JPS59150191A - Deinking of waste paper - Google Patents
Deinking of waste paperInfo
- Publication number
- JPS59150191A JPS59150191A JP58024204A JP2420483A JPS59150191A JP S59150191 A JPS59150191 A JP S59150191A JP 58024204 A JP58024204 A JP 58024204A JP 2420483 A JP2420483 A JP 2420483A JP S59150191 A JPS59150191 A JP S59150191A
- Authority
- JP
- Japan
- Prior art keywords
- deinking
- waste paper
- paper
- fatty acid
- pulp
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Paper (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は新聞、雑誌、書籍などの印刷古紙を水溶性脂肪
酸塩を用いて脱墨し、再生パルプを製造する改良された
古紙の脱墨方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved method for deinking printed waste paper such as newspapers, magazines, books, etc. using a water-soluble fatty acid salt to produce recycled pulp.
製紙用パルプ原料の涸渇化に伴い、印刷古紙からパルプ
を再生してこれを製紙に再利用することは古くから行な
われている。印刷古紙をパルプに再生する場合には、通
常パルパーなどの離解機が使用され、細かに裁断した印
刷古紙を離解しながら、これにアルカリと界面活性剤を
必要に応じて漂白剤の存在下に作用させることによシ、
インキを古紙から脱離させ、次いで脱離インキを７０−
テーシヨンしてパルプスラリーから分離する方法が広く
採用されている。With the depletion of pulp raw materials for paper manufacturing, recycling pulp from used printing paper and reusing it for paper manufacturing has been practiced for a long time. When recycled printed paper is recycled into pulp, a disintegrating machine such as a pulper is usually used. While disintegrating the printed waste paper that has been cut into small pieces, alkali and surfactant are added to it in the presence of bleach if necessary. By making it work,
The ink is desorbed from the waste paper, and then the desorbed ink is
A method of separating pulp from pulp slurry using pulp milling is widely used.
印刷古紙に脱墨処理を施す場合、脱墨効果の面から界面
活性剤の使用が不可欠であり、脂肪酸石鹸、アルキルベ
ンゼンスルホン酸塩、オレフィンスルホン酸塩、アルキ
ル硫酸塩などのアニオン界面活性剤、ポリオキシエチレ
ンアルキルエーテル。When deinking used printed paper, it is essential to use a surfactant to improve the deinking effect. Oxyethylene alkyl ether.
ポリオキシエチレンアルキルアリールエーテルなどの非
イオン界面活性剤及びカチオン界面活性剤が知られてい
る。しかし、これら従来の脱墨用界面活性剤は、脱離イ
ンキを捕集する能力が不充分なため多くの場合２種以上
の界面活性剤を混合使用しているが、それにもかかわら
ず脱墨処理して得られた再生パルプから製造される再生
紙は白色度が十分でなく、さらに脱墨効果の改善が望ま
れている。Nonionic surfactants and cationic surfactants such as polyoxyethylene alkylaryl ethers are known. However, these conventional surfactants for deinking have insufficient ability to collect detached ink, so in many cases two or more surfactants are used in combination. Recycled paper produced from the recycled pulp obtained by the treatment does not have sufficient whiteness, and further improvement in deinking effect is desired.
本発明は印刷古紙を脱墨する際の脱墨効果の改善を目的
として行なわれたものであって、古紙を離解工程と７０
−テーシヨン工程からなるフローテーション法により古
紙を脱墨するにあたり、炭素数１０〜２０の脂肪酸又は
その水溶性塩の存在下に古紙を離解し、次いで第四級ア
ンモニウム塩型カチオン界面活性剤を添加し、フローテ
ーションすることを特徴とする。The present invention was carried out with the aim of improving the deinking effect when deinking printed waste paper, and the present invention is aimed at improving the deinking effect when deinking used printed paper.
- When deinking waste paper by a flotation method consisting of a washing process, the waste paper is disintegrated in the presence of a fatty acid having 10 to 20 carbon atoms or its water-soluble salt, and then a quaternary ammonium salt type cationic surfactant is added. It is characterized by floating.
本発明の脱墨方法は印刷古紙の種類によらず適用するこ
とができ、例えば新聞、雑誌、書籍などの印刷物、ある
いは凸版印刷、オフセット印刷。The deinking method of the present invention can be applied regardless of the type of printed waste paper, such as printed materials such as newspapers, magazines, and books, letterpress printing, and offset printing.
グラビア印刷などの印刷方法による印刷物などに適用す
ることができる。It can be applied to printed materials produced by printing methods such as gravure printing.
本発明の脱墨方法は離解工程とフローテーション工程を
必須とし、必要に応じ離解工程の後に熟成工程を置くこ
ともできる。印刷古紙の離解は古紙を適当な大きさに細
断したものを、苛性ソーダ。The deinking method of the present invention requires a disintegration step and a flotation step, and if necessary, a maturation step can be placed after the disintegration step. To disintegrate printed waste paper, shred the waste paper into appropriate size pieces and use caustic soda.
珪酸ソーダ及びリン酸ソーダなどのアルカリ剤を含む水
に分散させ、スラリー化させることにより行なわれる。This is carried out by dispersing in water containing an alkaline agent such as sodium silicate and sodium phosphate to form a slurry.
このとき、必要に応じて過酸化水素などの標白剤が使用
される。本発明はこの離解工程において、印刷インキを
水中に分散させるために脂肪酸塩を使用する。脂肪酸と
しては炭素数１０〜２０、好ましくは炭素数１０〜１８
の飽和又は不飽和の脂肪酸が適当であシ、使用に際して
酸又は水溶性の塩として用いられる。本発明に適した脂
肪酸として、例えばラウリン酸、ステアリン酸、オレイ
ン酸、ヤシ油脂肪酸、牛脂脂肪酸などが挙げられる。水
溶性塩としては、ソーダ塩、カリウム塩などのアルカリ
金属塩及びアンモニウム塩が適している。離解工程にお
ける脂肪酸塩の使用量は古紙に対して０．１〜２重量％
、好ましくは０．３〜１重量％である。脂肪酸塩の使用
量がこれよシ少ない場合は脱墨効果が不十分であり、一
方便用量をこれよシ多くしても効果の向上は期待できな
いので、前記の範囲が適当である。At this time, a whitening agent such as hydrogen peroxide is used if necessary. In this disintegration step, the present invention uses a fatty acid salt to disperse the printing ink in water. The fatty acid has 10 to 20 carbon atoms, preferably 10 to 18 carbon atoms.
Saturated or unsaturated fatty acids are suitable and used as acids or water-soluble salts. Fatty acids suitable for the present invention include, for example, lauric acid, stearic acid, oleic acid, coconut oil fatty acid, beef tallow fatty acid, and the like. Suitable water-soluble salts include alkali metal salts such as soda salts and potassium salts, and ammonium salts. The amount of fatty acid salt used in the disintegration process is 0.1 to 2% by weight based on the waste paper.
, preferably 0.3 to 1% by weight. If the amount of fatty acid salt used is less than this, the deinking effect will be insufficient, and on the other hand, even if the amount of stool is increased, no improvement in the effect can be expected, so the above range is appropriate.
本発明の脱墨方法において離解工程の後、フローテーシ
ョン工程の前に添加される第四級アンモニウム塩型カチ
オン界面活性剤は一般式（式中、Ｒ１は炭素数１０〜２
２のアルキル基又はアルケニル基であシ、Ｗは炭素数１
〜２２のアルキル基又はアルケニル基で６Ｄ、Ｒ’及び
臣は各北炭素数１〜３のアルキル基、ベンジル基又は（
ＣＨｚＣ）ｈｏ）ｍＨであり、Ａは結合手又は■ＮＨＣ
Ｈ２ＣＨ２であシ、ｍは１〜３０の数であり、Ｘは１価
のアニオンである。）で示されるモノアルキル型又はジ
アルキル型の第四級アンモニウム塩又は一般式
（式中、ｍＲ６は各セ炭素数ｌｏ〜２２のアルキル基又
はアルケニル基であｆｉ 、ｌ（，７は炭素数１〜３の
アルキル基であり、Ｙは１価のアニオンである。）で示
されるイミダシリン型第四級アンモニウム塩である。本
発明において使用するカチオン界面活性剤はクロライド
、ブロマイドなどのハライド塩又はメトサルフェート、
エトサルフェートなどのアルキルサルフェート塩が適当
である。これらのカチオン界面活性剤の使用量は古紙に
対して０．２〜６重量％、好ましくは０．５〜５重量％
であり、使用量がこれよシ少々い場合は脱墨効果が不十
分であシ、一方、使用量が増すにつれて効果の向上する
程度が小さくなるので、前記の範囲が適当である。In the deinking method of the present invention, the quaternary ammonium salt type cationic surfactant added after the disintegration step and before the flotation step has the general formula (wherein R1 has a carbon number of 10 to 2
2 alkyl or alkenyl groups, W has 1 carbon number
-22 alkyl group or alkenyl group, and 6D, R' and Omi are each alkyl group having 1 to 3 north carbon atoms, benzyl group or (
CHzC)ho)mH, A is a bond or ■NHC
H2CH2, m is a number from 1 to 30, and X is a monovalent anion. ) or a monoalkyl-type or dialkyl-type quaternary ammonium salt represented by the general formula (in the formula, mR6 is an alkyl group or alkenyl group each having 1 to 22 carbon atoms, fi, 7 is a carbon number of 1 -3 alkyl group, and Y is a monovalent anion.) The cationic surfactant used in the present invention is a halide salt such as chloride or bromide, or sulfate,
Alkyl sulfate salts such as ethosulfate are suitable. The amount of these cationic surfactants used is 0.2 to 6% by weight, preferably 0.5 to 5% by weight based on the waste paper.
If the amount used is a little less than this, the deinking effect will be insufficient. On the other hand, as the amount used increases, the degree of improvement in the effect becomes smaller, so the above range is appropriate.
本発明の方法によれば、離解工程において脂肪酸塩のす
ぐれたインキ分散力を生かしてインキを古紙から脱離さ
せ、次いでカチオン界面活性剤を添加して脂肪酸とカチ
オン界面活性剤の疎水性塩を形成させ、高い脱離インキ
の捕集力を発揮させることができ、その結果白色度の高
い再生紙を得ることができる。According to the method of the present invention, ink is released from waste paper by taking advantage of the excellent ink dispersion power of fatty acid salts in the disintegration process, and then a cationic surfactant is added to dissolve fatty acids and hydrophobic salts of the cationic surfactants. It is possible to form a removable ink and exhibit a high ability to collect detached ink, and as a result, it is possible to obtain recycled paper with a high degree of whiteness.
以下に実施例を示して本発明をさらに詳細に説明する。The present invention will be explained in more detail by showing examples below.
実施例
原料の新聞古紙を細断し、パルプ離解機（ＪＩＳＰ−８
２０９）に入れ、古紙の重量に対して粒状苛性ソーダ１
．５％、４０チ３号ケイ酸ソーダ３．５％、過酸化水素
０．７５％（有効成分換算）及び次表に記載の添加剤を
加え、原料濃度が５％となるように水を加えて５５°Ｃ
に加温して２０分開離解処理を行なった。The waste newspaper used as the raw material for the example was shredded and processed using a pulp disintegrator (JISP-8
209) and add 1 part of granulated caustic soda to the weight of waste paper.
．． 5%, No. 3 sodium silicate 3.5%, hydrogen peroxide 0.75% (active ingredient equivalent), and the additives listed in the following table, and add water to make the raw material concentration 5%. 55°C
The mixture was heated to a temperature of 100.degree. C. and subjected to dissociation treatment for 20 minutes.
次いで原料濃度が１．０チになるように希釈し、次表に
記載の添加剤を加え試験用フローテータ−（極東振興■
製）を用いてフローテーション処理をした。Next, dilute the raw material to a concentration of 1.0%, add the additives listed in the table below, and use a test floatator (Kyokuto Shinko).
Flotation treatment was carried out using
得られたパルプ液を標準型シートマシン（ＪＩＳＰ−８
２０９）にかけて再生紙を坪量約６０Ｑ／ｄで調整し、
再生紙の白炭をＪＩＳＰ−８１２３の方法に基づいて、
ハンター白変で測定した。The obtained pulp liquid was passed through a standard sheet machine (JISP-8
209) to adjust the recycled paper to a basis weight of approximately 60Q/d,
Based on the JISP-8123 method, white charcoal from recycled paper is
Measured using Hunter Albinism.
また、原料新聞古紙及びその未印刷部分を、添加剤を使
用せずに同条件で脱墨処理を行ない、再生紙を調整し、
その白炭を測定した結果、それぞれ、４４．０％及び５
２．０％であった。印刷インキの除去効果を白変向上率
として次式によシ求めた。In addition, recycled paper is prepared by deinking raw newspaper waste paper and its unprinted parts under the same conditions without using additives.
The results of measuring the white charcoal were 44.0% and 5%, respectively.
It was 2.0%. The printing ink removal effect was determined as the whitening improvement rate using the following formula.
結果を次表に示す。The results are shown in the table below.
注） ＊ｌ：カチオン界面活性剤Ａ ＊２：カチオン界面活性剤Ｂ ＊３：カチオン界面活性剤Ｃ （ＲＣＯは牛脂脂肪酸残基である。）Note) *l: Cationic surfactant A *2: Cationic surfactant B *3: Cationic surfactant C (RCO is beef tallow fatty acid residue.)
Claims (1)
古紙を離解し、次いで第四級アンモニウム塩型カチオン
界面活性剤を添加し、フローテーションすることを特徴
とする古紙の脱墨方法。A method for deinking waste paper, which comprises disintegrating waste paper in the presence of a fatty acid having 10 to 20 carbon atoms or a water-soluble salt thereof, and then adding a quaternary ammonium salt type cationic surfactant and flotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58024204A JPS59150191A (en) | 1983-02-16 | 1983-02-16 | Deinking of waste paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58024204A JPS59150191A (en) | 1983-02-16 | 1983-02-16 | Deinking of waste paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59150191A true JPS59150191A (en) | 1984-08-28 |
Family
ID=12131783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58024204A Pending JPS59150191A (en) | 1983-02-16 | 1983-02-16 | Deinking of waste paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59150191A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4710267A (en) * | 1984-03-19 | 1987-12-01 | Berol Kemi Ab | Process for reducing discoloration and/or tackiness in processing waste paper fibers |
| US4935096A (en) * | 1988-12-06 | 1990-06-19 | Garden State Paper Company, Inc. | Process for the deinking of cellulosic materials |
| US5151155A (en) * | 1991-05-09 | 1992-09-29 | Rheox, Inc. | Process for deinking wastepaper with organically modified smectite clay |
| JPH10501286A (en) * | 1994-06-09 | 1998-02-03 | エス．シー．ジョンソン アンド サン，インコーポレーテッド | Glass cleaner with improved antifogging properties |
| EP0834614A3 (en) * | 1996-10-02 | 2000-01-12 | Kao Corporation | Deinking process |
| US7169257B2 (en) | 2003-11-12 | 2007-01-30 | Kemira Chemicals, Inc. | Method of deinking waste paper using a reduced alkali system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5153005A (en) * | 1974-10-31 | 1976-05-11 | Nissan Chemical Ind Ltd | Koshino datsubokuhoho |
-
1983
- 1983-02-16 JP JP58024204A patent/JPS59150191A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5153005A (en) * | 1974-10-31 | 1976-05-11 | Nissan Chemical Ind Ltd | Koshino datsubokuhoho |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4710267A (en) * | 1984-03-19 | 1987-12-01 | Berol Kemi Ab | Process for reducing discoloration and/or tackiness in processing waste paper fibers |
| US4935096A (en) * | 1988-12-06 | 1990-06-19 | Garden State Paper Company, Inc. | Process for the deinking of cellulosic materials |
| US5151155A (en) * | 1991-05-09 | 1992-09-29 | Rheox, Inc. | Process for deinking wastepaper with organically modified smectite clay |
| JPH10501286A (en) * | 1994-06-09 | 1998-02-03 | エス．シー．ジョンソン アンド サン，インコーポレーテッド | Glass cleaner with improved antifogging properties |
| EP0834614A3 (en) * | 1996-10-02 | 2000-01-12 | Kao Corporation | Deinking process |
| US7169257B2 (en) | 2003-11-12 | 2007-01-30 | Kemira Chemicals, Inc. | Method of deinking waste paper using a reduced alkali system |
| US7767057B2 (en) | 2003-11-12 | 2010-08-03 | Kemira Chemicals, Inc. | Deinking blends for use in reduced alkali systems |
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