CN109806607A - A kind of device that material purity can be improved - Google Patents
A kind of device that material purity can be improved Download PDFInfo
- Publication number
- CN109806607A CN109806607A CN201711167076.3A CN201711167076A CN109806607A CN 109806607 A CN109806607 A CN 109806607A CN 201711167076 A CN201711167076 A CN 201711167076A CN 109806607 A CN109806607 A CN 109806607A
- Authority
- CN
- China
- Prior art keywords
- concentrate
- tower
- concentration tower
- heat exchange
- heat
- 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.)
- Pending
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- 239000000463 material Substances 0.000 title claims abstract description 69
- 239000012141 concentrate Substances 0.000 claims abstract description 46
- 238000007599 discharging Methods 0.000 claims abstract description 26
- 230000008676 import Effects 0.000 claims abstract description 17
- 238000005086 pumping Methods 0.000 claims description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 abstract description 16
- 239000002994 raw material Substances 0.000 abstract description 16
- 150000001336 alkenes Chemical class 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000000470 constituent Substances 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A kind of device that material purity can be improved, solve olefin impurity of the existing technology with target product is more difficult separates, material purity is seriously affected, the problem of deficiency in economic performance.Including concentration tower and heat exchanger, it is characterized by: the import of heat exchanger cold material is connected with heat exchange feeding line, the outlet of heat exchanger cold material is connected by feeding line in the middle part of concentrate with feed inlet in the middle part of concentration tower, and concentration tower side take-off mouth is connected by concentrate side take-off pipeline with exchanger heat material inlet；Exchanger heat material outlet is connected by heat exchange discharging pipeline with head tank；Concentration tower ejects material mouth and is connected with concentrate ejection expects pipe line, and concentration tower bottom discharge port is connected by concentrate bottom discharging pipeline with the entrance of bottom drawing pump.It is designed rationally, compact-sized, the n-butene in remaining C4 alkene can be separated, and then react the n-butene in raw material sufficiently, be reduced the cost of raw material, improve the economic benefit of product.
Description
Technical field
The invention belongs to technical field of chemical raw material production, and in particular to one kind can make the n-butene in raw material sufficiently anti-
It answers, reduces cost of material, improve the device that material purity can be improved of product economy benefit.
Background technique
N-butene prepares the reaction process of sec-butyl acetate in acetic acid and mixing C4 alkene, can polymerize with n-butene
Side reaction occurs, and generates more difficult isolated C8 alkene；And the boiling point of this kind of olefin impurity and the boiling point of target product extremely connect
Closely, the more difficult separation in existing reaction system, considerably increases the exquisite difficulty of sec-butyl acetate, while also seriously affecting
The purity of raw material.In addition, since the n-butene in mixing C4 alkene also participates in reaction, so when reaction effect is bad, reaction
The content of n-butene just will increase in remaining C4 alkene, to further result in the decline of material purity.Therefore in order to make raw material
N-butene reaction effect in C4 alkene reaches maximization, solves the problems, such as that material purity is low, it is necessary to mention to existing raw material
Pure device is improved.
Summary of the invention
The present invention addresses the above problem, and providing one kind can be such that the n-butene in raw material sufficiently reacts, and reduces raw material
Cost improves the device that material purity can be improved of product economy benefit.
The technical scheme adopted by the invention is that: the device that material purity can be improved includes concentration tower and heat exchanger,
Be characterized in that: the concentration tower is made of tower main body, and ejection material mouth is provided at the top of tower main body, and the bottom of tower main body is provided with
Bottom discharge port is provided with middle part feed inlet on the side wall of tower main body middle and upper part, is provided with side line on the side wall of tower lower body part and adopts
Outlet；Between tower body interior, middle part feed inlet and bottom discharge port, it is provided with several layers float valve tray；The heat exchanger is by changing
Hot shell is constituted, and the two sides for the shell that exchanges heat are respectively arranged with cold material import and cold material outlet, the both ends difference for the shell that exchanges heat
It is provided with thermal material import and material outlet；Be provided with hollow heat exchanging fin in heat exchange shell, the entrance of heat exchanging fin with
The cold material import is connected, and the outlet of heat exchanging fin is connected with cold material outlet；The cold material import of the heat exchanger
It is connected with heat exchange feeding line, the middle part feed inlet that the cold material outlet of heat exchanger passes through feeding line and concentration tower in the middle part of concentrate
It is connected, the side take-off mouth of concentration tower is connected by concentrate side take-off pipeline with the thermal material import of heat exchanger；Heat exchanger
Material outlet is connected by heat exchange discharging pipeline with head tank；The ejection material mouth of the concentration tower ejects expects pipe line phase with concentrate
Even, the bottom discharge port of concentration tower is connected by concentrate bottom discharging pipeline with the entrance of bottom drawing pump, the outlet and pumping of bottom drawing pump
Expects pipe line is pumped out out to be connected.
The bottom discharge outlet of the concentrate tower bottom is provided with anti-vortex board.To ensure that tower bottom heavy constituent is smoothly discharged out.
Tower body insulating layer is provided in the tower main body of the concentration tower.To promote the stability of temperature in concentration tower.
Feeding line, heat exchange discharging pipeline, heat exchange feeding line, concentrate side take-off pipeline, concentrate in the middle part of the concentrate
Bottom discharges on pipeline, drawing pump discharging pipeline and concentrate ejection expects pipe line, is provided with control valve.In order to process flow
Control, and facilitate the maintenance of equipment.
On the concentrate side take-off pipeline, one end for being connected with concentration tower lower part, be provided at least two connecting lines.
Neatly to adjust the produced quantity of n-butene in concentration tower according to needs are specifically used.
Beneficial effects of the present invention: since the present invention is using the concentration tower being made of tower main body, the top and bottom of tower main body
Portion is respectively arranged with ejection material mouth and bottom discharge port, tower main body middle and upper part setting middle part feed inlet, and side line is arranged in tower lower body part
Produce mouth；The import of heat exchanger cold material is connected with heat exchange feeding line, and the outlet of heat exchanger cold material passes through feed pipe in the middle part of concentrate
Feed inlet is connected in the middle part of line and concentration tower, concentration tower side take-off mouth by concentrate side take-off pipeline and exchanger heat material into
Mouth is connected；Exchanger heat material outlet is connected by heat exchange discharging pipeline with head tank；Concentration tower ejects material mouth and concentrate ejects
Expects pipe line is connected, the structure type that concentration tower bottom discharge port is connected by concentrate bottom discharging pipeline with the entrance of bottom drawing pump, institute
Rationally with its design, compact-sized, the n-butene in remaining C4 alkene can be separated, and then make the n-butene in raw material
Sufficiently reaction, reduces the cost of raw material, improves the economic benefit of product.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention.
Fig. 2 is a kind of structural schematic diagram of the concentration tower in Fig. 1.
Fig. 3 is a kind of structural schematic diagram of the heat exchanger in Fig. 1.
Number explanation in figure: 1 concentration tower, feeding line in the middle part of 2 concentrates, 3 heat exchangers, 4 heat exchange discharging pipelines, 5 exchange heat into
Expects pipe line, 6 concentrate side take-off pipelines, 7 concentrate bottoms discharging pipeline, 8 bottom drawing pumps, 9 drawing pumps discharging pipeline, the ejection of 10 concentrates
Expects pipe line, 11 tower main bodys, 12 middle part feed inlets, 13 side take-off mouths, 14 bottom discharge ports, 15 float valve trays, 16 ejection material mouths, 17
Exchange heat shell, 18 cold material imports, 19 thermal material imports, the outlet of 20 cold materials, 21 material outlets.
Specific embodiment
According to Fig. 1~3 specific structure that the present invention will be described in detail.The device that material purity can be improved includes concentration tower 1
With heat exchanger 3, wherein concentration tower 1 is made of tower main body 11, is provided at the top of the tower main body 11 of concentration tower 1 for being discharged light group
The ejection material mouth 16 divided, the bottom of tower main body 11 is provided with for heavy constituent bottom discharge port 14 to be discharged；11 middle and upper part of tower main body
On side wall, it is provided with the middle part feed inlet 12 for inputting raw material, is provided on the side wall of 11 lower part of tower main body for producing tower
The side take-off mouth 13 of interior n-butene.Inside the tower main body 11 of concentration tower 1, between middle part feed inlet 12 and bottom discharge port 14, if
It is equipped with several layers float valve tray 15.In order to ensure tower bottom heavy constituent is smoothly discharged out, set at the bottom discharge port 14 of 1 bottom of concentration tower
It is equipped with anti-vortex board.In addition, being also set up in the tower main body 11 of concentration tower 1 for the purpose for promoting temperature stability in concentration tower 1
There is tower body insulating layer.
Heat exchanger 3 is made of heat exchange shell 17；The left and right sides of the heat exchange shell 17 of heat exchanger 3, is separately provided for
The cold material import 18 and cold material outlet 20 that raw material passes through；Exchange heat shell 17 upper and lower ends, be respectively arranged with thermal material into
Mouth 19 and material outlet 21.Hollow heat exchanging fin, the entrance and heat exchange shell of heat exchanging fin are provided in heat exchange shell 17
Cold material import 18 on 17 is connected, and the outlet of heat exchanging fin is then connected with the cold material outlet 20 on heat exchange shell 17.
The cold material import 18 of heat exchanger 3 is connected with heat exchange feeding line 5, and the cold material outlet 20 of heat exchanger 3 is by the middle part of concentrate
Feeding line 2 is connected with the middle part feed inlet 12 of concentration tower 1；The side take-off mouth 13 of concentration tower 1 passes through concentrate side take-off
Pipeline 6 is connected with the thermal material import 19 of heat exchanger 3；The material outlet 21 of heat exchanger 3 passes through heat exchange discharging pipeline 4 and original
Batch can is connected.The ejection material mouth 16 of concentration tower 1 is connected with concentrate ejection expects pipe line 10, and concentrate ejects expects pipe line 10 and light group
Bulb separation tank is connected；The bottom discharge port 14 of concentration tower 1 is connected by concentrate bottom discharging pipeline 7 with the entrance of bottom drawing pump 8, and bottom is taken out
The outlet of pump 8 is connected with drawing pump discharging pipeline 9 out, and drawing pump discharging pipeline 9 is connected with heavy constituent spherical tank.In order to neatly
The produced quantity for adjusting n-butene in concentration tower 1, on concentrate side take-off pipeline 6, one end for being connected with 1 lower part of concentration tower, if
It is equipped at least two connecting lines.
For the convenient purpose to process control, feeding line 2, the discharging pipeline 4 that exchanges heat, heat exchange charging in the middle part of concentrate
On pipeline 5, concentrate side take-off pipeline 6, concentrate bottom discharging pipeline 7, drawing pump discharging pipeline 9 and concentrate ejection expects pipe line 10,
It is provided with control valve；And it is convenient for the maintenance of equipment.
The device of material purity can be improved for this in use, raw material passes through heat exchange feeding line 5 first enters heat exchanger 3
It is interior, and then progress concentrate reaction in concentration tower 1 is transported to via feeding line 2 in the middle part of concentrate.Due to each layer float valve tray 15
Column plate on open up there are many hole, be fitted with float valve on each hole, when there is vapour phase rising, float valve is upward by shock of steamy flow
It opens (aperture can increase with the increase of vapour phase amount), rises vapour phase and pass through valve opening, to horizontal direction under the action of float valve piece
Dispersion is bubbled, and then comes into full contact with vehicle repair major by liquid level, reaches ideal heat and mass effect.Reaction institute
The light component of generation ejects material mouth 16 via concentration tower 1 and concentrate ejection expects pipe line 10 enters in light component spherical tank；It generates
Heavy constituent is entered in bottom drawing pump 8 by 1 bottom discharge port 14 of concentration tower and concentrate bottom discharging pipeline 7, using bottom drawing pump 8
Pumping, from drawing pump discharging pipeline 9 enter in heavy constituent spherical tank.And the n-butene separated (want compared with raw material by temperature
It is high), then it is entered in concentrate side take-off pipeline 6 by the side take-off mouth 13 of concentration tower 1, using heat exchanger 3 heat
The raw material conveyed via heat exchange feeding line 5 into concentration tower 1 is passed to, to carry out pre-heating to raw material, and then promotes reaction
Efficiency；Finally, the n-butene after heat transfer enters in head tank via heat exchange discharging pipeline 4.
Claims (5)
1. a kind of device that material purity can be improved, including concentration tower (1) and heat exchanger (3), it is characterised in that: the concentration tower
(1) it is made of tower main body (11), ejection material mouth (16) is provided at the top of tower main body (11), the bottom of tower main body (11) is provided with
Bottom discharge port (14) is provided with middle part feed inlet (12), the side of tower main body (11) lower part on the side wall of tower main body (11) middle and upper part
Side take-off mouth (13) are provided on wall；Between tower main body (11) inside, middle part feed inlet (12) and bottom discharge port (14), setting
There are several layers float valve tray (15)；The heat exchanger (3) is made of heat exchange shell (17), and the two sides of heat exchange shell (17) are set respectively
It is equipped with cold material import (18) and cold material outlet (20), the both ends of heat exchange shell (17) are respectively arranged with thermal material import (19)
With material outlet (21)；Hollow heat exchanging fin, the entrance of heat exchanging fin and the cold object are provided in heat exchange shell (17)
Expect that import (18) are connected, the outlet of heat exchanging fin exports (20) with the cold material and is connected；The cold material of the heat exchanger (3) into
Mouth (18) is connected with heat exchange feeding line (5), and the cold material outlet (20) of heat exchanger (3) passes through feeding line (2) in the middle part of concentrate
It is connected with the middle part feed inlet (12) of concentration tower (1), the side take-off mouth (13) of concentration tower (1) passes through concentrate side take-off pipeline
(6) it is connected with the thermal material import (19) of heat exchanger (3)；The material outlet (21) of heat exchanger (3) passes through heat exchange discharging pipeline
(4) it is connected with head tank；The ejection material mouth (16) of the concentration tower (1) is connected with concentrate ejection expects pipe line (10), concentration tower (1)
Bottom discharge port (14) by concentrate bottom discharging pipeline (7) be connected with the entrance of bottom drawing pump (8), the outlet of bottom drawing pump (8)
It is connected with drawing pump discharging pipeline (9).
2. the device according to claim 1 that material purity can be improved, it is characterised in that: concentration tower (1) bottom
Bottom discharge port is provided with anti-vortex board at (14).
3. the device according to claim 1 that material purity can be improved, it is characterised in that: the tower master of the concentration tower (1)
Body is provided with tower body insulating layer on (11).
4. the device according to claim 1 that material purity can be improved, it is characterised in that: feeding line in the middle part of the concentrate
(2), heat exchange discharging pipeline (4), heat exchange feeding line (5), concentrate side take-off pipeline (6), concentrate bottom discharging pipeline (7), pumping
It is pumped out on expects pipe line (9) and concentrate ejection expects pipe line (10) out, is provided with control valve.
5. the device according to claim 1 that material purity can be improved, it is characterised in that: the concentrate side take-off pipeline
(6) one end being connected on, with concentration tower (1) lower part is provided at least two connecting lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167076.3A CN109806607A (en) | 2017-11-21 | 2017-11-21 | A kind of device that material purity can be improved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167076.3A CN109806607A (en) | 2017-11-21 | 2017-11-21 | A kind of device that material purity can be improved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109806607A true CN109806607A (en) | 2019-05-28 |
Family
ID=66600466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711167076.3A Pending CN109806607A (en) | 2017-11-21 | 2017-11-21 | A kind of device that material purity can be improved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109806607A (en) |
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| PB01 | Publication | ||
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Application publication date: 20190528 |
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| RJ01 | Rejection of invention patent application after publication |