CN203803141U - Liquid collection and redistribution device applied to crylic acid refining process - Google Patents
Liquid collection and redistribution device applied to crylic acid refining process Download PDFInfo
- Publication number
- CN203803141U CN203803141U CN201420248154.8U CN201420248154U CN203803141U CN 203803141 U CN203803141 U CN 203803141U CN 201420248154 U CN201420248154 U CN 201420248154U CN 203803141 U CN203803141 U CN 203803141U
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- Prior art keywords
- liquid
- header
- plate
- acrylic acid
- distributor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000007788 liquid Substances 0.000 title claims abstract description 140
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000007670 refining Methods 0.000 title abstract description 4
- 239000002253 acid Substances 0.000 title abstract 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 34
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 29
- 239000012530 fluid Substances 0.000 claims description 24
- 238000009826 distribution Methods 0.000 claims description 15
- 230000000630 rising effect Effects 0.000 claims description 7
- 238000013329 compounding Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007791 liquid phase Substances 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model discloses a liquid collection and redistribution device applied to a crylic acid refining process, which is arranged between plates of a rectifying tower. The liquid collection and redistribution device comprises a liquid collector, a liquid falling conduit and a liquid re-distributor, wherein the liquid collector is used for collecting liquid falling from an upper tower plate, the upper end of the liquid falling conduit is connected to the liquid collector, the lower end of the liquid falling conduit is connected to the liquid re-distributor, and liquid guided into the liquid collector from the liquid falling conduit is uniformly distributed onto a lower tower plate. The liquid collection and redistribution device is capable of effectively implementing liquid phase collection, mixing and redistribution among the flowing tower plates in the crylic acid refining process, eliminating an amplification effect of the flowing tower plates, improving the separation efficiency of the whole tower and guaranteeing the quality of a crylic acid product.
Description
Technical field
The utility model relates to a kind of chemical industry equipment, is a kind of liquid collection redistributor for acrylic acid subtractive process specifically.
Background technology
Acrylic acid is important organic synthesis raw material and synthetic resin monomer, is the very fast vinyl monomer of polymerization speed.Main production is oxidation of propylene at present, adopts the acrylic acid in water absorption reaction gas to obtain the crude acrylic acid aqueous solution, and crude acrylic acid enters dehydrating tower, with toluene, does entrainer dehydration.Dehydrating tower tower reactor material enters extracting tower, and tower top steams toluene, acetic acid (containing acrylic acid) turns back to dehydrating tower.Depickling tower reactor material enters treating column, and treating column tower top obtains acrylic products, and tower reactor material goes acrylic acid to reclaim, take off heavy constituent.
For avoiding cannot normal operating because of acroleic acid polymerization, acrylic acid subtractive process all adopts macropore dual-flow tray as the mass transfer elements of acrylic acid purification at present.Due to the restriction of dual-flow tray self structure, the height of liquid layer on every layer of column plate is very low, gas, liquid all from column plate perforate percolation pass through, liquid substantially radially mixes on column plate cross section, distribution effect again, causes that plate efficiency is low, enlarge-effect is obvious.
As shown in Figure 1, the full tower of de-acetic acid tower 100 adopts 35 layers of dual-flow tray 101.
Press the de-acetic acid tower structure of the conventional acrylic acid refining plant shown in Fig. 1, in de-acetic acid tower tower reactor crude acrylic acid, acetic acid content is in 2000ppm left and right, and the final purity of acrylic acid product approximately 99.7% obtaining, wherein about acetic acid content 2000ppm.The requirement improving along with acrylate purity at present, in acrylic products, acetic acid content need be down to below 500ppm.In the face of maximization and the further demand improving of purity of acrylic acid product of acroleic acid device, acrylic acid subtractive process only adopts conventional turbogrid tower to be difficult to meet the demands.
Utility model content
The purpose of this utility model is to provide a kind of liquid collection redistributor for acrylic acid subtractive process, it is simple in structure, easy to implement, can effectively complete the liquid phase between dual-flow tray in acrylic acid subtractive process collects, mixes and distribute, eliminate the enlarge-effect of dual-flow tray, improve full tower separative efficiency, guarantee acrylic products quality.
For achieving the above object, the utility model is by the following technical solutions:
For a liquid collection redistributor for acrylic acid subtractive process, be arranged between the column plate of rectifying column, it comprises, liquid header is collected the liquid of last layer column plate landing; Fall fluid catheter, its upper end is connected in described liquid header; Liquid re-distributor, falls fluid catheter lower end described in connection, and the uniform liquid in falling the liquid header that fluid catheter imports is distributed on lower one deck column plate.
Further, described liquid header adopts and rises inflator tube type liquid header, venetian blind type liquid header, macroporous plate, resistance to stifled bar valve column plate or parallel jet compounding tower plate (JCPT column plate).
Again, described liquid re-distributor adopts overflow groove type liquid distribution trough or calandria liquid distributors.
Preferably, described liquid header adopts and rises inflator tube type liquid header, and it comprises base plate, rising inflator and rising inflator cover plate on base plate is set; Base plate central authorities establish for falling the through hole that fluid catheter wears.
Preferably, described liquid header is griddle template liquid header, and it comprises macroporous plate and be positioned at the liquid-droping groove of macroporous plate central authorities, described in fall fluid catheter upper end and be connected in liquid-droping groove.
Preferably, described liquid re-distributor is overflow groove type liquid distribution trough, and it comprises liquid distribution trough major trough, some grooves that arrange along major trough both sides, and major trough and a groove side or base plate are established some through holes.
Preferably, described liquid re-distributor is calandria liquid distributors, it comprise fluid catheter falls described in correspondence and be subject to liquid pipe, with the supervisor who be connected by liquid pipe lower end, along the equally distributed some arms in supervisor length direction both sides, some through holes are established in each arm bottom or side.
Fluid catheter falls in the utility model except completing this basic function in the liquid importing liquid re-distributor of liquid header collection, more importantly whole liquid on last layer column plate is mixed completely, and then through liquid re-distributor, the uniform liquid of concentration homogeneous is distributed on lower one deck column plate, the uniform liquid of having realized the full tower section of dual-flow tray mixes and distributes.
The utility model liquid collection redistributor can be used for de-acetic acid tower, the acrylic acid treating column in acrylic acid subtractive process, also can be used for dealcoholize column, treating column in methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethyl hexyl acrylate subtractive process.
The beneficial effects of the utility model:
The utility model by liquid header, fluid catheter, the organic combination of liquid re-distributor are fallen, whole liquid on last layer column plate is mixed completely, and then the uniform liquid of concentration homogeneous is distributed on lower one deck column plate through liquid re-distributor, the uniform liquid of having realized the full tower section of dual-flow tray mixes and distributes, and, there is feature simple in structure, easy to implement.
Accompanying drawing explanation
Fig. 1 is the de-acetic acid tower sketch in a kind of typical acrylic acid subtractive process.Full tower adopts 35 layers of dual-flow tray 101.
Fig. 2 is the use view of the utility model one embodiment, and it is a kind of de-acetic acid tower schematic diagram with two cover liquid collection redistributors.
Fig. 3, Fig. 4 are liquid header in the utility model embodiment (rising inflator tube type liquid header) structural representations.
Fig. 5, Fig. 6 are liquid header in the utility model embodiment (griddle template) structural representation.
Fig. 7, Fig. 8 are liquid re-distributor in the utility model embodiment (overflow groove type liquid distribution trough) structural representation.
Fig. 9～Figure 11 is liquid re-distributor in the utility model embodiment (calandria liquid distributors) structural representation.
The specific embodiment
Referring to Fig. 2～Figure 11, a kind of liquid collection redistributor A for acrylic acid subtractive process of the present utility model, is arranged between the column plate of rectifying column 100, and it comprises, liquid header 1 is collected the liquid of last layer column plate landing; Fall fluid catheter 2, its upper end is connected in described liquid header 1; Liquid re-distributor 3, falls fluid catheter 2 lower ends described in connection, and the uniform liquid in falling the liquid header that fluid catheter 2 imports is distributed on lower one deck column plate.
In the present embodiment, full tower adopts between 101, the 11,12 layers of dual-flow tray of 35 layers of dual-flow tray and is provided with a set of liquid collection redistributor A; 22nd, between 23 layers of dual-flow tray, be provided with a set of liquid collection redistributor A '.Liquid header 1, for collecting the liquid of last layer column plate (the 23rd layer of column plate 23#) landing, is then directed at liquid re-distributor 3 through falling fluid catheter 2, is uniformly distributed on lower one deck column plate (the 22nd layer of column plate 22#).Liquid header 1, for collecting the liquid of last layer column plate (the 12nd layer of column plate 12#) landing, is then directed at liquid re-distributor 3 through falling fluid catheter 2, is evenly distributed on lower one deck column plate (11th layer column plate 11#).
Further, described liquid header adopts and rises inflator tube type liquid header, venetian blind type liquid header, macroporous plate, resistance to stifled bar valve column plate or parallel jet compounding tower plate (JCPT column plate).
Again, described liquid re-distributor adopts overflow groove type liquid distribution trough or calandria liquid distributors.
Referring to Fig. 3, Fig. 4, described liquid header 1 adopts and rises inflator tube type liquid header, and it comprises base plate 11, rising inflator 12 and rising inflator cover plate 13 on base plate 11 is set; Base plate 11 central authorities establish for falling the through hole 111 that fluid catheter 2 wears.
Referring to Fig. 5, Fig. 6, described liquid header 1 is griddle template liquid header, and it comprises macroporous plate 14 and be positioned at the liquid-droping groove 15 of macroporous plate 14 central authorities, described in fall fluid catheter 2 upper ends and be connected in liquid-droping groove 15.
Referring to Fig. 7, Fig. 8, described liquid re-distributor 3 is overflow groove type liquid distribution trough, and it comprises liquid distribution trough major trough 31, some the grooves 32 that arrange along major trough 31 both sides, and major trough 31 and groove 32 side or base plate are established some through holes.The liquid that falls fluid catheter from liquid header is introduced into liquid distribution trough major trough, is then evenly distributed to each groove of liquid distribution trough, then is evenly distributed to whole tower section by the perforate of major trough and a groove side (or base plate).
Referring to Fig. 9～Figure 11, described liquid re-distributor 3 is calandria liquid distributors, it comprise fluid catheter falls described in correspondence and be subject to liquid pipe 33, with the supervisor 34 who be connected by liquid pipe 33 lower ends, along supervisor's 34 equally distributed some arms 35 in length direction both sides, some through holes are established in each arm bottom or side.
The liquid that falls fluid catheter from liquid header is introduced into liquid distribution trough and is subject to liquid pipe, is then imported into liquid re-distributor supervisor, then is evenly distributed to each arm of liquid distribution trough, then be evenly distributed to whole tower section by the perforate of arm bottom or side.
Claims (7)
1. for a liquid collection redistributor for acrylic acid subtractive process, be arranged between the column plate of rectifying column, it is characterized in that, comprise,
Liquid header, collects the liquid of last layer column plate landing;
Fall fluid catheter, its upper end is connected in described liquid header;
Liquid re-distributor, falls fluid catheter lower end described in connection, and the uniform liquid in falling the liquid header that fluid catheter imports is distributed on lower one deck column plate.
2. the liquid collection redistributor for acrylic acid subtractive process as claimed in claim 1, it is characterized in that, described liquid header adopts and rises inflator tube type liquid header, venetian blind type liquid header, macroporous plate, resistance to stifled bar valve column plate or parallel jet compounding tower plate.
3. the liquid collection redistributor for acrylic acid subtractive process as claimed in claim 1, is characterized in that, described liquid re-distributor adopts overflow groove type liquid distribution trough or calandria liquid distributors.
4. the liquid collection redistributor for acrylic acid subtractive process as claimed in claim 1, is characterized in that, described liquid header adopts and rises inflator tube type liquid header, and it comprises base plate, rising inflator and rising inflator cover plate on base plate is set; Base plate central authorities establish for falling the through hole that fluid catheter wears.
5. the liquid collection redistributor for acrylic acid subtractive process as claimed in claim 1, it is characterized in that, described liquid header is griddle template liquid header, and it comprises macroporous plate and be positioned at the liquid-droping groove of macroporous plate central authorities, described in fall fluid catheter upper end and be connected in liquid-droping groove.
6. the liquid collection redistributor for acrylic acid subtractive process as claimed in claim 1, it is characterized in that, described liquid re-distributor is overflow groove type liquid distribution trough, it comprises liquid distribution trough major trough, some grooves that arrange along major trough both sides, and major trough and a groove side or base plate are established some through holes.
7. the liquid collection redistributor for acrylic acid subtractive process as claimed in claim 1, it is characterized in that, described liquid re-distributor is calandria liquid distributors, it comprise fluid catheter falls described in correspondence and be subject to liquid pipe, with the supervisor who be connected by liquid pipe lower end, along the equally distributed some arms in supervisor length direction both sides, some through holes are established in each arm bottom or side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420248154.8U CN203803141U (en) | 2014-05-14 | 2014-05-14 | Liquid collection and redistribution device applied to crylic acid refining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420248154.8U CN203803141U (en) | 2014-05-14 | 2014-05-14 | Liquid collection and redistribution device applied to crylic acid refining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203803141U true CN203803141U (en) | 2014-09-03 |
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ID=51441955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420248154.8U Expired - Lifetime CN203803141U (en) | 2014-05-14 | 2014-05-14 | Liquid collection and redistribution device applied to crylic acid refining process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203803141U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413222A (en) * | 2015-12-29 | 2016-03-23 | 天津市创举科技有限公司 | Dual layer equal effect tower plate |
| CN112299987A (en) * | 2020-11-18 | 2021-02-02 | 山东斯瑞药业有限公司 | Acrylic acid purification dehydrogenation tower |
-
2014
- 2014-05-14 CN CN201420248154.8U patent/CN203803141U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413222A (en) * | 2015-12-29 | 2016-03-23 | 天津市创举科技有限公司 | Dual layer equal effect tower plate |
| CN112299987A (en) * | 2020-11-18 | 2021-02-02 | 山东斯瑞药业有限公司 | Acrylic acid purification dehydrogenation tower |
| CN112299987B (en) * | 2020-11-18 | 2022-07-22 | 山东斯瑞药业有限公司 | Acrylic acid purification dehydrogenation tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |