WO2019056406A1 - 一种废纸回收再利用进行造纸的工艺 - Google Patents

一种废纸回收再利用进行造纸的工艺 Download PDF

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Publication number
WO2019056406A1
WO2019056406A1 PCT/CN2017/104356 CN2017104356W WO2019056406A1 WO 2019056406 A1 WO2019056406 A1 WO 2019056406A1 CN 2017104356 W CN2017104356 W CN 2017104356W WO 2019056406 A1 WO2019056406 A1 WO 2019056406A1
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recycling
waste paper
pulp
cylinder
paper
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PCT/CN2017/104356
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English (en)
French (fr)
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凌幼祥
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南通翔龙纸业有限公司
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Publication of WO2019056406A1 publication Critical patent/WO2019056406A1/zh

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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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • 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
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
    • D21D5/24—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in cyclones
    • 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
    • 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
    • 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

Definitions

  • the invention belongs to the technical field of papermaking, and particularly relates to a process for recycling waste paper for papermaking.
  • the present invention is directed to the deficiencies in the prior art, and proposes a process for recycling and recycling waste paper for papermaking.
  • the scum utilization rate is 100%, energy can be saved by 80%, fiber loss is reduced, and the cost of the enterprise is directly reduced by 8%. Save 80% of water.
  • a process for recycling and recycling waste paper according to the present invention comprises the following steps:
  • step (2) waste paper pulverization is performed by a D-type hydraulic pulper.
  • the step (3) high concentration slag removal comprises: firstly, removing the slag by using a high concentration slag removing device, and then feeding the waste paper into the impurity separating machine to separate the waste paper into coarse pulp, scum and sediment, and the sediment is periodically discharged. Cleaning, scum is divided by impurities The scum collector above the aircraft is recovered and transported to the designated location.
  • step (4) the coarse screening is performed by overflowing the separated coarse pulp from the sieve hole above the impurity separator to the coarse pulp tank for coarse screening.
  • step (5) the fine sieving is to further perform fine sieving of the pulp in the rough syrup.
  • step (6) slanting net concentration is to connect the finely sifted pulp to the inclined sieve for water separation, and the separated water is collected in the sump below the slanting sieve, and the circulation in the collecting tank is returned to the impurity separating machine. At the same time, rinse the pulp on the scum collector.
  • the impurity separator comprises a cylinder, an annular sieve plate disposed at an upper portion of the cylinder body, a centrifugal impeller disposed at a bottom of the cylinder body, and a motor for driving the centrifugal impeller, wherein the annular sieve plate is provided with an annular collecting groove outside a bottom of the annular collecting trough is provided with a slurry outlet having a diameter of 1 cm to 1.5 cm.
  • the centrifugal impeller is composed of a wheel and a curved blade uniformly distributed on the edge of the disc And welding the bumps on the wheel and the curved blade, the curved blade is parallel to the cylinder wall, the inner wall of the cylinder is provided with a slanting plate, and the centrifugal impeller is connected to the motor through a transmission, the cylinder The transmission and the motor are arranged on the bracket.
  • the fiber is decomposed by a high-concentration decomposition machine, and the high-concentration decomposition machine comprises a cylinder body, a cone-shaped sieve plate disposed at the bottom of the cylinder body, and a centrifugal impeller disposed at the bottom of the cylinder body.
  • a motor for driving a centrifugal impeller wherein a closed space on the lower side of the tapered sieve plate is a fine pulp collection chamber, and a bottom of the fine pulp collection chamber is provided with a slurry outlet, and the diameter of the sieve hole of the tapered sieve plate is 0.15 From centimeter to 0.35 cm, the centrifugal impeller is composed of a wheel, an arcuate blade uniformly distributed on the edge of the wheel, the curved blade is parallel to the wall of the cylinder, and the inner wall of the cylinder is provided with a slanting plate, the centrifugal type
  • the impeller is connected to the motor through a transmission, and the cylinder, the transmission, and the motor are disposed on the bracket.
  • the waste paper of the present invention is recycled and reused for papermaking process, and the scum utilization rate is 100%, which can save electric energy by 80%, reduce fiber loss, directly reduce enterprise cost by 8%, and save water by 80%.
  • a process for recycling waste paper for papermaking comprising the following steps:
  • High concentration slag removal including: firstly, high-concentration slag removal device is used for slag removal, and then sent to the impurity separator through the conveyor belt to separate the waste paper into coarse pulp, scum and sediment, and the sediment is regularly cleaned and scum It is recovered by the scum collector above the impurity separator and transported to a designated location;
  • Inclined net concentration the finely sifted pulp is connected to the inclined sieve for water separation. After the separated water is collected in the sump below the inclined sieve, the circulation in the collection tank is returned to the impurity separator, and the float is floated at the same time. Pulp on the slag collector;
  • the impurity separator includes a cylinder body, an annular sieve plate disposed at an upper portion of the cylinder body, a centrifugal impeller disposed at a bottom of the cylinder body, and a motor for driving the centrifugal impeller, and an annular collecting groove is disposed outside the annular sieve plate.
  • the bottom of the annular collecting trough is provided with a slurry outlet having a diameter of 1 cm to 1.5 cm
  • the centrifugal impeller is composed of a roulette, a curved blade uniformly distributed on the edge of the disc, Soldering the bumps on the wheel and the curved blade, the curved blade is parallel to the cylinder wall, the inner wall of the cylinder is provided with a slanting plate, and the centrifugal impeller is connected to the motor through a transmission, the cylinder, The transmission and the motor are arranged on the bracket.
  • the inclined net is concentrated and then decomposed by a high-concentration decomposition machine
  • the high-concentration decomposition machine comprises a cylinder, a cone-shaped sieve plate disposed at the bottom of the cylinder body, a centrifugal impeller provided at the bottom of the cylinder body, and a drive.
  • the motor of the centrifugal impeller, the closed space on the lower side of the tapered sieve plate is a fine pulp collection chamber, the bottom of the fine pulp collection chamber is provided with a slurry outlet, and the sieve hole of the tapered sieve plate has a pore diameter of 0.15 cm.
  • the centrifugal impeller is composed of a wheel, an arc-shaped blade uniformly distributed on the edge of the wheel disc, the curved blade is parallel to the cylinder wall, and the inner wall of the cylinder is provided with a slanting plate, the centrifugal impeller
  • the transmission is connected to the motor, and the cylinder, the transmission, and the motor are disposed on the bracket.
  • the waste paper of the invention is recycled and reused to carry out the papermaking process, and the scum utilization rate is 100%, which can save electric energy by 80%, reduce fiber loss, directly reduce the enterprise cost by 8%, and save water by 80%.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

一种废纸回收再利用进行造纸的工艺，包括：(1)废纸收购；(2)废纸粉碎；(3)高浓度除渣；(4)粗筛；(5)精筛；(6)斜网浓缩；(7)存浆池存浆；(8)流浆箱流浆；(9)成型网成型；(10)压榨；(11)烘干；(12)施胶；(13)卷取；(14)复卷；(15)包装；(16)成品入库。该工艺的浮渣利用率为100％，可节约电能80％，降低企业成本8％，节约用水80％。

Description

一种废纸回收再利用进行造纸的工艺 技术领域
本发明属于造纸技术领域，具体涉及一种废纸回收再利用进行造纸的工艺。
背景技术
现在瓦楞纸浆的生产，一般由旧纸纤维直接搅拌分离，纸浆从设备的下部混合出料，浮渣与沉渣难以分离，须经除沙器、纤维分离器、离心筛、浓缩机、跳筛、磨浆机才得成品纸浆，浮渣碎片多，工艺复杂，设备成本高，耗电，生产中排放出大量的废水和大量的细纸浆，不能回收，造成极大的浪费和污染。
发明内容
发明目的：本发明针对现有技术中的不足，提出一种废纸回收再利用进行造纸的工艺，浮渣利用率100％，可节约电能80％，减少纤维流失，直接降低企业成本8％，节约用水80％。
技术方案：本发明所述的一种废纸回收再利用进行造纸的工艺，包括如下步骤：
(1)废纸收购；
(2)废纸粉碎；
(3)高浓度除渣；
(4)粗筛；
(5)精筛；
(6)斜网浓缩；
(7)存浆池存浆；
(8)流浆箱流浆；
(9)成型网成型；
(10)压榨；
(11)烘干；
(12)施胶；
(13)卷取；
(14)复卷；
(15)包装；
(16)成品入库。
进一步的，步骤(2)废纸粉碎采用D型水力碎浆机进行粉碎。
进一步的，步骤(3)高浓度除渣具体包括：首先采用高浓度除渣装置进行除渣，然后经输送带送入杂质分离机，将废纸分离成粗纸浆、浮渣和沉渣，沉渣定期清理，浮渣由杂质分 离机上方浮渣回收器回收后输送到指定的位置。
进一步的，步骤(4)粗筛是将分离后的粗纸浆由杂质分离机上方的筛孔溢出流到粗浆池，进行粗筛。
进一步的，步骤(5)精筛是将粗浆池内的纸浆进一步进行细筛。
进一步的，步骤(6)斜网浓缩是将精筛后的纸浆连接到斜筛进行水分离，分离后的水收集于斜筛下方的集水池后，集水池内的循环回用于杂质分离机，同时冲洗浮渣回收器上的纸浆。
进一步的，所述杂质分离机包括筒体、设于筒体上部的环形筛板、设于筒体底部的离心式叶轮、驱动离心式叶轮的电机，所述环形筛板外侧设有环形收集槽，所述环形收集槽底部设有出浆口，所述环形筛板的筛孔的孔径为1厘米～1.5厘米，所述离心式叶轮，由轮盘、均布于轮盘边沿的弧形叶片、焊设于轮盘和弧形叶片上的凸块，所述弧形叶片与筒壁平行，所述筒体内壁设有斜板，所述离心式叶轮通过变速器与电机相连，所述筒体、变速器、电机设于支架上。
进一步的，所述斜网浓缩后通过高浓分解机进行纤维分解，所述的高浓分解机包括筒体、设于筒体底部的锥形筛板、设于筒体底部的离心式叶轮、驱动离心式叶轮的电机，所述锥形筛板下侧的密闭空间为细纸浆收集腔，所述细纸浆收集腔底部设有出浆口，所述锥形筛板的筛孔的孔径为0.15厘米～0.35厘米，所述离心式叶轮，由轮盘、均布于轮盘边沿的弧形叶片，所述弧形叶片与筒壁平行，所述筒体内壁设有斜板，所述离心式叶轮通过变速器与电机相连，所述筒体、变速器、电机设于支架上。
有益效果：本发明的废纸回收再利用进行造纸的工艺，浮渣利用率100％，可节约电能80％，减少纤维流失，直接降低企业成本8％，节约用水80％。
具体实施方式
下面结合具体实施例对本发明作进一步说明：
实施例1
一种废纸回收再利用进行造纸的工艺，包括如下步骤：
(1)废纸收购；
(2)废纸粉碎，采用D型水力碎浆机进行粉碎；
(3)高浓度除渣，包括：首先采用高浓度除渣装置进行除渣，然后经输送带送入杂质分离机，将废纸分离成粗纸浆、浮渣和沉渣，沉渣定期清理，浮渣由杂质分离机上方浮渣回收器回收后输送到指定的位置；
(4)粗筛：将分离后的粗纸浆由杂质分离机上方的筛孔溢出流到粗浆池，进行粗筛；
(5)精筛：将粗浆池内的纸浆进一步进行细筛；
(6)斜网浓缩：将精筛后的纸浆连接到斜筛进行水分离，分离后的水收集于斜筛下方的集水池后，集水池内的循环回用于杂质分离机，同时冲洗浮渣回收器上的纸浆；
(7)存浆池存浆；
(8)流浆箱流浆；
(9)成型网成型；
(10)压榨；
(11)烘干；
(12)施胶；
(13)卷取；
(14)复卷；
(15)包装；
(16)成品入库。
其中，所述杂质分离机包括筒体、设于筒体上部的环形筛板、设于筒体底部的离心式叶轮、驱动离心式叶轮的电机，所述环形筛板外侧设有环形收集槽，所述环形收集槽底部设有出浆口，所述环形筛板的筛孔的孔径为1厘米～1.5厘米，所述离心式叶轮，由轮盘、均布于轮盘边沿的弧形叶片、焊设于轮盘和弧形叶片上的凸块，所述弧形叶片与筒壁平行，所述筒体内壁设有斜板，所述离心式叶轮通过变速器与电机相连，所述筒体、变速器、电机设于支架上。
其中，所述斜网浓缩后通过高浓分解机进行纤维分解，所述的高浓分解机包括筒体、设于筒体底部的锥形筛板、设于筒体底部的离心式叶轮、驱动离心式叶轮的电机，所述锥形筛板下侧的密闭空间为细纸浆收集腔，所述细纸浆收集腔底部设有出浆口，所述锥形筛板的筛孔的孔径为0.15厘米～0.35厘米，所述离心式叶轮，由轮盘、均布于轮盘边沿的弧形叶片，所述弧形叶片与筒壁平行，所述筒体内壁设有斜板，所述离心式叶轮通过变速器与电机相连，所述筒体、变速器、电机设于支架上。
本发明的废纸回收再利用进行造纸的工艺，浮渣利用率100％，可节约电能80％，减少纤维流失，直接降低企业成本8％，节约用水80％。
以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (8)

  1. 一种废纸回收再利用进行造纸的工艺，其特征在于：包括如下步骤：
    (1)废纸收购；
    (2)废纸粉碎；
    (3)高浓度除渣；
    (4)粗筛；
    (5)精筛；
    (6)斜网浓缩；
    (7)存浆池存浆；
    (8)流浆箱流浆；
    (9)成型网成型；
    (10)压榨；
    (11)烘干；
    (12)施胶；
    (13)卷取；
    (14)复卷；
    (15)包装；
    (16)成品入库。
  2. 根据权利要求1所述的一种废纸回收再利用进行造纸的工艺，其特征在于：步骤(2)废纸粉碎采用D型水力碎浆机进行粉碎。
  3. 根据权利要求1所述的一种废纸回收再利用进行造纸的工艺，其特征在于：步骤(3)高浓度除渣具体包括：首先采用高浓度除渣装置进行除渣，然后经输送带送入杂质分离机，将废纸分离成粗纸浆、浮渣和沉渣，沉渣定期清理，浮渣由杂质分离机上方浮渣回收器回收后输送到指定的位置。
  4. 根据权利要求1所述的一种废纸回收再利用进行造纸的工艺，其特征在于：步骤(4)粗筛是将分离后的粗纸浆由杂质分离机上方的筛孔溢出流到粗浆池，进行粗筛。
  5. 根据权利要求1所述的一种废纸回收再利用进行造纸的工艺，其特征在于：步骤(5)精筛是将粗浆池内的纸浆进一步进行细筛。
  6. 根据权利要求1所述的一种废纸回收再利用进行造纸的工艺，其特征在于：步骤(6)斜网浓缩是将精筛后的纸浆连接到斜筛进行水分离，分离后的水收集于斜筛下方的集水池后，集水池内的循环回用于杂质分离机，同时冲洗浮渣回收器上的纸浆。
  7. 根据权利要求3所述的一种废纸回收再利用进行造纸的工艺，其特征在于：所述杂质 分离机包括筒体、设于筒体上部的环形筛板、设于筒体底部的离心式叶轮、驱动离心式叶轮的电机，所述环形筛板外侧设有环形收集槽，所述环形收集槽底部设有出浆口，所述环形筛板的筛孔的孔径为1厘米～1.5厘米，所述离心式叶轮，由轮盘、均布于轮盘边沿的弧形叶片、焊设于轮盘和弧形叶片上的凸块，所述弧形叶片与筒壁平行，所述筒体内壁设有斜板，所述离心式叶轮通过变速器与电机相连，所述筒体、变速器、电机设于支架上。
  8. 根据权利要求1所述的一种废纸回收再利用进行造纸的工艺，其特征在于：所述斜网浓缩后通过高浓分解机进行纤维分解，所述的高浓分解机包括筒体、设于筒体底部的锥形筛板、设于筒体底部的离心式叶轮、驱动离心式叶轮的电机，所述锥形筛板下侧的密闭空间为细纸浆收集腔，所述细纸浆收集腔底部设有出浆口，所述锥形筛板的筛孔的孔径为0.15厘米～0.35厘米，所述离心式叶轮，由轮盘、均布于轮盘边沿的弧形叶片，所述弧形叶片与筒壁平行，所述筒体内壁设有斜板，所述离心式叶轮通过变速器与电机相连，所述筒体、变速器、电机设于支架上。
PCT/CN2017/104356 2017-09-20 2017-09-29 一种废纸回收再利用进行造纸的工艺 WO2019056406A1 (zh)

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CN109403128B (zh) * 2018-10-17 2021-03-16 玖龙纸业（太仓）有限公司 一种使用土绒及废旧箱板纸制成混合造纸浆料的方法
CN111571860A (zh) * 2020-05-18 2020-08-25 宋晓莉 一种再生塑料回收预处理装置
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202081334U (zh) * 2011-01-20 2011-12-21 侯俊民 一种杂质分离机
CN202081333U (zh) * 2011-01-20 2011-12-21 侯俊民 一种高浓分解机
CN102605664A (zh) * 2011-01-20 2012-07-25 侯俊民 一种环保造纸工艺及设备
CN106555349A (zh) * 2015-09-30 2017-04-05 贵州富泰凯纸业有限公司 一种再生纸的制备装置及方法
CN106555356A (zh) * 2015-09-30 2017-04-05 贵州富泰凯纸业有限公司 一种再生纸的制备工艺

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202081334U (zh) * 2011-01-20 2011-12-21 侯俊民 一种杂质分离机
CN202081333U (zh) * 2011-01-20 2011-12-21 侯俊民 一种高浓分解机
CN102605664A (zh) * 2011-01-20 2012-07-25 侯俊民 一种环保造纸工艺及设备
CN106555349A (zh) * 2015-09-30 2017-04-05 贵州富泰凯纸业有限公司 一种再生纸的制备装置及方法
CN106555356A (zh) * 2015-09-30 2017-04-05 贵州富泰凯纸业有限公司 一种再生纸的制备工艺

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