WO2017063304A1 - Papermaking machine white water treatment process - Google Patents

Papermaking machine white water treatment process Download PDF

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Publication number
WO2017063304A1
WO2017063304A1 PCT/CN2016/000557 CN2016000557W WO2017063304A1 WO 2017063304 A1 WO2017063304 A1 WO 2017063304A1 CN 2016000557 W CN2016000557 W CN 2016000557W WO 2017063304 A1 WO2017063304 A1 WO 2017063304A1
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WO
WIPO (PCT)
Prior art keywords
water
paper machine
white water
treatment process
water treatment
Prior art date
Application number
PCT/CN2016/000557
Other languages
French (fr)
Chinese (zh)
Inventor
腾铁生
张跃平
Original Assignee
新疆国力源投资有限公司
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Filing date
Publication date
Application filed by 新疆国力源投资有限公司 filed Critical 新疆国力源投资有限公司
Publication of WO2017063304A1 publication Critical patent/WO2017063304A1/en

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Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/66Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/66Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/82Pulp catching, de-watering, or recovering; Re-use of pulp-water adding fibre agglomeration compositions

Definitions

  • the invention relates to a new process for white water treatment of a paper machine.
  • the technical problem to be solved by the present invention is to overcome the existing drawbacks, and to provide a new process for white water treatment of a paper machine which improves the pulp yield and ensures the closed cycle of the white water of the paper machine.
  • a paper machine white water treatment process the collected white water of the paper machine is filtered by flocculation and inorganic membrane to obtain clear water, and then the felt is washed with water.
  • the flocculating agent in the step 1) is an inorganic flocculating agent.
  • the flocculating agent is modified diatomaceous earth.
  • 1 kg of flocculating agent per 1 ton of water is purified.
  • the flocculant has a mesh number of 300-350 mesh.
  • the inorganic film in the step 3) is fired from diatomaceous earth and has a filtration pore size of 5-30 um.
  • the process of the invention is used to completely solve the problem of reuse of the white water of the paper machine, and the water collected after the flocculation improves the pulp yield and ensures the closed cycle of the white water of the paper machine.
  • the main advantages are as follows:
  • the floor space is small, the system can be built in the papermaking workshop, saving one-time investment.
  • a white water treatment process for a paper machine includes the following steps:
  • the flocculant is an inorganic flocculant (modified diatomaceous earth), the dosage is 0.1%, and the mesh number is 300-350 mesh. The floc is recovered and the water is recycled to the collection tank.

Abstract

Disclosed is a papermaking machine white water treatment process, wherein the collected papermaking machine white water is treated by flocculation and inorganic membrane filtration to obtain clean water; and then the clean water is used to clean coarse cotton cloth. The problem of the reuse of the papermaking machine white water is solved by the process, and a closed cycle of the papermaking machine white water is ensured.

Description

一种造纸机白水处理工艺Paper machine white water treatment process 技术领域Technical field
本发明涉及一种造纸机白水处理新工艺。The invention relates to a new process for white water treatment of a paper machine.
背景技术Background technique
众所周知,在造纸过程中用水能不能循环使用,能不能达到零排放的目标,很大程度上取决于造纸机白水能不能封闭循环。以往造纸厂的纸机白水,一部分造纸企业用多圆盘过滤后,少量水用于洗网等位置,不能清洗毛布,大量的水还是要回到中段水处理;大多数造纸企业的纸机白水直接进入中段水处理系统,既是一种浪费,又增加了水处理的运营费用。造纸机白水不能循环使用的主要原因是,简单处理后的水无法用于清洗毛布。It is well known that the use of water in the papermaking process can not be recycled, can achieve the goal of zero emissions, largely depends on whether the white water of the paper machine can be closed. In the past, paper mills used white water in paper mills. Some paper mills used multiple discs to filter, and a small amount of water was used for washing nets. The wool cloth could not be washed. A large amount of water still had to be returned to the middle water treatment; most paper mills used white water. Direct access to the mid-stage water treatment system is both a waste and an increase in operating costs for water treatment. The main reason why the paper machine white water cannot be recycled is that the simply treated water cannot be used to clean the felt.
发明内容Summary of the invention
本发明要解决的技术问题是克服现有的缺陷,提供了一种即提高了纸浆得率、又保证了纸机白水的封闭循环的造纸机白水处理新工艺。The technical problem to be solved by the present invention is to overcome the existing drawbacks, and to provide a new process for white water treatment of a paper machine which improves the pulp yield and ensures the closed cycle of the white water of the paper machine.
本发明的目的通过以下技术方案来具体实现:The object of the present invention is specifically achieved by the following technical solutions:
一种造纸机白水处理工艺,收集后的纸机白水经絮凝、无机膜过滤得到清水,再用清水清洗毛布。A paper machine white water treatment process, the collected white water of the paper machine is filtered by flocculation and inorganic membrane to obtain clear water, and then the felt is washed with water.
具体包括如下步骤:Specifically, the following steps are included:
1)收集后的纸机白水输送至絮凝沉淀系统进行2次絮凝,回收絮凝物,清水回收至收集池。1) After collecting, the white water of the paper machine is sent to the flocculation and sedimentation system for flocculation twice, the floc is recovered, and the clean water is recycled to the collection tank.
2)收集池中的水一部分直接用于清洗成型网、设备密封水系统;2) A part of the water in the collection tank is directly used for cleaning the forming network and the equipment sealing water system;
3)收集池中的另一部分水用无机膜过滤,过滤后的水储存于清水池中,用于清洗毛布的高、低压用水部位; 3) Another part of the water in the collection tank is filtered with an inorganic membrane, and the filtered water is stored in a clear water tank for cleaning the high and low pressure water parts of the felt;
4)收集的絮凝物输送至流送系统。4) The collected floes are delivered to the flow delivery system.
优选的,所述步骤1)中的絮凝剂为无机絮凝剂。Preferably, the flocculating agent in the step 1) is an inorganic flocculating agent.
进一步优选的,所述絮凝剂为改性硅藻土。由白山立伟硅藻土综合制品有限公司生产,产品名称:改性硅藻土净水剂。Further preferably, the flocculating agent is modified diatomaceous earth. Produced by Baishan Liwei Diatomite Integrated Products Co., Ltd., product name: modified diatomaceous earth water purifying agent.
优选的,每净化1吨水的用絮凝剂1kg。Preferably, 1 kg of flocculating agent per 1 ton of water is purified.
优选的,所述絮凝剂的目数为300-350目。目数越高,颗粒越小,絮凝剂的目数为300-350目时,回到流送系统对纸面无影响。Preferably, the flocculant has a mesh number of 300-350 mesh. The higher the mesh number, the smaller the particles, and the meshing agent has a mesh number of 300-350 mesh, and the flow back system has no effect on the paper surface.
所述步骤3)中的无机膜由硅藻土烧制而成,过滤孔径5-30um。The inorganic film in the step 3) is fired from diatomaceous earth and has a filtration pore size of 5-30 um.
本发明有益效果:The beneficial effects of the invention:
本发明工艺用以彻底解决纸机白水的回用问题,絮凝后收集的水,即提高了纸浆得率,又保证了纸机白水的封闭循环。与现有技术相比,主要的具有以下优点:The process of the invention is used to completely solve the problem of reuse of the white water of the paper machine, and the water collected after the flocculation improves the pulp yield and ensures the closed cycle of the white water of the paper machine. Compared with the prior art, the main advantages are as follows:
1、工艺流程短,不用回到中段水处理系统,节省运营费用。1. The process flow is short, and it is not necessary to return to the middle water treatment system to save operating expenses.
2、占地面积小,系统可以建在造纸车间,节省一次性投资。2, the floor space is small, the system can be built in the papermaking workshop, saving one-time investment.
3、达到了封闭循环,为造纸零排放指明了方向。3, reached a closed cycle, pointing out the direction for zero discharge of paper.
具体实施方式detailed description
以下对本发明的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本发明,并不用于限定本发明。The preferred embodiments of the present invention are described in the following, and the preferred embodiments described herein are intended to illustrate and explain the invention.
实施例1Example 1
一种造纸机白水处理工艺,包括如下步骤:A white water treatment process for a paper machine includes the following steps:
1)收集后的纸机白水输送至絮凝沉淀系统进行2次絮凝,絮凝剂是无机絮凝剂(改性硅藻土),用量0.1%,目数为300-350目。回收絮凝物,清水回收至收集池。 1) After collecting, the white water of the paper machine is sent to the flocculation and sedimentation system for 2 times flocculation. The flocculant is an inorganic flocculant (modified diatomaceous earth), the dosage is 0.1%, and the mesh number is 300-350 mesh. The floc is recovered and the water is recycled to the collection tank.
2)收集池中的水一部分直接用于清洗成型网,设备密封水等地方。因成型网为90目的聚酯网,用2次絮凝的水清洗不存在任何问题。2) A part of the water in the collection tank is directly used to clean the forming wire, and the equipment seals water and the like. Since the forming mesh was a 90-mesh polyester mesh, there was no problem in cleaning with 2 times of flocculation.
3)收集池中的另一部分水用无机膜过滤(改性硅藻土烧制),过滤后的水储存于清水池中用于清洗毛布的高、低压用水。3) Another part of the water in the collection tank is filtered with an inorganic membrane (modified diatomaceous earth fired), and the filtered water is stored in a clean water tank for cleaning the high and low pressure water of the felt.
4)收集的絮凝物输送至流送系统,即提高了纸浆得率,又保证了纸机白水的封闭循环。4) The collected floc is transported to the flow delivery system, which increases the pulp yield and ensures the closed cycle of the white water of the paper machine.
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still The technical solutions described are modified, or some of the technical features are equivalently replaced. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims (7)

  1. 一种造纸机白水处理工艺,其特征在于:收集后的纸机白水经絮凝、无机膜过滤得到清水,再用清水清洗毛布。The utility model relates to a white water treatment process for a paper machine, which is characterized in that: the collected white water of the paper machine is filtered by flocculation and inorganic membrane to obtain clean water, and then the felt is washed with water.
  2. 根据权利要求1所述的造纸机白水处理工艺,其特征在于:包括如下步骤:The paper machine white water treatment process according to claim 1, comprising the steps of:
    1)收集后的纸机白水输送至絮凝沉淀系统进行2次絮凝,回收絮凝物,清水回收至收集池。1) After collecting, the white water of the paper machine is sent to the flocculation and sedimentation system for flocculation twice, the floc is recovered, and the clean water is recycled to the collection tank.
    2)收集池中的水一部分直接用于清洗成型网、设备密封水系统;2) A part of the water in the collection tank is directly used for cleaning the forming network and the equipment sealing water system;
    3)收集池中的另一部分水用无机膜过滤,过滤后的水储存于清水池中,用于清洗毛布的高、低压用水部位;3) Another part of the water in the collection tank is filtered with an inorganic membrane, and the filtered water is stored in a clear water tank for cleaning the high and low pressure water parts of the felt;
    4)收集的絮凝物输送至流送系统。4) The collected floes are delivered to the flow delivery system.
  3. 根据权利要求2所述的造纸机白水处理工艺,其特征在于:所述步骤1)中的絮凝剂为无机絮凝剂。The paper machine white water treatment process according to claim 2, wherein the flocculating agent in the step 1) is an inorganic flocculant.
  4. 根据权利要求3所述的造纸机白水处理工艺,其特征在于:所述絮凝剂为改性硅藻土。The white water treatment process for a paper machine according to claim 3, wherein the flocculating agent is modified diatomaceous earth.
  5. 根据权利要求3或4所述的造纸机白水处理工艺,其特征在于:所述每净化1吨水的用絮凝剂1kg。The paper machine white water treatment process according to claim 3 or 4, characterized in that the flocculating agent for purifying 1 ton of water is 1 kg.
  6. 根据权利要求3或4所述的造纸机白水处理工艺,其特征在于:所述絮凝剂的目数为300-350目。A white water treatment process for a paper machine according to claim 3 or 4, wherein the flocculant has a mesh number of 300 to 350 mesh.
  7. 根据权利要求2所述的造纸机白水处理工艺,其特征在于:所述步骤3)中的无机膜由硅藻土烧制而成,过滤孔径5-30um。 The paper machine white water treatment process according to claim 2, wherein the inorganic film in the step 3) is fired from diatomaceous earth and has a filtration pore size of 5-30 um.
PCT/CN2016/000557 2015-10-13 2016-10-10 Papermaking machine white water treatment process WO2017063304A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510669073.4A CN105369666A (en) 2015-10-13 2015-10-13 White water processing technology of papermaking machine
CN201510669073.4 2015-10-13

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WO2017063304A1 true WO2017063304A1 (en) 2017-04-20

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105369666A (en) * 2015-10-13 2016-03-02 新疆国力源投资有限公司 White water processing technology of papermaking machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1882774A1 (en) * 2006-07-24 2008-01-30 Siemens Aktiengesellschaft Machine for manufacturing paper, in particular recycled paper
US20090255876A1 (en) * 2008-04-11 2009-10-15 Dunbar James M Feedback control scheme for optimizing dewatering processes
CN103663776A (en) * 2013-09-23 2014-03-26 浙江凯丰纸业有限公司 Papermaking white water circulating treatment method and treatment device
CN203513392U (en) * 2013-09-23 2014-04-02 浙江凯丰纸业有限公司 Circular treatment device of papermaking white water
CN103922505A (en) * 2014-04-14 2014-07-16 浙江理工大学 Method for deep treatment on tea bag filter paper making bleach by using nanofiltration membrane
CN105369666A (en) * 2015-10-13 2016-03-02 新疆国力源投资有限公司 White water processing technology of papermaking machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100365203C (en) * 2005-06-09 2008-01-30 西安交通大学 Process for realizing waste-water zero-discharge of papermaking from waste paper by anaerobic-aerobic treatment
CN102351339A (en) * 2011-06-30 2012-02-15 德州泰鼎新材料科技有限公司 Method for improving decorative base paper white water recovery rate and recovery system
US8986503B2 (en) * 2013-03-13 2015-03-24 Kadant Inc. Whitewater recovery process
CN204282117U (en) * 2014-10-31 2015-04-22 东莞理文造纸厂有限公司 A kind of mthod of white water from paper making recovery system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1882774A1 (en) * 2006-07-24 2008-01-30 Siemens Aktiengesellschaft Machine for manufacturing paper, in particular recycled paper
US20090255876A1 (en) * 2008-04-11 2009-10-15 Dunbar James M Feedback control scheme for optimizing dewatering processes
CN103663776A (en) * 2013-09-23 2014-03-26 浙江凯丰纸业有限公司 Papermaking white water circulating treatment method and treatment device
CN203513392U (en) * 2013-09-23 2014-04-02 浙江凯丰纸业有限公司 Circular treatment device of papermaking white water
CN103922505A (en) * 2014-04-14 2014-07-16 浙江理工大学 Method for deep treatment on tea bag filter paper making bleach by using nanofiltration membrane
CN105369666A (en) * 2015-10-13 2016-03-02 新疆国力源投资有限公司 White water processing technology of papermaking machine

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