CN101754806A - Thin film treatment apparatus - Google Patents

Thin film treatment apparatus Download PDF

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Publication number
CN101754806A
CN101754806A CN200880021236A CN200880021236A CN101754806A CN 101754806 A CN101754806 A CN 101754806A CN 200880021236 A CN200880021236 A CN 200880021236A CN 200880021236 A CN200880021236 A CN 200880021236A CN 101754806 A CN101754806 A CN 101754806A
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CN
China
Prior art keywords
processing device
film processing
tooth
length
cellulose
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Pending
Application number
CN200880021236A
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Chinese (zh)
Inventor
W·费尔梅尔
C·施雷姆普夫
F·苏乔梅尔
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Lenzing AG
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Lenzing AG
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Application filed by Lenzing AG filed Critical Lenzing AG
Priority to CN201510384471.1A priority Critical patent/CN105148821A/en
Publication of CN101754806A publication Critical patent/CN101754806A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/1887—Stationary reactors having moving elements inside forming a thin film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
    • B01D1/222—In rotating vessels; vessels with movable parts
    • B01D1/223—In rotating vessels; vessels with movable parts containing a rotor
    • B01D1/225—In rotating vessels; vessels with movable parts containing a rotor with blades or scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F21/00—Dissolving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0721—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis parallel with respect to the rotating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01F27/05—Stirrers
    • B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/50—Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71775—Feed mechanisms characterised by the means for feeding the components to the mixer using helical screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/75455—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle
    • B01F35/754551—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle using helical screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J10/00—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor
    • B01J10/02—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor of the thin-film type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053—Details of the reactor
    • B01J19/0066—Stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/20—Stationary reactors having moving elements inside in the form of helices, e.g. screw reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/006—Processes utilising sub-atmospheric pressure; Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/003—Preparation of cellulose solutions, i.e. dopes, with different possible solvents, e.g. ionic liquids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
    • C08J3/096—Nitrogen containing compounds
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02—Starch; Degradation products thereof, e.g. dextrin
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • C08L5/04—Alginic acid; Derivatives thereof
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    • B01J2219/00049—Controlling or regulating processes
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    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
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    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00132—Controlling the temperature using electric heating or cooling elements
    • B01J2219/00135—Electric resistance heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00761—Details of the reactor
    • B01J2219/00763—Baffles
    • B01J2219/00779—Baffles attached to the stirring means
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    • B01J2219/19—Details relating to the geometry of the reactor
    • B01J2219/194—Details relating to the geometry of the reactor round
    • B01J2219/1941—Details relating to the geometry of the reactor round circular or disk-shaped
    • B01J2219/1943—Details relating to the geometry of the reactor round circular or disk-shaped cylindrical
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Abstract

The invention relates to a thin film treatment apparatus (8) comprising a rotor (16) having at least one cylindrical section (26), at least one wiping blade (32, 33, 34, 35, 36, 41) being arranged on said cylindrical section, said wiping blade comprising at least two teeth (42, 43, 44, 42', 43', 44'), which is characterized in that the thickness (T) of the wiping blade or the teeth (42,43,44,42',43 ',44'), respectively, is more than 5 mm.

Description

Film processing device
Technical field
The present invention relates to a kind of film processing device, it is suitable for making the cellulose solution in the aqueous organic solvent.Described equipment is particularly suitable for but is not limited only to make the cellulose solution that is used to produce regenerated celulose fibre (lyocellfibre).
Background technology
The production of regenerated cellulose is known technology.Mainly, the cellulose of slip form and water, be used for cellulosic organic solvent and stabilizing agent mixes.Under the effect of heating and decompression, a part of water evaporation is left, thereby produces the cellulose solution in the organic solvent, also comprises the water of remainder in this cellulose solution.The processing of weaving then of this solution, described thus solution is formed drip molding, is generally silk thread, handles described silk thread then with molten anhydrating property organic solvent, thereby deposits cellulose and thereby form cellulose forming spare.
The volume production fiber is the extensive product that uses, and the fiber production process production cost that must make fiber is with respect to having economic feasibility as the cellulose fibre of competing product (for example, cotton or rayolande or even staple fibre such as polyester fiber).
This means that described production process makes economically: for the manufacturing of regenerated celulose fibre, particularly volume production regenerated celulose fibre, the equipment that is used to produce solution need have the scale that can produce tens thousand of tons of solution amount per year.
Demand to the large-scale production fiber has caused adopting specific cellulose solution manufacturing process.In alternative technology, cellulose and water and/or organic solvent mix according to quantity, to realize direct dissolving.Yet this is difficult to carry out on a large scale.In another now business-like related to the present invention technology, described technology relates to the premix of making cellulose, stabilizing agent, excessive water and organic solvent, heats then and evaporates described excessive water to concentrate the organic solvent that allows cellulose dissolution.
The most successful form of producing the existing device of solution by this commercial process is the film processing device that is vertically oriented, for example, and the equipment of making and selling with trade mark Filmtruder by Buss AG.Disclose such film processing device in EP 0356419B1, the present invention also can be used for this equipment.In this open equipment, premix is pumped in the film processing device and downwards by inlet and transmits by film processing device, and aforesaid operations partly carries out under the gravity effect, but mainly promotes downwards to carry out by the conveying blade on the center rotor.The inner surface of film processing device is heated, and applies vacuum so that the excessive water evaporation is left.This has produced the cellulose solution in the aqueous solvent, and this cellulose solution is pumped out outside the film processing device by outlet.The preferred form of organic solvent is N-methylmorpholine N oxide (N-methyl morpholine N oxide), is abbreviated as NMMO usually.
Cellulose solution by film processing device production can be used for preparing polytype product.Major product by this cellulose solution manufacturing is a cellulose fibre.But, also can produce many other cellulosic materials, for example, film or sponge or pipe.
EP 0660743 discloses a kind of development of using film processing device producd fibers cellulose solution.Especially, this document relates to according to solution output and energy consumption and the process of EP 0356419 is optimized.
Open to further being modified among the WO 97/11973 of this known procedure.
Though must be noted that the increase of production capacity is self-explantory task for the engineering staff, but, there are some harsh restrictions for the scale of described technology (especially regenerated cellulose technology).This is because the cellulose solution that forms in film processing device has the character of heat release.Therefore, be difficult in the face of the exothermic reaction risk due to the system temperature rising, increase the production capacity of regenerated cellulose technology.
Summary of the invention
The objective of the invention is to, the use that is used to make cellulose solution, particularly makes the film processing device of cellulose solution with commercial scale is further improved.Therefore, further aim of the present invention is, a kind of improved film processing device that can be used for making cellulose solution is provided.
In first scheme, above-mentioned purpose is achieved by film processing device according to claim 1.The preferred embodiment of membrane according to the invention equipment is disclosed in the dependent claims.
The membrane according to the invention treatment facility comprises the rotor with at least one cylindrical section, at least one scraper blade is disposed on the described cylindrical section, described scraper blade comprises at least two teeth, it is characterized in that, the thickness T of described scraper blade or described tooth is respectively greater than 5mm.
Have surprisingly been found that by using blade or the tooth of corresponding minimum thickness T greater than 5mm, the production capacity of film processing device can significantly increase, and can not exceed way limit from the aspect of process safety simultaneously.
For thickness T, it should be understood that the respective thickness of the front of blade or tooth.Described front be blade with the face that processed material is contacted, it distributes on the inner surface of film processing device and carries material.
Thickness T can be preferably 17mm to 55mm greater than 11mm, is most preferably 22mm.
In the further embodiment of membrane according to the invention treatment facility, described tooth space separately forms the gap thus, and the length L of a tooth and the average ratio V between the length G in the gap that the vicinity of described tooth is located are correspondingly greater than 2: 1.
Have surprisingly been found that if increasing in the length L of the tooth on the blade on the film processing device and the average ratio V that is adjacent between the length G in gap of described tooth, then the production capacity of film processing device can significantly increase.
Particularly find,, can increase production capacity, and make the systematic parameter such as system temperature remain on acceptable level simultaneously from the process safety aspect by using the membrane according to the invention treatment facility.
EP 0660743B1 disclose the tooth that is positioned on the blade (it can take to have the form of the bar of integrated tooth) can comprise described vertical length 10% to 40%.This means that ratio V is significantly less than 2: 1.
It should be understood that for corresponding to be arranged in that the length L of tooth needn't be identical with ratio V between the length G of corresponding adjacent segment according to for all teeth and adjacent segment on the equipment of the present invention.
In one embodiment, for all teeth on being arranged in described equipment, ratio V can be higher than 2: 1.
In other embodiments, in some zone of described equipment, ratio V can be lower than 2: 1, and in other zone, ratio can be significantly higher.But importantly, the mean value of the ratio V that calculates according to all teeth that are positioned on the described equipment is higher than 2: 1.
According to a preferred embodiment of the invention, described average ratio V was preferably 3.3: 1 greater than 3: 1.Equally, for all teeth on being arranged in described equipment, ratio V can be preferably 3.3: 1 greater than 2: 1.
The length L of described tooth can be correspondingly in 40 to 200mm scope, and is preferably 90 to 110mm.
In the preferred embodiment of membrane according to the invention treatment facility, the described tooth of at least a portion forms the angle [alpha] towards vertical direction greater than 0 °, wherein, and the average angle α of all described teeth mLess than 14 °.
Be known that, particularly in order to prepare cellulose solution, the described tooth of at least a portion that is disposed on the film processing device can tilt, thereby forms the angle [alpha] towards vertical direction greater than 0 °, thereby forces material to be carried by described equipment downwards.
Have surprisingly been found that now, if the average angle α of all teeth mLess than 14 °, then the production capacity of film processing device can significantly increase, and can not exceed way limit from the aspect of process safety simultaneously.
For word " average angle ", its all teeth mean value of serving as reasons towards all angle [alpha] of vertical direction formation.
In one embodiment, all teeth of film processing device can tilt, thereby all angle [alpha] will be greater than 0 °.
In further preferred embodiment, only some tooth tilts.This means that a part of tooth forms 0 ° the angle towards vertical direction, and all the other teeth form the angle towards vertical direction greater than 0 °.So, average angle α mStill be the mean value of all angle [alpha].For example, if 50% tooth towards vertical direction tilt 26 ° of angles, then average angle α mTo be mean value, that is, and 13 °.
Preferably, average angle α mLess than 11 °, be preferably 10 °.
The membrane according to the invention treatment facility is particularly suited for being manufactured on by the cellulose suspension of water-based tertiary amino oxides (tertiaryamine oxide) the mouldable cellulose solution of described water-based tertiary amino oxides.
Description of drawings
Hereinafter, will the present invention be described in more detail by example and accompanying drawing.
Fig. 1 is the schematic cross sectional views according to system of the present invention.
Fig. 2 is the end-view at top of the rotor of system shown in Fig. 1.
Fig. 3 is a blade and the more detailed view that is connected of rotor.
Fig. 4 is the stereogram of the structure of Fig. 3.
Fig. 5 is the view of the part of the rotor of film processing device according to the preferred embodiment of the invention.
Fig. 6 is that example illustrates the schematic plan of the exemplary shape of the rotor blade of film processing device according to the preferred embodiment of the invention.
Fig. 7 is the blade tooth ratio V that demonstrates film processing device for the figure line than the influence of output.
Fig. 8 is the average angle α m that demonstrates film processing device for the figure line than the influence of output.
Fig. 9 is the vane thickness T that demonstrates film processing device for the figure line than the influence of output.
The specific embodiment
Referring to Fig. 1, its system that schematically shows out is used for carrying out the process of the cellulose solution that forms the tertiary amine N oxide.
The tertiary amine N oxide, N-methylmorpholine N oxide for example, road 2 along the line is supplied in the container 1.But also cellulose supply circuit 3 and water supply circuit 4 are provided.Usually, generally include by these components are mixed the premix that forms: percentage by weight is 12% cellulose, and percentage by weight is that 20% water and percentage by weight are 68% N-methylmorpholine N oxide.Utilization is by the helical blade 5 of electro-motor 6 rotations, and these three kinds of components are mixed in container 1.Helical blade stirs mixture, and mixed component is delivered on the whole by 8 film processing devices of representing along pipeline 7.Described pipeline preferably has makes its diameter that always is filled, and perhaps can provide limiting structure in described pipeline feeds the outlet of film processing device, makes material in the pipeline 7 can not be exposed to the vacuum in the treatment facility 8.
Film processing device 8 comprises the rotor that is in the cylindrical component 9, and cylindrical component 9 utilizes heating element heater 10 to be heated in the outside.Heating element heater can be electrical heating elements or oil-filled element or fills steam completely or fill the heating jacket of hot water.There is the tapered portion 11 of guiding drain line 12 in lower end at cylindrical section 9.
There is the supply chamber 13 that is provided with discharge conduit 14 in upper end at cylindrical section 9, can remove the steam of evaporation by discharging conduit 14.Material after the premixed is admitted in the chamber 13 by pipeline 7, and centers on the film processing device distribution by distribution plate 15 when being rotated by 16 rotors of representing on the whole.
Utilize outside electro-motor 17 to make the central shaft rotation of rotor 16.
Rotor 16 is provided with a series of blades 18, and these blades 18 will be described in more detail hereinafter.In operation, lower pressure is put in the conduit 14, thus, when utilizing heating element heater 10 to add hot premix, water is evaporated in the operating process of film processing device, thereby reduces its water content when premix is heated.
This continuous heating and evaporation cause water in the premix, and (that is, non-solvent) component is reduced to a certain degree, makes cellulose form the real solution in the tertiary amine N oxide.
Therefore, be formed with viscosity solution in the lower part of film processing device 8, viscosity solution is pushed downwards by the dihedral vane on the cone-shaped component 20 19 in the neck at bottom place of tapered portion 11 of film processing device.By the rotation of spiral component 21, the cellulose solution in the solvent is sent to the pump 22 that is driven by electro-motor 23.Thus, solution is sent to weaving nozzle 25 by being fit to pipeline configuration.
Spiral component 21 utilizes electro-motor 26 ' be rotated, to electro-motor 26 ' control combine with the flow of solution of control with control by system to electro-motor 6 and 17.
Fig. 2 to 4 is more detailed to demonstrate among Fig. 1 on the whole structure with 16 illustrative rotors.As seen, rotor comprises cylindricality core 26 from Fig. 2 and 3, and cylindricality core 26 has the tapered conical part in its lower end.Cylindrical section has end plaste 28 in the top, and the rotating shaft of motor 15 is connected to end plaste 28.
Rotor center part 26 is essentially hollow cylinder, and hollow cylinder has on the whole from the parallel root of blade of its outstanding a series of (for example being six) (for example 29,30).These roots of blade extend the length of rotor center part 26.
Root of blade is soldered to the rotor center zone and forms the integration section in rotor center zone.
The a series of plates 31,32,33,34,35 and 36 that form the actual blade of film processing device are bolted to described root, and for example root 30.Shown in clearer among Fig. 3, vane plate 38 utilizes conventional bolt 40 to be bolted to root of blade 39.As shown in Figure 4, vane plate 41 has a series of tooth members 42,43,44 and 45 of the distal edge that extends to vane plate 41, and vane plate 41 utilizes bolt 47,48 and 49 to be secured to root of blade 46.
Blade tooth 42 to 45 can be tilt so that viscosity premix and viscosity solution are promoted to pass through film processing device downwards.Because the rotor 16 of film processing device 8 is with vertical deployment arrangements, therefore, the dihedral vane effect combines with the gravity effect and passes through treatment facility to promote premix and solution to move down.
Fig. 5 schematic illustration goes out the preferred embodiments of the present invention, referring to two adjacent blades, 41,35 (not shown), be furnished with respectively on it tooth 42,43,44 and tooth 42 ', 43 ', 44 '.
According to the embodiment shown in Fig. 5, a part of tooth is along being vertically oriented (that is, tooth 42,43,44), and another part tooth (that is, and tooth 42 ', 43 ', 44 ') tilt towards vertical direction, form angle [alpha] thus greater than 0 °.
Each tooth have length L (as among Fig. 5 respectively for tooth 42 and 42 ' shown in).For realizing purpose of the present invention, for the tooth that tilts, length L be meant tooth the length of the projection on the plumb line (as among Fig. 5 for tooth 42 ' shown in).
Adjacent tooth, tooth 42 and 43 for example, the space separately forms clearance G thus.The ratio of tine length L and gap length G is ratio V.According to a preferred embodiment of the invention, for all teeth and adjacent segment on being positioned at the rotor cylindrical section, average ratio V should be correspondingly greater than 2: 1.
And, according to a preferred embodiment of the invention, as the mean value of the angle [alpha] of all teeth (comprising the tooth that does not tilt), average angle α mShould be less than 11 °.
Fig. 6 schematic illustration goes out the shape of the embodiment of tooth 42.Tooth 42 has front 42a, front 42a with processed material is contacted and on the inner surface of cylindrical section 9, distributes and carry material.The inner surface that front 42a is roughly parallel to cylindrical section 9 extends.
According to a preferred embodiment of the invention, the front 42a of tooth presents thickness T, and thickness T should be greater than 5mm.
Example:
The production capacity of film processing device especially is subject to two factors:
1) the maximum circumferential speed of blade;
2) maximum temperature in the equipment (measuring) at the cover place.
In exemplary film processing device, the factor 1) (that is maximum circumferential speed) can have the value of about 7m/s.
Maximum temperature (factor 2)) should be no more than 160 ℃, to avoid taking place the risk of exothermic reaction.
The product of these two values (it will be called as maximum " the F factor " hereinafter) defines the scope that production capacity increases.That is, under the situation of the exothermic reaction that does not reach technological limit or do not cause danger, production capacity is increased to be higher than this product value.
About this example, the factor 1) and 2) product, that is, maximum " the F factor " is 1120 ℃ of m/s.
Example 1:
This example adopts and to have eight blades the (film processing device of rotor of thickness T=11mm).Described equipment is used for cellulose suspension with water-based NMMO and is treated to and has 13% cellulosic cellulose solution.
In comparative example, the length of the tooth of arranging on the blade correspondingly is 62mm.The length that is adjacent to the gap of described tooth correspondingly is 31mm.That is, average ratio V is 2: 1.
In example according to the present invention, the length of tooth is 102mm, and that the length in gap remains 31mm is constant.That is, average ratio V is 3.3.
In order to realize the purpose of this example, word " length " is meant the actual face length degree of tooth.For the tooth of inclination used in the equipment, its projected length on plumb line only is different from actual face length degree slightly, and thereby can not change average ratio V.
By regulating the temperature of circumferential speed and/or film processing device heating jacket, set different operating points.These operating points and specific ratio output (every m 2What the equipment list area was produced is the fiber of unit with kg/d, wherein based on 11% water content; This be meant can be by the cellulose solution of producing by described equipment the amount of spun fiber) relevant.
Measure the F factor, the F factor is based upon and realizes the necessary treatment conditions of specific output (circumferential speed and temperature).
Experimental result is summarised in the following table:
Figure G2008800212366D00081
By last table and as seen from Figure 7, only be that the equipment of 2: 1 (the F factor 983.8) is compared with ratio V, use to have higher rate V (V=3.3: film processing device 1) can be implemented under the much lower F factor (891.9) with 1750kg/d.m 2Ratio output produce.
For Fig. 7, further visiblely be, if, only be the 1940kg/d.m of 2: 1 film processing device then with V to extrapolating with respect to figure line than the substantially linear that drawing obtained of output by the F factor 2Compare, usage rate V is that 3.3: 1 film processing device can obtain 2390kg/d.m 2Maximum production, wherein surpass 1120 ℃ of m/s of the maximum F factor.
Example 2:
Its experiment be provided with example 1 in identical, its difference is:
In comparative example, the length of the tooth of arranging on the blade correspondingly is 62mm.The length that is adjacent to the gap of described tooth correspondingly is 31mm.The average angle α of all teeth m(towards vertical direction) is 14 °.Tooth has the thickness T of 11mm.
In example according to the present invention, adopt identical device, but the average angle α of all teeth mIt is 10 °.
Still measure the F factor, the F factor is based upon and realizes the necessary treatment conditions of specific output (circumferential speed and temperature).
Experimental result is summarised in the following table:
Figure G2008800212366D00091
By last table also as seen from Figure 8, with average angle α mThe equipment that is 14 ° (F factors 747.5) is compared, and uses the average angle α towards vertical direction mThe film processing device that is 10 ° can be implemented under the much lower F factor (702.1) with 1250kg/d.m 2Ratio output produce.
For Fig. 8, further visiblely be, if to extrapolating with respect to figure line, then with α than the substantially linear that drawing obtained of output by the F factor mBe the 2110kg/d.m of 14 ° film processing device 2Compare, use average angle α mThe film processing device that is 10 ° can obtain 2550kg/d.m 2Maximum production, wherein surpass 1120 ℃ of m/s of the maximum F factor.
Example 3:
Its experiment be provided with example 1 and example 2 in basic identical, but, the rotor that has of the film processing device of Cai Yonging only has four blades in this example.
In comparative example, the length of the tooth of arranging on the blade correspondingly is 62mm.The length that is adjacent to the gap of described tooth correspondingly is 31mm.Tooth has the thickness T of 11mm.
Adopt identical device in example according to the present invention, but, tooth has the thickness T of 22mm.
Experimental result is summarised in the following table:
Figure G2008800212366D00101
Figure G2008800212366D00111
By last table and as seen from Figure 9, be that the equipment of 11mm (F factor 924.5/1063.8) is compared with thickness T, use transverse tooth thickness degree T can be implemented under the much lower F factor (905.4/921.6) with 1250kg/d.m as the film processing device of 22mm 2Ratio output produce.
For Fig. 9, if further visible is to extrapolating with respect to the figure line that drawing obtained than output by the F factor, then to be the 1300kg/d.m of the film processing device of 11mm with T 2Compare, use transverse tooth thickness degree T can obtain 1510kg/d.m as the film processing device of 22mm 2Maximum production, wherein surpass 1120 ℃ of m/s of the maximum F factor.

Claims (8)

1. a film processing device (8) comprises the rotor (16) with at least one cylindrical section (26), at least one scraper blade (32,33,34,35,36,41) be disposed on the described cylindrical section, described scraper blade comprises at least two teeth (42,43,44,42 ', 43 ', 44 ')
It is characterized in that, described scraper blade or described tooth (42,43,44,42 ', 43 ', 44 ') thickness (T) correspondingly greater than 5mm.
2. film processing device as claimed in claim 1 (8) is characterized in that, described thickness (T) is preferably 17mm to 55mm greater than 11mm, is most preferably 22mm.
3. film processing device as claimed in claim 1 or 2 (8), it is characterized in that, described tooth space separately forms the gap thus, and the average ratio V between the length (G) in the length (L) of a tooth (41) and the contiguous gap of locating that is positioned at described tooth is correspondingly greater than 2: 1.
4. film processing device as claimed in claim 3 (8) is characterized in that, described average ratio V was preferably 3.3: 1 greater than 3: 1.
5. as claim 3 or 4 described film processing devices (8), it is characterized in that, described tooth (42,43,44,42 ', 43 ', 44 ') length (L) be 40mm to 200mm correspondingly, and be preferably 90mm to 110mm.
6. each described film processing device (8) in the claim as described above is characterized in that, the described tooth of at least a portion (42,43,44,42 ', 43 ', 44 ') form the angle [alpha] greater than 0 °, the average angle α of all described teeth towards vertical direction mLess than 14 °.
7. film processing device as claimed in claim 4 (8) is characterized in that, described average angle α mLess than 11 °, be preferably 10 °.
8. use of each described film processing device in the claim as described above is used for being manufactured on by the cellulose suspension of water-based tertiary amino oxides the mouldable cellulose solution of described water-based tertiary amino oxides.
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