SE454507B - PUT IN THE PAPER, MASS OR BOARD INDUSTRIES IMPROVE RETENTION OR CELLULOSA FIBER SUSPENSION RESP RESP - Google Patents
PUT IN THE PAPER, MASS OR BOARD INDUSTRIES IMPROVE RETENTION OR CELLULOSA FIBER SUSPENSION RESP RESPInfo
- Publication number
- SE454507B SE454507B SE8604975A SE8604975A SE454507B SE 454507 B SE454507 B SE 454507B SE 8604975 A SE8604975 A SE 8604975A SE 8604975 A SE8604975 A SE 8604975A SE 454507 B SE454507 B SE 454507B
- Authority
- SE
- Sweden
- Prior art keywords
- polyethylene oxide
- cationic
- resp
- formaldehyde resin
- amount
- Prior art date
Links
- 230000014759 maintenance of location Effects 0.000 title claims description 13
- 239000000835 fiber Substances 0.000 title claims description 12
- 239000000725 suspension Substances 0.000 title claims description 10
- 125000002091 cationic group Chemical group 0.000 claims description 31
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 25
- 239000002351 wastewater Substances 0.000 claims description 20
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 18
- 229920000881 Modified starch Polymers 0.000 claims description 18
- 235000019426 modified starch Nutrition 0.000 claims description 18
- 229920001568 phenolic resin Polymers 0.000 claims description 18
- 229920002678 cellulose Polymers 0.000 claims description 15
- 239000001913 cellulose Substances 0.000 claims description 15
- 238000000746 purification Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000004705 High-molecular-weight polyethylene Substances 0.000 claims description 8
- 229920003043 Cellulose fiber Polymers 0.000 claims description 3
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 3
- 238000006467 substitution reaction Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 244000144992 flock Species 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000867 polyelectrolyte Polymers 0.000 description 3
- 229920002488 Hemicellulose Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- -1 hydroxypropyl Chemical group 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 125000006353 oxyethylene group Chemical group 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 102100031260 Acyl-coenzyme A thioesterase THEM4 Human genes 0.000 description 1
- 241000428352 Amma Species 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- 241000905957 Channa melasoma Species 0.000 description 1
- 101100298295 Drosophila melanogaster flfl gene Proteins 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 101000638510 Homo sapiens Acyl-coenzyme A thioesterase THEM4 Proteins 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/25—Cellulose
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/48—Condensation polymers of aldehydes or ketones with phenols
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/53—Polyethers; Polyesters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Description
454 507 i Genom den kanadensiska patentpublikationen 1 004 782 är det även känt att använda ett fenolformaldehydharts i kombination med en högmolekylär polyetylenoxid för att förbättra retentionen vid avvattning av cellulosafiber- suspensioner. Både vid avvattning av cellulosafiber- suspensioner och vid rening av avloppsvatten underlättar polyetylenoxidaddukten agglomerering av de utflockningar som bildas med fenolformaldehydhartset, varvid retention och rening underlättas. även om kombinationen av högmolekylär polyetylenoxid och ruiformaldehydharts ger en god retention och rening, har ,t visat sig att en del finfibrer och partikulärt, nolloidalt och löst material inte kvarhálles av fiberbanan eller avlägsnas från avloppsvattnet med den föreslagna behandlingen. Det finns därför behov av metoder som ger en ännu bättre retention och rening. Sådana problem uppträder bl a vid avvattning av fibersuspensioner från returmassa eller mekanisk massa eller vid rening av avloppsvatten från dessa massor eller från renserier. Det finns därför behov av metoder som ger en ännu bättre retention och rening. From Canadian Patent Publication 1,004,782, it is also known to use a phenol formaldehyde resin in combination with a high molecular weight polyethylene oxide to improve retention in dewatering cellulosic fiber suspensions. Both when dewatering cellulose fiber suspensions and when purifying wastewater, the polyethylene oxide adduct facilitates agglomeration of the flocculations formed with the phenol formaldehyde resin, thereby facilitating retention and purification. Although the combination of high molecular weight polyethylene oxide and ruiformaldehyde resin provides good retention and purification, it has been found that some fine fibers and particulate, nolloidal and loose materials are not retained by the fibrous web or removed from the wastewater with the proposed treatment. There is therefore a need for methods that provide even better retention and purification. Such problems occur, for example, when dewatering fiber suspensions from recycled pulp or mechanical pulp or when purifying wastewater from these pulps or from dry cleaners. There is therefore a need for methods that provide even better retention and purification.
Det har nu visat sig, att retention och rening kan för- bättras, om man till fibersuspensionen eller avloppsvattnet förutom formaldehydharts och högmolekylär polyetylenoxid även tillsätter ett katjoniskt stärkelsederivat eller ett katjoniskt cellulosaderivat. Genom närvaro av katjoniskt stärkelsederivat har det visat sig, att nollfibrer och utflockat material, som finns eller bildas under behandlingen, lättare "infàngas". Vid avvattning av en fibersuspension bindes nollfibrer, bindemedelspartiklar, fyllmedel, flockar m m i högre utsträckning till cellulosafiberbanan, vilket leder till högre utbyte, snabbare avvattning och renare avloppsvatten. Vid rening av avloppsvatten har iakttagits, att nollfibrer, bindemedels- partiklar, fyllmedel, pigment, lignin och hemicellulosa vid tillämpning av uppfinningen i väsentligt större utsträckning agglomererar till flockar. Flockarna är mycket stabila och 3 454 sov kan lätt avskiljas efter sedimentation, flotation eller centrifugering.It has now been found that retention and purification can be improved if, in addition to formaldehyde resin and high molecular weight polyethylene oxide, a cationic starch derivative or a cationic cellulose derivative is added to the fiber suspension or wastewater. Through the presence of cationic starch derivative, it has been found that zero fibers and flocculating material present or formed during the treatment are more easily "captured". When dewatering a fiber suspension, zero fibers, binder particles, fillers, flocks, etc. are bound to a greater extent to the cellulosic fibrous web, which leads to higher yields, faster dewatering and cleaner wastewater. In the purification of wastewater, it has been observed that zero fibers, binder particles, fillers, pigments, lignin and hemicellulose in the practice of the invention to a much greater extent agglomerate into flocks. The flocks are very stable and 3,454 sleeps can be easily separated after sedimentation, flotation or centrifugation.
Den högmolekulära polyetylenoxid, som är lämplig att använda vid metoden enligt uppfinningen, skall ha en molekylvikt över 500.000 och allra helst över 2.000.000. pppàt har ingen kritisk gräns iakttagits och således har goda resultat erhållits med polyetylenoxid med molekylvikten l2.000.000. Väsentligt högre molekylvikter har visat sig vara svåra att framställa p g a kedjeavkortning' vid framställ- ningen. Polyetylenoxid enligt uppfinningen är till större delen uppbyggd av oxietylengrupper, men mindre antal andra grupper kan även ingå, såsom oxipropylen. Mängden av andra grupper än oxietylen bör inte vara högre än att polyetylenoxiden är vattenlöslig.The high molecular weight polyethylene oxide suitable for use in the method of the invention should have a molecular weight above 500,000 and most preferably above 2,000,000. pppàt no critical limit has been observed and thus good results have been obtained with polyethylene oxide having a molecular weight l2,000,000. Significantly higher molecular weights have proved difficult to produce due to chain shortening during production. Polyethylene oxide according to the invention is for the most part composed of oxyethylene groups, but a smaller number of other groups may also be included, such as oxypropylene. The amount of groups other than oxyethylene should not be higher than that the polyethylene oxide is water soluble.
Fenolformaldehydhartset enligt uppfinningen är före- trädesvis vattenlösligt, även om hartser med begränsad löslighet vid neutrala eller basiska pH-värden kan användas.The phenol formaldehyde resin of the invention is preferably water soluble, although resins with limited solubility at neutral or basic pH values may be used.
Vid sura pH-värden utfälles i regel hartset.At acidic pH values, the resin usually precipitates.
Det katjoniska stärkelsederivatet som användes enligt förfarandet utgörs lämpligen av stärkelse fràn potatis, majs eller vete, vilken substituerats med kvartära ammonium- grupper. Substitutionsgraden är lämpligen 0.01-0,1. Genom modifieringen kommer det katjoniska stärkelsederivatet att bli lösligt i vatten. Det katjoniska cellulosaderivatet skall vara vattenlösligt och kan förutom katjoniska grupper även innehålla lägre alkylgrupper, såsom metyl- eller etylgrupper och lägre hydroxialkyl, såsom hydroxietyl, hydroxipropyl och hydroxibutyl. Cellulosaderivatet har lämpligen en substi- tutionsgrad av katjoniska grupper, företrädesvis kvartära ammoniumgrupper av 0.01-0.5 per anhydroglykosenhet och en molekylvikt fràn ca 10.000 till ca 1.000.000.The cationic starch derivative used according to the process suitably consists of starch from potatoes, maize or wheat, which has been substituted by quaternary ammonium groups. The degree of substitution is suitably 0.01-0.1. Through the modification, the cationic starch derivative will become soluble in water. The cationic cellulose derivative should be water soluble and may contain, in addition to cationic groups, lower alkyl groups, such as methyl or ethyl groups, and lower hydroxyalkyl, such as hydroxyethyl, hydroxypropyl and hydroxybutyl. The cellulose derivative suitably has a degree of substitution of cationic groups, preferably quaternary ammonium groups of 0.01-0.5 per anhydroglycose unit and a molecular weight of from about 10,000 to about 1,000,000.
Mängden fenolformaldehydharts , polyetylenoxid och katjoniskt stärkelsederivat eller katjoniskt cellulosa- derivat är inte kritisk. Lämpligen anpassas tillsatsmängden efter mängden och typen av fibernollfibrer, fyllmedel, bindemedel, pigment, lignin och hemicellulosa. Normalt ligger mängden fenolformaldehydharts över 1, företrädesvis över 5 454 507 q ppm; mängden polyetylenoxid över 0.1 ppm, företrädesvis över 1 ppm; och mängden katjoniskt stärkelsederivat eller katjoniskt cellulosaderivat över 1, företrädesvis över 5 ppm räknat på avloppsvattnet. Lämpliga övre gränser är ca 100, 20 resp. 200 ppm räknat på avloppsvattnet. Tillsatsmängderna vid retention är lämpligen 0.01-0.5 viktprocent av fenolform- aldehydhartset, 0.001-0.1 viktprocent av polyetylenoxid och 0.01-1.0 viktprocent av katjoniskt stärkelsederivat eller katjonískt cellulosaderivat räknat på mängden material i suspensionen. Förhållandet mellan fenolformaldehydhartset och polyetylenoxiden är företrädesvis från 1:5 till 50:1 och mellan katjoniskt stärkelsederivat eller katjoniskt cellulosaderivat och polyetylenoxid företrädesvis från 1:5 till l0O:l oberoende av om komponenterna användes vid fattenrening eller retention.The amount of phenol formaldehyde resin, polyethylene oxide and cationic starch derivative or cationic cellulose derivative is not critical. Suitably the amount of additive is adapted to the amount and type of non-fibrous fibers, fillers, binders, pigments, lignin and hemicellulose. Normally the amount of phenol formaldehyde resin is above 1, preferably above 5,454,507 q ppm; the amount of polyethylene oxide above 0.1 ppm, preferably above 1 ppm; and the amount of cationic starch derivative or cationic cellulose derivative above 1, preferably above 5 ppm based on the wastewater. Suitable upper limits are about 100, 20 resp. 200 ppm calculated on the wastewater. The addition amounts in retention are suitably 0.01-0.5% by weight of the phenol-formaldehyde resin, 0.001-0.1% by weight of polyethylene oxide and 0.01-1.0% by weight of cationic starch derivative or cationic cellulose derivative based on the amount of material in the suspension. The ratio of the phenol formaldehyde resin to the polyethylene oxide is preferably from 1: 5 to 50: 1 and between cationic starch derivative or cationic cellulose derivative and polyethylene oxide preferably from 1: 5 to 10: 1, regardless of whether the components are used in water purification or retention.
De tre komponenterna enligt uppfinningen kan tillsättas i godtycklig ordning. Exempelvis kan det katjoniska stärkelsederivatet och det katjoniska cellulosaderivatet först tillsättas följt av fenolformaldehydharts och polyetylenoxid i nu nämnd ordning. Man kan även först tillsätta fenolformaldehydharts och därefter en blandning av polyetylenoxid och katjoniskt stärkelsederivat eller katjoniskt cellulosaderivat.The three components according to the invention can be added in any order. For example, the cationic starch derivative and the cationic cellulose derivative may first be added followed by phenol formaldehyde resin and polyethylene oxide in the order now mentioned. It is also possible to add phenol formaldehyde resin first and then a mixture of polyethylene oxide and cationic starch derivative or cationic cellulose derivative.
Uppfinningen àskådliggörs ytterligare av nedanstående utföringsexempel, som icke avser att utgöra en begränsning av uppfinningens omfattning. fixempel 1 Avloppsvatten bestående av en blandning av avloppsvatten från CTMP-tillverkning och kartongtillverkning hälldes i en mängd av 800 ml i ett glaskärl. Avloppsvattnet hade ett pH av 6.5 och en torrhalt av 2.5 g per liter. Under omrörning av avloppsvattnet med en hastighet av 500 rpm vid ZSOC till- sattes en polyelektrolyt. Efter en minuts omrörning till- sattes ett fenolformaldehydharts och efter ytterligare en minut tillsattes en högmolekylär etylenoxidaddukt allt under omrörning' med en hastighet av 500 rpm. Efter 10 sekunder 5 454 507 efter den sista tillsatsen sänktes omrörningshastigheten till 100 rpm och efter ytterligare 50 sekunder avbröts omrör- ningen. De i avloppsvattnet bildade flockarna fick därefter under en minut sedimentera, varefter prov togs av den klara fasen och turbíditeten mättes med en turbidimeter. Tillsatta kemikalier, mängderna därav och uppnàdd klarhet framgår av tabell 1. Se bilaga.The invention is further illustrated by the following exemplary embodiments, which are not intended to limit the scope of the invention. 1 Example 1 Waste water consisting of a mixture of waste water from CTMP production and board production was poured in an amount of 800 ml into a glass vessel. The wastewater had a pH of 6.5 and a dry content of 2.5 g per liter. While stirring the wastewater at a speed of 500 rpm at ZSOC, a polyelectrolyte was added. After one minute of stirring, a phenol formaldehyde resin was added and after another minute, a high molecular weight ethylene oxide adduct was added, all while stirring at a speed of 500 rpm. After 10 seconds 5,454,507 after the last addition, the stirring speed was reduced to 100 rpm and after another 50 seconds the stirring was stopped. The flocks formed in the wastewater were then allowed to settle for one minute, after which samples were taken of the clear phase and the turbidity was measured with a turbidimeter. Added chemicals, the amounts thereof and the clarity achieved are shown in Table 1. See appendix.
Av resultaten framgår att testerna 2 och 3 enligt uppfinningen ger väsentligt högre klarhet än test 1 som är utfört enligt det kanadensiska patentet 1.004.782. Tillsats av andra polyelektrolyter än katjoniskt stärkelsederivat gav inte någon förbättring i jämförelse med test 1.The results show that tests 2 and 3 according to the invention give significantly higher clarity than test 1 which is carried out according to Canadian patent 1,004,782. Addition of polyelectrolytes other than cationic starch derivative did not give any improvement over test 1.
Exempel 2 Avloppsvatten från tvâttdeinkingsteg av oblekt retur- papper underkastades rening vid 2506 på samma sätt som i exempel l. Avloppsvattnet hade en torrhalt av 2.5 q/l och ett pH-värde av 7. Tillsatta kemikalier, mängder därav och uppnådda resultat framgår av tabell 2. Se bilaga.Example 2 Wastewater from unbleached recycled paper washing steps was subjected to treatment at 2506 in the same manner as in Example 1. The wastewater had a dry matter content of 2.5 q / l and a pH value of 7. Added chemicals, amounts thereof and results obtained are shown in Table 2. See appendix.
Av resultaten framgår att tillsats av katjoniskt stärkelsederivat eller katjoniskt cellulosaderivat enligt uppfinningen ger en väsentligt högre rening än när en konventionell kombination av fenolformaldehydharts och högmolekylär polyetylenoxid användes. Kombinationer av fenolformaldehydharts och högmolekylär polyetylenoxid med andra polyelektrolyter gav ingen förbättring.The results show that the addition of cationic starch derivative or cationic cellulose derivative according to the invention gives a significantly higher purification than when a conventional combination of phenol formaldehyde resin and high molecular weight polyethylene oxide is used. Combinations of phenol formaldehyde resin and high molecular weight polyethylene oxide with other polyelectrolytes gave no improvement.
Exempel 3 Avloppsvatten erhållet från ett tvättdeinkingsteg av blekt returpapper underkastades rening vid 25°C pà samma sätt som i exempel l. Avloppsvattnet hade en torrhalt 4.4 g per liter och ett pH-värde av 8. Tillsatta kemikalier, mängder ' därav samt uppnådda resultat framgår av tabell 3. Se bilaga.Example 3 Waste water obtained from a washing ink step of bleached recycled paper was subjected to purification at 25 ° C in the same manner as in Example 1. The waste water had a dry matter content of 4.4 g per liter and a pH value of 8. Chemicals added, amounts thereof and results obtained are shown. of table 3. See appendix.
Av resultaten framgår att testerna enligt uppfinningen gav en väsentligt högre rening än om bara en kombination av fenol- formaldehydharts och högmolekylär polyetylenoxid användes var för sig eller i kombination. 454 507 G Exemgel 4 En massasuspension med en cellulosafiberkoncentration av 0.55 viktprocent och ett pH-värde av 7 underkastades retentionstester vid 35°C. Cellulosafibern härstammade till 60% från tvättdeinkad massa, 30% av utskott av sulfatmassa och 10% blekt sulfatmassa. Retentionstesterna utfördes enligt Britt. Se TAPPI 56(l0), 46(1973). Tillsatta kemikalier, mängder därav och uppnådda resultat framgår av nedanstående tabell. Av resultaten framgår, att retentionen utförd enligt fëpfinningen uppvisar väsentligt bättre resultat än Jimförelsetesterna. 454 507 com m om 1 1 om 1 æfi can m cm 1 1 ON 1 »H Qom m om 1 1 QH 1 md Qom m om 1 1 m 1 md good 1 om om 1 1 1 wfi ooofl m 1 om 1 1 1 MH Good 1 1 om 1 1 1 NH Qom m om OH 1 1 1 HH cøofl 1 om 1 om 1 1 ofi Good m 1 1 om 1 1 m Qøofl 1 1 1 om 1 1 m Qom m om 1 OH 1 1 ß ooofi 1 om 1 1 1 om w com m 1 1 1 1 om m oøm 1 1 1 1 1 om v ON m am 1 1 1 om m mmfl m om 1 1 1 OH N som m om 1 1 1 1 d - woH.w wo.Onmo @oH.m.« manus ux«>Ho: ooo.om »m>fiuww ugfl>Hoz 1w»swwH~ ufism ~xfl>~oz 1wwHwxHw»w DRZ Ufl¥O |EHOwHOGww IHNHMMNHOQ Gfišmæaøm wmawxumum xmfl:Om#mM uwvfluflnuøa 1=wH>@w>Hom .Hm@H=w»»m> xwflnofiumm xmficonumx >fl»mz »»m»~w>x »wwa fiwuuß>mm@0H>ß mm umczmn Emm fiwflmšmummfiflfla a Q Q N m 4 B 454 507 oß N w om 1 1 1 Na om N w 1 om 1 1 NH oofi N w 1 oN 1 1 ofl om N w 1 1 om 1 m om N m I 1 oN I m om N m 1 1 1 om N oom w 1 1 1 om w oom N 1 1 1 1 om m omm 1 1 1 1 1 om e om N m 1 1 1 oN m owfi N m 1 1 1 1 N oooH^ 1 1 1 1 1 1 H oom m0 æN moH.m.< muums umuflwoxmfl> uxfl>H02 1fl>:wvHm ufl>flum© mmo.o ovo.o >HZ Uflxo lëuoufiocmw immofiflflflmo 1omo.oHmn 1mmo.oHmo mNo.oHwQ uwuflwwnuøü 1:mH>uwæHOm .Hcwunm> uHmuum>M um>flumUmwHmxnwuw uxwflcofiumx uHmuHN>M ummà Gwuum>mmm0H>m wa umcxmn Emm Hmwmšmummflfifla N .Hflmmšå 454 507 oom | I om m omm m 1 om w ooofi^ | om om ß om m om om w omfl m om om m mßfl m om ofl v mow m om m m oom m om | N oooH^ | 1 I H mmo.o|omo.onmQ DBZ moH.m.v uxfl>flo2 muumnwæsmwflmënom #m>fiuwUmmHwxumuw uwuwflwnnflfi flwxoflwfläuwhfløm |H0nmm umwHmmHcmuum> uxwflcofiumx uHmuHm>& amma :wuum>mmm0a>m wa umcxmu Emm .fimwmämummfiflflfi mfldmmám.The results show that the tests according to the invention gave a significantly higher purification than if only a combination of phenol-formaldehyde resin and high molecular weight polyethylene oxide was used individually or in combination. 454 507 G Exemgel 4 A pulp suspension with a cellulose fiber concentration of 0.55% by weight and a pH value of 7 was subjected to retention tests at 35 ° C. The cellulosic fiber originated 60% from washable pulp, 30% from extracts of sulphate pulp and 10% bleached sulphate pulp. The retention tests were performed according to Britt. See TAPPI 56 (l0), 46 (1973). Added chemicals, amounts thereof and achieved results are shown in the table below. The results show that the retention carried out according to the invention shows significantly better results than the comparative tests. 454 507 com m om 1 1 om 1 æ fi can m cm 1 1 ON 1 »H Qom m om 1 1 QH 1 md Qom m om 1 1 m 1 md good 1 om om 1 1 1 w fi ooo fl m 1 om 1 1 1 MH Good 1 1 om 1 1 1 NH Qom m om OH 1 1 1 HH cøo fl 1 om 1 om 1 1 o fi Good m 1 1 om 1 1 m Qøo fl 1 1 1 om 1 1 m Qom m om 1 OH 1 1 ß ooo fi 1 om 1 1 1 om w com m 1 1 1 1 om m oøm 1 1 1 1 1 om v ON m am 1 1 1 om m mm fl m om 1 1 1 OH N som m om 1 1 1 1 d - woH. w wo.Onmo @ oH.m. «manus ux«> Ho: ooo.om »m> fi uww ug fl> Hoz 1w» swwH ~ u fi sm ~ x fl> ~ oz 1wwHwxHw »w DRZ U fl ¥ O | EHOwHOGww IHNHMMNHOQ G fi fl šmæ: Om # mM uwv fl u fl nuøa 1 = wH> @w> Hom .Hm @ H = w »» m> xw fl no fi umm xm fi conumx> fl »mz» »m» ~ w> x »wwa fi wuuß> mm @ 0H> ß mm umczmn Emm fi w fl ašm QQN m 4 B 454 507 oß N w om 1 1 1 Na om N w 1 om 1 1 NH oo fi N w 1 oN 1 1 o fl om N w 1 1 om 1 m om N m I 1 oN I m om N m 1 1 1 om N oom w 1 1 1 om w oom N 1 1 1 1 om m omm 1 1 1 1 1 om e om N m 1 1 1 oN m ow fi N m 1 1 1 1 N oooH ^ 1 1 1 1 1 1 H oom m0 æN moH.m. <muums umu fl woxm fl> ux fl> H02 1fl>: wvHm u fl> fl um © mmo.o ovo.o> HZ U fl xo lëuou fi ocmw immo fiflflfl mo 1omo.o Hmn 1mmo.oHmo mNo.oHwQ uwu fl wwnuøü 1: mH> uwæHOm .Hcwunm> uHmuum> M um> fl umUmwHmxnwuw uxw fl co fi umx uHmuHN> M ummà Gwuum> mmm0m> um 4m. I om m omm m 1 om w ooo fi ^ | om om ß om m om om w om om m om om m mß fl m om o fl v mow m om m m oom m om | N oooH ^ | 1 I H mmo.o | omo.onmQ DBZ moH.m.v ux fl> fl o2 muumnwæsmw fl mënom #m> fi uwUmmHwxumuw uwuw fl wnn flfi fl wxo fl w fl äuwh fl øm | H0nmm umwHmmHcmuum> umw & mm0m> umx.
IC 454 507 o.mv mN.o o Q o.H 1 1 1 mfi w.>w m~.o o.H m.o 1 1 1 NH m.mv o.~ 1 o.H 1 1 HH o.mø mN.o o.~ 1 m.o 1 1 ofi m.mw m~.o o.~ 1 1 w.o 1 m w.Hm 1 1 1 1 1 o.H m m.mm mN.o 1 1 1 1 o.H ß w.om 1 o.H 1 1 1 o.H w m.æm m~.o o.H 1 1 1 o.fl m ~.Hß m~.o Q.H 1 1 1 m.o w m.mm mN.o o.H 1 1 1 ~.o m m.ow m~.o o.H 1 1 1 1 N ß.wm 1 1 1 1 1 1 ~ moH.w woH.m.v wuums uxfl>floS ooo.om mmo.o UUZIÃOE lflænwflam mäEm HUÜÉÃOE m .onwn lomo .onwn w øflxo lënomfionww 1Hmuxm>Hom cfiämæflom um>«HwwwmHwxumum cøflucwßwm lnwflmumæfløm .acwuum> xmflaowumm xmflconumx uxwficofiumx uumuum>M amma Hmnflumwofløflflmo uuou :ou Hmm mx .uwmumwfiafia w .HAHQÉBIC 454 507 o.mv mN.oo Q oH 1 1 1 m fi w.> Wm ~ .o oH mo 1 1 1 NH m.mv o. ~ 1 oH 1 1 HH o.mø mN.o o. ~ 1 mo 1 1 o fi m.mw m ~ .o o. ~ 1 1 wo 1 m w.Hm 1 1 1 1 1 oH m m.mm mN.o 1 1 1 1 oH ß w.om 1 oH 1 1 1 oH w m.æm m ~ .o oH 1 1 1 o. fl m ~ .Hß m ~ .o QH 1 1 1 mo w m.mm mN.o oH 1 1 1 ~ .om m.ow m ~ .o oH 1 1 1 1 N ß.wm 1 1 1 1 1 1 ~ moH.w woH.mv wuums ux fl> fl oS ooo.om mmo.o UUZIÃOE l fl ænw fl am mäEm HUÜÉÃOE m .onwn lomo .onwn w ø fl xo lënom fi onww cH ux umux « HwwwmHwxumum cø fl ucwßwm lnw fl mumæ fl øm .acwuum> xm fl aowumm xm fl conumx uxw fi co fi umx uumuum> M amma Hmn fl umwo fl ø flfl mo uuou: ou Hmm mx .uwmUMw fi a.
Claims (7)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8604975A SE454507B (en) | 1986-11-21 | 1986-11-21 | PUT IN THE PAPER, MASS OR BOARD INDUSTRIES IMPROVE RETENTION OR CELLULOSA FIBER SUSPENSION RESP RESP |
| FI875123A FI90573C (en) | 1986-11-21 | 1987-11-19 | A way to improve the retention or treatment of pulp fiber suspensions or wastewater in the paper, pulp or board industry |
| NO874840A NO166456C (en) | 1986-11-21 | 1987-11-19 | PROCEDURE FOR AA IMPROVE RETENTION OR CLEANING OF CELLULOSE FIBER SUSPENSIONS AND WASTE WATER. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8604975A SE454507B (en) | 1986-11-21 | 1986-11-21 | PUT IN THE PAPER, MASS OR BOARD INDUSTRIES IMPROVE RETENTION OR CELLULOSA FIBER SUSPENSION RESP RESP |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE8604975D0 SE8604975D0 (en) | 1986-11-21 |
| SE454507B true SE454507B (en) | 1988-05-09 |
Family
ID=20366355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8604975A SE454507B (en) | 1986-11-21 | 1986-11-21 | PUT IN THE PAPER, MASS OR BOARD INDUSTRIES IMPROVE RETENTION OR CELLULOSA FIBER SUSPENSION RESP RESP |
Country Status (3)
| Country | Link |
|---|---|
| FI (1) | FI90573C (en) |
| NO (1) | NO166456C (en) |
| SE (1) | SE454507B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5173208A (en) * | 1991-06-17 | 1992-12-22 | Nalco Canada Inc. | Liquid suspension of polyethylene oxide for use in treating paper and pulp wastewater |
| US5178770A (en) * | 1991-07-12 | 1993-01-12 | Nalco Canada Inc. | Method of treating bctmp/ctmp wastewater |
| US5230808A (en) * | 1991-06-17 | 1993-07-27 | Nalco Canada Inc. | Liquid suspension of polyethylene oxide for use in treating paper and pulp wastewater |
| WO1993015271A1 (en) * | 1992-01-29 | 1993-08-05 | Kemira Kemi Aktiebolag | Improved process for production of paper |
| WO1993022243A1 (en) * | 1992-05-05 | 1993-11-11 | Eka Nobel Ab | Method for purifying process water or wastewater containing wood resin |
| WO1999002775A1 (en) * | 1997-07-07 | 1999-01-21 | Kemira Kemi Ab | Retention agent |
| WO1999035098A1 (en) * | 1998-01-09 | 1999-07-15 | Ciba Specialty Chemicals Water Treatments Limited | Dewatering of sludges deriving from paper industry |
-
1986
- 1986-11-21 SE SE8604975A patent/SE454507B/en not_active IP Right Cessation
-
1987
- 1987-11-19 NO NO874840A patent/NO166456C/en not_active IP Right Cessation
- 1987-11-19 FI FI875123A patent/FI90573C/en not_active IP Right Cessation
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5173208A (en) * | 1991-06-17 | 1992-12-22 | Nalco Canada Inc. | Liquid suspension of polyethylene oxide for use in treating paper and pulp wastewater |
| US5230808A (en) * | 1991-06-17 | 1993-07-27 | Nalco Canada Inc. | Liquid suspension of polyethylene oxide for use in treating paper and pulp wastewater |
| US5342538A (en) * | 1991-06-17 | 1994-08-30 | Nalco Canada, Inc. | Liquid suspension of polyethylene oxide for use in treating paper and pulp wastewater |
| US5178770A (en) * | 1991-07-12 | 1993-01-12 | Nalco Canada Inc. | Method of treating bctmp/ctmp wastewater |
| WO1993015271A1 (en) * | 1992-01-29 | 1993-08-05 | Kemira Kemi Aktiebolag | Improved process for production of paper |
| US5670021A (en) * | 1992-01-29 | 1997-09-23 | Kemira Kemi Aktiebolag | Process for production of paper |
| WO1993022243A1 (en) * | 1992-05-05 | 1993-11-11 | Eka Nobel Ab | Method for purifying process water or wastewater containing wood resin |
| US5354479A (en) * | 1992-05-05 | 1994-10-11 | Eka Nobel Ab | Method for purifying process water or wastewater containing wood resin |
| WO1999002775A1 (en) * | 1997-07-07 | 1999-01-21 | Kemira Kemi Ab | Retention agent |
| WO1999035098A1 (en) * | 1998-01-09 | 1999-07-15 | Ciba Specialty Chemicals Water Treatments Limited | Dewatering of sludges deriving from paper industry |
| AU745272B2 (en) * | 1998-01-09 | 2002-03-14 | Ciba Specialty Chemicals Water Treatments Limited | Dewatering of sludges deriving from paper industry |
Also Published As
| Publication number | Publication date |
|---|---|
| SE8604975D0 (en) | 1986-11-21 |
| FI90573B (en) | 1993-11-15 |
| NO874840D0 (en) | 1987-11-19 |
| NO874840L (en) | 1988-05-24 |
| NO166456B (en) | 1991-04-15 |
| FI90573C (en) | 1994-02-25 |
| NO166456C (en) | 1991-07-24 |
| FI875123L (en) | 1988-05-22 |
| FI875123A0 (en) | 1987-11-19 |
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