阅读说明：本技术 一种安全节能的化学药剂生产工艺 (Safe and energy-saving chemical agent production process ) 是由 李广朝 李常利 李铭堂 李修宗 李嘉豪 李常杰 于 2020-11-25 设计创作，主要内容包括：本发明公开了一种安全节能的化学药剂生产工艺,包括以下步骤S1：海绵铜制备,铜矿渣置入稀硫酸溶液中浸泡4～6小时,制得含铜溶液,将铁屑投入含铜溶液中进行置换反应制得海绵铜沉淀物；S2：氧化铜制备,将S1中制得的海绵铜经酸洗、水洗、脱水氧化焙烧制得氧化铜；S3：反应釜反应除杂质铁,将S2中制得的氧化铜投入反应釜中搅拌进行分解转化反应,所述反应釜温度为90～100℃；S4：结晶,将S3步骤中的反应产物进行冷却结晶,往溶液中投入晶种,静置结晶12小时；S5：提纯,将S4步骤的产物经离心机分离提纯得到化学药剂硫酸铜,分离的母液再次用于S3步骤。优点在于：生产过程中可以循环使用母液来加工,不再应用双氧水除铁,降低成本节约能源。(The invention discloses a safe and energy-saving chemical agent production process, which comprises the following steps of S1: preparing sponge copper, namely soaking copper slag in a dilute sulfuric acid solution for 4-6 hours to prepare a copper-containing solution, and putting scrap iron into the copper-containing solution to perform a replacement reaction to prepare a sponge copper precipitate; s2: preparing copper oxide, namely pickling the sponge copper prepared in the S1, washing with water, dehydrating, oxidizing and roasting to prepare copper oxide; s3: removing impurity iron by reaction in a reaction kettle, putting the copper oxide prepared in S2 into the reaction kettle, stirring, and performing decomposition conversion reaction, wherein the temperature of the reaction kettle is 90-100 ℃; s4: crystallizing, namely cooling and crystallizing the reaction product in the step S3, putting seed crystals into the solution, and standing for crystallization for 12 hours; s5: and (4) purifying, namely separating and purifying the product obtained in the step S4 by using a centrifugal machine to obtain a chemical agent copper sulfate, and reusing the separated mother liquor in the step S3. Has the advantages that: the mother liquor can be recycled for processing in the production process, and hydrogen peroxide is not used for removing iron, so that the cost is reduced, and the energy is saved.)

1. A safe and energy-saving chemical agent production process is characterized in that: comprises the following steps

S1: preparing sponge copper, namely soaking copper slag in a dilute sulfuric acid solution for 4-6 hours to prepare a copper-containing solution, and putting scrap iron into the copper-containing solution to perform a replacement reaction to prepare a sponge copper precipitate;

s2: preparing copper oxide, namely pickling the sponge copper prepared in the S1, washing with water, dehydrating, oxidizing and roasting to prepare copper oxide;

s3: removing impurity iron by reaction in a reaction kettle, putting the copper oxide prepared in S2 into the reaction kettle, stirring, and performing decomposition conversion reaction, wherein the temperature of the reaction kettle is 90-100 ℃;

s4: crystallizing, namely cooling and crystallizing the reaction product in the step S3, putting seed crystals into the solution, and standing for crystallization for 12 hours;

s5: and (4) purifying, namely separating and purifying the product obtained in the step S4 by using a centrifugal machine to obtain a chemical agent copper sulfate, and reusing the separated mother liquor in the step S3.

2. A safe and energy-saving chemical agent production process according to claim 1, characterized in that: the mass fraction of the dilute sulphuric acid solute is 60 percent.

3. A safe and energy-saving chemical agent production process according to claim 1, characterized in that: and the pH value of the pickling solution in the step S2 is 0.5-2.0.

4. A safe and energy-saving chemical agent production process according to claim 1, characterized in that: and in the step S2, a fluidized bed roaster is used for oxidizing roasting, the temperature in the fluidized bed roaster is 900-1000 ℃, and the fluidized bed roaster is provided with a flue gas treatment system which is provided with a cyclone dust collector.

5. A safe and energy-saving chemical agent production process according to claim 1, characterized in that: and in the separation process in the step S5, a centrifugal machine is adopted, and the mesh number of filter bags of the centrifugal machine is 250-300 meshes.

Technical Field

The invention relates to the technical field of bactericides, in particular to a safe and energy-saving chemical agent production process.

Background

Chemical agents, also known as bactericides, biocides, bactericidal algicides, microbicides and the like, are chemical substances that have a killing or inhibiting effect on fungi or bacteria. The chemical agent can kill or inhibit the growth and reproduction of pathogens by the virulence of the agent in vitro or in vivo. A chemical substance having a killing or inhibiting effect on fungi or bacteria. The bactericide can kill or inhibit the growth and reproduction of pathogenic bacteria in vitro or in vivo. Some fungicides are not toxic to fungi, but can interfere with the pathogenic processes of fungi or affect the interrelationship between pathogenic hosts, and can kill or inhibit the growth and reproduction of fungi. According to the prevention and treatment effects on diseases, the bactericide is divided into a protective bactericide, a shoveling bactericide and a systemic bactericide; or can be divided into inorganic bactericide, organic sulfur bactericide, organic phosphorus bactericide, organic chlorine bactericide, organic mercury bactericide, heterocyclic bactericide and the like according to the main chemical components of the bactericide. In addition, there are also compounds with control effect on plant diseases, which do not directly have killing or inhibiting effect on the infected germs but only improve the disease resistance of the plants, thereby helping to inhibit disease symptoms or delay the development of diseases, such as changing the tissue structure of the plants, improving the activity of related enzymes, neutralizing the toxins produced by germs or stimulating the plants to produce phytoalexins, and the like. These compounds are also broadly referred to as fungicides. Industrial fungicides are also used to protect textiles, wood, paper, leather, coatings, plastics and optical glass against the growth of mold and are used in a wide variety of applications.

Disclosure of Invention

The invention aims to overcome the technical defects and provide a safe and energy-saving chemical agent production process with good safety and energy-saving effect and strong practicability.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: a safe and energy-saving chemical agent production process comprises the following steps

S1: preparing sponge copper, namely soaking copper slag in a dilute sulfuric acid solution for 4-6 hours to prepare a copper-containing solution, and putting scrap iron into the copper-containing solution to perform a replacement reaction to prepare a sponge copper precipitate;

s2: preparing copper oxide, namely pickling the sponge copper prepared in the S1, washing with water, dehydrating, oxidizing and roasting to prepare copper oxide;

s3: removing impurity iron by reaction in a reaction kettle, putting the copper oxide prepared in S2 into the reaction kettle, stirring, and performing decomposition conversion reaction, wherein the temperature of the reaction kettle is 90-100 ℃;

s4: crystallizing, namely cooling and crystallizing the reaction product in the step S3, putting seed crystals into the solution, and standing for crystallization for 12 hours;

s5: and (4) purifying, namely separating and purifying the product obtained in the step S4 by using a centrifugal machine to obtain a chemical agent copper sulfate, and reusing the separated mother liquor in the step S3.

Further, the mass fraction of the dilute sulfuric acid solute is 60 percent.

Further, the pH of the pickling solution in the step S2 is 0.5 to 2.0.

Further, a fluidized bed roaster is used for oxidizing roasting in the step S2, the temperature in the fluidized bed roaster is 900-1000 ℃, and the fluidized bed roaster is provided with a flue gas treatment system which is provided with a cyclone dust collector.

Further, a centrifuge is adopted in the separation process in the step S5, and the mesh number of filter bags of the centrifuge is 250-300 meshes.

Compared with the prior art, the invention has the advantages that: the chemical agent production process adopts the waste copper slag as the raw material, has low cost, relieves the condition of shortage of copper resources in China, has low total investment cost, can recycle the mother liquor for processing in the production process, does not use hydrogen peroxide to remove iron, reduces the cost and saves energy.

Detailed Description

The present invention is described in further detail below.

A safe and energy-saving chemical agent production process comprises the following steps

S1: preparing sponge copper, namely soaking copper slag in a dilute sulfuric acid solution for 4-6 hours to prepare a copper-containing solution, and putting scrap iron into the copper-containing solution to perform a replacement reaction to prepare a sponge copper precipitate;

s2: preparing copper oxide, namely pickling the sponge copper prepared in the S1, washing with water, dehydrating, oxidizing and roasting to prepare copper oxide;

s3: removing impurity iron by reaction in a reaction kettle, putting the copper oxide prepared in S2 into the reaction kettle, stirring, and performing decomposition conversion reaction, wherein the temperature of the reaction kettle is 90-100 ℃;

s4: crystallizing, namely cooling and crystallizing the reaction product in the step S3, putting seed crystals into the solution, and standing for crystallization for 12 hours;

s5: and (4) purifying, namely separating and purifying the product obtained in the step S4 by using a centrifugal machine to obtain a chemical agent copper sulfate, and reusing the separated mother liquor in the step S3.

The mass fraction of the dilute sulphuric acid solute is 60 percent.

And the pH value of the pickling solution in the step S2 is 0.5-2.0.

And in the step S2, a fluidized bed roaster is used for oxidizing roasting, the temperature in the fluidized bed roaster is 900-1000 ℃, and the fluidized bed roaster is provided with a flue gas treatment system which is provided with a cyclone dust collector.

And in the separation process in the step S5, a centrifugal machine is adopted, and the mesh number of filter bags of the centrifugal machine is 250-300 meshes.

Example (b): the process for producing the copper sulfate by using the sponge copper as the raw material is simple, the technical conditions are not harsh, the product quality is stable, the consumption of the raw material of the red copper is reduced, the cost is reduced, although the roasting process is added in the production process by using the sponge copper as the raw material, the processes of pretreatment, copper dissolution, filtration and concentration of the raw material of the red copper in the production process by using the red copper as the raw material are reduced, so the total investment cost of production is lower, in addition, the treatment method for removing iron from the mother liquor is adopted in the process, the iron is not removed by using hydrogen peroxide, the cost is reduced, and during production, the circulated mother liquor is recycled for a certain number of times to remove the iron, otherwise, the product quality is influenced.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the above embodiments are only a part of the preferred embodiments of the present invention, but not all embodiments. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.