阅读说明：本技术 一种无磷无氟无重金属的替磷剂的制备方法 (Preparation method of phosphorus-free, fluorine-free and heavy metal-free phosphorus replacement agent ) 是由 吴宪进 于 2021-01-04 设计创作，主要内容包括：本发明公开了一种无磷无氟无重金属的替磷剂的制备方法,所述制备方法如下：步骤一：备料：EDTA、硝酸、葡萄糖酸钠、柠檬酸、苹果酸、三乙醇胺,水,添加剂；步骤二：准备容器、在容器中加水并加热；步骤三：在容器内加入柠檬酸、硝酸、EDTA搅拌均匀后再加入葡萄糖酸钠和苹果酸；步骤四：本发明的有益效果是：采用无磷无氟无重金属的原料,在生产和使用过程中产生的废水不含磷、氟、重金属有毒有害污染物,从源头上解决了传统磷化有毒有害成分的废水废渣的污染问题,节省排污费的同时,还有利于生态环境保护；简化了制备工艺的同时、还有助于提高操作的便利性,经过简单处理后废水的排放指标均能达到国家一级排放标准。(The invention discloses a preparation method of a phosphorus-free, fluorine-free and heavy metal-free phosphorus substitute, which comprises the following steps: the method comprises the following steps: preparing materials: EDTA, nitric acid, sodium gluconate, citric acid, malic acid, triethanolamine, water and additives; step two: preparing a container, adding water into the container and heating; step three: adding citric acid, nitric acid and EDTA into a container, uniformly stirring, and then adding sodium gluconate and malic acid; step four: the invention has the beneficial effects that: the raw materials which are phosphorus-free, fluorine-free and heavy metal-free are adopted, and the wastewater generated in the production and use processes does not contain toxic and harmful pollutants of phosphorus, fluorine and heavy metal, so that the pollution problem of the wastewater and waste residues of the traditional toxic and harmful phosphorization components is solved from the source, the pollution discharge cost is saved, and the ecological environment protection is facilitated; the preparation process is simplified, the convenience of operation is improved, and the discharge index of the wastewater after simple treatment can reach the national first-level discharge standard.)

1. A preparation method of a phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent is characterized by comprising the following steps: the preparation method comprises the following steps:

the method comprises the following steps: preparing materials: EDTA, nitric acid, sodium gluconate, citric acid, malic acid, triethanolamine, water and additives;

step two: preparing a container, adding water into the container and heating;

step three: adding citric acid, nitric acid and EDTA into a container, uniformly stirring, and then adding sodium gluconate and malic acid;

step four: adding triethanolamine into the mixed solution in the third step, and adjusting the pH value;

step five: adding an additive into the mixed solution obtained in the fourth step;

step six: filtering the mixed liquid obtained in the fifth step to obtain a finished product;

step seven: and (5) detecting the finished product, barreling and warehousing after the finished product is qualified.

2. The method for preparing the phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent according to claim 1, wherein the phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent comprises the following steps: in the second step, 500 g of water is added into a container and heated to 40-60 ℃.

3. The method for preparing the phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent according to claim 1, wherein the phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent comprises the following steps: in the fourth step, the pH value is adjusted to 4-6.

4. The method for preparing the phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent according to claim 1, wherein the phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent comprises the following steps: the preparation method of the additive comprises the following steps:

the method comprises the following steps: placing water in a container and heating the water;

step two: adding acid into the heated container, and stirring to dissolve the acid;

step three: after the acid is dissolved, adding salt, stirring until the salt is dissolved, and cooling for later use.

5. The method for preparing phosphorus-free, fluorine-free and heavy metal-free phosphorus-replacing agent according to claim 4, wherein the phosphorus-free, fluorine-free and heavy metal-free phosphorus-replacing agent comprises: in the first step, water is heated to 60-80 ℃.

6. The method for preparing phosphorus-free, fluorine-free and heavy metal-free phosphorus-replacing agent according to claim 4, wherein the phosphorus-free, fluorine-free and heavy metal-free phosphorus-replacing agent comprises: and in the second step, adding an acid into the heated container, wherein the acid is one of gluconic acid, citric acid and malic acid.

7. The method for preparing phosphorus-free, fluorine-free and heavy metal-free phosphorus-replacing agent according to claim 4, wherein the phosphorus-free, fluorine-free and heavy metal-free phosphorus-replacing agent comprises: in the third step, after the acid is dissolved, salt is added, wherein the salt is one of sodium tungstate, sodium molybdate and sodium silicate.

Technical Field

The invention belongs to the technical field of phosphorus substitute preparation, and particularly relates to a preparation method of a phosphorus-free, fluorine-free and heavy metal-free phosphorus substitute.

Background

The phosphorization is a basic process for metal surface treatment, the technology has been born for more than one hundred years, the product performance is stable, the process is simple, and the phosphorization is widely used in various metal processing factories in China at present and is mainly applied to the surface treatment of metal basic parts. Phosphating is a process in which chemical and electrochemical reactions form a phosphate chemical conversion coating, which is referred to as a phosphating coating. The phosphorization product is prepared by taking phosphoric acid and phosphate as a basis and adding heavy metal salts containing zinc, nickel, copper, manganese, chromium and the like and fluoride-containing salts as additives, and according to the characteristics of the phosphorization process, the phosphorization wastewater contains harmful components containing phosphorus, fluorine, zinc, nickel, copper, manganese, chromium and the like and also can generate a large amount of phosphorus-containing waste residues; the purpose of the phosphorization is mainly as follows: providing protection for the base metal to prevent the metal from being corroded; the primer is used for priming before painting, and the adhesive force and the corrosion resistance of a paint film layer are improved; plays a role in friction reduction and lubrication in the metal cold working process. The technology brings convenience to people and also brings environmental pollution problems, and the main pollutants are phosphorus, heavy metals and fluorine. In recent years, the large-area blue algae outbreak in a plurality of lakes in China is only one corner of icebergs polluted by the phosphating agent, and the pollution of the phosphating agent, besides phosphorus, is also accompanied by the pollution of fluorine and a plurality of heavy metals in the use process. According to expert analysis, once the phosphorization pollution is generated, the pollution cannot be solved and controlled in a short time by the existing treatment method, and the treatment process needs decades.

In order to solve the pollution problem of toxic and harmful components of the phosphating waste water from the source; the generation of phosphorization waste residues is avoided; ensures the wastewater index and reaches the discharge standard, so a preparation method of the phosphorus-free, fluorine-free and heavy metal-free phosphorus substitute is provided.

Disclosure of Invention

The invention aims to provide a preparation method of a phosphorus-free, fluorine-free and heavy metal-free phosphorus substitute, which solves the pollution problem of toxic and harmful components in phosphating wastewater from the source; the generation of phosphorization waste residues is avoided; ensure the wastewater index and reach the discharge standard.

In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent comprises the following steps:

the method comprises the following steps: preparing materials: EDTA, nitric acid, sodium gluconate, citric acid, malic acid, triethanolamine, water and additives;

step two: preparing a container, adding water into the container and heating;

step three: adding citric acid, nitric acid and EDTA into a container, uniformly stirring, and then adding sodium gluconate and malic acid;

step four: adding triethanolamine into the mixed solution in the third step, and adjusting the pH value;

step five: adding an additive into the mixed solution obtained in the fourth step;

step six: filtering the mixed liquid obtained in the fifth step to obtain a finished product;

step seven: and (5) detecting the finished product, barreling and warehousing after the finished product is qualified.

In the second step, 500 g of water is added into a container and heated to 40-60 ℃.

In a preferred embodiment of the present invention, in the fourth step, the pH is adjusted to 4 to 6.

As a preferable technical scheme of the invention, the preparation method of the additive comprises the following steps:

the method comprises the following steps: placing water in a container and heating the water;

step two: adding acid into the heated container, and stirring to dissolve the acid;

step three: after the acid is dissolved, adding salt, stirring until the salt is dissolved, and cooling for later use.

In a preferred embodiment of the present invention, in the first step, the water is heated to 60-80 ℃.

In a preferred embodiment of the present invention, in the second step, an acid is added to the heated container, and the acid is one of gluconic acid, citric acid, and malic acid.

As a preferable technical scheme of the present invention, in the third step, after the acid is dissolved, a salt is added, wherein the salt is one of sodium tungstate, sodium molybdate, and sodium silicate.

Compared with the prior art, the invention has the beneficial effects that:

(1) the raw materials which are phosphorus-free, fluorine-free and heavy metal-free are adopted, and the wastewater generated in the production and use processes does not contain toxic and harmful pollutants of phosphorus, fluorine and heavy metal, so that the pollution problem of the wastewater and waste residues of the traditional toxic and harmful phosphorization components is solved from the source, the pollution discharge cost is saved, and the ecological environment protection is facilitated;

(2) the preparation process is simplified, the convenience of operation is improved, and the discharge index of the wastewater after simple treatment can reach the national first-level discharge standard.

Drawings

FIG. 1 is a flow chart of the preparation method of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides a technical solution: a preparation method of a phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent comprises the following steps:

the method comprises the following steps: preparing materials: EDTA, nitric acid, sodium gluconate, citric acid, malic acid, triethanolamine, water and additives;

step two: preparing a container, adding 500 g of water into the container and heating to 40 ℃;

step three: adding citric acid, nitric acid and EDTA into a container, uniformly stirring, and then adding sodium gluconate and malic acid;

step four: adding triethanolamine into the mixed solution in the third step, and adjusting the pH value to 4;

step five: adding an additive into the mixed solution obtained in the fourth step;

step six: filtering the mixed liquid obtained in the fifth step to obtain a finished product;

step seven: and (5) detecting the finished product, barreling and warehousing after the finished product is qualified.

In this embodiment, the preparation method of the additive is preferably as follows:

the method comprises the following steps: placing water in a container and heating the water to 60 ℃;

step two: adding acid into the heated container, and stirring to dissolve the acid; the acid is gluconic acid;

step three: after the acid is dissolved, adding salt, stirring until the salt is dissolved, and cooling for later use, wherein the salt is sodium tungstate.

The invention adopts phosphorus-free, fluorine-free and heavy metal-free raw materials, and the wastewater generated in the production and use processes does not contain toxic and harmful pollutants of phosphorus, fluorine and heavy metal, so that the pollution problem of the wastewater and waste residue of the traditional toxic and harmful phosphorization components is solved from the source, the pollution discharge cost is saved, and the ecological environment protection is facilitated;

the preparation process is simplified, the convenience of operation is improved, and the discharge index of the wastewater after simple treatment can reach the national first-level discharge standard.

Example 2

Referring to fig. 1, the present invention provides a technical solution: a preparation method of a phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent comprises the following steps:

the method comprises the following steps: preparing materials: EDTA, nitric acid, sodium gluconate, citric acid, malic acid, triethanolamine, water and additives;

step two: preparing a container, adding 500 g of water into the container and heating to 50 ℃;

step three: adding citric acid, nitric acid and EDTA into a container, uniformly stirring, and then adding sodium gluconate and malic acid;

step four: adding triethanolamine into the mixed solution in the third step, and adjusting the pH value to 5;

step five: adding an additive into the mixed solution obtained in the fourth step;

step six: filtering the mixed liquid obtained in the fifth step to obtain a finished product;

step seven: and (5) detecting the finished product, barreling and warehousing after the finished product is qualified.

In this embodiment, the preparation method of the additive is preferably as follows:

the method comprises the following steps: placing water in a container and heating the water to 70 ℃;

step two: adding acid into the heated container, and stirring to dissolve the acid; the acid is citric acid;

step three: after the acid is dissolved, adding salt, stirring until the salt is dissolved, and cooling for later use, wherein the salt is sodium molybdate.

The invention adopts phosphorus-free, fluorine-free and heavy metal-free raw materials, and the wastewater generated in the production and use processes does not contain toxic and harmful pollutants of phosphorus, fluorine and heavy metal, so that the pollution problem of the wastewater and waste residue of the traditional toxic and harmful phosphorization components is solved from the source, the pollution discharge cost is saved, and the ecological environment protection is facilitated;

the preparation process is simplified, the convenience of operation is improved, and the discharge index of the wastewater after simple treatment can reach the national first-level discharge standard.

Example 3

Referring to fig. 1, the present invention provides a technical solution: a preparation method of a phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent comprises the following steps:

the method comprises the following steps: preparing materials: EDTA, nitric acid, sodium gluconate, citric acid, malic acid, triethanolamine, water and additives;

step two: preparing a container, adding 500 g of water into the container and heating to 60 ℃;

step three: adding citric acid, nitric acid and EDTA into a container, uniformly stirring, and then adding sodium gluconate and malic acid;

step four: adding triethanolamine into the mixed solution in the third step, and adjusting the pH value to 6;

step five: adding an additive into the mixed solution obtained in the fourth step;

step six: filtering the mixed liquid obtained in the fifth step to obtain a finished product;

step seven: and (5) detecting the finished product, barreling and warehousing after the finished product is qualified.

In this embodiment, the preparation method of the additive is preferably as follows:

the method comprises the following steps: placing water in a container, and heating the water to 80 ℃;

step two: adding acid into the heated container, and stirring to dissolve the acid; the acid is malic acid;

step three: after the acid is dissolved, adding salt, stirring until the salt is dissolved, and cooling for later use, wherein the salt is sodium silicate.

The invention adopts phosphorus-free, fluorine-free and heavy metal-free raw materials, and the wastewater generated in the production and use processes does not contain toxic and harmful pollutants of phosphorus, fluorine and heavy metal, so that the pollution problem of the wastewater and waste residue of the traditional toxic and harmful phosphorization components is solved from the source, the pollution discharge cost is saved, and the ecological environment protection is facilitated;

the preparation process is simplified, the convenience of operation is improved, and the discharge index of the wastewater after simple treatment can reach the national first-level discharge standard.

Example 4

Referring to fig. 1, the present invention provides a technical solution: a preparation method of a phosphorus-free, fluorine-free and heavy metal-free phosphorus replacing agent comprises the following steps:

the method comprises the following steps: preparing materials: EDTA, nitric acid, sodium gluconate, citric acid, malic acid, triethanolamine, water and additives;

step two: preparing a container, adding 500 g of water into the container and heating to 55 ℃;

step three: adding citric acid, nitric acid and EDTA into a container, uniformly stirring, and then adding sodium gluconate and malic acid;

step four: adding triethanolamine into the mixed solution in the third step, and adjusting the pH value to 5;

step five: adding an additive into the mixed solution obtained in the fourth step;

step six: filtering the mixed liquid obtained in the fifth step to obtain a finished product;

step seven: and (5) detecting the finished product, barreling and warehousing after the finished product is qualified.

In this embodiment, the preparation method of the additive is preferably as follows:

the method comprises the following steps: placing water in a container and heating the water to 66 ℃;

step two: adding acid into the heated container, and stirring to dissolve the acid; the acid is citric acid;

step three: after the acid is dissolved, adding salt, stirring until the salt is dissolved, and cooling for later use, wherein the salt is sodium tungstate.

The invention adopts phosphorus-free, fluorine-free and heavy metal-free raw materials, and the wastewater generated in the production and use processes does not contain toxic and harmful pollutants of phosphorus, fluorine and heavy metal, so that the pollution problem of the wastewater and waste residue of the traditional toxic and harmful phosphorization components is solved from the source, the pollution discharge cost is saved, and the ecological environment protection is facilitated;

the preparation process is simplified, the convenience of operation is improved, and the discharge index of the wastewater after simple treatment can reach the national first-level discharge standard.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.