CN114108356B - Papermaking white water anion garbage recycling process - Google Patents
Papermaking white water anion garbage recycling process Download PDFInfo
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- CN114108356B CN114108356B CN202111226318.8A CN202111226318A CN114108356B CN 114108356 B CN114108356 B CN 114108356B CN 202111226318 A CN202111226318 A CN 202111226318A CN 114108356 B CN114108356 B CN 114108356B
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- CN
- China
- Prior art keywords
- white water
- diluent
- anionic trash
- paper
- anionic
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title claims abstract description 16
- 150000001450 anions Chemical class 0.000 title claims abstract description 10
- 125000000129 anionic group Chemical group 0.000 claims abstract description 48
- 238000004513 sizing Methods 0.000 claims abstract description 28
- 239000003085 diluting agent Substances 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 235000013808 oxidized starch Nutrition 0.000 claims abstract description 14
- 239000001254 oxidized starch Substances 0.000 claims abstract description 14
- 238000011221 initial treatment Methods 0.000 claims abstract description 11
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 229920000642 polymer Polymers 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000007781 pre-processing Methods 0.000 claims 1
- 230000000704 physical effect Effects 0.000 abstract description 2
- 238000007865 diluting Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 238000011056 performance test Methods 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 21
- 239000000835 fiber Substances 0.000 description 9
- 239000012895 dilution Substances 0.000 description 7
- 238000010790 dilution Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010893 paper waste Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229920006318 anionic polymer Polymers 0.000 description 1
- 206010003549 asthenia Diseases 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- 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
- D21H21/14—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 characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
Landscapes
- Paper (AREA)
Abstract
The invention provides a papermaking white water anion garbage recycling process, which comprises the following steps: pretreating white water by adopting an anionic garbage collector and active carbon to obtain primary treated white water; then mixing the primary treatment white water with deionized water to prepare a diluent; finally, the diluted solution is mixed with oxidized starch to prepare the surface sizing agent for sizing paper. Through performance test, the once treated white water is used for replacing clean water for diluting the surface sizing liquid, and the anionic trash in the white water is left in the paper sheet together with the sizing agent to leave the paper making system by controlling the consumption of the white water, so that the anionic trash content in the paper making system can be reduced, and when the once treated white water accounts for 70% of the total amount of the diluting liquid, the physical property enhancement amplitude of the surface sizing agent on paper is the largest.
Description
Technical Field
The invention belongs to the technical field of papermaking chemical auxiliary agents, and particularly relates to a papermaking white water anion garbage recycling process.
Background
With the development of large-scale high-speed paper machines and the increasing severity of environmental protection requirements, raw material resources gradually run short and the like, the production cost is reduced, waste paper is largely adopted, and the stability of a wet end system of the paper machine is adversely affected by measures such as improving the closed circulation degree of white water of the paper machine. Particularly in the production of cardboard paper with the utilization rate of waste paper fiber reaching more than 90%, the recycling of the waste paper fiber causes serious strength loss of the fiber and more obstacle substances attached in slurry, the whole wet end environment is more and more complex, and the problem caused by the accumulation of anion garbage is more and more focused.
Anionic trash refers to the sum of all dissolved and anionic polymers (oligomers and polymers) and colloidal anionic species present in the wet end of the paper machine. Due to the requirements of water conservation and environmental protection, the white water sealing degree of the modern paper machine is improved again and again, and because most of suspension and dissolved matters in the white water carry anionic charges, the white water sealing circulation can lead the anionic trash in the system to accumulate more along with the white water circulation, so that serious anionic trash problems can be caused. Although the patent literature of the anionic trash collector is frequently used in the prior art, the addition of a relatively large amount of the anionic trash collector to the slurry reduces electrostatic attraction between the cationic assistant and the fibers to influence the assistant effect due to the charge shielding effect generated by the high charge density of the anionic trash collector, and the excessive use amount of the anionic trash collector can cause the lowering of the pH value of the system and the corrosion of equipment.
Experimental studies have found that when the content of the anionic trash is greater than 0.1%, the filler is greatly reduced, which greatly influences the quality problem of paper, and other problems are caused to influence the production efficiency of the paper machine, such as the increase of the broken times of the paper machine caused by the change of the strength of the paper, so that the running performance of the paper machine is influenced. The formation of anionic trash is complicated and difficult to avoid, and the size of the matters is almost smaller than 10 mu m, so that the anionic trash is one of the problems which are urgently needed to be solved in the current pulping and papermaking.
Disclosure of Invention
In order to solve the defects in the prior art, the invention discloses a papermaking white water anion garbage recycling process, which is used for recycling the treated white water while primarily controlling the anion garbage in the white water.
A papermaking white water anion garbage recycling process comprises the following steps:
pretreating white water by adopting an anionic garbage collector and active carbon to obtain primary treated white water;
Mixing the primary treatment white water with deionized water to prepare a diluent;
the diluted solution is mixed with oxidized starch to prepare a surface sizing agent for sizing paper.
Further, the anionic trash collector is an amphoteric polyacrylamide polymer.
Further, the activated carbon is a fibrous activated carbon layer.
Further, the primary treatment white water accounts for 10% -90% of the total amount of the diluent.
Further, the primary treatment white water accounts for 70% of the total amount of the diluent.
Further, the mixing method of the diluent and the oxidized starch comprises the following steps: firstly, placing the diluent on a magnetic stirrer to heat to 50 ℃, then dispersing oxidized starch into the diluent to stir uniformly, heating to 80 ℃, and preserving heat for 1h.
Further, the concentration of the surface sizing agent is 4% -10%.
Compared with the prior art, the invention has the following beneficial effects:
The recycling process of the invention meets the requirements of the papermaking pulping process by primarily controlling the anion garbage in the white water, and simultaneously uses the primarily treated white water as a diluent to dilute the surface sizing agent, thereby further enhancing the strength of the prepared paper.
Detailed Description
The invention is further described below. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Example 1
In one embodiment, a process for recycling papermaking white water anionic trash comprises the following steps:
The white water filtered by the multi-disc filter is added with 0.05% of amphoteric polyacrylamide polymer (relative to the total mass of the white water) to primarily capture anionic trash in the white water, then the white water is adsorbed with colored substances and other impurities by 3% (relative to the total mass of the white water) of a fiber activated carbon screen, and the content of the anionic trash in the white water after primary treatment is reduced to a very low degree, but if the anionic trash is directly used as a thinner of a surface sizing agent, the concentration of the anionic trash is too high, and the quality of paper is greatly influenced.
10G of once treated white water and 90g of deionized water are weighed and uniformly stirred to prepare a diluent.
The dilution was heated to 50 ℃ on a magnetic stirrer.
4G of oxidized starch is dispersed into the diluent, stirred uniformly, heated to 80 ℃, and kept for 1h to prepare the surface sizing agent.
Example 2
In one embodiment, a process for recycling papermaking white water anionic trash comprises the following steps:
The white water filtered by the multi-disc filter is added with 0.05% of amphoteric polyacrylamide polymer (relative to the total mass of the white water) to primarily capture anionic trash in the white water, then the white water is adsorbed with colored substances and other impurities by 3% (relative to the total mass of the white water) of a fiber activated carbon screen, and the content of the anionic trash in the white water after primary treatment is reduced to a very low degree, but if the anionic trash is directly used as a thinner of a surface sizing agent, the concentration of the anionic trash is too high, and the quality of paper is greatly influenced.
30G of once treated white water and 70g of deionized water are weighed and evenly stirred to prepare a diluent.
The dilution was heated to 50 ℃ on a magnetic stirrer.
Dispersing 6g of oxidized starch into the diluent, uniformly stirring, heating to 80 ℃, and preserving heat for 1h to prepare the surface sizing agent.
Example 3
In one embodiment, a process for recycling papermaking white water anionic trash comprises the following steps:
The white water filtered by the multi-disc filter is added with 0.05% of amphoteric polyacrylamide polymer (relative to the total mass of the white water) to primarily capture anionic trash in the white water, then the white water is adsorbed with colored substances and other impurities by 3% (relative to the total mass of the white water) of a fiber activated carbon screen, and the content of the anionic trash in the white water after primary treatment is reduced to a very low degree, but if the anionic trash is directly used as a thinner of a surface sizing agent, the concentration of the anionic trash is too high, and the quality of paper is greatly influenced.
50G of once treated white water and 50g of deionized water are weighed and uniformly stirred to prepare a diluent.
The dilution was heated to 50 ℃ on a magnetic stirrer.
8G of oxidized starch is dispersed into the diluent, stirred uniformly, heated to 80 ℃, and kept for 1h to prepare the surface sizing agent.
Example 4
In one embodiment, a process for recycling papermaking white water anionic trash comprises the following steps:
the white water filtered by the multi-disc filter is added with 0.05% of amphoteric polyacrylamide polymer (relative to the total mass of the white water) to primarily capture anionic trash in the white water, then the white water is adsorbed with colored substances and other impurities by 3% (relative to the total mass of the white water) of a fiber activated carbon screen, and the content of the anionic trash in the white water after primary treatment is reduced to a very low degree, but if the anionic trash is directly used as a thinner of a surface sizing agent, the concentration of the anionic trash is too high, and the quality of paper is greatly influenced.
70G of once treated white water and 30g of deionized water are weighed and evenly stirred to prepare a diluent.
The dilution was heated to 50 ℃ on a magnetic stirrer.
Dispersing 5g of oxidized starch into the diluent, uniformly stirring, heating to 80 ℃, and preserving heat for 1h to prepare the surface sizing agent.
Example 5
In one embodiment, a process for recycling papermaking white water anionic trash comprises the following steps:
The white water filtered by the multi-disc filter is added with 0.05% of amphoteric polyacrylamide polymer (relative to the total mass of the white water) to primarily capture anionic trash in the white water, then the white water is adsorbed with colored substances and other impurities by 3% (relative to the total mass of the white water) of a fiber activated carbon screen, and the content of the anionic trash in the white water after primary treatment is reduced to a very low degree, but if the anionic trash is directly used as a thinner of a surface sizing agent, the concentration of the anionic trash is too high, and the quality of paper is greatly influenced.
90G of once treated white water and 10g of deionized water are weighed and uniformly stirred to prepare a diluent.
The dilution was heated to 50 ℃ on a magnetic stirrer.
10G of oxidized starch is dispersed into the diluent, stirred uniformly, heated to 80 ℃, and kept for 1h to prepare the surface sizing agent.
Comparative example 1
Unlike example 4, 100g deionized water and 5g oxidized starch were directly used to prepare a surface sizing agent.
Comparative example 2
Unlike example 4, 100g of primary treated white water and 5g of oxidized starch were directly used to prepare a surface sizing agent.
Test example 1
The surface sizing agents prepared in examples 1 to 5 and comparative examples 1 to 2 were surface sized on 70g/m 2 paper, the strength of the paper was tested, and the experimental results are recorded in table 1:
As can be seen from table 1, the use of the once-treated white water instead of clean water for the dilution of the surface sizing solution, the anionic trash in the white water was left in the sheet together with the sizing agent to leave the papermaking system by controlling the amount of the white water, thereby reducing the anionic trash content in the papermaking system, and the surface sizing agent was the most enhanced in physical properties to the paper when the once-treated white water was 70% of the total amount of the dilution.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (2)
1. The papermaking white water anion garbage recycling process is characterized by comprising the following steps of:
the method comprises the steps of (1) preprocessing white water filtered by a multi-disc filter by adopting an anionic garbage collector and active carbon to obtain primary processed white water;
Mixing the primary treatment white water with deionized water to prepare a diluent;
mixing the diluent with oxidized starch to prepare a surface sizing agent for sizing paper;
The activated carbon is a fibrous activated carbon layer, and the dosage of the activated carbon is 3% relative to the total mass of white water;
The primary treatment white water accounts for 70% of the total amount of the diluent;
the anionic trash catcher is an amphoteric polyacrylamide polymer, and the dosage of the anionic trash catcher is 0.05% relative to the total mass of white water;
the mixing method of the diluent and the oxidized starch comprises the following steps: firstly, placing the diluent on a magnetic stirrer to be heated to 50 ℃, then dispersing oxidized starch into the diluent to be uniformly stirred, heating to 80 ℃, and preserving heat for 1h.
2. The process for recycling papermaking white water anionic trash according to claim 1, wherein the concentration of the surface sizing agent is 4% -10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111226318.8A CN114108356B (en) | 2021-10-21 | 2021-10-21 | Papermaking white water anion garbage recycling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111226318.8A CN114108356B (en) | 2021-10-21 | 2021-10-21 | Papermaking white water anion garbage recycling process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114108356A CN114108356A (en) | 2022-03-01 |
| CN114108356B true CN114108356B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111226318.8A Active CN114108356B (en) | 2021-10-21 | 2021-10-21 | Papermaking white water anion garbage recycling process |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963951A (en) * | 2012-11-28 | 2013-03-13 | 大连东泰产业废弃物处理有限公司 | Method for treating papermaking wastewater |
| CN103193930A (en) * | 2013-03-08 | 2013-07-10 | 华南理工大学 | Method for preparing amphoteric polyacrylamide emulsion capable of improving waste paper fine fiber strength |
| CN103420542A (en) * | 2013-08-12 | 2013-12-04 | 山东绿泉环保工程有限公司 | Wastewater recycling process for waste paper pulping and manufacturing bobbin paper |
| CN104986916A (en) * | 2015-06-08 | 2015-10-21 | 河北先达环保工程有限公司 | Process for treating coating waste water of paper making |
| CN105198116A (en) * | 2015-08-31 | 2015-12-30 | 南京林业大学 | Method for reducing wastewater generation during clean papermaking |
| CN106049176A (en) * | 2016-07-15 | 2016-10-26 | 东莞顺裕纸业有限公司 | Surface sizing technology of high-strength corrugated medium paper |
| CN107513879A (en) * | 2017-10-23 | 2017-12-26 | 南京林业大学 | A kind of recycling reuse method of mthod of white water from paper making anionic trash |
| CN107746085A (en) * | 2017-12-05 | 2018-03-02 | 广东省造纸研究所 | A kind of paper-making waste water treating agent and its method for handling paper waste |
| CN109594387A (en) * | 2018-12-28 | 2019-04-09 | 江苏理文造纸有限公司 | A kind of plain boiled water processing method of papermaking green end |
| CN112301780A (en) * | 2020-09-18 | 2021-02-02 | 江苏理文造纸有限公司 | Anionic garbage control process for papermaking system |
-
2021
- 2021-10-21 CN CN202111226318.8A patent/CN114108356B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963951A (en) * | 2012-11-28 | 2013-03-13 | 大连东泰产业废弃物处理有限公司 | Method for treating papermaking wastewater |
| CN103193930A (en) * | 2013-03-08 | 2013-07-10 | 华南理工大学 | Method for preparing amphoteric polyacrylamide emulsion capable of improving waste paper fine fiber strength |
| CN103420542A (en) * | 2013-08-12 | 2013-12-04 | 山东绿泉环保工程有限公司 | Wastewater recycling process for waste paper pulping and manufacturing bobbin paper |
| CN104986916A (en) * | 2015-06-08 | 2015-10-21 | 河北先达环保工程有限公司 | Process for treating coating waste water of paper making |
| CN105198116A (en) * | 2015-08-31 | 2015-12-30 | 南京林业大学 | Method for reducing wastewater generation during clean papermaking |
| CN106049176A (en) * | 2016-07-15 | 2016-10-26 | 东莞顺裕纸业有限公司 | Surface sizing technology of high-strength corrugated medium paper |
| CN107513879A (en) * | 2017-10-23 | 2017-12-26 | 南京林业大学 | A kind of recycling reuse method of mthod of white water from paper making anionic trash |
| CN107746085A (en) * | 2017-12-05 | 2018-03-02 | 广东省造纸研究所 | A kind of paper-making waste water treating agent and its method for handling paper waste |
| CN109594387A (en) * | 2018-12-28 | 2019-04-09 | 江苏理文造纸有限公司 | A kind of plain boiled water processing method of papermaking green end |
| CN112301780A (en) * | 2020-09-18 | 2021-02-02 | 江苏理文造纸有限公司 | Anionic garbage control process for papermaking system |
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| Publication number | Publication date |
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| CN114108356A (en) | 2022-03-01 |
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