CN105463896A - Recycling method of diapers - Google Patents
Recycling method of diapers Download PDFInfo
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- CN105463896A CN105463896A CN201510766529.9A CN201510766529A CN105463896A CN 105463896 A CN105463896 A CN 105463896A CN 201510766529 A CN201510766529 A CN 201510766529A CN 105463896 A CN105463896 A CN 105463896A
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- Prior art keywords
- inorganic
- paper diaper
- fiber
- paper
- diapers
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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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
- D21C5/022—Chemicals therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a recycling method of diapers. The diapers are crushed and dissolved in water; then inorganic aluminum salt, inorganic or inorganic magnesium salt solution are added and stirred evenly; untwining is carried out to obtain diaper fibers; and papermaking is conducted at a netting concentration of 0.3g / L. The recycling method of diapers uses inorganic salt to treat diaper fibers, so as to change the interface double electric layer, internal density and external density of the SAP by using inorganic salt, and ultimately reach the demulsification effect. The present invention achieves effective recovery of leftover bits and pieces of diapers, and saves a substantial amount of resource. The method fully considers economic factors from the beginning of the development, continues grow the reuse profits, reaches significant effects from the respects of saving materials, energy and transportation reducing emissions and improving the social and economic benefits, and makes great contribution to the pulping and papermaking industry.
Description
Technical field
The invention belongs to pulp and paper technology field, relate to a kind of paper diaper reuse method.
Background technology
Because of containing a large amount of high hydroscopic resin in paper diaper, have a strong impact on recycled paper performance, and its annual discarded object amount is very large, the fiber degradation time is long, as processed not in time, can cause serious environmental pollution and the wasting of resources.
The wood fibre adopted in paper diaper is the Original Pulp had good quality, and fibre length is longer, and is bleached, and is the quality raw materials manufacturing high-intensity performance paper.Reclaim this kind of fiber, both can reduce paper making raw material cost, also can reduce or remit the consumption of bleaching chemical, therefore the research of paper diaper fiber reuse technology is imperative.
And in paper diaper field, domestic and international researcher compares the research paying close attention to the application performances such as its structural design, absorbent, water retention property, counnter attack penetrating power, rate of water absorption, suction ammonia performance, load-bearing property, comfort property, and achieve certain achievement.
But the reuse technology of paper diaper fiber is studied, rarely has report at home and abroad.Reason mainly this fibrid reuse difficulty, wherein adulterate water-absorbing resin, water-swellable formed gel, direct reuse causes very large problem can to production and product quality, and the removing sulfuldioxide difficulty of high hydroscopic resin is comparatively large, the complex process of a lot of scholar's research, paper industry is difficult to accept.Therefore, under current low-carbon economy and recycling economy situation, exploitation removes the production technology of high hydroscopic resin reuse paper diaper fiber, saves social resources, is necessary.
Summary of the invention
The object of this invention is to provide a kind of paper diaper reuse method, solve the problem that in prior art, in paper diaper material, high hydroscopic resin difficulty removes.
The technical solution adopted in the present invention is, a kind of paper diaper reuse method, soluble in water after being pulverized by paper diaper, add inorganic aluminate, inorganic magnesium salt or inorganic sodium solution more respectively, and fully stir, then discongest, obtain paper diaper fiber, carry out copy paper with the online concentration of 0.3g/L.
Feature of the present invention is also,
In inorganic aluminum salting liquid, the addition of inorganic aluminate is 8% ~ 12% of paper diaper quality, discongests revolution and reach 10000 turns when discongesting fiber.
Inorganic aluminate is the one in aluminium chloride, aluminum sulfate or aluminium polychloride.
In inorganic magnesium salt solution, the addition of inorganic magnesium salt is 8% ~ 12% of paper diaper quality, discongests again, discongest revolution and reach 10000 turns when discongesting fiber after soaking 3h.
Inorganic magnesium salt is magnesium chloride or magnesium sulfate.
In inorganic sodium solution, the addition of inorganic sodium is 8% ~ 12% of paper diaper fiber quality, discongests revolution and reach 25000 turns when discongesting fiber.
Inorganic sodium is sodium chloride.
The invention has the beneficial effects as follows, paper diaper reuse method of the present invention, adopting inorganic salts treatment paper urine pants fiber respectively, to utilizing inorganic salts to change the interfacial electric double layer of SAP, interior outer density etc., finally reaching the effect of breakdown of emulsion.The present invention will realize effective recovery of paper diaper leftover pieces, economize on resources by a relatively large margin, from research and development just take into full account economic factor, reuse profit can constantly increase, from saving material, economize energy, saving transport emissions reduction and raising society and economic benefit, effect highly significant, can be pulping and paper-making industry and makes larger contribution.
Accompanying drawing explanation
Fig. 1 is the super depth-of-field microscope figure that 1# sample becomes paper multiplication factor 50 times;
Fig. 2 is the super depth-of-field microscope figure that 2# sample becomes paper multiplication factor 50 times;
Fig. 3 is the super depth-of-field microscope figure that 3# sample becomes paper multiplication factor 50 times;
Fig. 4 is the super depth-of-field microscope figure that 4# sample becomes paper multiplication factor 50 times.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of paper diaper reuse method of the present invention, soluble in water after paper diaper are pulverized, then add inorganic aluminate, inorganic magnesium salt or inorganic sodium solution respectively, and fully stir, then discongest, obtain paper diaper fiber, carry out copy paper with the online concentration of 0.3g/L.
In inorganic aluminum salting liquid, the addition of inorganic aluminate is 8% ~ 12% of paper diaper quality, discongests revolution and reach 10000 turns when discongesting fiber; Inorganic aluminate is the one in aluminium chloride, aluminum sulfate or aluminium polychloride.
In inorganic magnesium salt solution, the addition of inorganic magnesium salt is 8% ~ 12% of paper diaper quality, discongests again, discongest revolution and reach 10000 turns when discongesting fiber after soaking 3h; Inorganic magnesium salt is magnesium chloride or magnesium sulfate.
In inorganic sodium solution, the addition of inorganic sodium is 8% ~ 12% of paper diaper fiber quality, discongests revolution and reach 25000 turns when discongesting fiber; Inorganic sodium is sodium chloride.
(1) inorganic aluminate, inorganic magnesium salt or inorganic sodium is selected to abolish the reason of high hydroscopic resin
Because high hydroscopic resin exists with water in oil emulsus micellar form in wet slurry, it is together with fibers mixture, all can not remove by methods such as heating, screening, extruding, therefore consideration inorganic aluminate, inorganic magnesium salt or inorganic sodium breakdown of emulsion are to remove high hydroscopic resin.Due to the existence of inorganic aluminate, inorganic magnesium salt or inorganic sodium, the electric double layer of emulsion interfaces can be destroyed on the one hand, add the density contrast of oil, water two-phase, make interior phase elutriation go out comparatively fast; On the other hand, inorganic aluminate, inorganic magnesium salt or inorganic sodium add oil, water two-phase polarity poor, the solubility of oil in water is reduced, thus realizes breakdown of emulsion.
First get 1 part of 2.1g and pulverize rear paper diaper sample, add in 500ml water, adopt fluffer, discongesting revolution is 10000 turns, as 1# sample.
Get 3 parts of 2.1g and pulverize rear paper diaper sample, add in 300ml water respectively, take 0.21 gram of magnesium chloride more respectively, sodium chloride, aluminium chloride is dissolved in 200ml water, and it is added to respectively in 3 parts of fibre stufves, be called 2#, 3#, 4# sample, then, soak to adopt again for 3 hours after adding magnesium chloride until 2# sample and discongest device and discongest 10000 turns, 3# sample is directly discongested 25000 turns, 4# sample is directly discongested 10000 turns.After fiber has been discongested, observe high hydroscopic resin removal effect in slurry.Treat that feeding pattern is copied and get device.
Found that: aluminium chloride, magnesium chloride, sodium chloride can well abolish high hydroscopic resin according to above-mentioned technique.
(2) application of the paper diaper fiber of the present invention's recovery
The paper diaper fiber that the present invention reclaims is carried out copy paper, and whether the application estimating this fiber can impact production, becomes paper whether to have paper defects.
4 parts of slurries of will discongest respectively, add water to slurry concentration and reach 0.3g/L, copy and get that device carries out copy paper, drier is dry, make the scraps of paper with pattern.
Found that: after blank sample slurry handsheet, on screen cloth, residual more gel high hydroscopic resin, becomes paper surface irregularity, has more pit, observe into paper pit under super depth-of-field microscope, find into the sticky glutinous high hydroscopic resin (as shown in Figure 1) of paper pit fiber surface; After adding the slurry handsheet of magnesium chloride, sodium chloride and aluminium chloride, very clean on screen cloth, do not leave over fiber and high hydroscopic resin, copy and make paper, become paper even, there is no paper defects, observed by super depth-of-field microscope and find, without high hydroscopic resin (as shown in Figure 2,3, 4) between its fiber.Therefore magnesium chloride, sodium chloride, aluminium chloride can abolish the high hydroscopic resin in paper diaper fiber, can not cause puzzlement, become paper without paper defects to production, can effective reuse paper diaper fiber.
Embodiment 1
Soluble in water after paper diaper are pulverized, then add liquor alumini chloridi respectively, and fully stir, then discongest, obtain paper diaper fiber.
In liquor alumini chloridi, the addition of aluminium chloride is 8% of paper diaper quality, discongests revolution and reach 10000 turns when discongesting fiber, treats copy paper with the approach flow concentration of 0.3g/L.
Embodiment 2
Soluble in water after paper diaper are pulverized, then add aluminum sulfate solution respectively, and fully stir, then discongest, obtain paper diaper fiber.
In aluminum sulfate solution, the addition of aluminum sulfate is 10% of paper diaper quality, discongests revolution and reach 10000 turns when discongesting fiber, treats copy paper with the approach flow concentration of 0.3g/L.
Embodiment 3
Soluble in water after paper diaper are pulverized, then add polymeric aluminum chlorides solution respectively, and fully stir, then discongest, obtain paper diaper fiber.
In polymeric aluminum chlorides solution, the addition of aluminium polychloride is 12% of paper diaper quality, discongests revolution and reach 10000 turns when discongesting fiber, treats copy paper with the approach flow concentration of 0.3g/L.
Embodiment 4
Soluble in water after paper diaper are pulverized, then add magnesium chloride solution respectively, and fully stir, then discongest, obtain paper diaper fiber.
In magnesium chloride solution, the addition of magnesium chloride is 8% of paper diaper quality, discongests again, discongest revolution and reach 10000 turns, treat copy paper with the approach flow concentration of 0.3g/L when discongesting fiber after soaking 3h.
Embodiment 5
Soluble in water after paper diaper are pulverized, then add Adlerika respectively, and fully stir, then discongest, obtain paper diaper fiber.
In Adlerika, the addition of magnesium sulfate is 10% of paper diaper quality, discongests again, discongest revolution and reach 10000 turns, treat copy paper with the approach flow concentration of 0.3g/L when discongesting fiber after soaking 3h.
Embodiment 6
Soluble in water after paper diaper are pulverized, then add magnesium chloride solution respectively, and fully stir, then discongest, obtain paper diaper fiber.
In magnesium chloride solution, the addition of magnesium chloride is 12% of paper diaper quality, discongests again, discongest revolution and reach 10000 turns, treat copy paper with the approach flow concentration of 0.3g/L when discongesting fiber after soaking 3h.
Embodiment 7
Soluble in water after paper diaper are pulverized, then add sodium chloride solution respectively, and fully stir, then discongest, obtain paper diaper fiber.
In sodium chloride solution, the addition of sodium chloride is 8% of paper diaper fiber quality, discongests revolution and reach 25000 turns when discongesting fiber, treats copy paper with the approach flow concentration of 0.3g/L.
Embodiment 8
Soluble in water after paper diaper are pulverized, then add sodium chloride solution respectively, and fully stir, then discongest, obtain paper diaper fiber.
In sodium chloride solution, the addition of sodium chloride is 12% of paper diaper fiber quality, discongests revolution and reach 25000 turns when discongesting fiber, treats copy paper with the approach flow concentration of 0.3g/L.
Under current low-carbon economy and recycling economy situation, the present invention develop the production technology removing water-absorbing resins, reuse paper diaper fluff pulp fibers, fibre resources can be saved in a large number, obtain high quality fibers.Paper diaper leftover pieces price per ton is 3000 yuan, 600kg absorbent core layer fiber and 400kg external packing layer fiber can be obtained through decomposing, be Original Pulp fiber, may be used for the with slurry of any fine paper and directly become paper, in reuse process, do not produce extra waste water and solid waste.From saving material, economize energy, saving transport emissions reduction and raising society and economic benefit, effect highly significant.
Claims (7)
1. a paper diaper reuse method, is characterized in that, soluble in water after being pulverized by paper diaper, add inorganic aluminate, inorganic magnesium salt or inorganic sodium solution again, and fully stir, then discongest, obtain paper diaper fiber, carry out copy paper with the online concentration of 0.3g/L.
2. paper diaper reuse method according to claim 1, is characterized in that, in described inorganic aluminum salting liquid, the addition of inorganic aluminate is 8% ~ 12% of paper diaper quality, discongests revolution and reach 10000 turns when discongesting fiber.
3. paper diaper reuse method according to claim 1 and 2, is characterized in that, described inorganic aluminate is the one in aluminium chloride, aluminum sulfate or aluminium polychloride.
4. paper diaper reuse method according to claim 1, is characterized in that, in described inorganic magnesium salt solution, the addition of inorganic magnesium salt is 8% ~ 12% of paper diaper quality, discongests again, discongest revolution and reach 10000 turns when discongesting fiber after soaking 3h.
5. the paper diaper reuse method according to claim 1 or 4, is characterized in that, described inorganic magnesium salt is magnesium chloride or magnesium sulfate.
6. paper diaper reuse method according to claim 1, is characterized in that, in described inorganic sodium solution, the addition of inorganic sodium is 8% ~ 12% of paper diaper fiber quality, discongests revolution and reach 25000 turns when discongesting fiber.
7. the paper diaper reuse method according to claim 1 or 6, is characterized in that, described inorganic sodium is sodium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766529.9A CN105463896A (en) | 2015-11-11 | 2015-11-11 | Recycling method of diapers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766529.9A CN105463896A (en) | 2015-11-11 | 2015-11-11 | Recycling method of diapers |
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| CN105463896A true CN105463896A (en) | 2016-04-06 |
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| CN201510766529.9A Pending CN105463896A (en) | 2015-11-11 | 2015-11-11 | Recycling method of diapers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192544A (en) * | 2016-07-14 | 2016-12-07 | 陕西科技大学 | A kind of method of diaper leftover pieces absorbed layer fiber reuse papermaking |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483519A (en) * | 2002-09-18 | 2004-03-24 | 郭有镜 | Method for recovering waste and disposable paper diaper or faminine napkin |
| CN1525890A (en) * | 2001-07-09 | 2004-09-01 | �ձ�������ʽ���� | Used paper diaper processing method and used paper diaper processing device |
| JP2013132600A (en) * | 2011-12-27 | 2013-07-08 | Care-Root Service Co Ltd | Pulp recovery facility |
| CN104411881A (en) * | 2012-07-06 | 2015-03-11 | 日本制纸株式会社 | Recycled fiber and recycled fiber molding |
-
2015
- 2015-11-11 CN CN201510766529.9A patent/CN105463896A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525890A (en) * | 2001-07-09 | 2004-09-01 | �ձ�������ʽ���� | Used paper diaper processing method and used paper diaper processing device |
| CN1483519A (en) * | 2002-09-18 | 2004-03-24 | 郭有镜 | Method for recovering waste and disposable paper diaper or faminine napkin |
| JP2013132600A (en) * | 2011-12-27 | 2013-07-08 | Care-Root Service Co Ltd | Pulp recovery facility |
| CN104411881A (en) * | 2012-07-06 | 2015-03-11 | 日本制纸株式会社 | Recycled fiber and recycled fiber molding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192544A (en) * | 2016-07-14 | 2016-12-07 | 陕西科技大学 | A kind of method of diaper leftover pieces absorbed layer fiber reuse papermaking |
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Application publication date: 20160406 |