CN2328657Y - Rectification device for diketene - Google Patents
Rectification device for diketene Download PDFInfo
- Publication number
- CN2328657Y CN2328657Y CN 98226703 CN98226703U CN2328657Y CN 2328657 Y CN2328657 Y CN 2328657Y CN 98226703 CN98226703 CN 98226703 CN 98226703 U CN98226703 U CN 98226703U CN 2328657 Y CN2328657 Y CN 2328657Y
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- Prior art keywords
- trap
- falling
- tower
- ketene dimer
- film
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- 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 - Fee Related
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a rectification device for the diketene. The utility model comprises a falling-film tower and a rectification tower. A distribution head is designed on the upper part of the falling-film tower. A row of tube type falling-film evaporators are arranged on the lower part of the falling-film tower. A material outlet is arranged at the bottom. A residue middle groove is arranged at the bottom of the rectification tower. A material buffer, a first level trap, a first level packing node, a second level trap, a second level packing node, a third level trap and a condenser are designed on the upper part of the residue middle groove in sequence. A finished product discharge opening is arranged in each trap. A liquid redistribution device is also arranged in each trap. By adopting the utility model, the vacuum leakage problem does not exist. The content of the rectified diketene is obviously enhanced. The utility model can conduct continuous production. The ability of the production is enhanced.
Description
The utility model relates to a kind of improvement of ketene dimer rectification device.
In the manufacturer of present domestic professional production ketene dimer, the rectifier unit of ketene dimer mainly contains two kinds, a kind of is the thin-film evaporator that has agitator, another kind is the thin-film evaporator that has filler of state type, these two kinds of rectifier units all are provided with chuck, be used for heating ketene dimer, the easy in the course of the work bleed vacuum of these two kinds of rectifier units, make the equipment can not non-stop run, and after adopting the chuck type of heating, heat transfer area is little, and the rectifying amount is little, and the content of the ketene dimer that comes out from these two kinds of rectifier units is not high yet.
The purpose of this utility model is, designs a kind of ketene dimer rectification device, and it can improve the rectifying content of ketene dimer effectively, and can work continuously.
For achieving the above object, the technical solution of the utility model is, a kind of ketene dimer rectification device, it is characterized in that: described ketene dimer rectification device comprises falling-film tower and rectifying tower, upper design at falling-film tower has a distributor head, the bottom is a shell and tube falling-film evaporator, one material outlet is arranged at the bottom, the bottommost of rectifying tower is the residue medial launder, and the bottom of slag is blowdown outlet in the middle of the residue, and the material buffer device has been designed on the top of residue medial launder according to this, the one-level trap, one-level filler joint, secondary trap, secondary filler joint, three-stage trapping device and condenser, be provided with the finished product discharge port in each trap, also be provided with liquid re-distributor, material buffer device in each trap, all be provided with steam admission port and condensation-water drain in each filler joint and the condenser.
The further technical scheme of the utility model is, a kind of ketene dimer rectification device, it is characterized in that: described ketene dimer rectification device comprises falling-film tower and rectifying tower, upper design at falling-film tower has a distributor head, the bottom is a shell and tube falling-film evaporator, one material outlet is arranged at the bottom, the bottommost of rectifying tower is the residue medial launder, have blowdown outlet in the bottom of residue medial launder, the material buffer device has been designed on the top of residue medial launder according to this, one-level trap, one-level filler joint, the secondary trap, secondary filler joint, three-stage trapping device and condenser are provided with the finished product discharge port in each trap, in each trap, also be provided with liquid re-distributor, the material buffer device, all be provided with steam admission port and condensation-water drain in each filler joint with in the condenser.Uniform several V-shaped parts in the distributor head are provided with the annular base of an opening in each liquid re-distributor, several finger-like grooves that is distributed with suitable for reading of annular base, and the top of each finger-like groove is equipped with a tilted-putted flat board.
Advantage of the present utility model: 1, adopt the smart distilled ketene dimer of the utility model content obviously to improve; 2, because the utility model adopts is state type technology, there is not the vacuum leak problem; 3, the utility model can uninterruptedly be produced, and has improved throughput.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
As shown in Figure 1, the utility model comprises falling-film tower 4 and rectifying tower 1, upper design at falling-film tower 4 has a distributor head 2, be evenly equipped with several V-shaped parts 3 in the distributor head 2, V-shaped part 3 can make the crude product ketene dimer enter along tube wall equably to carry out thin film evaporation in the falling-film tower 1, the bottom of falling-film tower 4 is a shell and tube falling-film evaporator 5, and shell and tube falling-film evaporator 5 can increase heating-surface area, and a material outlet 6 is arranged at the bottom of falling-film tower 4; The bottommost of rectifying tower 1 is a residue medial launder 8, the bottom of residue medial launder 8 has blowdown outlet 7, the residue of rectifying discharges from blowdown outlet 7 in the course of the work termly by residue medial launder 8, material buffer device 9 has been designed on top at residue medial launder 8 according to this, one-level trap 11, one-level filler joint 13, secondary trap 15, secondary filler joint 16, three-stage trapping device 17, condenser 22, each trap is provided with finished product Receiving bin 10, in each trap, also be provided with liquid re-distributor 18, be provided with the annular base 19 of an opening in the liquid re-distributor 18, at several finger-like grooves 20 that is distributed with suitable for reading of annular base 19, the top of each finger-like groove 20 is equipped with one tilted-putted dull and stereotyped 21, liquid re-distributor 18 can make the higher gas of temperature that moves upward carry out heat exchange fully with the liquid that cools down on liquid re-distributor 18, makes aceticanhydride be cooled to liquid separation as soon as possible and goes out.All be provided with a steam admission port 14 and a condensation-water drain 12 in material buffer device, each filler joint and the uppermost condenser, also be provided with shell and tube thin-film evaporator 23 in the condenser, make ketene dimer gas further be separated, cool off.
The utility model is when work, crude product ketene dimer gas enters falling-film tower 4 from the import on the falling-film tower 4, under the effect of distributor head 2, the crude product ketene dimer equably along tube wall from falling-film tower 4 top carry out thin film evaporation to the bottom, discharge material from the lower part outlet 6 of falling-film tower 4 again, enter into the material buffer device 9 in the rectifying tower 1, the residue of rectifying discharges from blowdown outlet 7 in the course of the work termly by residue medial launder 8.Ketene dimer gas is through one-level trap 11, and the one-level filler saves 13, secondary trap 15, and secondary filler joint 16, three-stage trapping device 17 enters into condenser 22 at last, makes ketene dimer gas further be separated, cool off.Proof behind use the utility model, can obviously improve ketene dimer content by experiment, reduces aceticanhydride content, and can uninterruptedly produce.
Claims (3)
1, a kind of ketene dimer rectification device, it is characterized in that: described ketene dimer rectification device comprises falling-film tower (4) and rectifying tower (1), upper design at falling-film tower (4) has a distributor head (2), the bottom is a shell and tube falling-film evaporator (5), one material outlet (6) is arranged at the bottom, the bottommost of rectifying tower is residue medial launder (8), one blowdown outlet (7) is arranged at the bottom of residue medial launder, designed material buffer device (9) according to this on the top of residue medial launder (8), one-level trap (11), one-level filler joint (13), secondary trap (15), secondary filler joint (16), three-stage trapping device (17), condenser (22) is provided with finished product discharge port (10) in each trap, in each trap, also be provided with liquid re-distributor (18), the material buffer device, all be provided with steam admission port (14) and condensation-water drain (12) in each filler joint and the condenser.
2, ketene dimer rectification device according to claim 1 is characterized in that: be evenly equipped with several V-shaped parts (3) in the described distributor head (2).
3, ketene dimer rectification device according to claim 1, it is characterized in that: be provided with an annular base (19) in the described liquid re-distributor (18), the some finger-like grooves (20) that are distributed with suitable for reading of annular base (19), there is a tilted-putted flat board (21) top of each finger-like groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98226703 CN2328657Y (en) | 1998-05-05 | 1998-05-05 | Rectification device for diketene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98226703 CN2328657Y (en) | 1998-05-05 | 1998-05-05 | Rectification device for diketene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2328657Y true CN2328657Y (en) | 1999-07-14 |
Family
ID=33977163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98226703 Expired - Fee Related CN2328657Y (en) | 1998-05-05 | 1998-05-05 | Rectification device for diketene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2328657Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339145C (en) * | 2003-03-11 | 2007-09-26 | 纳德销售公司 | Rectifying plant for purifying tertiary amines |
| CN103272399A (en) * | 2013-06-05 | 2013-09-04 | 天津大学 | Baffle plate rectification method and apparatus adjusted by liquid phase flow rate |
| CN104059033A (en) * | 2014-06-19 | 2014-09-24 | 南京师范大学 | Method for separating dust-containing diketene-acetic anhydride mixed liquor by virtue of flash evaporation and vacuum extractive distillation |
| CN106749112A (en) * | 2016-12-08 | 2017-05-31 | 南通醋酸化工股份有限公司 | A kind of ketene dimer continuous rectificating technique |
-
1998
- 1998-05-05 CN CN 98226703 patent/CN2328657Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339145C (en) * | 2003-03-11 | 2007-09-26 | 纳德销售公司 | Rectifying plant for purifying tertiary amines |
| CN103272399A (en) * | 2013-06-05 | 2013-09-04 | 天津大学 | Baffle plate rectification method and apparatus adjusted by liquid phase flow rate |
| CN103272399B (en) * | 2013-06-05 | 2015-11-18 | 天津大学 | A kind of dividing plate rectificating method by liquid phase flow rate adjustment and device thereof |
| CN104059033A (en) * | 2014-06-19 | 2014-09-24 | 南京师范大学 | Method for separating dust-containing diketene-acetic anhydride mixed liquor by virtue of flash evaporation and vacuum extractive distillation |
| CN106749112A (en) * | 2016-12-08 | 2017-05-31 | 南通醋酸化工股份有限公司 | A kind of ketene dimer continuous rectificating technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |