CN111321620B - Waste paper pulp deinking stabilizer and preparation method thereof - Google Patents
Waste paper pulp deinking stabilizer and preparation method thereof Download PDFInfo
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- CN111321620B CN111321620B CN202010294159.4A CN202010294159A CN111321620B CN 111321620 B CN111321620 B CN 111321620B CN 202010294159 A CN202010294159 A CN 202010294159A CN 111321620 B CN111321620 B CN 111321620B
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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
- D21C5/025—De-inking
- D21C5/027—Chemicals therefor
-
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/10—Phosphorus-containing compounds
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
The invention belongs to the technical field of waste paper treatment and recycling, and particularly relates to a waste paper pulp deinking stabilizer and a preparation method thereof. The waste paper pulp deinking stabilizer comprises the following components: 2-aminoethanol-1-phosphoric acid, magnesium salt, ammonium polyacrylate and water. The deinking stabilizer can effectively shield transition metal ions, has a good deinking stability effect, is simple in preparation method, and is easy to industrially popularize and implement.
Description
Technical Field
The invention belongs to the technical field of waste paper treatment and recycling, and particularly relates to a waste paper pulp deinking stabilizer and a preparation method thereof.
Background
The continuous and stable growth of the papermaking industry drives the development of upstream industries such as forestry, chemical engineering, mechanical manufacturing, energy and power, logistics and the like, and simultaneously promotes the development of downstream industries such as product packaging, medical treatment and health, printing and publishing, cultural transmission, business office and the like. However, the paper industry is increasingly subject to resource, energy and environmental constraints, and the recycling, low-carbon and green economy have become the subject of new development. Currently, paper mills around the world have begun to shift from traditional pulp papermaking to the integrated green industry of biomass refining. Therefore, domestic pulping and papermaking enterprises should refer to new technologies at home and abroad to convert domestic advanced scientific achievements, and adopt advanced green bleaching technologies such as biological bleaching, oxygen bleaching, ozone bleaching and the like in the bleaching process, so as to radically avoid environmental pollution and realize clean production of pulping and papermaking. During the bleaching of paper pulp, a large amount of middle water which is difficult to biodegrade and contains lignin, cellulose, resinate and the like is generated, and carcinogens and teratogens such as absorbable organic halide, dioxin and the like are contained in bleaching waste water, so that the environment is seriously polluted. Therefore, green and environment-friendly pulp bleaching technology is increasingly gaining attention.
The deinking agent can separate waste paper fiber from ink, and the deinking agent has the main function of destroying the adhesion of the ink to the paper fiber to strip the ink from the fiber and disperse the ink in water. The deinking agent generally has a plurality of functions of wetting, penetrating, swelling resin, emulsifying, dispersing and the like. The deinking agent has the following functions: firstly, directly decomposing ink, paint and pigment on the waste paper to achieve the deinking effect; and secondly, removing resin in the paper pulp. However, the existing deinking agent in the market cannot meet the requirements of people, has great damage to fibers, and may cause certain pollution and damage to water resources.
In the traditional deinking and bleaching technology, hydrogen peroxide is generally added in the bleaching section, and sodium silicate is also added. Na (Na)2SiO3Sodium silicate is commonly used with hydrogen peroxide because it deactivates the metal ions and it also acts as a buffer, and bleaching with hydrogen oxide can be carried out at a more desirable pH. Sodium silicate is actually a complex anionic mixture of a variety of polymeric silicates. Substances which are believed to form a gel-like structure with heavy metal ions; sodium silicate is also a wetting agent which lowers the surface tension of the liquid and acts as a dispersant to prevent re-settling of the ink particles on the fibers. During flotation, the sodium silicate promotes the ink particles to grow until they are adsorbed onto the surface of the soap-like froth, thereby promoting the removal of the ink particles from the flotation. Sodium silicate also improves the post bleaching effect of hydrogen peroxide.
The calcium content in the waste paper pulp is greatly increased due to a large amount of calcium carbonate, and the calcium ion content is further increased by reusing the white water in the processes of waste paper pulping, pulp washing and the like, so that the calcium silicate scaling problem is easily caused by the use of the sodium silicate stabilizer during the bleaching of the waste paper pulp, the normal operation of a bleaching system is influenced, and anionic garbage is brought, the wet end chemistry of a paper machine is influenced, and paper diseases such as dust are caused.
Therefore, the research on a new technology which can effectively improve the deinking and bleaching effects and reduce the trouble of calcium silicon to the system has important research significance.
Disclosure of Invention
In order to overcome the technical problems, the invention provides a deinking stabilizer for waste paper pulp, which has better deinking stabilizing effect, simple preparation method and easy industrial popularization and implementation.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
a waste paper pulp deinking stabilizer comprises the following components:
2-aminoethanol-1-phosphoric acid, magnesium salt, ammonium polyacrylate (PAA-NH)4) Water;
preferably, the waste paper pulp deinking stabilizer comprises the following components in parts by weight:
0.01-0.5 part of 2-aminoethanol-1-phosphoric acid, 0.01-1 part of magnesium salt, 0.01-5 parts of ammonium polyacrylate and 90-120 parts of water;
preferably, the waste paper pulp deinking stabilizer comprises the following components in parts by weight:
0.02-0.2 part of 2-aminoethanol-1-phosphoric acid, 0.01-0.5 part of magnesium salt, 0.01-3 parts of ammonium polyacrylate and 93-98 parts of water;
preferably, the magnesium salt is selected from one or more of magnesium chloride, magnesium iodide, magnesium sulfate or/and magnesium nitrate;
preferably, the magnesium salt is a mixture of magnesium chloride and magnesium nitrate;
preferably, the mass ratio of the magnesium chloride to the magnesium nitrate is 1-3: 1;
preferably, the molecular weight M of the ammonium polyacrylate is 50-400 ten thousand;
another object of the present invention is to provide a method for preparing the deinking stabilizer for waste paper pulp, comprising the following steps:
(1) mixing 2-aminoethanol-1-phosphoric acid, ammonium polyacrylate and water, heating and stirring to obtain a solution 1;
(2) dissolving magnesium salt into water to obtain a magnesium salt solution;
(3) and mixing the magnesium salt solution with the solution 1 to prepare the waste paper pulp deinking stabilizer.
Preferably, in the step (1), the heating temperature is 50-80 ℃;
preferably, in the step (1), the rotation speed of the stirring is 200-500 rpm;
preferably, in the step (1), the mass of the water is more than that required by the solubility of the 2-aminoethanol-1-phosphoric acid and the ammonium polyacrylate, so as to ensure uniform dissolution;
preferably, in the step (1), the mass ratio of the 2-aminoethanol-1-phosphoric acid to the ammonium polyacrylate to the water is as follows: (0.01-0.5): (0.01-7): (60-80);
preferably, in the step (3), the total mass fraction of the effective components of the 2-aminoethanol-1-phosphoric acid, the ammonium polyacrylate and the water in the waste paper pulp deinking stabilizer is not more than 5%.
Compared with the prior art, the invention has the technical advantages that:
(1) the waste paper pulp deinking stabilizer provided by the invention can effectively shield transition metal ions and has a better deinking stability effect.
(2) The waste paper pulp deinking stabilizer provided by the invention does not contain silicate, and cannot cause troubles of system calcium silicon.
(3) The waste paper pulp deinking stabilizer provided by the invention has better alkali resistance, and the chelation effect is still not influenced when the pH value reaches 8-12; the damage to the fiber can be effectively reduced; when the PH is 9, adding the same amount of hydrogen peroxide and caustic soda, and adding 2 kg of the stabilizer of the invention can improve the whiteness by 0.6 point compared with adding 20 kg of sodium silicate and 1kg of EDTA;
(4) traditionally, 15-25kg of sodium silicate and about 1kg of EDTA (chelating agent) or DTPA (chelating agent) are added to 1 ton of paper; after the stabilizer is used, the effect of the stabilizer can be achieved by adding about 2-4kg of the stabilizer;
(5) the waste paper pulp deinking stabilizer provided by the invention is mainly applied to the oxygen bleaching process, and the stabilizer has the functions of shielding transition metal ions and preventing continuous decomposition of hydrogen peroxide; has better temperature resistance, and can still keep stable effect after being heated and dispersed.
(6) The total mass fraction of the three effective components in the waste paper pulp deinking stabilizer provided by the invention is not more than 5%, which is beneficial to the uniform reaction with fiber; has stable deinking effect.
Detailed Description
The present invention will be described below with reference to specific examples to make the technical aspects of the present invention easier to understand and grasp, but the present invention is not limited thereto. The experimental methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials are commercially available, unless otherwise specified.
Example 1
A waste paper pulp deinking stabilizer comprises the following components: the waste paper pulp deinking stabilizer comprises the following components in parts by weight: 0.02 part of 2-aminoethanol-1-phosphoric acid, 0.05 part of magnesium salt, 3 parts of ammonium polyacrylate and 98 parts of water;
wherein the 98 parts of water are divided into two parts, one part is 70 parts, and the other part is 28 parts;
the magnesium salt is a mixture of magnesium chloride and magnesium nitrate; the mass ratio of the magnesium chloride to the magnesium nitrate is 2: 1;
the ammonium polyacrylate M is 200 ten thousand;
the preparation method of the deinking stabilizer for waste paper pulp comprises the following preparation steps:
(1) mixing 2-aminoethanol-1-phosphoric acid, ammonium polyacrylate and 70 parts of water, heating to 60 ℃, and stirring at 300rpm to obtain a solution 1;
(2) dissolving magnesium salt into the remaining 28 parts of water to obtain a magnesium salt solution;
(3) and mixing the magnesium salt solution with the solution 1 to prepare the waste paper pulp deinking stabilizer.
Example 2
A waste paper pulp deinking stabilizer comprises the following components: the waste paper pulp deinking stabilizer comprises the following components in parts by weight: 0.2 part of 2-aminoethanol-1-phosphoric acid, 0.01 part of magnesium salt, 0.01 part of ammonium polyacrylate and 90 parts of water;
wherein the 90 parts of water are divided into two parts, one part is 60 parts, and the other part is 30 parts;
the magnesium salt is a mixture of magnesium chloride and magnesium nitrate; the mass ratio of the magnesium chloride to the magnesium nitrate is 1: 1;
the ammonium polyacrylate M is 50 ten thousand;
the preparation method of the deinking stabilizer for waste paper pulp comprises the following preparation steps:
(1) mixing 2-aminoethanol-1-phosphoric acid, ammonium polyacrylate and 60 parts of water, heating to 50 ℃, and stirring at 500rpm to obtain a solution 1;
(2) dissolving magnesium salt into the remaining 30 parts of water to obtain a magnesium salt solution;
(3) and mixing the magnesium salt solution with the solution 1 to prepare the waste paper pulp deinking stabilizer.
Example 3
A waste paper pulp deinking stabilizer comprises the following components: the waste paper pulp deinking stabilizer comprises the following components in parts by weight: 0.5 part of 2-aminoethanol-1-phosphoric acid, 1 part of magnesium salt, 5 parts of ammonium polyacrylate and 120 parts of water;
wherein 120 parts of water is divided into two parts, one part is 80 parts, and the other part is 40 parts;
the magnesium salt is a mixture of magnesium chloride and magnesium nitrate; the mass ratio of the magnesium chloride to the magnesium nitrate is 3: 1;
the ammonium polyacrylate, M is 400 ten thousand;
the preparation method of the deinking stabilizer for waste paper pulp comprises the following preparation steps:
(1) mixing 2-aminoethanol-1-phosphoric acid, ammonium polyacrylate and 80 parts of water, heating to 80 ℃, and stirring at 200rpm to obtain a solution 1;
(2) dissolving magnesium salt into the remaining 40 parts of water to obtain a magnesium salt solution;
(3) and mixing the magnesium salt solution with the solution 1 to prepare the waste paper pulp deinking stabilizer.
Example 4
A waste paper pulp deinking stabilizer comprises the following components: the waste paper pulp deinking stabilizer comprises the following components in parts by weight: 0.01 part of 2-aminoethanol-1-phosphoric acid, 0.5 part of magnesium salt, 4 parts of ammonium polyacrylate and 93 parts of water;
wherein the 93 parts of water are divided into two parts, one part is 60 parts, and the other part is 33 parts;
the magnesium salt is magnesium chloride; the ammonium polyacrylate M is 100 ten thousand;
the preparation method of the deinking stabilizer for waste paper pulp comprises the following preparation steps:
(1) mixing 2-aminoethanol-1-phosphoric acid, ammonium polyacrylate and 60 parts of water, heating to 50 ℃, and stirring at 300rpm to obtain a solution 1;
(2) dissolving magnesium salt into the rest 33 parts of water to obtain a magnesium salt solution;
(3) and mixing the magnesium salt solution with the solution 1 to prepare the waste paper pulp deinking stabilizer.
Comparative example 1
The only difference compared to example 1 is the replacement of ammonium polyacrylate with sodium polyacrylate.
A waste paper pulp deinking stabilizer comprises the following components: the waste paper pulp deinking stabilizer comprises the following components in parts by weight: 0.02 part of 2-aminoethanol-1-phosphoric acid, 0.05 part of magnesium salt, 3 parts of sodium polyacrylate and 98 parts of water;
wherein the 98 parts of water are divided into two parts, one part is 70 parts, and the other part is 28 parts;
the magnesium salt is a mixture of magnesium chloride and magnesium nitrate; the mass ratio of the magnesium chloride to the magnesium nitrate is 2: 1;
the sodium polyacrylate M is 200 ten thousand;
the preparation method of the deinking stabilizer for waste paper pulp comprises the following preparation steps:
(1) mixing 2-aminoethanol-1-phosphoric acid, sodium polyacrylate and 70 parts of water, heating to 60 ℃, and stirring at 300rpm to obtain a solution 1;
(2) dissolving magnesium salt into the remaining 28 parts of water to obtain a magnesium salt solution;
(3) and mixing the magnesium salt solution with the solution 1 to prepare the waste paper pulp deinking stabilizer.
Comparative example 2
The only difference compared to example 1 is the replacement of 2-aminoethanol-1-phosphoric acid by 2-aminoethanol.
A waste paper pulp deinking stabilizer comprises the following components: the waste paper pulp deinking stabilizer comprises the following components in parts by weight: 0.02 part of 2-aminoethanol, 0.05 part of magnesium salt, 3 parts of ammonium polyacrylate and 98 parts of water;
wherein the 98 parts of water are divided into two parts, one part is 70 parts, and the other part is 28 parts;
the magnesium salt is a mixture of magnesium chloride and magnesium nitrate; the mass ratio of the magnesium chloride to the magnesium nitrate is 2: 1;
the ammonium polyacrylate M is 200 ten thousand;
the preparation method of the deinking stabilizer for waste paper pulp comprises the following preparation steps:
(1) mixing 2-aminoethanol, ammonium polyacrylate and 70 parts of water, heating to 60 ℃, and stirring at 300rpm to obtain a solution 1;
(2) dissolving magnesium salt into the remaining 28 parts of water to obtain a magnesium salt solution;
(3) and mixing the magnesium salt solution with the solution 1 to prepare the waste paper pulp deinking stabilizer.
Comparative example 3
The difference compared to example 1 is only in the effective content.
A waste paper pulp deinking stabilizer comprises the following components: the waste paper pulp deinking stabilizer comprises the following components in parts by weight: 0.02 part of 2-aminoethanol-1-phosphoric acid, 2 parts of magnesium salt, 4 parts of ammonium polyacrylate and 98 parts of water;
wherein the 98 parts of water are divided into two parts, one part is 70 parts, and the other part is 28 parts;
the magnesium salt is a mixture of magnesium chloride and magnesium nitrate; the mass ratio of the magnesium chloride to the magnesium nitrate is 2: 1;
the ammonium polyacrylate M is 200 ten thousand;
the preparation method and the process of the waste paper pulp deinking stabilizer are the same as those of the example 1.
Comparative example 4
The only difference compared to example 1 is the preparation method.
A deinking stabilizer for waste paper pulp, having the same composition as in example 1.
The preparation method of the deinking stabilizer for waste paper pulp comprises the following preparation steps:
(1) mixing ammonium polyacrylate and 50 parts of water, heating to 60 ℃, and stirring at 300rpm to obtain a polymer solution;
(2) dissolving 2-aminoethanol-1-phosphoric acid and magnesium salt in the remaining 48 parts of water to obtain a salt solution;
(3) and mixing the salt solution and the polymer solution to prepare the waste paper pulp deinking stabilizer.
Comparative example 5
The only difference compared to example 1 is the molecular weight of the ammonium polyacrylate.
A waste paper pulp deinking stabilizer comprises the following components: the waste paper pulp deinking stabilizer comprises the following components in parts by weight: 0.02 part of 2-aminoethanol-1-phosphoric acid, 0.05 part of magnesium salt, 3 parts of ammonium polyacrylate and 98 parts of water;
wherein the 98 parts of water are divided into two parts, one part is 70 parts, and the other part is 28 parts;
the magnesium salt is a mixture of magnesium chloride and magnesium nitrate; the mass ratio of the magnesium chloride to the magnesium nitrate is 2: 1;
the ammonium polyacrylate M is 800 ten thousand;
the preparation method and the process of the waste paper pulp deinking stabilizer are the same as those of the example 1.
Examples of effects
The deinking treatment process comprises the following steps:
step 1: adding 22 tons of absolute dry waste paper pulp into a heat dispersion machine per hour, and simultaneously adding 500kg of hydrogen peroxide per hour for bleaching and deinking;
step 2: 500kg of waste paper pulp deinking stabilizer and 2.5 tons of sodium hydroxide are added into a chemical warm water tank; adding the mixture into a heat dispersion machine in an amount of 300kg per hour after uniformly mixing;
and step 3: and sequentially adding the waste paper pulp subjected to thermal dispersion into a bleaching tower and a latency elimination pool.
In the deinking treatment process, the same batch of waste paper is used for deinking treatment, and the waste paper pulp deinking stabilizers are the waste paper pulp deinking stabilizers obtained in examples 1-4 and comparative examples 1-5 respectively; the final pulp deinking effect is shown in table 1.
TABLE 1 deinking effect of pulp
| Experimental group | Whiteness (ISO)% | Ink removal Rate% | The yield of the paper pulp is% |
| Example 1 | 82.03 | 93.79 | 76.43 |
| Example 2 | 81.74 | 92.95 | 76.81 |
| Example 3 | 81.68 | 93.67 | 76.12 |
| Example 4 | 81.21 | 93.11 | 76.53 |
| Comparative example 1 | 77.91 | 85.26 | 73.37 |
| Comparative example 2 | 75.28 | 87.65 | 73.45 |
| Comparative example 3 | 76.33 | 88.09 | 73.88 |
| Comparative example 4 | 77.56 | 89.46 | 74.16 |
| Comparative example 5 | 75.26 | 84.57 | 73.05 |
Therefore, the waste paper deinking stabilizer provided by the invention can effectively improve the deinking effect of waste paper pulp, and the composition, the preparation method, the using amount and the like of the waste paper deinking stabilizer have important influence on the deinking effect.
The above detailed description is specific to one possible embodiment of the present invention, and the embodiment is not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention should be included in the technical scope of the present invention.
Claims (8)
1. The waste paper pulp deinking stabilizer comprises the following components in parts by weight: 0.01-0.5 part of 2-aminoethanol-1-phosphoric acid, 0.01-1 part of magnesium salt, 0.01-5 parts of ammonium polyacrylate and 90-120 parts of water; the magnesium salt is selected from one or more of magnesium chloride, magnesium iodide, magnesium sulfate and magnesium nitrate; the molecular weight M of the ammonium polyacrylate is 50-400 ten thousand;
the preparation method of the deinking stabilizer comprises the following steps:
(1) mixing 2-aminoethanol-1-phosphoric acid, ammonium polyacrylate and water, heating and stirring to obtain a solution 1;
(2) dissolving magnesium salt into water to obtain a magnesium salt solution;
(3) and mixing the magnesium salt solution with the solution 1 to prepare the waste paper pulp deinking stabilizer.
2. The waste pulp deinking stabilizer according to claim 1, which consists of the following components in parts by weight: 0.02-0.2 part of 2-aminoethanol-1-phosphoric acid, 0.01-0.5 part of magnesium salt, 0.01-3 parts of ammonium polyacrylate and 93-98 parts of water.
3. The waste pulp deinking stabilizer of claim 1 wherein said magnesium salt is a mixture of magnesium chloride and magnesium nitrate.
4. The deinking stabilizer for waste pulp of claim 3, wherein the mass ratio of magnesium chloride to magnesium nitrate is 1-3: 1.
5. A process for the preparation of a stabilizer for deinking waste pulp as claimed in any one of claims 1 to 4, comprising the steps of:
(1) mixing 2-aminoethanol-1-phosphoric acid, ammonium polyacrylate and water, heating and stirring to obtain a solution 1;
(2) dissolving magnesium salt into water to obtain a magnesium salt solution;
(3) and mixing the magnesium salt solution with the solution 1 to prepare the waste paper pulp deinking stabilizer.
6. The method of claim 5 wherein in step (1) the heating is at a temperature of from 50 ℃ to 80 ℃; the rotation speed of the stirring is 200-500 rpm.
7. The method of claim 5 wherein in step (1), the mass ratio of 2-aminoethanol-1-phosphoric acid, ammonium polyacrylate and water is: (0.01-0.5): (0.01-7): (60-80).
8. The method of claim 5 wherein in step (3) the total mass fraction of the effective components of 2-aminoethanol-1-phosphate, ammonium polyacrylate and magnesium salt in the deinking stabilizer is not more than 5%.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103896217A (en) * | 2012-12-29 | 2014-07-02 | 新煤化工设计院（上海）有限公司 | Stabilizer of hydrogen peroxide |
| CN109112819A (en) * | 2018-06-04 | 2019-01-01 | 余赛尔 | Stabilized hydrogen peroxide agent prescription |
| CN109989260A (en) * | 2019-04-20 | 2019-07-09 | 潍坊军涛化工有限公司 | A kind of hydrogen peroxide bleaching stabilizer and its preparation method and application |
-
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- 2020-04-15 CN CN202010294159.4A patent/CN111321620B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103896217A (en) * | 2012-12-29 | 2014-07-02 | 新煤化工设计院（上海）有限公司 | Stabilizer of hydrogen peroxide |
| CN109112819A (en) * | 2018-06-04 | 2019-01-01 | 余赛尔 | Stabilized hydrogen peroxide agent prescription |
| CN109989260A (en) * | 2019-04-20 | 2019-07-09 | 潍坊军涛化工有限公司 | A kind of hydrogen peroxide bleaching stabilizer and its preparation method and application |
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Denomination of invention: A deinking stabilizer for waste pulp and its preparation method Effective date of registration: 20230726 Granted publication date: 20201020 Pledgee: China Co. truction Bank Corp Ma'anshan branch Pledgor: SHANYING INTERNATIONAL HOLDING Co.,Ltd. Registration number: Y2023980049936 |