CN108425259A - 废纸回收再造的方法 - Google Patents
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
- D21B1/325—Defibrating by other means of waste paper de-inking devices
- D21B1/327—Defibrating by other means of waste paper de-inking devices using flotation devices
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- 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Abstract
本发明提供一种废纸回收再造的方法。本发明的方法包括(1)粉碎溶解:将废纸原料分类进行粉碎溶解;(2)过滤:将溶解后的废纸原料进行过滤,去除废纸原料中杂质;(3)浓缩脱墨:将过滤好的材质放入浓缩机进行浓缩,浓缩后进行洗涤脱墨,去除表面的浮色;(4)漂白处理:对脱墨后的废纸原料进行漂白,制浆,成为再生纸浆;(5)用植物纤维制造长纤维纸浆;(6)造纸:将步骤(5)中制得的长纤维纸浆和步骤(4)中制得的再生纸浆按照质量比为1:(0.6‑2.5)的比例进行使其均匀的交织和脱水,再经干燥、压光、卷纸;(7)裁切、选别、包装。本发明的方法所得纤维质量高,可作为各种高级纸张的备选原料。
Description
技术领域:
本发明涉及一种废纸回收再造的方法,属于造纸工艺技术领域。
背景技术:
废纸回收的成本问题废纸回收利用,最有吸引力的一直是因其成本低而占优势。然而废纸是不可能无限度地被反复循环回用的,其极限是取决于纤维质量的劣化速度和程度。在处理旧报纸浆料中,其中含有的高得率机械木浆,包括化学热磨机械浆和压力磨石磨木浆,保留有较高的木素,纤维挺硬。经机械碎解处理后,纤维变得更加柔软和微纤维化,有利于纤维结构的键合,可抄出更紧密、更平滑的新闻纸。但旧报纸中的化学浆纤维,因在成纸过程中曾被键合过,纤维本身结构密实,空腔减少很多,表面难于水化,纤维变得“僵硬”,粘度降低,成纸强度下降。
实验室和工厂的实践证明,随着废纸循环次数的增加,废纸纸浆的物理强度呈直线下降趋势,每循环一次,耐破和抗张强度下降至原来纤维浆料强度的60—70%。由此可见,纸料中单根纤维循环回用是有一定限度的。这给废纸的回收利用带来了一定的局限性。
发明内容:
本发明的目的是针对上述存在的问题提供一种废纸回收再造的方法,所得纤维质量高,可作为各种高级纸张的备选原料。
上述的目的通过以下的技术方案实现:
废纸回收再造的方法,该方法包括以下步骤:
(1)粉碎溶解:将废纸原料分类进行粉碎溶解;
(2)过滤:将溶解后的废纸原料进行过滤,去除废纸原料中杂质;
(3)浓缩脱墨:将过滤好的材质放入浓缩机进行浓缩,浓缩后进行洗涤脱墨,去除表面的浮色;
(4)漂白处理:对脱墨后的废纸原料进行漂白,制浆,成为再生纸浆;
(5)用植物纤维制造长纤维纸浆;
(6)造纸:将步骤(5)中制得的长纤维纸浆和步骤(4)中制得的再生纸浆按照质量比为1:(0.6-2.5)的比例进行使其均匀的交织和脱水,再经干燥、压光、卷纸;
(7)裁切、选别、包装。
所述的废纸回收再造的方法,步骤(3)中所述的脱墨处理是采用质量百分比为5%的氢氧化钠、5%的硅酸钠、6%的烷基苯磺酸钠的混合溶液作为脱墨剂,将脱墨剂与废纸浆按照质量比1:5的比例,在60℃浸喷1h,再用60℃的水于碎浆机中稀释至5%,碎解10~15min,再稀释至3%,用泵打入盘磨机中磨浆,最后稀至1%,并用浮选法分出油墨,经筛选可得白度75.8%的纸浆。
所述的废纸回收再造的方法,步骤(4)中所述的漂白处理是采用过氧化氢作为漂白剂,pH10.5-11.0,温度50-80℃的条件下进行。
所述的废纸回收再造的方法,步骤(5)中所述的植物纤维选自木材、稻草、麦秸、玉米秸秆中的一种或者多种的组合。
所述的废纸回收再造的方法,步骤(6)中所述的长纤维纸浆和再生纸浆的比例为1:1.8。
有益效果:
本发明将长纤维纸浆与再生纸浆联合使用,克服了废纸纸浆物理强度低的问题,所得纤维质量高,可作为各种高级纸张的备选原料。
具体实施方式:
实施例1:
废纸回收再造的方法,该方法包括以下步骤:
(1)粉碎溶解:将废纸原料分类进行粉碎溶解;
(2)过滤:将溶解后的废纸原料进行过滤,去除废纸原料中杂质;
(3)浓缩脱墨:将过滤好的材质放入浓缩机进行浓缩,浓缩后进行洗涤脱墨,去除表面的浮色;
(4)漂白处理:对脱墨后的废纸原料进行漂白,制浆,成为再生纸浆;
(5)用植物纤维制造长纤维纸浆;
(6)造纸:将步骤(5)中制得的长纤维纸浆和步骤(4)中制得的再生纸浆按照质量比为1:1.8的比例进行使其均匀的交织和脱水,再经干燥、压光、卷纸;
(7)裁切、选别、包装。
本实施例中所述的废纸回收再造的方法,步骤(3)中所述的脱墨处理是采用质量百分比为5%的氢氧化钠、5%的硅酸钠、6%的烷基苯磺酸钠的混合溶液作为脱墨剂,将脱墨剂与废纸浆按照质量比1:5的比例,在60℃浸喷1h,再用60℃的水于碎浆机中稀释至5%,碎解10~15min,再稀释至3%,用泵打入盘磨机中磨浆,最后稀至1%,并用浮选法分出油墨,经筛选可得白度75.8%的纸浆。
本实施例中所述的废纸回收再造的方法,步骤(4)中所述的漂白处理是采用过氧化氢作为漂白剂,pH10.5-11.0,温度50-80℃的条件下进行。
本实施例中所述的废纸回收再造的方法,步骤(5)中所述的植物纤维选自木材、稻草、麦秸、玉米秸秆中的一种或者多种的组合。
实施例2:
本实施例与实施例1的不同之处在于,本实施例中步骤(6)中所述的长纤维纸浆和再生纸浆的比例为1:0.6。
实施例3:
本实施例与实施例1的不同之处在于,本实施例中步骤(6)中所述的长纤维纸浆和再生纸浆的比例为1:1.5。
实施例4:
本实施例与实施例1的不同之处在于,本实施例中步骤(6)中所述的长纤维纸浆和再生纸浆的比例为1:2.5。
实施例5:
本实施例与实施例1的不同之处在于,本实施例中步骤(6)中所述的长纤维纸浆和再生纸浆的比例为1:1。
本发明方案所公开的技术手段不仅限于上述技术手段所公开的技术手段,还包括由以上技术特征等同替换所组成 的技术方案。本发明的未尽事宜,属于本领域技术人员的公知常识。
Claims (5)
1.一种废纸回收再造的方法,其特征是:该方法包括以下步骤:
(1)粉碎溶解:将废纸原料分类进行粉碎溶解;
(2)过滤:将溶解后的废纸原料进行过滤,去除废纸原料中杂质;
(3)浓缩脱墨:将过滤好的材质放入浓缩机进行浓缩,浓缩后进行洗涤脱墨,去除表面的浮色;
(4)漂白处理:对脱墨后的废纸原料进行漂白,制浆,成为再生纸浆;
(5)用植物纤维制造长纤维纸浆;
(6)造纸:将步骤(5)中制得的长纤维纸浆和步骤(4)中制得的再生纸浆按照质量比为1:(0.6-2.5)的比例进行使其均匀的交织和脱水,再经干燥、压光、卷纸;
(7)裁切、选别、包装。
2.根据权利要求1所述的废纸回收再造的方法,其特征是:步骤(3)中所述的脱墨处理是采用质量百分比为5%的氢氧化钠、5%的硅酸钠、6%的烷基苯磺酸钠的混合溶液作为脱墨剂,将脱墨剂与废纸浆按照质量比1:5的比例,在60℃浸喷1h,再用60℃的水于碎浆机中稀释至5%,碎解10~15min,再稀释至3%,用泵打入盘磨机中磨浆,最后稀至1%,并用浮选法分出油墨,经筛选可得白度75.8%的纸浆。
3.根据权利要求1所述的废纸回收再造的方法,其特征是:步骤(4)中所述的漂白处理是采用过氧化氢作为漂白剂,pH10.5-11.0,温度50-80℃的条件下进行。
4.根据权利要求1所述的废纸回收再造的方法,其特征是:步骤(5)中所述的植物纤维选自木材、稻草、麦秸、玉米秸秆中的一种或者多种的组合。
5.根据权利要求1所述的废纸回收再造的方法,其特征是:步骤(6)中所述的长纤维纸浆和再生纸浆的比例为1:1.8。
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110965388A (zh) * | 2018-09-29 | 2020-04-07 | 宁波方太厨具有限公司 | 一种杀菌除味剂及纸张的制备方法 |
CN111101393A (zh) * | 2020-01-07 | 2020-05-05 | 漳州市鑫顺兴纸塑有限公司 | 一种利用废纸再生产的节能环保型广告纸及其生产方法 |
WO2020188306A1 (en) | 2019-03-20 | 2020-09-24 | Celltech-Paper Kft. | Method for recycling waste paper containing plant-based fibres and at least partially coated with a wet-strengthening material, and packaging material produced using the method |
EP3751051A1 (en) * | 2019-06-13 | 2020-12-16 | Wöllner GmbH | Use of probiotic bacteria for inhibiting the decomposition of peroxide in the deinking of recycled fiber pulp |
CN113891971A (zh) * | 2019-06-04 | 2022-01-04 | 兰精股份公司 | 木质纤维素原料和含纤维素却无木质素的产品的联合制备 |
CN114645478A (zh) * | 2020-12-19 | 2022-06-21 | 山东洲星天然物提取智能设备有限公司 | 一种精制棉及纤维素醚的制备方法 |
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2018
- 2018-03-20 CN CN201810231387.XA patent/CN108425259A/zh active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110965388A (zh) * | 2018-09-29 | 2020-04-07 | 宁波方太厨具有限公司 | 一种杀菌除味剂及纸张的制备方法 |
WO2020188306A1 (en) | 2019-03-20 | 2020-09-24 | Celltech-Paper Kft. | Method for recycling waste paper containing plant-based fibres and at least partially coated with a wet-strengthening material, and packaging material produced using the method |
CN113891971A (zh) * | 2019-06-04 | 2022-01-04 | 兰精股份公司 | 木质纤维素原料和含纤维素却无木质素的产品的联合制备 |
EP3751051A1 (en) * | 2019-06-13 | 2020-12-16 | Wöllner GmbH | Use of probiotic bacteria for inhibiting the decomposition of peroxide in the deinking of recycled fiber pulp |
EP3751050A1 (en) * | 2019-06-13 | 2020-12-16 | Wöllner GmbH | Use of probiotic bacteria for inhibiting the decomposition of peroxide in the deinking of recycled fiber pulp |
EP4234807A3 (en) * | 2019-06-13 | 2023-09-06 | Wöllner GmbH | Use of probiotic bacteria for inhibiting the decomposition of peroxide in the deinking of recycled fiber pulp |
CN111101393A (zh) * | 2020-01-07 | 2020-05-05 | 漳州市鑫顺兴纸塑有限公司 | 一种利用废纸再生产的节能环保型广告纸及其生产方法 |
CN114645478A (zh) * | 2020-12-19 | 2022-06-21 | 山东洲星天然物提取智能设备有限公司 | 一种精制棉及纤维素醚的制备方法 |
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