CN109137591A - It is used to prepare the device of powdered cellulose - Google Patents
It is used to prepare the device of powdered cellulose Download PDFInfo
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- CN109137591A CN109137591A CN201811099709.6A CN201811099709A CN109137591A CN 109137591 A CN109137591 A CN 109137591A CN 201811099709 A CN201811099709 A CN 201811099709A CN 109137591 A CN109137591 A CN 109137591A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/36—Explosive disintegration by sudden pressure reduction
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- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The invention discloses a kind of devices for being used to prepare powdered cellulose, including screw rod cavity, screw rod, speed reducer, feed inlet, discharge port, bracket and pedestal, the feed inlet connects vertically disposed screw conveyor, the vertically disposed screw conveyor top is equipped with the first opening far from the side of discharge port, first opening is connected with horizontally disposed screw conveyor, the horizontally disposed screw conveyor top is equipped with the second opening, second upper opening portion is provided with loading hopper, and second opening is connected to the loading hopper.Provided by the present invention for preparing the device of powdered cellulose, solve the problems, such as that fibre material charging is difficult, and under the effect of its high temperature and pressure, polysaccharose substance can resolve into monosaccharide and small molecule organic compound, β, gamma-cellulose content is caused to reduce, so that chemical cellulose content is higher in gained powdered cellulose, production cost is low, high-efficient, production method is environmentally friendly.
Description
Technical field
The present invention relates to cellulose preparation facilities fields.It is more particularly related to which one kind is used to prepare powdery fibre
Tie up the device of element.
Background technique
Powdered cellulose is a kind of form of cellulose, is to be made by cellulose, is similar with cellulose, microcrystalline cellulose
Substance.Powdered cellulose is lower than the degree of polymerization of cellulose, but specific surface area is bigger than cellulose, and polar-OH base still has,
Be allowed to adsorptivity, in terms of performance it is more prominent.So powdered cellulose has unique function in industrial application
Effect, such as chemical industry filter aid (selecting solution salt), ion adsorbent (power plant condensed water removes ferrous ion etc.), coating filling
Agent (synthetic leather etc.), burner body auxiliary material (match end, welding rod welding agent etc.).
The preparation method of powdered cellulose is to first pass through slight sour water solution using mechanical grinding using paper pulp as raw material at present
Mill, makes the particle of certain fineness and mobility.It is chemically reacted involved in this process, had not only brought larger water consumption, but also
Difficulty is increased to the subsequent three-protection design of enterprise, is related to more environmental issue, greatly limits the development of enterprise.On the other hand,
Main component in paper pulp fiber includes chemical cellulose, beta cellulose and gamma-cellulose, and wherein chemical cellulose is crystallinity cellulose,
Structural stability is good, and beta cellulose and gamma-cellulose also contain various polysaccharides, it is intended that made other than containing cellulose
The higher the better for the content of chemical cellulose in cellulose.
In existing production technology, coarse fodder is squeezed out by screw-type extruder, then refined, lapping process is more time-consuming
Effort, screw-type extruder are that the pressure generated by screw rod rotation and shearing force mix material uniformly, existing screw rod
Formula extruder or extruder are mostly for food, field of fodder, and the physical property of flour itself is more special, has close
Spend it is small, meet pine, the features such as volume is big, mobility is bad, existing screw-type extruder, it is before material enters screw rod cavity plus
The material stage is easy to appear " bridging " phenomenon, i.e. material is arranged at the top of addition vessel, and lower part does not have material, goes out during material movement
The phenomenon that existing cavity shape.In addition, the content of chemical cellulose is not so good as people's will more in gained cellulose.
Summary of the invention
It is an object of the invention to solve at least the above problems, and provide the advantages of at least will be described later.
It, can be with using described device it is a still further object of the present invention to provide a kind of device for being used to prepare powdered cellulose
It can be obtained powdered cellulose by pure physical method, can be avoided using chemical reagent, reduce three-protection design cost, gained produces
Quality is more stable controllable, has excellent performance；In addition, there is " bridging " phenomenon when overcoming charging well in the device；It is more important
Be that provided by the present invention to be used to prepare chemical cellulose content in cellulose made from the device of powdered cellulose high.
In order to realize these purposes and other advantages according to the present invention, the dress for being used to prepare powdered cellulose is provided
It sets, comprising:
Including screw rod cavity, screw rod, speed reducer, feed inlet, discharge port, bracket and pedestal, the feed inlet connection is vertical
The screw conveyor of setting, the vertically disposed screw conveyor top are equipped with the first opening, institute far from the side of discharge port
It states the first opening and is connected with horizontally disposed screw conveyor, the horizontally disposed screw conveyor top is equipped with second and opens
Mouth opening, second upper opening portion are provided with loading hopper, and second opening is connected to the loading hopper；Because of fibre material
The features such as physical property, density is small, fluffy, volume is big, mobility is bad, so material need to be to force pan feeding when entering screw rod cavity
Form, material is added into screw rod cavity, in horizontal conveyer exit, a vertical conveyor, vertical transport are installed
Machine be screw conveyor form, horizontal conveyer outlet is connected with the entrance of vertical conveyor, it is mandatory by material by water
Horizontal conveyor passes through vertical conveyor again and screw rod cavity into purifying machine is added.
Preferably, 1~4, blender that vertical direction is arranged successively is provided in the loading hopper；Due to fibre object
Expect that density is small, more fluffy, volume is also bigger, so multiple blenders are set according to the height of loading hopper in loading hopper,
" bridging " phenomenon is generated when preventing material from entering horizontal screw conveyer, i.e., material is arranged at loading hopper top, but lower part does not have material,
There is the phenomenon that empty shape.
Preferably, the screw rod cavity, both ends open are horizontally disposed with, and the feed inlet is opened in close to the screw rod
Cavity top open at one end, another end opening are discharge port, two screw rods are arranged in parallel in the screw rod cavity, close to charging
Mouthful screw rod one end driven and rotate by speed reducer, the spiral of different screw pitch is arranged by section the every screw rod, from feed opening to
The section is divided into feeding section, mixes and cut section and squeeze discharge zone by discharge port, and the Screw Parameters in each section are as follows:
Feeding section: screw diameter be the screw pitch between 30~285mm, spiral be 40~320mm, draw ratio is 5~55, lead
For 60~570mm；
It is mixed to cut section: screw diameter be the screw pitch between 30~285mm, spiral be 10~320mm, draw ratio is 4~55, lead
For 60~570mm；
Squeeze discharge zone: screw diameter be the screw pitch between 30~285mm, spiral be 10~320mm, draw ratio is 1~55,
Lead is 60~570mm；
Screw pitch between the spiral is successively decreased in gradient from feeding section to discharge zone is squeezed；What is provided through the invention is used to make
The device of standby sugarcane food fibre powder, material pass through the feeding section of screw rod, mix and cut section, squeeze discharge zone, are transported to screw rod cavity
Discharge outlet discharging；The screw pitch of each section is gradually successively decreased or gradient is successively decreased, and is obtained into the bulk material after screw rod cavity
To squeeze, the volume of material is set to become smaller, material is closer, carries out again to material entered back into the smaller section of screw pitch behind benefit
It is broken, squeeze, rubbing the effects of；During transportation with the variation of fineness of materials, the screw pitch of different gradients makes material
Material reach discharge outlet granularity more it is thin more evenly so that subsequent fine grinding is more light；
The screw rod containment portion is provided with electrical induction device, and the operating temperature in each section is as follows:
Feeding section operating temperature is 50~170 DEG C, a mixed section operating temperature of cutting is 80~170 DEG C, squeezes discharge zone work temperature
Degree is 80~250 DEG C；
The operating temperature increases in gradient from feeding section to discharge zone is squeezed；Material is in the process Jing Guo screw rod transmission
In, cavity of the screw rod cavity by electrical induction device to each section is heated by the temperature of setting, so that contained in material
Water transform at vapor, increase the intracorporal pressure of screw rod chamber, when the temperature and pressure of screw rod cavity reaches certain range
Interior, beta cellulose and gamma-cellulose decompose rapidly in fibre material, improve the content of chemical cellulose in fibre material, reach purifying mesh
's；.
Preferably, pressure regulator panel is set outside the discharge port, the pressure regulator panel is parallel with the discharge port
Be oppositely arranged, the horizontal distance between the discharge port is adjustable, adjust between pressure regulator panel and discharge port it is horizontal away from
From, thus it is possible to vary pressure size of the material in screw rod cavity, control discharge port pressure are 0.5~10Mpa, further increase fibre
The effect for tieing up material purifying, improves the content of chemical cellulose；It is controlled and is discharged using adjustable pressure regulator panel, more traditional examination
Material mold is more suitable for cellulose substances, can effectively prevent material in discharging mold mouth and generates " bridging " phenomenon, blocks discharge port；
The discharge outlet also sets up outer cover, controls discharging direction.
Preferably, the axis output end of shaft coupling of the axle portion of the screw rod in the form of rectangular spline and the speed reducer connects
It connects, and is aided with nut and locks, the rotation direction of the nut is identical as the rotation direction of the screw rod；The screw rod cavity subtracts with described
Fast machine output end is connected with shaft coupling；The speed reducer input terminal is driven by a motor by belt.
Preferably, the screw rod cavity can also be that multisection type is arranged, and pass through bolt, flanged joint between every section；It is described
Screw rod can also be that multisection type is arranged, and be connected between every section with the structure of rectangular spline；The mixed screw rod for cutting section can also divide
For three segments, along discharge port direction, screw pitch is successively decreased in gradient.
Preferably, it slots on the outside of the screw rod cavity, pipeline is set in slot, passes to circulating water；Apart from the electricity
Temperature sensor is installed on the screw rod cavity of induction heating apparatus certain distance；Temperature sensing is installed in the discharge outlet
Device；All the sensors all add protective case.
Preferably, it mixes to cut and screw slotting is set in section and the spiral of extruding discharge zone, material is allowed to lead to from fluting
It crosses.
Preferably, the method for powdered cellulose being prepared based on the device for being used to prepare powdered cellulose as described above,
Include:
Step 1: cross 20 mesh screens after pulp board is carried out shredding and precrushing and obtain pulp powder, it is mixed with water and puffing aid
It closes uniformly, so that the moisture control of mixed material is 20~50%；The additive amount of the puffing aid is less than or equal to 5%；
Step 2: mixed material obtained by step 1 is passed through the device for being used to prepare powdered cellulose, setting charging
It is 80 that the operating temperature of section, which is 50~170 DEG C, the mixed operating temperature for cutting section is 80~170 DEG C, squeezes discharge zone operating temperature~
170 DEG C, the operating temperature increases in gradient from feeding section to discharge zone is squeezed；Residence time of material is less than or equal to 10min, object
Expect that outlet pressure control in 0.5~10Mpa, obtains extruded stock；
Step 3: extruded stock obtained by step 2 is dried, the dried material that moisture is less than or equal to 10% is obtained；
Step 4: dried material obtained by step 3 is refined, be sieved targeted particle size powdered cellulose.
Preferably, the puffing aid is selected from carbonate.
The present invention is include at least the following beneficial effects: one, due to being used to prepare the high temperature and pressure of the device of powdered cellulose
Effect, polysaccharose substance can resolve into monosaccharide and small molecule organic compound, cause β, gamma-cellulose content to reduce, so that gained powder
Chemical cellulose content is higher in shape cellulose, and production cost is low, high-efficient, production method is environmentally friendly；Two, the moisture in paper pulp fiber
Become Steam soak under the high temperature and high pressure environment for the device for being used to prepare powdered cellulose to fibrous inside, the gas of expansion is made
For paper pulp fiber, so that the hemicellulose degradation in component, lateral connection strength reduction between fiber, and in a short time
Abrupt release high steam, the vapor in raw material hole sharply expand, and generate the effect of explosion, it is tiny that raw material, which is torn,
Threadiness achievees the effect that raw material components and structure change；Three, through being used to prepare at the high temperature and pressure of the device of powdered cellulose
Paper pulp fiber structure after reason changes, and is easier to be ground into fine particles in subsequent fine grinding, fine grinding energy consumption reduces, and product obtains
Rate improves.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the schematic device of the present invention for being used to prepare powdered cellulose；
Fig. 2 is the schematic diagram of screw rod of the present invention.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
As shown in Figure 1, 2, a kind of device for being used to prepare sugarcane food fibre powder, including screw rod cavity 10, spiral shell are provided
Bar, speed reducer 3, feed inlet, discharge port, bracket 15 and pedestal 17, the feed inlet connect vertically disposed screw conveyor 9,
It is driven by vertical conveyor motor 8, vertically disposed 9 top of screw conveyor is equipped with first far from the side of discharge port and opens
Mouthful, first opening is connected with horizontally disposed screw conveyor 6, is driven by horizontal conveyer motor 5, and the level is set
6 top of screw conveyor set is equipped with the second opening, and second upper opening portion is equipped with loading hopper 7, second opening and institute
State the connection of loading hopper 7；Because of the physical property of fibre material, the features such as density is small, fluffy, volume is big, mobility is bad, so material exists
Material need to be added into screw rod cavity 10 in the form of forcing pan feeding when into screw rod cavity 10, be exported in horizontal conveyer 6
Place, installs a vertical conveyor 9, and vertical conveyor 9 is the form of screw conveyor, the outlet of horizontal conveyer 6 with it is vertical defeated
The entrance of machine 9 is sent to be connected, it is mandatory that material is added by vertical conveyor 9 into screw rod cavity 10 again by horizontal conveyer 6
It is interior.
1~4, blender that vertical direction is arranged successively is provided in the loading hopper 7 in one of the embodiments,
Since fibre material density is small, more fluffy, volume is also bigger, so being arranged in loading hopper 7 according to the height of loading hopper
Multiple blenders generate " bridging " phenomenon when preventing material from entering horizontal screw conveyer 5, i.e. material is arranged at loading hopper top, but
Lower part does not have material, there is the phenomenon that empty shape.
The screw rod cavity 10 in one of the embodiments, both ends open are horizontally disposed with, and the feed inlet is opened in
Close to the screw rod cavity 10 top open at one end, another end opening is discharge port, is arranged in parallel in the screw rod cavity 10
Two screw rods are driven by speed reducer 3 close to screw rod one end of feed inlet and are rotated, as shown in Fig. 2, the every screw rod is set by section
The section is divided into feeding section from feed opening to discharge port, mixes and cut section and squeeze discharge zone, often by the spiral for setting different screw pitch
The Screw Parameters in a section are as follows:
Feeding section: screw diameter be the screw pitch between 30~285mm, spiral be 40~320mm, draw ratio is 5~55, lead
For 60~570mm；
It is mixed to cut section: screw diameter be the screw pitch between 30~285mm, spiral be 10~320mm, draw ratio is 4~55, lead
For 60~570mm；
Squeeze discharge zone: screw diameter be the screw pitch between 30~285mm, spiral be 10~320mm, draw ratio is 1~55,
Lead is 60~570mm；
Screw pitch between the spiral is successively decreased in gradient from feeding section to discharge zone is squeezed；What is provided through the invention is used to make
The device of standby sugarcane food fibre powder, material pass through the feeding section of screw rod, mix and cut section, squeeze discharge zone, are transported to screw rod cavity
10 discharge outlet discharging；The screw pitch of each section is gradually successively decreased or gradient is successively decreased, to the bulk object after entrance screw rod cavity 10
Material is squeezed, and the volume of material is made to become smaller, and material is closer, is carried out again pair with being entered back into the smaller section of screw pitch behind benefit
The effects of the broken of material, extruding, rubbing；Material is during transportation with the variation of fineness of materials, the screw pitch of different gradients
So that material reach discharge outlet granularity more it is thin more evenly so that subsequent fine grinding is more light；
Electrical induction device 12 is provided with outside the screw rod cavity 10, the operating temperature in each section is as follows:
Feeding section operating temperature is 50~170 DEG C, a mixed section operating temperature of cutting is 80~170 DEG C, squeezes discharge zone work temperature
Degree is 80~250 DEG C；
The operating temperature increases in gradient from feeding section to discharge zone is squeezed；Material is in the process Jing Guo screw rod transmission
In, cavity of the screw rod cavity 10 by electrical induction device 12 to each section is heated by the temperature of setting, so that in material
Contained water transform increases the pressure in screw rod cavity 10 at vapor, when the temperature and pressure of screw rod cavity 10 reaches one
In fixed range, beta cellulose and gamma-cellulose are decomposed rapidly in fibre material, are improved the content of chemical cellulose in fibre material, are reached
To purifying purpose.
Pressure regulator panel 13 is set outside the discharge port in one of the embodiments, the pressure regulator panel 13 with
The discharge port is oppositely arranged in parallel, and the horizontal distance between the discharge port is adjustable, is adjusted pressure regulator panel 13 and is gone out
Horizontal distance between material mouth, thus it is possible to vary pressure size of the material in screw rod cavity 10, control discharge port pressure be 0.5~
10Mpa further increases the effect of fibre material purifying, improves the content of chemical cellulose；Use adjustable pressure regulator panel 13
Control discharging, more traditional sample mold are more suitable for cellulose substances, can effectively prevent material and " take in discharging mold mouth generation
Bridge " phenomenon, blocks discharge port；The discharge outlet also sets up outer cover 14, controls discharging direction.
Shaft coupling of the axle portion of the screw rod in the form of rectangular spline and the speed reducer 3 in one of the embodiments,
The connection of axis output end, and be aided with that nut is locked, and the rotation direction of the nut is identical as the rotation direction of the screw rod；The screw rod
Cavity 10 is connect with 3 output end of speed reducer with shaft coupling 4；3 input terminal of speed reducer is driven by belt 2 by motor 1.
The screw rod cavity 10 can also be that multisection type is arranged in one of the embodiments, pass through bolt, method between every section
Orchid connection；The screw rod can also be that multisection type is arranged, and be connected between every section with the structure of rectangular spline；The mixed spiral shell for cutting section
Bar is further divided into three segments, and along discharge port direction, screw pitch is successively decreased in gradient.
It slots on the outside of the screw rod cavity 10 in one of the embodiments, pipeline is set in slot, passes to circulating water,
Recirculated water reaches circulation purpose by heat exchanger 16；In the screw rod cavity 10 apart from 13 certain distance of electrical induction device
On temperature sensor 11 is installed；Temperature sensor is installed in the discharge outlet；All the sensors all add protective case.
It mixes to cut in one of the embodiments, and screw slotting is set in section and the spiral of extruding discharge zone, allow material
Pass through from fluting.
Flour is prepared based on the device for being used to prepare powdered cellulose as described above in one of the embodiments,
The method of element, comprising:
Step 1: cross 20 mesh screens after pulp board is carried out shredding and precrushing and obtain pulp powder, it is mixed with water and puffing aid
It closes uniformly, so that the moisture control of mixed material is 20~50%；The additive amount of the puffing aid is less than or equal to 5%；
Step 2: mixed material obtained by step 1 is passed through the device for being used to prepare powdered cellulose, setting charging
It is 80 that the operating temperature of section, which is 50~170 DEG C, the mixed operating temperature for cutting section is 80~170 DEG C, squeezes discharge zone operating temperature~
170 DEG C, the operating temperature increases in gradient from feeding section to discharge zone is squeezed；Residence time of material is less than or equal to 10min, object
Expect that outlet pressure control in 0.5~10Mpa, obtains extruded stock；
Step 3: extruded stock obtained by step 2 is dried, the dried material that moisture is less than or equal to 10% is obtained；
Step 4: dried material obtained by step 3 is refined, be sieved targeted particle size powdered cellulose.
The puffing aid is selected from carbonate in one of the embodiments,.
Embodiment 1
Step 1: the pulp powder, water and puffing aid that pulp board pre-processes are uniformly mixed, so that mixed material contains
Water rate is controlled 20%；The additive amount of the puffing aid is 5%；
Step 2: mixed material obtained by step 1 to be passed through to the device for being used to prepare powdered cellulose, feeding section is set
It is 100 DEG C that operating temperature, which is 50 DEG C, the mixed operating temperature for cutting section is 80 DEG C, squeezes discharge zone operating temperature, the operating temperature
It is increased in gradient from feeding section to discharge zone is squeezed；Residence time of material is 10min, and pressure control exists at material outlet
0.5Mpa obtains extruded stock；
Step 3: extruded stock obtained by step 2 is dried, the dried material that moisture is less than or equal to 10% is obtained；
Step 4: dried material obtained by step 3 is refined, be sieved targeted particle size powdered cellulose.
Embodiment 2
Step 1: the pulp powder, water and puffing aid that pulp board pre-processes are uniformly mixed, so that mixed material contains
Water rate is controlled 50%；The additive amount of the puffing aid is 3%；
Step 2: mixed material obtained by step 1 to be passed through to the device for being used to prepare powdered cellulose, feeding section is set
It is 170 DEG C that operating temperature, which is 100 DEG C, the mixed operating temperature for cutting section is 150 DEG C, squeezes discharge zone operating temperature, the work temperature
Degree increases in gradient from feeding section to discharge zone is squeezed；Residence time of material is 8min, and pressure control exists at material outlet
10Mpa obtains extruded stock；
Step 3: extruded stock obtained by step 2 is dried, the dried material that moisture is less than or equal to 10% is obtained；
Step 4: dried material obtained by step 3 is refined, be sieved targeted particle size powdered cellulose.
Embodiment 3
Step 1: the pulp powder, water and puffing aid that pulp board pre-processes are uniformly mixed, so that mixed material contains
Water rate is controlled 40%；The additive amount of the puffing aid is 5%；
Step 2: mixed material obtained by step 1 to be passed through to the device for being used to prepare powdered cellulose, feeding section is set
It is 150 DEG C that operating temperature, which is 100 DEG C, the mixed operating temperature for cutting section is 120 DEG C, squeezes discharge zone operating temperature, the work temperature
Degree increases in gradient from feeding section to discharge zone is squeezed；Residence time of material is 10min, and pressure control exists at material outlet
8Mpa obtains extruded stock；
Step 3: extruded stock obtained by step 2 is dried, the dried material that moisture is less than or equal to 10% is obtained；
Step 4: dried material obtained by step 3 is refined, be sieved targeted particle size powdered cellulose.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (10)
1. a kind of device for being used to prepare powdered cellulose, including screw rod cavity, screw rod, speed reducer, feed inlet, discharge port, branch
Frame and pedestal, which is characterized in that the feed inlet connects vertically disposed screw conveyor, the vertically disposed helical feed
Machine top is equipped with the first opening far from the side of discharge port, and first opening is connected with horizontally disposed screw conveyor,
The horizontally disposed screw conveyor top is equipped with the second opening, and second upper opening portion is provided with loading hopper, and described the
Two openings are connected to the loading hopper.
2. being used to prepare the device of powdered cellulose as described in claim 1, which is characterized in that be provided in the loading hopper
Be arranged successively 1~4, blender of vertical direction.
3. being used to prepare the device of powdered cellulose as claimed in claim 2, which is characterized in that the screw rod cavity, both ends
Opening is horizontally disposed with, and the feed inlet is opened in close to screw rod cavity top open at one end, and another end opening is discharging
Mouthful, two screw rods are arranged in parallel in the screw rod cavity, is driven and is rotated by speed reducer close to screw rod one end of feed inlet, it is described every
The spiral of different screw pitch is arranged by section for root screw rod, from feed opening to discharge port by the section be divided into feeding section, it is mixed cut section with
And discharge zone is squeezed, the Screw Parameters in each section are as follows:
Feeding section: screw diameter be the screw pitch between 30~285mm, spiral be 40~320mm, draw ratio is 5~55, lead 60
~570mm；
It is mixed to cut section: screw diameter be the screw pitch between 30~285mm, spiral be 10~320mm, draw ratio is 4~55, lead 60
~570mm；
Squeeze discharge zone: screw diameter be the screw pitch between 30~285mm, spiral be 10~320mm, draw ratio is 1~55, lead
For 60~570mm；
Screw pitch between the spiral is successively decreased in gradient from feeding section to discharge zone is squeezed；
The screw rod containment portion is provided with electrical induction device, and the operating temperature in each section is as follows:
Feeding section operating temperature is 50~170 DEG C, a mixed section operating temperature of cutting is 80~170 DEG C, squeezes discharge zone operating temperature and be
80~250 DEG C；
The operating temperature increases in gradient from feeding section to discharge zone is squeezed.
4. being used to prepare the device of powdered cellulose as claimed in claim 3, which is characterized in that setting outside the discharge port
Pressure regulator panel, the pressure regulator panel are oppositely arranged in parallel with the discharge port, with the horizontal distance between the discharge port
Adjustable, control discharge port pressure is 0.5~10Mpa；The discharge outlet also sets up outer cover, controls discharging direction.
5. being used to prepare the device of powdered cellulose as claimed in claim 4, which is characterized in that the shaft end portion of the screw rod with
The shaft coupling of rectangular spline form is connect with the axis output end of the speed reducer, and is aided with nut and is locked, the rotation direction of the nut
It is identical as the rotation direction of the screw rod；The screw rod cavity is connect with the output end of reducer with shaft coupling；The deceleration
Machine input terminal is driven by a motor by belt.
6. being used to prepare the device of powdered cellulose as described in claim 1, which is characterized in that the screw rod cavity can be with
It is multisection type setting, passes through bolt, flanged joint between every section；The screw rod can also be that multisection type is arranged, with square between every section
The structure of shape spline connects；The mixed screw rod for cutting section is further divided into three segments, and along discharge port direction, screw pitch is in gradient
Successively decrease.
7. being used to prepare the device of powdered cellulose as described in claim 1, which is characterized in that opened on the outside of the screw rod cavity
Slot is arranged pipeline in slot, passes to circulating water；It is installed on the screw rod cavity apart from the electrical induction device certain distance
There is temperature sensor；Temperature sensor is installed in the discharge outlet；All the sensors all add protective case.
8. being used to prepare the device of powdered cellulose as described in claim 1, which is characterized in that mixed to cut section and squeeze discharge
Screw slotting is set in the spiral of section, material is allowed to pass through from fluting.
9. preparing the side of powdered cellulose based on the device according to any one of claims 1 to 8 for being used to prepare powdered cellulose
Method characterized by comprising
Step 1: crossing 20 mesh screens after pulp board is carried out shredding and precrushing and obtaining pulp powder, mixed with water and puffing aid
It is even, so that the moisture control of mixed material is 20~50%；The additive amount of the puffing aid is less than or equal to 5%；
Step 2: mixed material obtained by step 1 is passed through the device for being used to prepare powdered cellulose, feeding section is set
It is 80~170 that operating temperature, which is 50~170 DEG C, the mixed operating temperature for cutting section is 80~170 DEG C, squeezes discharge zone operating temperature
DEG C, the operating temperature increases in gradient from feeding section to discharge zone is squeezed；Residence time of material is less than or equal to 10min, material
Outlet pressure is controlled in 0.5~10Mpa, obtains extruded stock；
Step 3: extruded stock obtained by step 2 is dried, the dried material that moisture is less than or equal to 10% is obtained；
Step 4: dried material obtained by step 3 is refined, be sieved targeted particle size powdered cellulose.
10. the method for preparing powdered cellulose as claimed in claim 9, which is characterized in that the puffing aid is selected from carbonate
Class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811099709.6A CN109137591A (en) | 2018-09-20 | 2018-09-20 | It is used to prepare the device of powdered cellulose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811099709.6A CN109137591A (en) | 2018-09-20 | 2018-09-20 | It is used to prepare the device of powdered cellulose |
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| Publication Number | Publication Date |
|---|---|
| CN109137591A true CN109137591A (en) | 2019-01-04 |
Family
ID=64815250
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811099709.6A Pending CN109137591A (en) | 2018-09-20 | 2018-09-20 | It is used to prepare the device of powdered cellulose |
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| CN (1) | CN109137591A (en) |
Cited By (4)
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| CN110452716A (en) * | 2019-09-03 | 2019-11-15 | 招远市汇潮新能源科技有限公司 | A kind of organic thermal cracking feed device |
| CN110591740A (en) * | 2019-09-30 | 2019-12-20 | 招远市汇潮新能源科技有限公司 | Oxygen discharge feeding device and cracking equipment |
| CN110591741A (en) * | 2019-09-30 | 2019-12-20 | 招远市汇潮新能源科技有限公司 | Oxygen discharge feeding device and cracking equipment |
| WO2023005074A1 (en) * | 2021-07-27 | 2023-02-02 | 湖州市菱湖新望化学有限公司 | Method for producing powdered cellulose |
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| WO2023005074A1 (en) * | 2021-07-27 | 2023-02-02 | 湖州市菱湖新望化学有限公司 | Method for producing powdered cellulose |
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