CN103469676B - Filler treatment process and paper technology - Google Patents
Filler treatment process and paper technology Download PDFInfo
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- CN103469676B CN103469676B CN201310402998.3A CN201310402998A CN103469676B CN 103469676 B CN103469676 B CN 103469676B CN 201310402998 A CN201310402998 A CN 201310402998A CN 103469676 B CN103469676 B CN 103469676B
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Abstract
The present invention relates to a kind of filler treatment process, it comprises the steps: starch and filler grain to introduce in air-flow; In described air-flow, introduce steam to absorb water swollen, gelatinization wrap up described filler grain to form starch-filler complex to make described starch.The invention still further relates to a kind of paper technology.Described filler treatment process and paper technology absorb water moistening and gelatinization in the process of air current flow to wrap up filler grain by starch and the filler grain mode be incorporated in air-water mixed system being made starch, by such mode, greatly can increase the mixing uniformity of starch and filler grain, thus obtain domain size distribution more uniform starch-filler complex.
Description
Technical field
The present invention relates to a kind of filler treatment process and paper technology.
Background technology
In paper industry, in order to save slurry, reduce costs, the mode usually adopted in paper, adds filler to replace Activities of Some Plants fiber, so not only can reach saving slurry, the object reduced the cost, but also the serviceability that paper can be improved.
At present, the main addition manner of filler is directly added in paper pulp at papermaking green end, but, all can there is following problem adding after in paper pulp in filler: on the one hand, after filler adds and enters paper pulp, due to the physical characteristic of self, filler self not only cannot and paper fibre between formed and effectively combine, but also the adhesion can destroyed between paper fibre, thus cause the intensity of the paper of manufacturing paper with pulp out lower than the intensity of not adding the paper that filler manufactures paper with pulp out; On the other hand, the particle diameter of papermaking filler particle is all very little, average particle diameter only has several microns, and because the adhesion between filler and paper fibre is very poor, in the process of paper making, filler easily through forming web along with plain boiled water run off, cause the retention of filler in paper not high, so not only can not reach the object of adding filler, and a large amount of fillers is retained in white-water system, also can have a negative impact to overall green end.
Therefore, the retention that how can improve filler is one of target of laying siege to of industry.
Summary of the invention
In view of this, provide a kind of filler treatment process that can solve the problem and paper technology real in necessary.
A kind of filler treatment process, it comprises the steps: starch and filler grain to be incorporated in air-flow, rolls to make described starch and described filler grain, moves; In described air-flow, introducing steam, described starch water suction swollen, gelatinization are also final wraps up described filler grain to form starch-filler complex to make.
Preferably, starch and filler grain are introduced step in air-flow by described starch and filler grain are introduced air and powder mixer to carry out.
Preferably, described air-flow is air stream or inert gas flow.
Preferably, the mass ratio of described starch and filler grain is 1:0.5 ~ 10.
Preferably, in described air-flow, introducing steam to make described starch water suction swollen, gelatinization also finally wrap up described filler grain to form starch-filler complex is by realizing directly to introducing the steam of temperature more than the gelatinization point of described starch in described air-flow.
Preferably, in described air-flow, introduce steam realize as follows to form starch-filler complex to make absorb water swollen, gelatinization the described filler grain of final parcel of described starch: first in described air-flow, introduce the steam of temperature below described starch atomization temperature be in air-water mixed system to make described starch and filler grain, described starch is absorbed water in the process of air motion swollen be attached to the surface of filler grain; Afterwards, regulate the temperature of described air-water mixed system to make described starch gelatinization and to wrap up described filler grain to form starch-filler complex.
Preferably, the temperature range of described steam is 53 DEG C ~ 120 DEG C.
Preferably, the duration of introducing described steam in described air-flow is 1 ~ 30min.
Preferably, after formation described starch-filler complex, the step utilizing weight pneumatic concentration or screening mode to collect described starch-filler complex is also comprised further.
A kind of paper technology, it comprises the steps: to process to obtain starch-filler complex to filler grain according to filler treatment process as above; And described starch-filler complex to be joined in paper pulp to obtain mixing slurry, utilize described mixing slurry to manufacture paper with pulp paper.
Compared with prior art, above-mentioned filler treatment process provided by the present invention and paper technology, moistening and gelatinization absorb water in the process of air current flow to wrap up filler grain by starch and the filler grain mode be incorporated in air-water mixed system being made starch, by such mode, greatly can increase the mixing uniformity of starch and filler grain, thus obtain domain size distribution more uniform starch-filler complex.When this starch-filler complex is used for papermaking: on the one hand, relative to filler grain, be coated on after gelatinization between the starch on filler grain surface and fiber and there is good adhesion, therefore, the gelatinized starch by being coated on filler grain surface can increase the adhesion between filler grain and fiber; On the other hand, due to the parcel of gelatinized starch, the particle diameter of filler grain is increased greatly, reduce filler through forming web along with the possibility that plain boiled water runs off.Therefore, the retention rate of filler can be made to be promoted significantly.
Detailed description of the invention
The filler treatment process that embodiment of the present invention provides, it comprises the steps:
S1, introduces in air-flow by starch and filler grain;
In the present embodiment, step S1 realizes by described starch and filler grain being incorporated in air and powder mixer.Air and powder mixer be used in pulverized-coal fired boiler mixed coal powder and burning required air conventional mixing arrangement, its structure does not repeat them here.
In the present embodiment, starch and filler grain are incorporated into after in air and powder mixer, under the effect of air stream, starch and filler grain roll along with being flowing in air and powder mixer of air stream, thus starch is disperseed fully with filler grain, mix.
Understandable, the blast of described air stream can set flexibly according to the addition of starch and filler grain, as long as can ensure that starch and filler grain can roll, move in air and powder mixer.
Understandable, in the present invention, described air-flow is not limited to air stream, can also be the gas that inert gas flow etc. does not react with starch or filler grain.
Understandable, before described starch and filler grain are incorporated in air-flow, described starch and filler grain can be the mixtures be pre-mixed, and also can be unmixing a single states.Of course, when described starch and filler grain are when being incorporated in air-flow respectively with unmixing a single state, the order that described starch and filler grain are introduced in air-flow not special restriction, described starch and filler grain can be introduced at the same time in air-flow, also can are successively incorporated in air-flow.
In this step, preferably, the mass ratio of starch and filler grain is 1:0.5 ~ 10, and namely the starch of 1 parts by mass can be arranged in pairs or groups with the filler grain of 0.5 ~ 10 parts by mass.
Further, the mass ratio of starch and filler grain is 1:1 ~ 4, and namely the starch of 1 parts by mass can be arranged in pairs or groups with the filler grain of 1 ~ 4 parts by mass.
Of course, in the present invention, the use amount of described starch and filler grain is not limited to above-mentioned scope, and those skilled in the art can adjust above-mentioned scope according to actual conditions.
S2, in described air-flow, introducing steam, described starch water suction swollen, gelatinization are also final wraps up described filler grain to form starch-filler complex to make.
It should be noted that, in the present invention, so-called " steam " refers to the water in atomization or vapor state, and wherein, the water of so-called spray pattern, refer to the aerial trickle water droplet that can suspend, the water of so-called vapor state refers to steam.
As known to those skilled in the art, so-called atomization, becomes tiny particle by liquid crushing exactly.The atomization of liquid is carried out in atomizer or nozzle, and nozzle situation is varied, but the atomization process of liquid is all substantially identical in physical essence.Make the liquid atomization, first spreading liquid must be become very thin liquid film or very thin jet, allow liquid by the road generate film of particular design or thin jet, stream can be narrow slit, groove or aperture, or by eddy flow, liquid is extended in metal surface thinning, or by metal or revolve cup and do high speed rotary motion and drive liquid generate film, then utilize various disturbance, or at the volley due to the effect of power, make liquid film jet unstability, and then be fragmented into strand and large drop, be finally broken into droplet.It has been generally acknowledged that the most effective way realizing the atomization of liquid improves the relative velocity between liquid and surrounding air.Generally, relative velocity is higher, and the average diameter of drop is less.In order to obtain large relative velocity, a class nozzle sprays in low-speed motion or static medium, as emple hole, swirl atomizer, swivel nozzle by liquid fuel with higher speed.Another kind of, be the gas medium liquid of low-speed motion being placed in versus high motion, as pneumatic nozzle.
From the atomizing principles of water, the atomization process of water is water is the process of fine particle by large continuous print liquid crushing, in the process, does not relate to the temperature of water.
Generally, the gelatinization point of starch is generally more than 53 DEG C, therefore, after introduce the steam of more than 53 DEG C in the air-flow being suspended with starch and filler grain, to absorb water after running into steam swollen at starch in air-flow, starch simultaneously after water suction swollen is heated and gelatinization occurs and causes viscosity to rise and volumetric expansion: on the one hand, and after starch gelatinization, viscosity rising and volumetric expansion can be wrapped up the filler grain around it and form particle diameter larger starch-filler complex; On the other hand, under the effect of air-flow, can constantly there is filler grain to collide and adhere on the larger starch-filler complex of the particle diameter that formed due to starch gelatinization, thus making the particle diameter of starch-filler complex become larger.
In the present invention, the temperature based on the steam passed through in air-flow is different, and step S2 can be divided into following two kinds of situations to carry out:
The first situation, when the temperature of the steam introduced in air-flow is below the gelatinization point of starch, step S2 can carry out step by step, that is: first in the air-flow being suspended with starch and filler grain, introduce steam to be in air-water mixed system to make described starch and filler grain, make described starch absorb water swollen to stick to the surface of filler grain in the process of air motion; Afterwards, then regulate the temperature of whole air-water mixed system to be heated gelatinization to form starch-filler complex to the starch after making water suction swollen.
The second situation, time more than the gelatinization point of the steam introduced in air-flow at starch, after formation air-water mixed system, can regulate the temperature of described air-water mixed system, just can make to be in the described starch water suction swollen in described air-water mixed system, gelatinization the described filler grain of final parcel to form starch-filler complex.
In the present embodiment, step S2 adopts the second way, also namely by realizing directly to the mode of the steam introducing 53 DEG C ~ 120 DEG C in the air-flow being suspended with starch and filler grain.
Further, step S2 is by realizing directly to the mode of the steam introducing 80 DEG C ~ 100 DEG C in the air-flow being suspended with starch and filler grain.
Can select, based on considering of energy consumption aspect, be 1 ~ 30min to the described duration being suspended with in the air-flow of starch and filler grain the steam introducing more than 53 DEG C.
Preferably, to be suspended with in the air-flow of starch and filler grain duration of steam of introducing more than 53 DEG C be 10min to described.
Further, after formation described starch-filler complex, the step that described starch-filler complex is collected also is comprised.
In the present embodiment, the following two kinds mode is comprised to the mode that described starch-filler complex is collected.
The first, weight pneumatic concentration is adopted to collect described starch-filler complex: along with the formation of starch-filler complex and the increase gradually of particle diameter, its quality also increases thereupon, therefore, can by controlling the size of air-flow blast, starch-filler complex can be fallen after rise under gravity after reaching predetermined quality, thus realize the collection of starch-filler complex.
The second, utilizes the conventional screening mode in this areas such as screen cloth to collect starch-filler complex.
Present invention also offers a kind of paper technology, it comprises the steps: to process to obtain starch-filler complex to filler grain according to filler treatment process as above; And described starch-filler complex to be joined in paper pulp to obtain mixing slurry, utilize described mixing slurry to manufacture paper with pulp paper.
Compared with prior art, above-mentioned filler treatment process provided by the present invention and paper technology, it utilizes air-flow to mix to make starch with filler grain, simultaneously, superheated vapor is incorporated in said flow and makes starch absorb water moistening and gelatinization in the process of air current flow to wrap up filler grain, by such mode, greatly can increase the mixing uniformity of starch and filler grain, thus obtain domain size distribution more uniform starch-filler complex.When this starch-filler complex is used for papermaking: on the one hand, relative to filler grain, be coated on after gelatinization between the starch on filler grain surface and fiber and there is good adhesion, therefore, the gelatinized starch by being coated on filler grain surface can increase the adhesion between filler grain and fiber; On the other hand, due to the parcel of gelatinized starch, the particle diameter of filler grain is increased greatly, reduce filler through forming web along with the possibility that plain boiled water runs off.Therefore, the retention rate of filler can be made to be promoted significantly.
In addition, those skilled in the art also can do other change in spirit of the present invention.Therefore these changes done according to the present invention's spirit, all should be included within the present invention's scope required for protection.
Claims (10)
1. a filler treatment process, it comprises the steps:
Starch and filler grain are incorporated in air-flow, roll to make described starch and described filler grain, move;
In described air-flow, introducing steam, described starch water suction swollen, gelatinization are also final wraps up described filler grain to form starch-filler complex to make.
2. filler treatment process as claimed in claim 1, is characterized in that: starch and filler grain are introduced step in air-flow by described starch and filler grain are introduced air and powder mixer to carry out.
3. filler treatment process as claimed in claim 1, is characterized in that: described air-flow is air stream or inert gas flow.
4. filler treatment process as claimed in claim 1, is characterized in that: the mass ratio of described starch and filler grain is 1:0.5 ~ 10.
5. filler treatment process as claimed in claim 1, is characterized in that: in described air-flow, introducing steam to make described starch water suction swollen, gelatinization also finally wrap up described filler grain to form starch-filler complex is by realizing directly to introducing the steam of temperature more than the gelatinization point of described starch in described air-flow.
6. filler treatment process as claimed in claim 5, is characterized in that: the temperature range of described steam is 53 DEG C ~ 120 DEG C.
7. filler treatment process as claimed in claim 6, is characterized in that: the duration of introducing described steam in described air-flow is 1 ~ 30min.
8. filler treatment process as claimed in claim 1, it is characterized in that, in described air-flow, introduce steam realize as follows to form starch-filler complex to make absorb water swollen, gelatinization the described filler grain of final parcel of described starch: first in described air-flow, introduce the steam of temperature below described starch atomization temperature be in air-water mixed system to make described starch and filler grain, described starch is absorbed water in the process of air motion swollen be attached to the surface of filler grain; Afterwards, regulate the temperature of described air-water mixed system to make described starch gelatinization and to wrap up described filler grain to form starch-filler complex.
9. filler treatment process as claimed in claim 1, is characterized in that: after formation described starch-filler complex, also comprise the step utilizing weight pneumatic concentration or screening mode to collect described starch-filler complex further.
10. a paper technology, it comprises the steps:
Process to obtain starch-filler complex to filler grain according to the filler treatment process as described in any one of claim 1 ~ 9; And
Described starch-filler complex to be joined in paper pulp to obtain mixing slurry, utilize described mixing slurry to manufacture paper with pulp paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310402998.3A CN103469676B (en) | 2013-09-06 | 2013-09-06 | Filler treatment process and paper technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310402998.3A CN103469676B (en) | 2013-09-06 | 2013-09-06 | Filler treatment process and paper technology |
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| Publication Number | Publication Date |
|---|---|
| CN103469676A CN103469676A (en) | 2013-12-25 |
| CN103469676B true CN103469676B (en) | 2015-11-25 |
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| CN201310402998.3A Expired - Fee Related CN103469676B (en) | 2013-09-06 | 2013-09-06 | Filler treatment process and paper technology |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023007354A (en) * | 2021-06-29 | 2023-01-18 | セイコーエプソン株式会社 | Production method of molding |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2396831A1 (en) * | 1977-07-04 | 1979-02-02 | Scholten Honig Research Nv | Paper and cardboard prodn. using filler - coated with quat. cationic starch-ether, giving improved pulp filler retention |
| US5149799A (en) * | 1990-01-26 | 1992-09-22 | National Starch And Chemical Investment Holding Corporation | Method and apparatus for cooking and spray-drying starch |
| CN102363932A (en) * | 2011-09-30 | 2012-02-29 | 杭州纸友科技有限公司 | On-line surface modification method of papermaking filling material |
-
2013
- 2013-09-06 CN CN201310402998.3A patent/CN103469676B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2396831A1 (en) * | 1977-07-04 | 1979-02-02 | Scholten Honig Research Nv | Paper and cardboard prodn. using filler - coated with quat. cationic starch-ether, giving improved pulp filler retention |
| US5149799A (en) * | 1990-01-26 | 1992-09-22 | National Starch And Chemical Investment Holding Corporation | Method and apparatus for cooking and spray-drying starch |
| CN102363932A (en) * | 2011-09-30 | 2012-02-29 | 杭州纸友科技有限公司 | On-line surface modification method of papermaking filling material |
Non-Patent Citations (1)
| Title |
|---|
| 造纸填料的包覆改性――提高加填纸张的强度性能;刘温霞等;《中华纸业》;20101231;第31卷(第24期);第6-11页 * |
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| CN103469676A (en) | 2013-12-25 |
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Granted publication date: 20151125 Termination date: 20200906 |