CN101328040A - Artificial board manufactured from papermaking sludge, manufacturing method and deodorization method thereof - Google Patents

Artificial board manufactured from papermaking sludge, manufacturing method and deodorization method thereof Download PDF

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CN101328040A
CN101328040A CNA2008101159062A CN200810115906A CN101328040A CN 101328040 A CN101328040 A CN 101328040A CN A2008101159062 A CNA2008101159062 A CN A2008101159062A CN 200810115906 A CN200810115906 A CN 200810115906A CN 101328040 A CN101328040 A CN 101328040A
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wood
paper mill
based plate
mill sludge
sludge
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CN101328040B (en
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刘贤淼
江泽慧
傅峰
费本华
房桂干
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International Center for Bamboo and Rattan
Research Institute of Wood Industry of Chinese Academy of Forestry
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Research Institute of Wood Industry of Chinese Academy of Forestry
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    • 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
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Abstract

The invention discloses a wood-based panel prepared from paper mill sludge and a method for preparing the same. The material of the wood-based panel comprises paper mill sludge and phenol formaldehyde resin adhesive, includes the following steps: 1) sludge drying; 2) sludge milling; 3) secondary drying; 4) sizing; 5) pavement; 6) thermopress adhesion; 7)product performance test after cooling. A deodorization method is also disclosed comprising the step of placing the active carbon and the wood-based panel in a sealed container for three weeks. The method of the invention adopts paper mill sludge as main material for preparing the wood-based panel, which has advantages of simple production and low cost. The preparation method not only enables the paper mill sludge from the paper mill getting efficient treatment, but also has a positive role for environmental pollution treatment.

Description

A kind of wood-based plate and manufacture method and deodorizing method that utilizes paper mill sludge to make
Technical field
The present invention relates to a kind of wood-based plate and manufacture method thereof and deodorizing method, refer to a kind of paper mill sludge wood-based plate and preparation method thereof and deodorizing method especially.
Background technology
Paper mill sludge one is to being the byproduct that makes sewage work's headache.Because sludge of sewage treatment plants contains toxic substance and heavy metal, landfill is later on polluted underground water.According to environmental administration's monitoring, 1m 3Paper mill sludge causes crops total crop failure in tens meters scopes of periphery, and underground water can't be drunk.So both waste many soils, can not fundamentally solve secondary pollution problem again.On the other hand, because the landfill yard relative shortage, domestic many paper plants mud is arbitrarily thrown aside or to abuse phenomenon without harmless treatment on the farmland very general, causes new environmental pollution, and ecological risk is increasing." ecological safety " is the important component part of national security, is the basis of maintaining a national economy social sustainable development.The incineration treatment method facility investment is big, and the incinerator that need involve great expense also will consume a large amount of fuel, is irrational from utilization of resources angle, and burns and cause secondary pollution.How paper mill sludge is carried out scientific and reasonable improvement,, recycle renewable resources to reduce the pollution treatment gross investment to greatest extent, turn waste into wealth, make pollution treatment energy extra earning, produce positive benefit, this is that domestic and international expert dreams of, the common hot issue of paying close attention to of pollution treatment enterprise.
At present, along with the raising day by day of China's living standards of the people, China construction and decoration market and furniture manufacturing industry are more and more faster to wood-based plate growth of requirement speed.According to latest information statistics, the ultimate production of the big wood-based plate kind of China 2003 four (glued board, wood-based plate, shaving board, core-board) has reached record-breaking 4,500 ten thousand m 3, wherein glued board output is 1,700 ten thousand m 3, middle density artificial board output is 1,300 ten thousand m 3, shaving board output 5,000,000 m 3, core-board output is 1,000 ten thousand m 32004 production capacities of being only middle density artificial board just increase about 40%.Although the development of the wood-based panel industry of China is very fast, output improves constantly, and the occupancy volume per person only is 0.014m 3Compare still quite low with international consumption per head.Meanwhile, the topmost problem that fast development faced of wood-based panel industry is exactly the supply of raw material problem.
Summary of the invention
At above-mentioned problem, the object of the present invention is to provide a kind of not only environmental protection but also can reduce the wood-based plate and the manufacture method thereof of manufacturing cost.
For achieving the above object, a kind of method of utilizing paper mill sludge to make wood-based plate of the present invention specifically is divided into following steps:
1) drying sludge: paper mill sludge carries out high temperature drying at 105 ℃ to be handled, fully transpiring moisture;
2) mud abrasive dust: the mud after the oven dry grinds to form fine particle, selected 10 orders not by 20 purpose mud granules standby or select 5～10 orders account for 30%, 10～20 orders account for 35%, 20～40 orders account for more than 30% and 40 orders to account for 5% mud granule standby;
3) secondary drying: mud granule is dried processing at 105 ℃, and the water content of control mud granule is 3%～5%;
4) applying glue: urea-formaldehyde resin adds 0.5%NH 4Cl, add-on is by urea-formaldehyde resin 100%, admixes the mud granule after handling through step 3 and stirs;
5) mat formation: the mixture that stirs adopts the conventional mode of mating formation tentatively to finalize the design;
6) hot-press gluing: the plank after the preliminary typing carries out conventional hot-press gluing makes its final shaping;
7) cooling back end properties test: the conventional cooling forming of the plank after final shaping the, check warehouse-in at last.
Further, described urea-formaldehyde resin (UF) forms for urea-formaldehyde resin and the water mixed with 1: 1.
Further, the resin added in step 4 and the step 6 is 12%～18% of a raw material gross weight, and hot pressing temperature is 120～180 ℃, and hot pressing time is 4～8 minutes, and pressure is 1MPa.
Further, the paper mill sludge in the step 1 was handled through the deodorizing operation.
Further, the water content after the paper mill sludge drying treatment in the step 1 is controlled at 2%～3%.
Further, the mode of admixing of applying glue adopts manual the stirring or the stirrer stirring.
The wood-based plate that a kind of paper mill sludge is made, its raw material comprises urea-formaldehyde resin adhesive and paper mill sludge, adopts aforesaid method to make.
Further, the consumption of described urea-formaldehyde resin is 12%～18%.
A kind of paper mill sludge is made artificial deodorizing method, and these method concrete steps are:
1) wood-based plate is put into container;
2) put into wood-based plate by weight greater than 1: 2 gac;
3) with container sealing;
4) place more than 3 weeks, take out wood-based plate check warehouse-in.
It is the main raw material of making wood-based plate that the present invention adopts paper mill sludge, makes simply, cheap, makes the paper mill sludge in paper mill be effectively addressed, and pollution has certain active effect to renovating environment simultaneously.
Description of drawings
Fig. 1 makes the schema of wood-based plate method for the present invention;
Test test data and the difference of original weight and the design sketch of time weekly that Fig. 2 dispels paper mill sludge wood-based plate irritating smell method for the embodiment of the invention 4;
Test test data and the difference of front one all weight and the design sketch of time weekly that Fig. 3 dispels paper mill sludge wood-based plate irritating smell method for the embodiment of the invention 4.
Embodiment
Embodiment 1:
As shown in Figure 1, a kind of method of paper mill sludge manufacturing wood-based plate specifically is divided into following steps:
1) paper mill sludge carries out high temperature drying processing, fully transpiring moisture at 105 ℃;
2) mud after the oven dry grinds to form fine particle with electrical grinding machine with the parameter that per minute 600 changes, and uses 10 orders and 20 eye mesh screen classifications then, and it is standby to select 10 orders to can't pass 20 purpose mud granules;
3) mud granule carries out the secondary drying processing at 105 ℃, and the water content of control mud granule is 3%-5%;
4) urea-formaldehyde resin 12%～18% adds 0.5%NH 4Cl, add-on is by urea-formaldehyde resin 100%, admixes the mud granule after the classification, makes simultaneously to stir by hand or mode that stirrer stirs stirs;
5) mixture that stirs is put into the mould preliminarily forming of mating formation;
6) plank behind the preliminarily forming is with 120～180 ℃ of temperature, and hot-press gluing is 4～8 minutes under the pressure 1MPa situation, makes its final shaping;
7) the conventional cooling forming of plank after final shaping the, check warehouse-in at last.
Embodiment 2:
As shown in Figure 1, a kind of method of paper mill sludge manufacturing wood-based plate specifically is divided into following steps:
1) paper mill sludge carries out high temperature drying processing, fully transpiring moisture at 105 ℃;
2) mud after the oven dry grinds to form fine particle with electrical grinding machine with the parameter that per minute 600 changes, and does not carry out gradation, and selection 5～10 orders account for 30%, 10～20 orders and account for 35%, 20～40 orders and account for 5% mud granule more than accounting for 30% and 40 orders;
3) mud granule carries out the secondary drying processing at 105 ℃, and the water content of control mud granule is 3%～5%;
4) urea-formaldehyde resin (UF) 12%～18% adds 0.5%NH 4Cl, add-on is admixed the mud granule of handling in the step 3 by urea-formaldehyde resin 100%, and the mode that stirring by hand or stirrer are stirred stirs;
5) mixture that stirs is put into the mould preliminarily forming of mating formation;
6) plank behind the preliminarily forming is with 120～180 ℃ of temperature, and hot-press gluing is 4～8 minutes under the pressure 1MPa situation, makes its final shaping;
7) the conventional cooling forming of plank after final shaping the, check warehouse-in at last.
Resin added described in the present invention is the half point ratio that pure solid gums accounts for raw material, for example resin added accounts for the meaning of raw material gross weight 12%～18% and is exactly, suppose that raw material (thinks over dry, be that water ratio is 0) have 100 to restrain, the solid gums amount that needs to add is 12～18 grams, because the solids content of glue is 50%, so actually operating need add glue (1: 1 proportioning of solid gums and water) 24～36 grams.
Table 1
Table 2
Figure A20081011590600081
Table 3
Figure A20081011590600091
Embodiment 3:
The wood-based plate that a kind of paper mill sludge is made; its raw material comprises Phenol aldehyde resin and paper mill sludge particle; described paper mill sludge particle was respectively that 10 orders can't pass 20 purpose mud granules or 5～10 orders account for 30%; 10～20 orders account for 35%; 20～40 orders account for 5% mud granule more than accounting for 30% and 40 orders; and adopt method for preparing to be shaped; a kind of mud granule of every correspondence is selected different processing parameters for use in the applying glue process with in the hot pressing; prepare the paper mill sludge of being put down in writing in the as above table 1 and make wood-based plate, wherein table 2 and table 3 are the various performance index of corresponding forming board in the table 1.
Embodiment 4:
A kind of paper mill sludge is made artificial deodorizing method, and these method concrete steps are:
1) wood-based plate is put into container;
2) put into wood-based plate by weight greater than 1: 2 gac;
3) with container sealing;
4) place more than 3 weeks, take out wood-based plate check warehouse-in.
Get two paper mill sludge wood-based plate dices, be weighed as 25.3789g (representing), 25.2027g (representing) with 2P with 1P; 2 layers of bundles of gac, fasten sack, 60.9042g (representing with C) weighs, can guarantee that amounts of activated carbon is enough, place volume to be about the 200ml moisture eliminator gac and wood-based plate, the two is opened with porcelain dividing plate lattice with holes, bore dia is 1cm, the moisture eliminator edge of opening uses sealing oil to seal, and moisture eliminator is placed sealed bag, can guarantee resistance to air loss.Other gets the same size dice, the 25.0923g that weighs (representing) with 3P, directly place indoor, to do contrast.
The examination index is the gac weightening finish, and mud wood-based plate loss of weight records the speed that increases weight with loss of weight simultaneously.One week test, one secondary data tested for 18 weeks altogether.In addition, use the mode of olfactometry to come mud wood-based plate smell is simply judged.
Changes in weight, i.e. the difference of test data weekly and original weight the results are shown in Table 3 and Fig. 2; Changes in weight, i.e. the difference of test data weekly and front one all weight the results are shown in Table 4 and Fig. 3.Which week all numerical tables show, as 1 the 1st week of expression.
Table 4
Table 5
Figure A20081011590600111
From table 4 and Fig. 2 as can be known, along with the time increases, gac weight increases, the weight of mud wood-based plate constantly reduces, and the two was more or less the same before the 10th week, may be owing to the weather heating after the 10th week, atmospheric moisture increases reason, and gac weight increases the minimizing greater than mud wood-based plate weight.Place indoor mud wood-based plate weight to descend generally, but show a kind of fluctuation, illustrate that influenced by prevailing circumstances bigger, place the weightless rule of two blocks of mud wood-based plates of moisture eliminator identical, and all greater than directly depositing in indoor mud wood-based plate, illustrate that gac works to mud wood-based plate weightlessness really, that is to say that volatile organism is in a large number by charcoal absorption in the wood-based plate.And the smell of mud wood-based plate, from the 3rd week of placing, stink obviously reduces, but a kind of taste that turns sour is arranged, and this is the taste that organism (not comprising protein) decomposes, and since the 5th week, tart flavour is also few, and the smell of mud wood-based plate reduces, and remains to for 18 weeks.
From table 5 and Fig. 3 as can be known, on weightless speed, placing the weightless speed of indoor mud wood-based plate also is undaform, and rule is more random, does not therefore draw on figure.Place interior mud wood-based plate weightlessness of moisture eliminator and gac to increase weight and all show as, preceding 3 weeks are comparatively obvious, and the minimizing of back is comparatively steady, generally speaking all reducing, but 18 all interior never having arrive zero always.Therefore can infer that the thing that the mud wood-based plate is emitted in the time of the front is more, what put later lacks, and discharges from outside to inside because organism discharges, and discharges difficult more more to the inside.
In sum, the wood-based plate that adopts this kind method to prepare has solved paper mill sludge and has handled difficult problem, and make simple, cheap, guaranteed simultaneously the intensity of sheet material again, and after shaping, added the irritating smell that the deodorizing operation has been dispeled the paper mill sludge wood-based plate, not only environmental protection but also safety.
The above-mentioned description of the wood-based plate and the manufacture method thereof of this paper mill sludge manufacturing being carried out with reference to embodiment; be illustrative rather than determinate; can be made into different specifications with the series division; therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.

Claims (9)

1. method of utilizing paper mill sludge to make wood-based plate is characterized in that this method specifically is divided into following steps:
1) drying sludge: paper mill sludge carries out high temperature drying at 105 ℃ to be handled, fully transpiring moisture;
2) mud abrasive dust: the mud after the oven dry grinds to form fine particle, selects 10 orders not by 20 purpose mud granules or select 5～10 orders to account for 30%, 10～20 orders to account for 35%, 20～40 orders and account for 5% the mud granule of accounting for more than 30%, 40 orders;
3) secondary drying: mud granule is dried processing at 105 ℃, and the water content of control mud granule is 3%～5%;
4) applying glue: urea-formaldehyde resin adds 0.5%NH 4Cl, add-on is by urea-formaldehyde resin 100%, admixes the mud granule after handling through step 3 and stirs;
5) mat formation: the mixture that stirs adopts the conventional mode of mating formation to carry out preliminarily forming;
6) hot-press gluing: the plank behind the preliminarily forming carries out conventional hot-press gluing makes its final shaping;
7) cooling back end properties test: the conventional cooling forming of the plank after final shaping the, check warehouse-in at last.
2. a kind of method of utilizing paper mill sludge to make wood-based plate as claimed in claim 1 is characterized in that, to be urea-formaldehyde resin and water form with 1: 1 mixed described urea-formaldehyde resin.
3. a kind of method of utilizing paper mill sludge to make wood-based plate as claimed in claim 1, it is characterized in that the resin added in step 4 and the step 6 is 12%～18% of a raw material gross weight, hot pressing temperature is 120～180 ℃, hot pressing time is 4～8 minutes, and pressure is 1MPa.
4. a kind of method of utilizing paper mill sludge to make wood-based plate as claimed in claim 1 is characterized in that the paper mill sludge in the step 1 was handled through the deodorizing operation.
5. a kind of method of utilizing paper mill sludge to make wood-based plate as claimed in claim 1 is characterized in that the water content after the paper mill sludge drying treatment in the step 1 is controlled at 2%～3%.
6. a kind of method of utilizing paper mill sludge to make wood-based plate as claimed in claim 1 is characterized in that, the alr mode of applying glue adopts manual the stirring or the stirrer stirring.
7. a wood-based plate that utilizes paper mill sludge to make is characterized in that its raw material comprises urea-formaldehyde resin and paper mill sludge, and adopts manufacture method as claimed in claim 1 to be prepared from.
8. a kind of wood-based plate that utilizes paper mill sludge to make as claimed in claim 7 is characterized in that described urea-formaldehyde resin consumption is 12%～18%.
9. the deodorizing method of a wood-based plate as claimed in claim 7 is characterized in that, these method concrete steps are:
1) wood-based plate is put into container;
2) put into wood-based plate by weight greater than 1: 2 gac;
3) with container sealing;
4) place more than 3 weeks, take out wood-based plate check warehouse-in.
CN2008101159062A 2008-06-30 2008-06-30 Artificial board manufactured from papermaking sludge, manufacturing method and deodorization method thereof Expired - Fee Related CN101328040B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103482948A (en) * 2013-08-14 2014-01-01 金东纸业（江苏）股份有限公司 Production method of panel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103755221B (en) * 2013-12-09 2016-06-29 安徽农业大学 A kind of insulation material bamboo paper mill sludge, floating bead composite plate preparation method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103482948A (en) * 2013-08-14 2014-01-01 金东纸业（江苏）股份有限公司 Production method of panel

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