CN106120423A - A kind of recovery method of paper pulp fiber - Google Patents
A kind of recovery method of paper pulp fiber Download PDFInfo
- Publication number
- CN106120423A CN106120423A CN201610594996.2A CN201610594996A CN106120423A CN 106120423 A CN106120423 A CN 106120423A CN 201610594996 A CN201610594996 A CN 201610594996A CN 106120423 A CN106120423 A CN 106120423A
- Authority
- CN
- China
- Prior art keywords
- fiber
- lyophilizing
- paper pulp
- recovery method
- dry finish
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
Abstract
The present invention relates to the recovery method of a kind of paper pulp fiber, filtered including slanted screen: paper waste is delivered to waterpower slanted screen through water pump and filtered；Second dehydration: the serosity after filtration is collected through filter screen type conveyer belt and carried out second dehydration to pressafiner, obtains dry finish；Lyophilization: frozen more than 3 hours 30 DEG C to 40 DEG C urgency by dry finish, until fully charge is for reclaiming lumps；Being vacuum dried reclaiming lumps, vacuum degree control, at 10 20Pa, obtains lyophilizing recycled fiber.Being different from prior art, dry finish is made lyophilizing recycled fiber by cryodesiccated mode by the present invention, effectively keeps fibre structure, and keeping quality is good, can store at normal temperatures 35 years, and finished weight is light, it is simple to transport.Recycled fiber after lyophilizing, can carry out dispensing accurately according to producing needs, and controlling operability is stronger.
Description
Technical field
The present invention relates to pulping and paper-making production technical field, particularly to the recovery method of a kind of paper pulp fiber.
Background technology
In prior art, containing substantial amounts of paper pulp fiber in the waste water of papermaking discharge, at present frequently with method be to utilize
The filter screen of certain mesh number carries out filtering from flowing into collection stock tank, and general concentration is 1～3%, and recycling pumping is reclaimed toward slip house
Utilize.
During realizing the present invention, inventor finds that in prior art, there are the following problems:
1, the paper pulp fiber moisture after filtering high (concentration is high, and stream is motionless, it is impossible to assemble to collecting stock tank), pump
Deliver to workshop power consumption big；
2, reclaiming concentration of slurry fluctuation big, slurrying workshop section dispensing can not accurately control to add proportioning, is unfavorable for steady production；
3, long distance delivery easily causes pipe-line equipment abrasion, blocking, and unusual condition takes place frequently, and maintenance rate is high, and production efficiency is low；
4, shutting down such as corresponding paper machine, after recovery, aqueous slurry doses cannot store greatly, can only be carried out by conventional belt machine
It is pressed into moisture content 80% to starch cake and pile up storage on the spot, because moisture content is the highest, can frequently result in slurry blackout of rotting smelly, both shadows
Ring reuse quality, also affect surrounding enviroment.
Summary of the invention
For this reason, it may be necessary to provide the recovery method of a kind of paper pulp fiber, it is used for solving paper pulp fiber inconvenience transport, inconvenience throwing
The problem that product, inconvenience store
For achieving the above object, inventor provide the recovery method of a kind of paper pulp fiber, comprise the following steps:
Slanted screen filters:
Paper waste is delivered to waterpower slanted screen through water pump and is filtered；
Second dehydration:
Serosity after filtration is collected through filter screen type conveyer belt and is carried out second dehydration to pressafiner, obtains solid content
The dry finish of more than 60%；
Lyophilization:
Dry finish is frozen more than 3 hours-30 DEG C to-40 DEG C urgency, until fully charge is for reclaiming lumps；
Being vacuum dried reclaiming lumps, vacuum degree control, at 10-20Pa, obtains lyophilizing recycled fiber.
As a kind of preferred structure of the present invention, the dry finish crowd after second dehydration adds composite microbial bacteria to it
Fermenting, described composite microbial bacteria includes bacillus megaterium, streptomyces griseus and torrid zone vacation silk starter.Its effect is to remove
Remove slag the stink in liquid, makes fiber become softer, the paper created then more soft comfortable.
As a kind of preferred structure of the present invention, in described recovery step of freeze drying, to reclaiming root when slurry is vacuum dried
Freeze-drying curve is descended to carry out according to this:
| The heating-cooling time | Temperature of heating plate | Constant temperature time |
| 60min↑ | 100℃ | 430min |
| 20min↓ | 95℃ | 380min |
| 10min↓ | 90℃ | 300min |
| 20min↓ | 85℃ | 80 DEG C are reached to slurry central temperature |
As a kind of preferred structure of the present invention, further include steps of
Steam rehydration:
Lyophilizing recycled fiber is carried out high-temperature steam sterilization, and the time is 0.5-1.5 hour, and high-temperature steam sterilization is carried out simultaneously
Fiber rehydration.
Being different from prior art, technique scheme has the advantage that
1, by cryodesiccated mode, dry finish is made lyophilizing recycled fiber, effectively keep fibre structure, keeping quality
Good, 3-5 can be stored at normal temperatures, finished weight is light, it is simple to transport.
2, the recycled fiber after lyophilizing, it is simple to transhipment handling and on-site sanitation are cleared up.
3, the recycled fiber after lyophilizing, can carry out dispensing accurately according to producing needs, and controlling operability is stronger.
4, as long-term without recycled fiber, because its high solid content and high heating value can be direct because of paper machine change Technology
It is pulled to power plant for self-supply's burning ratio carry out burning utilization.
Detailed description of the invention
By describing the technology contents of the present invention, structural feature in detail, being realized purpose and effect, below in conjunction with embodiment
It is explained in detail.
Embodiment one
The recovery method of a kind of paper pulp fiber of the present embodiment, comprises the following steps:
Slanted screen filters:
Paper waste is delivered to waterpower slanted screen through water pump and is filtered；
Second dehydration:
Serosity after filtration is collected through filter screen type conveyer belt and is carried out second dehydration to pressafiner, obtains solid content
The dry finish of more than 60%；
After pressafiner carries out second dehydration to serosity, solid content up to more than 60%, it is simple to transhipment handling and on-the-spot
Hygienic cleaning；
Dry finish crowd after second dehydration adds composite microbial bacteria and ferments it, described composite microbial bacteria
Including bacillus megaterium, streptomyces griseus and torrid zone vacation silk starter.The effect adding composite microbial bacteria is to remove slag liquid
In stink, make fiber become softer, the paper created then more soft comfortable.
Lyophilization:
Dry finish is frozen more than 5 hours-30 DEG C of urgency, until fully charge is for reclaiming lumps；
Being vacuum dried reclaiming lumps, vacuum degree control, at about 10Pa, obtains lyophilizing recycled fiber.
In described recovery step of freeze drying, carry out (if desired according to following freeze-drying curve reclaiming when slurry is vacuum dried
Can be finely adjusted according to practical situation):
| The heating-cooling time | Temperature of heating plate | Constant temperature time |
| 60min↑ | 100℃ | 430min |
| 20min↓ | 95℃ | 380min |
| 10min↓ | 90℃ | 300min |
| 20min↓ | 85℃ | 80 DEG C are reached to slurry central temperature |
For optimizing vacuum drying effect, can be vacuum dried according to practical situation, vacuum drying is that material is put by one
Under condition of negative pressure, and suitably reach the boiling point under negative pressure state by heating or by cooling, material passed through after solidifying
Molten point carrys out the drying mode of dried material.The material being dried is placed in airtight hothouse exactly by vacuum drying, with
While vacuum system evacuation, the most constantly heat being dried material, make the moisture within material by pressure differential or dense
Degree difference is diffused into surface, and hydrone obtains enough kinetic energy on material surface, after overcoming intermolecular captivation, escapes into true
In the low-pressure air of empty room, thus taken away removing by vacuum pump.Utilize in the recycled fiber of paper industry processed, make the fibre after recovery
Repair and maintenance sustainability is good, it is not necessary to complicated cold chain, can store 3-5 at normal temperatures；Finished weight is light, it is simple to transport.
Further include steps of
Steam rehydration:
Lyophilizing recycled fiber is carried out high-temperature steam sterilization, and sterilizing time is 0.5 hour, and high-temperature steam sterilization is carried out simultaneously
Fiber rehydration.Lyophilizing recycled fiber carries out high-temperature steam sterilization, and the fiber contacts water after energy quick sterilization, and lyophilizing steams
Vapour, it is simple to follow-up rehydration, rehydration effect is good.
The present embodiment, the recycled fiber after lyophilizing can be joined according to producing needs in being recycled to slurrying workshop section accurately
Material, controlling operability is stronger.If paper machine overhauling does not use the recycled fiber after lyophilizing, the recycled fiber after lyophilizing can be relative
Long period stacks imputrescibility and goes bad, as long-term without recycled fiber, because of its high solid content because of paper machine change Technology
And high heating value can directly be pulled to power plant for self-supply's burning ratio and carry out burning utilization.By cryodesiccated mode, dry finish is made
Lyophilizing recycled fiber, effectively keeps fibre structure, and keeping quality is good, and finished weight is light, it is simple to transport.
Embodiment two
Embodiment two is with the difference of embodiment one:
Lyophilization:
Dry finish is frozen more than 4 hours-35 DEG C of urgency, until fully charge is for reclaiming lumps；
Being vacuum dried reclaiming lumps, vacuum degree control, at 15Pa, obtains lyophilizing recycled fiber.
Steam rehydration:
Lyophilizing recycled fiber is carried out high-temperature steam sterilization, and the time is 1 hour, and it is multiple that high-temperature steam sterilization carries out fiber simultaneously
Water.
Dry finish is made lyophilizing recycled fiber by cryodesiccated mode by the present embodiment, effectively keeps fibre structure,
Keeping quality is good, and finished weight is light, it is simple to transport.
Embodiment three
Embodiment three is with the difference of embodiment one:
Lyophilization:
Dry finish is frozen more than 3 hours-40 DEG C of urgency, until fully charge is for reclaiming lumps；
Being vacuum dried reclaiming lumps, vacuum degree control, at 20Pa, obtains lyophilizing recycled fiber.
Steam rehydration:
Lyophilizing recycled fiber is carried out high-temperature steam sterilization, and the time is 1.5 hours, and high-temperature steam sterilization carries out fiber simultaneously
Rehydration.
Dry finish is made lyophilizing recycled fiber by cryodesiccated mode by the present embodiment, effectively keeps fibre structure,
Keeping quality is good, and finished weight is light, it is simple to transport.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description is made convert, or are directly or indirectly used in other relevant technology necks
Territory, is the most in like manner included in the scope of patent protection of the present invention.
Claims (4)
1. the recovery method of a paper pulp fiber, it is characterised in that comprise the following steps:
Slanted screen filters:
Paper waste is delivered to waterpower slanted screen through water pump and is filtered；
Second dehydration:
Serosity after filtration through filter screen type conveyer belt collect carry out second dehydration to pressafiner, obtain solid content 60% with
On dry finish；
Lyophilization:
Dry finish is frozen more than 3 hours-30 DEG C to-40 DEG C urgency, until fully charge is for reclaiming lumps；
Being vacuum dried reclaiming lumps, vacuum degree control, at 10-20Pa, obtains lyophilizing recycled fiber.
The recovery method of paper pulp fiber the most according to claim 1, it is characterised in that
Dry finish crowd after second dehydration adds composite microbial bacteria and ferments it, and described composite microbial bacteria includes
Bacillus megaterium, streptomyces griseus and torrid zone vacation silk starter.
The recovery method of paper pulp fiber the most according to claim 1, it is characterised in that in described recovery step of freeze drying, right
Reclaim when slurry is vacuum dried and carry out according to following freeze-drying curve:
The recovery method of paper pulp fiber the most according to claim 1, it is characterised in that further include steps of
Steam rehydration:
Lyophilizing recycled fiber is carried out high-temperature steam sterilization, and the time is 0.5-1.5 hour, and high-temperature steam sterilization carries out fiber simultaneously
Rehydration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594996.2A CN106120423A (en) | 2016-07-26 | 2016-07-26 | A kind of recovery method of paper pulp fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594996.2A CN106120423A (en) | 2016-07-26 | 2016-07-26 | A kind of recovery method of paper pulp fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106120423A true CN106120423A (en) | 2016-11-16 |
Family
ID=57289600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610594996.2A Pending CN106120423A (en) | 2016-07-26 | 2016-07-26 | A kind of recovery method of paper pulp fiber |
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| Country | Link |
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| CN (1) | CN106120423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881538A (en) * | 2019-02-18 | 2019-06-14 | 杭州西红柿环保科技有限公司 | A kind of enhanced method for paper pulp molding production |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU498382A1 (en) * | 1974-07-24 | 1976-01-05 | Украинский научно-исследовательский институт целлюлозно-бумажной промышленности | The method of disposal of fibrous waste wastewater pulp and paper production |
| JPS5255719A (en) * | 1975-10-31 | 1977-05-07 | Daicel Chem Ind Ltd | Hollow fibers having selective gas permeability and production thereof |
| US4474949A (en) * | 1983-05-06 | 1984-10-02 | Personal Products Company | Freeze dried microfibrilar cellulose |
| US5104411A (en) * | 1985-07-22 | 1992-04-14 | Mcneil-Ppc, Inc. | Freeze dried, cross-linked microfibrillated cellulose |
| CN102635013A (en) * | 2012-03-09 | 2012-08-15 | 华发纸业(福建)股份有限公司 | Process for recycling papermaking waste water |
| CN104619914A (en) * | 2012-07-18 | 2015-05-13 | 纳幕尔杜邦公司 | Freeze dried pulp and method of making |
-
2016
- 2016-07-26 CN CN201610594996.2A patent/CN106120423A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU498382A1 (en) * | 1974-07-24 | 1976-01-05 | Украинский научно-исследовательский институт целлюлозно-бумажной промышленности | The method of disposal of fibrous waste wastewater pulp and paper production |
| JPS5255719A (en) * | 1975-10-31 | 1977-05-07 | Daicel Chem Ind Ltd | Hollow fibers having selective gas permeability and production thereof |
| US4474949A (en) * | 1983-05-06 | 1984-10-02 | Personal Products Company | Freeze dried microfibrilar cellulose |
| US5104411A (en) * | 1985-07-22 | 1992-04-14 | Mcneil-Ppc, Inc. | Freeze dried, cross-linked microfibrillated cellulose |
| CN102635013A (en) * | 2012-03-09 | 2012-08-15 | 华发纸业(福建)股份有限公司 | Process for recycling papermaking waste water |
| CN104619914A (en) * | 2012-07-18 | 2015-05-13 | 纳幕尔杜邦公司 | Freeze dried pulp and method of making |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881538A (en) * | 2019-02-18 | 2019-06-14 | 杭州西红柿环保科技有限公司 | A kind of enhanced method for paper pulp molding production |
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| PB01 | Publication | ||
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Application publication date: 20161116 |