CN100387698C - Extraction method of jasmine flower absolute oil - Google Patents

Extraction method of jasmine flower absolute oil Download PDF

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CN100387698C
CN100387698C CNB2005100185865A CN200510018586A CN100387698C CN 100387698 C CN100387698 C CN 100387698C CN B2005100185865 A CNB2005100185865 A CN B2005100185865A CN 200510018586 A CN200510018586 A CN 200510018586A CN 100387698 C CN100387698 C CN 100387698C
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jasmine
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oil
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flower
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CN1673324A (en
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宋开泉
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Abstract

A method for extracting jasmine absolute oil is characterized in that: extracting fresh flos Jasmini sambac in countercurrent extraction machine for 1-3 hr, repeatedly circulating, collecting the extractive solution, concentrating under reduced pressure to recover solvent, discharging the viscous extractive solution, cooling to obtain flos Jasmini sambac extract, and subjecting the flos Jasmini sambac extract to supercritical CO extraction2Mixing and extracting the fluid, and fractionating the separated crude oil by a rectifying column to obtain the jasmine absolute oil, wherein the yield of the absolute oil can reach 48-55% by adopting the extraction method.

Description

A kind of extracting method of jasmine oil
Technical field
The present invention relates to extract in a kind of fresh flower the method for effective ingredient, specifically is the method for extracting jasmine perfume oil from Flower of Arabian Jasmine.
Technical background
The jasmine fresh flower enriches the natural aromatic composition and views and admires and specialty industries plant and the raw material that extracts spices obtain extensive plantation as a kind of owing to containing.Through the spices main component of chemical analysis Flower of Arabian Jasmine by jasmal, α-phantol, leaf-alcohol, methyl jasmonate, acetate phantol ester, ethyl benzoate, benzaminic acid formicester, jasmine lactone, cis-jasmone, the mixture of tens kinds of organic compound such as indoles is formed.These fragrance components can be widely used in various perfume, perfumed soap, face cream and the daily cosmetics essence as type-odor, also to many flavor essences of international popular such as chypre, violet, bashfully spices such as flower plays modification.China standard GB 2760-86 is defined as food interpolation perfume agent aspect food, and the spices that is mainly used in roasting jasmine fragrant flower tea, biscuit, cake, candy, can, drinks, cigarette class and the roasting food of training adds.In numerous industrial circles such as weaving, clothes, process hides, medicine, papermaking, application is arranged all.Part spices has effects such as sterilization, anticorrosion, excitement, plays a role in health care in clinical medicine and day chemical industry, and purposes is wide.
The domestic plantation for the jasmine fresh flower of China is with a long history, obtain the Heng County, Guangxi of the State Administration of Forestry and mechanism of relevant employer's organization name " township of Chinese Flower of Arabian Jasmine ", the area of whole county plantation Flower of Arabian Jasmine reaches more than 70,000 mu, produce more than 70,000 ton of jasmine fresh flower per year, annual is to produce the florescence in mid-April-late November, full-bloom stage spending the 6-9 month tide phase in every day fresh flower go on the market about 300 tons, the whole county has established more than 180 families of Flower of Arabian Jasmine tea processing factory that big small-scale does not wait, and the processing of fragrant flower tea always accounts for more than national jasmine tea ultimate production 1/3 share.
Yet the technology of basement system fragrant flower tea shows, the processing of scented tea only is to use in the fresh flower to have volatile aroma gases part, and have the taste component of enriching and fat-soluble aromatic oil thing, produce when when fresh flower bursts forth, discharging, but and fail to extract and be used as colored slag and discard, these valuable perfume bases are not fully used undoubtedly, increase the additional output value so extract effective ingredient from plant fresh flower resource, and it is very necessary to make full use of the local resource advantage.
By preparing jasmine concrete with extraction in the Flower of Arabian Jasmine, with extraction process separation, purifying jasmine absolute product, can increase substantially the local characteristic industry again, for promoting sustainable development, utilize resources synthetically is of far-reaching significance.
Domestic possessed sophisticated processing technology to by the production technique of extracting jasmine concrete in the jasmine fresh flower, and also formulating has national technical standard to carry out the jasmine concrete quality product is guaranteed.Yet the large-scale production of jasmine absolute is seen report is not arranged, do not work out the technological standard of the country level that jasmine absolute is arranged yet and announce.
Scientific and technical literature by retrieval, it is as follows that we find some open source literatures reports that extract spices from Flower of Arabian Jasmine:
1.[autograph] the Flower of Arabian Jasmine slag extracts research [author] Ding Qinghou [periodical name] the food research and development .1996 of essence, 17 (4) .-22-24[digests] extract medicinal extract and adopt lixiviation process, under 10 ℃~-15 ℃ low temperature, dissolve, permeate, distribute, spread and separate out perfume oil.Then medicinal extract is concentrated and adopt the negative pressure of vacuum stirring to concentrate, use the absorption of 99.99% dehydrated alcohol, separate out into cream, the sherwood oil residual quantity is controlled at below 2%.Soak educate extraction before, sherwood oil carries out fractional analysis, uses separation column, adds 5% whiteruss and carry out vapor rectification process in sherwood oil. with moisture, impurity in the sherwood oil and the volatile matter fractionation of not having.Adopt instrument to carry out solvent oil analysis and evaluation, reach standard.
2.[autograph] the beautiful will of novel process [author] Yang Zi Chinese bush cherry woods [periodical name] Guangxi agricultural sciences .1995 (1) the .-44-44[digest of jasmin oil lixiviate] lixiviate: selecting boiling point for use is 50-55 ℃ sherwood oil, bud and sherwood oil is mixed by 1: 2, putting into the rotation of rotary type extraction unit embathes, soak altogether and talk 3-4 time, can make a bud fragrance part leaching yield reach 94%, the sherwood oil that will embathe three buds then concentrates.Concentrating under reduced pressure, sherwood oil is reclaimed in evaporation.Obtain the organic liquor-fragrant flower medicinal extract of cured shape reddish-brown at last.Refining: with the fusing of fragrant flower medicinal extract low-grade fever, be dissolved in 10 times heat wine essence then, put in people's agitator and embathe 5-6 time, make cured matter precipitation, filtrate being contains the spirituous solution of jasmin oil
3.[autograph] the adverse current leather of the extraction of Flower of Arabian Jasmine spices and the research of application [author] Zhang Xinfa Xiao Xi thereof and [periodical name] the journal .2000 of Wuhan University of Technology (1) [digest] different solvents follows the example of and extracts Flower of Arabian Jasmine medicinal extract and use ether, sherwood oil, ethanol and V ether respectively: V sherwood oil=2: 1 and V ethanol: the mixed solvent of V sherwood oil=1: 2 is made extraction solvent, control different temperature, produce Flower of Arabian Jasmine medicinal extract.
4.[autograph] extraction [author] gold of jasmine flower essence (oil) black [mechanism] Chengdu aviation 610021[of Vocationl Technical College periodical name that continues] technology and market .2003 (3) .-20-20[keyword] complete processing natural essence jasmine flower essence extraction [digest] Flower of Arabian Jasmine complete processing is: organic solvent lixiviate-thickness medicinal extract (paste), jasmine concrete-dissolving-Tuo La-jasmine absolute, jasmine absolute, precision work obtains superfine jasmine oil.
5.[autograph] preliminary study [author] that concerns between Jasmine tea aroma component and the quality is as if Lu Ning Xiao Chunpandong [mechanism] Agricultural University Of Anhui Ministry of Agriculture's tealeaves biological chemistry and biotechnology key lab, [periodical name] Food science .2004,25 (6) .-93-97[keywords] Jasmine tea aroma component correlation of attributes volatile aroma oil total amount [digest] this paper extracts and analyzed the volatile aroma composition of three kinds of different stage Jasmine teas, and discuss and determined that volatile aroma oil total amount is the basis of decision fragrance concentration; The fresh degree of inferring low boilers confrontation fragrance has very important influence.In addition, the relation between Jasmine tea aroma component and the quality has been discussed, has been determined phantol, jasmal, suitable-the 3-hexenol, wintergreen oil, phenylcarbinol are the main fragrance ingredient of Jasmine tea, and the being proportionate property of quality of preceding four kinds of materials and fragrance.
6. Chinese patent title: Flower of Arabian Jasmine essential oil new method for extracting application (patent) number: 02152166.2, applicant: Guangzhou Hecheng Sanxian Biological Science ﹠ Technology Co. Ltd. address: the international The East Pagoda 802-806 of the commerce trading center summary in No. 122 Guangzhou, limit, TiYu East Road, GuangZhou City, GuangDong Province: 1, a kind of Flower of Arabian Jasmine essential oil new method for extracting, use the extractant of supercritical co as the Flower of Arabian Jasmine essential oil, extract and carry out in two steps: 1) adsorption process: 2), desorption process: concrete steps comprise as follows: fresh Flower of Arabian Jasmine layering is packed in the sealing flower stand (2), damp atmosphere enters from the bottom, extract out on top, Flower of Arabian Jasmine divides multilayer to place wherein, 5-40 centimetre of flower layer thickness.Contain the spices air and blow over adsorption tower (6) by pipe (3) continuously after blower fan (4) pressurization, sorbent material branch multilayer is vertically placed in the adsorption tower, with adsorbed fragrance ingredient in the air, by adsorbent bed air by managing (8) emptying.Air flow quantity 1 liter/kilogram fresh flower minute-60 liters/kilogram fresh flower minute, humidity 60-98%, by 3 hours-48 hours time, until Flower of Arabian Jasmine fragrance distribute substantially finish till.Residual flower is discharged by (5) and is discarded, the sorbent material that has adsorbed essential oil enters supercritical extraction reactor (10) by (9), novel sorbents is replenished by (7), CO2 is pressurized to supercritical state through high-pressure pump (17), enter extraction kettle (10) by pipe (18), extracting pressure 9-40MPA, extraction temperature 15-50 ℃, 0.5-4 hour extraction time, the CO2 fluid that has extracted essential oil is through valve (11) the 4-9MPA pressure that reduces pressure, through interchanger (12) temperature is controlled at 25-45 ℃ and enters separating still (13) and parse essential oil, emit jasmin quintessence oil by pipe (14).Resolve back CO2 gas through pipe (15), condenser (16) liquefaction back is returned systemic circulation and is used.
7. Chinese patent title: a kind of method application (patent) of from Flower of Arabian Jasmine, extracting essence number: 98121592.0 applicants: University of Fuzhou address: bright of No. 11 301 mailbox Cao in Gulou District Xiao Wei road, Fuzhou City, Fujian Province, summary: the invention discloses a kind of method of from Flower of Arabian Jasmine, extracting essence, it adopts the method for fractional steps to extract essence, sherwood oil with 60-90 degree boiling range is an extraction agent earlier, and the back is that extraction agent extracts cream jasmin france with mixed solvent.Mixed solvent adds sherwood oil by methylene dichloride and forms.Methylene dichloride and sherwood oil are that extraction agent extracts cream jasmin france with the mixed solvent of forming in 1.5: 1 to 1: 1 scopes, the present invention has improved the yield of jasmine flower essence, the absolute oil total yield is that two step sums are 2.4-4.3 ‰, it is easy and simple to handle, mild condition, need not use specific installation, broad application prospect is arranged.
8. Chinese patent title: the production technique of natural refined jasmine oil and equipment application (patent) number: 90108638.X, applicant: Jinhua City Inst. of Industrial Science address: No. 49 summaries in bright moon road, Jinhua, Zhejiang Province city: a kind of vapor phase process that adopts is directly told production technique and the equipment that extracts natural refined jasmine oil the fragrance of putting from Flower of Arabian Jasmine, this technology is simple, production safety, the jasmin quintessence oil productive rate reaches more than 2.5%, while essential oil quality height, has complete jasmin breath, fragrance is pure, natural jasmin sense is strong, is a kind of perfuming agent that is specially adapted on highclass perfumes and the food.Principal claim: a kind of production technique and equipment that from Flower of Arabian Jasmine fragrance, directly extracts jasmin quintessence oil, divide to tell and inhale and two stages of desorb, it is characterized in that telling pumping phases adopts by telling fragrant tower, heat exchanger, the tower of enfleuraging, oxygen supply, variable valve, blower fan, preheater, the loop that differential pressure flow meter and humidity regulator are concatenated into and the process flow system of sealing and circulating, in closed system, form a continuous round-robin air-flow by blower fan, the Flower of Arabian Jasmine that this air-flow will be told in the fragrant tower tells the aromatoising substance of releasing, by the tower of enfleuraging, being absorbed agent absorbs, aromatoising substance in Flower of Arabian Jasmine has been told, extract aromatoising substance in the absorption agent with extraction agent then, obtain jasmin quintessence oil through distillation again, its processing condition are as follows: temperature is 20~100 ℃, humidity is 20~95%, wind speed is 0.01~1.5 meter per second, oxygen level is 5~80%, and the flower layer thickness is 5~60 centimetres, and extraction time is 4~48 hours.
The weak point that the production technique of above-mentioned document extraction jasmine concrete that has and jasmin quintessence oil exists, be that the residual solvent retrieving arrangement adopts water vapor directly to take away solvent recuperation in the flower slag, cause solvent bank water easily, for a long time High Temperature High Pressure can make high-load protein oxidation in the fresh flower slag and sex change produces foreign odor flavor solvent slop and is difficult to remove on the other hand, causes the quality product and the aromatic odour that influence jasmine concrete when recycling.
Summary of the invention
The inventor is through years of researches, and the whole bag of tricks that Flower of Arabian Jasmine is extracted contrasts, and adopts a kind of brand-new extracting technology, is purified into to contain and enriches taste component and fat-soluble purified jasmine absolute.
The inventor's technical scheme is achieved in that
The extracting method of jasmine oil comprises solvent extraction, extraction, spissated process, is characterized in: earlier Flower of Arabian Jasmine is obtained jasmine concrete with the lixiviate of solvent adverse current, the critical extraction with carbonic acid gas obtains jasmine absolute again, and concrete steps are as follows:
1, after jasmine fresh flower flower bud is plucked, the cold of loosing earlier prevented thermal metamorphism in clean, shady and cool vacant room, placed 3-10 hour, treat that bud bursts forth when releasing perfume (or spice), in the digester of packing into, according to jasmine fresh flower raw material: the ratio of solvent=1: 3.5-5, adverse current lixiviate extraction in digester, circulation repeatedly, the extraction time allowed leach liquor all deliver to the basin standby from digester bottom efflux pump after 1-3 hour.
2, after leach liquor is all emitted digester, the pyritous thermal oil with being pumped in the digester interlayer, remaining in solvent in the colored slag by heat-conducting oil heating, is recycled through cooling, Separation and Recovery to basin.The recovered temperature 70-85 of solvent ℃, 90 minutes time.
3, vat liquor is sent in the Sealed sandwich pot heating after filtering and reclaim solvent under normal pressure, and temperature is controlled between 80-85 ℃, treat that solvent the rate of recovery reaches 70% from vat liquor after, move in the vacuum decompression jacketed kettle, be evaporated to till solvent all reclaims.Be warming up to 60 degree then, removed moisture content in 15-20 minute, vat liquor is become sticky thickly emit cooling and make jasmine concrete.When vacuum decompression concentrated, the vacuum pressure gauge pressure was 1kg/cm, controlled temperature 45-52 ℃.
4, jasmine concrete pumps into supercritical CO simultaneously through the low-grade fever dissolved 2Fluid mixes and enters extraction, extraction perfume oil, and controlled temperature 25-30 ℃, pressure 9-13Mpa, first, second separator of immigration is heated and is discharged CO after time 1-2 hour 2Gas, loop enter the ice chest cycle applications.Isolated thick oil obtains jasmine absolute behind rectifying column fractionation water outlet and residual solvent and impurity.
Above-described leaching process adopts the continuity operation of raw material and solvent countercurrent extraction.
The solvent that above-described leaching process adopts is No. 70 solvent oils.
The salient features quality index and the test method of No. 70 solvent oils are as follows:
Figure C20051001858600061
Adopt the benefit of No. 70 solvent oils to be: (1) solvent-stable performance is good, extraction yield height; (2) the extraction process mild condition is nonpolarity, and solvent recuperation is easy; (3) do not contain aromatic hydrocarbon and objectionable impurities, good product quality; (4) iodine content should be controlled at minimum degree in the solvent oil, extracts the medicinal extract better quality that obtains like this.
The equipment of extraction plant of the present invention constitutes: solvent tank, heating unit, lixiviate jar, solvent recovery unit, supercritical fluid extraction equipment, separate pump; the CO 2 high pressure pump; auxiliary pump; refrigeration system; carbonic acid gas basin, heat-exchanger rig, purification system, under meter, temperature, pressure control (protection) system.
Lixiviate jar heat transfer unit (HTU) of the present invention is to adopt the thermal oil heat-exchanger rig, the heat exchange form of document introduction is to flower slag solvent tank direct heating with water vapor, and the present invention changes indirect heat transfer into, promptly original water vapor pressure boiler is used instead with oily Dai Shui, oil is put the workshop by pump from pipe-line transportation after boiler is heated indirectly each uses hot device, passes back into boiler through pipeline again and recycle after the exchange of heating power.This oil heating unit has been avoided the original pressure hazard hidden danger more than 8 kilograms of boiler, on the other hand because the thermal oil that uses, transformer oil, soaking time is long, heats up therefore to have saved coal consumption significantly rapidly, and is few with coal, the flue waste steam exhausting is free from environmental pollution, the more important thing is that recovered solvent can be by water and smell pollution, the constant product quality of jasmine concrete, aromatic odour is pure.Trample factually and show: 0.5 ton of boiler consumed coal 1000 kg/day originally, the existing coal 200-300 kg/day that only consumes.
The technical indicator of jasmine absolute of the present invention:
Look shape: red-brown
Fragrance: have jasmine fresh flower fragrance.
Solubleness: in the time of 0 ℃, it is haze-free that a jasmine absolute is dissolved in 3 parts of ethanol.
The chemical ingredients of jasmine absolute:
Phantol: 〉=18%
Jasmone 〉=5%
Acetate benzyl fat: 〉=6%
Indoles: 〉=2%
Alcohol: 〉=8%
Farnesene: 〉=10%
Farnesol: 〉=4.5%
Methyl anthranilate: 〉=4%
Phthalic acid dibutyl ester: 〉=2%
Below the narration jasmine absolute is purified and is extracted principle:
Adopt the key problem in technology of nontoxic nonpolarity No. 70 solvent adverse current lixiviate taking technique flow processs to be: the continuity operation that raw material and solvent move by countercurrent direction mutually, the general method that reclaims solvent or fresh solvent from fresh flower is to add from the discharge port front end, and the concentration that contains aromatoising substance herein in the solvent is minimum.Vat liquor flows out after adding the feeding mouth end, and to include the concentration of aromatoising substance the highest for solvent herein.Because solvent and raw material thing move carrying out adverse current lixiviate direction continuously, raw materials at different levels contain aromatic degree and solvent, and to contain aromatic degree ratio unusual, at different levels all have a bigger concentration difference, and in this process, lixiviate washing is carried out simultaneously, so extracting effect and efficient are all good, especially all better with fragrance qualitatively, can obtain the fragrance and the better physical and chemical index of new floweriness, be suitable for processing in enormous quantities.Nontoxic, nonpolarity solvent extration, be a kind of material transfer process of utilizing organic solvent " having volatility " that some compositions leaching in the raw material is put forward.Principle is: when solvent when being contacted by the lixiviate material, solvent permeates from material table towards interior tissue, and some composition in the interior tissue is dissolved out.When the concentration of the projecting outside atmosphere of concentration of interior tissue solution, then form concentration difference, produce the diffusion impellent.Under the impellent effect, solvent in the highly concentrated solution spreads in the solution of lower concentration, go in the solvent around some composition is delivered in the feasible interior tissue of constantly dissolving, the concentration difference that always lasts till this transmittance process equals zero and just stops, this moment, the transmission of material was in balance, just finished leaching process, by immersion liquid is separated, reclaimed operation such as solvent and make medicinal extract.
Pass through nontoxic by the solvent leach extraction method, nonpolarity No. 70 solvent extractions and the jasmine concrete made, having compositions such as a large amount of plants is cured, pectin, resin, starch, fiber, carbohydrate, protein is also come out by lixiviate together, and these impurity of need purifying out just can be made the absolute oil product, and jasmine absolute is intended with selectivity supercritical CO preferably for this reason 2The fluid extraction method is separated, purifying.Adopt the principle of this method to be: material all has its inherent critical temperature and emergent pressure, on the phasor of pressure-temperature, be called stagnation point, material more than stagnation point both is in the also supercritical state of non-pneumatic of on-liquid, be called supercutical fluid, material is when near be in the stagnation point supercritical state, and its thermoisopleth gradient is mild, and this moment, the subtle change of temperature and pressure can cause that all density takes place greatly to change, along with increasing of pressure, the supercritical flow volume density increases.
Important feature of the present invention also is to use the lixiviate of solvent adverse current earlier, uses the supercritical extraction of carbonic acid gas again, and the stagnation point of carbonic acid gas is lower, critical temperature is near normal temperature, and nontoxic, the chemical stability height, do not burn, price is low, is the most frequently used supercritical extraction agent.
According to data report, the boiling point height of general grease extract and the volatile matter boiling point is low, thereby the concentration in gas phase is extremely low, in the supercritical fluid solution of materials such as carbonic acid gas, be subjected to high pressure after, their phase concentrations rises to 1,000,000 times.Even have and be increased to 1,000,000,000 times example.For this reason when supercutical fluid arrives near density of liquid and have a dissolving power close with solvent, can go out target substance to the interior of articles separated and dissolved by rapid permeability, reach extraction equilibrium fast, therefore supercritical fluid extraction is better than solvent extraction, and this is particularly important when extracting useful component from solid.
The present invention compared with prior art, except above-described technical characterstic, its outstanding substantive distinguishing features and obvious improvement also is:
1, we recognize from technical background: the extraction jasmine concrete is domestic from fresh flower has disclosed producing and manufacturing technique to exist weak point to be: the residual solvent retrieving arrangement adopts water vapor directly to take away solvent recuperation in the flower slag, cause that easily moisture penetrates and is with water in the solvent after cooling, for a long time High Temperature High Pressure can make high-load protein oxidation in the fresh flower slag and sex change produces foreign odor flavor solvent slop and is difficult to remove on the other hand, causes the quality product and the aromatic odour that influence jasmine concrete when recycling.
The technology that the present invention adopts: the best fresh flower material of adverse current lixiviate extraction jasmine concrete, yield 0.19%-0.21%, the flower-grower is looked in the variation of extraction yield, and to receive defloration time adolescence relevant, immersion liquid concentration contains fragrant amount at 70-75% and can emit in the technological process, be beneficial to the selectivity of control immersion liquid, reduce foreign matter content.
2, the present invention changes flower slag solvent tank for interlayer conducts heat and uses the thermal oil heat-exchanger rig instead, original water vapor pressure boiler is used instead with oily Dai Shui, oil is put the workshop by pump from pipe-line transportation after boiler is heated indirectly each uses hot device, pass back into boiler through pipeline again and recycle after the exchange of heating power, boiler can adopt the open-type structure like this.
3, adopt preferred supercritical CO 2Fluid-operated technology, jasmine concrete through little heating for dissolving by being pumped into mixing tank and critical CO after ice chest cooling 2Fluid pumps into mixing, and mixed solution enters in the extraction kettle controlled temperature 25-30 ℃, pressure 9-13Mpa, supercritical region, more than time 1-2 hour, make CO 2Be in liquid state, because the CO of liquid state 2Density increases considerably, and causes supercutical fluid that the reactive force of medicinal extract solute is increased considerably, and forms big dissolving power, and the aspect is because CO in addition 2The density and the specific inductivity of supercutical fluid are bigger, and the little seepage force of viscosity is big, and be therefore bigger to the solubleness of solute, is better than the extraction process of solvent.Supercritical CO 2Fluid is along with the variation solubleness of pressure and temperature can sharply change, and therefore control pressure can be to this quality products of purifying out that separates with solute with temperature by practice.Adopt the yield of extracting method of the present invention can reach 48-55%.
Embodiment
Embodiment one: the cream method is obtained through refining in the adverse current lixiviate continuously
The purchase flower-grower plucks the piece big of listing, pure white jasmine fresh flower flower bud scatters in indoor, treat that bud bursts forth when releasing perfume (or spice), continuously flower being sent into horizontal sealing stainless steel rounding tube by rotary conveyor has in the main digester that the spiral propeller paddle different with pitch constitute, use the pump delivery solvent simultaneously, make solvent moisten the jasmine fresh flower.Regulating stepless speed-regulating motor slowly moves main shaft drive thruster, raw material and solvent are moved by countercurrent direction mutually, the proportioning of fresh flower and solvent is that 1: 5 amplitude keeps pumping into and the fresh flower additional proportion of circulating solvent in the main frame, and fresh flower can be in the lixiviate state fully in this model machine.Fresh flower by paddle and spiral propeller while stir slowly move up and solvent through pump from discharge port adverse current and cross part and moisten the flower adding simultaneously from top to bottom by flower inlet.Finishing extraction time to the discharge port traveling time from bottom to top through stepless speed-regulating motor drive control fresh flower in the main frame finished at 1.5-2 hour.Vat liquor is observed and is emitted the injection basin after fragrant substance concentration content reaches height with the experience colorimetric.Vat liquor advances the normal pressure temperature by pump and concentrates at 78-80 ℃ the membrane concentrator that rises, and removes moisture 70% when above, and emitting flows automatically to enter stocks jar.Concentrating the vat liquor that reclaims most of solvent (about 70%) sucks in the concentrating under reduced pressure jar automatically through vacuum filtration, vacuum pressure gauge temperature control under 1 kilogram of index harvests whole solvents next time 45-50 ℃ of condition, be warming up to 60 ℃ of constant temperature again, removing residual moisture (by leaching in the fresh flower) in 15-20 minute forms viscous fluid and emits, obtain jasmine concrete through cooling, yield 0.19-0.21%, colored slag after soaking is delivered to the solvent that squeezes out in the colored slag in the pipeline of sealing and is flowed back to main frame by spiral propeller, disperse progressively to enter then to discharge after recovery tower all reclaims the slag internal solvent again.The heating temperature control reclaims solvent for 68-70 ℃.
Jasmine concrete dissolves through low-grade fever, be pumped in the sealing mixing tank with simultaneously by ice chest through the supercritical CO of pump delivery to mixing tank 2Fluid mixes, and moves on in the extraction kettle, and the 9-13Mpa that keep-ups pressure in the temperature 25-30 ℃ of scope, extracted 1-1.5 hour, and extraction liquid separates recovery CO through first, second level 2The nitrogen body is put ice chest from loop pipe and is recycled, and the thick jasmine absolute after the separation is sent in the rectifying column, further removes the jasmine absolute goods after residual solvent and moisture and impurity obtain purifying.
Embodiment two: single jar of scraper-type soaks colored machine extraction system medicinal extract method
After jasmine fresh flower flower bud is bought back by market, the cold of loosing prevented thermal metamorphism in vacant room of workshop, treat that bud bursts forth when releasing perfume (or spice), the interior threading amount 400-500 kilogram/machine of the 1.5m scraper-type fresh flower digester of packing into, with raw material (fresh flower): solvent (solvent)=1: the amplitude of 3.5-4 is added solvent (generally observing solvent liquid device machine capacity 2/3 from visor), start the driven by motor scraper plate and slowly rotate, solvent was put machine top through sealing-duct by pumping from the motor spindle outflow and is injected circulation repeatedly after about 30 minutes.Rotating fresh flower by scraper plate slowly rolls in machine.The extraction time can put jar after 1.5 hours, allow leach liquor all deliver to the high-order basin standby from the bottom efflux pump.
Leach liquor is all emitted and is soaked Hua Jihou, the water vapor of band pressure is sent into from boiler soak in the colored machine, take solvent the colored slag out of by steam, recycles through cooling, Separation and Recovery to basin.The 90 minutes recovered temperature 78-80 ℃ time of solvent.
Vat liquor is sent in the Sealed sandwich pot heating after filtering and is reclaimed solvent temperature be controlled between 80-85 ℃ under normal pressure, treat that solvent the rate of recovery reaches 70% from vat liquor after, move in the vacuum decompression jacketed kettle, be evaporated to till solvent all reclaims.Be warming up to 60 ℃ then, removed moisture content in 15-20 minute, vat liquor is become sticky thickly emit cooling and make jasmine concrete.When vacuum decompression concentrated, the vacuum pressure gauge pressure was one kilogram of pressure, controlling temperature 45-52 ℃.
Jasmine concrete is through low-grade fever dissolving and the supercritical CO that pumps into simultaneously 2Fluid mixes and enters extraction, extraction perfume oil, and through 25-30 ℃ of temperature control, pressure 9-13Mpa, first, second separator of immigration is heated and is discharged CO after time 1-1.5 hour 2The gas loop enters the ice chest cycle applications.Isolated thick oil is through rectifying column fractionation water outlet, residual solvent and impurity and jasmine absolute after making purifying.
Embodiment three:
The scraper-type fresh flower digester (steam spray heat structure) of 1.5 meters of diameters is transformed into heat insulation delivery type (thermal oil heat exchange structure), conducts the heat to fresh flower digester inside by heated oil,
Buy back jasmine fresh flower flower bud diffusing cool in vacant room of workshop by market, treat evening during 9-10 bud burst forth when releasing perfume (or spice), the interior threading amount 400-500 kilogram/machine of the 1.5m scraper-type fresh flower digester of packing into, with raw material (fresh flower): the ratio of No. 70 solvent oil=1: 3.5-4 is added solvent, solvent volume is 2/3 of a digester capacity, start the driven by motor scraper plate and slowly rotate, solvent was put machine top through sealer by pumping from the motor spindle outflow and is injected circulation repeatedly after about 30 minutes.The extraction time can put jar after 1.5 hours, allow leach liquor all deliver to the high-order basin standby from the bottom efflux pump.
Leach liquor is all emitted and is soaked Hua Jihou, the thermal oil of heating is sent into soak in the colored machine interlayer, take solvent in the colored slag out of by pump, recycles through cooling, Separation and Recovery to basin.Spend 90 minutes time for the recovered temperature 78-85 of solvent ℃.
Vat liquor is sent in the Sealed sandwich pot heating after filtering and is reclaimed solvent temperature be controlled between 80-85 ℃ under normal pressure, treat that solvent the rate of recovery reaches 70% from vat liquor after, move in the vacuum decompression jacketed kettle, be evaporated to till solvent all reclaims.Be warming up to 60-63 ℃ then, removed moisture content in 15-20 minute, vat liquor is become sticky thickly emit cooling and make jasmine concrete.When vacuum decompression concentrated, the vacuum pressure gauge pressure was one kilogram of pressure, temperature control 45-52 ℃.
Jasmine concrete is added in 95% ethanol of low-grade fever through the low-grade fever dissolving, through stirring, leach impurity, then respectively in refrigerated tank at-10 ℃, 0 ℃, released curedly under-10 ℃ of three kinds of situations in condensation 1.5-2 hour, coarse filtration is separated, and enters the concentrating under reduced pressure pot by the suction filtration jar through vacuum filtration then, going out to steam jar ethanol 48-50 ℃ of vacuum decompression condition reclaims, vacuum pressure is controlled in 1 kilogram/cm, and the 60-65 ℃ of constant temperature that heats up then obtains jasmine absolute behind the time 15-20 minute removal moisture content.
Embodiment four:
Equipment retrofit:
1, the rubbing board formula fresh flower digester that solvent in the solute is taken away in homemade general Φ 1.5m steam direct injection heating changes the interlayer type of heating into, uses the seal for pipe joints heat-conducting oil heating, the cyclical operation heating.
2, the discharge port with Φ 1.5m rubbing board formula fresh flower digester is hinged with supporting closed type spiral pipeline thruster, the outer colored slag of the machine of giving off is moved up by propelling smoothly reclaim perfume extraction solvent in high position flower slag solvent recuperation tower apparatus.
Working method:
Through burst forth the bright flower of jasmine after releasing perfume (or spice) of pre-treatment, put in the digester after the rubbing board formula is reequiped, 500 kilograms of amounts of the every machine of loading capacity, with raw material: the ratio of solvent=1: 4 is put into perfume extraction solvent and is filled to machine volume 2/3 amount, starting step-down gear slowly moves fresh flower, emit vat liquor through lixiviate after 2 hours, pump is standby to basin.Digester is after tapping, and the band rotating blade makes colored slag flow out most of solvent recuperation through the drive limit of spiral propeller from discharge port discharge flower slag and scatters the perfume extraction solvent that distills recovery flower slag residue into colored slag solvent recovery tower then, recycle.
Vat liquor is reclaimed by the normal temperature and pressure jacketed kettle earlier that solvent oil makes it to be condensed into the solution that contains solvent oil 30% in rare vat liquor, the vacuum filtration jar of flowing through is then entered in the vacuum decompressioning and concentrating tank by vacuum filtration, through heat-conducting oil heating constant temperature behind the oil that reclaims whole fragrant flower solvents between 50-55 ℃, be warming up between 60-65 ℃, 15-20 minute recovery moisture content gets viscous fluid and emits, and naturally cooling is made jasmine concrete.
Jasmine concrete is through low-grade fever and the supercritical CO that pumps into simultaneously 2Fluid is mixed in the extraction kettle, extracts perfume oil, through 25-30 ℃ of pressure 9-13MPa of constant temperature, extracts and enters first, second separator after 1-1.5 hour, heats to discharge CO 2Gas pressurization is recovered into the loop and enters ice chest and recycle, and isolated thick oil is through rectifying fractionation water outlet, residual solvent and impurity and make jasmine absolute.

Claims (3)

1. the extracting method of a jasmine oil, comprise solvent extraction, extraction, spissated process, it is characterized in that: earlier Flower of Arabian Jasmine is obtained jasmine concrete with the lixiviate of No. 70 solvent oil adverse currents, obtain jasmine absolute with carbon dioxide upercritical fluid extraction again, concrete steps are as follows:
(1) after jasmine fresh flower flower bud is plucked, it is cool to loose earlier, placed 3-10 hour, treat that bud bursts forth when releasing perfume (or spice), in the digester of packing into, according to jasmine fresh flower raw material: the ratio of No. 70 solvent oil=1: 3.5-5, adverse current lixiviate extraction in digester, circulation repeatedly, the extraction time, leach liquor flowed out standby from digester after 1-3 hour;
(2) after leach liquor is all emitted digester, the pyritous thermal oil with being pumped in the digester interlayer, remaining in solvent in the colored slag by heat-conducting oil heating, recycle through cooling, Separation and Recovery to basin, the recovered temperature 70-85 of No. 70 solvent oils ℃, 90 minutes time;
(3) vat liquor is sent into heating No. 70 solvent oils of recovery under normal pressure in the Sealed sandwich pot after filtering, temperature is controlled between 80-85 ℃, after treating that No. 70 solvent oils the rate of recovery reaches 70% from vat liquor, move in the vacuum decompression jacketed kettle, be evaporated to till the whole recovery of solvent, be warming up to 60 ℃ then, remove moisture content, vat liquor is become sticky thickly emit cooling and make jasmine concrete;
(4) jasmine concrete pumps into supercritical CO simultaneously through the low-grade fever dissolved 2Fluid mixes and enters extraction, extraction perfume oil, and controlled temperature 25-30 ℃, pressure 9-13Mpa, first, second separator of immigration is heated and is discharged CO after time 1-2 hour 2Gas, loop enter the ice chest cycle applications, and isolated thick oil obtains jasmine absolute behind rectifying column fractionation water outlet and residual solvent and impurity.
2. the extracting method of jasmine oil according to claim 1 is characterized in that: the continuity operation of described leaching process employing raw material and No. 70 solvent oil countercurrent extraction.
3. the extracting method of jasmine oil according to claim 1 is characterized in that: lixiviate jar heat transfer unit (HTU) is to adopt the thermal oil heat-exchanger rig.
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