CN112342809A - Ultrasonic office waste paper pulping process - Google Patents
Ultrasonic office waste paper pulping process Download PDFInfo
- Publication number
- CN112342809A CN112342809A CN202011214083.6A CN202011214083A CN112342809A CN 112342809 A CN112342809 A CN 112342809A CN 202011214083 A CN202011214083 A CN 202011214083A CN 112342809 A CN112342809 A CN 112342809A
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- CN
- China
- Prior art keywords
- ultrasonic
- pulp
- pulping process
- office waste
- waste paper
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004537 pulping Methods 0.000 title claims abstract description 33
- 239000010893 paper waste Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 238000002791 soaking Methods 0.000 claims abstract description 13
- 239000004033 plastic Substances 0.000 claims abstract description 11
- 229920003023 plastic Polymers 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000004513 sizing Methods 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 239000004576 sand Substances 0.000 claims abstract description 9
- 238000000227 grinding Methods 0.000 claims abstract description 7
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims 5
- 239000002761 deinking Substances 0.000 abstract description 12
- 239000012535 impurity Substances 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 229920001131 Pulp (paper) Polymers 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000005188 flotation Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- D21B1/32—Defibrating by other means of waste paper
-
- 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
- D21B1/303—Defibrating by other means using vibrating devices
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/224—Use of means other than pressure and temperature
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Abstract
The invention discloses an ultrasonic office waste paper pulping process, and relates to the technical field of office waste paper pulping. Comprises a, crushing office waste paper into coarse pulp by a devillicate grinding machine; removing iron and sand; c, soaking; d, further decomposing the shredded paper in the coarse pulp into velvet-shaped fibers by using an ultrasonic reactor, brooming the fibers, and simultaneously separating the ink from the fibers; e, removing the printing ink by using a high-speed pulp washer; f, removing the plastic and the sizing material by using a vibrating screen; g, concentrating to obtain the finished pulp. The ultrasonic office waste paper pulping process is simple in impurity treatment and deinking, and has low water consumption, low power consumption and high pulp yield.
Description
Technical Field
The invention relates to the technical field of office waste paper pulping, in particular to an ultrasonic office waste paper pulping process.
Background
The office waste paper is recycled and pulped, impurities such as iron, sand grains, plastic sizing materials and the like mixed in the waste paper and ink printed on the waste paper are removed, and then pulp is prepared for papermaking. In the prior art, office waste paper pulping needs several processes of hydraulic disintegration, impurity removal, deinking and pulp grinding. During hydraulic breaking, the breaking force is large, a large amount of impurities such as plastics, sizing materials and the like contained in the waste paper are crushed into fine impurities to be mixed in the pulp, expensive advanced equipment is needed for fine treatment of the fine impurities, the energy consumption is large, and the pulp yield is low; secondly, deinking the coarse pulp obtained by hydraulic disintegration after removing impurities by adding a deinking agent and then removing the deinked coarse pulp by adopting a flotation method, wherein the concentration of the paper pulp needs to be diluted to about 0.8 percent by adopting the method for deinking, and the water consumption is large; and thirdly, a refiner is needed for refining after deinking is finished, and the power consumption of the refiner is large.
Therefore, how to manufacture an office waste paper pulping process, which is simple in impurity treatment and deinking, low in water and power consumption and high in pulp yield, becomes a problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to provide an ultrasonic office waste paper pulping process which is simple in impurity treatment and deinking, low in water and power consumption and high in pulp yield.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides an ultrasonic office waste paper pulping process, which comprises the following steps:
a, crushing office waste paper into coarse pulp by using a devillicate grinding mill;
removing iron and sand;
c, soaking;
d, further decomposing the shredded paper in the coarse pulp into velvet-shaped fibers by using an ultrasonic reactor, brooming the fibers, and simultaneously separating the ink from the fibers;
e, removing the printing ink by using a high-speed pulp washer;
f, removing the plastic and the sizing material by using a vibrating screen;
g, concentrating to obtain the finished pulp.
Optionally, the devillicating and milling machine in the step a adopts a double-helix devillicating and milling machine.
Optionally, a slag separator is adopted in the step b to remove the iron and sand particles.
Optionally, in the step c, the coarse pulp is placed in a soaking pool to be soaked at normal temperature.
Optionally, the brown stock has a soaking time of 24 hours to 36 hours.
Optionally, the brown stock has a soaking time of 30 hours.
Optionally, the concentration of the pulp in the ultrasonic reactor in the step d is set to be 1.5% -2.0%.
Optionally, the pulp consistency is set to 1.8%.
Optionally, the vibrating screen in the step e is set as a vibrating frame flat screen, and the plastic and the sizing material are screened out.
Optionally, the step g is performed by concentrating and dewatering with a twin-wire concentrating press to obtain the finished pulp.
The technical scheme provided by the invention can have the following beneficial effects:
the ultrasonic office waste paper pulping process adopts the ultrasonic reactor to replace hydraulic disintegration, is convenient for removing impurities of plastics and sizing materials, and has an emulsifying effect to separate printing ink from fibers so as to save the use of chemical articles such as deinking agents and the like. And secondly, a high-speed pulp washer is adopted to remove ink instead of a flotation method, so that the ink removal is low in water consumption. And thirdly, under the action of the ultrasonic reactor, the office waste paper can be decomposed into fibers and effectively broomed, and a pulping process through a pulping machine is not needed, so that a large amount of electric energy consumed by the pulping machine is saved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow diagram of an ultrasonic office broke pulping process.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus or methods consistent with certain aspects of the invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
The invention provides an ultrasonic office waste paper pulping process, which comprises the steps of a, preparing office waste paper into coarse pulp by a devillicate grinding mill, namely crushing the office waste paper into the coarse pulp, b, removing iron and sand grains, wherein the iron and sand grains have higher density and can be removed by a slag remover, c, soaking the coarse pulp in a soaking pool for a period of time, d, decomposing the coarse pulp into velvet-shaped fibers by an ultrasonic reactor, brooming the fibers, and simultaneously separating ink from the fibers; e, removing the printing ink by using a high-speed pulp washer; f, screening the plastic and the sizing material by using a vibrating screen; and g, concentrating and dehydrating by using a concentrator to obtain finished pulp. The ultrasonic reactor is in the prior art and comprises a reaction vessel, a generator and a transducer, and the paper pulp is subjected to high-frequency vibration, decomposition and fibrillation in the reaction vessel. The ultrasonic office waste paper pulping process utilizes the ultrasonic reactor to replace hydraulic disintegration in the prior art, has small breaking force when used for disintegrating and brooming waste paper, can not disintegrate plastics and sizing materials contained in the waste paper, can exist in larger particle shapes, and can be simply screened out by adopting the vibrating screen, thus the treatment is simple. Secondly, the ultrasonic wave has emulsification, the ink can be separated from the fiber under the action of the ultrasonic wave, and the ink can be removed by a high-speed pulp washer without adding chemical articles such as a deinking agent and the like for deinking; meanwhile, in the prior art, the concentration of paper pulp needs to be diluted to about 0.8 percent except for adding a deinking agent in the ink removed by a flotation method, the water consumption is high, the concentration of the paper pulp in the ultrasonic reactor can be set to be 1.5 to 2.0 percent, and the water resource is saved. And in the prior art, a pulping machine is required to be used for pulping, the power consumption of the pulping machine is high, the pulping process is not required, and the electric energy is saved.
Wherein, the devillicate grinding machine can adopt a double-helix devillicate grinding machine to make the office waste paper into coarse pulp.
Iron and sand are removed by a slag separator.
And (5) soaking the coarse pulp in a soaking pool at normal temperature. The soaking time is 24-36 hours, and the soaking time is preferably 30 hours.
The concentration of the pulp in the ultrasonic reactor is set to 1.5% -2.0%, and the preferred concentration is 1.8%.
The vibrating screen adopts a vibrating frame flat screen to screen out the plastic and the sizing material.
And concentrating and dewatering by a double-net concentrating and squeezing machine to obtain the finished pulp.
| Name (R) | Concentration% | Degree of percussion SR | Wet weight | Whiteness degree | Yield of the product |
| Traditional pulping | 3 | 35 | 1.9 | 84 | 80 |
| Ultrasonic test 1 | 2.5 | 36 | 2.0 | 82 | 98.3 |
| Ultrasonic test 2 | 2.7 | 33.5 | 2.15 | 81 | 98.5 |
| Ultrasonic test 2 | 3.1 | 32 | 2.22 | 80.5 | 98.6 |
Parameter comparison table
As can be seen from the graph, the parameters of the pulp prepared by the process are not much different from those of the traditional pulp, but the pulp yield is obviously higher than that of the traditional pulp.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An ultrasonic office waste paper pulping process is characterized by comprising the following steps:
a, crushing office waste paper into coarse pulp by using a devillicate grinding mill;
removing iron and sand;
c, soaking;
d, further decomposing the shredded paper in the coarse pulp into velvet-shaped fibers by using an ultrasonic reactor, brooming the fibers, and simultaneously separating the ink from the fibers;
e, removing the printing ink by using a high-speed pulp washer;
f, removing the plastic and the sizing material by using a vibrating screen;
g, concentrating and dehydrating to obtain finished pulp.
2. The ultrasonic office waste paper pulping process of claim 1, wherein the defibrator in step a is a double helix defibrator.
3. The ultrasonic office waste paper pulping process of claim 1, wherein the iron and sand are removed in step b using a scummer.
4. The ultrasonic office waste paper pulping process of claim 1, wherein the brown stock is soaked in the soaking tank at normal temperature in step c.
5. The ultrasonic office waste pulping process of claim 4, wherein the brown stock is soaked for a time of 24 hours to 36 hours.
6. The ultrasonic office waste pulping process of claim 5, wherein the brown stock is soaked for 30 hours.
7. The ultrasonic office waste pulping process of claim 1, wherein the concentration of pulp in the ultrasonic reactor in step d is set to 1.5% to 2.0%.
8. The ultrasonic office wastepaper pulping process of claim 7, wherein the pulp consistency is set at 1.8%.
9. The ultrasonic office waste pulping process of claim 1, wherein the vibratory screen in step e is configured as a vibrating frame flat screen to screen out the plastic and the size.
10. The ultrasonic office waste pulping process of claim 1, wherein the step g comprises concentrating and dewatering with a twin wire concentrating press to form the final pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011214083.6A CN112342809A (en) | 2020-11-04 | 2020-11-04 | Ultrasonic office waste paper pulping process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011214083.6A CN112342809A (en) | 2020-11-04 | 2020-11-04 | Ultrasonic office waste paper pulping process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112342809A true CN112342809A (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011214083.6A Pending CN112342809A (en) | 2020-11-04 | 2020-11-04 | Ultrasonic office waste paper pulping process |
Country Status (1)
| Country | Link |
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| CN (1) | CN112342809A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1908295A (en) * | 2006-08-09 | 2007-02-07 | 广西大学 | Method for removing ink in pulping process using wastepaper as raw material |
| CN103132357A (en) * | 2013-02-28 | 2013-06-05 | 刘长如 | Physical waste paper deinking technology |
| CN103243599A (en) * | 2013-04-28 | 2013-08-14 | 汕头市松炀纸业有限公司 | Process for recycling and preparing coated white board paper by using waste paper |
| CN105386349A (en) * | 2015-11-26 | 2016-03-09 | 李璇 | Custom environment-friendly paper machine for office and home use |
| EP3070202A1 (en) * | 2015-03-18 | 2016-09-21 | Seiko Epson Corporation | Sheet manufacturing apparatus and sheet manufacturing method |
| CN109722935A (en) * | 2018-12-11 | 2019-05-07 | 江苏理文造纸有限公司 | A kind of waste paper recovery process |
| CN110055799A (en) * | 2018-01-18 | 2019-07-26 | 东莞市泰昌纸业有限公司 | Use the slurry low temperature de-inking method of reclaimed waste paper production brown paper |
| CN110180642A (en) * | 2019-05-31 | 2019-08-30 | 浙江理工大学 | A kind of cone breaker device that can there is paper black part to separate with un-inked portions |
| CN111379181A (en) * | 2020-03-09 | 2020-07-07 | 内蒙古农业大学 | Method for dissolving, recycling and reusing based on damaged impregnated paper and cut leftover materials of impregnated paper |
-
2020
- 2020-11-04 CN CN202011214083.6A patent/CN112342809A/en active Pending
Patent Citations (9)
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|---|---|---|---|---|
| CN1908295A (en) * | 2006-08-09 | 2007-02-07 | 广西大学 | Method for removing ink in pulping process using wastepaper as raw material |
| CN103132357A (en) * | 2013-02-28 | 2013-06-05 | 刘长如 | Physical waste paper deinking technology |
| CN103243599A (en) * | 2013-04-28 | 2013-08-14 | 汕头市松炀纸业有限公司 | Process for recycling and preparing coated white board paper by using waste paper |
| EP3070202A1 (en) * | 2015-03-18 | 2016-09-21 | Seiko Epson Corporation | Sheet manufacturing apparatus and sheet manufacturing method |
| CN105386349A (en) * | 2015-11-26 | 2016-03-09 | 李璇 | Custom environment-friendly paper machine for office and home use |
| CN110055799A (en) * | 2018-01-18 | 2019-07-26 | 东莞市泰昌纸业有限公司 | Use the slurry low temperature de-inking method of reclaimed waste paper production brown paper |
| CN109722935A (en) * | 2018-12-11 | 2019-05-07 | 江苏理文造纸有限公司 | A kind of waste paper recovery process |
| CN110180642A (en) * | 2019-05-31 | 2019-08-30 | 浙江理工大学 | A kind of cone breaker device that can there is paper black part to separate with un-inked portions |
| CN111379181A (en) * | 2020-03-09 | 2020-07-07 | 内蒙古农业大学 | Method for dissolving, recycling and reusing based on damaged impregnated paper and cut leftover materials of impregnated paper |
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Application publication date: 20210209 |