CN1664233A - Method for adding particulate retention filter aid in paper making process - Google Patents
Method for adding particulate retention filter aid in paper making process Download PDFInfo
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- CN1664233A CN1664233A CN 200510038358 CN200510038358A CN1664233A CN 1664233 A CN1664233 A CN 1664233A CN 200510038358 CN200510038358 CN 200510038358 CN 200510038358 A CN200510038358 A CN 200510038358A CN 1664233 A CN1664233 A CN 1664233A
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Abstract
This invention aims at the existing mote flowing aid and filter aid joined method not match with the tape unit tape unit lead to the problem of high dosage, low efficiency. It puts forward a new accession method of mote flowing aid and filter aid in the paper making process. Its trait is enter the mote flowing aid and filter aid which is made of polymer and mote into the paper pulp of after flow pressure screen and before flow in the head box. It has the excellence of network one way retention rate of low dosage, reduce chemistry cost 20~30%, advance paper materials and succeeding paper crozzle, And reduce the yield cost, advance the competitive power, improve the evenness of succeeding paper and the tape unit run capability.
Description
Technical field
The present invention relates to a kind of paper technology, the adding method of particle retention and filtration aid in especially a kind of paper-making process.
Background technology
Traditional papermaking particle retention and filtration aid is made up of polymer and particulate, and its adding method is before two sections fan pumps of paper machine pulp feeding system or adds polymer before the pressurized screen, and adds particulate after pressurized screen again, as shown in Figure 1.The reason of doing like this is: high molecular polymer joins in the ducted paper pulp of carrying paper pulp, forms big stronger floc sedimentation with paper pulp, and this floc sedimentation becomes less paper stock floc sedimentation through the high-strength hydraulic shear effect of fan pump or pressurized screen; After pressurized screen, add particle subsequently and the little floc sedimentation of these slurries is wadded a quilt with cotton again gather to become uniformly big floc sedimentation, thereby reach paper pulp good reservation and drainage on the net.
But in recent years, paper machine speed improved very fast; Pulp feeding system equipment, headbox structure and wet end moulding dewatering elements etc. all have very big change, particularly pressurized screen and fan pump.It is exactly that paper pulp is subjected to bigger hydraulic shear effect in paper machine system that the variation of these device structures produces a maximum feature.This powerful hydraulic shear makes paper pulp become very tiny through the floc sedimentation behind fan pump and the pressurized screen, attached to the high molecular polymer on these tiny floc sedimentations all is calm on fiber, filler and other material basically, seldom there is polymer molecular chain or to dissociate crosslinked with other material outside electric double layer from the surperficial stretching, extension of the material of absorption, greatly reduce these polymer and produce the atomic reactivity that adds behind the ability of floc sedimentations and polymer and the pressurized screen, the anti-hydraulic shear ability of the slurry floc sedimentation of formation is also very weak.Thereby cause the particle retention and filtration aid consumption very high, its usefulness greatly reduces, the online one way retaining-age of paper stock that is difficult to reach higher with obtain the very high paper ash part that becomes.
Summary of the invention
The objective of the invention is not match and cause consumption height, problem that usefulness is low that the adding method of particle retention and filtration aid in a kind of new paper-making process is provided at existing particle retention and filtration aid adding method and paper machine speed.
Technical scheme of the present invention is:
The adding method of particle retention and filtration aid in a kind of paper-making process is characterized in that after outflow pressure sieve, adds by polymer and the molecular particle retention and filtration aid of particulate in the paper pulp before flowing to head box.
Add polymer in the paper pulp and particulate or add or at intervals add at the same position of the slip pipeline of carrying paper pulp.
Polymer is polyacrylamide PAM, polymine PEI, polyethylene glycol oxide PEO or modified starch etc.
Particulate is netted or chain high molecular polymer, bentonite and modified product, Ludox, colloid silicon, colloidal aluminum or active filler particle etc.
Shown in the accompanying drawing 2 is particle retention and filtration aid adding method in the paper-making process after improving, its feature is: polymer and particulate all are to add after the pressurized screen of pulp feeding system He before the head box, and two kinds of auxiliary agents (polymer and particulate) can be at the same positions of the slurry pipeline of carrying paper pulp or at intervals added.
Adopt particle retention and filtration aid adding method of the present invention can avoid and reduce the defective of original traditional adding method.Owing to avoided these two equipment that produce high-strength hydraulic shear of pressurized screen and fan pump, polymer join in the paper pulp with paper pulp in fiber, filler and other material form big stronger floc sedimentation, polymer molecular chain can stretch from the material surface of absorption or be free crosslinked with other material outside electric double layer, strengthened the ability of these polymer generation floc sedimentations greatly, make the common generation effect when its maximum activity of polymer and particulate, reach optimum efficiency; The ability of the anti-hydraulic shear of slurry floc sedimentation that forms is also very strong, is enough to the head box of balance back and the hydraulic shear that the wet end dewatering elements is produced.Thereby cause the usefulness of particle retention and filtration aid greatly to improve, consumption reduces very significantly, can reach the higher online one way retaining-age of paper stock at an easy rate and obtain the very high paper ash part that becomes.
Beneficial effect of the present invention:
Use checking through paper machine actual production process, adopt particle retention and filtration aid adding method of the present invention can obtain effect as shown in the table:
| Conventional method | Improve one's methods | Change % | |
| Polymer volume ppm | 520-580 | ?360-440 | -27 |
| Particulate consumption ppm | 500-560 | ?360-400 | -28 |
| One way retaining-age % | 60-65 | ?65-70 | +8 |
| Become paper ash part % | 18-22 | ?20-28 | +20 |
| Paper-forming evenness | Generally | Better | Improve |
Data from last table show: the adding method of particle retention and filtration aid of the present invention can reduce the consumption of auxiliary agent significantly, approximately can reduce chemicals cost 20～30%; Simultaneously, the online one way retaining-age of paper stock also can be improved; What is more important, this improved using method have solved the problem that one-tenth paper ash part of high-speed paper machine is difficult to up, can reach very high one-tenth paper ash part, thereby reduce the paper production cost greatly, have improved product competitiveness; In addition, become the evenness of paper also to have some improvement, the runnability of paper machine also is improved.
Description of drawings
Fig. 1 is the adding method schematic block diagram of particle retention and filtration aid in the background technology of the present invention.
Fig. 2 is the adding method schematic block diagram of particle retention and filtration aid of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 2.
In a kind of paper-making process the adding method of particle retention and filtration aid be after paper pulp flows out pressurized screen, flow to head box before, promptly in the slip pipeline between pressurized screen and head box, add by polymer and the molecular particle retention and filtration aid of particulate, both can add polymer and particulate, also can at intervals add polymer and particulate respectively at the same position of slip pipeline.
Polymer can be one or more in polyacrylamide PAM, polymine PEI, polyethylene glycol oxide PEO or the modified starch etc.
Particulate can be one or more in netted or chain high molecular polymer (as polyflexM8), bentonite and modified product, Ludox, colloid silicon, colloidal aluminum or the active filler particle etc.
During concrete enforcement, polymer and atomic addition can adopt method same as the prior art to be determined, polymer volume can be 300-500ppm (addition of present embodiment is 400ppm), it is bigger that the particulate consumption is looked paper grades different amounts difference, this example is an organic particle, and generally speaking atomic consumption is 300-500ppm (addition of present embodiment is 400ppm).Fan pump among Fig. 2, pressurized screen, head box are all same as the prior art, and polymer and atomic adding method and device are also same as the prior art.
Claims (4)
1, the adding method of particle retention and filtration aid in a kind of paper-making process is characterized in that after outflow pressure sieve, adds by polymer and the molecular particle retention and filtration aid of particulate in the paper pulp before flowing to head box.
2,, it is characterized in that adding polymer in the paper pulp and particulate or add or at intervals add at the same position of the slip pipeline of carrying paper pulp according to the adding method of particle retention and filtration aid in the described paper-making process of right claim 1.
3,, it is characterized in that described polymer is polyacrylamide PAM, polymine PEI, polyethylene glycol oxide PEO or modified starch according to the adding method of particle retention and filtration aid in right claim 1 or the 2 described paper-making process.
4,, it is characterized in that described particulate is netted or chain high molecular polymer, bentonite and modified product, Ludox, colloid silicon, colloidal aluminum or active filler particle according to the adding method of particle retention and filtration aid in right claim 1 or the 2 described paper-making process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510038358 CN1664233A (en) | 2005-02-18 | 2005-02-18 | Method for adding particulate retention filter aid in paper making process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510038358 CN1664233A (en) | 2005-02-18 | 2005-02-18 | Method for adding particulate retention filter aid in paper making process |
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| CN1664233A true CN1664233A (en) | 2005-09-07 |
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| CN 200510038358 Pending CN1664233A (en) | 2005-02-18 | 2005-02-18 | Method for adding particulate retention filter aid in paper making process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102154938A (en) * | 2011-05-04 | 2011-08-17 | 南京林业大学 | Polyethylene oxide-silica sol dual-retention drainage system |
| CN102330385A (en) * | 2011-09-15 | 2012-01-25 | 浙江华邦特种纸业有限公司 | Non-ionic-type particle retention aid and filter aid system in paper making and application method thereof |
| 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 |
| CN103966903A (en) * | 2014-05-27 | 2014-08-06 | 成都印钞有限公司 | Method and device for adding anti-counterfeit material in paper manufacturing process |
| CN112144317A (en) * | 2019-06-28 | 2020-12-29 | 芬兰温德造纸湿部技术公司 | Method and installation for adding chemicals to the flow system of a fiber web machine |
| CN116516726A (en) * | 2023-06-02 | 2023-08-01 | 玖龙纸业（东莞）有限公司 | High bulk coating white cardboard manufacturing process |
-
2005
- 2005-02-18 CN CN 200510038358 patent/CN1664233A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102154938A (en) * | 2011-05-04 | 2011-08-17 | 南京林业大学 | Polyethylene oxide-silica sol dual-retention drainage system |
| CN102330385A (en) * | 2011-09-15 | 2012-01-25 | 浙江华邦特种纸业有限公司 | Non-ionic-type particle retention aid and filter aid system in paper making and application method thereof |
| 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 |
| CN103966903A (en) * | 2014-05-27 | 2014-08-06 | 成都印钞有限公司 | Method and device for adding anti-counterfeit material in paper manufacturing process |
| CN103966903B (en) * | 2014-05-27 | 2016-05-25 | 成都印钞有限公司 | A kind of adding method and adding set thereof for paper making technique anti-fake material |
| CN112144317A (en) * | 2019-06-28 | 2020-12-29 | 芬兰温德造纸湿部技术公司 | Method and installation for adding chemicals to the flow system of a fiber web machine |
| CN112144317B (en) * | 2019-06-28 | 2023-03-21 | 芬兰温德造纸湿部技术公司 | Method and installation for adding chemicals to the flow system of a fiber web machine |
| CN116516726A (en) * | 2023-06-02 | 2023-08-01 | 玖龙纸业（东莞）有限公司 | High bulk coating white cardboard manufacturing process |
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