CN109594383A - A method of producing cleaning papermaking bamboo pulp - Google Patents
A method of producing cleaning papermaking bamboo pulp Download PDFInfo
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- CN109594383A CN109594383A CN201811548544.6A CN201811548544A CN109594383A CN 109594383 A CN109594383 A CN 109594383A CN 201811548544 A CN201811548544 A CN 201811548544A CN 109594383 A CN109594383 A CN 109594383A
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- bamboo
- concentration
- slag
- softening
- slurries
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K9/00—Chemical or physical treatment of reed, straw, or similar material
- B27K9/002—Cane, bamboo
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The present invention provides a kind of method for producing cleaning papermaking bamboo pulp, and bamboo chip successively is handled to obtain bamboo slag by slice, removal of impurities and squeezing；Water is added to carry out boiling bamboo slag；The bamboo slag after the step 2 boiling is softened with the mixture of hydrogen peroxide and sodium hydroxide, extruding black liquor after softening is then fed into wash engine and is washed, and controls its pH and is fed again into dehydration concentration after 7~8, washing, softening bamboo slag is obtained after concentration；Softening bamboo slag is subjected to thread rolling, after thread rolling plus water is successively polished, is dehydrated concentration, obtain initial concentration slurries, initial concentration slurries are added second of polishing is carried out after water, dehydration is concentrated to get secondary concentration slurries, secondary concentration slurries are subjected to last time dehydration and are concentrated to get product.The beneficial effects of the present invention are primary softening has been carried out again after bamboo chip is carried out boiling, the viscosity of bamboo pulp is reduced, its slurries water content is controlled, guarantees to also ensure that its cellulose is not destroyed while its bamboo pulp exquisiteness, guarantees that the later period produces the quality of paper.
Description
Technical field
The present invention relates to fibrous raw material manufacturing fields, and in particular to a method of produce cleaning papermaking bamboo pulp.
Background technique
During producing caulis bambusae in taenian with bamboo, a large amount of bamboo slag can be remained, the bamboo slag of generation can be carried out in prior art
Working process produces bamboo pulp, such as patent CN105998767A for after bamboo chip boiling, and bamboo liquid is used to produce caulis bambusae in taenian, and bamboo chip is used to
Produce bamboo pulp.However, since, there is no softening to bamboo slag, the bamboo pulp produced can not be used directly to make in its technique
Paper.
In paper technology, how to protect its cellulose again while softening fibre, directly affects the quality of paper,
And in existing technique, the broken of its cellulose can be made by the way that softening agent high cooking softening under high-temperature and high-pressure conditions is added
It is bad.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of method for producing cleaning papermaking bamboo pulp.
Specific technical solution is as follows:
A method of cleaning papermaking bamboo pulp is produced, the difference is that, include the following steps:
Step 1: bamboo chip successively is handled to obtain bamboo slag by slice, removal of impurities and squeezing；
Step 2: water is added to carry out boiling bamboo slag；
Step 3: softening the bamboo slag after the step 2 boiling with the mixture of hydrogen peroxide and sodium hydroxide, soft
It is then fed into wash engine to press master extruding black liquor using helical feed after change and is washed, control its pH after 7~9, washing
It is fed again into press master dehydration concentration, softening bamboo slag is obtained after concentration；
Step 4: carrying out thread rolling for the softening bamboo slag, and after thread rolling plus water is successively polished, is dehydrated concentration, obtains just
Walk concentrated slurry, the initial concentration slurries are added second of polishing is carried out after water, dehydration is concentrated to get secondary concentration slurries, will
The secondary concentration slurries carry out last time dehydration and are concentrated to get product.
In above-mentioned technical proposal, in the step 2, the boiling temperature of bamboo slag is 151 DEG C~160 DEG C, and cooking pressure is
2MPa~5MPa, digestion time are 4~6 hours, and solid-liquid mass ratio is 1:(3~5).
In above-mentioned technical proposal, in the step 3, the mixture of hydrogen peroxide and sodium hydroxide presses the 10% of bamboo slag amount
~25% is added, and softening temperature is 80 DEG C~100 DEG C, and the softening time is 1 hour~2 hours, solid-liquid mass ratio 1:(2~4).
In above-mentioned technical proposal, the method also includes will be described Step 1: in the step 3 and the step 4
The waste collection post-processing of generation is recycled.
In above-mentioned technical proposal, in the step 4, after thread rolling plus its slurry mass concentration of water management is 8%~10%,
Initial concentration slurries control its slurry mass concentration 22%~25% after adding water.
In above-mentioned technical proposal, in the step 2, generated bamboo liquid after bamboo slag boiling is collected for producing
Caulis bambusae in taenian.
Compared with prior art, the beneficial effects of the present invention are will bamboo chip carry out boiling after again carried out primary softening,
And the viscosity of bamboo pulp is reduced by the way of being polished for a plurality of times, its slurries water content is controlled, is guaranteed again true while its bamboo pulp exquisiteness
It protects its cellulose not destroyed, guarantees that the later period produces the quality of paper.
Specific embodiment
It elaborates below with reference to embodiment to technical solution of the present invention.
Embodiment one
A method of cleaning papermaking bamboo pulp is produced, the difference is that, include the following steps:
Step 1: bamboo chip successively is handled to obtain bamboo slag by slice, removal of impurities and squeezing；
Step 2: adding water to carry out boiling bamboo slag, and the boiling temperature of bamboo slag is 151 DEG C, cooking pressure 3MPa, when boiling
Between be 5 hours, solid-liquid mass ratio 1:4, the bamboo liquid steamed collects production caulis bambusae in taenian.
Step 3: softening the bamboo slag after the step 2 boiling with the mixture of hydrogen peroxide and sodium hydroxide, soft
It is then fed into wash engine to press master extruding black liquor using helical feed after change and is washed, control its pH after 7~8, washing
It is fed again into press master dehydration concentration, softening bamboo slag, hydrogen peroxide and sodium hydroxide are obtained after concentration and is added by the 15% of bamboo slag amount
Enter, softening temperature is 100 DEG C, and the softening time is 2 hours, solid-liquid mass ratio 1:4.
Step 4: sending the softening bamboo slag into thread rolling machine and carry out thread rolling, and after thread rolling plus water makes concentration of slurry control exist
10%, it is then fed into after highly concentrated mill equipment is polished, polished and is dehydrated concentration, obtain initial concentration slurries, it will be described preliminary dense
After contracting slurries add, concentration of slurry control is 25%, and second of polishing of progress, dehydration are concentrated to get secondary concentration slurries, by institute
It states the progress last time dehydration of secondary concentration slurries and is concentrated to get product, the aqueous mass ratio of the product is 40%.
Will be described Step 1: the step 3 and the waste collection of the generation in the step 4 post-processing carry out circulation benefit
With.
Embodiment two
A method of cleaning papermaking bamboo pulp is produced, the difference is that, include the following steps:
Step 1: bamboo chip successively is handled to obtain bamboo slag by slice, removal of impurities and squeezing；
Step 2: adding water to carry out boiling bamboo slag, and in the step 2, the boiling temperature of bamboo slag is 155 DEG C, cooking pressure
For 4MPa, digestion time is 4 hours, solid-liquid mass ratio 1:3；In the step 2, by generated bamboo liquid after bamboo slag boiling
It is collected for producing caulis bambusae in taenian.
Step 3: softening the bamboo slag after the step 2 boiling with the mixture of hydrogen peroxide and sodium hydroxide, soft
It is then fed into wash engine to press master extruding black liquor using helical feed after change and is washed, control its pH after 7~8, washing
It is fed again into press master dehydration concentration, softening bamboo slag, hydrogen peroxide or lye are obtained after concentration and is added by the 25% of bamboo slag amount, it is soft
Changing temperature is 80 DEG C, and the softening time is 1.5 hours, solid-liquid mass ratio 1:3.
Step 4: sending the softening bamboo slag into thread rolling machine and carry out thread rolling, and after thread rolling plus water makes concentration of slurry control exist
10%, it is then fed into after highly concentrated mill equipment is polished, polished and is dehydrated concentration, obtain initial concentration slurries, it will be described preliminary dense
After contracting slurries add, concentration of slurry control is 25%, and second of polishing of progress, dehydration are concentrated to get secondary concentration slurries, by institute
It states the progress last time dehydration of secondary concentration slurries and is concentrated to get product, the aqueous mass ratio of the product is 40%.
In above-mentioned technical proposal, the method also includes will be described Step 1: in the step 3 and the step 4
The waste collection post-processing of generation is recycled.
Comparative example one
A method of cleaning papermaking bamboo pulp is produced, the difference is that, include the following steps:
Step 1: bamboo chip successively is handled to obtain bamboo slag by slice, removal of impurities and squeezing；
Step 2: adding water to carry out boiling bamboo slag, and the boiling temperature of bamboo slag is 151 DEG C, cooking pressure 3MPa, when boiling
Between be 5 hours, solid-liquid mass ratio 1:4, the bamboo liquid steamed collects production caulis bambusae in taenian.
Step 3: softening the bamboo slag after the step 2 boiling with the mixture of hydrogen peroxide and sodium hydroxide, soft
It is then fed into wash engine to press master extruding black liquor using helical feed after change and is washed, control its pH after 7~8, washing
It is fed again into press master dehydration concentration, softening bamboo slag, hydrogen peroxide and sodium hydroxide are obtained after concentration and is added by the 15% of bamboo slag amount
Enter, softening temperature is 100 DEG C, and the softening time is 2 hours, solid-liquid mass ratio 1:4.
Step 4: sending the softening bamboo slag into thread rolling machine and carry out thread rolling, and after thread rolling plus water makes concentration of slurry control exist
25%, it is then fed into after highly concentrated mill equipment is polished, polished and is dehydrated concentration, obtain product.
Will be described Step 1: the step 3 and the waste collection of the generation in the step 4 post-processing carry out circulation benefit
With.
Comparative example two
A method of cleaning papermaking bamboo pulp is produced, the difference is that, include the following steps:
Step 1: bamboo chip successively is handled to obtain bamboo slag by slice, removal of impurities and squeezing；
Step 2: with hydrogen peroxide or lye by bamboo slag after the step 2 boiling, the additional amount of hydrogen peroxide or lye is bamboo
The 20% of slag amount is softened, solid-to-liquid ratio 1:4 for boiling 4 hours under the conditions of 160 DEG C；Bamboo slag after softening is sent into and is squeezed
Pulp grinder squeezes out cooking liquor, then is washed through wash engine to pH to 7~8, is then fed into press master and squeezes the water out and is concentrated, most
The moisture content of slurry is 40% afterwards.
After bamboo slag is softened thread rolling by the present invention, polished twice into highly concentrated mill equipment, during the grinding process due to rubbing
The further softening of bamboo silk can be made by wiping heat, although most of lye and hydrogen peroxide in softening process can be removed by washing,
But still have part and remain among raw material, in addition heat release can be generated in subsequent thread rolling and bruting process, if do not fought each other
The concentration of grinding slurry is controlled, and can be damaged to its cellulose, and bamboo slag is carried out two by discovery in research process of the present invention
Secondary polishing, the control of first time slurry mass concentration is 10%, and in addition a slurry mass concentration control can not only be improved 25%
The sophistication of bamboo pulp will not damage alpha-cellulose.Moreover, the processable production of the bamboo liquid generated after boiling
At caulis bambusae in taenian, but resource makes full use of, and improves economic value.
By embodiment one, embodiment two, the bamboo pulp that comparative example one and comparative example two are produced is detected.
1 bamboo pulp parameter comparison of table
Alpha-cellulose content is general and whiteness has direct relationship, and content is higher, and whiteness value is bigger, and the quality of paper is got over
It is high；And the viscosity of paper mainly reflects the average length of the cellulosic molecule of measurement, viscosity is higher, the mean molecule of cellulose
It measures bigger.
As it can be seen from table 1 high by the bamboo pulp alpha-cellulose content that the present invention produces, viscosity is small, it is ensured that the later period
The Paper White Degree produced is high, fine and smooth.
It should be noted that embodiment described above is some embodiments of the present invention.For the technology of this field
For personnel, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to this
The protection scope of invention.
Claims (6)
1. a kind of method for producing cleaning papermaking bamboo pulp, which comprises the steps of:
Step 1: bamboo chip successively is handled to obtain bamboo slag by slice, removal of impurities and squeezing；
Step 2: water is added to carry out boiling bamboo slag；
Step 3: heating and softening the bamboo slag after the step 2 boiling with the mixture of hydrogen peroxide and sodium hydroxide, soft
Extruding black liquor after change, is then washed, and so that pH is fed again into press master dehydration concentration after 7~9, washing, is obtained after concentration
Soften bamboo slag；
Step 4: carrying out thread rolling for the softening bamboo slag, and after thread rolling plus water is successively polished, is dehydrated concentration, obtains preliminary dense
Contracting slurries, the initial concentration slurries are added second of polishing is carried out after water, dehydration is concentrated to get secondary concentration slurries, will be described
Secondary concentration slurries carry out last time dehydration and are concentrated to get product.
2. a kind of method for producing cleaning papermaking bamboo pulp according to claim 1, which is characterized in that in the step 2, bamboo
The boiling temperature of slag is 151 DEG C~160 DEG C, and cooking pressure is 2MPa~5MPa, and digestion time is 4~6 hours, solid-liquid mass ratio
For 1:(3~5).
3. a kind of method for producing cleaning papermaking bamboo pulp according to claim 1, which is characterized in that double in the step 3
The mixture of oxygen water and sodium hydroxide is added by the 10%~25% of bamboo slag amount, and softening temperature is 80 DEG C~100 DEG C, when softening
Between be 1 hour~2 hours, solid-liquid mass ratio 1:(2~4).
4. a kind of method for producing cleaning papermaking bamboo pulp according to claim 1, which is characterized in that the method also includes will
It is described Step 1: the step 3 and the waste collection of the generation in the step 4 post-processing recycled.
5. a kind of method for producing cleaning papermaking bamboo pulp according to claim 1, which is characterized in that in the step 4, rub with the hands
After silk plus its slurry mass concentration of water management is 8%~10%, and initial concentration slurries, which add, to be controlled its slurry mass concentration after water and exist
22%~25%.
6. a kind of method for producing cleaning papermaking bamboo pulp according to claim 1, which is characterized in that, will in the step 2
Generated bamboo liquid is collected for producing caulis bambusae in taenian after bamboo slag boiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548544.6A CN109594383A (en) | 2018-12-18 | 2018-12-18 | A method of producing cleaning papermaking bamboo pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548544.6A CN109594383A (en) | 2018-12-18 | 2018-12-18 | A method of producing cleaning papermaking bamboo pulp |
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| Publication Number | Publication Date |
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| CN109594383A true CN109594383A (en) | 2019-04-09 |
Family
ID=65962962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811548544.6A Pending CN109594383A (en) | 2018-12-18 | 2018-12-18 | A method of producing cleaning papermaking bamboo pulp |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407171A (en) * | 2001-08-17 | 2003-04-02 | 杨三 | Bamboo fibre process |
| WO2004005608A1 (en) * | 2002-07-02 | 2004-01-15 | Andritz, Inc. | Solvent pulping of biomass |
| CN101012628A (en) * | 2007-02-06 | 2007-08-08 | 新邵县广信有限责任公司 | Production technology of thermomechanical bamboo pulp |
| CN101694075A (en) * | 2009-10-16 | 2010-04-14 | 林宣禧 | Low energy consumption clean paper pulp extracting method and papermaking process thereof |
| CN102230286A (en) * | 2011-04-22 | 2011-11-02 | 贵州赤天化纸业股份有限公司 | Process for manufacturing bamboo dissoluble pulp without discharging AOX and dioxin |
| CN106223094A (en) * | 2016-07-29 | 2016-12-14 | 云南新平南恩糖纸有限责任公司 | Mixed pulp paper technology |
| CN107048470A (en) * | 2017-03-22 | 2017-08-18 | 四川理工学院 | It is a kind of for true qualities bamboo pulp of reconstituted tobacco additive and preparation method thereof |
-
2018
- 2018-12-18 CN CN201811548544.6A patent/CN109594383A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407171A (en) * | 2001-08-17 | 2003-04-02 | 杨三 | Bamboo fibre process |
| WO2004005608A1 (en) * | 2002-07-02 | 2004-01-15 | Andritz, Inc. | Solvent pulping of biomass |
| CN101012628A (en) * | 2007-02-06 | 2007-08-08 | 新邵县广信有限责任公司 | Production technology of thermomechanical bamboo pulp |
| CN101694075A (en) * | 2009-10-16 | 2010-04-14 | 林宣禧 | Low energy consumption clean paper pulp extracting method and papermaking process thereof |
| CN102230286A (en) * | 2011-04-22 | 2011-11-02 | 贵州赤天化纸业股份有限公司 | Process for manufacturing bamboo dissoluble pulp without discharging AOX and dioxin |
| CN106223094A (en) * | 2016-07-29 | 2016-12-14 | 云南新平南恩糖纸有限责任公司 | Mixed pulp paper technology |
| CN107048470A (en) * | 2017-03-22 | 2017-08-18 | 四川理工学院 | It is a kind of for true qualities bamboo pulp of reconstituted tobacco additive and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘长恩: "《造纸工业中磨浆理论与设备》", 30 June 1994, 黑龙江科学技术出版社 * |
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Application publication date: 20190409 |