CN112626905A - Process for manufacturing wheat straw pulp - Google Patents
Process for manufacturing wheat straw pulp Download PDFInfo
- Publication number
- CN112626905A CN112626905A CN202011493776.3A CN202011493776A CN112626905A CN 112626905 A CN112626905 A CN 112626905A CN 202011493776 A CN202011493776 A CN 202011493776A CN 112626905 A CN112626905 A CN 112626905A
- Authority
- CN
- China
- Prior art keywords
- pulp
- wheat straw
- sending
- produced
- hydrapulper
- Prior art date
- 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.)
- Pending
Links
- 239000010902 straw Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 27
- 241000209140 Triticum Species 0.000 title claims abstract description 24
- 235000021307 Triticum Nutrition 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000010009 beating Methods 0.000 claims abstract description 30
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 22
- 235000009566 rice Nutrition 0.000 claims abstract description 22
- 238000004537 pulping Methods 0.000 claims abstract description 18
- 238000000227 grinding Methods 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 238000012216 screening Methods 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims description 29
- 239000012752 auxiliary agent Substances 0.000 claims description 23
- 241000209094 Oryza Species 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 230000014759 maintenance of location Effects 0.000 claims description 16
- 239000012895 dilution Substances 0.000 claims description 12
- 238000010790 dilution Methods 0.000 claims description 12
- 229920002472 Starch Polymers 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 229920001131 Pulp (paper) Polymers 0.000 abstract description 15
- 238000007865 diluting Methods 0.000 abstract description 12
- 238000002360 preparation method Methods 0.000 abstract description 3
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 9
- 238000007670 refining Methods 0.000 description 7
- 244000025254 Cannabis sativa Species 0.000 description 4
- 229920002522 Wood fibre Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002025 wood fiber Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- 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
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
- D21D1/30—Disc mills
- D21D1/303—Double disc mills
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
Abstract
The invention relates to the technical field of paper pulp preparation, in particular to a process for manufacturing wheat straw paper pulp. A technology for making wheat straw pulp includes beating rice straw to become pulp, diluting and stirring in hydraulic pulper, fine grinding in dual-disc pulp grinder, removing dregs, diluting and stirring in hydraulic pulper, screening out good pulp by pressure sieve, mixing with assistant and pre-pulping. The process has the advantages of simple steps and low cost.
Description
Technical Field
The invention relates to the technical field of paper pulp preparation, in particular to a process for manufacturing wheat straw paper pulp.
Background
In recent years, the average amount of pulp consumed per year in China is about 9X 107t, the main raw materials for pulping and papermaking comprise wood fibers, non-wood fibers and secondary fibers, wherein the most important raw materials are wood fibers. The forest coverage area of China only accounts for 20 percent of the territorial area, the supply of paper making raw materials is insufficient, paper making wood pulp is mostly dependent on import, and the shortage of wood resources worldwide at presentIncreasingly, the production of pulp and paper without damaging forests and the environment is the goal sought by various paper-making enterprises. As a big agricultural country in China, the annual yield of plant straws is 7 multiplied by 109t, wherein the annual yield of straw is the front, in traditional agriculture most of straw is treated by open air incineration, which is once considered as the main cause of atmospheric pollution and greenhouse effect, and its unreasonable treatment not only pollutes the environment but also wastes good resources. Therefore, effective development and utilization of rice straw are the focus of attention in various fields. And the content of cellulose in the straw is about 40%, which is very suitable for preparing paper pulp.
Disclosure of Invention
The invention aims to provide a process for manufacturing wheat straw pulp, which has the advantages of simple steps and low cost.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The invention provides a process for preparing wheat straw pulp, which comprises pulping rice straw, then sending to a hydrapulper for dilution and stirring, then carrying out fine grinding by a double-disc refiner, then sending to a slag remover for recovering coarse slag to the hydrapulper for dilution and stirring, then screening out good pulp by a pressure screen, sending the good pulp to a pulp mixing tank, adding an auxiliary agent, and then sending to a pre-pulping tank.
Further, the straw is beaten into pulp by ultrasonic waves.
Further, the straw is beaten into pulp by ultrasonic waves in an ultrasonic reactor, an ultrasonic roller of the ultrasonic reactor emits 25-40 khz, beating time is 30-60 s, and then the pulp is sent to a hydrapulper.
Further, the beating degree of the pulp refined by the double-disc refiner is 38-45SR, the wet weight is 3-3.6g, and the whiteness is 40-48.
Further, the auxiliary agent comprises the following components: a tension agent and a retention aid.
Furthermore, the weight part of the tension agent is 2.5-4.0 parts, and the weight part of the retention aid is 2.0-3.5 parts.
Further, the auxiliary agent is cationic starch.
The process for manufacturing the wheat straw pulp provided by the embodiment of the invention at least has the following advantages or beneficial effects:
pulping the rice straws, then delivering the rice straws to a hydrapulper for dilution and stirring, and then carrying out fine grinding by using a double-disc refiner, wherein the pulp can be more uniform and thorough in the fine grinding process through dilution and stirring by the hydrapulper, so that the quality of the fine grinding of the pulp is improved; after fine grinding, sending the pulp to a slag remover, then recovering coarse slag to a hydrapulper for dilution and stirring, refining the coarse slag, and then screening good pulp by adopting a pressure screen to avoid the influence of the coarse slag on the quality of the paper pulp, thereby avoiding the condition that the paper made of the paper pulp is not fine enough; and then sending the good pulp into a pulp mixing tank, adding an auxiliary agent, and mixing the uniformity and the viscosity of the paper pulp to ensure that the paper prepared from the paper pulp has better smoothness, tension and uniformity, and finally sending the paper into a pre-papermaking tank. The process not only can overcome the destructiveness of the traditional pulping to the fiber, but also can keep the soft toughness of the grass fiber.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to specific examples.
The embodiment of the application provides a process for manufacturing wheat straw pulp, which comprises the steps of pulping rice straws, then sending the rice straws to a hydrapulper for dilution and stirring, then carrying out fine grinding by using a double-disc refiner, then sending the rice straws to a slag remover, recovering coarse slag to the hydrapulper for dilution and stirring, then screening good pulp by using a pressure screen, then sending the good pulp to a pulp mixing tank, adding an auxiliary agent, and then sending the good pulp to a pre-pulping tank.
Pulping the rice straws, then delivering the rice straws to a hydrapulper for dilution and stirring, and then carrying out fine grinding by using a double-disc refiner, wherein the pulp can be more uniform and thorough in the fine grinding process through dilution and stirring by the hydrapulper, so that the quality of the fine grinding of the pulp is improved; after fine grinding, sending the pulp to a slag remover, then recovering coarse slag to a hydrapulper for dilution and stirring, refining the coarse slag, and then screening good pulp by adopting a pressure screen to avoid the influence of the coarse slag on the quality of the paper pulp, thereby avoiding the condition that the paper made of the paper pulp is not fine enough; and then sending the good pulp into a pulp mixing tank, adding an auxiliary agent, and mixing the uniformity and the viscosity of the paper pulp to ensure that the paper prepared from the paper pulp has better smoothness, tension and uniformity, and finally sending the paper into a pre-papermaking tank. The process not only can overcome the destructiveness of the traditional pulping to the fiber, but also can keep the soft toughness of the grass fiber.
Further, the straw is beaten into pulp by ultrasonic waves. The pulp is made by adopting ultrasonic beating, the characteristics of the traditional pulping are retained, the destructiveness of the traditional pulping to the fiber is overcome, the soft toughness of the grass fiber is retained, and the pulp plays a good role in improving the physical index of the paper.
Further, the straw is beaten into pulp by ultrasonic waves in an ultrasonic reactor, an ultrasonic roller of the ultrasonic reactor emits 25-40 khz, beating time is 30-60 s, and then the pulp is sent to a hydrapulper. By adopting the frequency and the time parameters, the beaten pulp not only keeps the softness of the grass fiber, but also can not damage the fiber and keep the toughness.
Further, the beating degree of the pulp refined by the double-disc refiner is 38-45SR, the wet weight is 3-3.6g, and the whiteness is 40-48. The quality of paper made by the pulp can be effectively ensured.
Further, the auxiliary agent comprises the following components: a tension agent and a retention aid. The paper made by adopting the two auxiliary agents has strong flexibility and better softness, and is suitable for toilet paper.
Furthermore, the weight part of the tension agent is 2.5-4.0 parts, and the weight part of the retention aid is 2.0-3.5 parts. The paper pulp prepared by the preparation has strong flexibility and optimal softness.
Further, the auxiliary agent is cationic starch. The paper prepared by adopting the auxiliary agent has high strength and is suitable for preparing corrugated paper.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The present embodiment provides a process for manufacturing wheat straw pulp, comprising the steps of:
beating the rice straws into pulp by ultrasonic waves, beating the rice straws into the pulp in an ultrasonic reactor by the ultrasonic waves, wherein the frequency of an ultrasonic roller of the ultrasonic reactor is 25khz, the beating time is 30s, then sending the pulp into a hydrapulper, diluting and stirring the pulp in the hydrapulper, finely grinding the pulp by using a double-disc refiner, refining the pulp by using the double-disc refiner, wherein the beating degree of the refined pulp is 38SR, the wet weight is 3g, and the whiteness is 40, then sending the pulp to a slag remover, recovering coarse slag into the hydrapulper, diluting and stirring the coarse slag, then screening the good pulp by using a pressure screen, then sending the good pulp into a pulp mixing tank, adding an auxiliary agent, wherein the auxiliary agent comprises a tension agent and a retention aid, the weight part of the tension agent is 2.5, the weight part of the retention aid is 2.0, and finally sending the good pulp into a pre-pulping tank.
Example 2
The present embodiment provides a process for manufacturing wheat straw pulp, comprising the steps of:
beating the rice straws into pulp by ultrasonic waves, beating the rice straws into the pulp in an ultrasonic reactor by the ultrasonic waves, wherein the frequency of an ultrasonic roller of the ultrasonic reactor is 40khz, the beating time is 60s, sending the pulp to a hydrapulper, diluting and stirring the pulp in the hydrapulper, finely grinding the pulp by using a double-disc refiner, refining the pulp by using the double-disc refiner with the beating degree of 45SR, the wet weight of 3.6g and the whiteness of 45, sending the pulp to a slag remover, recovering coarse slag to the hydrapulper, diluting and stirring the coarse slag, screening the good pulp by using a pressure screen, sending the good pulp to a pulp mixing tank, adding an auxiliary agent, wherein the auxiliary agent comprises a tension agent and a retention aid, the weight part of the tension agent is 3.0, the weight part of the retention aid is 3.0, and finally sending the good pulp to a pre-pulping tank.
Example 3
The present embodiment provides a process for manufacturing wheat straw pulp, comprising the steps of:
beating the rice straws into pulp by ultrasonic waves, beating the rice straws into the pulp in an ultrasonic reactor by the ultrasonic waves, wherein the frequency of an ultrasonic roller of the ultrasonic reactor is 35khz, the beating time is 50s, sending the pulp to a hydrapulper, diluting and stirring the pulp in the hydrapulper, finely grinding the pulp by using a double-disc refiner, refining the pulp by using the double-disc refiner with the beating degree of 40SR, the wet weight of 3.2g and the whiteness of 46, sending the pulp to a slag remover, recovering coarse slag to the hydrapulper, diluting and stirring the coarse slag, screening the good pulp by using a pressure screen, sending the good pulp to a pulp mixing tank, adding an auxiliary agent, wherein the auxiliary agent comprises a tension agent and a retention aid, the weight part of the tension agent is 3.2, the weight part of the retention aid is 2.8, and finally sending the good pulp to a pre-pulping tank.
Example 4
The present embodiment provides a process for manufacturing wheat straw pulp, comprising the steps of:
beating the rice straws into pulp by ultrasonic waves, beating the rice straws into the pulp in an ultrasonic reactor by the ultrasonic waves, wherein the frequency of an ultrasonic roller of the ultrasonic reactor is 32khz, the beating time is 50s, sending the pulp to a hydrapulper, diluting and stirring the pulp in the hydrapulper, finely grinding the pulp by using a double-disc refiner, refining the pulp by using the double-disc refiner, wherein the beating degree of the refined pulp is 43SR, the wet weight is 3.1g, and the whiteness is 42, sending the pulp to a slag remover, recovering coarse slag to the hydrapulper, diluting and stirring the coarse slag, screening the good pulp by using a pressure screen, sending the good pulp to a pulp mixing tank, adding an auxiliary agent, wherein the auxiliary agent comprises a tension agent and a retention aid, the weight part of the tension agent is 2.9, the weight part of the retention aid is 3.1, and finally sending the good pulp to a pre-pulping tank.
Example 5
The present embodiment provides a process for manufacturing wheat straw pulp, comprising the steps of:
beating the rice straws into pulp by ultrasonic waves, beating the rice straws into the pulp in an ultrasonic reactor by the ultrasonic waves, wherein the frequency of an ultrasonic roller of the ultrasonic reactor is 32khz, the beating time is 35s, then sending the pulp to a hydrapulper, diluting and stirring the pulp in the hydrapulper, finely grinding the pulp by a double-disc refiner, refining the pulp by the double-disc refiner with a beating degree of 41SR, a wet weight of 3.3g and a whiteness of 42, sending the pulp to a slag remover, recovering coarse slag to the hydrapulper, diluting and stirring the coarse slag, then screening the good pulp by a pressure screen, sending the good pulp to a pulp mixing tank, adding an auxiliary agent, wherein the auxiliary agent comprises a tension agent and a retention aid, the weight part of the tension agent is 3.9, the weight part of the retention aid is 3.4, and finally sending the good pulp to a pre-pulping tank.
The pulp prepared in the above examples 1-2 was used to produce straw pulp plain paper using a multi-wire, multi-cylinder paper machine, and the various test data of the plain paper are shown in the following table 1:
TABLE 1
As can be seen from Table 1, the plain paper produced from the straw pulp prepared in examples 1-2 was excellent in ring crush, tightness and paper quality.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. A process for making wheat straw pulp, characterized by: beating the rice straw into pulp, then sending the pulp to a hydrapulper for dilution and stirring, then carrying out fine grinding by a double-disc pulp grinder, then sending the pulp to a slag remover for recovering coarse slag to the hydrapulper for dilution and stirring, then screening good pulp by adopting a pressure screen, sending the good pulp into a pulp mixing tank, adding an auxiliary agent, and then sending the good pulp into a pre-pulping tank.
2. The process of claim 1, wherein the wheat straw pulp is produced by: the straw is beaten into pulp by ultrasonic waves.
3. The process of manufacturing wheat straw pulp of claim 2, wherein: the straw is beaten into thick liquid through the ultrasonic wave in ultrasonic reactor, ultrasonic reactor's ultrasonic roller sends the frequency and is 25 ~ 40khz, beats the system time and is 30 ~ 60s, sends to the hydrapulper again.
4. The process of claim 1, wherein the wheat straw pulp is produced by: the beating degree of the pulp refined by the double-disc refiner is 38-45SR, the wet weight is 3-3.6g, and the whiteness is 40-48.
5. The process of claim 1, wherein the wheat straw pulp is produced by: the beating degree of the pulp after being finely ground by adopting the double-disc refiner is 39SR, the wet weight is 3.5g, and the whiteness is 40.
6. The process of claim 1, wherein the wheat straw pulp is produced by: the beating degree of the pulp refined by the double-disc refiner is 37.5SR, the wet weight is 3.3g, and the whiteness is 42.
7. The process of claim 1, wherein the wheat straw pulp is produced by: the rice straw is pulped and then sent to a hydrapulper to dilute the pulp to have the concentration of 2.9-3.2%.
8. The process of claim 1, wherein the wheat straw pulp is produced by: the auxiliary agent comprises the following components: a tension agent and a retention aid.
9. The process of claim 1, wherein the wheat straw pulp is produced by: the tension agent is 2.5-4.0%, and the retention aid is 2.0-3.5%.
10. The process of claim 1, wherein the wheat straw pulp is produced by: the auxiliary agent is cationic starch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011493776.3A CN112626905A (en) | 2020-12-16 | 2020-12-16 | Process for manufacturing wheat straw pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011493776.3A CN112626905A (en) | 2020-12-16 | 2020-12-16 | Process for manufacturing wheat straw pulp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112626905A true CN112626905A (en) | 2021-04-09 |
Family
ID=75316299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011493776.3A Pending CN112626905A (en) | 2020-12-16 | 2020-12-16 | Process for manufacturing wheat straw pulp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112626905A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969513A (en) * | 2021-10-28 | 2022-01-25 | 北方化学工业股份有限公司 | Method for breaking nitrocellulose |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10225904A1 (en) * | 2002-06-11 | 2003-12-24 | P & T Gmbh | System to prepare and condition straw and the like, to give fibers for boards, has an ultrasonic reactor for the straw in heated water containing an odor-suppressing additive to give the required fiber surface structure |
| CN102337685A (en) * | 2010-07-20 | 2012-02-01 | 吴解生 | Non-pollution mechanical pulping with crop straws |
| CN106244634A (en) * | 2006-10-26 | 2016-12-21 | 希乐克公司 | Biomass processing |
| CN108149504A (en) * | 2017-12-22 | 2018-06-12 | 齐鲁工业大学 | The semi-chemical pulp clean pulping process of maize straw and wheat straw mixed raw material |
| CN110644271A (en) * | 2019-09-06 | 2020-01-03 | 中国制浆造纸研究院有限公司 | Green preparation method of micro-nano cellulose |
-
2020
- 2020-12-16 CN CN202011493776.3A patent/CN112626905A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10225904A1 (en) * | 2002-06-11 | 2003-12-24 | P & T Gmbh | System to prepare and condition straw and the like, to give fibers for boards, has an ultrasonic reactor for the straw in heated water containing an odor-suppressing additive to give the required fiber surface structure |
| CN106244634A (en) * | 2006-10-26 | 2016-12-21 | 希乐克公司 | Biomass processing |
| CN102337685A (en) * | 2010-07-20 | 2012-02-01 | 吴解生 | Non-pollution mechanical pulping with crop straws |
| CN108149504A (en) * | 2017-12-22 | 2018-06-12 | 齐鲁工业大学 | The semi-chemical pulp clean pulping process of maize straw and wheat straw mixed raw material |
| CN110644271A (en) * | 2019-09-06 | 2020-01-03 | 中国制浆造纸研究院有限公司 | Green preparation method of micro-nano cellulose |
Non-Patent Citations (2)
| Title |
|---|
| 刘洁等: "超声无氯麦草制浆具有的较好发展前景", 《华东纸业》 * |
| 王强等: "超声化学法处理麦草浆", 《国际造纸》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969513A (en) * | 2021-10-28 | 2022-01-25 | 北方化学工业股份有限公司 | Method for breaking nitrocellulose |
| CN113969513B (en) * | 2021-10-28 | 2023-07-25 | 北方化学工业股份有限公司 | Method for breaking nitrocellulose |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7186316B1 (en) | Method for preparing pulp from cornstalk | |
| US20040256065A1 (en) | Method for producing corn stalk pulp and paper products from corn stalk pulp | |
| CN102978986A (en) | Method for preparing paper pulp by using biological enzyme | |
| CN107881842B (en) | Method for preparing high-strength corrugated base paper by using straws and waste paper pulp | |
| Ashori | Pulp and paper from kenaf bast fibers | |
| KR100662043B1 (en) | The production method of pulps and its paper products from bamboo | |
| CN111155354A (en) | Processing technology of virgin stock natural color toilet paper | |
| US8012308B2 (en) | Manufacturing method of mechanical pulp from cornstalk cellulose | |
| Sharma et al. | Utilization of sarkanda for making pulp and paper using elemental chlorine free and total chlorine free bleaching processes | |
| Tripathi et al. | Suitability of banana stem pulp as replacement of softwood pulp for making superior grade unbleached paper from agro residue pulp | |
| CN112626905A (en) | Process for manufacturing wheat straw pulp | |
| JPH05148794A (en) | Sanitary tissue paper | |
| Sharma et al. | Kans grass–a promising raw material for papermaking | |
| CN109554946A (en) | The method that ionic liquid collaboration ultrasonic treatment ECF bleached kraft pulp prepares paper base material | |
| JPH0813367A (en) | Production of pulp | |
| Fagbemi et al. | Strength properties of paper from pulp blend of kenaf bark and corn husk: A preliminary study | |
| CN110939013B (en) | Method for manufacturing high-bulk gray board paper | |
| CN114855496A (en) | Bamboo fluff pulp preparing process and product | |
| Spiridon | Modifications of Asclepias syriaca fibers for paper production | |
| CN114808537B (en) | Preparation method of household paper and household paper | |
| Molaei et al. | Preparation of bleached soda pulp from canola stalks | |
| Małachowska et al. | Comparison of the beatability for fast-growing plants, softwood, and hardwood sources of fibers | |
| Otitoju et al. | THE EFFECT OF ORGANOSOLV TREATMENT ON THE PHYSICOCHEMICAL PROPERTIES OF PULP AND PAPER FROM HORSE GRASS (ANDROPOGON TECTORUM). | |
| Lai et al. | Development of bio-mechanical rice straw pulp by high consistency kneader with thermal and Alkaline | |
| Jahan et al. | Alkaline pulp of corn stalks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210409 |
|
| RJ01 | Rejection of invention patent application after publication |