CN209714332U - A kind of acetonitrile rectifying column - Google Patents
A kind of acetonitrile rectifying column Download PDFInfo
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- CN209714332U CN209714332U CN201920242184.0U CN201920242184U CN209714332U CN 209714332 U CN209714332 U CN 209714332U CN 201920242184 U CN201920242184 U CN 201920242184U CN 209714332 U CN209714332 U CN 209714332U
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- acetonitrile
- lightness
- condenser
- purity
- rectifying column
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- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 title claims abstract description 195
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000003039 volatile agent Substances 0.000 claims abstract description 14
- 238000010992 reflux Methods 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000007670 refining Methods 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000005086 pumping Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000000998 batch distillation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to a kind of acetonitrile rectifying columns, lightness-removing column top is provided with front-end volatiles pipeline, condenser is connected on front-end volatiles pipeline, condenser is connected with return tank, the reflux pot bottom is connected with intermediate pump, the intermediate pump other end connects reboiler and light component produces mouth, the reboiler other end is connected on lightness-removing column, lightness-removing column bottom is provided with the outlet of bottom liquid, bottom liquid is provided with mateiral pump in outlet, the mateiral pump other end is acetonitrile feed pipe, acetonitrile feed pipe is arranged on rectifying column, low-purity fraction pipe is provided at the top of rectifying column, low-purity fraction pipe end is connected with condenser, condenser is provided with low-purity acetonitrile tank, rectifier bottoms are provided with residual kettle outlet, mateiral pump is provided in residual kettle outlet, high-purity fraction pipe is provided in the middle part of rectifying column, high-purity fraction pipe end is provided with condenser, Condenser is provided with acetonitrile of high purity tank；The utility model has the advantages that using simple, refining effect is good, energy consumption is low.
Description
Technical field
The utility model relates to chemical industry technical field of rectification, and in particular to a kind of acetonitrile rectifying column.
Background technique
Existing acetonitrile rectifying is first to be added whole materials in batch distillation process using the method for batch fractionating
Enter in rectifying column, then be gradually heated up vaporization, after condensing, a part is used as and distillates liquid product the steam drawn from tower top, another
Part is sent back to as reflux and carries out circulation rectifying in tower, by adopting light component, then adopts front-end volatiles again, finally adopts qualified acetonitrile,
The method only has rectifying section in application process, directly carries out rectifying to product, needs to obtain by multiple circulation rectifying
To the higher acetonitrile product of purity, the consumption of this process energy consumption is larger, and acetonitrile purity is lower, cannot meet the needs of production；
Therefore it provides a kind of be necessary using the acetonitrile rectifying column simple, refining effect is good, energy consumption is low.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and provide a kind of using simple, refining effect
Acetonitrile rectifying column good, energy consumption is low.
Purpose of the utility model is realized as follows: a kind of acetonitrile rectifying column, it includes rectifying column and lightness-removing column, described
Lightness-removing column top is provided with front-end volatiles pipeline, and condenser is connected on the front-end volatiles pipeline, and the condenser is connected with
Return tank, the reflux pot bottom are connected with intermediate pump, and the intermediate pump other end connection reboiler and light component produce mouth, institute
It states the reboiler other end to be connected on lightness-removing column, light component extraction mouth lower part is provided with receiving tank, the lightness-removing column side
It is provided with feed inlet, the lightness-removing column bottom is provided with the outlet of bottom liquid, and mateiral pump, the pumping material are provided in the bottom liquid outlet
The pump other end is acetonitrile feed pipe, and the acetonitrile feed pipe is arranged on rectifying column, is provided with low-purity at the top of the rectifying column
Fraction pipe, the low-purity fraction pipe end are connected with condenser, and the condenser is provided with low-purity acetonitrile tank, described
Rectifier bottoms are provided with residual kettle outlet, are provided with mateiral pump in the residual kettle outlet, are provided in the middle part of the rectifying column high-purity
Fraction pipe is spent, the high-purity fraction pipe end is provided with condenser, and the condenser is provided with acetonitrile of high purity tank.
Front-end volatiles pipeline flow to receiving tank, another part warp for producing light component, light component a part at the top of lightness-removing column
It crosses reboiler to flow in lightness-removing column, recycle fraction.
Acetonitrile feed pipe is connected with the outlet of bottom liquid, and the material that lightness-removing column is discharged by mateiral pump is as feedstock transportation to essence
It evaporates in tower.
Intermediate pump select IJ80-50-200, can equilibrium reflux pressure inside the tank, control the flow of reflux.
The utility model has the beneficial effects that the utility model adds a lightness-removing column in front of rectifying column, it is first that raw material is defeated
Be sent in lightness-removing column, light component adopted at the top of lightness-removing column, the light component of extraction after return tank, a part flow back into it is de- light
In tower, circulation is completed, after repeatedly recycling extraction light component, the bottom storage of lightness-removing column has acetonitrile material, acetonitrile material warp
It crosses mateiral pump to reach in rectifying column, in the rectifying by rectifying column, the acetonitrile of low-purity is produced at the top of rectifying column, by condensation
After collect, acetonitrile of high purity is produced in the middle part of tower, residual kettle is discharged in rectifier bottoms, relative to traditional intermittent acetonitrile essence
It evaporates, this mode completes the extraction of light component first in lightness-removing column, reduces the impurity of acetonitrile product, and by the light of top extraction
Component carries out circulation rectifying, keeps the purity of acetonitrile product higher, economizes on resources；The utility model is simple with a kind of use, mentions
The advantage that pure effect is good, energy consumption is low.
Detailed description of the invention
Fig. 1 is the utility model acetonitrile rectifying tower structure schematic diagram.
1, lightness-removing column 2, rectifying column 3, feed inlet 4, front-end volatiles pipeline 5, bottom liquid export 6, condenser in figure
7, return tank 8, intermediate pump 9, reboiler 10, reflux line 11, light component extraction mouth 12, receiving tank 13, pumping
Material pump 14, acetonitrile feed pipe 15, low-purity fraction pipe 16, residual kettle export 17, low-purity acetonitrile tank 18, high-purity
Fraction pipe 19, acetonitrile of high purity tank.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 1, a kind of acetonitrile rectifying column, it includes rectifying column 2 and lightness-removing column 1, and 1 top of lightness-removing column is provided with
Front-end volatiles pipeline 4 is connected with condenser 6 on the front-end volatiles pipeline 4, and 6 lower part of condenser is connected with return tank 7, described
7 bottom of return tank is connected with intermediate pump 8, and 8 other end of the intermediate pump connection reboiler 9 and light component produce mouth 11, it is described again
Boiling 9 other end of device is connected on lightness-removing column 1, and the light component extraction 11 lower part of mouth is provided with receiving tank 12, the lightness-removing column 1 one
Side is provided with feed inlet 3, and 1 bottom of lightness-removing column is provided with bottom liquid outlet 5, is provided with mateiral pump 13 in the bottom liquid outlet 5,
13 other end of mateiral pump is acetonitrile feed pipe 14, and the acetonitrile feed pipe 14 is arranged on rectifying column 2, the rectifying column 2
Top is provided with low-purity fraction pipe 15, and 15 end of low-purity fraction pipe is connected with condenser 6,6 lower part of condenser
It is provided with low-purity acetonitrile tank 17,2 bottom of rectifying column is provided with residual kettle outlet 16, is provided with pumping in the residual kettle outlet 16
Material pumps 13, is provided with high-purity fraction pipe 18 in the middle part of the rectifying column 2,18 end of high-purity fraction pipe is provided with condenser
6,6 lower part of condenser is provided with acetonitrile of high purity tank 19.
The utility model is in front of rectifying column 2 plus a lightness-removing column 1 is taking off gently first by feedstock transportation to lightness-removing column 1
Light component is adopted at the top of tower 1, after return tank 7, a part is being flow back into lightness-removing column 1 light component of extraction, completes circulation, warp
After crossing repeatedly circulation extraction light component, the bottom storage of lightness-removing column 1 has acetonitrile material, and acetonitrile material reaches essence by mateiral pump 13
It evaporates in tower 2, using the rectifying of rectifying column 2, the acetonitrile of low-purity is produced at the top of rectifying column 2, is collected after condensation, in tower
Middle part produces acetonitrile of high purity, residual kettle is discharged in 2 bottom of rectifying column, relative to traditional intermittent acetonitrile rectifying, this mode is first
The extraction that light component is first completed in lightness-removing column 1 reduces the impurity of acetonitrile product, and the light component that top produces is followed
Ring rectifying keeps the purity of acetonitrile product higher, economizes on resources；The utility model has a kind of using simple, refining effect is good, energy
Low advantage is expended in source.
Embodiment 2
As shown in Figure 1, a kind of acetonitrile rectifying column, it includes rectifying column 2 and lightness-removing column 1, and 1 top of lightness-removing column is provided with
Front-end volatiles pipeline 4 is connected with condenser 6 on the front-end volatiles pipeline 4, and 6 lower part of condenser is connected with return tank 7, described
7 bottom of return tank is connected with intermediate pump 8, and 8 other end of the intermediate pump connection reboiler 9 and light component produce mouth 11, it is described again
Boiling 9 other end of device is connected on lightness-removing column 1, and the light component extraction 11 lower part of mouth is provided with receiving tank 12, the lightness-removing column 1 one
Side is provided with feed inlet 3, and 1 bottom of lightness-removing column is provided with bottom liquid outlet 5, is provided with mateiral pump 13 in the bottom liquid outlet 5,
13 other end of mateiral pump is acetonitrile feed pipe 14, and the acetonitrile feed pipe 14 is arranged on rectifying column 2, the rectifying column 2
Top is provided with low-purity fraction pipe 15, and 15 end of low-purity fraction pipe is connected with condenser 6,6 lower part of condenser
It is provided with low-purity acetonitrile tank 17,2 bottom of rectifying column is provided with residual kettle outlet 16, is provided with pumping in the residual kettle outlet 16
Material pumps 13, is provided with high-purity fraction pipe 18 in the middle part of the rectifying column 2,18 end of high-purity fraction pipe is provided with condenser
6,6 lower part of condenser is provided with acetonitrile of high purity tank 19.
For 1 top front-end volatiles pipeline 4 of lightness-removing column for producing light component, light component a part flow to receiving tank 12, another portion
Lease making is crossed reboiler 9 and is flow in lightness-removing column 1, recycle fraction.
Acetonitrile feed pipe 14 is connected with bottom liquid outlet 5, and the material that lightness-removing column 1 is discharged by mateiral pump 13 is defeated as raw material
It is sent in rectifying column 2.
Intermediate pump 8 select IJ80-50-200, can equilibrium reflux pressure inside the tank, control the flow of reflux.
The utility model is in front of rectifying column 2 plus a lightness-removing column 1 is taking off gently first by feedstock transportation to lightness-removing column 1
Light component is adopted at the top of tower 1, after return tank 7, a part is being flow back into lightness-removing column 1 light component of extraction, completes circulation, warp
After crossing repeatedly circulation extraction light component, the bottom storage of lightness-removing column 1 has acetonitrile material, and acetonitrile material reaches essence by mateiral pump 13
It evaporates in tower 2, using the rectifying of rectifying column 2, the acetonitrile of low-purity is produced at the top of rectifying column 2, is collected after condensation, in tower
Middle part produces acetonitrile of high purity, residual kettle is discharged in 2 bottom of rectifying column, relative to traditional intermittent acetonitrile rectifying, this mode is first
The extraction that light component is first completed in lightness-removing column 1 reduces the impurity of acetonitrile product, and the light component that top produces is followed
Ring rectifying keeps the purity of acetonitrile product higher, economizes on resources；The utility model has a kind of using simple, refining effect is good, energy
Low advantage is expended in source.
Claims (4)
1. a kind of acetonitrile rectifying column, it includes rectifying column and lightness-removing column, it is characterised in that: the lightness-removing column top evaporates before being provided with
Subtube is connected with condenser on the front-end volatiles pipeline, and the condenser is connected with return tank, the reflux pot bottom
It is connected with intermediate pump, the intermediate pump other end connection reboiler and light component produce mouth, and the reboiler other end is connected to
On lightness-removing column, light component extraction mouth lower part is provided with receiving tank, and the lightness-removing column side is provided with feed inlet, described de- light
Tower bottom is provided with the outlet of bottom liquid, and mateiral pump is provided in the bottom liquid outlet, and the mateiral pump other end is acetonitrile feed pipe,
The acetonitrile feed pipe is arranged on rectifying column, is provided with low-purity fraction pipe, the low-purity fraction at the top of the rectifying column
Pipe end is connected with condenser, and the condenser is provided with low-purity acetonitrile tank, and the rectifier bottoms are provided with residual kettle
Outlet, the residual kettle, which exports, is provided with mateiral pump, is provided with high-purity fraction pipe in the middle part of the rectifying column, the high-purity evaporates
It is in charge of end and is provided with condenser, the condenser is provided with acetonitrile of high purity tank.
2. acetonitrile rectifying column according to claim 1, it is characterised in that: front-end volatiles pipeline is for adopting at the top of the lightness-removing column
Light component out, light component a part flow to receiving tank, and another part is flow in lightness-removing column by reboiler, recycle fraction.
3. acetonitrile rectifying column according to claim 1, it is characterised in that: the acetonitrile feed pipe is connected with the outlet of bottom liquid,
The material that lightness-removing column is discharged by mateiral pump is as in feedstock transportation to rectifying column.
4. acetonitrile rectifying column according to claim 1, it is characterised in that: the intermediate pump selects IJ80-50-200, can
Equilibrium reflux pressure inside the tank controls the flow of reflux.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920242184.0U CN209714332U (en) | 2019-02-26 | 2019-02-26 | A kind of acetonitrile rectifying column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920242184.0U CN209714332U (en) | 2019-02-26 | 2019-02-26 | A kind of acetonitrile rectifying column |
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| Publication Number | Publication Date |
|---|---|
| CN209714332U true CN209714332U (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920242184.0U Active CN209714332U (en) | 2019-02-26 | 2019-02-26 | A kind of acetonitrile rectifying column |
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| Country | Link |
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| CN (1) | CN209714332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112774239A (en) * | 2020-12-14 | 2021-05-11 | 河南久圣化工有限公司 | High boiling point solvent rectification system that two side lines were extracted |
-
2019
- 2019-02-26 CN CN201920242184.0U patent/CN209714332U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112774239A (en) * | 2020-12-14 | 2021-05-11 | 河南久圣化工有限公司 | High boiling point solvent rectification system that two side lines were extracted |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240508 Address after: 453000 east section of Qinglong Road, Xinxiang Economic Development Zone, Henan Province Patentee after: XINXIANG RUICHENG TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 453000 east section of Qinglong Road, Xinxiang Economic Development Zone, Hongqi District, Xinxiang City, Henan Province Patentee before: Xinxiang Ruinuo Pharmaceutical Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |