CN203886555U - Catalytic distillation packing with radial distribution capability - Google Patents
Catalytic distillation packing with radial distribution capability Download PDFInfo
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- CN203886555U CN203886555U CN201420051182.0U CN201420051182U CN203886555U CN 203886555 U CN203886555 U CN 203886555U CN 201420051182 U CN201420051182 U CN 201420051182U CN 203886555 U CN203886555 U CN 203886555U
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Abstract
The utility model relates to a catalytic distillation packing with a radial distribution capability. The internal part of a structure A consists of packing sheets, wherein a catalyst is filled into the packing; the external part is wrapped by a silk net; a structure B is a structured packing sheet and can be structured packings such as a windowing flow packing, a mellapak packing, a wire mesh corrugated packing, an orifice corrugated packing, a rolled orifice corrugated packing and a cellular packing; the two structures are alternately distributed inside a packing tray in the circumferential direction. The structure A and the structure B are distributed in a staggered manner in the circumferential direction, thus a gas-liquid multiphase flow channel is added, the mass transfer process of gas-liquid multiphase flow is promoted, the phenomena of channeling and short circuit of the gas-liquid multiphase flow are effectively avoided, a small pressure drop of a bed is achieved, the radial diffusion effect of the multiphase flow is effectively enhanced, the reaction product is timely separated, and forward reaction is promoted, consequently, the dosage of a catalyst can be reduced.
Description
Technical field
The utility model is a kind of structured packing for multiphase flow separation or multiphase flow reaction, and this filler can be widely used in catalytic distillation equipment, (as reactor, rectifying column, extractive reaction etc.); And can effectively improve fluid radial distribution effect, improve reaction and separative efficiency.
Background technology
At catalytic distillation device interior, react and separation process simultaneously.Reactant is after the reaction zone that catalyst is housed reacts, and product obtains separation in time in Disengagement zone, promotes reaction to proceed, thereby realized, reacts and separated coupling.Filler has played important function in catalytic distillation process, and its structure directly affects the efficiency of reactive separation process.Therefore arranging of filler not only will guarantee that in tower, vapour-liquid two-phase fully contacts, and also will make product be uniformly distributed at separated region, thereby guarantees that catalytic rectifying tower can move under optimized state.
Lot of domestic and international scholar is optimized design to catalytic distillation equipment at present.US Patent No. P4443599 wherein, USP424530 has proposed the first bagging of catalyst, then is rolled into the filler inner member that harness forms catalytic rectifying tower together with silk screen elastomer.But because the transmission of material will be passed through bagging, its mass transfer diffusion process resistance is large, causes radial distribution ability, and general reaction efficiency is not high.European patent 0448884 evenly mixes the filler inner member as catalytic rectifying tower with catalyst after proposing that silk screen bale packing is used to by the inert particle of cavity in center, but this class A of geometric unitA causes channel and the short circuit phenomenon of gas-liquid two-phase.Channel and short circuit phenomenon have increased resistance to mass tranfer, have reduced the radial distribution ability of filler, thereby affect the efficiency of reactive distillation.For addressing the above problem, this laboratory proposes to adopt the mode of filler subregion.
Summary of the invention
The utility model is a kind of for multiphase flow reaction (liquid-liquid diphasic flow separated with multiphase flow, stream-liquid two-phase flow, vapour-liquid liquid three-phase fluid, vapour-liquid liquid multiphase flow) structured packing, because the packing sheet of this filler is the radial distribution adopting, liquid flows from top to bottom, enter respectively in structure A and structure B, and liquid flow in structure A is in structure B, the liquid in structure B can flow to again in structure A, and mutually flowing between liquid improved the radial distribution ability of filler.Therefore, this filler has the radially-arranged ability of raising, the feature that separative efficiency is high, applied widely.
This utility model consists of several structures A and structure B.Structure A inside consists of packing sheet, and Catalyst packing is in filler, and outside is wrapped up by silk screen.Structure B is structured packing sheet, can be the structured packings such as window diversion filler, mellapak packing, screen waviness packings, perforated plate corrugated filler, protruded corrugated sheet packing, honeycomb filler.Two kinds of structures are alternately circumferentially distributed in packing box.
The technical solution of the utility model is as follows:
A kind of catalytic rectification packing with radial distribution ability; It is characterized in that being formed by structure A and structure B; Structure A inside consists of packing sheet, and Catalyst packing is in filler, and outside is wrapped up by silk screen; Structure B is structured packing sheet; Two kinds of structures are alternately circumferentially distributed in packing box.
Described structured packing sheet is the structured packing of window diversion filler, mellapak packing, screen waviness packings, perforated plate corrugated filler, protruded corrugated sheet packing or honeycomb filler.
Described catalytic rectification packing can be divided into 2n even number filler region, and n is positive integer; Structure A district and structure B district respectively account for half, in the mode of circumferential alternative arrangement, are booked whole packing box.
Structured packing sheet in described structure A and the structured packing sheet in structure B can identical filler types, also can adopt different filler types.
Described catalytic rectification packing comprises 2-100 piece packing sheet.
When tower diameter is in 100-400mm, dish is high is 40-100mm variation; When tower diameter is in 400-1000mm, dish is high is 100-150mm variation; When tower diameter is in 1000-3000mm, dish is high is 150-200mm variation; When tower diameter is greater than 3000mm, dish is high is 200-250mm variation.
The upper and lower two dish even number region quantities that filler divided can be identical, also can be different; When upper dish filler is divided into 2n region, lower wall filler rotation (180/n) °.
The material of described packing sheet is metal, plastics, pottery or graphite.
This filler is comprised of a plurality of structure A and a plurality of structure B.Whole dish filler can be divided into the even number regions such as 2,4,6,8,10,2n (n is positive integer).Wherein, the staggered circumferential array of structure A and structure B two parts.
Structure A is comprised of structured packing sheet 1 and silk screen 2, and wherein structured packing sheet can be the structured packings such as window diversion filler, mellapak packing, screen waviness packings, perforated plate corrugated filler, protruded corrugated sheet packing, honeycomb filler; Silk screen material can be metal, nonmetal, synthetic material etc.
Structure B is comprised of structured packing sheet 1, can be the structured packings such as window diversion filler, mellapak packing, screen waviness packings, perforated plate corrugated filler, protruded corrugated sheet packing, honeycomb filler.
Structured packing sheet in structure A and the structured packing sheet in structure B can identical filler types, also can adopt different filler types.
Every dish filler comprises 2-100 piece packing sheet.When tower diameter is in 100-400mm, dish is high is 40-100mm variation; When tower diameter is in 400-1000mm, dish is high is 100-150mm variation.When tower diameter is in 1000-3000mm, dish is high is 150-200mm variation.When tower diameter is greater than 3000mm, dish is high is 200-250mm variation.
The upper and lower two dish even number region quantities that filler divided can be identical, can be different.During installation, when upper dish filler is divided into 2n region, lower wall filler rotation (180/n) °.
The material of packing sheet can be metal, plastics, pottery, graphite etc.
Structure A and structure B two parts circumferential array of interlocking, increased the heterogeneous flow channel of vapour-liquid, promoted the mass transport process of vapour-liquid multiphase flow, channel and the short circuit phenomenon of vapour-liquid multiphase flow have effectively been avoided, realized bed pressure drop little, effectively strengthened multiphase flow radial diffusion effect, product obtains timely separation, promote reaction forward to carry out, thereby can reduce the consumption of catalyst.
Accompanying drawing explanation
Fig. 1: structured packing front view;
Fig. 2: during n=1, structured packing top view;
Fig. 3: during n=2, structured packing top view;
Fig. 4: during n=4, structured packing top view;
Fig. 5: during n=6, structured packing top view;
Fig. 6: flow direction figure; Liquid flows from top to bottom, enter respectively in structure A and structure B, and liquid flow in structure A is in structure B, and the liquid in structure B can flow to again in structure A, between liquid, mutually flows.
Fig. 7: gas flow figure; Gas from bottom to top, enters in structure B, carries out mass transfer with liquid.
Assembly 1-structured packing sheet, 2-silk screen,
The specific embodiment
Catalytic rectification packing outsourcing silk screen, apparatus with catalyst inside, silk screen can prevent that catalyst from exposing, and also can play good liquid wetting action.
In conjunction with Fig. 1-Fig. 5, the utility model is illustrated:
Fig. 2-Fig. 5 is the top view of the utility model filler, by structure A, structure B is filled in respectively in packing box, with banding sheet, each packing sheet banding is also fixing, wherein two kinds of packing sheets can be identical also can be different, can be the structured packings such as window diversion filler, mellapak packing, screen waviness packings, perforated plate corrugated filler, protruded corrugated sheet packing, honeycomb filler.Structured packing top view when Fig. 2 is n=1; Structured packing top view when Fig. 3 is n=2; Structured packing top view when Fig. 4 is n=4; Structured packing top view when Fig. 5 is n=6; During installation, when upper dish filler is divided into 2n region, lower wall filler rotation (180/n) °.
Embodiment 1:
In C4 catalytic distillation pretreatment unit, in the C 4 fraction from MTBE device, there are the alkadienes of high level and dimethyl ether etc., can not, directly as the raw material of alkylated reaction, need to carry out pretreatment.Employing catalytic rectification process completes hydrofinishing in catalytic rectifying tower simultaneously and dimethyl ether removes.Filler adopts window diversion filler and rolling metal perforated plate corrugated filler, every layer of structured packing that adopts n=1, and wherein structure A and structure B consist of 24 packing sheets respectively, totally 48 packing sheets.In the packing sheet of Catalyst packing in structure A.Tower diameter DN900, coils high 120mm, upper and lower two dish filler Rotate 180 ° installations.The utility model catalytic rectification packing contrasts with using common bale packing type catalyst, and experiment shows, overall presure drop reduction by 42% in tower.In C4 product after hydrofinishing, the volume fraction of dimethyl ether is lower than 9.7 μ L/L.
Embodiment 2:
In benzene chlorination gas-liquid-solid three-phase catalytic distillation equipment, chlorine reacts with benzene and generates Benzene Chloride.Filler adopts window diversion filler and rolling metal perforated plate corrugated filler, every layer of structured packing that adopts n=2, and wherein structure A and structure B consist of 15 packing sheets respectively, totally 60 packing sheets.In the packing sheet of Catalyst packing in structure A.Tower diameter DN1000, coils high 140mm, and upper and lower two dish filler half-twists are installed.The utility model catalytic rectification packing contrasts with using common bale packing type catalyst, and experiment shows, overall presure drop reduction by 35% in tower, and the chlorobenzene content in final tower reactor brings up to 98%.
Embodiment 3:
In ethylene glycol monobutyl ether catalytic distillation equipment, take oxirane and n-butanol as raw material synthesizing glycol monobutyl ether.Filler adopts window diversion filler and rolling metal perforated plate corrugated filler, every layer of structured packing that adopts n=4, and wherein structure A and structure B consist of 10 filler tablets respectively, totally 80 filler tablets.In the packing sheet of Catalyst packing in structure A.Tower diameter DN1200, coils high 170mm, 45 ° of installations of upper and lower two dish filler rotations.The utility model catalytic rectification packing contrasts with using common bale packing type catalyst, and experiment shows, overall presure drop reduction by 25% in tower, and final ethylene glycol monobutyl ether yield has improved 20%.
Embodiment 4:
In n-butyl acetate catalytic distillation equipment, take acetic acid and n-butanol as raw material synthesizing n-butyl acetate.Filler adopts window diversion filler and rolling metal perforated plate corrugated filler, the structured packing of every layer of employing n=6, and wherein structure A and structure B be respectively by 10, totally 120 packing sheets.In the packing sheet of Catalyst packing in structure A.Tower diameter DN1600, coils high 170mm, 30 ° of installations of upper and lower two dish filler rotations.The utility model catalytic rectification packing contrasts with using common bale packing type catalyst, and experiment shows, overall presure drop reduction by 40% in tower, and the amount of substance total recovery of final ester is 78%.
Claims (8)
1. a catalytic rectification packing with radial distribution ability; It is characterized in that being formed by structure A and structure B; Structure A inside consists of packing sheet, and Catalyst packing is in filler, and outside is wrapped up by silk screen; Structure B is structured packing sheet; Two kinds of structures are alternately circumferentially distributed in packing box.
2. filler as claimed in claim 1, is characterized in that described structured packing sheet is the structured packing of window diversion filler, mellapak packing, screen waviness packings, perforated plate corrugated filler, protruded corrugated sheet packing or honeycomb filler.
3. filler as claimed in claim 1, is characterized in that described catalytic rectification packing can be divided into 2n even number filler region, and n is positive integer; Structure A district and structure B district respectively account for half, in the mode of circumferential alternative arrangement, are booked whole packing box.
4. filler as claimed in claim 1, is characterized in that structured packing sheet in described structure A and the structured packing sheet in structure B can identical filler types, also can adopt different filler types.
5. filler as claimed in claim 1, is characterized in that described catalytic rectification packing comprises 2-100 piece packing sheet.
6. filler as claimed in claim 5, is characterized in that when tower diameter is in 100-400mm, and dish is high is 40-100mm variation; When tower diameter is in 400-1000mm, dish is high is 100-150mm variation; When tower diameter is in 1000-3000mm, dish is high is 150-200mm variation; When tower diameter is greater than 3000mm, dish is high is 200-250mm variation.
7. filler as claimed in claim 1, is characterized in that the upper and lower two dish even number region quantities that filler divided can be identical, also can be different; When upper dish filler is divided into 2n region, lower wall filler rotation (180/n) °.
8. filler as claimed in claim 1, is characterized in that the material of described packing sheet is metal, plastics, pottery or graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420051182.0U CN203886555U (en) | 2014-01-26 | 2014-01-26 | Catalytic distillation packing with radial distribution capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420051182.0U CN203886555U (en) | 2014-01-26 | 2014-01-26 | Catalytic distillation packing with radial distribution capability |
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| Publication Number | Publication Date |
|---|---|
| CN203886555U true CN203886555U (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420051182.0U Expired - Fee Related CN203886555U (en) | 2014-01-26 | 2014-01-26 | Catalytic distillation packing with radial distribution capability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752253A (en) * | 2014-01-26 | 2014-04-30 | 中建安装工程有限公司 | Catalytic rectification packing with radial distribution capacity |
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2014
- 2014-01-26 CN CN201420051182.0U patent/CN203886555U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752253A (en) * | 2014-01-26 | 2014-04-30 | 中建安装工程有限公司 | Catalytic rectification packing with radial distribution capacity |
| CN103752253B (en) * | 2014-01-26 | 2017-01-04 | 中建安装工程有限公司 | Catalytic rectification filler with radial distribution capability |
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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 | ||
| 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. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20220126 |