CN105903715B - The water wash system and method for washing of a kind of solvent method regenerated cellulose film and application - Google Patents
The water wash system and method for washing of a kind of solvent method regenerated cellulose film and application Download PDFInfo
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- CN105903715B CN105903715B CN201610230401.5A CN201610230401A CN105903715B CN 105903715 B CN105903715 B CN 105903715B CN 201610230401 A CN201610230401 A CN 201610230401A CN 105903715 B CN105903715 B CN 105903715B
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- 238000005406 washing Methods 0.000 title claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000002904 solvent Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000004627 regenerated cellulose Substances 0.000 title claims abstract description 11
- 229920002678 cellulose Polymers 0.000 claims abstract description 65
- 239000001913 cellulose Substances 0.000 claims abstract description 65
- 239000012528 membrane Substances 0.000 claims abstract description 59
- 239000007921 spray Substances 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 3
- 230000008676 import Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 238000010669 acid-base reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
- B08B3/123—Cleaning travelling work, e.g. webs, articles on a conveyor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/007—Heating the liquid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a kind of water wash system of solvent method regenerated cellulose film and method for washing and applications, water wash system includes several sequentially connected rinsing bowls, it is connected between adjacent rinsing bowl by flow structure, overflow direction between rinsing bowl is identical, cellulose membrane conveying device is set in rinsing bowl, and the overflow between the conveying direction and rinsing bowl of cellulose membrane is contrary；The outlet installation scraper and spray equipment of at least one rinsing bowl.(1) it is passed through clear water into the last one rinsing bowl, makes clear water by the overflow forward of the last one rinsing bowl, until in first rinsing bowl；(2) cellulose membrane being prepared is put into first rinsing bowl and is washed, entered second rinsing bowl after knife is scraped and is sprayed in the exit of first rinsing bowl after washing and washed；(3) cellulose membrane completes entire washing process according to the method in step (2).This method can effectively reduce the dosage of water, substantially increase washing efficiency.
Description
Technical field
The present invention relates to a kind of water wash system of solvent method regenerated cellulose film and method for washing and applications.
Background technique
Under the Environmental Protection Situation of current rigorous, although more and more wider, the industrial production institute of application of regenerated cellulose film
The traditional adhering process used is difficult to develop greatly because of tediously long complicated, the consumption height of production process, pollution.Utilize direct solvent
The new process for preparing regenerated cellulose film has the advantages that cleaning, efficient, worth progress industrialization development.1- allyl -3- first
Base imidazoles villaumite (AmimCl) ionic liquid is one of most effective cellulose direct solvent, and cellulose AmimCl solvent dissolves
By processes such as supersolidification film forming, washing, plasticizings, cellulose membrane is prepared.Since AmimCl molecular weight is higher, viscosity compared with
Greatly, therefore after cellulose film forming, a large amount of solvent needs prolonged washing that could thoroughly wash out in film.
Cellulose membrane mode of washing is that high temperature is inversely washed at present, i.e. the flow direction of the direction of motion of cellulose membrane and water
On the contrary, the washing bath of low concentration flows to the higher rinsing bowl of concentration by liquid level difference.Although realizing low concentration aqueous solution step by step
Enrichment, but washing efficiency is low, water consumption is big.In order to improve washing efficiency, 80-93 DEG C of washing temperature is generallyd use, is caused
Higher energy consumption.
Summary of the invention
The object of the present invention is to provide a kind of water wash system of solvent method regenerated cellulose film and method for washing and applications, should
Method can reduce the dosage and energy consumption of water, improve washing efficiency.
In order to solve the technical problems existing in the prior art, the technical solution of the present invention is as follows:
A kind of water wash system of solvent method regenerated cellulose film, including several sequentially connected rinsing bowls, adjacent washing
It being connected between slot by flow structure, the overflow direction between rinsing bowl is identical, cellulose membrane conveying device is set in rinsing bowl,
Overflow between the conveying direction and rinsing bowl of cellulose membrane is contrary；The outlet installation scraper of at least one rinsing bowl and spray
Shower device.
Cellulose membrane is struck off the solution carried on cellulose membrane with scraper when passing through the outlet of rinsing bowl, then with new water pair
Cellulose membrane carries out spray washing.After scraper is handled, solution is significantly reduced on cellulose membrane, reuses new water spray, right
Solvent on cellulose membrane plays biggish diluting effect, the concentration difference in increased fiber element film, outside film, be very beneficial for by
Solvent is washed out from film, improves washing efficiency, and the concentration of the rinsing bowl internal solvent is reduced with the addition of stylish water, is equally had
Conducive to the washing of cellulose membrane.
Preferably, ultrasonic wave generating apparatus is set in each rinsing bowl.
By the cavitation of ultrasonic wave, a large amount of microbubbles generated in tank liquid is enable to promote solution in rupture
The movement of molecule keeps the concentration difference inside and outside cellulose membrane to accelerate the mixing of solvent and water, accelerates solvent from film wash-in
Out, improve washing efficiency, so as to reduce residence time of the cellulose membrane in rinsing bowl, be conducive to improve operating speed or
Person shortens the length of rinsing bowl, while lower washing water temperature can be used, and reduces washing energy consumption.
The preparation method of cellulose membrane is viscose process at present, and this method is chemical method, and the use of ultrasonic wave is in film
Acid-base reaction and small molecule extending influence less in film, can not effectively improve detersive efficiency.Solvent method prepares cellulose
The method of film is physical method, and since AmimCl molecule is larger, the diffusion in cellulose membrane and water is slow compared with small molecule, ultrasonic wave
Use can dramatically speed up the movement of molecule, to effectively improve the efficiency of washing.Ultrasonic wave accelerates molecular motion
Effect is more significant than the method for increasing temperature, and energy consumption wants low.
Preferably, the flow structure is overflow weir or overflow pipe.
Preferably, the flow structure is overflow pipe, and the import of overflow pipe is arranged at setting height, the outlet of overflow pipe
The side wall of rinsing bowl is set on the position of washing trench bottom.
The overflow pipe of the structure can enter water in rinsing bowl from the bottom overflow of washing pipe, can play to washing bath
Good mixing effect, accelerates the mixing of washing bath, and the cellulose membrane larger phenomenon of solvent strength nearby has been effectively relieved, has increased
The concentration difference of solvent inside and outside cellulose membrane is conducive to improve washing effect.
Preferably, the number of rinsing bowl is 4-6.
In application of the above-mentioned water wash system in cellulose membrane washing, the especially washing of the cellulose membrane of solvent method preparation
Application.
Using above-mentioned water wash system to the washing methods of solvent method regenerated cellulose film, include the following steps:
(1) it is passed through clear water into the last one rinsing bowl, makes clear water by the overflow forward of the last one rinsing bowl, until first
In rinsing bowl；
(2) cellulose membrane being prepared is put into first rinsing bowl and is washed, at first after washing
The exit of rinsing bowl scrapes off the solution of cellulose membrane surface carrying with scraper, then enters second washing after carrying out spray washing
Slot is washed；
(3) cellulose membrane completes entire washing process according to the method in step (2).
Preferably, cellulose membrane carries out sonic oscillation washing in each rinsing bowl, and the frequency of ultrasonic wave is 40-
100kHz。
Preferably, in step (2), the temperature washed in each rinsing bowl is 30-70 DEG C.
Preferably, in step (2), the dosage of the washing clear water of cellulose membrane per ton is 10-15 tons.
Preferably, the rate that clear water is passed through in the last one rinsing bowl is 0.5m3/h-1.0m3/h。
Application of the above-mentioned washing methods in cellulose membrane washing, the especially washing in the cellulose membrane of solvent method preparation
In application.
Advantageous effects of the invention are as follows:
Cellulose membrane enters rinsing bowl after mold forms a film, and each rinsing bowl is connected to by overflow pipe, from the direction of motion of film
From the point of view of, each liquid level for washing trough inner water gradually rises, and clear water addition is carried out in the last one rinsing bowl, when the liquid in rinsing bowl
When position is more than the height of overflow pipe, then excessive water carries out next stage rinsing bowl by overflow pipe.By the liquid level difference of each rinsing bowl,
Water scouring water flows forward step by step, thereby realizes the enrichment step by step of solvent weak solution, and the solvent for foring higher concentration is molten
Liquid, the solution for taking full advantage of low concentration carry out the washing of cellulose membrane, greatly reduce the dosage of water, while the enrichment of solvent
Be conducive to carry out the recycling of solvent.
Cellulose membrane scrapes the weak solution carried on cellulose membrane by scraper when passing through the outlet of rinsing bowl, after striking off
Spray washing is carried out to cellulose membrane using new water.After scraper is handled, solution is significantly reduced on cellulose membrane, is reused new
Water spray plays biggish diluting effect to the solvent on cellulose membrane, and the film of cellulose is interior to form huge concentration with film outside
Difference is very beneficial for solvent and is precipitated from film, accelerates washing efficiency, and the addition with stylish water reduces the rinsing bowl internal solvent
Concentration, be equally beneficial for the precipitation of the solvent in cellulose membrane.
Ultrasonic oscillation equipment is installed in each rinsing bowl to be made micro- in tank liquid by the effect of ultrasonic wave
Bubble can keep vibration under the action of sound wave, be precipitated out of film to accelerate solvent, accelerate the aqueous solution in rinsing bowl
With the balance of film internal solvent, shorten residence time of the cellulose membrane in rinsing bowl, be conducive to operating speed raising or can
Shorten the length of rinsing bowl, at the same can the fluid temperature appropriate that reduced in each rinsing bowl, reduce the usage amount of steam.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1, drive roll, 2, scraper, 3, spray head, 4, rinsing bowl, 5, lower shaft, 6, overflow pipe, 7, ultrasonic generator.
Specific embodiment
The invention will be further described with specific embodiment with reference to the accompanying drawings of the specification.
As shown in Figure 1, a kind of water wash system of solvent method regenerated cellulose film, including several sequentially connected rinsing bowls
4, it is connected by flow structure between adjacent rinsing bowl 4, the overflow direction between rinsing bowl is identical, and cellulose is arranged in rinsing bowl
Film conveying device, the overflow between the conveying direction and rinsing bowl of cellulose membrane are contrary；Pacify the outlet of each rinsing bowl 4
Fill scraper 2 and spray equipment.
The flow structure can be overflow weir or overflow pipe 6, when flow structure is overflow weir, in the side wall of rinsing bowl 4
Setting height at be arranged overflow weir, when the liquid level in the rinsing bowl reaches the setting height, clear water by overflow weir inflow
In next rinsing bowl 4.When flow structure is overflow pipe 6, overflow pipe 6 can with overflow weir to open up mode identical, in water
Overflow pipe is installed, overflow pipe imports water from the upper end of rinsing bowl, or the open end of overflow pipe 6 is set at the setting height of washing trough
It sets at setting height, the lower end of 4 side wall of rinsing bowl is arranged in the outlet end of overflow pipe 6, and water is imported from the bottom of rinsing bowl 4
In next rinsing bowl.
Cellulose membrane conveying device includes being set to several drive rolls 1 of 4 upper end of rinsing bowl and being set to 4 lower end of rinsing bowl
Several lower shafts 5, drive roll 1 drive cellulose membrane moved, lower shaft 5 plays guiding role to cellulose membrane.Cellulose membrane
Under the action of drive roll 1 and lower shaft 1, left after being washed in the clear water of rinsing bowl 4.
The cellulose membrane sprayed from film-forming apparatus initially enters 1# rinsing bowl and is washed, and the solvent strength of the rinsing bowl is most
Height, higher due to just going out the film internal solvent of cellulose membrane of film-forming apparatus, the solvent weak solution of the rinsing bowl fully meets washing
It is required that.Water in the rinsing bowl largely comes from 2# rinsing bowl, and 2# rinsing bowl is connect by overflow pipe 6 with 1# slot, passes through liquid level
Difference in height enters 1# slot；Shower water of another fraction from spray head 3.Water in the final rinsing bowl by overflow pipe 6 into
Enter recovery system to be recycled.
2 sets of supersonic generators 7 are installed in rinsing bowl 4, accelerate the concentration of film internal solvent and rinsing bowl internal solvent weak solution
Balance improves washing efficiency, shortens washing process length.It can effectively reduce washing temperature simultaneously, reduce the usage amount of steam.It is fine
It ties up plain film and first passes around scraper processing after the washing of 1# slot, the weak solution of film surface is struck off, then using new water spray together
Enter 2# rinsing bowl after leaching system spray washing to be washed.And so on, until reaching the last one washing groove location (reality
Applying case is 5# rinsing bowl.In 5# rinsing bowl plus people supplements new water and carries out water washing operations, and the additional amount of new water is according in the slot
The concentration of solvent is determined, it is ensured that, the dissolvent residual of cellulose membrane conforms to quality requirements.It is first passed around after the completion of the washing of 5# slot
One of scraper strikes off film surface solution, using one of spray washing, then strikes off residual water at one of scraper of process, fine later
It ties up plain film and enters other operating units.
Washing methods of the invention, rinsing bowl be 5, the full width of cellulose membrane is almost the same, thus by length into
Row metering, the washing time of the cellulose membrane of per unit length are 60-100s, and the clear water amount that cellulose membrane washing per ton uses is
10-15 tons, that is, cellulose membrane internal solvent content may make to be reduced to 500ppm or less.The washing time of traditional fibre element film at present
For 156s-260s, the washing water consumption of cellulose membrane per ton is 20-27 tons, and rinsing bowl number is 13.As it can be seen that using this Shen
Washing methods please, not only can be improved working efficiency, can also save water resource, and due to not having to use high-temperature wash,
Heating fuel source can also be saved, is also reduced because of fuel combustion pollution on the environment, energy conservation and environmental protection.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not to invention protection scope
Limitation, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not required to
It is still within the scope of the present invention to make the creative labor the various modifications or changes that can be made.
Claims (3)
1. a kind of washing methods of solvent method regenerated cellulose film, it is characterised in that:
Following water wash system is used in the method comprising several sequentially connected rinsing bowls lead between adjacent rinsing bowl
Flow structure connection is crossed, the overflow direction between rinsing bowl is identical, and cellulose membrane conveying device, cellulose membrane are arranged in rinsing bowl
Conveying direction and rinsing bowl between overflow it is contrary；The outlet installation scraper and spray equipment of at least one rinsing bowl；
Supersonic oscillations equipment is set in each rinsing bowl；The flow structure is overflow pipe, and the import setting of overflow pipe is high in setting
At degree, the side wall of rinsing bowl is arranged on the position of bottom in the outlet of overflow pipe；
Described method includes following steps:
(1) it is passed through clear water into the last one rinsing bowl, makes clear water by the overflow forward of the last one rinsing bowl, until first washing
In slot；
(2) cellulose membrane being prepared is put into first rinsing bowl and is washed, washed after washing at first
The exit of slot scrapes off the solution of cellulose membrane surface carrying with scraper, then enter after spray washing second rinsing bowl into
Row washing；
(3) cellulose membrane completes entire washing process according to the method in step (2)；
The cellulose membrane carries out ultrasonic vibration washing in each rinsing bowl, and the frequency of ultrasonic vibration is 40-100kHz；Finally
The rate that clear water is passed through in one rinsing bowl is 0.5m3/h-1.0m3/h。
2. washing methods according to claim 1, it is characterised in that: the number of rinsing bowl is 4-6.
3. washing methods according to claim 1, it is characterised in that: in step (2), the temperature washed in each rinsing bowl
It is 30-70 DEG C；
Or in step (2), the dosage of the washing clear water of cellulose membrane per ton is 10-15 tons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610230401.5A CN105903715B (en) | 2016-04-14 | 2016-04-14 | The water wash system and method for washing of a kind of solvent method regenerated cellulose film and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610230401.5A CN105903715B (en) | 2016-04-14 | 2016-04-14 | The water wash system and method for washing of a kind of solvent method regenerated cellulose film and application |
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| CN105903715A CN105903715A (en) | 2016-08-31 |
| CN105903715B true CN105903715B (en) | 2019-06-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106423963A (en) * | 2016-09-26 | 2017-02-22 | 济南比能信电气有限公司 | Strip ultrasonic cleaner |
| CN106720142B (en) * | 2017-01-24 | 2022-12-06 | 潍坊潍森纤维新材料有限公司 | Cellulose casing production line and cellulose casing production process |
| CN107672102B (en) * | 2017-09-22 | 2019-06-18 | 浙江杭化新材料科技有限公司 | A kind of device and its application method preparing the graphene-based membrane material of plant cellulose suitable for method of reproduction |
| CN109382362A (en) * | 2018-11-21 | 2019-02-26 | 杭州中科氢能科技有限公司 | A kind of cleaning device |
| CN109794462B (en) * | 2019-03-21 | 2024-05-24 | 山东威高血液净化制品股份有限公司 | Multistage serial water washing device |
| CN113578686B (en) * | 2021-07-27 | 2023-07-18 | 中材锂膜有限公司 | Device for quickly adjusting concentration of solidifying and washing solution during diaphragm coating of lithium battery |
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| JP2006205138A (en) * | 2005-01-31 | 2006-08-10 | Akira Sato | Washing device, washing method, washing plant and washing process, using purified water |
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| CN105903715A (en) | 2016-08-31 |
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