CN205473511U - Supersound - water conservancy of preparation chitosan oligosaccharides is in coordination with cavitation device - Google Patents
Supersound - water conservancy of preparation chitosan oligosaccharides is in coordination with cavitation device Download PDFInfo
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- CN205473511U CN205473511U CN201620096037.3U CN201620096037U CN205473511U CN 205473511 U CN205473511 U CN 205473511U CN 201620096037 U CN201620096037 U CN 201620096037U CN 205473511 U CN205473511 U CN 205473511U
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- ultrasonic
- hydrodynamic cavitation
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- cavitation
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Abstract
The utility model relates to a preparation chitosan oligosaccharides's supersound water conservancy is the cavitation device in coordination, including water bath with thermostatic control circulation tank, basin, pump, supersound the pipeline of hydrodynamic cavitation ware, transmission shell polysaccharide solution and install manometer, the valve on the pipeline, the pump pass through the pipeline respectively with basin, supersound hydrodynamic cavitation ware intercommunication, the supersound the hydrodynamic cavitation ware passes through pipeline and basin intercommunication, the supersound the hydrodynamic cavitation ware comprises ultrasonic transducer and hydrodynamic cavitation device, ultrasonic transducer extends income hydrodynamic cavitation device and produces the ultrasonic wave. Adopt the utility model discloses compare at least improvement with the current degradation rate that adopts hydrodynamic cavitation device ( venturi ) preparation chitosan oligosaccharides more than 70%, have characteristics such as simple accurate, energy consumption are low, efficient, the advantage that has extensive industrial application.
Description
Technical field
This utility model relates to a kind of ultrasonic-waterpower preparing oligo-chitosan and works in coordination with cavitation apparatus.
Background technology
The general chitosan molecule amount prepared by de-acetyl chitin is very big, and has close crystal structure, does not dissolves in
Usual vehicle, can only be dissolved in some acid medium, and this makes the application of chitosan be extremely limited.It addition, research
Show: the chitosan nature difference of different relative molecular masses is very big, the most even can show diametrically opposite characteristic, and shell gathers
Many specific function of sugar only are reduced to the most just show at relative molecular mass.Chitosan obtains through degraded
Low-molecular water-soluble chitosan, have uniqueness, superior physiologically active and physico-chemical property, have a wide range of applications field and open
Make an offer value, thus receive much attention.
At present, degradation of chitosan method mainly has chemical method, enzyme process and Physical.
(1) chemical method is to be degraded chitosan by the method for chemistry, mainly has: acid degradation method, NaNO2Degraded
Method, oxidation degradation method etc..Chemical degradative processes reacts bad control, relative molecular mass distribution width, easily environment is caused dirt
Dye, product colour is deeper.
(2) enzymic degradation is the method utilizing specificity or non-specific enzyme to degrade chitosan.Enzymatic degradation method drops
The relative molecular mass of solution preocess and catabolite is easily controlled, and directly carries out under the conditions of relatively mild, no
Needing to add other chemical reaction reagent, environmental pollution is few.But, the enzymic degradation cycle is long, and enzyme easily inactivates, production cost
Height, is the most also difficult to industrialization.
(3) physical degradation methods is presently mainly radiation method, microwave method, supercritical ultrasonics technology and Hydrodynamic cavitation method.Radiation degradation
Utilize radioactive ray degraded chitosan, but radiation degradation is the highest to equipment requirements, poisonous and harmful substance may be produced simultaneously.
Microwave method is to be degraded chitosan by microwave radiation, but microwave degradation chitosan the most still rests on intermittently operated,
It is difficult to continuous prodution.Chitosan is mainly degraded by ultrasonic degradation by ultrasound cavitation effect, its Degradation ten
Clearly demarcated aobvious, can get the most homogeneous low relative molecular mass chitosan, and sonication acid amount significantly reduces, after
Processing procedure is greatly simplified, and the pollution to environment is greatly reduced.But, due in total power consumption of ultrasonic cavitation, only 5%-
10% is used for cavitation effect, and remaining 90%-95% makes system heat up with the form of heat energy.This intensification not only causes the wave of energy
Take, be unfavorable for the process to heat-sensitive materials (the most biological, medical etc. industry) simultaneously；Another serious problems of ultrasonic cavitation,
Under the limited space conditions of laboratory and on a small scale small container, effect is preferable, but application is amplified to pilot-scale or more
Time extensive, arise that the most unstable function weakens phenomenon.Present applicant is being applied for not long ago and is being obtained specially
Profit number is the Chinese invention patent of ZL2010101787923, and this patent is to utilize equipment of Hydrodynamic Cavitation (Venturi tube) to prepare low
Chitosan, but in follow-up R&D process, it is found by the applicant that: Hydrodynamic cavitation degraded is crumbled and fall about by cavitation bubble
Produce localized hyperthermia and high pressure, and with there is strong shock wave and microjet, these physical conditions are chitosan in solution
Degraded provides a favourable physicochemical environment, it is achieved that make shell by free-radical oxidation, high temperature pyrolysis and supercritical water oxidation
Glycan molecule generation Degradation.But if the Hydrodynamic cavitation efficiency to chitosan can be improved further, have for energy-saving and cost-reducing
Important meaning.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of collaborative sky of ultrasonic-waterpower preparing oligo-chitosan
Gasifying device, utilize this device by chitosan solution itself ultrasonic-chitosan degraded by Hydrodynamic cavitation effect, has simplicity
Easy, energy consumption is low, efficiency high；There is the advantage of large-scale industrial application.
The technical scheme solving above-mentioned technical problem is: a kind of ultrasonic-waterpower preparing oligo-chitosan works in coordination with cavitation dress
Put, including water bath with thermostatic control cyclic water tank, basin, pump, ultrasonic-Hydrodynamic cavitation device, the pipeline of conveying chitosan solution and installation
Pressure gauge on pipeline, valve；Described pump is connected with basin, ultrasonic-Hydrodynamic cavitation device respectively by pipeline, ultrasonic-waterpower
Cavitation device is connected with basin by pipeline.
Further technical scheme of the present utility model: described ultrasonic-Hydrodynamic cavitation device is empty by ultrasonic transducer and waterpower
Gasifying device is constituted, and described ultrasonic transducer extends into equipment of Hydrodynamic Cavitation and produces ultrasound wave.
Further technical scheme of the present utility model: described equipment of Hydrodynamic Cavitation is to be made up of shell and orifice plate, orifice plate
Installing and shell is divided into reaction leading portion and reaction back segment in the enclosure, described reaction leading portion has material inlet, ultrasonic transduction
Device extends into reaction leading portion, and reaction back segment has material outlet.
Described orifice plate thickness is 1.6 ~ 5 with the ratio in aperture, and hole count is at least 1, ultrasonic transducer end face and orifice plate
Between distance H1 be 5 ~ 30mm.
Another further technical scheme of the present utility model: described equipment of Hydrodynamic Cavitation is Venturi tube, ultrasonic transduction
Device extends in Venturi tube.
Described Venturi tube is followed successively by entrance, contraction section, throat, diffuser and outlet section along Flow of Goods and Materials direction, enters
Mouth section has material inlet, and ultrasonic transducer extends in entrance, and contraction section angle [alpha] is 0.5 with the ratio of diffuser angle beta
~ 2, throat length L is 1.6 ~ 3.2 with the proportion of throat diameter d.
Distance H2 between ultrasonic transducer end face and venturi throat is 10 ~ 45mm.
A kind of ultrasonic-waterpower preparing oligo-chitosan of this utility model is worked in coordination with cavitation apparatus and is provided the benefit that: profit
With this utility model by high molecular weight chitosan is added solvent dissolves the chitosan solution itself made ultrasonic-waterpower is empty
Change effect and high molecular weight chitosan carried out degraded to prepare oligo-chitosan, have simple and easy to do, energy consumption is low, the high spy of efficiency
Point；Degradation rate of the present utility model has compared with the degradation rate that existing equipment of Hydrodynamic Cavitation (Venturi tube) prepares oligo-chitosan
Significantly improve, at least improve more than 70%, there is the advantage of large-scale industrial application.
Its principle is as follows: ultrasound wave and Hydrodynamic cavitation all can produce cavitation, and here, ultrasound wave is equivalent to one
High-frequency impulse cavitation field, Hydrodynamic cavitation is equivalent to a low frequency and continuous cavitation field.When the fluid of certain flow rate flows through Venturi tube
Time produce high shear relative motion and local depression, produced cavitation effect couple with ultrasonic pulse produced by superposition imitate
Should, making and suddenly and in large quantities produce gas core wink in fluid, then grow up and crumble and fall, two kinds of cavitation couplings are the most evident, increase largely
Cavitation intensity, makes cavitation energy, acoustic pressure, the sound intensity, efficiency be obtained for and significantly improves.
Accompanying drawing explanation
Ultrasonic-equipment of Hydrodynamic Cavitation the structural representation of Fig. 1: this utility model.
One of ultrasonic-Hydrodynamic cavitation device structural representation of Fig. 2: this utility model.
The AND DEWATERING FOR ORIFICE STRUCTURE schematic diagram of Fig. 3: this utility model.
The two of the ultrasonic-Hydrodynamic cavitation device structural representation of Fig. 4: this utility model.
In figure: 1-basin, 2-pump, 3-Pressure gauge, 4-is ultrasonic-Hydrodynamic cavitation device, 41-ultrasonic transducer, 42-shell,
421-material inlet, 43-orifice plate, 44-reacts back segment, the 45-section of answering leading portion, 46-Venturi tube, 461-entrance, and 462-shrinks
Section, 463-throat, 464-diffuser, 465-outlet section, 466-material inlet, 5-water bath with thermostatic control cyclic water tank, 6-valve.
Detailed description of the invention
Embodiment 1: a kind of ultrasonic-waterpower preparing oligo-chitosan works in coordination with cavitation apparatus, as it is shown in figure 1, include constant temperature
Water-bath cyclic water tank 5, basin 1, pump 2, ultrasonic-Hydrodynamic cavitation device 4, the conveying pipeline of chitosan solution and be arranged on pipeline
Pressure gauge 3, valve 6；Described pump is connected with basin 1, ultrasonic-Hydrodynamic cavitation device 4 respectively by pipeline, ultrasonic-Hydrodynamic cavitation
Device is connected with basin by pipeline；Described ultrasonic-Hydrodynamic cavitation device 4(is as shown in Fig. 2-Fig. 3) it is by ultrasonic transducer 41 and water
Power cavitation apparatus is constituted, and described ultrasonic transducer extends into equipment of Hydrodynamic Cavitation and produces ultrasound wave.Described equipment of Hydrodynamic Cavitation is
Being made up of shell 42 and orifice plate 43, orifice plate is installed and shell is divided into reaction leading portion 45 and reaction back segment 44 in the enclosure, described
Reaction leading portion has material inlet 421, and ultrasonic transducer extends into reaction leading portion, and reaction back segment has material outlet.Described
Orifice plate thickness is 1.6 ~ 5 with the ratio in aperture, and hole count is at least 1.Distance H1 between ultrasonic transducer end face and orifice plate is 5
~30mm。
Subordinate list 1: the geometrical parameters of orifice plate of embodiment 1 equipment of Hydrodynamic Cavitation.
Subordinate list 1 is only several embodiments of the plate size of embodiment 1 equipment of Hydrodynamic Cavitation, in actual application,
Suitable zooming in or out can be carried out according to practical situation.
Embodiment 2: a kind of ultrasonic-waterpower preparing oligo-chitosan works in coordination with cavitation apparatus, its basic structure and embodiment 1
Essentially identical, difference is: the structure of ultrasonic-Hydrodynamic cavitation device is different, the ultrasonic-Hydrodynamic cavitation device 4 described in the present embodiment
(as shown in Figure 4) being to be made up of ultrasonic transducer 41 and equipment of Hydrodynamic Cavitation, described ultrasonic transducer extends into Hydrodynamic cavitation dress
Buy property raw ultrasound wave.Described equipment of Hydrodynamic Cavitation is Venturi tube 46, and Venturi tube is followed successively by entrance along Flow of Goods and Materials direction
461, contraction section 462, throat 463, diffuser 464 and outlet section 465, entrance 461 has material inlet 466, ultrasonic transduction
Device extends in entrance, and contraction section angle [alpha] is 0.5 ~ 2 with the ratio of diffuser angle beta, throat length and the ratio of throat diameter
Example scope is 1.6 ~ 3.2.Distance H2 between ultrasonic transducer end face and venturi throat is 10 ~ 45mm.
Subordinate list 2: embodiment 2 Venturi tube geometric parameter.
Subordinate list 2 is only several embodiments of embodiment 2 equipment of Hydrodynamic Cavitation size, in actual application, Ke Yigen
Suitable zooming in or out is carried out according to practical situation.
Ultrasonic transducer type described in each embodiment of this utility model is not limited to piezoelectric ultrasonic transducer, mangneto is ultrasonic changes
Can device, air-media ultrasonic energy converter, focused transducer, fluid-dynamic type ultrasonic transducer, twisting vibration ultrasonic transducer, curved
Bent vibration ultrasonic transducer, detection ultrasonic transducer etc., it is also possible to be to meet to use the other types ultrasonic transducer required.
Chitosan solution carries out the technological process of ultrasonic-Hydrodynamic cavitation degraded in this utility model: chitosan is molten
Liquid is placed in basin, and carries out constant temperature by cyclic water tank, and chitosan solution is carried out by being pumped into ultrasonic-Hydrodynamic cavitation device
Cavitation technology, by valve regulated inlet pressure, and monitors pressure by Pressure gauge, the shell after ultrasonic-Hydrodynamic cavitation degraded
Polysaccharide solution is back in basin.
Contrast test: the method using Chinese patent ZL2010101787923, uses described in this utility model embodiment 1
Device (, under conditions of constructed parameter, degradation rate is essentially identical for the device of this utility model embodiment 1 and embodiment 2)
Doing contrast test with Venturi tube, concrete technological parameter and experimental result are as follows.
Contrast test 1: in degradation process, 40 ° of C, pH 4.4 of temperature, pressure 0.4 MPa, time 30 min, chitosan is molten
Liquid concentration is different, result of the test such as subordinate list 3.
Subordinate list 3: contrast test 1 result.
Contrast test 2: in degradation process, chitosan solution concentration 3g/L, pH 4.4, pressure 0.4 MPa, the time 30
Min, temperature is different, result of the test such as subordinate list 4.
Subordinate list 4: contrast test 2 result.
Contrast test 3: in degradation process, chitosan solution concentration 3g/L, 40 ° of C of temperature, pressure 0.4 MPa, the time 30
Min, pH are different, result of the test such as subordinate list 5.
Subordinate list 5: contrast test 3 result.
Contrast test 4: in degradation process, chitosan solution concentration 3g/L, 40 ° of C, pH 4.4 of temperature, time 30 min, pressure
Power is different, result of the test such as subordinate list 6.
Subordinate list 6: contrast test 4 result.
Contrast test 5: in degradation process, chitosan solution concentration 3g/L, 40 ° of C, pH 4.4 of temperature, pressure 0.4 MPa,
Time is different, result of the test such as subordinate list 7.
Subordinate list 7: contrast test 5 result.
From the result of above-mentioned contrast experiment it can be seen that degradation rate of the present utility model is (civilian with existing equipment of Hydrodynamic Cavitation
Venturi) to prepare the degradation rate of oligo-chitosan and compare and at least improve more than 70%, most cases can improve more than 80%, has
Sorrow of separation condition even can improve more than 200%.Visible, this utility model is prepared oligomeric with existing equipment of Hydrodynamic Cavitation (Venturi tube)
The method of chitosan is compared, and efficiency is substantially higher a lot.
Claims (7)
1. ultrasonic-the waterpower preparing oligo-chitosan works in coordination with cavitation apparatus, it is characterised in that: include water bath with thermostatic control recirculated water
Case (5), basin (1), pump (2), ultrasonic-Hydrodynamic cavitation device (4), the conveying pipeline of chitosan solution and be arranged on pipeline
Pressure gauge (3), valve (6)；Described pump is connected with basin (1), ultrasonic-Hydrodynamic cavitation device (4) respectively by pipeline, ultrasonic-water
Power cavitation device is connected with basin by pipeline.
A kind of ultrasonic-waterpower preparing oligo-chitosan the most according to claim 1 works in coordination with cavitation apparatus, and its feature exists
In: described ultrasonic-Hydrodynamic cavitation device (4) is to be made up of ultrasonic transducer (41) and equipment of Hydrodynamic Cavitation, described ultrasonic transducer
Extend into equipment of Hydrodynamic Cavitation and produce ultrasound wave.
A kind of ultrasonic-waterpower preparing oligo-chitosan the most according to claim 2 works in coordination with cavitation apparatus, and its feature exists
In: described equipment of Hydrodynamic Cavitation is to be made up of shell (42) and orifice plate (43), and orifice plate is installed and is divided into instead by shell in the enclosure
Answering leading portion (45) and reaction back segment (44), described reaction leading portion has material inlet (421), before ultrasonic transducer extends into reaction
Section, reaction back segment has material outlet.
A kind of ultrasonic-waterpower preparing oligo-chitosan the most according to claim 3 works in coordination with cavitation apparatus, and its feature exists
In: described orifice plate thickness is 1.6 ~ 5 with the ratio in aperture, and hole count is at least 1, between ultrasonic transducer end face and orifice plate
Distance H1 is 5 ~ 30mm.
A kind of ultrasonic-waterpower preparing oligo-chitosan the most according to claim 2 works in coordination with cavitation apparatus, and its feature exists
In: described equipment of Hydrodynamic Cavitation is Venturi tube (46), and ultrasonic transducer extends in Venturi tube.
A kind of ultrasonic-waterpower preparing oligo-chitosan the most according to claim 5 works in coordination with cavitation apparatus, and its feature exists
Entrance (461), contraction section (462), throat (463), diffuser it is followed successively by along Flow of Goods and Materials direction in: described Venturi tube
And outlet section (465) (464), entrance (461) has material inlet (466), and ultrasonic transducer extends in entrance, shrinks
Section angle [alpha] is 0.5 ~ 2 with the ratio of diffuser angle beta, and throat length L is 1.6 ~ 3.2 with the proportion of throat diameter d.
A kind of ultrasonic-waterpower preparing oligo-chitosan the most according to claim 6 works in coordination with cavitation apparatus, and its feature exists
In: distance H2 between ultrasonic transducer end face and venturi throat is 10 ~ 45mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620096037.3U CN205473511U (en) | 2016-01-29 | 2016-01-29 | Supersound - water conservancy of preparation chitosan oligosaccharides is in coordination with cavitation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620096037.3U CN205473511U (en) | 2016-01-29 | 2016-01-29 | Supersound - water conservancy of preparation chitosan oligosaccharides is in coordination with cavitation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109227396A (en) * | 2018-08-07 | 2019-01-18 | 太原理工大学 | Ultrasonic cavitation couples Hydrodynamic cavitation high efficiency dispersion Magnetorheological Polishing liquid circulating device |
| CN110433966A (en) * | 2019-08-15 | 2019-11-12 | 中国矿业大学 | A kind of waterpower-acoustic streaming cavitation microvesicle generators and working method |
-
2016
- 2016-01-29 CN CN201620096037.3U patent/CN205473511U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109227396A (en) * | 2018-08-07 | 2019-01-18 | 太原理工大学 | Ultrasonic cavitation couples Hydrodynamic cavitation high efficiency dispersion Magnetorheological Polishing liquid circulating device |
| CN109227396B (en) * | 2018-08-07 | 2020-08-07 | 太原理工大学 | Ultrasonic cavitation coupling hydrodynamic cavitation high-efficiency dispersion magnetorheological polishing solution circulating device |
| CN110433966A (en) * | 2019-08-15 | 2019-11-12 | 中国矿业大学 | A kind of waterpower-acoustic streaming cavitation microvesicle generators and working method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20190129 |