CN105249526A - Method for extracting tobacco aroma component through water jet comminution and entrainment-type microwave distillation - Google Patents
Method for extracting tobacco aroma component through water jet comminution and entrainment-type microwave distillation Download PDFInfo
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- CN105249526A CN105249526A CN201510732476.9A CN201510732476A CN105249526A CN 105249526 A CN105249526 A CN 105249526A CN 201510732476 A CN201510732476 A CN 201510732476A CN 105249526 A CN105249526 A CN 105249526A
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Abstract
The invention relates to a method for extracting a tobacco aroma component through water jet comminution and entrainment-type microwave distillation. The method comprises the following steps: S1, adding comminuted raw materials used for extraction of the tobacco aroma component into a stirring tank, adding water, stirring the mixture, and conveying the stirred mixture to a centrifugal separator; S2, conveying a heavy component separated out from the mixture to a water jet mill for water jet milling; S3, conveying a light component solution obtained in step S2 to a feed opening in the upper end of a continuous entrainment-type thin-material-layer microwave evaporation device, and then conveying the light component solution through a microwave resonant cavity in a horizontal back-and-forth and layer-by-layer rising manner, wherein an upper filter screen belt-solid/liquid mixed material layer-lower filter screen belt wafer material layer structure is formed through two filter screen belts; S4, sucking a gas-phase aroma-source substance together with steam into a condenser, condensing the gas-phase aroma-source substance together with steam into a liquid, and then separating the gas-phase aroma-source substance from condensation water by utilizing the separator, so as to obtain the liquid tobacco aroma component. The method is a pure physical method capable of extracting the high-quality tobacco aroma component through cell disruption and distillation.
Description
Technical field
The present invention relates to technical field of cigarette production, more particularly, relate to a kind of method of nappe flip length and strap-clamping-type microwave distillation extraction tobacco aroma component.
Background technology
Along with people are to the raising gradually of smoking and health problem attention rate, and continuing to increase public place ban on opium-smoking and the opium trade dynamics, tobacco industry is while enforcement reducing tar and reducing harm engineering, start to pay much attention to the novel tobacco goods research and development such as non-burning low temperature cigarette, electronic cigarette and buccal cigarette, and it can be used as the strategic, of overall importance of relation industry value chain and long-term key subjects to carry out.
Reducing tar and reducing harm engineering, tar content in cigarette is constantly reduced, and the fragrance component in tobacco is corresponding minimizing also, and smoke is thin out, affects the experience to smoking, therefore, needs from tobacco, extract aroma component and carries out effective compensation to low-coke tar cigarette fragrance; In novel tobacco goods are formed, this Studies of The Aromatic Substances of tobacco comprises smog matrix, forms the material that the peculiar fragrance of tobacco is indispensable, needs to extract aroma component from tobacco; On the other hand, in the reconstituted tobacco process of rising in recent years, by adding a part of this Studies of The Aromatic Substances of tobacco that tobacco endogenous spices is recovered damage, also need to extract aroma component from tobacco; In addition, by the extraction to tobacco aroma component, can fully utilize and dissolve a large amount of scrap, scarp, offal, tobacco cut produced in tobacco leaf accumulating and production of cigarettes process, and the appreciable discarded tobacco leaf abandoned every year in field, not only reduce discarded object to the pollution of environment, can turn waste into wealth again simultaneously.
The distinctive aroma component of tobacco is primarily of the Trace Volatile Organic Compounds composition of the tobaccos such as alcohols, aldehydes, ketone, ester class, acids, ethers, carbohydrate, terpenes, amino acids, alkaloid and the heterocyclic compound contained by it.These volatile organic matters normally with metabolite if cellulose, pectin, protein, hemicellulose etc. are for matrix, be distributed in tobacco plant cell and in cytoplasm, when stripping, must elder generation could discharge through cell membrane and cell membrane.But the xylem outside usually in herbaceous plant vascular bundle and the phloem tissue of inner side are comparatively closely, and make solvent not easily permeate and spread, the aroma component of tobacco is difficult to be efficiently extracted.
In order to effectively extract the aroma component of tobacco, first can carry out breaking-wall cell process to tobacco plant, so that these volatility fragrant source material can stripping smoothly in a solvent.
In order to realize tobacco plant cell broken wall object, in the art, various known method can be adopted: as, bioremediation, by biology enzyme or bacterium, the cell membrane to tobacco is degraded, and possible Problems existing is, alone biology enzyme often processes thorough, can only Partial digestion cell membrane; The alone bacterium processing time is longer, cell membrane is thoroughly cleared up and the metabolin of bacterium may affect the quality of fragrant source material, and the time is short and can not achieve the goal.
And for example, physical treatment method, makes breaking-wall cell by method sides such as ultrasonic wave, microwave, steam blastings.Wherein, supersonic cell broken wall is that the cavitation Erosion that utilizes high-frequency ultrasonic to produce in liquid and size degradation effect make cell membrane broken, and possible problem is limited to ultrasonic transducer power, and disposal ability is large not; When microwave frequency measurment is the plant medium microwave energy absorbing utilized in microwave field, because intracellular molecular polarization produces dipole Action of Superhigh Frequency Vibration, friction and heat-dissipating, when after the latent heat gasification that liquid phase scrubbing is enough, break through cell membrane disengaged vapor and reach breaking-wall cell object, possible problem is that the fragrant source material of tobacco plant is because of overheated and deteriorated; Steam blasting utilizes the steam with certain pressure to enter after in plant cell, and cause breaking-wall cell because unexpected pressure release makes steam discharge, possible problem remains overheated.Physical treatment method process intensity is large, and aroma component loss is larger.
For another example, chemical treatment method, mainly through process such as diluted acid, alkali, ozone, organic solvent and oxidations, make cell wall strength reduce or clear up, possible Problems existing is these chemical composition later stage reluctant problems.
Another kind of solvent extraction method, can under the condition not doing cell broken wall treatment, utilize material dissolubility difference in a solvent, namely select not needing dissolved element solubility little, and the solvent large to fragrant source Solubility of Substances, enter in cell by the osmosis of solvent to cell membrane, dissolve solubility fragrant source material, cause the concentration difference that cell is inside and outside, make intracellular concentrated solution constantly to external diffusion, solvent then constantly enters in cell, until when the inside and outside solution concentration of cell reaches dynamic equilibrium, saturated solution is leached, then adds novel solvent continuation stripping.Solvent can be the water of strong polarity, also can be hydrophily or lipophilic organic solvent.Solvent extraction method is divided into cold formulation and hot formulation two kinds, common solvent extraction method relative poor, and the time is long, and efficiency is lower, and aroma component relative amount is not high, and fragrance is not enough.
When cell makes fragrant source material dissolve in after in solvent because of broken wall or diffusion, then need the fragrant source material making liquid phase to separate from solvent further, namely distill extraction.In the art, various known method can be adopted: as, distillation is extracted, and utilizes each component boiling point (volatility) in mixing material different, low boiling component is evaporated, then is condensed into liquid to be separated whole component.Wherein, take water as the steam distillation of solvent, good economy performance, security are high, strong operability, and to water-soluble flavor matters such as carbohydrate, amino acids, phenols in tobacco, there is good extraction effect, but it is not good for crucial aroma component extraction effects such as low polarity, volatile organic acid, terpenes, alcohols, and needing higher evaporating temperature, side reaction is more, may affect this fragrant effect of aroma component.
And for example, supercritical fluid CO
2extraction, the superpower solvability utilizing supercritical fluid to have, makes fragrant source substance dissolves, and by the control of pressure and temperature, makes CO
2solvent reaches critical point in extraction process, completes the hypercritical transition of liquid phase to gas phase, and obtains the fragrant source material of liquid phase.The method purity is high, no solvent residue, is suitable for the extraction to the volatile aromatic composition of nonpolar or low pole mostly in tobacco, therefore has more application in this area.But the method treating capacity is lower, equipment investment is comparatively large, cost is higher, low to the aromatic substance extraction yield of low volatility.
Known by above-mentioned analysis, the key technology extracting aroma component from tobacco has 2 points, and one is, realizes breaking-wall cell; Two are, to the control of evaporating temperature when liquid-phase conversion is gas phase.The former is related to the dissolution rate of fragrant source material, and the latter is related to the quality of fragrant source material.
Tobacco is Solanaceae herbaceous plant, the tobacco-containing material that can be used for extracting tobacco aroma component is tobacco leaf and root, stem etc., wherein, tobacco leaf is by arranging flat epidermal cell closely, and the parenchyma cell such as the palisade tissue cell of mesophyll, spongy tissue cell and vascular bundle cell composition, there is collenchyma near epidermis; Rhizome is herbaceous stem stem, and gather in stem a lot of relatively tiny vascular bundle, and between injection vascular bundle is a large amount of parenchyma cells, and the xylem in vascular bundle is distributed in outside bast and is then distributed in inner side (this is just in time completely contrary with xylophyta).Therefore, as long as by the collenchyma of tobacco leaf epidermis, and the bast of xylem outside rhizome vascular bundle and inner side destroys, and the broken wall of parenchyma cell relatively easily realizes.
In the art, to the broken wall of tobacco plant cell, known method described above is the degradation by biology enzyme or bacterium, or passes through the physical wall breaking effect of ultrasonic wave, microwave, steam blasting, or is realized by the softening of soda acid solvent and the effect of clearing up.In these methods, tobacco material is usually crushed to and is less than 5 ~ 20 orders, and namely size is less than less than 4000 ~ 830 μm, and minority is also crushed to 100 orders, namely less than 150 μm.Obviously, the pulverizing size of these tobacco materials will much larger than the diameter of usual plant cell, i.e. the size range of 10 ~ 100 μm.Therefore, in existing tobacco aroma component extractive technique, to the pulverizing of tobacco material, the broken wall effect to cell is not produced.But by the degraded of above-mentioned biology enzyme or bacterium, or ultrasonic wave, microwave, steam blasting physical wall breaking, or make breaking-wall cell by the softening of soda acid solvent and the effect of clearing up, also the problem that corresponding cell technology for broken wall brings has been caused thus, as more weak in there is controllability, sporoderm-broken rate is not high, or temperature too high cause deterioration etc.
In the art, to the solution being dissolved with tobacco fragrant source material, carry out the evaporating temperature control aspect of gas phase conversion, in known method described above, take and comprise steam distillation, the measures such as normal-temperature distilled and decompression distillation, but " material of the same race has different saturated vapour pressures under not synthermal, and increase along with the rising of temperature, saturated vapour pressure value is higher, more be conducive to liquid phase and become gas phase " evaporating principle and fragrant source material " temperature is too high causes deterioration " of tobacco this to the coordination aspect of contradiction, mostly belong to conventional technological balance, the principle of relative shortage method and apparatus aspect breaks through.
The patent below quoted from wherein some method and apparatus aspect obtains certain success, but this can not to be interpreted as these existing technology be inevitably suitable.
The Chinese patent CN200610036630.X of the people such as Song Guangquan, discloses a kind of tobacco essence spices extracting method, comprises the steps: tobacco to pulverize or chopping, and puts into extractor; Be 1:2 ~ 1:16 by tobacco and solvent mass ratio, in extractor, add solvent; Be 20 ~ 60 DEG C in temperature, vacuum is the extract return method 1 ~ 8 hour of reducing pressure under 0.020 ~ 0.098MPa; Extract, through 80 ~ 500 order mesh screens or the separation such as titanium rod core or ultrafiltration, is collected filtrate, under vacuum is 0.020 ~ 0.098MPa, is evaporated to sample proportion d
4 20be 1.1 ~ 1.4g/ml, obtain tobacco essence spices.This invention have employed the closed circulating techniques such as low-temperature reduced-pressure liquid-solid extraction, gap flow stirring and reduced pressure concentration.
The Chinese patent CN200680027774.7 of Philip Mirris Products Inc, disclose a kind of method preparing solution containing tobacco solutes, comprise a kind of preferred extractant and supercritical fluid extraction tobacco solutes, to form the extractant and the poor tobacco containing tobacco solutes that are rich in tobacco solutes, the extractant being rich in tobacco solutes is rich in the solution forming tobacco solutes through entrapment solvent, wherein said tobacco solutes comprises nicotine and at least one tobacco flavor mixture and/or tobacco aroma compound.
The Chinese patent CN200810237438.6 of Sun De equality people, discloses the extracting process that a kind of tobacco sheets by paper making method is produced, and has following material and accounts for the percetage by weight of extract: acid protease 0.02% ~ 0.1% in extract; Cellulase 0.01% ~ 0.1%; Pectase 0.01% ~ 0.1%; Enzyme activity promoter 0.1% ~ 1%.Acid protease carries out liquid deep layer fermenting and post processing, uses homemade enzyme activity promoter simultaneously.
The Chinese patent CN200910027400.0 of the people such as yellow Wenhua, disclosing a kind of preparation method and application thereof of tobacco extract, take tobacco as raw material, obtains tobacco extract through enzymolysis, ultrasonic wave extraction, filtration, chromatographic column separation, reduced pressure concentration step; The ethanol of described tobacco extract concentration 80% dissolves, and adopts atomizing type spray to be added in pipe tobacco.This invention uses zymolysis technique and ultrasonic wave to extract, and in conjunction with chromatography, Extracting temperature is low, and the time is short, and solvent load is few.
The Chinese patent CN201110248504.1 of the people such as Wang Yuanliang, disclose one and utilize ultrasonic wave alkalization pretreatment continuous extraction nicotine, hemicellulose, lignin, cellulosic new method from tobacco, tobacco powder is broken into particle diameter and is no less than 20 object powder, add the aqueous medium being equivalent to tobacco volume 10 ~ 30 times, adjust ph is to 9-13, and carry out ultrasonic pretreatment, ultrasonic power is no less than 20kHz, ultrasonic pretreatment time is no less than 20 minutes, obtain ultrasonic pretreatment fluid, further extraction nicotine, hemicellulose, lignin, cellulose.
The Chinese patent application publication No. CN103126062A of the people such as Zhang Qi, disclose one to grow tobacco composition extracting method, comprise: (1) adds 5 ~ 15 times of non-polar organic solvents by weight in tobacco, stir, ultrasonic extraction 30 ~ 120 minutes, filtering, obtaining oil-soluble tobacco extracts by being separated the extract removing organic solvent obtained; (2) in the tobacco after step (1) separating and extracting liquid, 5 ~ 10 times of water are added by weight, stir, ultrasonic extraction 30 ~ 60 minutes, filter, obtaining water-soluble tobacco extracts by being separated the extract obtained except anhydrating, merging with the oil-soluble tobacco extracts of step (1).The method can extract the larger water-soluble components of polarity, also can extract the oil-soluble composition that polarity is less.
The vivid Chinese patent CN201310177314.4 waiting people of Yang Qian, discloses a kind of method and this fragrance applications of preparing tobacco aromatics with tobacco chippings.Utilize tobacco chippings as raw material, extracted by polar solvent and prepare tobacco extract, tobacco extract is mixed with macroreticular resin and carries out Static Adsorption, after separating treatment, obtain the latent fragrant component of not adsorbing, by obtaining the flavor components of absorption after intensive polar solvent wash-out macroreticular resin.
The Chinese patent application publication No. CN103462204A of the people such as Xu Qingquan, discloses one and comprises water extraction and supercritical CO
2the reconstituted tobacco of the compound tobacco flavor matter that extraction obtains, tobacco flavor matter is by the water extraction polarity flavor matter that orientation is extracted from tobacco and supercritical CO
2extraction directed nonpolar flavor matter extracted from tobacco is formed, and the formula rate of polarity flavor matter and nonpolar flavor matter is 1000:0.1 ~ 5.
The Chinese patent application publication No. CN103484252A of the people such as Pan Xuesong, disclose a kind of preparation method of Zimbabwe tobacco essential oil, extract is prepared as concentrated extract, glycerine is added again to concentrated extract, finally it is carried out to the step of decompression distillation, liquid-liquid extraction and concentrated precipitation, obtain faint yellow Zimbabwe tobacco essential oil.
The Chinese patent application publication No. CN103720031A of the people such as Tang Ziwen, disclose a kind of preparation method and the application of this extract in cigarette of tobacco extract, get tobacco material adds concentration 70% ~ 95% ethanol according to the ratio of feed liquid mass ratio 1:5 ~ 1:10, add phosphoric acid or the sulfuric acid of tobacco material quality 0.5% ~ 3% again, circumfluence distillation 1 ~ 3 hour under the condition of 60 ~ 90 DEG C; Products therefrom cools supernatant after filtering, gets supernatant reduced pressure concentration, obtains medicinal extract, is tobacco extract.
The Chinese patent application publication No. CN103789090A of the people such as Yang Yaling, disclose one grow tobacco colored volatile matter extract and microcapsule preparation method, tobacco is shredded, weighs, add a certain amount of saliferous distilled water solution, soak certain hour, steam distillation is extracted, and collects cut, obtains tobacco volatile matter.Add 95% ethanol dilution again, and add cyclodextrin and distilled water mixes, grind to form pastel, decompress filter with colloid mill, with absolute ethanol washing, the precipitation after suction filtration is dry.
The Chinese patent application publication No. CN104138028A of the people such as Qu Yongsheng, discloses a kind of tobacco flavor component extracting method, pipe tobacco or tobacco leaf is carried out Balance Treatment or dry process, makes sample moisture content even; By pipe tobacco or tobacco leaf, after putting into Extraction solvent dipping, cooling; Mixed liquor is put into Ultrasonic Cell Disruptor, utilizes ultrasonic grind pipe tobacco or tobacco leaf; After pulverizing pipe tobacco or tobacco leaf, airtight container, after continuing dipping, centrifugal segregation solid formation, namely obtains tobacco flavor constituents extraction liquid.
The Chinese patent application publication No. CN104450186A of the people such as Liu Xinjian, disclose the preparation method of a kind of tobacco juice for electronic smoke with this Studies of The Aromatic Substances of tobacco, waste/hypo-tobacco leaf is placed in ultrasound-enhanced supercritical extraction equipment to extract, ultrasonic frequency 20KHz, ultrasonic power 100W, carbon dioxide flow is 10 ~ 20L/h, extracting pressure is 15 ~ 25MPa, spend 40 ~ 55 DEG C, extraction time is 1.5 ~ 2h, entrainer is propane diols, ethanol, distilled water mixed solvent, obtained carbon dioxide and this Studies of The Aromatic Substances of tobacco mixed liquor, be separated through separating still again, control separation temperature 45 ~ 60 DEG C, separating pressure 7 ~ 12MPa, obtain this Studies of The Aromatic Substances of tobacco.
Known based on above analysis, in the art, still there is no a kind of wet grinding technique at present, its force mechanism pulverized not only has mill stripping and smashes effect, have the direct broken cells of stretching action concurrently simultaneously, and with the form of feed liquid rete, heated by microwave irradiation, carry out distilling the method extracting tobacco aroma component.Therefore, expect that providing a kind of makes tobacco plant cell obtain abundant broken wall by adopting the pulverizing force mechanism suitable to tobacco plant material, to improve the solubility of tobacco fragrant source material; Also expect to provide a kind of feed liquid for being dissolved with tobacco fragrant source material, utilization can be inverted the equal material refining layer transported continuously, with the motion mode of round rising in microwave cavity, under the bigger serface of multilayer, pass through microwave irradiation, the thinner bed of material is carried out to the vaporising device of body phase homogeneous heating, realize the high efficient cryogenic evaporation of tobacco aroma component.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of nappe flip length and strap-clamping-type microwave distillation to extract the method for tobacco aroma component, realizes the high quality tobacco aroma component of breaking-wall cell and distillation extraction with pure physical method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method constructing nappe flip length and strap-clamping-type microwave distillation extraction tobacco aroma component, comprises the following steps:
S1, the extraction raw material of tobacco aroma component after pulverizing is joined in agitator tank, add after water stirs and deliver to centrifugal separator;
S2, the heavy thing after being separated is delivered to water fluid jet grind and carries out nappe flip length;
S3, the light materials solution that described step S2 obtains is delivered to continuous strap-clamping-type thin bed of material microwave evaporation device upper end charge door, described microwave evaporation device adopts a pair pivotal pinch upper roll and pinch under roll, by two filter screen bands, by solidliquid mixture to being clipped between filter screen band, formed upper filter screen band, the solidliquid mixture bed of material and lower filter screen band to material folding Rotating fields, and come and go with level the transfer ways successively risen and pass through microwave cavity, make described to the solidliquid mixture feed liquid in material folding layer, microwave energy absorbing under thin uniform layer state and by heating evaporation;
S4, gas phase fragrant source material, with steam, is sucked and enters condenser, and be condensed into liquid together with water vapour; Again by separator make fragrant source material and condensed moisture from, obtain liquid tobacco aroma component.
In such scheme, water fluid jet grind is by the impact of high-pressure water jet, water wedge tension force, cavitation denudation, make the ultra-fine grinding granularity of tobacco leaf and the tobacco plant material such as root, stem reach average grain diameter and be about < 5 ~ l0 μm, the polar component being beneficial to fragrant source material is soluble in water, simultaneously, under the turbulent flow emulsification that high-pressure water jet is violent, nonpolar (oiliness or the fat) composition being also conducive to fragrant source material is soluble in water.
In such scheme, described water fluid jet grind and centrifugal separator, high-pressure plunger pump and delivery pump form closed-circuit pulverization and separating circuit, the heavy thing (containing coarse granule) that centrifugal separator is separated is returned the described water fluid jet grind for plant ultra-fine grinding, carries out continuous circulation pulverizing; By lightweight thing solution (containing fragrant source material and the fine tobacco plant particle) high-pressure plunger pump of making a gift to someone that centrifugal separator is separated, recycle as working media, until the subparticle in the described lightweight thing solution of centrifugal separator separation, granularity reaches average grain diameter when being about < 5 ~ l0 μm, described lightweight thing solution is switched out closed-circuit pulverization and separating circuit, and is transported to next stage and carries out vaporize draw.
In such scheme, described lightweight thing solution is from the cone of revolution video disc of the superiors, alternately flow in the process of undermost fixed axoid video disc, successively form even rete, period is heated Film Flow by microwave irradiation, eliminate the incremental contribution of heating steam to gas phase in evaporimeter, utilize the collaborative depressurization of the decompression of fluid speedup and vacuum draw simultaneously, feed liquid is made to be converted into gas phase at a lower temperature, fragrant source material in described lightweight thing solution is evaporated to gas phase, described heat exchange temperature is within the scope of 25 ~ 80 DEG C, and by the Loading Control of microwave pulse irradiation, evaporating temperature is controlled comparatively accurately.
In such scheme, by vacuum pump set, the gas phase fragrant source material that described continuous strap-clamping-type thin bed of material microwave evaporation device is evaporated, suction enters condenser and is condensed into liquid; Again by separator, make fragrant source material and condensed moisture from, obtain liquid tobacco aroma component, the vacuum of vacuum pump set is 0.035 ~ 0.095MPa.
In such scheme, by the extraction raw material of the tobacco aroma components such as tobacco leaf, root, stem, granularity < 10 order (1.7mm) is crushed to by plant pulverizer, join in agitator tank, again by solid-to-liquid ratio 1:(2 ~ 8) add water, impregnated raw material 30 ~ 60min at normal temperatures, period agitator with linear velocity 0.2 ~ 1m/s continuously or intermittent stirring; By the swelling good raw material of dipping, by slurry transferring transport pump to described centrifugal separator, the heavy thing after separation is transported to the described water fluid jet grind for plant ultra-fine grinding; Lightweight thing solution after separation, is transported to high-pressure plunger pump, recycles as working media.
In such scheme, in discharge adapter place of the described water fluid jet grind for plant ultra-fine grinding, separator is set, by the tobacco plant aroma volatile produced in nappe flip length process, directly be delivered to the condenser and separator that are arranged in described continuous strap-clamping-type thin bed of material microwave evaporation device back segment, trap in the lump with tobacco aroma component.
Implement the method for nappe flip length of the present invention and strap-clamping-type microwave distillation extraction tobacco aroma component, there is following beneficial effect:
The present invention carries out breaking-wall cell pulverizing by water fluid jet grind to tobacco plant, to improve the solubility of tobacco fragrant source material; And utilize continuous strap-clamping-type thin bed of material microwave evaporation device, make the solution high-efficiency evaporating being at a lower temperature dissolved with tobacco fragrant source material, finally by efficient condenser and oil water separator, prepare the high quality tobacco aroma component realizing breaking-wall cell and distillation extraction with pure physical method.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the method technological process exemplary schematic illustration that a kind of nappe flip length and strap-clamping-type microwave distillation extract tobacco aroma component;
Fig. 2 is the main pseudosection of continuous strap-clamping-type thin bed of material microwave evaporation device;
Fig. 3 is the side cutaway view of continuous strap-clamping-type thin bed of material microwave evaporation device;
Fig. 4 is the top view of continuous strap-clamping-type thin bed of material microwave evaporation device;
Fig. 5 is the main pseudosection in feeding structure local of Fig. 2 shown device;
Fig. 6 be Fig. 2 shown device upper and lower nip rolls and to material folding Rotating fields local main pseudosection;
Fig. 7 is the main pseudosection in discharging structure local of Fig. 1 shown device;
Fig. 8 is the main pseudosection of water fluid jet grind for plant ultra-fine grinding;
Fig. 9 is the top view of the water fluid jet grind for plant ultra-fine grinding;
Figure 10 is the A-A profile in Fig. 8;
Figure 11 is the main pseudosection of top charging hierarchy;
Figure 12 is the C direction view in Figure 11;
Figure 13 is the main pseudosection that lower nozzle pulverizes structure;
Figure 14 is the B direction view in Figure 13.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1, the method of tobacco aroma component is extracted in a kind of nappe flip length provided by the invention and the distillation of strap-clamping-type microwave temperature, its technological process and set device comprise: agitator tank 0101, tobacco slurry delivery pump 0102, high-pressure plunger pump 0103, for the water fluid jet grind 0104 of plant ultra-fine grinding, pulverize slurry transferring pump 0105, pulverize slip separator 0106, flow control valve 0107, centrifugal separator 0108, continuous strap-clamping-type thin bed of material microwave evaporation device 0109, condenser 0110, separator 0111, vacuum pump set 0112, handpiece Water Chilling Units 0113.
Method processing step and the main technologic parameters of described a kind of nappe flip length and strap-clamping-type microwave temperature distillation extraction tobacco aroma component are as follows:
Step 1: by the extraction raw material of the tobacco aroma components such as tobacco leaf, root, stem, granularity < 10 order (1.7mm) is crushed to by plant pulverizer, join in agitator tank 0101, again by solid-to-liquid ratio 1:(2 ~ 8) add water, impregnated raw material 30 ~ 60min at normal temperatures, period agitator with linear velocity 0.2 ~ 1m/s continuously or intermittent stirring; By the swelling good raw material of dipping, be delivered to centrifugal separator 0108 by tobacco slurry delivery pump 0102, the heavy thing (containing raw material coarse granule) after separation is transported to the described water fluid jet grind 0104 for plant ultra-fine grinding; Lightweight thing (containing fragrant source material and fine tobacco plant particle) solution after separation, is transferred people's high-pressure plunger pump 0103, recycles as working media.
Step 2: the heavy thing after separation is taken over via charging, enters the described tubular pulverizing chamber of flat ring for the water fluid jet grind 0104 of plant ultra-fine grinding, carries out nappe flip length, slurry after pulverizing, by pulverizing slurry transferring pump 0105, is sucked via discharge adapter and discharges the described water fluid jet grind 0104 for plant ultra-fine grinding, then is delivered to centrifugal separator 0108 and is separated, by this process, heavy thing after centrifugal separator 0108 is separated, by high-pressure plunger pump 0103, the described water fluid jet grind 0104 for plant ultra-fine grinding, centrifugal separator 0108 is with in the closed-circuit pulverization pulverizing the formation of slurry transferring pump 0105 and separating circuit, acquisition continuous circulation is pulverized, until the subparticle in light material liquid after being separated by centrifugal separator 0108, granularity reaches average grain diameter when being about the setting index of < 5 ~ l0 μm, by flow control valve 0107, light material liquid is switched out closed-circuit pulverization and separating circuit, and be transported into continuous strap-clamping-type thin bed of material microwave evaporation device 0109.
The pulverizing pressure of the nozzle of the described water fluid jet grind 0104 for plant ultra-fine grinding is 5 ~ 20MPa, preferably, 7 ~ 12MPa, the back pressure of the tubular crushing chamber of flat ring within the scope of 0.010 ~ 0.040MPa, preferably, 0.02 ~ 0.03MPa.
By pulverizing slip separator 0106, will directly be delivered to the condenser 0110 and separator 0111 trapping that are arranged in vaporising device back segment at the described escaping gas being used for producing in water fluid jet grind 0104 crushing process of plant ultra-fine grinding.
Step 3: the light material liquid obtained by step 2, be transported to described continuous strap-clamping-type thin bed of material microwave evaporation device 0109, by screw conveying feeding bed, with in revolution, pinch under roll is to being clipped between filter screen band, come and go with level the transfer ways successively risen and pass through microwave cavity, described light material liquid is with thin uniform layer state microwave energy absorbing, contained tobacco fragrant source material is made to be converted into gas phase at a lower temperature, heat exchange temperature is within the scope of 25 ~ 80 DEG C, and by the Loading Control of microwave pulse irradiation, evaporating temperature is controlled comparatively accurately.
The tobacco fragrant source material of gas phase, under the swabbing action of vacuum pump set 0112, discharge described continuous strap-clamping-type thin bed of material microwave evaporation device 0109 via upper end pump orifice, the vacuum of vacuum pump set 0112 is 0.035 ~ 0.095MPa.
Discharge the gas phase tobacco fragrant source material of described continuous strap-clamping-type thin bed of material microwave evaporation device 0109, be sucked and enter condenser 0110, and be condensed into liquid together with water vapour; Again by separator 0111, make the fragrant source material of tobacco and condensed moisture from, obtain the tobacco aroma component of liquid state.
Solution after described continuous strap-clamping-type thin bed of material microwave evaporation device 0109 evaporation and concentration, can be used as the raw material producing tobacco extract and is fully utilized.
Handpiece Water Chilling Units 0113 provides cooling fluid, chilling temperature scope 0.5 ~ 8 DEG C for condenser 0110.
The described water fluid jet grind for plant ultra-fine grinding and described continuous strap-clamping-type thin bed of material microwave evaporation device, and in extraction system, be configured with situ cleaning CIP device and the measure of steam high-temperature sterilization.
As shown in Fig. 2-Fig. 7, continuous strap-clamping-type thin bed of material microwave evaporation device 0109 comprises: boil-off gas discharge pipe 0901, infrared temperature measurement device 0902, evaporimeter upper cover 0903, carrying roller 0904, modified roller 0905, traction conveying roller 0906, upper filter screen band 0907, evaporator tube 0908, screw conveying feeding bed 0909, screw conveying feeding motor 09091, pinch upper roll 0910, pinch upper roll motor 09101, pinch under roll 0911, pinch under roll motor 09111, stone roller 0912, stone roller motor 09121, brush roll 0913, brushroll motor 09131, upper separate roller 0914, upper separate roller motor 09141, upper scraping plate 0915, lower separate roller 0916, lower separate roller motor 09161, lower scraping plate 0917, helical feed hopper 0918, lower filter screen band 0919, to material folding layer 0920, nozzle 0921, liquid collecting bucket 0922, circulation fluid drain connection 0923, microwave magnetron 0924.
As shown in Figure 2, Figure 3 and Figure 4, boil-off gas discharge pipe 0901 is arranged on the vertex of a cone center of evaporimeter upper cover 0903, by sealing flange or weld connection; Multiple infrared temperature measurement device 0902 is arranged on the folding face shape sidewall of evaporimeter upper cover 0903 and evaporator tube 0908, connected by flange and bolt seal, it is inner to evaporimeter that infrared measurement of temperature hot spot runs through evaporator tube 0908 through hole, the quantity of infrared temperature measurement device 0,902 5 ~ 9, the present embodiment is 5; Carrying roller 0904 is arranged on every layer of below to material folding layer 0920 stage casing, contacts with to the lower surface of material folding layer 0920, and the upper filter screen band 0907 of another horizontal direction and the below in lower filter screen band 0919 stage casing respectively arrange a carrying roller 0904; Modified roller 0905 has 2, wherein 1, is arranged on the position with pinch upper roll 0910 homonymy above evaporator tube 0908, and modified roller 0905 location portability position in the horizontal direction, is bolted, to adjust the tension force of upper filter screen band 0907.
Multiple traction conveying roller 0906 is arranged on every layer of both sides to material folding layer 0920, carries to make to alter course to material folding layer 0920, and load-bearing solidliquid mixture; Traction conveying roller 0906 roll surface has the stopper slot with pinch upper roll 0910 and pinch under roll 0911 roll surface locating slot same size and structure, to prevent material folding layer 0920 sideslip under transportation state; Stopper slot is along the width of roll surface axis direction, can according to the treating capacity of evaporimeter, selected within the scope of 500 ~ 5000mm, the present embodiment is 1600mm, the quantity of traction conveying roller 0906, can determine according to evaporator specifications, larger to specification, traction electric machine can be configured in traction conveying roller 0906, to improve the tension distribution of filter screen band, the present embodiment, arranges 10 traction conveying rollers 0906, and the traction conveying roller 0906 of the 6th from bottom to up configures traction electric machine.
Upper filter screen band 0907 and lower filter screen band 0919, it is respectively the band of filter screen for no reason that a width is slightly less than traction conveying roller 0906 roll surface stopper slot width 5 ~ 10mm, filter screen band is the nonmetallic materials of wave transparent, cotton as thin is weaved cotton cloth, or terylene filter cloth, terylene filter screen, nylon leaching net etc., the present embodiment is that cotton is weaved cotton cloth, and tape thickness λ scope is 0.5 ~ 2mm.
The basic configuration of evaporator tube 0908 is the rectangle housing of a setting, outer wall with structural steel frame structural strengthening, as microwave cavity, wherein, a pair of plummet direction side in opposite directions, can be designed to folding face shape, the angle β scope between folding face is 120 ° ~ 170 °, in the present embodiment, β=116.15 °, the refraction of microwave can be strengthened in these folding faces, is conducive to forming microwave resonance field, and wave field is evenly distributed; Whole evaporator tube 0908 is with low electric damage value microwave reflection metallic conductor, and as the material structure such as stainless steel, aluminium, in the present embodiment, be stainless steel SUS304, cylindrical shell height is 2950mm, width 2100/2500mm, thickness 2150mm.
Evaporator tube 0908, the diverse location place of two folding face shape outer walls, be provided with several microwave magnetron 0924 and multiple infrared temperature measurement device 0902, between microwave magnetron 0924 and infrared temperature measurement device 0902, by controlling with being coupled of pulsewidth and arteries and veins spacing of microwave pulse power supply, make heating using microwave evaporating temperature at 25 ~ 100 DEG C of operated within range of setting; The microwave magnetron 0924 of evaporator tube 0908 presents mouth place, closes with the polyfluortetraethylene plate of wave transparent.
The microwave frequency of magnetron 0924 can select 2450MHz, or 915MHz, when solidliquid mixture electricity damage value is comparatively large or evaporation capacity is larger, can matches 915MHz, generally match 2450MHz; Microwave rated power configures: 2450MHz, 5.4 ~ 50kW; 915MH, 20 ~ 120kW; In the present embodiment, the microwave frequency of magnetron 0924 is the magnetron of 2450MHz, 12 0.9kW, and the maximum rated power of configuration is 10.8kW, according to different solidliquid mixtures and treating capacity, and actual power adjustable.
Pinch upper roll 0910 and pinch under roll 0911, be arranged on the below of evaporator tube 0108, with screw conveying feeding bed 0909 homonymy, respectively by pinch upper roll motor 09101 and pinch under roll motor 09111 locking phase to driving, or shunt locking phase to driving by a motor via belt wheel, rotating speed is by servo or frequency conversion adjustment; Pinch upper roll 0910 and pinch under roll 0911 roll surface offer locating slot respectively, along the groove width of roll surface axis direction, can according to the treating capacity of evaporimeter, and selected within the scope of 500 ~ 5000mm, the present embodiment is 1600mm; Groove depth δ scope is 5 ~ 15mm, and the present embodiment is 10mm.
Stone roller 0912 is arranged on pivotal pinch upper roll 0910 and pinch under roll 0911 upstream end, and axis horizontal distance range is 200 ~ 600mm, and the present embodiment is 345mm; Stone roller 0912 is driven by stone roller motor 09121, and rotating speed is by servo or frequency conversion adjustment.
Screw conveying feeding bed 0909 is arranged on the top of stone roller 0912, the projection of the feed opening axis of symmetry of screw conveying feeding bed 0909 and the dead in line of stone roller 0912, the feed opening of screw conveying feeding bed 0909 along the width of axis, compared with the little 20 ~ 30mm of pinch upper roll 0910 roll surface locating slot groove width 500 ~ 5000mm value range; The feed opening of screw conveying feeding bed 0909 is along being 20 ~ 70mm to the width range of material folding layer 0920 throughput direction, and the present embodiment is 35mm; Gap between screw conveying feeding bed 0909 feed opening and stone roller 0912 roll surface, adjusted by the flashboard connecting electric pushrod, control range is 5 ~ 25mm, and the present embodiment is 12mm.
Screw conveying feeding bed 0909, pass through varying pitch, or become spiral shell gauge structure, and revolution speed of screw, solidliquid mixture is made to form certain material seal pressure in screw conveying feeding bed 0909, produce pressure reduction at charging aperture place, pressure differential range is 0.035 ~ 0.095MPa, to associate control by pressure sensor with helical feed servomotor or variable-frequency motor 09091; The feed hopper of screw conveying feeding bed 0909 is arranged on outside the microwave cavity of evaporator tube 0908; On the sidewall of the contiguous screw conveying feeding bed 0909 of evaporator tube 0908, arrange the observation window that can have an X-rayed, window material is anti-microwave leakage glass.
Upper separate roller 0914 and lower separate roller 0916, be arranged on the top of evaporator tube 0908, with helical feed hopper 0918 homonymy, respectively by upper separate roller motor 09141 and lower separate roller motor 09161 locking phase to driving, or shunt locking phase to driving by a motor via belt wheel, rotating speed is by servo or frequency conversion adjustment.
Upper scraping plate 0915 and lower scraping plate 0917 are separately positioned on the surface of separate roller 0914 and lower separate roller 0916, and contact with lower filter screen band 0919 with corresponding upper filter screen band 0907, contact force size is adjustable; Upper scraping plate 0915 and lower scraping plate 0917 material are polytetrafluoroethylene (PTFE).
Brush roll 0913 to be separately positioned on above separate roller 0914 and below lower separate roller 0916, and the bristle of brush roll 0913 is contacted along the bandwidth direction of upper filter screen band 0907 with lower filter screen band 0919 respectively; Brush roll 0913 is driven by brushroll motor 09131.
Helical feed hopper 0918 is arranged on the top of evaporator tube 0908, with upper separate roller 0914 homonymy, and upper scraping plate 0915 and lower scraping plate 0917 and brush roll 0913 are dissolved in wherein, what make to remove all falls into helical feed hopper 0918 to material folding layer 0920, the conveyor screw of its underpart passes through varying pitch, or become spiral shell gauge structure, and revolution speed of screw, make material in carrier pipe, form certain material envelope effect, pressure reduction is produced at discharge gate place, pressure differential range is 0.035 ~ 0.095MPa, controls by helical feed motor speed; On the sidewall of the evaporator tube 0908 corresponding with helical feed hopper 0918, arrange the observation access door that can have an X-rayed, window material is anti-microwave leakage glass.
Another 1 in modified roller 0905, be arranged on below evaporator tube 0908, with upper separate roller 0914 homonymy, modified roller 0905 location portability position in the horizontal direction, is bolted, to adjust the tension force of lower filter screen band 0919.
Nozzle 0921 is stratified and set on, with upper separate roller 0914 homonymy, the top of orlop and time lower floor's traction conveying roller 0906 roll surface, the liquid mist that nozzle 0921 is formed, evenly can be sprayed at the surface to material folding layer 0920, the feed liquid sprayed, by the compression pump of joining outward, extracts from liquid collecting bucket 0922 via circulation fluid drain connection 0923.
Upper separate roller 0914, lower separate roller 0916, traction conveying roller 0906, pinch upper roll 0910, the rotating speed of pinch under roll 0911 and stone roller 0912, by PLC or industrial computer integrating control, make the tension distribution of upper filter screen band 0907 and lower filter screen band 0919 even, and make upper filter screen band 0907 and lower filter screen band 0919, can respectively from separate roller 0914 and lower separate roller 0916, by modified roller 0905, successfully turn back to pinch upper roll 0910 and pinch under roll 0911, formed the clip-on circulation transport structure of solidliquid mixture.
As shown in Figure 8, water fluid jet grind 0108 for plant ultra-fine grinding comprises: top charging hierarchy 041, structure 042 is pulverized with lower nozzle, top charging hierarchy 041 and lower nozzle are pulverized structure 042 and are connected by bolt seal, and form the tubular crushing chamber 0424 of flat ring and blade classification impact ring 0414 structure, wherein, the tubular crushing chamber 0424 of flat ring comprises multiinjector and converges disintegrating area, and uniform nozzle multiple spot tangential impact disintegrating area.
As shown in Fig. 8 ~ Figure 14, the outer diameter of the tubular crushing chamber 0424 of flat ring is D0, the inner diameter of the tubular crushing chamber 0424 of flat ring is D1, feed opening 0415 center circle diameter is D2, lower substrate outside diameter is D3, it is D4 that ring 0414 internal diameter is impacted in blade classification, and charging adapter 0411 internal diameter is Din, and discharge adapter internal diameter is Dout.
As shown in Fig. 8 ~ Figure 12, top charging hierarchy 041, by charging adapter 0411, discharge adapter 0412, upper matrix 0413, ring 0414 is impacted in blade classification and feed opening 0415 is formed, wherein, blade classification impact ring 0414 is made up of convergence jet impact wall 0414a, uniform jet impact wall 0414b and tangential vane 0414c.
As shown in fig. 10 and fig. 12, charging adapter 0411 is connected by bolt seal with upper matrix 0413, and charging adapter 0411 position is determined by feed opening 0415 center circle diameter D2, D2=(0.80 ~ 0.87) × D0, preferably, and D=0.84D0; Charging adapter 0411 diameter Din=(0.2 ~ 0.4) × (D0-D1), preferably, Din=0.23 × (D0-D1), D0 span 300 ~ 1160mm.
As shown in Fig. 8, Figure 13 and Figure 14, the inner diameter of the tubular crushing chamber 0424 of flat ring is D1 is D1=(0.55 ~ 0.75) × D0, preferably, and D1=0.64D0.
As is illustrated by figs. 11 and 12, discharge adapter 0412 is positioned at the center of matrix 0413 circle, and with upper matrix by being welded to connect, discharge adapter 0412 diameter Dout=(0.12 ~ 0.16) × D0, preferably, Dout=0.13D0.
As shown in Figure 10, Figure 11 and Figure 12, it is overall structure that blade classification impacts ring 0414 with upper matrix 0413, and ring 0414 internal diameter D4=(0.45 ~ 0.65) × D0 is impacted in blade classification, preferably, and D4=0.54D0; The arc length angle 40 ° ~ 54 ° of the convergence jet impact wall 0414a on ring 0414 is impacted in blade classification, preferably, 48 °, and from there is the axis of different convergence nozzle 0423a, 0423b, 0423c and 0423d of cutting angle, touch low-angle tangent with wide-angle; The uniform jet impact wall 0414b that blade classification is impacted on ring 0414 is corresponding tangent with uniform nozzle 0423 axis, uniform jet impact wall 0414b arc length angle 16 ° ~ 20 °, preferably, and 18 °; Tangential vane 0414c on blade classification impact ring 0414 cuts angle 25 ° ~ 50 °, preferably, 30 °, tangential vane 0414c setting area arc length angle 42 °, the tangential vane 0414c setting area arc length angle 72 ° of next-door neighbour's feed opening 0415; Tangential vane 0414c height h=(2.8 ~ 3.5) × (D0-D1), preferably, h=3.1 × (D0-D1); The blade passage gap width of two alternate formations of tangential vane 0414c is 3 ~ 6mm, preferably, and 4mm.
As shown in Figure 10, Figure 13 and Figure 14, lower nozzle pulverizes structure 042, by nozzle plug 0421, annular high voltage water distribution room 0422, converge nozzle 0423a, 0423b, 0423c and 0423d, uniform nozzle 0423, and the tubular crushing chamber 0424 of flat ring, pressure sensor 0425, lower substrate 0426 and water under high pressure access tube 0427 are formed.
As shown in Figure 10, converging nozzle 0423a and horizontal axis angle is 10 ° ~ 20 °, preferably, 15 °, the neighbour angle between convergence nozzle 0423b, 0423c and 0423d be 17 ° ~ 25 ° preferably, 20 °; The β that cuts angle of uniform nozzle 0423 is 50 ° ~ 75 °, preferably, and 62 °; Converge nozzle and uniform nozzle, be connected in lower substrate 0422 by thread seal; Water under high pressure access tube 0427 is welded on lower substrate 0426 cylindrical sidewall, and communicates with annular high voltage water distribution room 0422.
As shown in Fig. 8 and Figure 14, the cross section of fluid channel size of the tubular crushing chamber 0424 of flat ring: width B=0.5 × (D0-D1), height H=(0.15 ~ 0.35) × (D0-D1), preferably, H=0.2 (D0-D1).
Convergence nozzle is 3 ~ 7 throat diameters is 0.7 ~ 2.5mm High pressure water jet nozzle, and preferably, convergence nozzle is 4 throat diameters is the High pressure water jet nozzle of 1mm; Multiple uniform nozzle is 4 ~ 9 throat diameters is the High pressure water jet nozzle of 0.7 ~ 2.5mm, and preferably, convergence nozzle is 4 throat diameters is 1mm High pressure water jet nozzle.
The pulverizing pressure of High pressure water jet nozzle is 5 ~ 30MPa, preferably, and 7 ~ 12MPa.
Discharge adapter is connected with suction pump, and swabbing pressure, by suction pump Serve Motor Control, makes the back pressure of the tubular crushing chamber of flat ring within the scope of 0.080 ~ 0.040MPa, preferably, within the scope of 0.02 ~ 0.03MPa.Because the described water fluid jet grind for plant ultra-fine grinding is working media with water, if in crushing process, from extraction system, supplement work Jie water continuously by high-pressure plunger pump, then can cause the too dilution of fragrant source material and affect distillation efficiency.To this, extraction system is configured with centrifugal separator, high-pressure plunger pump, the described water fluid jet grind for plant ultra-fine grinding, centrifugal separator and delivery pump is made to form closed-circuit pulverization and separating circuit, the heavy thing (containing coarse granule) that centrifugal separator is separated is returned the described water fluid jet grind for plant ultra-fine grinding, carries out continuous circulation pulverizing; By lightweight thing (containing fragrant source material and the fine tobacco plant particle) high-pressure plunger pump of making a gift to someone that centrifugal separator is separated, recycle as working media, until the granularity of lightweight thing that centrifugal separator is separated reaches average grain diameter when being about < 5 ~ l0 μm, be transported into heat exchanger preheating with the form of wet colloidal sol, then be admitted to continuous strap-clamping-type thin bed of material microwave evaporation device upper end charge door and carry out evaporation process.
The present invention utilizes the water fluid jet grind being used for plant ultra-fine grinding to carry out breaking-wall cell pulverizing to tobacco plant, to improve the solubility of tobacco fragrant source material; And utilize continuous strap-clamping-type thin bed of material microwave evaporation device, to the solidliquid mixture of tobacco fragrant source material be dissolved with to being clipped between filter screen band, come and go with level the transfer ways successively risen and pass through microwave cavity, solidliquid mixture feed liquid is with thin uniform layer state microwave energy absorbing, contained tobacco fragrant source material is evaporated at a lower temperature, simultaneously, by the loading again to segregation feed liquid, with circulating and evaporating, making the solution being dissolved with tobacco fragrant source material under lower vacuum, is gas phase by liquid-phase conversion.Further, by the special coupling technique for the described water fluid jet grind for plant ultra-fine grinding and described continuous strap-clamping-type thin bed of material microwave evaporation apparatus design and servicing unit configuration, a set of tobacco aroma component extraction system is formed.
By the described water fluid jet grind for plant ultra-fine grinding, by the extraction raw material of tobacco aroma component, i.e. tobacco leaf and root, stem etc., under the impact of high-pressure water jet and water wedge tension force and cavitation denudation, ultra-fine grinding to average grain diameter is about < 5 ~ l0 μm, make diameter about the cell wall damage of the various tobacco plant cell of 10 ~ 100 μm of size ranges, the polar component being not only conducive to fragrant source material is soluble in water, and under the violent turbulent flow emulsification of high-pressure water jet, also nonpolar (oiliness or the fat) composition being conducive to fragrant source material is soluble in water.
Because the described water fluid jet grind for plant ultra-fine grinding is working media with water, if in crushing process, from extraction system, supplement work Jie water continuously by high-pressure plunger pump, then can cause the too dilution of tobacco fragrant source material and affect distillation efficiency.To this, extraction system is configured with centrifugal separator, high-pressure plunger pump, the described water fluid jet grind for plant ultra-fine grinding, centrifugal separator and delivery pump is made to form closed-circuit pulverization and separating circuit, the heavy thing (containing coarse granule) that centrifugal separator is separated is returned the described water fluid jet grind for plant ultra-fine grinding, carries out continuous circulation pulverizing; Lightweight thing that centrifugal separator is separated (the solidliquid mixture feed liquid containing the fragrant source material of tobacco and fine tobacco plant particle) high-pressure plunger pump of making a gift to someone, recycle as working media, until the granularity of lightweight thing that centrifugal separator is separated reaches average grain diameter when being about < 5 ~ l0 μm, be transported into continuous strap-clamping-type thin bed of material microwave evaporation device with the form of solidliquid mixture feed liquid and carry out evaporation process.
Because plant granule size contained in work Jie water is small, and almost without abrasion, therefore the supercharging push rod wearing and tearing that high-pressure plunger pump is operation principle with simple linear re-ciprocating motion can not be caused, and doping contact scar is produced to solution.Water fluid jet grind heats up very little in crushing process, can not produce heat affecting to tobacco fragrant source material.
In nappe flip length process, some in tobacco plant are easy to the aroma type molecule of escaping from liquid phase, volatilization is produced due to the impact of high-pressure water jet and cavitation, therefore separator is set in discharge adapter place of the described water fluid jet grind for plant ultra-fine grinding, this part volatile aroma is directly delivered to the condensation and gas-liquid separation device that are arranged in vaporising device back segment, traps in the lump with tobacco aroma component.
Extract the tobacco leaf of raw material and root, stem etc. as tobacco aroma component, before the described water fluid jet grind for plant ultra-fine grinding is pulverized, first in agitator tank with water retting, string is produced certain swelling, the pulverizing so that water fluid jet grind is efficiently loosened.
By pulverizing a period of time breaking-wall cell of tobacco leaf and the raw material such as root, stem and the stripping process of fragrant source material, the heavy thing (containing coarse granule) be separated via centrifugal separator is admitted to filtering means dehydration device and carries out Separation of Solid and Liquid, the slag charge of gained can be fully utilized, as admixture of manufacturing paper with pulp as non-combustion type low-temperature cigarette sheathing paper, or as the carbonized stock etc. of non-combustion type low-temperature cigarette fuel element.
The continuous strap-clamping-type of described one thin bed of material microwave evaporation device, utilize pivotal pinch upper roll and pinch under roll, what formed clamping structure by upper filter screen band and lower filter screen band is inverted the even thin bed of material transported continuously, come and go the transfer ways successively risen with left and right in microwave cavity, under microwave irradiation, body phase homogeneous heating is carried out to the thin bed of material, and by the nozzle CYCLIC LOADING to segregation feed liquid, improves evaporation capacity.Liquid rete is thinner, faster by thermal evaporation, and evaporation capacity increases.Meanwhile, rete quantity is more, and specific area is larger, and evaporation capacity is also larger.
The continuous strap-clamping-type of described one thin bed of material microwave evaporation device, also by the hermetically-sealed construction of charging and discharging, improves the vacuum in evaporimeter, make feed liquid at a lower temperature Efficient Conversion be gas phase.Meanwhile, due to adopt multilayer transportation state to material folding layer, heat exchange specific area is increased, and vaporising device is compact, and area utilization is high.
Due to the mode of heating of microwave irradiation, instead of the heating steam directly imported in evaporimeter, gas phase in evaporimeter is only feed liquid and evaporates the escaping gas produced, eliminate the incremental contribution of water vapour to gas phase in evaporimeter, make evaporimeter under the swabbing action of vacuum pump set, also vacuum is made to significantly improve, contribute to reducing the pressure on thin bed of material gas-liquid interface, be beneficial to volatile component low-temperature evaporation within the scope of 25 ~ 80 DEG C, both the evaporation efficiency of feed liquid can have been improved, reduce the gas-liquid separation load of escaping gas subsequent condensation, also reduce possible heat effect excessively to the impact of volatile component quality.
Utilize in microwave heating process, thermal inertia be little, characteristic that controllability is good, by the pulsed irradiation Loading Control of microwave, evaporating temperature is controlled comparatively accurately, improves the quality of volatile component further.
Discharge the gas phase tobacco fragrant source material of described a kind of continuous strap-clamping-type thin bed of material microwave evaporation device, suction enters condensing unit and gas-liquid separation device, make the fragrant source material of tobacco and condensed moisture from, obtain the tobacco aroma component of liquid state.Condensation and gas-liquid separation can adopt high-efficiency condensation well known in the art and separator, as screw pipework condensation device, membrane separator, chromatographic column separator, macroreticular resin separator etc.
Solution after described a kind of continuous strap-clamping-type thin bed of material microwave evaporation device evaporation and concentration, owing to having the fragrant source material of low saturated vapour pressure value containing some, therefore can be used as the raw material producing tobacco extract and is fully utilized.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (10)
1. nappe flip length and strap-clamping-type microwave distillation extract a method for tobacco aroma component, it is characterized in that, comprise the following steps:
S1, the extraction raw material of tobacco aroma component after pulverizing is joined in agitator tank, add after water stirs and deliver to centrifugal separator;
S2, the heavy thing after being separated is delivered to water fluid jet grind and carries out nappe flip length;
S3, the light materials solution that described step S2 obtains is delivered to continuous strap-clamping-type thin bed of material microwave evaporation device, described microwave evaporation device adopts a pair pivotal pinch upper roll and pinch under roll, by two filter screen bands, by solidliquid mixture to being clipped between filter screen band, formed upper filter screen band, the solidliquid mixture bed of material and lower filter screen band to material folding Rotating fields, and come and go with level the transfer ways successively risen and pass through microwave cavity, make described to the solidliquid mixture feed liquid in material folding layer, microwave energy absorbing under thin uniform layer state and by heating evaporation;
S4, gas phase fragrant source material, with steam, is sucked and enters condenser, and be condensed into liquid together with water vapour; Again by separator make fragrant source material and condensed moisture from, obtain liquid tobacco aroma component.
2. nappe flip length according to claim 1 and strap-clamping-type microwave distillation extract the method for tobacco aroma component, it is characterized in that, in described step S2, high-pressure plunger pump, water fluid jet grind, centrifugal separator and pulverizing slurry transferring pump are connected to form closed-circuit pulverization and separating circuit, raw material in agitator tank, be delivered to centrifugal separator by tobacco slurry delivery pump, the heavy thing after separation is transported to water fluid jet grind; Lightweight thing solution after separation, is transferred people's high-pressure plunger pump, recycles as working media.
3. nappe flip length according to claim 2 and strap-clamping-type microwave distillation extract the method for tobacco aroma component, it is characterized in that, slurry after pulverizing obtains continuous circulation and pulverizes in closed-circuit pulverization and separating circuit, until when the subparticle granularity in lightweight thing solution after being separated by centrifugal separator reaches the setting index of average grain diameter, by flow control valve, lightweight thing solution is switched out closed-circuit pulverization and separating circuit, and be transported to the upper and lower nip rolls of microwave evaporation device to being clipped between filter screen band.
4. nappe flip length according to claim 1 and strap-clamping-type microwave distillation extract the method for tobacco aroma component, and it is characterized in that, the volatile aroma produced in described water fluid jet grind crushing process is delivered to the condenser being arranged in vaporising device back segment and traps.
5. nappe flip length according to claim 1 and strap-clamping-type microwave distillation extract the method for tobacco aroma component, and it is characterized in that, described condenser is connected with handpiece Water Chilling Units.
6. nappe flip length according to claim 1 and strap-clamping-type microwave distillation extract the method for tobacco aroma component, it is characterized in that, in described step S1, granularity < 10 order is crushed to by plant pulverizer, join in agitator tank, again by solid-to-liquid ratio 1:(2 ~ 8) add water, impregnated raw material 30 ~ 60min at normal temperatures, period agitator with linear velocity 0.2 ~ 1m/s continuously or intermittent stirring.
7. nappe flip length according to claim 1 and strap-clamping-type microwave distillation extract the method for tobacco aroma component, and it is characterized in that, in described step S3, in microwave evaporation device, lightweight thing solution is within the scope of 25 ~ 80 DEG C.
8. nappe flip length according to claim 1 and strap-clamping-type microwave distillation extract the method for tobacco aroma component, it is characterized in that, described continuous strap-clamping-type thin bed of material microwave evaporation device comprises evaporator tube, stone roller is provided with in described evaporator tube, pinch upper roll, the traction conveying roller that pinch under roll and multiple layering are crisscross arranged, upper filter screen band and lower filter screen band are set between pinch upper roll and pinch under roll, solidliquid mixture to be delivered between upper filter screen band and lower filter screen band and by pinch upper roll and pinch under roll pressing by institute's stone roller, described traction conveying roller drives upper filter screen band and lower filter screen band to carry in evaporator tube, described evaporator tube is provided with microwave heating equipment.
9. nappe flip length according to claim 8 and strap-clamping-type microwave distillation extract the method for tobacco aroma component, it is characterized in that, the top of described evaporator tube is provided with separate roller and lower separate roller, upper filter screen band and lower filter screen band upper separate roller and lower separate roller place separated, the side of described upper separate roller is provided with upper scraping plate, and the side of described lower separate roller is provided with lower scraping plate.
10. nappe flip length according to claim 8 and strap-clamping-type microwave distillation extract the method for tobacco aroma component, and it is characterized in that, described evaporator tube is connected with vacuum extractor.
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| CN104351944A (en) * | 2014-10-22 | 2015-02-18 | 浙江中烟工业有限责任公司 | Tobacco perfuming agent prepared through molecular distillation treatment of extractum obtained through Maillard reaction from inferior tobacco leaves, preparation method and application of tobacco perfuming agent |
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| JP2023503155A (en) * | 2019-11-27 | 2023-01-26 | 内蒙古昆明卷烟有限▲責▼任公司 | Method for producing tar extract from waste cigarette butts and its use in cigarettes |
| JP7338063B2 (en) | 2019-11-27 | 2023-09-04 | 内蒙古昆明卷烟有限▲責▼任公司 | Method for producing tar extract from waste cigarette butts and its use in cigarettes |
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