CN1583987A - Pretreating process for fatty acid - Google Patents
Pretreating process for fatty acid Download PDFInfo
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- CN1583987A CN1583987A CN 03135619 CN03135619A CN1583987A CN 1583987 A CN1583987 A CN 1583987A CN 03135619 CN03135619 CN 03135619 CN 03135619 A CN03135619 A CN 03135619A CN 1583987 A CN1583987 A CN 1583987A
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- Prior art keywords
- lipid acid
- pretreatment technology
- light fraction
- fatty acid
- resistant
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Abstract
The invention relates to the technology of grease chemistry, especially the pretreatment of coarse fatty acid. According to be existing pretreatment technology, the substance contains a host of oxygen, color element, contaminant, sulfide and phosphide and the efficiency of separating the light fraction is too low to affect the separation of fraction tower and reduce the using age of the filler in it. However, the invention solves all the foregoing problems and moreover the fraction equipment can run formally and steadily for three months, because of the following process: first, remove gas from fatty acid and dry it after its filtration insert untoxic and heat-resistant antioxidant agent before heating; secondly, separate the light fraction with inserting over-saturated steam.
Description
Affiliated technical field
The invention belongs to the oil chemical technology field, particularly the lipid acid pre-treating process.
Background technology
Hydrolysis reaction generates croude fatty acids.The fractionated technological principle of lipid acid is a difference of utilizing fatty acid mixt each component boiling point, through multiple energy exchange and exchange of substance, separates obtaining various fatty acid monomer products under high vacuum condition.Need before croude fatty acids enters fractionation through pretreatment technology, existing pretreatment technology exists handles back material oxygen level height, pigment, impurity, and sulphur phosphide residual quantity height, lighting end is from the low shortcoming of effect.This must have influence on fractionated separation, can reduce the filler work-ing life of separation column.The steady running of existing lipid acid fractionating system was generally one month with the phase.
Summary of the invention
The object of the present invention is to provide and a kind ofly can reduce oxygen level in the material, pigment, impurity, sulphur phosphide residual quantity, a kind of lipid acid pretreatment technology that the fractionating system stable operation cycle is prolonged.
The solution of the present invention is: a kind of lipid acid pretreatment technology is characterized in that production technique realizes according to the following steps:
A, croude fatty acids outgas dry after secondary filter;
Add nontoxic, resistant to elevated temperatures oxidation inhibitor in b, the lipid acid, added quantity of antioxidant is 0.2 ‰-0.4 ‰;
C, lipid acid after heating, carry out lighting end from, lighting end from the time feed supersaturated vapor, supersaturated vapor pressure is 0.3-0.35Mpa.
Secondary filter of the present invention can be a filtration medium with ultra-fine polymeric membrane, and filtering accuracy reaches 0.1 μ m, can effectively remove the solid impurity and the greasy filth of sulfur-bearing phosphide.Lighting end from the time, by feeding supersaturated vapor at the bottom of the tower, utilize the supersaturated vapor water content few, the characteristics that pressure is high form the zone that pressure reduction is big, can effectively remove pigment.Add oxidation inhibitor before heating, the thermooxidizing in the time of can preventing the lipid acid fractionation is decomposed, thereby reduces oxygen level in the material.
The present invention is by secondary filter, add nontoxic, high temperature resistant oxidation inhibitor, and in fractionation, feed supersaturated vapor, thereby in the lipid acid preprocessing process, can effectively remove pigment, impurity, sulphur phosphide residue, reduce the material oxygen level, improve lipid acid fractionating system stable operation cycle, but make lipid acid production equipment continous-stable move nearly three months.
Embodiment
The present invention can further specify by embodiment
Embodiment 1
The shepherd's purse acid content is 43% rapeseed oil, and croude fatty acids enters degassing drying through behind the ultra-fine polymeric membrane filter element filtering after the hydrolysis, and the dry vacuum condition that outgases is 2000pa; Add oxidation inhibitor then, oxidation inhibitor is Yoshinox BHT (BHT), and consumption is 0.4 ‰ of a vegetable seed oil mass; Through being heated to 220 ℃, enter light fraction then and separate, feeding pressure at the bottom of the knockout tower when light fraction separates is the 0.3-0.35Mpa supersaturated vapor, it is 1000Pa that light fraction separates absolute pressure.The pretreatment technology of present embodiment is under the identical condition of other production technique, and products obtained therefrom compared with prior art situation is as follows.
| Production technique | The erucic acid yield | The pitch yield | The erucic acid color and luster | The continuous production time |
| Prior art | 38.66％ | 12.09％ | 80(APHA) | 20 days |
| The present invention | 41.29％ | 10.55％ | 60(APHA) | 85 days |
Embodiment 2
Croude fatty acids enters degassing drying through behind the ultra-fine polymeric membrane filter element filtering, and the dry absolute pressure that outgases is 2150Pa, add oxidation inhibitor then, oxidation inhibitor be tertiary butyl to two benzoic acids (TBHQ), consumption is 0.3 ‰, through being heated to 225 ℃, after enter lighting end from.Feeding pressure is the supersaturated vapor of 0.32Mpa, lighting end from absolute pressure be 1000Pa.
Claims (4)
1, a kind of pretreatment technology of lipid acid is characterized in that production technique realizes according to the following steps:
A, croude fatty acids outgas dry after secondary filter;
Add nontoxic, resistant to elevated temperatures oxidation inhibitor in b, the lipid acid, added quantity of antioxidant is 0.2 ‰-0.4 ‰;
C, lipid acid carry out light fraction and separate after heating, feed supersaturated vapor when light fraction separates, and supersaturated vapor pressure is 0.3-0.35Mpa.
2, the pretreatment technology of lipid acid according to claim 1 is characterized in that secondary filter adopts ultra-fine polymeric membrane filter core to do filtration medium.
3,, it is characterized in that nontoxic, high temperature resistant oxidation inhibitor is Yoshinox BHT (BHT) according to the described lipid acid pretreatment technology of claim 1.2.
4, want the pretreatment technology of your 1,2 described lipid acid according to right, it is characterized in that nontoxicly, the fire-resistant oxidation resistant agent is tertiarybutylhydroquinone (TBHQ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03135619 CN1583987A (en) | 2003-08-19 | 2003-08-19 | Pretreating process for fatty acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03135619 CN1583987A (en) | 2003-08-19 | 2003-08-19 | Pretreating process for fatty acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1583987A true CN1583987A (en) | 2005-02-23 |
Family
ID=34597174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03135619 Pending CN1583987A (en) | 2003-08-19 | 2003-08-19 | Pretreating process for fatty acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1583987A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101646644A (en) * | 2007-07-30 | 2010-02-10 | Hrd有限公司 | Produce the system and the processing method of lipid acid and wax alternatives from triglyceride level |
| CN108085134A (en) * | 2017-12-28 | 2018-05-29 | 江苏隆力奇生物科技股份有限公司 | A kind of refined snake oil and preparation method thereof, purposes |
-
2003
- 2003-08-19 CN CN 03135619 patent/CN1583987A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101646644A (en) * | 2007-07-30 | 2010-02-10 | Hrd有限公司 | Produce the system and the processing method of lipid acid and wax alternatives from triglyceride level |
| US8491856B2 (en) | 2007-07-30 | 2013-07-23 | H R D Corporation | System and process for production of fatty acids and wax alternatives from triglycerides |
| CN108085134A (en) * | 2017-12-28 | 2018-05-29 | 江苏隆力奇生物科技股份有限公司 | A kind of refined snake oil and preparation method thereof, purposes |
| CN108085134B (en) * | 2017-12-28 | 2021-04-02 | 苏州克劳丽化妆品有限公司 | Refined snake oil and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |