CN1028539C - Process for extracting castor oil by using alcohol - Google Patents
Process for extracting castor oil by using alcohol Download PDFInfo
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- CN1028539C CN1028539C CN 92101670 CN92101670A CN1028539C CN 1028539 C CN1028539 C CN 1028539C CN 92101670 CN92101670 CN 92101670 CN 92101670 A CN92101670 A CN 92101670A CN 1028539 C CN1028539 C CN 1028539C
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- viscotrol
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Abstract
Castor beans are cleaned, processed by flaking and cooked; firstly, partial castor oil is prepared by prepressing (or pressing); then the residual oil of a castor cake is extracted by alcohol (also aqueous ethanol). The moisture of the pre-pressed cake is required to be from 2 to 14%; the extraction temperature is from 50 to 90 DEG C; the proportion of the alcohol to the castor cake is from 1 to (0.6 to 1.2); the extraction time is from 60 to 120 minutes. The oil mixture is precipitated, filtrated, evaporated and separated by steam stripping; the separated alcohol is processed by condensation and rectification for cyclic usage; the pre-pressed crude oil and extracted crude oil are prepared into industrial castor oil and medicinal castor oil by precipitation, filtration, deacidification and decoloration. The residual oil content of castor meal processed by the method is lower than 1%.
Description
The invention belongs to grease, chemical technology field, be specifically related to soak the method for hitting Viscotrol C with solvent.
Viscotrol C is a kind of broad-spectrum industrial chemicals, is mainly used in manufacturing synthetic resins, coating, lubricating oil and softening agent etc., and the auxiliary material of medicine, printing and dyeing and tanning industry.
Existing Viscotrol C working method has following several: a kind of be with castor seeds after cleaning, adopt whole seed cold press to get oil, general cold press secondary is obtained sesame oil quality height with this legal system, weak point is that oil yield is low.Another kind be with castor seeds through pre-treatment, then to produce a part of Viscotrol C earlier with pre-squeezer under higher temperature and the lower moisture condition, use No. 6 solvents (normal hexane) to leach Viscotrol C in the Semen Ricini cake then.Because Viscotrol C is rich in ricinoleic acid (content is 82～88%), makes the specific inductivity of Viscotrol C bigger, promptly polarity is bigger.And the specific inductivity of No. 6 solvents is less, belong to non-polar solvent, can not dissolve mutually with arbitrary proportion and Viscotrol C at normal temperatures, cause the residual oil content that leaches the dregs of rice higher, general (Zhao Furong: the discussion of castor seeds pre-pressing extraction technology about 3.5%, oil technology, Xi'an oil research institute of the Ministry of Commerce, 1980(3)).CN86103319A on February 11st, 1987 disclosed " comprehensive utilization of castor seeds " introduces and castor seeds is shelled shell, benevolence separate machined with peeler; Castor seeds Renhe ethanol is pressed extraction through a mill, three collections, three, again through underpressure distillation, obtains the method for thick oil and slag.Its weak point is: alcoholic acid reclaims relatively difficulty, needs to adopt the ternary azeotropic distillation dehydration or add the dewatering agent distillation dehydration, and energy consumption is big, production cost is high; And Residual oil height in the dregs of rice is not seen the relevant concrete measure that shells in addition.
The present invention is exactly for overcoming a kind of method that leaches Viscotrol C with alcohol that above-mentioned deficiency is studied.
Purpose of the present invention can reach by following measure: castor seeds is removed various impurity through cleaning equipment, rolls embryo with flaker then, rolls material (being called embryo) behind the embryo and advances cooking pot and steam and fry, and follows into pre-squeezer (or oil press zhai) squeezing.The expressed crude oil is treated as the refining Viscotrol C through precipitation, filtration, depickling, decolouring or deodorization.Pre-pressed cake is gone into leacher through fragmentation.The moisture controlled of pre-pressed cake is 2～14%, and oil-containing is controlled at below 15%, and the concentration that leaches solvent alcohol is 70～95%, 50～90 ℃ of extraction temperatures, and the ratio of alcohol and pre-pressed cake is 1: 0.6～1.2,60～120 minutes processing condition of extraction time leach.The mixing oil (mixture of Viscotrol C and alcohol) that leaches filters through precipitation, strainer, and evaporating pot evaporation, stripping tower are isolated alcohol, make it to become the leaching Viscotrol C.Leach Viscotrol C and become the refining Viscotrol C through precipitation, filtration, depickling, decolouring and deodorizing technology process again.The warm dregs of rice that leacher comes out are gone into the evapo-separated machine evaporation and are separated alcohol, and the dregs of rice that evapo-separated machine comes out can be made fertilizer, or further processing system feed.The isolated alcohol of flash-pot, stripping tower and evapo-separated machine is through condensation, branch water and rectifying recycling use.
Detect the acid number and the color and luster that leach Viscotrol C, by the alkali lye of acid number preparation proper concn, will leach Viscotrol C and be warming up to 60 ℃, under whipped state, added alkali lye, continue to stir neutralization in 15 minutes, treat that oily soap begins when separating to heat up, speed by 1 ℃ of per minute liter is warming up to 80 ℃, and then to add concentration be that 5% the oil that accounts for weighs 20～40% common salt aqueous solution, then continues to be warming up to 90～100 ℃.Staticly settled 40～50 minutes, and emitted separation waste water, and wash be neutrality to waste water 2～3 times till.Under vacuum state, dewater.Dehydration finishes oily temperature rise to 90～100 ℃, adds to account for oil and weigh 1～3% gac and account for oil and weigh 3～5% carclazyte decolouring, when treating oily temperature drop to 70～80 ℃ after the decolouring, filters and removes carclazyte and gac, goes into the deodorizing tank deodorization at last, promptly gets the refining Viscotrol C.See attached list with the Viscotrol C quality that the inventive method is produced.Optimum process condition of the present invention is:
Ethanol concn 90%, 80 ℃ of extraction temperatures, the ratio of alcohol and Semen Ricini cake 1: 1.1, extraction time 130min, the moisture content 8% of pre-pressed cake contains Viscotrol C and is controlled at below 10% in the Semen Ricini cake.(table is seen the literary composition back)
The advantage that the present invention had is:
1. adopt alcohol to make the solvent extraction Viscotrol C, position changing property reactions such as the hydroxyl of ricinoleic acid, two keys, guaranteed the use value of Viscotrol C as good technical oils.
2. be applicable to existing pre-press for extracting juice-leaching grease production technology, need do not increase any equipment, can produce Viscotrol C.
3. leach the oil yield height, residual oil content is low in the dregs of rice.
4. alcohol is a kind of biological renewable solvent, and it originates sufficient, and price is low, and consumption is low, easily reclaim, but save energy, and pollution-free.
5. obtained Viscotrol C quality better, the quality of the dregs of rice is also high, the outward appearance look shallow.Can be for further exploitation.
Accompanying drawing is embodiments of the invention
Fig. 1 is that castor seeds presses-alcohol extract technology schema in advance.
Fig. 2 is the refinery practice schema that presses Viscotrol C in advance, leaches Viscotrol C.
The optimal processing parameter of present embodiment is:
Concentration is 90% alcohol, 80 ℃ of extraction temperatures, and the ratio of alcohol and Semen Ricini cake is 1: 1.1, extraction time 120min, the water content of pre-pressed cake is 8%, the Residual oil in the Semen Ricini cake is below 10%.
The subordinate list castor cake leaches the leading indicator of crude oil and refining castor oil
Project category leaches crude oil refined oil Castor oil national standard (GB4234-87)
Proportion (20/40 ℃) 0.9515-0.9675
Refraction index (20 ℃) 1.4792 1.4765-1.4810
Carbon valency (Webster method) 82.77 80-88
Saponification value (mgkoH/g) 178.8 177-187
Acetyl value (mgkoH/g) 152.9＞140
Smell has residual alcohol smell free from extraneous odour to have the intrinsic smell of Castor oil
Acid value (mgkoH/g) 14-16 1.91＜2.8
Moisture and volatile matter content (%) 0.02＜9.10
Impurity (%) 0.003＜0.05
Transparency is muddy transparent
Color and luster (Lovibond 1 ") Y35 R8.4 Y20 R1.5 Y20 4＜1.5
Claims (2)
1, a kind of castor seeds earlier through cleaning, roll embryo, steam to fry and press in advance and get a part of Viscotrol C, use the method for the Viscotrol C in the solvent extraction Semen Ricini cake then, it is characterized in that, used leaching solvent is 70～95% alcohol, the moisture content 2～14% of pre-pressed cake, 50～90 ℃ of extraction temperatures, the ratio of alcohol and pre-pressed cake 1: 0.6～1.2, extraction time 60～120 minutes, the Residual oil of pre-pressed cake is controlled at below 15%.
2, the method from Semen Ricini cake leaching Viscotrol C according to claim 1 is characterized in that the mixing oil that is leached separates alcohol through precipitation, filtration, evaporation and stripping process process, gets Viscotrol C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92101670 CN1028539C (en) | 1992-03-14 | 1992-03-14 | Process for extracting castor oil by using alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92101670 CN1028539C (en) | 1992-03-14 | 1992-03-14 | Process for extracting castor oil by using alcohol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1065879A CN1065879A (en) | 1992-11-04 |
| CN1028539C true CN1028539C (en) | 1995-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92101670 Expired - Fee Related CN1028539C (en) | 1992-03-14 | 1992-03-14 | Process for extracting castor oil by using alcohol |
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| CN (1) | CN1028539C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101161784B (en) * | 2007-11-22 | 2011-11-16 | 中国农业科学院油料作物研究所 | Method for extracting conversion biodiesel from oil pressing cake |
| CN102559372B (en) * | 2011-12-29 | 2013-07-17 | 张天久 | Ethanol replacement oil preparation method and equipment |
| CN103173275A (en) * | 2013-03-06 | 2013-06-26 | 曹庸 | Pressing-low-temperature continuous phase-change castor oil extraction method |
| CN103396880A (en) * | 2013-07-23 | 2013-11-20 | 怀宁县小市植物油厂 | Frying colza oil and preparation method thereof |
| CN103382412B (en) * | 2013-07-26 | 2015-06-24 | 怀宁县小市植物油厂 | Preparation process for low-temperature cold-pressed carotene-rich peanut oil |
| CN103382411B (en) * | 2013-07-26 | 2015-06-24 | 怀宁县小市植物油厂 | Production process for low-temperature pressed compound rapeseed oil |
| CN104099172A (en) * | 2014-08-08 | 2014-10-15 | 伊犁洋宁蓖麻深加工有限公司 | Refining process method of castor oil |
| CN104357214A (en) * | 2014-11-13 | 2015-02-18 | 江苏金洲粮油食品有限公司 | Production method of grape seed oil |
| CN104450169A (en) * | 2014-11-24 | 2015-03-25 | 陕西鹮宝实业有限公司 | Preparation method for organic black rice bran oil |
| CN104673477B (en) * | 2015-01-20 | 2017-11-21 | 天津科技大学 | It is a kind of to extract the method and purposes of recinine and allergic effect parent toxin in castor oil synchronization leaching castor bean meal with ethanol solution |
| CN107828505A (en) * | 2017-11-11 | 2018-03-23 | 蒋世芬 | A kind of extraction extracts peanut oil from the peanut dregs of fat |
| CN110540897A (en) * | 2019-08-08 | 2019-12-06 | 汕头市禅泰化工有限公司 | Low-temperature extraction method of kitchen plant edible oil and kitchen plant edible oil |
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1992
- 1992-03-14 CN CN 92101670 patent/CN1028539C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1065879A (en) | 1992-11-04 |
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