectification |
| RU2641920C1 (en) * | 2016-11-07 | 2018-01-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева (РХТУ им. Д.И. Менделеева) | Dump packing for mass exchange strings |
| RU2642572C1 (en) * | 2016-11-07 | 2018-01-25 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева (РХТУ им. Д.И. Менделеева) | Dump packing for mass exchange strings |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 210046 Wen Lan Road, Qixia District, Nanjing, Jiangsu Province, No. 6 Co-patentee after: Tianjin University Patentee after: CHINA CONSTRUCTION INDUSTRIAL & ENERGY ENGINEERING GROUP Co.,Ltd. Address before: 210046 Yaohua Menyao'an New Village, Qixia District, Nanjing City, Jiangsu Province Co-patentee before: Tianjin University Patentee before: China Construction Installation Engineering Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |