CN106546067A - Bacterial cellulose gel film replaces low temperature integrated dry drying system - Google Patents
Bacterial cellulose gel film replaces low temperature integrated dry drying system Download PDFInfo
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- CN106546067A CN106546067A CN201510596535.4A CN201510596535A CN106546067A CN 106546067 A CN106546067 A CN 106546067A CN 201510596535 A CN201510596535 A CN 201510596535A CN 106546067 A CN106546067 A CN 106546067A
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Abstract
Present invention offer is a kind of can to enter the system that line replacement, low temperature integral type are dried to bacterial cellulose gel film, and which mainly includes：Drying chamber（1）With displacer hold-up tank（2）, the drying chamber（1）Top is provided with valvular gas outlet（3）, drying chamber（1）Bottom is provided with valvular outlet（4）With displacer entrance（5）, and electric heater unit（6）, the central shaft rod that can be removed is set at drying chamber axis（7）；The displacer hold-up tank（2）Top arranges displacer and reclaims entrance（8）, displacer hold-up tank（2）Bottom arranges displacer outlet（9）, the drying chamber（1）The valvular gas outlet of band on top（3）With displacer hold-up tank（2）The displacer on top reclaims entrance（8）Connected by conduit, the drying chamber（1）The displacer entrance of bottom（5）By with displacer hold-up tank（2）The displacer outlet of bottom（9）Connected by conduit.
Description
Technical field
The present invention relates to a kind of material drying system, replaces low temperature integrated dry drying system in particular to a kind of bacterial cellulose gel film.
Background technology
Bacterial cellulose is to be synthesized the biomaterial for obtaining by some microbial metabolisms, which has similar basic structure with native cellulose, but due to wherein not containing the association product such as lignin, hemicellulose, simultaneously with up to more than 95% degree of crystallinity and the up to high polymerization degree of 2000-8000, and there is the property of many uniquenesses, for example, which has outstanding mechanical performance, well higher biocompatibility, biodegradability etc..Which has widely application prospect in multiple technical fields.Bacterial cellulose obtains having very high-moisture bacterial cellulose gel film mainly by liquid culture medium static fermentation culture at present.But, in increasing application, need using substantially free of water drying bacteria cellulose membrane.Conventional drying meanss mainly have the modes such as hot-air drying, lyophilization, but high temperature and freezing inevitably produce impact to the space net structure of Bacterial cellulose, so as to affect many Wuli-Shili-Renli system approach of bacteria cellulose film, such as porosity, mechanical performance, electric conductivity etc..Although the Supercritical Drying Technology of rising in recent years can keep the space net structure of Bacterial cellulose to greatest extent, which is with high costs, and the requirement to equipment is very high, also rests on laboratory stage at present and industrially can not apply on a large scale.
The content of the invention
Present invention offer is a kind of can to enter the system that line replacement, low temperature integral type are dried to bacterial cellulose gel film, and which mainly includes：Drying chamber and displacer hold-up tank, the drying chamber top are provided with valvular gas outlet, and drying chamber bottom is provided with valvular outlet and displacer entrance, and electric heater unit, and the central shaft rod that can be removed is arranged at drying chamber axis；The displacer hold-up tank top arranges displacer and reclaims entrance, displacer hold-up tank bottom arranges displacer outlet, the valvular gas outlet of band on the drying chamber top is reclaimed entrance with the displacer on displacer hold-up tank top and is connected by conduit, and the displacer entrance of the drying chamber bottom is connected by conduit by the displacer outlet with displacer hold-up tank bottom.
In said system, on the side wall of drying chamber 1, transparent windows are also set up, to the position for observing liquid level.It is preferred which extends to is dried pot bottom.
In said system, whether the electric heater unit passes through temperature sensor and temperature regulating device is controlled, started by the temperature control heater in temperature sensor measurement drying chamber.
In said system, the valvular gas outlet of band on drying chamber top is reclaimed entrance with the displacer on displacer hold-up tank top and is connected by condenser and conduit.
In said system, the displacer entrance of drying chamber bottom is connected by pump and conduit by the displacer outlet with displacer hold-up tank bottom.Described pump can be bidirectional rotation.
Displacement low temperature integrated dry drying system provided by the present invention, can first pass through displacement drying technology and the moisture in bacterial cellulose gel film is cemented out with displacer, then displacer be removed from bacteria cellulose film by cold drying technology.Displacement drying is carried out completely at normal temperatures, and cold drying also only need to be carried out at 50-60 DEG C according to the species of displacer, therefore, it is possible to avoid the destruction of high temperature or freezing to bacteria cellulose film space net structure, improves the properties of drying bacteria cellulose membrane.In addition, displacement low temperature drying system provided by the present invention carries out can also the displacement drying and cold drying integral type in the same tank body, multiple equipment is not needed, Bacterial cellulose material is shifted repeatedly, displacer recycling can also be reclaimed, it is with low cost, simple to operate, have a good application prospect.
Description of the drawings
The following drawings is only intended to do schematic illustration and explanation with to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1 is the structural representation of the specific embodiment of the invention.
In figure：
1- drying chambers；2- displacer hold-up tanks；3- is with valvular gas outlet；4- is with valvular outlet；5- displacer entrances；6- electric heater units；7- central shaft rods；8- displacers reclaim entrance；9- displacers are exported；10- transparent windows；11- temperature sensors；12- temperature regulating devices；13- condensers；14- pumps.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is further elaborated.In following specific descriptions, only the present invention is described by way of explanation, and restriction effect is not played to which.Those of ordinary skill in the art can be modified to following concrete modes with various different modes, and which also should be within the scope of protection of the invention without departing from the spirit and scope of the invention.
As shown in Figure 1, in the bacterial cellulose gel film displacement low temperature integrated dry drying system that the present invention is provided, including drying chamber 1 and displacer hold-up tank 2,1 top of the drying chamber is provided with valvular gas outlet 3,1 bottom of drying chamber is provided with valvular outlet 4 and displacer entrance 5, and electric heater unit 6, the electric heater unit 6 passes through temperature sensor 11 and temperature regulating device 12 is controlled, and whether the temperature control heater 6 measured by temperature sensor 11 in drying chamber 1 starts.The central shaft rod 7 that can be removed is set at the drying chamber axis, its can remove after by aqueous bacterial cellulose gel film roll thereon after, then install back in drying chamber；2 top of displacer hold-up tank arranges displacer and reclaims entrance 8,2 bottom of displacer hold-up tank arranges displacer outlet 9, the valvular gas outlet 3 of band on 1 top of drying chamber is reclaimed entrance 8 with the displacer on 2 top of displacer hold-up tank and is connected by condenser 13, and the displacer entrance 5 of 1 bottom of drying chamber is connected by pump 14 by the displacer outlet 9 with 2 bottom of displacer hold-up tank.It is additionally provided with the side wall of the drying chamber 1 and extends to the transparent windows 10 for being dried pot bottom, to the position for observing liquid level.
Displacement low temperature integrated dry drying system working method of the present invention is as follows：
First, remove the central shaft rod 7 in drying chamber 1, by aqueous bacterial cellulose gel film roll in the central shaft rod 7, then installed back in drying chamber 1, the outlet 4 of the gas outlet 3, bottom on closing drying chamber top, displacer entrance 5 is opened, then the displacer in displacer hold-up tank 2 is pumped in drying chamber 1 by pump 14, when displacer liquid level is higher than bacterial cellulose gel film roll into drying chamber（Liquid level is observed by transparent windows）, stopping pumping into displacer and close displacer entrance 5, standing carries out Solvent exchange drying.Displacer can enter bacterial cellulose gel film in moisture therein be cemented out, and due to displacer it is lighter than water, therefore, the liquid in drying chamber occurs layering, and lower floor is water, and upper strata is displacer.After displacement drying is finished, the outlet 3 for opening 1 bottom of drying chamber releases waste water, after waste water is discharged（Contain displacer or level change is observed by transparent windows when in the liquid that observable is released）, close outlet 3, open displacer entrance 5, remaining displacer in drying chamber is pumped in displacer hold-up tank 2, after the completion of close displacer entrance 5.The gas outlet 3 on drying chamber top is opened again, start electric heater unit, and the temperature controlled by temperature sensor and temperature regulating device in drying chamber is slightly above the boiling point of displacer, make displacer become gaseous state and steam from gas outlet 3, and after condenser 13 is condensed, be back in displacer hold-up tank 2.
Claims (8)
1. a kind of bacterial cellulose gel film replaces low temperature integrated dry drying system, it is characterised in that mainly include：Drying chamber（1）With displacer hold-up tank（2）, the drying chamber（1）Top is provided with valvular gas outlet（3）, drying chamber（1）Bottom is provided with valvular outlet（4）With displacer entrance（5）, and electric heater unit（6）, the central shaft rod that can be removed is set at drying chamber axis（7）；The displacer hold-up tank（2）Top arranges displacer and reclaims entrance（8）, displacer hold-up tank（2）Bottom arranges displacer outlet（9）, the drying chamber（1）The valvular gas outlet of band on top（3）With displacer hold-up tank（2）The displacer on top reclaims entrance（8）Connected by conduit, the drying chamber（1）The displacer entrance of bottom（5）By with displacer hold-up tank（2）The displacer outlet of bottom（9）Connected by conduit.
2. system according to claim 1, it is characterised in that：Drying chamber（1）Side wall on be additionally provided with transparent windows（10）.
3. system according to claim 3, it is characterised in that：The transparent windows（10）Extend to and be dried pot bottom.
4. the system according to one of claim 1-3, it is characterised in that：The electric heater unit（6）Controlled by temperature sensor 11 and temperature regulating device 12.
5. the system according to one of claim 1-3, it is characterised in that：Drying chamber（1）The valvular gas outlet of band on top（3）Entrance is reclaimed with the displacer on 2 top of displacer hold-up tank（8）By condenser（13）Connect with conduit.
6. system according to claim 5, it is characterised in that：Drying chamber（1）The displacer entrance of bottom（5）By with displacer hold-up tank（2）The displacer outlet of bottom（9）By pump（14）Connect with conduit.
7. system according to claim 6, it is characterised in that：Described pump（14）It can be bidirectional rotation.
8. a kind of bacterial cellulose gel film replaces low temperature drying method, it is characterised in that：Usage right requires that the system described in any one of 1-7 enters line replacement cold drying to bacterial cellulose gel film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510596535.4A CN106546067B (en) | 2015-09-18 | 2015-09-18 | Low-temperature integrated drying method for replacing bacterial cellulose gel film |
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|---|---|---|---|
| CN201510596535.4A CN106546067B (en) | 2015-09-18 | 2015-09-18 | Low-temperature integrated drying method for replacing bacterial cellulose gel film |
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| CN106546067A true CN106546067A (en) | 2017-03-29 |
| CN106546067B CN106546067B (en) | 2022-08-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107930543A (en) * | 2017-12-28 | 2018-04-20 | 乐山职业技术学院 | A kind of solvent displacement for being used to prepare aeroge and the device and method of constant pressure and dry |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107930543A (en) * | 2017-12-28 | 2018-04-20 | 乐山职业技术学院 | A kind of solvent displacement for being used to prepare aeroge and the device and method of constant pressure and dry |
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| CN106546067B (en) | 2022-08-19 |
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