CN101260024A - Method for extracting aliphatic alcohol from front-end volatiles of natural aliphatic alcohol - Google Patents
Method for extracting aliphatic alcohol from front-end volatiles of natural aliphatic alcohol Download PDFInfo
- Publication number
- CN101260024A CN101260024A CNA2008100275102A CN200810027510A CN101260024A CN 101260024 A CN101260024 A CN 101260024A CN A2008100275102 A CNA2008100275102 A CN A2008100275102A CN 200810027510 A CN200810027510 A CN 200810027510A CN 101260024 A CN101260024 A CN 101260024A
- Authority
- CN
- China
- Prior art keywords
- fatty alcohol
- solid acid
- foreshot
- natural
- extracting
- 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
Links
Landscapes
- Fats And Perfumes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a method of extracting fatty alcohol from front-end volatiles of natural fatty alcohol. The front-end volatiles of natural fatty alcohol are used as raw material, and fatty alcohol is extracted orderly via the workshop sections of esterification, dewaxing, hydrolysis, separation dehydration and fractionation, wherein the esterification is to add solid acid to the front-end volatiles of natural fatty alcohol, and solid acid reacts with fatty alcohol to form solid acid ester and water; dewaxing is to utilize the boiling point difference between acid ester and alkane to carry out evaporation separation to products obtained in esterification. The invention utilizes the unique chemical properties of the fatty alcohol in the front-end volatiles of natural fatty alcohol to have fatty alcohol react with solid acid, so as to improve boiling point, increase the boiling point gap between fatty alcohol and other distillate, carry out reduced pressure distillation and remove impurities. Therefore, the method greatly improves the yield coefficient of fatty alcohol, ensures that the content of fatty alcohol reaches over 99 percent, recovers and recycles waste, reduces environmental pollution, and can produce high economic value at the same time.
Description
Technical field
The present invention relates to the production technique of fine chemistry industry, particularly a kind of processing method of from the foreshot of natural fatty alcohol, extracting Fatty Alcohol(C12-C14 and C12-C18).
Background technology
Fatty Alcohol(C12-C14 and C12-C18) is the important intermediate of various chemical, household supplies etc., for example is used for essence, washing composition etc., and the demand in market increases year by year in recent years.Fatty Alcohol(C12-C14 and C12-C18) is a raw material with natural fats and oils, lipid acid, fatty acid ester usually, in the presence of hydrogenation catalyst, utilize hydrogen to implement catalytic reduction and obtain rough Fatty Alcohol(C12-C14 and C12-C18), and then distillation is refining, by making Fatty Alcohol(C12-C14 and C12-C18).The distillation residue that above-mentioned distillation process produces go out of use usually, have not only wasted the useful raw material of part, have reduced the efficient of producing Fatty Alcohol(C12-C14 and C12-C18), and environment is also caused in various degree pollution.
Summary of the invention
At the deficiency of above existing Fatty Alcohol(C12-C14 and C12-C18) production technique, the purpose of this invention is to provide a kind of processing method of from the foreshot of natural fatty alcohol, extracting Fatty Alcohol(C12-C14 and C12-C18).
The objective of the invention is by realizing by the following technical solutions:
Extracting the method for Fatty Alcohol(C12-C14 and C12-C18) from the foreshot of natural fatty alcohol, is starting raw material with the foreshot of natural fatty alcohol, extracts Fatty Alcohol(C12-C14 and C12-C18) through following step successively, and this method comprises:
(1) esterification: solid acid is added in the foreshot of natural fatty alcohol, solid acid and Fatty Alcohol(C12-C14 and C12-C18) reaction generate solid acid esters and water.
(2) dewaxing:, utilize solid acid esters and boiling-point difference between the alkane to evaporate and separate with the product of step (1) gained.
(3) hydrolysis, separating and dehydrating: the product of step (2) gained is hydrolyzed under normal pressure, after hydrolysis is finished, utilizes the characteristic of Fatty Alcohol(C12-C14 and C12-C18) and water, solid acid, make their AUTOMATIC ZONING, the upper strata is a Fatty Alcohol(C12-C14 and C12-C18), and lower floor is a solid acid solution, and the Fatty Alcohol(C12-C14 and C12-C18) on upper strata is carried out vacuum hydro-extraction.
(4) fractionation: with the Fatty Alcohol(C12-C14 and C12-C18) of step (3) gained, utilize the different characteristic of itself carbochain different boiling, adopt fractionation process, the Fatty Alcohol(C12-C14 and C12-C18) of different boiling is separated.
As the preferred technical solution of the present invention, described step (1) is carried out under negative pressure, and temperature is controlled at 80 ℃ to 120 ℃, and will react the water that generates and in time extract out, to improve the transformation efficiency of reaction.
As the preferred technical solution of the present invention, the vaporization temperature of described step (2) is controlled at 180 ℃ to 250 ℃, pressure-controlling at-5kpa to-10kpa.
As the preferred technical solution of the present invention, the hydrolysis of described step (3) and isolating temperature are controlled at 90 ℃, and the temperature in water smoking is 120 ℃, and pressure is-50kpa.
As the preferred technical solution of the present invention, the temperature of described step (4) separation phase is controlled at 120 ℃ to 200 ℃, and pressure is-6kpa.
As the preferred technical solution of the present invention, the negative pressure of described step (1) is controlled at-and 25kpa is to-80kpa.
The invention has the beneficial effects as follows:
The present invention utilizes the peculiar chemical property of Fatty Alcohol(C12-C14 and C12-C18) in the natural fatty alcohol foreshot, and itself and solid acid are reacted, and improves boiling point, the boiling-point difference distance of increase and other fraction is carried out underpressure distillation again, removes impurity, this technology has greatly improved the yield of Fatty Alcohol(C12-C14 and C12-C18), and Fatty Alcohol(C12-C14 and C12-C18) content is reached more than 99%.The present invention not only reclaims, recycle waste, reduced environmental pollution, simultaneously can produce higher economic value.
Embodiment
Extracting the method for Fatty Alcohol(C12-C14 and C12-C18) from the foreshot of natural fatty alcohol, is that the foreshot with natural fatty alcohol is a starting raw material, and the composition that comprises in the foreshot of natural fatty alcohol has: C
6OH-C
14OH, degreasing fatty acid methyl esters, C
6-C
16Alkane and other impurity, successively through following step, extract Fatty Alcohol(C12-C14 and C12-C18) with starting raw material:
(1) esterification workshop section: solid acid is added in the foreshot of natural fatty alcohol, solid acid and Fatty Alcohol(C12-C14 and C12-C18) reaction generate solid acid esters and water.This workshop section carries out under negative pressure, and to-70kpa, temperature is controlled at 80 ℃ to 120 ℃ to the negative pressure pressure-controlling, in order to improve the transformation efficiency of reaction, needs in time will react the water extraction that generates at-35kpa.Boiling point after the solid acid esterification rises 100 ℃ than corresponding pure boiling point, for the dewaxing workshop section that descends the road lays the first stone.
(2) dewaxing workshop section: with the product of step (1) gained, utilize solid acid esters and boiling-point difference between the alkane to evaporate and separate, vaporization temperature is 200 ℃, pressure is-residual voltage of 10kpa under.
(3) hydrolysis, separating and dehydrating workshop section: the product of step (2) gained is hydrolyzed, this reaction is the type reaction of ester, and temperature of reaction is controlled at 90 ℃, and pressure is normal pressure, after hydrolysis is finished, utilize Fatty Alcohol(C12-C14 and C12-C18) and water, the easy stratified characteristic of solid acid, make their AUTOMATIC ZONING, the upper strata is a Fatty Alcohol(C12-C14 and C12-C18), lower floor is a solid acid solution, the Fatty Alcohol(C12-C14 and C12-C18) on upper strata is carried out vacuum hydro-extraction, and the temperature in water smoking is 120 ℃, and pressure is-50kpa.
(4) fractionation workshop section: with the Fatty Alcohol(C12-C14 and C12-C18) of step (3) gained, utilize the different characteristic of itself carbochain different boiling, adopt fractionation process, the Fatty Alcohol(C12-C14 and C12-C18) of different boiling is separated, the temperature of separation phase is controlled at 120 ℃ to 200 ℃, and pressure is-6kpa.
This technology has greatly improved the yield of Fatty Alcohol(C12-C14 and C12-C18), and Fatty Alcohol(C12-C14 and C12-C18) content is reached more than 99%.The present invention not only reclaims, recycle waste, reduced environmental pollution, simultaneously can produce higher economic value.
Claims (6)
1, extract the method for Fatty Alcohol(C12-C14 and C12-C18) from the foreshot of natural fatty alcohol, it is characterized in that: the foreshot with natural fatty alcohol is a starting raw material, extracts Fatty Alcohol(C12-C14 and C12-C18) through following step successively, and this method comprises:
(1) esterification: solid acid is added in the foreshot of natural fatty alcohol, solid acid and Fatty Alcohol(C12-C14 and C12-C18) reaction generate solid acid esters and water.
(2) dewaxing:, utilize solid acid esters and boiling-point difference between the alkane to evaporate and separate with the product of step (1) gained.
(3) hydrolysis, separating and dehydrating: the product of step (2) gained is hydrolyzed under normal pressure, after hydrolysis is finished, utilizes the characteristic of Fatty Alcohol(C12-C14 and C12-C18) and water, solid acid, make their AUTOMATIC ZONING, the upper strata is a Fatty Alcohol(C12-C14 and C12-C18), and lower floor is a solid acid solution, and the Fatty Alcohol(C12-C14 and C12-C18) on upper strata is carried out vacuum hydro-extraction.
(4) fractionation: with the Fatty Alcohol(C12-C14 and C12-C18) of step (3) gained, utilize the different characteristic of itself carbochain different boiling, adopt fractionation process, the Fatty Alcohol(C12-C14 and C12-C18) of different boiling is separated.
2, the method for from the foreshot of natural fatty alcohol, extracting Fatty Alcohol(C12-C14 and C12-C18) according to claim 1, it is characterized in that: described step (1) is carried out under negative pressure, temperature is controlled at 80 ℃ to 120 ℃, and will react the water that generates and in time extract out, to improve the transformation efficiency of reaction.
3, the method for from the foreshot of natural fatty alcohol, extracting Fatty Alcohol(C12-C14 and C12-C18) according to claim 1, it is characterized in that: the vaporization temperature of described step (2) is controlled at 180 ℃ to 250 ℃, pressure-controlling at-5kpa to-10kpa.
4, the method for from the foreshot of natural fatty alcohol, extracting Fatty Alcohol(C12-C14 and C12-C18) according to claim 1, it is characterized in that: the hydrolysis of described step (3) and isolating temperature are controlled at 90 ℃, and the temperature in water smoking is 120 ℃, and pressure is-50kpa.
5, the method for extracting Fatty Alcohol(C12-C14 and C12-C18) from the foreshot of natural fatty alcohol according to claim 1, it is characterized in that: the temperature of described step (4) separation phase is controlled at 120 ℃ to 200 ℃, and pressure is-6kpa.
6, the method for extracting Fatty Alcohol(C12-C14 and C12-C18) from the foreshot of natural fatty alcohol according to claim 2 is characterized in that: and the negative pressure of described step (1) is controlled at-and 25kpa is to-80kpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100275102A CN101260024A (en) | 2008-04-18 | 2008-04-18 | Method for extracting aliphatic alcohol from front-end volatiles of natural aliphatic alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100275102A CN101260024A (en) | 2008-04-18 | 2008-04-18 | Method for extracting aliphatic alcohol from front-end volatiles of natural aliphatic alcohol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101260024A true CN101260024A (en) | 2008-09-10 |
Family
ID=39960761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100275102A Pending CN101260024A (en) | 2008-04-18 | 2008-04-18 | Method for extracting aliphatic alcohol from front-end volatiles of natural aliphatic alcohol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101260024A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942369A (en) * | 2019-04-15 | 2019-06-28 | 山东新元素生物科技有限公司 | The method of long-chain fatty alcohol is extracted from vitamin E production residual oil |
-
2008
- 2008-04-18 CN CNA2008100275102A patent/CN101260024A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942369A (en) * | 2019-04-15 | 2019-06-28 | 山东新元素生物科技有限公司 | The method of long-chain fatty alcohol is extracted from vitamin E production residual oil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10961473B2 (en) | Process for producing biodiesel and related products | |
| CN101195572A (en) | Method for synthesizing fatty acid methyl ester | |
| SG140551A1 (en) | Production of biodiesel and glycerin from high free fatty acid feedstocks | |
| CN100376525C (en) | Method for refining glycerol being as byproduct of biology diesel oil | |
| CN101215233B (en) | Technique for producing fatty acid methyl ester | |
| JP2009513771A (en) | Automotive fuel and fine chemicals obtained from crude tall oil | |
| CN1197937C (en) | Process for producing biological diesel oil | |
| EP3026096B1 (en) | Method for preparing fatty acid alkyl ester using fat | |
| CN101939280B (en) | Method for production of fatty alcohols | |
| CN101525446B (en) | Method for refining dibasic acid dimethyl ester plasticizer | |
| US20150239811A1 (en) | Process for Producing High-Yield Biodiesel Applying High Acidity Triglycerides With Generation of Glycerin 90% Free of Salts | |
| CN101260024A (en) | Method for extracting aliphatic alcohol from front-end volatiles of natural aliphatic alcohol | |
| CN104086412A (en) | Process method for producing butyl oleate by using rape oil fatty acid | |
| CN102229858B (en) | Method for preparing biodiesel | |
| CN101260066B (en) | Method for producing fatty acid amide from cocoanut oil acidifying oil | |
| CN103804125A (en) | Method for preparing policosanol through insect wax pressure reduction method | |
| CN103224836B (en) | Pretreatment method of high impurity grease | |
| CN101550364B (en) | A method for preparing biodiesel by comprehensive utilization of high acid number oilseed | |
| Cuperus et al. | The processing of new oilseed crops—An economic evaluation | |
| US20110054201A1 (en) | Process for Producing Fatty Acid Esters and Fuels Comprising Fatty Acid Esters | |
| CN102249852B (en) | Method for producing natural fatty alcohol by using low-grade oil | |
| CN101016473B (en) | Method of producing biological fuel oil from poor oil | |
| CN103804128A (en) | Method for preparing high-grade alkanol from rice bran wax by reduction under pressure | |
| RU2324727C1 (en) | Process of obtaining mixture of higher fatty acids | |
| EP2522650B1 (en) | Process for purifying crude fatty alcohols |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080910 |