CN208907093U - A kind of purifying plant of N-Methyl pyrrolidone - Google Patents
A kind of purifying plant of N-Methyl pyrrolidone Download PDFInfo
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- CN208907093U CN208907093U CN201821527838.6U CN201821527838U CN208907093U CN 208907093 U CN208907093 U CN 208907093U CN 201821527838 U CN201821527838 U CN 201821527838U CN 208907093 U CN208907093 U CN 208907093U
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- exchange resin
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Abstract
The utility model relates to a kind of purifying plants of N-Methyl pyrrolidone, including filter, rectifying column and finished pot；Filter both ends are equipped with opening, filter inner cavity is equipped with three groups of filter layers, the filter layer is followed successively by macroporous absorbent resin, storng-acid cation exchange resin and strong-base anion-exchange resin, rectifying column includes upper cover, main body and lower head, lower head is equipped with material inlet, main body bottom end is equipped with molecular sieve support frame, support frame is equipped with and is successively arranged non-polar macroporous resin layer and charged fiber element film layer from the bottom up, main body two sides are equipped with heater, main body left upper portion is successively arranged constant-current titration device from the bottom up, pressure regulator, pressure-measuring-point and temperature point, main body top is equipped with activated carbon filter layer, upper cover center is equipped with opening, opening is equipped with condenser, finished product upper end is equipped with vacuum pump, vacuum pump neighbouring position pipeline is equipped with valve.Low energy consumption for the utility model, product purity is high, is worthy to be popularized.
Description
Technical field
The utility model relates to a kind of devices for promoting N-Methyl pyrrolidone, and in particular to a kind of N-Methyl pyrrolidone
Purifying plant.
Background technique
N- methyl pyrrolidone (NMP) is a kind of important industrial chemicals, is that a kind of selectivity is strong and stability is good
Polar solvent, has that boiling point is high, nonflammable, toxicity is low, using safe, solvability is strong, recyclable, biodegradable etc. excellent
Point.Very high to high-purity N-methyl pyrrolidone requirement, in the prior art, N-Methyl pyrrolidone purity is not high, high production cost,
Energy consumption height etc..
Utility model content
In view of this, low energy consumption it is necessary to provide a kind of production cost is low, a kind of N-Methyl pyrrolidone with high purity
Purifying plant.
A kind of purifying plant of N-Methyl pyrrolidone, including filter, rectifying column and finished pot；The filter both ends
Equipped with opening, open at one end for connecting feed conduit, the other end is equipped with three groups of mistakes for connecting discharge pipe, filter inner cavity
Filtering layer, the filter layer are followed successively by macroporous absorbent resin, storng-acid cation exchange resin and strong-base anion-exchange resin,
For removing amine, cation and anionic impurity；The rectifying column includes upper cover, main body and lower head, upper cover, main body and
Lower head is linked together by welding manner；The lower head is equipped with material inlet, and electric valve at material inlet position is described
Main body bottom end is equipped with molecular sieve support frame, and support frame is equipped with is successively arranged non-polar macroporous resin layer and electrification fibre from the bottom up
Plain film layer is tieed up, main body two sides are equipped with heater, and for adjusting the temperature in rectifying column, main body left upper portion is successively set from the bottom up
There are constant-current titration device, pressure regulator, pressure-measuring-point and a temperature point, main body top is equipped with activated carbon filter layer, in the upper cover
Heart position is equipped with opening, and opening is equipped with condenser, and condenser is bolted to upper cover aperture position, and condenser is another
One end is equipped with butterfly valve and is connected to pipeline；The finished product upper end is equipped with vacuum pump, and finished pot is bolted in vacuum pump one end
Top, other end connecting pipe, the vacuum pump neighbouring position pipeline are equipped with valve.
Further, the filter layer is followed successively by macroporous absorbent resin, storng-acid cation exchange resin and strong basicity yin
Ion exchange resin, the filter layer formed in series, the filter layer of multiple absorption, it is ensured that N-Methyl pyrrolidone
Purity.
Further, the lower head material inlet is additionally provided with meter nearby at electric valve, for meter feedstock into
Enter amount, more accurate metering energy energy saving.
Further, the constant-current titration device is used to detect the content of organic amine in rectifying column, can observe whenever and wherever possible
The content of organic amine in tower.
Compared with the existing technology, the beneficial effects of the utility model are that structure is simple, and production cost poor benefit is high, macropore
Absorption resin, storng-acid cation exchange resin and strong-base anion-exchange resin, the filter layer formed in series,
The N-Methyl pyrrolidone scale of investment of production is allowed to become smaller, purity is high.
Detailed description of the invention
Fig. 1 is the purifying plant structural schematic diagram of the N-Methyl pyrrolidone of the utility model embodiment.
Specific embodiment
The utility model is described in detail below with reference to specific embodiments and the drawings.
Referring to Fig. 1, an embodiment of the present invention is shown, a kind of purifying plant 10 of N-Methyl pyrrolidone,
Including filter 20, rectifying column 25 and finished pot 42；20 both ends of filter are equipped with opening, open at one end for connecting raw material
Pipeline, the other end are equipped with three groups of filter layers for connecting discharge pipe, 20 inner cavity of filter, and the filter layer 21 is followed successively by macropore
Adsorb resin 22, storng-acid cation exchange resin 23 and strong-base anion-exchange resin 24, for remove amine, cation and
Anionic impurity；The rectifying column 25 includes upper cover 26, main body 27 and lower head 28, upper cover 26, main body 27 and lower head
28 are linked together by welding manner；The lower head 28 is equipped with material inlet 29, electric valve 30 at 29 position of material inlet,
27 bottom end of main body is equipped with molecular sieve support frame 31, and support frame 31 is equipped with and is successively arranged non-polar macroporous resin from the bottom up
Layer 32 and charged fiber element film layer 33,27 two sides of main body are equipped with heater 34, for adjusting the temperature in rectifying column 25, main body 27
Left upper portion is successively arranged constant-current titration device 35, pressure regulator 36, pressure-measuring-point 37 and temperature point 38 from the bottom up, and main body 27 is pushed up
End is equipped with activated carbon filter layer, and 26 center of upper cover is equipped with opening 39, is equipped with condenser 40 at opening 39, condenses
Device 40 is bolted to 26 central opening of upper cover, 39 position, and 40 other end of condenser is equipped with butterfly valve 41 and is connected to pipeline；
42 top of finished pot is equipped with vacuum pump 43, and finished product upper end, other end connecting tube is bolted in 43 one end of vacuum pump
Road, the 43 neighbouring position pipeline of vacuum pump are equipped with valve 44.
Further, the filter layer 21 is followed successively by macroporous absorbent resin 22, storng-acid cation exchange resin 23 and strong
Alkalescence anion-exchange resin 24, the filter layer 21 formed in series, the filter layer of multiple absorption, it is ensured that N- first
The purity of base pyrrolidones.
Further, it is additionally provided with meter 45, for measuring at electric valve 30 near 28 material inlet 28 of lower head
The inlet of raw material, more accurate metering energy energy saving.
Further, the constant-current titration device 35 is used to detect the content of organic amine in rectifying column 25, can see whenever and wherever possible
Measure the content of the organic amine in tower.
It should be noted that the utility model is not limited to above embodiment, creation essence according to the present utility model
Mind, those skilled in the art can also make other variations, these variations done according to the creative spirit of the utility model, all
Should be included in the utility model it is claimed within the scope of.
Claims (3)
1. a kind of purifying plant of N-Methyl pyrrolidone, including filter, rectifying column and finished pot；It is characterized by: described
Filter both ends are equipped with opening, and open at one end for connecting feed conduit, the other end is for connecting discharge pipe, filter inner cavity
Equipped with three groups of filter layers, the filter layer be followed successively by macroporous absorbent resin, storng-acid cation exchange resin and strong basicity yin from
Sub-exchange resin, for removing amine, cation and anionic impurity；The rectifying column includes upper cover, main body and lower head, on
End socket, main body and lower head are linked together by welding manner；The lower head is equipped with material inlet, at material inlet position
Electric valve, the main body bottom end are equipped with molecular sieve support frame, and support frame is equipped with and is successively arranged nonpolar macroporous tree from the bottom up
Rouge layer and charged fiber element film layer, main body two sides are equipped with heater, for adjusting the temperature in rectifying column, main body left upper portion from
Under be up successively arranged constant-current titration device, pressure regulator, pressure-measuring-point and temperature point, main body top is equipped with activated carbon filter layer,
The upper cover center is equipped with opening, and opening is equipped with condenser, and condenser is bolted to upper cover opening
Position, the condenser other end are equipped with butterfly valve and are connected to pipeline；The finished product upper end is equipped with vacuum pump, and vacuum pump one end passes through spiral shell
It tethers and is connected into product upper end, other end connecting pipe, the vacuum pump neighbouring position pipeline is equipped with valve.
2. the purifying plant of N-Methyl pyrrolidone as described in claim 1, it is characterised in that: the filter layer is followed successively by greatly
Macroporous adsorbent resin, storng-acid cation exchange resin and strong-base anion-exchange resin, form filter layer in series.
3. the purifying plant of N-Methyl pyrrolidone as described in claim 1, it is characterised in that: the lower head material inlet
At neighbouring electric valve, it is additionally provided with meter, the inlet for meter feedstock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821527838.6U CN208907093U (en) | 2018-09-19 | 2018-09-19 | A kind of purifying plant of N-Methyl pyrrolidone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821527838.6U CN208907093U (en) | 2018-09-19 | 2018-09-19 | A kind of purifying plant of N-Methyl pyrrolidone |
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| Publication Number | Publication Date |
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| CN208907093U true CN208907093U (en) | 2019-05-28 |
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ID=66613683
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821527838.6U Active CN208907093U (en) | 2018-09-19 | 2018-09-19 | A kind of purifying plant of N-Methyl pyrrolidone |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639222A (en) * | 2019-09-29 | 2020-01-03 | 济宁市圣奥精细化工有限公司 | 1-aminoanthraquinone rectifying tower and method |
| CN112094216A (en) * | 2020-09-15 | 2020-12-18 | 安徽晟捷新能源科技有限公司 | High-purity N-methyl pyrrolidone purification device with adsorption function |
| CN116239514A (en) * | 2023-03-20 | 2023-06-09 | 重庆中润新材料股份有限公司 | Method for reducing free amine in NMP |
-
2018
- 2018-09-19 CN CN201821527838.6U patent/CN208907093U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639222A (en) * | 2019-09-29 | 2020-01-03 | 济宁市圣奥精细化工有限公司 | 1-aminoanthraquinone rectifying tower and method |
| CN112094216A (en) * | 2020-09-15 | 2020-12-18 | 安徽晟捷新能源科技有限公司 | High-purity N-methyl pyrrolidone purification device with adsorption function |
| CN112094216B (en) * | 2020-09-15 | 2022-07-05 | 安徽晟捷新能源科技股份有限公司 | High-purity N-methyl pyrrolidone purification device with adsorption function |
| CN116239514A (en) * | 2023-03-20 | 2023-06-09 | 重庆中润新材料股份有限公司 | Method for reducing free amine in NMP |
| CN116239514B (en) * | 2023-03-20 | 2023-11-10 | 重庆中润新材料股份有限公司 | Method for reducing free amine in NMP |
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