CN114808526A - Application method of concentrated high-activity polyether defoamer in paper production system - Google Patents
Application method of concentrated high-activity polyether defoamer in paper production system Download PDFInfo
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- CN114808526A CN114808526A CN202210565340.3A CN202210565340A CN114808526A CN 114808526 A CN114808526 A CN 114808526A CN 202210565340 A CN202210565340 A CN 202210565340A CN 114808526 A CN114808526 A CN 114808526A
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- white water
- concentrated high
- storage tank
- activity polyether
- paper
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- 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
- D21H21/12—Defoamers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
Abstract
The invention discloses an application method of a concentrated high-activity polyether defoamer in a paper production system, wherein the paper production system comprises a white water system and a surface sizing system, and the application method comprises the following steps: step one; obtaining a concentrated high-activity polyether defoaming agent, and respectively storing the concentrated high-activity polyether defoaming agent in a storage tank I and a storage tank II; step two; communicating the concentrated high-activity polyether defoaming agent in the storage tank I with a white water system through a pipeline; step three; communicating the concentrated high-activity polyether defoaming agent in the storage tank II with a surface adhesive system through a pipeline; when the concentrated high-activity polyether defoamer is used for a white water system and a surface glue system, the surface tension of water is greatly reduced, so that bubbles in the water are broken and reduced, the bubble content in the process is effectively reduced, no bubble in the paper process is ensured, the bubble point of the paper surface is reduced, the bubble-free paper can be produced, and the production quality of the paper is improved.
Description
Technical Field
The invention relates to the technical field of papermaking, in particular to an application method of a concentrated high-activity polyether defoamer for a paper production system.
Background
In the process of making paper from waste paper, the fibers of the waste paper are shorter and shorter due to the recycling of the waste paper; fine fibers can easily pass through the meshes along with white water in the process of forming pulp on a net, so that the papermaking white water contains a large amount of fine fibers, the fine fibers have strong air adsorption capacity, and meanwhile, the white water enters a white water barrel and has large fall so as to be easily brought into air; in addition, some auxiliary materials are added during the paper making process, some of these auxiliary materials also enter the white water system, and these auxiliary material particles are very prone to absorb air. The surface sizing glue solution contains a surface sizing agent, so that the surface sizing glue solution contains a plurality of active agents, and the backflow of the added glue solution has large difference, so that a large amount of foams are generated in the production process, the foams are slightly wasted due to full materials and the like, paper is broken or broken together due to serious conditions, and even shutdown production is caused in serious conditions, so that the production efficiency and the product quality are influenced at present.
The existing solution is to apply the defoaming agent to a paper production system to achieve the purpose of eliminating bubbles in paper pulp; however, the effect achieved by the current application method is not good, and the paper pulp still has bubbles, so that the produced paper is still paper with a large number of bubble points, and the quality of the produced paper is not good.
Disclosure of Invention
The invention aims to: provides an application method of a concentrated high-activity polyether defoamer in a paper production system, and aims to solve the problems that the currently produced paper is paper with a large number of bubble points and the quality of the produced paper is poor.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the application method of the concentrated high-activity polyether defoamer in a paper production system comprises a white water system and a surface sizing system, and comprises the following steps:
step one; obtaining a concentrated high-activity polyether defoaming agent, and respectively storing the concentrated high-activity polyether defoaming agent in a storage tank I and a storage tank II;
step two; communicating the concentrated high-activity polyether defoaming agent in the storage tank I with a white water system through a pipeline;
step three; and communicating the concentrated high-activity polyether defoaming agent in the storage tank II with the surface adhesive system through a pipeline.
Preferably, the white water system comprises a surface layer white water bucket, a core layer white water bucket, a bottom layer white water bucket and a core bottom layer overflow white water tank, wherein the storage tank I is communicated with the surface layer white water bucket, the core layer white water bucket, the bottom layer white water bucket and the core bottom layer overflow white water tank through pipelines.
Preferably, the storage tank I is communicated with a pipeline main way I, the pipeline main way I is provided with a flow meter I, the output end of the pipeline main way I is connected with four branch ways I, and the output ends of the four branch ways I are respectively communicated with the surface layer white water bucket, the core layer white water bucket, the bottom layer white water bucket and the core bottom layer overflow white water tank.
Preferably, a first output pump is mounted on a first pipeline between the first storage tank and the first flowmeter.
Preferably, the surface glue system comprises a surface glue solution feeding groove, and the storage tank II is communicated with the surface glue solution feeding groove through a pipeline.
Preferably, a second flowmeter is installed on a pipeline between the second storage tank and the second surface glue solution feeding tank.
Preferably, a second output pump is mounted on a pipeline between the second storage tank and the second flowmeter.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
when the concentrated high-activity polyether defoamer is used for a white water system and a surface glue system, the surface tension of water is greatly reduced, bubbles in the water are broken and reduced, so that the bubble content in the process is effectively reduced, no bubble is ensured in the paper process, the bubble point on the paper surface is reduced, and thus bubble-free paper can be produced, and the production quality of the paper is improved.
Drawings
FIG. 1 is a process flow diagram of the present invention;
Detailed Description
The invention is further illustrated by the following examples. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Referring to fig. 1, the application method of the concentrated high-activity polyether defoamer in the paper production system comprises a white water system and a surface adhesive system, wherein a starch spraying storage tank, a warm water tank, a squeezer, a dryer and the like are arranged between the white water system and the surface adhesive system, and the production of paper can be completed through the steps;
the application method comprises the following steps:
step one; the method comprises the steps of obtaining a concentrated high-activity polyether defoaming agent, respectively storing the concentrated high-activity polyether defoaming agent in a storage tank I and a storage tank II, and through mutual matching of the storage tank I and the storage tank II, conveniently storing the obtained concentrated high-activity polyether defoaming agent so as to be used in the next link;
step two; communicating the concentrated high-activity polyether defoaming agent in the storage tank I with a white water system through a pipeline; the white water system comprises a surface layer white water bucket, a core layer white water bucket, a bottom layer white water bucket and a core bottom layer overflow white water tank, wherein a storage tank I is communicated with the surface layer white water bucket, the core layer white water bucket, the bottom layer white water bucket and the core bottom layer overflow white water tank through pipelines, and foam in the surface layer white water bucket, the core layer white water bucket, the bottom layer white water bucket and the core bottom layer overflow white water tank can be eliminated through a concentrated high-activity polyether defoaming agent, so that the condition that the foam affects subsequent paper processing is avoided;
step three; communicating the concentrated high-activity polyether defoaming agent in the storage tank II with a surface adhesive system through a pipeline; the surface sizing system comprises a surface sizing solution feeding groove, the storage tank II is communicated with the surface sizing solution feeding groove through a pipeline, foam in the surface sizing solution feeding groove can be fed through the concentrated high-activity polyether defoaming agent, the bubble point of the paper surface is reduced, and therefore the paper without bubbles is produced;
specifically, when the concentrated high-activity polyether defoamer is used for a white water system and a surface glue system, the surface tension of water is greatly reduced, so that bubbles in the water are broken and reduced, the bubble content in the process is effectively reduced, no bubble in the paper process is ensured, the bubble point on the paper surface is reduced, and therefore bubble-free paper can be produced, the paper is more attractive, and the production quality of the paper is improved; in addition, the quality of the new finished paper is higher, the production efficiency is correspondingly improved, various consumptions are correspondingly lower, the paper is more environment-friendly, and the cost is lower;
further, as shown in fig. 1, a first pipeline main is communicated with the first storage tank, a first flow meter is installed on the first pipeline main, the output end of the first pipeline main is connected with a first four branches, and the output ends of the first four branches are respectively communicated with the surface layer white water bucket, the core layer white water bucket, the bottom layer white water bucket and the core bottom layer overflow white water tank;
specifically, the concentrated high-activity polyether defoaming agent in the storage tank I can be communicated with the surface layer white water tank, the core layer white water tank, the bottom layer white water tank and the core bottom layer overflow white water tank through the mutual matching of the four branches I; through the mutual matching of the first flowmeter and the first pipeline main path, the total amount of the concentrated high-activity polyether defoaming agent conveyed to the surface layer white water bucket, the core layer white water bucket, the bottom layer white water bucket and the core bottom layer overflow white water bucket can be intuitively known through observing the first flowmeter, so that the use amount of the concentrated high-activity polyether defoaming agent can be conveniently controlled;
further, as shown in fig. 1, a first output pump is installed on a first pipeline between the first storage tank and the first flowmeter;
specifically, the concentrated high-activity polyether defoaming agent can be conveniently conveyed to the surface layer white water bucket, the core layer white water bucket, the bottom layer white water bucket and the core bottom layer overflow white water tank through the first output pump, and the concentrated high-activity polyether defoaming agent is convenient to convey;
further, as shown in fig. 1, a second flowmeter is mounted on a pipeline between the second storage tank and the second surface glue solution feeding tank;
specifically, the dosage of the concentrated high-activity polyether defoaming agent in the storage tank II conveyed to the surface glue solution feeding trough can be conveniently and visually observed through the flow meter II, and the dosage of the concentrated high-activity polyether defoaming agent can be conveniently controlled;
further, as shown in fig. 1, a second output pump is installed on a pipeline between the second storage tank and the second flowmeter;
specifically, the concentrated high-activity polyether defoaming agent in the storage tank II can be conveniently and rapidly output to the surface glue solution feeding groove through the output pump II, so that the concentrated high-activity polyether defoaming agent is conveniently transmitted.
The invention adopts the concentrated high-activity polyether defoamer, the defoamer can greatly reduce the surface tension of water, and the detection shows that: the mN/m of the water is reduced by half compared with 72.75mN/m of pure water, about 35mN/m, and the water is easy to break foams; meanwhile, the pH value (stock solution, 25 ℃) of the defoaming agent is 4-8, the defoaming agent is very suitable for the pH value of a papermaking process, the specific gravity (25 ℃) is 0.95-1.00, the specific gravity is close to that of water, the viscosity (RVTSP2/50rpm,25 ℃) is less than 1000cps, and the defoaming agent is convenient to mix in water.
On a PM15 paper machine, the bubble point of the new product paper reaches 0/10 m (10/10 m originally) of the paper surface through detection of the paper prepared by the paper pulp obtained by the invention; the paper with fewer bubble points on the finished paper surface is produced, the quality of the new finished paper is higher, the production efficiency is correspondingly improved, various consumptions are correspondingly lower, the paper is more environment-friendly, the cost is lower, and the requirements of environment protection and market are better met.
The above is for the present invention: the application of the concentrated high activity polyether defoamer to paper making systems is illustrated to help understanding the present invention, but the embodiments of the present invention are not limited by the above examples, and any changes, modifications, substitutions, combinations, and simplifications which do not depart from the principle of the present invention are equivalent replacements and are included in the protection scope of the present invention.
Claims (7)
1. An application method of a concentrated high-activity polyether defoamer for a paper production system, wherein the paper production system comprises a white water system and a surface sizing system, and the application method comprises the following steps:
step one; obtaining a concentrated high-activity polyether defoaming agent, and respectively storing the concentrated high-activity polyether defoaming agent in a storage tank I and a storage tank II;
step two; communicating the concentrated high-activity polyether defoaming agent in the storage tank I with a white water system through a pipeline;
step three; and communicating the concentrated high-activity polyether defoaming agent in the storage tank II with the surface adhesive system through a pipeline.
2. The method as claimed in claim 1, wherein the white water system comprises a surface layer white water tank, a core layer white water tank, a bottom layer white water tank and a core bottom layer overflow white water tank, and the storage tank is communicated with the surface layer white water tank, the core layer white water tank, the bottom layer white water tank and the core bottom layer overflow white water tank through pipelines.
3. The method as claimed in claim 2, wherein the first storage tank is communicated with a first pipeline, the first pipeline is provided with a first flow meter, the output end of the first pipeline is connected with four first branches, and the output ends of the four first branches are respectively communicated with the surface layer white water bucket, the core layer white water bucket, the bottom layer white water bucket and the core bottom layer overflow white water tank.
4. The method for applying the concentrated high-activity polyether defoamer to the paper production system as claimed in claim 3, wherein a first output pump is mounted on a first pipeline between the first storage tank and the first flow meter.
5. The application method of the concentrated high-activity polyether defoamer for the paper production system as claimed in claim 1, wherein the surface sizing system comprises a surface sizing solution feeding tank, and the storage tank II is communicated with the surface sizing solution feeding tank through a pipeline.
6. The application method of the concentrated high-activity polyether defoamer for paper production systems as claimed in claim 5, wherein a second flow meter is installed on a pipeline between the second storage tank and the feeding tank for surface cement.
7. The application method of the concentrated high-activity polyether defoamer for paper production systems as claimed in claim 6, wherein a second output pump is installed on a pipeline between the second storage tank and the second flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210565340.3A CN114808526A (en) | 2022-05-23 | 2022-05-23 | Application method of concentrated high-activity polyether defoamer in paper production system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210565340.3A CN114808526A (en) | 2022-05-23 | 2022-05-23 | Application method of concentrated high-activity polyether defoamer in paper production system |
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| CN114808526A true CN114808526A (en) | 2022-07-29 |
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| CN202210565340.3A Pending CN114808526A (en) | 2022-05-23 | 2022-05-23 | Application method of concentrated high-activity polyether defoamer in paper production system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005133240A (en) * | 2003-10-30 | 2005-05-26 | Daio Paper Corp | Method for controlling dissolved gas amount in white water for papermaking machine |
| CN101158131A (en) * | 2007-11-13 | 2008-04-09 | 南京四新科技应用研究所有限公司 | Defoaming agent for linerboard paper making |
| CN208088008U (en) * | 2018-04-20 | 2018-11-13 | 广东理文卫生用纸有限公司 | A kind of defoaming system for plain boiled water processing |
| CN109853296A (en) * | 2019-01-08 | 2019-06-07 | 广东理文造纸有限公司 | A kind of preparation method of antibacterial cleaning paper |
| CN111979843A (en) * | 2020-08-24 | 2020-11-24 | 山鹰国际控股股份公司 | Wet-end papermaking process for improving surface smoothness of paper |
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2022
- 2022-05-23 CN CN202210565340.3A patent/CN114808526A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005133240A (en) * | 2003-10-30 | 2005-05-26 | Daio Paper Corp | Method for controlling dissolved gas amount in white water for papermaking machine |
| CN101158131A (en) * | 2007-11-13 | 2008-04-09 | 南京四新科技应用研究所有限公司 | Defoaming agent for linerboard paper making |
| CN208088008U (en) * | 2018-04-20 | 2018-11-13 | 广东理文卫生用纸有限公司 | A kind of defoaming system for plain boiled water processing |
| CN109853296A (en) * | 2019-01-08 | 2019-06-07 | 广东理文造纸有限公司 | A kind of preparation method of antibacterial cleaning paper |
| CN111979843A (en) * | 2020-08-24 | 2020-11-24 | 山鹰国际控股股份公司 | Wet-end papermaking process for improving surface smoothness of paper |
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