CN204352584U - With the device that chlorination 1-(2-chloroethyl)-3-methylimidazole is extractant tert-butyl alcohol from water - Google Patents
With the device that chlorination 1-(2-chloroethyl)-3-methylimidazole is extractant tert-butyl alcohol from water Download PDFInfo
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- CN204352584U CN204352584U CN201420704136.6U CN201420704136U CN204352584U CN 204352584 U CN204352584 U CN 204352584U CN 201420704136 U CN201420704136 U CN 201420704136U CN 204352584 U CN204352584 U CN 204352584U
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- chloroethyl
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Abstract
With the device that chlorination 1-(2-chloroethyl)-3-methylimidazole is extractant tert-butyl alcohol from water, relate to a kind of device of tert-butyl alcohol from water, comprise raw material storage tank, rectifying column and extractant recycling can; Extractive distillation column is atmospheric tower, and design temperature is more than 157 DEG C; Rectifying column has 25 pieces of theoretical plates, and tower top extractant entrance is located on second piece of theoretical plate; Feed(raw material)inlet is located on the 10th piece of theoretical plate; Tower reactor outlet is connected with extractant recycling can; Extractant recycling can is decompression distillation tank, and design temperature and pressure are respectively 185 DEG C, vacuum 0.08MPa.The utility model has better separating effect, can obtain highly purified t-butanol solution; Use the ionic liquid of this low volatility to do the problem of environmental pollution caused when extractant can avoid OOS to volatilize simultaneously; And be separated at extractant, the aspects such as reuse also have clear superiority.
Description
Technical field
The present invention relates to a kind of device of tert-butyl alcohol from water, particularly relate to the device that one take chlorination 1-(2-chloroethyl)-3-methylimidazole as extractant tert-butyl alcohol from water.
Background technology
The tert-butyl alcohol is important organic chemicals.Normal replacement n-butanol is as coating and medical solvent; As fuel additive for internal combustion engines (preventing carburetor) and anti-knock agent; As the intermediate of organic synthesis and the raw material for alkylation of production tert-butylation compound, methyl methacrylate, tert-butyl phenol, tert-butylamine etc. can be produced, for the synthesis of medicine, spices; Tert-butyl alcohol dehydration can produce the isobutene of purity 99.0-99.9%; As the solvent of industrial detergent, the solvent of medicine extractant, pesticide, wax solvent, cellulose esters, plastics and paint, also for the manufacture of denatured alcohol, spices, fruit essence, isobutene etc.In the production process of the tert-butyl alcohol, the azeotropic mixture of the tert-butyl alcohol and water can be produced, therefore cannot obtain the highly purified tert-butyl alcohol by commonsense method.Extracting rectifying to material liquid, adds three components (being called extractant or solvent) from tower top, the special extract rectification method of separation requirement is reached with the relative volatility changed between original component, it requires the boiling point of extractant much higher compared with the boiling point of component each in material liquid, and do not form azeotropic liquid with component, easily reclaim.The key technology of extracting rectifying is the selection of extractant, and traditional consumption of organic solvent is large, energy consumption is high.In this case, the vapour pressure ignored of ionic liquid, the defect of advantage can the make up organic solvent such as chemical stability is high, boiling point is high, can be recycled.Ionic liquid, according to the difference of its zwitterion functional group, has more than one hundred million kinds in theory.Ionic liquid chlorination 1-(2-chloroethyl)-3-methylimidazole is a kind of ionic liquid of high-hydrophilic, in theory when itself and material quality are than the azeotropic can eliminated completely when being 0.13 between the tert-butyl alcohol and water; Chlorination 1-(2-chloroethyl)-3-methylimidazole in liquid condition, can process by general fluid in course of conveying under separation temperature; Chlorination 1-(2-chloroethyl)-3-methylimidazole decomposition temperature is more than 300 DEG C, almost completely non-volatile, therefore reclaims by decompression distillation, avoids using recovery tower.
Summary of the invention
The object of the present invention is to provide a kind of take chlorination 1-(2-chloroethyl)-3-methylimidazole as the device of extractant tert-butyl alcohol from water, ionic liquid chlorination 1-(2-chloroethyl)-3-methylimidazole is adopted to carry out extracting rectifying operation as extractant, than using common organic extractant to have better separating effect, highly purified t-butanol solution can be obtained; Use the ionic liquid of this low volatility to do the problem of environmental pollution caused when extractant can avoid OOS to volatilize simultaneously; And be separated at extractant, the aspects such as reuse also have clear superiority.
The object of the invention is to be achieved through the following technical solutions:
With the device that chlorination 1-(2-chloroethyl)-3-methylimidazole is extractant tert-butyl alcohol from water, described device comprises raw material storage tank, rectifying column and extractant recycling can; Extractive distillation column is atmospheric tower, and design temperature is more than 157 DEG C; Rectifying column has 25 pieces of theoretical plates, and tower top extractant entrance is located on second piece of theoretical plate; Feed(raw material)inlet is located on the 10th piece of theoretical plate; Tower reactor outlet is connected with extractant recycling can; Extractant recycling can is decompression distillation tank, and design temperature and pressure are respectively 185 DEG C, vacuum 0.08MPa.
The device of described with chlorination 1-(2-chloroethyl)-3-methylimidazole is extractant tert-butyl alcohol from water, described device is provided with the passage that ionic liquid chlorination 1-(2-chloroethyl)-3-methylimidazole can be made to recycle between rectifying column and extractant recycling can.
Advantage of the present invention and effect are:
The present invention adopts ionic liquid chlorination 1-(2-chloroethyl)-3-methylimidazole to carry out extracting rectifying operation as extractant, has better separating effect, can obtain highly purified t-butanol solution than the common organic extractant of use; Use the ionic liquid of this low volatility to do the problem of environmental pollution caused when extractant can avoid OOS to volatilize simultaneously; And be separated at extractant, the aspects such as reuse also have clear superiority.
Accompanying drawing explanation
Fig. 1 is device and the flow process signal of the inventive method employing.
Detailed description of the invention
Below in conjunction with accompanying drawing illustrated embodiment, the invention will be further described.
In figure: in figure: raw material storage tank 1, raw material storage tank pump 2, extractive distillation column heat exchanger 3, heat exchanger 4, extractive distillation column 5, tower reactor heater 6, return tank pump 7, return tank 8, overhead condenser 9, decompression distillation tank 10, centrifugal pump 11.
Embodiment 1: extracting rectifying flow process as shown in Figure 1.Extractive distillation column has 25 pieces of theoretical plates, extractant chlorination 1-(2-chloroethyl)-3-methylimidazole enters from the 2nd piece of theoretical plate, and flow is 10kg/h, and the tert-butyl alcohol and water enter from the 10th piece of theoretical plate, consist of tert-butyl alcohol 88wt%, water 12 wt%, flow is 90kg/h, extractive distillation column atmospheric operation, reflux ratio 2, extracting rectifying tower top temperature is 81.4 DEG C, and bottom temperature is 133 DEG C, and tower top can obtain the tert-butyl alcohol that mass fraction is 96.1%.Extractive distillation column tower bottom product water and chlorination 1-(2-chloroethyl)-3-methylimidazole mixture enter solvent recovery tank decompression distillation, vapo(u)rizing temperature is 170 DEG C, vacuum 0.08MPa, obtain pure chlorination 1-(2-chloroethyl)-3-methylimidazole at the bottom of tank, capable of circulation time extractive distillation column is reused.
Embodiment 2: extracting rectifying flow process as shown in Figure 1.Extractive distillation column has 25 pieces of theoretical plates, extractant chlorination 1-(2-chloroethyl)-3-methylimidazole enters from the 2nd piece of theoretical plate, and flow is 20kg/h, and the tert-butyl alcohol and water enter from the 10th piece of theoretical plate, consist of tert-butyl alcohol 88wt%, water 12 wt%, flow is 80kg/h, extractive distillation column atmospheric operation, reflux ratio 2, extracting rectifying tower top temperature is 82.2 DEG C, and bottom temperature is 137 DEG C, and tower top can obtain the tert-butyl alcohol that mass fraction is 99.0%.
Extractive distillation column tower bottom product water and chlorination 1-(2-chloroethyl)-3-methylimidazole mixture enter solvent recovery tank decompression distillation, vapo(u)rizing temperature is 170 DEG C, vacuum 0.08MPa, obtains pure chlorination 1-(2-chloroethyl)-3-methylimidazole stream and loops back extractive distillation column and reuse at the bottom of tank.
Embodiment 3: extracting rectifying flow process as shown in Figure 1.Extractive distillation column has 25 pieces of theoretical plates, extractant chlorination 1-(2-chloroethyl)-3-methylimidazole enters from the 2nd piece of theoretical plate, and flow is 40kg/h, and the tert-butyl alcohol and water enter from the 10th piece of theoretical plate, consist of tert-butyl alcohol 88wt%, water 12 wt%, flow is 60kg/h, extractive distillation column atmospheric operation, reflux ratio 2, extracting rectifying tower top temperature is 82.7 DEG C, and bottom temperature is 142 DEG C, and tower top can obtain the tert-butyl alcohol that mass fraction is 99.7%.
Extractive distillation column tower bottom product water and chlorination 1-(2-chloroethyl)-3-methylimidazole mixture enter solvent recovery tank decompression distillation, vapo(u)rizing temperature is 170 DEG C, vacuum 0.08MPa, obtains pure chlorination 1-(2-chloroethyl)-3-methylimidazole stream and loops back extractive distillation column and reuse at the bottom of tank.
Claims (2)
1. be the device of extractant tert-butyl alcohol from water with chlorination 1-(2-chloroethyl)-3-methylimidazole, it is characterized in that, described device comprises raw material storage tank, rectifying column and extractant recycling can; Extractive distillation column is atmospheric tower, and design temperature is more than 157 DEG C; Rectifying column has 25 pieces of theoretical plates, and tower top extractant entrance is located on second piece of theoretical plate; Feed(raw material)inlet is located on the 10th piece of theoretical plate; Tower reactor outlet is connected with extractant recycling can; Extractant recycling can is decompression distillation tank, and design temperature and pressure are respectively 185 DEG C, vacuum 0.08MPa.
2. according to claim 1 take chlorination 1-(2-chloroethyl)-3-methylimidazole as the device of extractant tert-butyl alcohol from water, it is characterized in that, described device is provided with the passage that ionic liquid chlorination 1-(2-chloroethyl)-3-methylimidazole can be made to recycle between rectifying column and extractant recycling can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420704136.6U CN204352584U (en) | 2014-11-21 | 2014-11-21 | With the device that chlorination 1-(2-chloroethyl)-3-methylimidazole is extractant tert-butyl alcohol from water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420704136.6U CN204352584U (en) | 2014-11-21 | 2014-11-21 | With the device that chlorination 1-(2-chloroethyl)-3-methylimidazole is extractant tert-butyl alcohol from water |
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| CN204352584U true CN204352584U (en) | 2015-05-27 |
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| CN201420704136.6U Expired - Fee Related CN204352584U (en) | 2014-11-21 | 2014-11-21 | With the device that chlorination 1-(2-chloroethyl)-3-methylimidazole is extractant tert-butyl alcohol from water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383711A (en) * | 2014-11-21 | 2015-03-04 | 沈阳化工大学 | Device and method for separating tert-butanol from water by taking 1-(2-chloroethyl)-3-methylimidazole chloride as extraction agent |
| CN110028388A (en) * | 2019-05-23 | 2019-07-19 | 山东科技大学 | A method of with hydrophilic ionic-liquid separation of extractive distillation tetrafluoropropanol and water azeotropic mixture |
-
2014
- 2014-11-21 CN CN201420704136.6U patent/CN204352584U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383711A (en) * | 2014-11-21 | 2015-03-04 | 沈阳化工大学 | Device and method for separating tert-butanol from water by taking 1-(2-chloroethyl)-3-methylimidazole chloride as extraction agent |
| CN104383711B (en) * | 2014-11-21 | 2016-08-24 | 沈阳化工大学 | It is the devices and methods therefor of extractant tert-butyl alcohol from water with chlorination 1-(2-chloroethyl)-3-methylimidazole |
| CN110028388A (en) * | 2019-05-23 | 2019-07-19 | 山东科技大学 | A method of with hydrophilic ionic-liquid separation of extractive distillation tetrafluoropropanol and water azeotropic mixture |
| CN110028388B (en) * | 2019-05-23 | 2023-01-17 | 山东科技大学 | Method for separating tetrafluoropropanol and water azeotrope by using hydrophilic ionic liquid extraction and rectification |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20161121 |