CN111138108A - Method for preparing chelating agent in construction industry - Google Patents
Method for preparing chelating agent in construction industry Download PDFInfo
- Publication number
- CN111138108A CN111138108A CN201911387419.6A CN201911387419A CN111138108A CN 111138108 A CN111138108 A CN 111138108A CN 201911387419 A CN201911387419 A CN 201911387419A CN 111138108 A CN111138108 A CN 111138108A
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- Prior art keywords
- stirring
- weight
- parts
- reaction kettle
- water
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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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
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for preparing chelating agent in building industry, which comprises the steps of adding 50-60 parts by weight of water into a first reaction kettle, stirring by using a first stirrer, simultaneously heating by using heater inlet water, after the stirring, adding 1-15 parts by weight of diphenylthiourea into the water in the first reaction kettle, slowly adding 5-15 parts by weight of sodium hydroxyethylidene diphosphonate after fully stirring uniformly, fully reacting, standing after complete reaction to obtain an intermediate product A, and the method has the advantages of being suitable for being used when solid waste is used for manufacturing building boards, combining different types of metal chelating agents in board raw materials to obtain a product with high-efficiency heavy metal removal rate effect, low in treatment cost, environment-friendly, safe and nontoxic, suitable for being used in multiple fields and large area, the chelating action of heavy metal is used to change the activated state into stable state, so improving the long-term stability of the stabilized product.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a method for preparing a chelating agent in the building industry.
Background
The metal atom or ion reacts with a ligand containing two or more coordinating atoms to form a complex having a cyclic structure, which is called a chelate. Such ligand substances capable of forming chelates are called chelating agents, also known as complexing agents.
The cement plate for construction is produced by adopting a special production process and through pulping, copying, ten thousand ton press pressurization and four curing procedures, and can be made by using solid waste materials when the cement plate is made, so that the cost can be effectively reduced.
Disclosure of Invention
The present invention aims to provide a method for preparing chelating agents in the construction industry to solve the problems set forth in the background art.
The purpose of the invention is realized by the following technical scheme: a method for preparing a chelant for the construction industry, the method comprising the steps of:
step 1: adding 50-60 parts by weight of water into a first reaction kettle, stirring by using a first stirrer, simultaneously heating by using heater inlet water, adding 1-15 parts by weight of diphenylthiourea into the water in the first reaction kettle in a stirring state, slowly adding 5-15 parts by weight of sodium hydroxyethylidene diphosphonate after fully stirring uniformly, fully reacting, and standing after complete reaction to obtain an intermediate product A;
step 2: adding 50-60 parts by weight of water into a second reaction kettle, stirring by using a second stirrer, heating by using a heater to feed water, sequentially adding 8-20 parts by weight of sodium nitrilotriacetate, 6-12 parts by weight of ammonium citrate, 4-20 parts by weight of glycolic acid, 6-18 parts by weight of hydroxyethyl ethylenediamine triacetic acid and 1-10 parts by weight of sodium sulfide into the water of the second reaction kettle in a stirring state, fully stirring in a microwave environment, and standing to obtain a mixed emulsion B;
and step 3: and (3) adding the intermediate product A obtained in the step (1) into a third reaction kettle, stirring by using a third stirrer, heating by using a heater for controlling the temperature, adding the mixed emulsion B obtained in the step (2) after the stirring is finished, and stirring and mixing to obtain a finished product.
In the invention, the temperature of the first reaction kettle in the step 1 is controlled at 50-55 ℃, and the stirring time is 20-30 minutes.
In the invention, the temperature of the second reaction kettle in the step 2 is controlled at 60-75 ℃, and the stirring time is 60-80 minutes.
In the invention, the temperature of the first reaction kettle in the step 3 is controlled to be 55-65 ℃, and the stirring time is 50-60 minutes.
In the invention, the power of the microwave in the microwave environment in the step 2 is 500W-1000W.
Compared with the prior art, the method for preparing the chelating agent in the building industry has the beneficial effects that the method is suitable for being used when solid wastes are utilized to manufacture building boards, different types of metal chelating agents in board raw materials can be combined and compounded to obtain a product with high-efficiency heavy metal removal rate effect, the treatment cost is low, the product is environment-friendly, safe and nontoxic, the method is suitable for being used in multiple fields in a large area, and the chelating effect of heavy metals is utilized to convert an activated state into a stable state, so that the long-term stability of a stabilized product is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
The invention discloses a method for preparing a chelating agent in the construction industry, which comprises the following steps:
step 1: adding 50-60 parts by weight of water into a first reaction kettle, stirring by using a first stirrer, simultaneously heating by using heater inlet water, adding 1-15 parts by weight of diphenylthiourea into the water in the first reaction kettle in a stirring state, slowly adding 5-15 parts by weight of sodium hydroxyethylidene diphosphonate after fully stirring uniformly, fully reacting, and standing after complete reaction to obtain an intermediate product A;
step 2: adding 50-60 parts by weight of water into a second reaction kettle, stirring by using a second stirrer, heating by using a heater to feed water, sequentially adding 8-20 parts by weight of sodium nitrilotriacetate, 6-12 parts by weight of ammonium citrate, 4-20 parts by weight of glycolic acid, 6-18 parts by weight of hydroxyethyl ethylenediamine triacetic acid and 1-10 parts by weight of sodium sulfide into the water of the second reaction kettle in a stirring state, fully stirring in a microwave environment, and standing to obtain a mixed emulsion B;
and step 3: and (3) adding the intermediate product A obtained in the step (1) into a third reaction kettle, stirring by using a third stirrer, heating by using a heater for controlling the temperature, adding the mixed emulsion B obtained in the step (2) after the stirring is finished, and stirring and mixing to obtain a finished product.
In the invention, the temperature of the first reaction kettle in the step 1 is controlled at 50-55 ℃, and the stirring time is 20-30 minutes.
In the invention, the temperature of the second reaction kettle in the step 2 is controlled at 60-75 ℃, and the stirring time is 60-80 minutes.
In the invention, the temperature of the first reaction kettle in the step 3 is controlled to be 55-65 ℃, and the stirring time is 50-60 minutes.
In the invention, the power of the microwave in the microwave environment in the step 2 is 500W-1000W.
The method for preparing the chelating agent in the building industry is suitable for being used when solid wastes are used for manufacturing building boards, different types of metal chelating agents in board raw materials can be combined and compounded to obtain a product with high-efficiency heavy metal removal rate effect, the treatment cost is low, the method is environment-friendly, safe and nontoxic, the method is suitable for being used in a large area in multiple fields, the activated state of the product is changed into the stable state by the chelation of the heavy metal, and the long-term stability of the stabilized product is further improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A method for preparing a chelating agent for the construction industry, characterized in that: the method comprises the following steps:
step 1: adding 50-60 parts by weight of water into a first reaction kettle, stirring by using a first stirrer, simultaneously heating by using heater inlet water, adding 1-15 parts by weight of diphenylthiourea into the water in the first reaction kettle in a stirring state, slowly adding 5-15 parts by weight of sodium hydroxyethylidene diphosphonate after fully stirring uniformly, fully reacting, and standing after complete reaction to obtain an intermediate product A;
step 2: adding 50-60 parts by weight of water into a second reaction kettle, stirring by using a second stirrer, heating by using a heater to feed water, sequentially adding 8-20 parts by weight of sodium nitrilotriacetate, 6-12 parts by weight of ammonium citrate, 4-20 parts by weight of glycolic acid, 6-18 parts by weight of hydroxyethyl ethylenediamine triacetic acid and 1-10 parts by weight of sodium sulfide into the water of the second reaction kettle in a stirring state, fully stirring in a microwave environment, and standing to obtain a mixed emulsion B;
and step 3: and (3) adding the intermediate product A obtained in the step (1) into a third reaction kettle, stirring by using a third stirrer, heating by using a heater for controlling the temperature, adding the mixed emulsion B obtained in the step (2) after the stirring is finished, and stirring and mixing to obtain a finished product.
2. The method for preparing chelating agent for building industry according to claim 1, characterized in that: in the step 1, the temperature of the first reaction kettle is controlled to be 50-55 ℃, and the stirring time is 20-30 minutes.
3. The method for preparing chelating agent for building industry according to claim 1, characterized in that: in the step 2, the temperature of the second reaction kettle is controlled at 60-75 ℃, and the stirring time is 60-80 minutes.
4. The method for preparing chelating agent for building industry according to claim 1, characterized in that: in the step 3, the temperature of the first reaction kettle is controlled to be 55-65 ℃, and the stirring time is 50-60 minutes.
5. The method for preparing chelating agent for building industry according to claim 1, characterized in that: the power of the microwave in the microwave environment in the step 2 is 500W-1000W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387419.6A CN111138108A (en) | 2019-12-30 | 2019-12-30 | Method for preparing chelating agent in construction industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387419.6A CN111138108A (en) | 2019-12-30 | 2019-12-30 | Method for preparing chelating agent in construction industry |
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| Publication Number | Publication Date |
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| CN111138108A true CN111138108A (en) | 2020-05-12 |
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| CN201911387419.6A Pending CN111138108A (en) | 2019-12-30 | 2019-12-30 | Method for preparing chelating agent in construction industry |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106377866A (en) * | 2016-08-15 | 2017-02-08 | 南京鑫豪高分子材料有限公司 | Heavy metal chelating agent |
| CN109502726A (en) * | 2017-09-15 | 2019-03-22 | 南京鑫豪高分子材料有限公司 | A kind of preparation method of efficient heavy chelating agent |
| CN109502715A (en) * | 2017-09-15 | 2019-03-22 | 南京鑫豪高分子材料有限公司 | A kind of efficient heavy chelating agent |
| CN109502728A (en) * | 2017-09-15 | 2019-03-22 | 南京鑫豪高分子材料有限公司 | A kind of preparation method of alkaline heavy metal chelating agent |
| CN110330089A (en) * | 2019-07-09 | 2019-10-15 | 安徽安江环保科技有限公司 | A kind of compound heavy metal chelant and preparation method thereof |
| CN110485158A (en) * | 2019-08-06 | 2019-11-22 | 广东省资源综合利用研究所 | A kind of chelating agent and its preparation method and application |
-
2019
- 2019-12-30 CN CN201911387419.6A patent/CN111138108A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106377866A (en) * | 2016-08-15 | 2017-02-08 | 南京鑫豪高分子材料有限公司 | Heavy metal chelating agent |
| CN109502726A (en) * | 2017-09-15 | 2019-03-22 | 南京鑫豪高分子材料有限公司 | A kind of preparation method of efficient heavy chelating agent |
| CN109502715A (en) * | 2017-09-15 | 2019-03-22 | 南京鑫豪高分子材料有限公司 | A kind of efficient heavy chelating agent |
| CN109502728A (en) * | 2017-09-15 | 2019-03-22 | 南京鑫豪高分子材料有限公司 | A kind of preparation method of alkaline heavy metal chelating agent |
| CN110330089A (en) * | 2019-07-09 | 2019-10-15 | 安徽安江环保科技有限公司 | A kind of compound heavy metal chelant and preparation method thereof |
| CN110485158A (en) * | 2019-08-06 | 2019-11-22 | 广东省资源综合利用研究所 | A kind of chelating agent and its preparation method and application |
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