JPH0814077B2 - VALPE MANUFACTURING METHOD - Google Patents
VALPE MANUFACTURING METHODInfo
- Publication number
- JPH0814077B2 JPH0814077B2 JP14254887A JP14254887A JPH0814077B2 JP H0814077 B2 JPH0814077 B2 JP H0814077B2 JP 14254887 A JP14254887 A JP 14254887A JP 14254887 A JP14254887 A JP 14254887A JP H0814077 B2 JPH0814077 B2 JP H0814077B2
- Authority
- JP
- Japan
- Prior art keywords
- added
- pulp
- cooking liquor
- cooking
- morpholine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000010411 cooking Methods 0.000 claims description 31
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 24
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 10
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 9
- 150000002989 phenols Chemical class 0.000 claims description 9
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 8
- 150000003335 secondary amines Chemical class 0.000 claims description 8
- 150000003141 primary amines Chemical class 0.000 claims description 7
- 150000003512 tertiary amines Chemical class 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 7
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims description 6
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 claims description 6
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 claims description 6
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 5
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- -1 tertiary amine compounds Chemical class 0.000 claims description 4
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 claims description 3
- WTKZEGDFNFYCGP-UHFFFAOYSA-N Pyrazole Chemical compound C=1C=NNC=1 WTKZEGDFNFYCGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012978 lignocellulosic material Substances 0.000 claims description 3
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 2
- XGEAUXVPBXUBKN-WUFINQPMSA-N Obamegine Chemical compound C([C@H]1N(C)CCC=2C=C(C(=C(OC3=C(OC)C=C4CCN(C)[C@H](C4=C3)CC3=CC=C(C=C3)O3)C=21)O)OC)C1=CC=C(O)C3=C1 XGEAUXVPBXUBKN-WUFINQPMSA-N 0.000 claims 2
- XGEAUXVPBXUBKN-UHFFFAOYSA-N (+)-Atherospermoline Natural products O1C(C=C2)=CC=C2CC(C2=C3)N(C)CCC2=CC(OC)=C3OC(C=23)=C(O)C(OC)=CC=2CCN(C)C3CC2=CC=C(O)C1=C2 XGEAUXVPBXUBKN-UHFFFAOYSA-N 0.000 claims 1
- 238000004537 pulping Methods 0.000 description 14
- 239000000203 mixture Substances 0.000 description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 8
- 239000011121 hardwood Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 229920002488 Hemicellulose Polymers 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 238000010828 elution Methods 0.000 description 4
- 229920005610 lignin Polymers 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 150000001720 carbohydrates Chemical class 0.000 description 3
- 235000014633 carbohydrates Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 2
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229930003836 cresol Natural products 0.000 description 2
- 150000002334 glycols Chemical class 0.000 description 2
- 230000000269 nucleophilic effect Effects 0.000 description 2
- FTTATHOUSOIFOQ-UHFFFAOYSA-N 1,2,3,4,6,7,8,8a-octahydropyrrolo[1,2-a]pyrazine Chemical compound C1NCCN2CCCC21 FTTATHOUSOIFOQ-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 150000002168 ethanoic acid esters Chemical class 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000005935 nucleophilic addition reaction Methods 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 239000002683 reaction inhibitor Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- TYWMIZZBOVGFOV-UHFFFAOYSA-N tetracosan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCO TYWMIZZBOVGFOV-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Paper (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、蒸解液としてフエノール類と水との混合物
を用いてリグノセロール物質を蒸解する、いわゆるオル
ガノソルブパルプ化法の改良法に関する。TECHNICAL FIELD The present invention relates to an improved method of so-called organosolv pulping, in which a lignocerol substance is digested using a mixture of phenols and water as a cooking liquor.
従来の技術と問題点 近年、従来の無機薬品を用いて蒸解を行うパルプ化法
に代つて、有機溶媒を蒸解液として用いて原料の脱リグ
ニンを行うパルプ化（オルガノパルピングと称せられ
る）に関する方法が種々提案されている。Conventional technology and problems In recent years, in place of the conventional pulping method for cooking with inorganic chemicals, pulping with organic solvent as a cooking liquor for delignification of raw materials (referred to as organopulping) Various methods have been proposed.
一方、リグノセルロース物質から分離されたリグニン
を熱分解或は水素化分解することによつて、フエノール
類及びグリコール類を主成分とする有機物質が得られる
こともよく知られており、このフエノール類とグリコー
ル類の混合物を主成分とするものを蒸解液として使用
し、かつその補給溶媒として上記リグニンの分解により
得られる有機物質を利用することから成るパルプ化法が
考慮される。On the other hand, it is also well known that an organic substance mainly composed of phenols and glycols can be obtained by pyrolyzing or hydrolyzing lignin separated from a lignocellulosic substance. A pulping method is considered, which comprises using a mixture containing a mixture of ethylene glycol and glycols as a main component as a cooking liquor, and utilizing an organic substance obtained by the decomposition of lignin as a supplementary solvent for the cooking liquor.
しかしながら、上記のフエニール性有機溶媒を蒸解液
として用いるパルプ化法は、アルカリパルプのパルプ化
に比べて蒸解速度が遅く、原料として広葉樹を用いた場
合には、185℃の温度で180分以上、175℃の温度では360
分以上の蒸解条件を必要とする。However, the pulping method using the above phenyl organic solvent as a cooking liquor has a slower cooking rate than pulping of alkaline pulp, and when hardwood is used as a raw material, 180 minutes or more at a temperature of 185 ° C., 360 at 175 ° C
Requires cooking conditions of more than a minute.
ところが、上記蒸解条件では原料の脱リグニンと共に
パルプを構成するセルロース等の炭水化物の崩壊溶出を
きたし、パルプの収率の低下の要因となる。However, under the above-mentioned cooking conditions, the carbohydrates such as cellulose constituting pulp are dissolved and dissolved together with the delignification as a raw material, which causes a decrease in pulp yield.
而して、上述のごとき有機溶媒を蒸解液として用いる
従来の蒸解法において、上記蒸解条件を制御するのみで
はパルプの収率及び品質を向上させることは実際上困難
である 特に、近年行われているクレゾールと水の混合溶媒を
蒸解液として用いるパルプ化法では、アルカリパルプ化
法に比べてパルプの収率及び品質が劣るという問題があ
る。Thus, in the conventional cooking method using an organic solvent such as the above as a cooking liquor, it is practically difficult to improve the yield and quality of pulp only by controlling the above-mentioned cooking conditions. The pulping method using a mixed solvent of cresol and water as a cooking liquor has a problem that the yield and quality of pulp are inferior to those of the alkaline pulping method.
このような問題点は、蒸解により木材のヘミセルロー
ス中のアセチル基由来の酢酸が遊離することによりパル
プ化が促進される反面、リグニンの低分子化に伴なつて
セルロース、特にヘミセルロースの酸加水分解による崩
壊溶出が著しくなることに起因している。Such a problem is that pulping is promoted by the release of acetic acid derived from acetyl groups in the hemicellulose of wood by cooking, while the hydrolysis of cellulose, particularly hemicellulose, is accompanied by the decrease in the molecular weight of lignin. This is due to the fact that collapse elution becomes remarkable.
本発明者は、広葉樹由来の酢酸のパルプ化促進の効果
に注目し、木材中のアセチル基の加水分解を促進させ、
一方、系内の酸性度を緩和させるためアミン類を蒸解液
に添加することにより、蒸解によるセルロース、ヘミセ
ルロースの酸加水分解による崩壊溶出を抑制し得ること
を見出し、本発明をなすに至つた。The present inventor pays attention to the effect of promoting pulping of hardwood-derived acetic acid, promotes hydrolysis of acetyl groups in wood,
On the other hand, they have found that the addition of amines to the cooking liquor in order to alleviate the acidity in the system can suppress the disintegration and elution of cellulose and hemicellulose due to the acid hydrolysis during cooking, and have completed the present invention.
発明が解決しようとする課題 したがつて、本発明は、フエノール類と水との混合物
を蒸解液として用いるオルガノソルブパルプ化法におい
て、該蒸解液にアミン類を単独で添加するか、もしくは
特定な３級アミン化合物と１級アミンもしくは２級アミ
ン化合物を組合わせて添加してパルプ化を行うことによ
り、木材、その他のリグノセルロース物質の炭水化物で
あるセルロース、ヘミセルロースの崩壊溶出を抑制し
て、パルプの収率及び品質を向上するためのパルプの製
造方法を提供することを課題とする。DISCLOSURE OF THE INVENTION Problems to be Solved by the InventionAccordingly, the present invention provides an organosolv pulping method using a mixture of phenols and water as a cooking liquor, in which amines are added to the cooking liquor alone, or Pulping is carried out by adding a combination of a tertiary amine compound and a primary amine or a secondary amine compound to suppress the disintegration and elution of cellulose and hemicellulose, which are carbohydrates of wood and other lignocellulosic substances, to produce pulp. An object of the present invention is to provide a method for producing pulp for improving the yield and quality of pulp.
以下本発明を詳しく説明する。 The present invention will be described in detail below.
発明の構成 本発明の構成上の特徴は、フエノール類と水とからな
る蒸解液に、アミン類単独を添加するか、もしくはピラ
ジン、ピラゾール、ピリジン、イミダゾール、1,4−ジ
アザビシクロ〔2,2,2〕オクタン及びトリエチルアミン
等から成る群から選択される３級アミンの１種以上の化
合物と、アニリン、モルホリン、ピペラジン、ベンジル
アミン及びピペリジン等から成る群から選択される１級
アミンもしくは２級アミンの１種以上の化合物とを、１
段階或は２段階で添加したもので、木材、その他のリグ
ノセルロース物質を蒸解することにある。Structure of the invention The structural feature of the present invention is that the amines alone are added to the cooking liquor consisting of phenols and water, or pyrazine, pyrazole, pyridine, imidazole, 1,4-diazabicyclo [2,2, 2] at least one compound of a tertiary amine selected from the group consisting of octane and triethylamine, and a primary amine or secondary amine selected from the group consisting of aniline, morpholine, piperazine, benzylamine, piperidine, etc. One or more compounds and one
It is added in stages or in two stages to cook wood and other lignocellulosic materials.
課題を解決するための手段 本発明においては、フエノール類と水からなる蒸解液
に、イミダゾールを代表とする上記３級アミンを第１段
目に添加することが好ましく、この３級アミンを絶乾チ
ツプに対して５〜10重量％の範囲の量添加する。ここで
添加された３級アミンは、木材中の酢酸エステルの酸と
水酸基とへの加水分解を蒸解液中のフエノール類、例え
ばクレゾールと相乗作用により触媒的機能を示す。Means for Solving the Problems In the present invention, it is preferable to add the above-mentioned tertiary amine represented by imidazole to the first stage to a cooking liquor composed of phenols and water. Add in an amount in the range of 5 to 10% by weight with respect to the chip. The tertiary amine added here exhibits a catalytic function by synergizing the hydrolysis of the acetic acid ester in wood into acid and hydroxyl group with phenols in the cooking liquor, such as cresol.
すなわち、アセテートのカルボニル基へ３級アミンの
求核付加が起り、続いて、不安定なアシルトリアルキル
アンモニウムイオンが速やかに加水分解されて酢酸を生
成し、これによりパルプ化が促進されるようになる。That is, nucleophilic addition of a tertiary amine occurs to the carbonyl group of acetate, and then unstable acyltrialkylammonium ion is rapidly hydrolyzed to generate acetic acid, which accelerates pulping. Become.
一方、本発明では、第２段目としてモルホリンを代表
２級アミンを絶乾チツプに対して２〜５重量％の範囲の
量を上記蒸解液に添加し、さらに、蒸解温度を従来法よ
り10℃下げることにより原料中の炭水化物の崩壊溶出を
抑制する。On the other hand, in the present invention, as the second step, an amount of morpholine, a representative secondary amine, in the range of 2 to 5% by weight based on the absolutely dried chips is added to the above-mentioned cooking liquor, and the cooking temperature is 10 By lowering the temperature by ° C, the dissolution and elution of carbohydrates in the raw material is suppressed.
すなわち、この第２段目の２級アミンの添加により、
２級アミンが蒸解系を支配するようになつて、酸捕獲剤
或は低分子化したリグニン同士の親電子的活性部位への
再結合防止剤として作用する。したがつて、蒸解液は２
級アミンを添加する段階で入れ替える必要は全くない。
なお、２級アミンに代えてアニリンのような１級アミン
を用いてもよい。That is, by the addition of the secondary amine in the second step,
As the secondary amine becomes dominant in the cooking system, it acts as an acid scavenger or a recombination inhibitor for the electrophilic active site between the lignins having a reduced molecular weight. Therefore, the cooking liquor is 2
There is no need to replace the primary amine at the stage of addition.
A primary amine such as aniline may be used instead of the secondary amine.
本発明で用いる３級アミンはとしては、ピラジン、ピ
ラゾール、ピリジン、イミダゾール、1,4−ジアザビシ
クロ〔2,2,2〕オクタン、トリエチルアミン等を例示し
得、また、２級アミンとしては、モルホリン、ピペラジ
ン、ピペリジン等を例示し得、１級アミンとしてはアニ
リン、ベンジルアミン等を例示できる。Examples of the tertiary amine used in the present invention include pyrazine, pyrazole, pyridine, imidazole, 1,4-diazabicyclo [2,2,2] octane, triethylamine and the like, and the secondary amine includes morpholine, Examples thereof include piperazine and piperidine, and examples of primary amines include aniline and benzylamine.
上述のとおり、本発明は、塩基性、求核性及び還元性
をその化学的、物理化学的特性とする３級アミンを第１
段階でその求核的挙動による反応促進剤として用い、塩
基性及び求核性を兼ね備えた２級アミン又は１級アミン
を第２段階で反応阻害剤或は反応遅延剤として用いて、
蒸解液に添加するアミン類を使い分けることによつて、
フエノール類と水との混合物からなる蒸解液を用いるパ
ルプ化法におけるパルプの収率と品質を向上することが
可能となる。なお、本発明は、広葉樹に対して特に顕著
な効果を奏する。As mentioned above, the present invention provides a primary tertiary amine having basic, nucleophilic and reducing properties as its chemical and physicochemical properties.
Used as a reaction accelerator due to its nucleophilic behavior in the step, and using a secondary amine or primary amine having both basicity and nucleophilicity as a reaction inhibitor or reaction retarder in the second step,
By properly using the amines added to the cooking liquor,
It is possible to improve the yield and quality of pulp in a pulping method using a cooking liquor composed of a mixture of phenols and water. The present invention exerts a particularly remarkable effect on broad-leaved trees.
以下実施例により本発明及びその効果を具体的に説明
する。Hereinafter, the present invention and its effects will be specifically described with reference to examples.
実施例１ 広葉樹チツプ600gを薬液循環式5L容オートクレーブに
詰め、これにトリクレゾール（ｏ−,m−,p−クレゾール
1:1:1w/w/w）と水の混合液（8:2w/w）を液比6.5:1で加
え、さらに、イミダゾールを絶乾チツプ重量に対して10
％添加して185℃で75分間蒸解した。次に、90℃まで急
冷して、絶乾チツプ重量に対して2.5％のモルホリンを
添加して175℃で120分間蒸解した。結果は表１に示すと
おりである。一方、比較のため、イミダゾールとモルホ
リンを無添加で185℃で180分蒸解を行なつたもの（比較
例１）についても下記の表１に示す。Example 1 600 g of a hardwood chip was packed in a 5 L autoclave with a liquid circulation system, and tricresole (o-, m-, p-cresol) was placed in this.
1: 1: 1w / w / w) and water mixture (8: 2w / w) was added at a liquid ratio of 6.5: 1, and then imidazole was added to the absolute dry chip weight of 10: 1.
%, And the mixture was cooked at 185 ° C. for 75 minutes. Then, it was rapidly cooled to 90 ° C, 2.5% of morpholine was added to the weight of the absolutely dried chips, and the mixture was cooked at 175 ° C for 120 minutes. The results are shown in Table 1. On the other hand, for the purpose of comparison, Table 1 below also shows the one cooked for 180 minutes at 185 ° C. without adding imidazole and morpholine (Comparative Example 1).
実施例２ 広葉樹チツプ600gを薬液循環式5L容オートクレーブに
詰め、これにトリクレゾール（ｏ−,m−,p−クレゾール
1:1:1w/w/w）と水の混合液（8:2w/w）を液比6.5:1で加
え、さらに、イミダゾールを絶乾チツプ重量に対して10
％添加して185℃で120分間蒸解した。一方、比較のた
め、無添加で185℃で120分蒸解した（比較例２）。結果
は表２に示すとおりである。 Example 2 600 g of a hardwood chip was packed in a chemical circulation type 5 L autoclave, and tricresole (o-, m-, p-cresol) was packed therein.
1: 1: 1w / w / w) and water mixture (8: 2w / w) was added at a liquid ratio of 6.5: 1, and then imidazole was added to the absolute dry chip weight of 10: 1.
% And added and cooked at 185 ° C. for 120 minutes. On the other hand, for comparison, it was cooked at 185 ° C. for 120 minutes without addition (Comparative Example 2). The results are shown in Table 2.
実施例３ 広葉樹チツプ600gを薬液循環式5L容オートクレーブに
詰め、これにトリクレゾール（ｏ−,m−,p−クレゾール
1:1:1w/w/w）と水の混合液（8:2w/w）を液比6.5:1で加
え、さらに、モルホリンを絶乾チツプ重量に対して0.5
％添加して185℃で180分間蒸解した。収率53.7％、カツ
パー値43であつた。参考のため、５％モルホリン添加し
て185℃で300分蒸解した。収率53.0％。カツパー値32で
あつた。 Example 3 600 g of a hardwood chip was packed in a chemical circulation type 5 L autoclave, and tricresole (o-, m-, p-cresol) was placed therein.
1: 1: 1w / w / w) and water mixture (8: 2w / w) was added at a liquid ratio of 6.5: 1, and morpholine was added to 0.5% by weight of the absolutely dry chip.
%, And cooked at 185 ° C for 180 minutes. The yield was 53.7% and the cupper value was 43. For reference, 5% morpholine was added and the mixture was cooked at 185 ° C for 300 minutes. Yield 53.0%. The Kupper value was 32.
実施例４ 広葉樹チツプ600gを薬液循環式5L容オートクレーブに
詰め、これにトリクレゾール（ｏ−,m−,p−クレゾール
1:1:1w/w/w）と水の混合液（8:2w/w）を液比6.5:1で加
え、さらに、絶乾チツプ重量に対してピリジンを５％、
モルホリンを2.5％同時に添加して185℃で180分間蒸解
した。収率54.5％、カツパー値43であつた。一方比較の
ため、５％ピリジンのみを添加して185℃で180分蒸解し
た。収率51.2％、カツパー値31であつた。Example 4 600 g of a hardwood chip was packed in a liquid circulation type 5 L autoclave, and tricresole (o-, m-, p-cresol) was placed therein.
1: 1: 1w / w / w) and water mixture (8: 2w / w) was added at a liquid ratio of 6.5: 1, and 5% pyridine was added to the weight of the absolutely dry chips.
Morpholine 2.5% was added simultaneously and cooked at 185 ° C for 180 minutes. The yield was 54.5% and the cupper value was 43. On the other hand, for comparison, only 5% pyridine was added and cooked at 185 ° C for 180 minutes. The yield was 51.2% and the cupper value was 31.
Claims (4)
質をフエノール類と水からなる蒸解液を用いて蒸解して
パルプ化するに際し、該蒸解液にアミン類を添加するこ
とを特徴とするパルプの製造方法。1. A method for producing a pulp, which comprises adding amines to a wood or other lignocellulosic material when the pulp is prepared by digesting wood or other lignocellulosic material with a cooking liquor composed of phenols and water. .
ジン、ピラゾール、ピリジン、イミダゾール、1,4−ジ
アザビシクロ〔2,2,2〕オクタン及びトリエチルアミン
等から成る群から選択される３級アミンの１種以上の化
合物と、アニリン、モルホリン、ピペラジン、ベンジル
アミン及びピペリジン等から成る群から選択される１級
アミンもしくは２級アミンの１種以上の化合物とを、１
段階或は２段階で添加する特許請求の範囲第（１）項記
載のパルプの製造方法。2. A cooking liquor consisting of phenols and water, containing a tertiary amine selected from the group consisting of pyrazine, pyrazole, pyridine, imidazole, 1,4-diazabicyclo [2,2,2] octane and triethylamine. One or more compounds and one or more compounds of primary amines or secondary amines selected from the group consisting of aniline, morpholine, piperazine, benzylamine, piperidine, etc.
The method for producing pulp according to claim (1), wherein the pulp is added in stages or in two stages.
アミン化合物を添加し、第２段階で１種以上の２級アミ
ンを添加する特許請求の範囲第（２）項記載のパルプの
製造方法。3. The method according to claim 2, wherein one or more tertiary amine compounds are added to the cooking liquor in the first step, and one or more secondary amine compounds are added in the second step. Method for producing pulp.
添加し、第２段階でモルホリンを添加する特許請求の範
囲第（２）項記載のパルプの製造方法。4. The method for producing pulp according to claim (2), wherein imidazole is added to the cooking liquor in the first step and morpholine is added in the second step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14254887A JPH0814077B2 (en) | 1987-06-08 | 1987-06-08 | VALPE MANUFACTURING METHOD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14254887A JPH0814077B2 (en) | 1987-06-08 | 1987-06-08 | VALPE MANUFACTURING METHOD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63309689A JPS63309689A (en) | 1988-12-16 |
| JPH0814077B2 true JPH0814077B2 (en) | 1996-02-14 |
Family
ID=15317909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14254887A Expired - Lifetime JPH0814077B2 (en) | 1987-06-08 | 1987-06-08 | VALPE MANUFACTURING METHOD |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0814077B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7086557B2 (en) * | 2017-10-04 | 2022-06-20 | 日華化学株式会社 | Method for producing digestion accelerator and pulp |
| JP7777043B2 (en) * | 2022-06-30 | 2025-11-27 | 日華化学株式会社 | Cooking accelerator and method for producing pulp using the same |
-
1987
- 1987-06-08 JP JP14254887A patent/JPH0814077B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63309689A (en) | 1988-12-16 |
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