NO150087B - PROCEDURE FOR CELLULOSUM PREPARATION - Google Patents
PROCEDURE FOR CELLULOSUM PREPARATION Download PDFInfo
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- NO150087B NO150087B NO774067A NO774067A NO150087B NO 150087 B NO150087 B NO 150087B NO 774067 A NO774067 A NO 774067A NO 774067 A NO774067 A NO 774067A NO 150087 B NO150087 B NO 150087B
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- cooking
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- cooking aid
- dihydroxyanthracene
- aid
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- 238000000034 method Methods 0.000 title claims description 40
- 238000010411 cooking Methods 0.000 claims description 51
- 239000012978 lignocellulosic material Substances 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000001913 cellulose Substances 0.000 claims description 6
- 229920002678 cellulose Polymers 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 6
- UTCOUOISVRSLSH-UHFFFAOYSA-N 1,2-Anthracenediol Chemical compound C1=CC=CC2=CC3=C(O)C(O)=CC=C3C=C21 UTCOUOISVRSLSH-UHFFFAOYSA-N 0.000 claims description 4
- NPRZDDJMZQXFBQ-UHFFFAOYSA-N 1,2-dihydroanthracene-9,10-diol Chemical compound C1=CC=C2C(O)=C(CCC=C3)C3=C(O)C2=C1 NPRZDDJMZQXFBQ-UHFFFAOYSA-N 0.000 claims description 4
- MUVQKFGNPGZBII-UHFFFAOYSA-N 1-anthrol Chemical compound C1=CC=C2C=C3C(O)=CC=CC3=CC2=C1 MUVQKFGNPGZBII-UHFFFAOYSA-N 0.000 claims description 4
- 150000001454 anthracenes Chemical class 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- JIKINXKGAKAVAP-UHFFFAOYSA-N 2,3-dihydroxyanthracene-1-sulfonic acid Chemical compound C1=CC=C2C=C(C(=C(C(O)=C3)O)S(O)(=O)=O)C3=CC2=C1 JIKINXKGAKAVAP-UHFFFAOYSA-N 0.000 claims description 2
- FHSNICPEHCKJIG-UHFFFAOYSA-N 9,10-dihydroxyanthracene-1-carboxylic acid Chemical compound OC=1C2=CC=CC=C2C(=C2C=CC=C(C12)C(=O)O)O FHSNICPEHCKJIG-UHFFFAOYSA-N 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 238000009835 boiling Methods 0.000 description 6
- 239000002023 wood Substances 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 239000011121 hardwood Substances 0.000 description 3
- 229920001021 polysulfide Polymers 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- OTBHDFWQZHPNPU-UHFFFAOYSA-N 1,2,3,4-tetrahydroanthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1CCCC2 OTBHDFWQZHPNPU-UHFFFAOYSA-N 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229930192627 Naphthoquinone Natural products 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000010905 bagasse Substances 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 150000002791 naphthoquinones Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- YZZLIHJEKCVDCO-UHFFFAOYSA-M sodium;2,3-dihydroxyanthracene-1-sulfonate Chemical compound [Na+].C1=CC=C2C=C(C(=C(C(O)=C3)O)S([O-])(=O)=O)C3=CC2=C1 YZZLIHJEKCVDCO-UHFFFAOYSA-M 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- CCFAKBRKTKVJPO-UHFFFAOYSA-N 1-anthroic acid Chemical compound C1=CC=C2C=C3C(C(=O)O)=CC=CC3=CC2=C1 CCFAKBRKTKVJPO-UHFFFAOYSA-N 0.000 description 1
- JTPNRXUCIXHOKM-UHFFFAOYSA-N 1-chloronaphthalene Chemical compound C1=CC=C2C(Cl)=CC=CC2=C1 JTPNRXUCIXHOKM-UHFFFAOYSA-N 0.000 description 1
- SYKKSFVTRLRUHU-UHFFFAOYSA-N 2,3-dihydroxyanthracene-1-carboxylic acid Chemical class C1=CC=C2C=C3C(C(=O)O)=C(O)C(O)=CC3=CC2=C1 SYKKSFVTRLRUHU-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 241000218631 Coniferophyta Species 0.000 description 1
- 238000005698 Diels-Alder reaction Methods 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- TZWRAFHCEQYNEB-UHFFFAOYSA-M sodium;2,3-dihydroxyanthracene-1-carboxylate Chemical compound [Na+].C1=CC=C2C=C(C(C([O-])=O)=C(C(O)=C3)O)C3=CC2=C1 TZWRAFHCEQYNEB-UHFFFAOYSA-M 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/222—Use of compounds accelerating the pulping processes
Landscapes
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Materials For Medical Uses (AREA)
Description
Foreliggende oppfinnelse vedrører en fremgangsmåte for fremstilling av cellulosemasse fra lignocelluloseholdige materialer, ved en alkalisk kokeprosess eller en sulfitt-kokeprosess, The present invention relates to a method for producing cellulose pulp from lignocellulosic materials, by an alkaline cooking process or a sulphite cooking process,
og det særegne ved fremgangsmåten i henhold til oppfinnelsen er at de lignocelluloseholdige materialer kokes i nærvær av et kokehjelpemiddel som består av minst et hydroksyantracen eller et derivat derav. and the distinctive feature of the method according to the invention is that the lignocellulosic materials are boiled in the presence of a cooking aid consisting of at least one hydroxyanthracene or a derivative thereof.
Disse og andre trekk ved oppfinnelsen fremgår av patentkravene. These and other features of the invention appear in the patent claims.
Foreliggende oppfinnelse vedrører således en fremgangsmåte for fremstilling av cellulosemasse fra lignocelluloseholdige materialer ved å gjennomføre kokingen i nærvær av en liten mengde av en ny type av kokehjelpestoffer valgt fra et hydroksyantracen og et derivat derav. Kokehjelpestoffet kan tilsettes til en kokevæske i hvilken som helst av de konvensjonelle alkaliske- eller sulfitt- eller lignende koke-prosesser. Betegnelsen "alkalisk kokeprosess" eller enkelt "alkalisk prosess" som anvendes heri inkluderer forskjellige alkaliske koke-prosesser som f.eks. sulfatprosessen, sodaprosessen, natrium-karbonatprosessen o.l. Tilsvarende inkluderer betegnelsen "sulfitt-kokeprosessen" eller enkelt "sulfitt-prosessen" som anvendt heri forskjellige sulfitt-kokeprosesser som f.eks. en alkalisk sulfittprosess, en nøytral sulfittprosess, en bisul-fitt-prosess o.l. The present invention thus relates to a method for producing cellulose pulp from lignocellulosic materials by carrying out the cooking in the presence of a small amount of a new type of cooking aid selected from a hydroxyanthracene and a derivative thereof. The cooking aid can be added to a cooking liquid in any of the conventional alkaline or sulphite or similar cooking processes. The term "alkaline cooking process" or simply "alkaline process" as used herein includes various alkaline cooking processes such as e.g. the sulphate process, the soda process, the sodium carbonate process etc. Similarly, the term "sulfite boiling process" or simply "sulfite process" as used herein includes various sulfite boiling processes such as e.g. an alkaline sulphite process, a neutral sulphite process, a bisulphite process etc.
Ved fremstilling av cellulosemasse fra lignocelluloseholdige materialer som f.eks. trevirké, bagasse, hamp o.l. er det siden lang tid tilbake utført forskjellige forsøk for å for-bedre kokeutbyttet, hastigheten av kokingen og kvaliteten av produktet, med sikte på økonomisk produksjon av masse med god kvalitet med minsket forbruk av råmaterialer og energi. I stedet for en vanlig sulfatprosess hvori lignocelluloseholdig material som f.eks. trevirke utsettes for behandling med en kokevæske hovedsakelig omfattende natriumhydroksyd og natrium-sulfid, anvendes oftest idag en modifisert prosess vanligvis kalt en "polysulfid-prosess" som er karakterisert ved at tre-virket behandles med en kokevæske omfattende natriumpolysulfid. When producing cellulose pulp from lignocellulosic materials such as e.g. wood, bagasse, hemp etc. since a long time ago, various attempts have been made to improve the cooking yield, the speed of the cooking and the quality of the product, with the aim of economical production of pulp of good quality with reduced consumption of raw materials and energy. Instead of a normal sulphate process in which lignocellulosic material such as e.g. wood is subjected to treatment with a cooking liquid mainly comprising sodium hydroxide and sodium sulphide, a modified process usually called a "polysulphide process" is most often used today, which is characterized by the wood being treated with a cooking liquid comprising sodium polysulphide.
Forskjellige andre modifikasjoner, f.eks. tilsetning av bor-hydrid, hydrazin, hydroksylamin eller lignende er også fore-slått og forsøkt. De fleste slike modifiserte prosesser er imidlertid ikke egnet for praktisk bruk på grunn av at i noen tilfeller kreves total eller delvis endring av behandlings-utstyret, i andre tilfeller er der en betydelig økning i produksjonsomkostningene, og i andre tilfeller er prosessen ikke egnet for utnyttelse av trevirke fra nåletrær og/eller harde tresorter. Således har ingen av de tidligere kjente forsøk, med unntagelse av den nevnte polysulfidprosess, ført frem til utførelse annet énn i laboratoriemålestokk. Various other modifications, e.g. addition of borohydride, hydrazine, hydroxylamine or the like has also been suggested and tried. However, most such modified processes are not suitable for practical use due to the fact that in some cases a total or partial change of the processing equipment is required, in other cases there is a significant increase in production costs, and in other cases the process is not suitable for exploitation of wood from conifers and/or hard woods. Thus, none of the previously known attempts, with the exception of the aforementioned polysulphide process, have led to execution other than on a laboratory scale.
Formålet for den foreliggende oppfinnelse er å tilveiebringe en ny fremgangsmåte for fremstilling av cellulosemasse som er fullstendig fri for de ulemper som er nevnt ovenfor. Den nye fremgangsmåte i henhold til oppfinnelsen er særpreget ved den selektive bruk av den nærmere angitte type av kokehjelpemiddel, for fremstilling av alkalisk eller sulfatmasse ved gjennomfør-ing av kokingen av de lignocelluloseholdige materialer som f.eks. trevirke, bagasse, hamp, o.l. i en alkalisk kokevæske eller i en kokevæske omfattende sulfitt. Som et resultat av gjennomføringen av kokingen av slike lignocelluloseholdige materialer som nevnt ovenfor i nærvær av en spesifikk mengde av det nærmere angitte kokehjelpemiddel, økes oppløsnings-hastigheten for lignin fra de nevnte lignocelluloseholdige materialer i vesentlig grad, og i sin tur økes også kokekapasitet og utbytte. Kokeutbyttet ved massefremstilling forbedres i vesentlig grad i forhold til de tidligere kjente prosesser hvor samme kokegrad anvendes. Dette er på grunn av at det hvdroksvantracen eller et derivat derav som tilsettes til kokevæsken virker som et kokehielpemiddel for å fremme oppløsningen av lignin i kokevæsken såvel som å forhindre nedbryting av cellulose og hemicellulose under hele koke-behandlingen. Som et resultat av å anvende dette nye kokehjelpemiddel forbedres som nevnt kokeutbyttet og også kvaliteten av den resulterende masse og kokekapasitet og hastighet forbedres også. På grunn av disse økninger blir mengden av kokekjemikalier og damp som kreves for oppvarming også betraktelig redusert. The purpose of the present invention is to provide a new method for the production of cellulose pulp which is completely free of the disadvantages mentioned above. The new method according to the invention is characterized by the selective use of the specified type of cooking aid, for the production of alkaline or sulphate mass by carrying out the cooking of the lignocellulosic materials such as e.g. wood, bagasse, hemp, etc. in an alkaline cooking liquid or in a cooking liquid comprising sulphite. As a result of carrying out the cooking of such lignocellulosic materials as mentioned above in the presence of a specific amount of the specified cooking aid, the dissolution rate for lignin from the mentioned lignocellulosic materials is increased to a significant extent, and in turn the cooking capacity and yield are also increased . The boiling yield in mass production is improved to a significant extent compared to the previously known processes where the same degree of boiling is used. This is because the hvdroxvantracene or a derivative thereof that is added to the cooking liquid acts as a cooking aid to promote the dissolution of lignin in the cooking liquid as well as to prevent the breakdown of cellulose and hemicellulose during the entire cooking process. As a result of using this new cooking aid, as mentioned, the cooking yield is improved and also the quality of the resulting pulp and cooking capacity and speed are also improved. Due to these increases, the amount of cooking chemicals and steam required for heating is also significantly reduced.
Typiske forbindelser som med fordel kan anvendes som det nevnte kokehjelpemiddel ved utførelsen av fremgangsmåten i henhold til oppfinnelsen omfatter hydroksyantracener og derivater derav med den følgende generelle formel Typical compounds which can advantageously be used as the aforementioned cooking aid in carrying out the method according to the invention include hydroxyanthracenes and derivatives thereof with the following general formula
hvori R representerer H, COOX hvori X er H eller Na, eller SO^Y hvori Y er H eller Na, A representerer H eller Na, m representerer 0, 1 eller 2, og n representerer 1 eller 2. wherein R represents H, COOX wherein X is H or Na, or SO^Y wherein Y is H or Na, A represents H or Na, m represents 0, 1 or 2, and n represents 1 or 2.
Når R representerer H i den ovennevnte generelle formel vil minst ett karbonatom i antracenkjernen miste sin dobbeltbinding til å endres fra CH til CHg i samme posisjon. De forbindelser som er definert ved den ovennevnte generelle formel (1) omfatter således de forbindelser som oppnås ved tilsetning av minst ett hydrogenatom til det karbonatom i antracenkjernen som må miste sin dobbeltbinding og endre sin CH-form til CH^-formen i den samme posisjon og omfatter f.eks. de forbindelser som representeres ved de generelle formler When R represents H in the above general formula, at least one carbon atom in the anthracene nucleus will lose its double bond to change from CH to CHg in the same position. The compounds defined by the above-mentioned general formula (1) thus include the compounds obtained by adding at least one hydrogen atom to the carbon atom in the anthracene nucleus which must lose its double bond and change its CH form to the CH^ form in the same position and includes e.g. the compounds represented by the general formulas
hvori R, A, m og n har de ovennevnte betydninger. wherein R, A, m and n have the above meanings.
Blant disse forbindelser kan dihydroksyantracen, dihydroksydihydroantracen, karboksydihydroksyantracen såvel som dihydroksyantracensulfonsyrer inklusive deres natriumsalter og dihydroksyantracen-karboksylsyrer inklusive deres natriumsalter med fordel anvendes ved utførelsen av den foreliggende oppfinnelse. Among these compounds, dihydroxyanthracene, dihydroxydihydroanthracene, carboxydihydroxyanthracene as well as dihydroxyanthracene sulfonic acids including their sodium salts and dihydroxyanthracene carboxylic acids including their sodium salts can be advantageously used in the implementation of the present invention.
Disse nye kokehjelpemidler anvendes foretrukket i mengder på fra 0.005 til 3 vektprosent basert på helt tørr vekt av rå-ma ter ial-f lis eller de lignocelluloseholdige materialer som anvendes sammen med kokevæsken. Hvis forbindelsen anvendes i en mengde i området 0.01 til 0.1 vektprosent basert på samme forhold, oppnås de optimale beste resultater. These new cooking aids are preferably used in amounts of from 0.005 to 3 percent by weight based on the completely dry weight of the raw material or the lignocellulose-containing materials used together with the cooking liquid. If the compound is used in an amount in the range of 0.01 to 0.1 percent by weight based on the same ratio, the optimal best results are obtained.
Blant forbindelser representert ved de generelle formler Among compounds represented by the general formulas
(1) - (3) kan dihydrodihydroksyantracenet lett syntetiseres fra naftokinon og butadien ved å utnytte Diels-Alder^ reaksjonen. Hvis f.eks. naftokinon og butadien omsettes med hverandre i et hydrofobt løsningsmiddel som f.eks. klornaftalen ved den kjente Diels-Alder-reaksjonen som omhandlet i f.eks. (1) - (3) the dihydrodihydroxyanthracene can be easily synthesized from naphthoquinone and butadiene by utilizing the Diels-Alder^ reaction. If e.g. naphthoquinone and butadiene react with each other in a hydrophobic solvent such as e.g. chloronaphthalene by the known Diels-Alder reaction as discussed in e.g.
US patentskrift 2.938.913, oppnås tetrahydroantrakinon i henhold til den ligning som er vist i det følgende. Dette produkt omdannes ved oppløsning i en vandig alkalisk oppløsning som f.eks. en vandig natriumhydroksydløsning til et alkalisalt av dihydrodihydroksyantracen, som kan behandles med en syre som f.eks. svovelsyre, saltsyre e.l. for utfelling av dihydrodihydroksyantracen. Alternativt kan tetrahydroantrakinon behandles direkte med en vandig løsning av en syre som f.eks. svovelsyre til å gi dihydrodihydroksyantracen som et bunnfall som vist i US patentskrift 1.890.040, side 2, høyre spalte. US patent 2,938,913, tetrahydroanthraquinone is obtained according to the equation shown below. This product is converted by dissolution in an aqueous alkaline solution such as e.g. an aqueous sodium hydroxide solution to an alkali salt of dihydrodihydroxyanthracene, which can be treated with an acid such as sulfuric acid, hydrochloric acid, etc. for precipitation of the dihydrodihydroxyanthracene. Alternatively, tetrahydroanthraquinone can be treated directly with an aqueous solution of an acid such as sulfuric acid to give the dihydrodihydroxyanthracene as a precipitate as shown in US Patent 1,890,040, page 2, right column.
Det kokehjelpemiddel som anvendes ved den foreliggende oppfinnelse oppløses lett i kokevæsken og for gjennomføring av fremgangsmåten i henhold til oppfinnelsen kreves ingen spesielle endringer med hensyn til kokebetingelsene med unntagelse av at en angitt mengde av kokehjelpemidlet enkelt tilsettes til en vanlig kokevæske. The cooking aid used in the present invention dissolves easily in the cooking liquid and for carrying out the method according to the invention no special changes are required with respect to the cooking conditions, with the exception that a specified quantity of the cooking aid is simply added to a normal cooking liquid.
De følgende eksempler illustrerer foretrukne utførelsesformer av oppfinnelsen. The following examples illustrate preferred embodiments of the invention.
Eksempel 1 Example 1
600 g flis av nåletrevirke ble anbragt i en autoklav med rominnhold 4 liter hvortil det var tilsatt en kraft-prosess - kokevæske med 17% aktivt alkali og 25% sulfiditet. Deretter ble dihydroksydihydroantracen fremstilt ved fremgangsmåten som tidligere forklart i en mengde på 0.05 vektprosent basert på helt tørr vekt av flisen tilsatt til den samme kokevæske og kokingen ble gjennomført ved 165°C i 75 minutter. 600 g of softwood chips were placed in an autoclave with a volume of 4 liters to which was added a power process - cooking liquid with 17% active alkali and 25% sulphidity. Then the dihydroxydihydroanthracene was prepared by the method previously explained in an amount of 0.05% by weight based on the completely dry weight of the wood chips added to the same cooking liquid and the cooking was carried out at 165°C for 75 minutes.
For sammenligning ble samme forsøk gjentabt med unntagelse av at dihydroksydihydroantracen ikke ble tilsatt. Resultatene av disse forsøk er vist i den følgende tabell 1. For comparison, the same experiment was repeated with the exception that dihydroxydihydroanthracene was not added. The results of these experiments are shown in the following table 1.
Eksempel 2 Example 2
700 g flis av hårdtrevirke ble anbragt i en autoklav med rominnhold 4 liter hvortil det var tilsatt en sodaprosess-kokevæske med 15.5% (som Na^O) kaustisk soda og dihydroksyantracen i en mengde på 0.02 vektprosent basert på helt tørr vekt av flisen ble tilsatt og koking ble gjennomført ved 155°C i 75 minutter. 700 g of hardwood chips were placed in an autoclave with a volume of 4 liters to which was added a soda process boiling liquid with 15.5% (as Na^O) caustic soda and dihydroxyanthracene in an amount of 0.02 percent by weight based on the completely dry weight of the chips was added and cooking was carried out at 155°C for 75 minutes.
Deretter ble for sammenligning det samme forsøk gjentatt med unntagelse av at dihydroksyantracen ikke ble tilsatt. Then, for comparison, the same experiment was repeated with the exception that the dihydroxyanthracene was not added.
Resultatene av disse forsøk er vist i den etterfølgende tabell 2. The results of these tests are shown in the following table 2.
Eksempel 3 Example 3
700 g flis av hård-trevirke ble anbragt i en autoklav med 4 liters rominnhold hvortil det var tilsatt en natriumkarbonat-prosess-kokevæske inneholdende 10% natriumkarbonat og 0.1 vektprosent basert på helt tørr vekt av flisen, av natriumdihydroksy- 700 g of hardwood chips were placed in an autoclave with a volume of 4 liters to which was added a sodium carbonate process cooking liquid containing 10% sodium carbonate and 0.1 percent by weight, based on the completely dry weight of the chips, of sodium dihydroxy-
antracenkarboksylat og koking ble gjennomført ved 180°C i 20 minutter. Deretter ble den kokte flis malt ved hjelp av en skive-raffinør til en frihetsgrad på 450 cs. anthracene carboxylate and boiling was carried out at 180°C for 20 minutes. The cooked chip was then ground using a disc refiner to a degree of freedom of 450 cs.
For sammenligning ble samme forsøk gjentatt med unntagelse av at natriumdihydroksyantracenkarboksylat ble utelatt. Resultatene av disse forsøk er vist i den etterfølgende tabell 3. For comparison, the same experiment was repeated with the exception that sodium dihydroxyanthracene carboxylate was omitted. The results of these tests are shown in the following table 3.
Eksempel 4 Example 4
400 g bast ble anbragt i en autoklav med rominnhold 4 liter hvortil det var tilsatt en kokevæske inneholdende 18% natriumsulfitt og 3% kaustisk soda, begge basert på vekten av råmaterial, og natriumdihydroksyantracensulfonat i en mengde på 0.05 basert på helt tørr vekt av råmaterialet ble tilsatt og 400 g bast was placed in an autoclave with a volume of 4 liters to which was added a cooking liquid containing 18% sodium sulphite and 3% caustic soda, both based on the weight of raw material, and sodium dihydroxyanthracene sulphonate in an amount of 0.05 based on the completely dry weight of the raw material was added and
koking ble gjennomført ved 180°C i 4 timer. Separat ble samme forsøk for sammenligning gjentatt med unntagelse av at natrium-dihydroksyantracensulfonatet ble utelatt. Resultatene av disse cooking was carried out at 180°C for 4 hours. Separately, the same experiment was repeated for comparison with the exception that the sodium dihydroxyanthracene sulfonate was omitted. The results of these
forsøk er vist i den etterfølgende tabell 4. trials are shown in the following table 4.
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14849276A JPS5374101A (en) | 1976-12-10 | 1976-12-10 | Pulp making method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO774067L NO774067L (en) | 1978-06-13 |
| NO150087B true NO150087B (en) | 1984-05-07 |
| NO150087C NO150087C (en) | 1984-08-15 |
Family
ID=15453954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO774067A NO150087C (en) | 1976-12-10 | 1977-11-28 | PROCEDURE FOR CELLULOSUM PREPARATION |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | USRE32943E (en) |
| JP (1) | JPS5374101A (en) |
| AU (1) | AU513517B2 (en) |
| BR (1) | BR7708218A (en) |
| CA (1) | CA1106557A (en) |
| DE (1) | DE2754991C3 (en) |
| FI (1) | FI68868C (en) |
| FR (1) | FR2373637A1 (en) |
| NO (1) | NO150087C (en) |
| NZ (1) | NZ185734A (en) |
| SE (1) | SE437171B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51112903A (en) * | 1975-03-26 | 1976-10-05 | Honshu Paper Co Ltd | Process for digesting lignocellulose material with sulphites |
| US4036680A (en) * | 1976-12-14 | 1977-07-19 | Canadian Industries, Ltd. | Delignification of lignocellulosic material with a soda pulping liquor containing a Diels Alder adduct of benzoquinone or naphthoquinone in admixture with a nitro aromatic compound |
| US4036681A (en) * | 1976-12-14 | 1977-07-19 | Canadian Industries, Ltd. | Delignification of lignocellulosic material with an alkaline pulping liquor containing a Diels Alder adduct of benzoquinone or naphthoquinone |
| JPS6059356B2 (en) * | 1977-12-05 | 1985-12-24 | 川崎化成工業株式会社 | Pulp manufacturing method |
| FR2435457A1 (en) * | 1978-06-29 | 1980-04-04 | Ugine Kuhlmann | HEXAHYDRO-1,2,3,4,4A, 9A ANTHRACENE-DIONE-9,10, ITS PREPARATION AND ITS APPLICATION TO THE DELIGNIFICATION OF LIGNOCELLULOSIC MATERIALS |
| JPS5512806A (en) * | 1978-07-04 | 1980-01-29 | Oji Paper Co | Alkali pulp producing method |
| FR2442912A1 (en) * | 1978-07-27 | 1980-06-27 | Ugine Kuhlmann | PROCESS FOR COOKING LIGNOCELLULOSIC MATERIALS FOR THE PRODUCTION OF PULP |
| JPS55128091A (en) * | 1979-03-23 | 1980-10-03 | Oji Paper Co | Pulping of lignocellulose material |
| JPS58125737U (en) * | 1982-02-18 | 1983-08-26 | 株式会社シマノ | caliper brake |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE326705C (en) * | 1919-10-17 | 1920-09-30 | Richard Hartmuth Dr | Process for the treatment of wood or cellulosic materials for the production of cellulose and synthetic resin, paint, asphalt and the like like |
| US1705424A (en) * | 1924-09-30 | 1929-03-12 | Strecker Otto Carl | Process for the production of cellulose by decomposition of vegetable fibers |
| US1658213A (en) * | 1924-09-30 | 1928-02-07 | Otto C Strecker | Process for the production of cellulose by decomposition of vegetable fibers |
| DE486533C (en) * | 1926-12-24 | 1929-11-19 | Otto C Strecker Fa Dr | Process for obtaining pulp |
| US1890040A (en) * | 1928-05-07 | 1932-12-06 | Gen Aniline Works Inc | Production of anthraquinone and derivatives thereof |
| BE370781A (en) * | 1929-06-07 | |||
| DE569853C (en) * | 1929-08-07 | 1933-02-09 | E H Willi Schacht Dr Ing | Process for the production of a semi-pulp from straw and grass |
| US2883826A (en) * | 1953-01-07 | 1959-04-28 | Univ Minnesota | Process for conditioning plant fibers for spinning |
| FR72957E (en) * | 1956-11-05 | |||
| CA986662A (en) * | 1973-05-01 | 1976-04-06 | David L. Mccandless | Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping |
| JPS5143403A (en) * | 1974-10-09 | 1976-04-14 | Honshu Paper Co Ltd | Arukariparupuno seizohoho |
| JPS51112903A (en) * | 1975-03-26 | 1976-10-05 | Honshu Paper Co Ltd | Process for digesting lignocellulose material with sulphites |
| JPS51109303A (en) * | 1975-03-24 | 1976-09-28 | Honshu Paper Co Ltd | ARUKARIISANSOSHORINYORU RIGUNOSERUROOSUBUTSUSHITSUNO DATSURIGUNINHO |
| CA1073161A (en) * | 1975-09-05 | 1980-03-11 | Canadian Industries Limited | Delignification process |
| ZA773044B (en) * | 1976-06-02 | 1978-04-26 | Australian Paper Manufacturers | Improvements in pulping processes |
| US4036681A (en) * | 1976-12-14 | 1977-07-19 | Canadian Industries, Ltd. | Delignification of lignocellulosic material with an alkaline pulping liquor containing a Diels Alder adduct of benzoquinone or naphthoquinone |
-
1976
- 1976-12-10 JP JP14849276A patent/JPS5374101A/en active Granted
-
1977
- 1977-11-21 NZ NZ185734A patent/NZ185734A/en unknown
- 1977-11-23 SE SE7713266A patent/SE437171B/en not_active IP Right Cessation
- 1977-11-23 AU AU30870/77A patent/AU513517B2/en not_active Expired
- 1977-11-28 NO NO774067A patent/NO150087C/en unknown
- 1977-11-30 CA CA292,069A patent/CA1106557A/en not_active Expired
- 1977-12-02 FI FI773661A patent/FI68868C/en not_active IP Right Cessation
- 1977-12-09 FR FR7737226A patent/FR2373637A1/en active Granted
- 1977-12-09 BR BR7708218A patent/BR7708218A/en unknown
- 1977-12-09 DE DE2754991A patent/DE2754991C3/en not_active Expired
-
1981
- 1981-02-12 US US06/233,962 patent/USRE32943E/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| AU513517B2 (en) | 1980-12-04 |
| BR7708218A (en) | 1978-09-05 |
| FR2373637A1 (en) | 1978-07-07 |
| SE7713266L (en) | 1978-06-11 |
| FI773661A (en) | 1978-06-11 |
| DE2754991A1 (en) | 1978-06-15 |
| FR2373637B1 (en) | 1979-04-27 |
| FI68868C (en) | 1985-11-11 |
| CA1106557A (en) | 1981-08-11 |
| SE437171B (en) | 1985-02-11 |
| AU3087077A (en) | 1979-05-31 |
| USRE32943E (en) | 1989-06-06 |
| JPS5374101A (en) | 1978-07-01 |
| NO774067L (en) | 1978-06-13 |
| FI68868B (en) | 1985-07-31 |
| DE2754991C3 (en) | 1987-06-19 |
| DE2754991B2 (en) | 1979-01-18 |
| NO150087C (en) | 1984-08-15 |
| NZ185734A (en) | 1980-11-28 |
| JPS5719239B2 (en) | 1982-04-21 |
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