CN105585427A - Method for preparing high-purity ethyl alcohol - Google Patents
Method for preparing high-purity ethyl alcohol Download PDFInfo
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- CN105585427A CN105585427A CN201410560540.5A CN201410560540A CN105585427A CN 105585427 A CN105585427 A CN 105585427A CN 201410560540 A CN201410560540 A CN 201410560540A CN 105585427 A CN105585427 A CN 105585427A
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- ethanol
- sulfuric acid
- concentrated sulfuric
- high purity
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Abstract
The invention relates to a method for preparing high-purity ethyl alcohol. According to the method, common ethyl alcohol is taken as a raw material, and steps of distillation and dehydration by concentrated sulfuric acid are carried out to obtain the product. The distillation step is carried out by employing a water-bath heating mode, the distillation temperature is 75-95 DEG C; the dehydration by the concentrated sulfuric acid is characterized in that ethyl alcohol and concentrated sulfuric acid with equal volume are injected to a distiller together, distillation is carried out by a water-bath heating mode, and the distillation temperature is 80-100 DEG C. The method has the advantages of simple process, less investment, and low cost, and the product has the characteristics of high purity and high quality.
Description
Technical field
The present invention relates to a kind of preparation method of chemical products, be specifically related to a kind of high purity ethanol preparation method.
Background technology
Ethanol is a kind of well solvent, can dissolve many inorganic matters, can dissolve again many organic matters, so conventional ethanol dissolves phytochrome or medicinal ingredient wherein; Also conventional ethanol, as the solvent of reaction, all can dissolve organic matter and the inorganic matter of participating in reaction, and enlarge active surface, improves reaction rate. Also available ethanol is manufactured acetic acid, beverage, essence, dyestuff, fuel, in national defense industry, health care, organic synthesis, food industry, industrial and agricultural production, all has been widely used. Tradition ethanol is put forward highly purified method calcium oxide evaporation, sodium metal evaporation etc.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, and a kind of new high high purity ethanol preparation method of the product purity making is provided.
Technical problem to be solved by this invention is to realize by following technical scheme. The present invention is a kind of high purity ethanol preparation method, is characterized in: raw materials used is common process ethanol, forms through distillation, concentrated sulfuric acid dehydration; Described distillation is to adopt the mode of heating water bath to distill, and vapo(u)rizing temperature is 75-95 DEG C; Described concentrated sulfuric acid dehydration is that ethanol is injected to distiller together with isopyknic concentrated sulfuric acid, adopts the mode of heating water bath to distill, and vapo(u)rizing temperature is 80-100 DEG C.
High purity ethanol preparation method of the present invention, further: in still-process, vapo(u)rizing temperature is 85 DEG C.
High purity ethanol preparation method of the present invention, further: in concentrated sulfuric acid dehydration, vapo(u)rizing temperature is 90 DEG C.
High purity ethanol preparation method of the present invention, further: in concentrated sulfuric acid dehydration, the mass concentration of the concentrated sulfuric acid is 98%.
High purity ethanol preparation method of the present invention, further: when operation, general industry ethanol is put into the distiller with condensing unit, adopt the mode of heating water bath to distill, the ethanol liquid flowing out in condenser pipe is collected. The ethanol making in previous step is refilled in distiller, and add the concentrated sulfuric acid, and continue to adopt the mode of heating water bath to distill, the ethanol liquid flowing out in condenser pipe is collected, in the time that the liquid flowing out significantly reduces suddenly, can stop distillation from condenser pipe. The purity of alcohol now distilling out can reach more than 99%.
Compared with prior art, the method for purifying ethanol of the present invention, not only technique is simple, small investment, and also cost is lower, and obtained product can reach the feature of high-purity high-quality.
Detailed description of the invention
Below further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
Embodiment 1, a kind of preparation method of high purity ethanol, raw materials used is common process ethanol, forms through distillation, concentrated sulfuric acid dehydration; Described distillation is to adopt the mode of heating water bath to distill, and vapo(u)rizing temperature is 75-95 DEG C; Described concentrated sulfuric acid dehydration is that ethanol is injected to distiller together with isopyknic concentrated sulfuric acid, adopts the mode of heating water bath to distill, and vapo(u)rizing temperature is 80-100 DEG C.
Embodiment 2, in the high purity ethanol preparation method described in embodiment 1: in still-process, vapo(u)rizing temperature is 85 DEG C.
Embodiment 3, in the high purity ethanol preparation method described in embodiment 1 or 2: in concentrated sulfuric acid dehydration, vapo(u)rizing temperature is 90 DEG C.
Embodiment 4, in the high purity ethanol preparation method of embodiment 1-3 described in any one: in concentrated sulfuric acid dehydration, the mass concentration of the concentrated sulfuric acid is 98%.
Embodiment 5, in the high purity ethanol preparation method of embodiment 1-4 described in any one: when operation, general industry ethanol is put into the distiller with condensing unit, adopt the mode of heating water bath to distill, the ethanol liquid flowing out in condenser pipe is collected. The ethanol making in previous step is refilled in distiller, and add the concentrated sulfuric acid, and continue to adopt the mode of heating water bath to distill, the ethanol liquid flowing out in condenser pipe is collected, in the time that the liquid flowing out significantly reduces suddenly, can stop distillation from condenser pipe. The purity of alcohol now distilling out can reach more than 99%.
Embodiment 6, high purity ethanol preparation method experiment: the industrial alcohol of 10 kilogram 78% is put into the distiller with condensing unit, airtight good distiller opening rapidly, adopt the mode of heating water bath to distill, slowly water temperature is increased to 80 DEG C, the ethanol liquid flowing out in condenser pipe is collected. In the time that the liquid flowing out significantly reduces suddenly, can stop distillation from condenser pipe. The purity of alcohol now distilling out can reach more than 97%.
The ethanol making in previous step is refilled in distiller, and add isopyknic concentrated sulfuric acid, airtight good distiller opening rapidly, continue to adopt the mode of heating water bath to distill, slowly water temperature is increased to 90 DEG C, the ethanol liquid flowing out in condenser pipe is collected, in the time that the liquid flowing out significantly reduces suddenly, can stop distillation from condenser pipe. The purity of alcohol now distilling out can reach more than 99%.
Claims (5)
1. a preparation method for high purity ethanol, is characterized in that: raw materials used is common process ethanol, forms through distillation, concentrated sulfuric acid dehydration; Described distillation is to adopt the mode of heating water bath to distill, and vapo(u)rizing temperature is 75-95 DEG C; Described concentrated sulfuric acid dehydration is that ethanol is injected to distiller together with isopyknic concentrated sulfuric acid, adopts the mode of heating water bath to distill, and vapo(u)rizing temperature is 80-100 DEG C.
2. high purity ethanol preparation method according to claim 1, is characterized in that: in still-process, vapo(u)rizing temperature is 85 DEG C.
3. the preparation method of high purity ethanol according to claim 1, is characterized in that: in concentrated sulfuric acid dehydration, vapo(u)rizing temperature is 90 DEG C.
4. the preparation method of high purity ethanol according to claim 1, is characterized in that: in concentrated sulfuric acid dehydration, the mass concentration of the concentrated sulfuric acid is 98%.
5. the preparation method of high purity ethanol according to claim 1, it is characterized in that: when operation, general industry ethanol is put into the distiller with condensing unit, adopt the mode of heating water bath to distill, the ethanol liquid flowing out in condenser pipe is collected, the ethanol making in previous step is refilled in distiller, and add the concentrated sulfuric acid, continue to adopt the mode of heating water bath to distill, the ethanol liquid flowing out in condenser pipe is collected, in the time that the liquid flowing out from condenser pipe significantly reduces suddenly, can stop distillation, the purity of alcohol now distilling out can reach more than 99%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560540.5A CN105585427A (en) | 2014-10-21 | 2014-10-21 | Method for preparing high-purity ethyl alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560540.5A CN105585427A (en) | 2014-10-21 | 2014-10-21 | Method for preparing high-purity ethyl alcohol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105585427A true CN105585427A (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410560540.5A Pending CN105585427A (en) | 2014-10-21 | 2014-10-21 | Method for preparing high-purity ethyl alcohol |
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| CN (1) | CN105585427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108498662A (en) * | 2017-12-22 | 2018-09-07 | 王修丽 | A kind of Orthopaedic nursing cleaning Chinese medicine |
-
2014
- 2014-10-21 CN CN201410560540.5A patent/CN105585427A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108498662A (en) * | 2017-12-22 | 2018-09-07 | 王修丽 | A kind of Orthopaedic nursing cleaning Chinese medicine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160518 |
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| WD01 | Invention patent application deemed withdrawn after publication |