CN105133409A - Waste paper deinking method - Google Patents
Waste paper deinking method Download PDFInfo
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- CN105133409A CN105133409A CN201510494971.0A CN201510494971A CN105133409A CN 105133409 A CN105133409 A CN 105133409A CN 201510494971 A CN201510494971 A CN 201510494971A CN 105133409 A CN105133409 A CN 105133409A
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- waste paper
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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
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Abstract
The present invention discloses a waste paper deinking method, which comprises primary washing, enzyme treatment, adsorption and floatation. According to the present invention, the waste paper deinking method can be used for the deinking treatments of waste corrugated paper, waste newspaper, color offset printing newspaper, waste books and magazine paper, waste office paper, and laser and electrostatic copying paper; the used deinking agent is biological enzymes and zeolite; the pH value of the whole treatment process is neutral, the additional additive is not required to be added to adjust the pH value so as to reduce the cost and improve the quality of the waste paper pulp; the zeolite adsorbs ink in the sewage, the produced sewage is less, and the recycling can be performed after the simple treatment, such that the resources are saved, the cost is reduced, and the environment is protected; the nonwoven fabric is produced from waste paper fibers, the zeolite can be recycled after being regenerated, and the price is cheap, such that the cost is saved; and after the waste paper is deinked, the fiber loss is less, the brightness is high, the dust is small, and the reuse property is good.
Description
Technical field
The present invention relates generally to a kind of deinking process for waste paper, belongs to pulp technology for making paper.
Background technology
Packaging has two large functions: one is that protection commodity do not damage, never degenerate in manufacture, transport, storage, sales process; Two is play decoration to commodity, beautify, publicize and value-added effect, has also beautified the life of people, has met the material and cultural needs that consumers in general are growing, promoted and pulled consumption.Wrapping paper, as a kind of important packaging material, has been widely used in the packing of product of every profession and trade, and it contains boxboard and fluting medium, white board and art post paperboard, soft package of beverage paper, special packing paper etc.
China's Forest Resources lacks, wood pulp depends on import, waste paper reaches more than 70% in China's paper making raw material, while waste paper is recycled, the contaminated wastewater produced in waste paper pulp-making process and waste water handling problem more and more outstanding, particularly Deinking Pulp waste water, this is relevant with production technology with Deinking Pulp character.Usually, generally add NaOH in deinking office waste paper process, require that pH value reaches more than 10, under high alkalinity environment, ink is easily separated with fiber, but quite unfavorable to equipment, operating environment, stock quality, subsequent wastewater treatment etc.
Summary of the invention
In order to make up the defect of prior art, the object of this invention is to provide a kind of deinking process for waste paper.
A kind of deinking process for waste paper, comprises the following steps:
(1) waste paper is put into collection frame, collection frame is put into kitchen sink, collection frame vertical tremor is tentatively cleaned;
(2) by tentatively cleaning after waste paper carry out vacuum stirring pulverizing, the mass concentration of secondary stock is 20% ~ 25%, in crushing process, add lipase, and temperature is 36 ~ 39 DEG C, and addition is 0.03% ~ 0.05% of waste paper oven dry weight;
(3) waste paper after pulverizing is carried out gradient centrifugation, further removing waste paper by impurity;
(4) secondary stock after centrifugal is loaded non-woven bag, add water, frequency is 45 ~ 50KHz, carry out Ultrasonic Pulverization 25 ~ 30 minutes, add pectase, amylase and zytase, temperature is 45 ~ 55 DEG C, and the receiving volume of non-woven bag is not less than the receiving volume of ultrasonic machine;
(5) in the secondary stock after ultrasonic, active zeolite is added, adsorption treatment 1 ~ 2 hour;
(6) after adsorption treatment, add the laccase of 0.01% ~ 0.02% of waste paper oven dry weight, temperature is 37 ~ 39 DEG C, abundant vacuum stirring 10 ~ 15 minutes;
(7) secondary stock after laccase treatment is carried out flotation.
It is be the stainless steel screen frame of 1 ~ 2mm aperture with aperture that described step 1) collects frame.
Described step 2) addition of lipase is 0.03% ~ 0.05% of waste paper oven dry weight.
The interpolation part by weight of described step 4) pectase, amylase and zytase is 1:2:1.
The thickness of described step 4) nonwoven fabric is 0.8 ~ 1mm, and aperture is 60 ~ 80 μm.
The density of described step 5) active zeolite is 1.8 ~ 2.1g/cm
3, particle diameter is 0.8 ~ 1.5cm.
Advantage of the present invention is: a kind of deinking process for waste paper provided by the invention, go for useless corrugated paper, crushed news, color offset newsprint, waste and old books and periodicals magazine paper, wastepaper, the deinking process of laser and electro-photographic paper, the deinking agent used is biology enzyme and zeolite, the pH value of whole processing procedure is neutral, other additive is not needed to regulate pH value, cost-saving, improve the quality of secondary stock, ink in zeolite adsorption sewage, the sewage produced is few, and can recycle after simple process, economize on resources, reduce costs, protection of the environment, nonwoven fabric is made by waste paper fibre, and zeolite can recycle after regeneration, and low price is cost-saving, waste paper is after deinking, and fiber loss is few, and whiteness is high, and dirt count is little, and reusing is good.
Detailed description of the invention
With specific embodiment, the present invention is described below.
Embodiment 1
A kind of deinking process for waste paper, comprises the following steps:
(1) waste paper is put into collection frame, collection frame is put into kitchen sink, collection frame vertical tremor is tentatively cleaned;
(2) by tentatively cleaning after waste paper carry out vacuum stirring pulverizing, the mass concentration of secondary stock is 20%, in crushing process, add lipase, and temperature is 36 DEG C, and addition is 0.03% of waste paper oven dry weight;
(3) waste paper after pulverizing is carried out gradient centrifugation, further removing waste paper by impurity;
(4) secondary stock after centrifugal is loaded non-woven bag, the thickness of nonwoven fabric is 0.8mm, aperture is 60 μm, add water, frequency is 45KHz, carries out Ultrasonic Pulverization 25 minutes, add pectase, amylase and zytase, interpolation part by weight is 1:2:1, and temperature is 45 DEG C, and the receiving volume of non-woven bag is not less than the receiving volume of ultrasonic machine;
(5) in the secondary stock after ultrasonic, add active zeolite, the density of active zeolite is 1.8g/cm
3, particle diameter is 0.8 ~ 1.5cm, adsorption treatment 1 hour;
(6) after adsorption treatment, add the laccase of 0.01% of waste paper oven dry weight, temperature is 37 DEG C, abundant vacuum stirring 10 minutes;
(7) secondary stock after laccase treatment is carried out flotation.
Embodiment 2
A kind of deinking process for waste paper, comprises the following steps:
(1) waste paper is put into collection frame, collection frame is put into kitchen sink, collection frame vertical tremor is tentatively cleaned;
(2) by tentatively cleaning after waste paper carry out vacuum stirring pulverizing, the mass concentration of secondary stock is 23%, in crushing process, add lipase, and temperature is 37 DEG C, and addition is 0.04% of waste paper oven dry weight;
(3) waste paper after pulverizing is carried out gradient centrifugation, further removing waste paper by impurity;
(4) secondary stock after centrifugal is loaded non-woven bag, the thickness of nonwoven fabric is 0.9mm, aperture is 70 μm, add water, frequency is 48KHz, carries out Ultrasonic Pulverization 28 minutes, add pectase, amylase and zytase, interpolation part by weight is 1:2:1, and temperature is 50 DEG C, and the receiving volume of non-woven bag is not less than the receiving volume of ultrasonic machine;
(5) in the secondary stock after ultrasonic, add active zeolite, the density of active zeolite is 1.9g/cm
3, particle diameter is 0.8 ~ 1.5cm, adsorption treatment 1.5 hours;
(6) after adsorption treatment, add the laccase of 0.015% of waste paper oven dry weight, temperature is 38 DEG C, abundant vacuum stirring 13 minutes;
(7) secondary stock after laccase treatment is carried out flotation.
Embodiment 3
A kind of deinking process for waste paper, comprises the following steps:
(1) waste paper is put into collection frame, collection frame is put into kitchen sink, collection frame vertical tremor is tentatively cleaned;
(2) by tentatively cleaning after waste paper carry out vacuum stirring pulverizing, the mass concentration of secondary stock is 25%, in crushing process, add lipase, and temperature is 39 DEG C, and addition is 0.05% of waste paper oven dry weight;
(3) waste paper after pulverizing is carried out gradient centrifugation, further removing waste paper by impurity;
(4) secondary stock after centrifugal is loaded non-woven bag, the thickness of nonwoven fabric is 1mm, aperture is 80 μm, add water, frequency is 50KHz, carries out Ultrasonic Pulverization 30 minutes, add pectase, amylase and zytase, interpolation part by weight is 1:2:1, and temperature is 55 DEG C, and the receiving volume of non-woven bag is not less than the receiving volume of ultrasonic machine;
(5) in the secondary stock after ultrasonic, add active zeolite, the density of active zeolite is 2.1g/cm
3, particle diameter is 0.8 ~ 1.5cm, adsorption treatment 2 hours;
(6) after adsorption treatment, add the laccase of 0.02% of waste paper oven dry weight, temperature is 39 DEG C, abundant vacuum stirring 15 minutes;
(7) secondary stock after laccase treatment is carried out flotation.
Pulp from decoloured waste paper of the present invention and common pulp from decoloured waste paper are contrasted, the results are shown in Table 1.
Table 1: pulp from decoloured waste paper of the present invention and usual pulp from decoloured waste paper contrast
| Project | Yield/% | Whiteness/% (ISO) | Dirt count/ppm |
| Embodiment 1 | 82 | 71 | 124 |
| Embodiment 2 | 81 | 72 | 125 |
| Embodiment 3 | 79 | 73 | 127 |
| Usually | 63 | 55 | 277 |
Show from the result of table 1, deinking process for waste paper provided by the invention, pulp yield is high, and whiteness is high, and dirt count is little, in deinking process, does not separately add the adjustment that material carries out pH value, cost-saving, protection of the environment.
Claims (6)
1. a deinking process for waste paper, is characterized in that, comprises the following steps:
(1) waste paper is put into collection frame, collection frame is put into kitchen sink, collection frame vertical tremor is tentatively cleaned;
(2) by tentatively cleaning after waste paper carry out vacuum stirring pulverizing, the mass concentration of secondary stock is 20% ~ 25%, in crushing process, add lipase, and temperature is 36 ~ 39 DEG C, and addition is 0.03% ~ 0.05% of waste paper oven dry weight;
(3) waste paper after pulverizing is carried out gradient centrifugation, further removing waste paper by impurity;
(4) secondary stock after centrifugal is loaded non-woven bag, add water, frequency is 45 ~ 50KHz, carry out Ultrasonic Pulverization 25 ~ 30 minutes, add pectase, amylase and zytase, temperature is 45 ~ 55 DEG C, and the receiving volume of non-woven bag is not less than the receiving volume of ultrasonic machine;
(5) in the secondary stock after ultrasonic, active zeolite is added, adsorption treatment 1 ~ 2 hour;
(6) after adsorption treatment, add the laccase of 0.01% ~ 0.02% of waste paper oven dry weight, temperature is 37 ~ 39 DEG C, abundant vacuum stirring 10 ~ 15 minutes;
(7) secondary stock after laccase treatment is carried out flotation.
2. a kind of deinking process for waste paper as claimed in claim 1, is characterized in that, it is be the stainless steel screen frame of 1 ~ 2mm aperture with aperture that described step 1) collects frame.
3. a kind of deinking process for waste paper as claimed in claim 1, is characterized in that, described step 2) addition of lipase is 0.03% ~ 0.05% of waste paper oven dry weight.
4. a kind of deinking process for waste paper as claimed in claim 1, is characterized in that, the interpolation part by weight of described step 4) pectase, amylase and zytase is 1:2:1.
5. a kind of deinking process for waste paper as claimed in claim 1, is characterized in that, the thickness of described step 4) nonwoven fabric is 0.8 ~ 1mm, and aperture is 60 ~ 80 μm.
6. a kind of deinking process for waste paper as claimed in claim 1, is characterized in that, the density of described step 5) active zeolite is 1.8 ~ 2.1g/cm
3, particle diameter is 0.8 ~ 1.5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510494971.0A CN105133409A (en) | 2015-08-13 | 2015-08-13 | Waste paper deinking method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510494971.0A CN105133409A (en) | 2015-08-13 | 2015-08-13 | Waste paper deinking method |
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| CN105133409A true CN105133409A (en) | 2015-12-09 |
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| CN201510494971.0A Pending CN105133409A (en) | 2015-08-13 | 2015-08-13 | Waste paper deinking method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418527A (en) * | 2008-12-11 | 2009-04-29 | 中冶纸业银河有限公司 | Deinking process for waste paper |
| CN101691699A (en) * | 2009-09-25 | 2010-04-07 | 南京川平科技开发有限公司 | Deinking method of waste paper alkaline enzyme |
| CN103088688A (en) * | 2011-11-02 | 2013-05-08 | 东莞市绿微康生物科技有限公司 | Clean wastepaper deinking production method |
| CN103696311A (en) * | 2013-12-26 | 2014-04-02 | 河南理工大学 | Office waste paper recycling method |
| CN104213450A (en) * | 2014-09-18 | 2014-12-17 | 苏州新协力环保科技有限公司 | Deinking treatment method of mixed office waste paper |
| CN104213449A (en) * | 2013-05-30 | 2014-12-17 | 宁夏新航能源环境科技有限公司 | Paper regeneration method by wastepaper deinking |
| US20150053358A1 (en) * | 2013-08-20 | 2015-02-26 | Buckman Laboratories International, Inc. | Methods To Control Organic Contaminants In Fibers Using Zeolites |
-
2015
- 2015-08-13 CN CN201510494971.0A patent/CN105133409A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418527A (en) * | 2008-12-11 | 2009-04-29 | 中冶纸业银河有限公司 | Deinking process for waste paper |
| CN101691699A (en) * | 2009-09-25 | 2010-04-07 | 南京川平科技开发有限公司 | Deinking method of waste paper alkaline enzyme |
| CN103088688A (en) * | 2011-11-02 | 2013-05-08 | 东莞市绿微康生物科技有限公司 | Clean wastepaper deinking production method |
| CN104213449A (en) * | 2013-05-30 | 2014-12-17 | 宁夏新航能源环境科技有限公司 | Paper regeneration method by wastepaper deinking |
| US20150053358A1 (en) * | 2013-08-20 | 2015-02-26 | Buckman Laboratories International, Inc. | Methods To Control Organic Contaminants In Fibers Using Zeolites |
| CN103696311A (en) * | 2013-12-26 | 2014-04-02 | 河南理工大学 | Office waste paper recycling method |
| CN104213450A (en) * | 2014-09-18 | 2014-12-17 | 苏州新协力环保科技有限公司 | Deinking treatment method of mixed office waste paper |
Non-Patent Citations (3)
| Title |
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| 劳嘉葆: ""沸石微粒用于浮选脱墨"", 《造纸化学品》 * |
| 林鹿等: "《制浆漂白生物技术与原理 第二版》", 31 January 2012, 中国轻工业出版社 * |
| 陈劲柏: ""对酶法与物理法联合脱墨的探究"", 《国际造纸》 * |
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Application publication date: 20151209 |