Treatment agent for treating formaldehyde and preparation method thereof

Abstract

The invention relates to a treatment agent for treating formaldehyde and a preparation method thereof. The treatment agent comprises active components, an adsorbent and a stabilizer, wherein the active components comprise 30-50% of an amino compound, 10-20% of an oxidant and 5-10% of a catalyst; an adsorbent: 20-30% of activated carbon and 10-15% of diatomite; and a stabilizer: 5-10% of polyvinyl alcohol and 3-5% of glycerol. The formaldehyde treatment agent has the beneficial effects that formaldehyde can be quickly decomposed through chemical reaction, residual formaldehyde can be captured through physical adsorption, formaldehyde is treated through chemical and physical dual methods, high efficiency is achieved, the treatment effect can be effectively prolonged through the mutual synergistic effect of active ingredients and an adsorbent in the agent, and the treatment effect is improved. Reaction products are harmless substances, so that secondary pollution is avoided, the method is safer and more environment-friendly, the cost of the adopted raw materials is relatively low, and the adopted preparation process is relatively simple and has certain economical efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and particularly relates to a treatment agent for treating formaldehyde and a preparation method thereof. Background Art

[0002] Formaldehyde, with the chemical formula HCHO, is a colorless gas with a strong pungent odor and is volatile at room temperature. It is an indispensable raw material in many industrial processes, such as manufacturing adhesives, coatings, paints, synthetic resins, and some pharmaceuticals and dyes. In addition, formaldehyde is also used as a disinfectant and preservative, commonly found in hospitals, laboratories, and certain food storage places.

[0003] However, the harm of formaldehyde to human health cannot be ignored. Due to its volatility and high toxicity, long-term exposure or inhalation of formaldehyde will have various negative impacts on the human body. First of all, formaldehyde will irritate the respiratory tract, causing symptoms such as coughing, wheezing, and difficulty breathing, and may even lead to pneumonia and bronchial asthma in severe cases. Secondly, formaldehyde will also irritate the skin and eyes, resulting in skin redness, itching, dryness, as well as eye discomfort and conjunctivitis. In addition, formaldehyde is considered a potential carcinogen, and long-term exposure may increase the risk of developing malignant tumors such as nasopharyngeal cancer and leukemia.

[0004] Therefore, when using formaldehyde and its related products, safety regulations must be strictly observed, and effective protective measures should be taken, such as wearing protective masks, gloves, and goggles, and maintaining indoor ventilation. At the same time, the usage amount of formaldehyde should be minimized as much as possible, and environmentally friendly and non-toxic alternatives should be selected to reduce the impact on human health and the environment. Currently, common formaldehyde treatment methods on the market include physical adsorption, photocatalytic oxidation, chemical neutralization, etc. However, these methods have the following problems: 1. Physical adsorption method: The adsorption capacity is limited, it is easy to be saturated, and it needs to be replaced frequently.

[0005] 2. Photocatalytic oxidation method: It requires light conditions, and the efficiency is limited by the environment.

[0006] 3. Chemical neutralization method: The reaction rate is slow, the persistence is poor, and secondary pollution may be generated. Summary of the Invention

[0007] The object of the present invention is to provide a treatment agent for formaldehyde treatment and a preparation method thereof in view of the deficiencies and defects in the prior art. The present invention can not only rapidly decompose formaldehyde through chemical reactions, but also capture residual formaldehyde through physical adsorption. Formaldehyde is treated by both chemical and physical methods, which has high efficiency. Moreover, the active ingredients and adsorbents in the agent act synergistically with each other, which can effectively prolong the treatment effect. Its reaction products are all harmless substances, thus avoiding secondary pollution, being safer and more environmentally friendly. The cost of the raw materials used is relatively low, and the adopted preparation process is relatively simple, having a certain economy.

[0008] To achieve the above object, the present invention adopts the following technical solutions: A treatment agent for formaldehyde treatment includes active ingredients, adsorbents, and stabilizers: Active ingredients: 30 - 50% amino compounds, 10 - 20% oxidants, 5 - 10% catalysts, and the balance is water; Adsorbents: 20 - 30% activated carbon, 10 - 15% diatomaceous earth, and the balance is water; Stabilizers: 5 - 10% polyvinyl alcohol, 3 - 5% glycerol, and the balance is water. All of the above are volume fractions.

[0009] Further, the amino compounds can chemically react with formaldehyde to form stable hydroxymethyl derivatives, and the amino compounds include urea, ethylenediamine, and triethanolamine. The oxidants can oxidize formaldehyde to formic acid or carbon dioxide and water, and the oxidants include hydrogen peroxide and potassium permanganate. The catalysts can accelerate the decomposition and reaction of the oxidants, and the catalysts include titanium dioxide (TiO2) and zinc oxide (ZnO).

[0010] A preparation method of a treatment agent for formaldehyde treatment includes the preparation of active ingredients, the preparation of adsorbents, the preparation of stabilizers, and the overall preparation of the agent.

[0011] Further, the preparation steps of the active ingredients are specifically as follows: Add the amino compounds and oxidants to the reaction kettle in proportion; Stir at 20 - 30 °C for 30 minutes to fully mix them; Add the catalyst and continue to stir for 10 minutes to form a uniform active ingredient mixture.

[0012] Further, the preparation of the adsorbent is specifically as follows: Mix the activated carbon and diatomaceous earth in proportion and grind them in a ball mill for 30 minutes to make the particles uniform, forming an adsorbent mixture.

[0013] Further, the preparation of the stabilizer is specifically as follows: Mix the polyvinyl alcohol and glycerol in proportion and heat and stir them in a 50 °C water bath until completely dissolved, forming a stabilizer mixture.

[0014] Further, the overall preparation of the medicament is specifically as follows: Add the active ingredient mixture, adsorbent mixture and stabilizer mixture into a mixer in proportion; Stir at room temperature for 1 hour to make them fully mixed; Then, the uniformly mixed medicament is made into powder or granular form through a spray drying device; Pack and store in the warehouse for standby.

[0015] Further, when mixing, the active ingredients should be mixed evenly first, then the adsorbent is added, and finally the stabilizer is added to ensure that all components are fully mixed.

[0016] Further, the stirring speed during stirring should be controlled at 200 - 300 rpm. Too fast may cause component separation, and too slow may cause uneven mixing. Also, the temperature during stirring should be controlled at 20 - 30 °C to avoid component decomposition or failure caused by high temperature.

[0017] After adopting the above technical solution, the beneficial effects of the present invention are as follows: The present invention has at least the following advantages: 1. High efficiency: It can not only rapidly decompose formaldehyde through chemical reactions, but also capture residual formaldehyde through physical adsorption at the same time. It processes formaldehyde through dual chemical and physical methods, showing high efficiency.

[0018] 2. Persistence: Utilizing the synergistic effect between the active ingredients and the adsorbent in the medicament can effectively extend the treatment effect.

[0019] 3. Environmental protection: Its reaction products are all harmless substances, thus avoiding secondary pollution and being safer and more environmentally friendly.

[0020] 4. Economy: The cost of the raw materials used is relatively low, and the adopted preparation process is relatively simple, showing a certain degree of economy. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a flow schematic diagram of the present invention. Detailed Embodiments

[0023] Refer to Figure 1 As shown, the technical solution adopted in this detailed embodiment is as follows: It includes active ingredients, adsorbents, and stabilizers: Active ingredients: 30 - 50% amino compounds, 10 - 20% oxidants, 5 - 10% catalysts, the balance being water; wherein, the amino compounds can chemically react with formaldehyde to form stable hydroxymethyl derivatives, and the amino compounds include urea, ethylenediamine, and triethanolamine, the oxidants can oxidize formaldehyde to formic acid or carbon dioxide and water, and the oxidants include hydrogen peroxide and potassium permanganate, and the catalysts can accelerate the decomposition and reaction of the oxidants, and the catalysts include titanium dioxide (TiO2) and zinc oxide (ZnO). Adsorbent: 20 - 30% activated carbon (activated carbon has a high specific surface area and a rich pore structure, and can effectively adsorb formaldehyde), 10 - 15% diatomaceous earth (diatomaceous earth has a porous structure and can enhance the adsorption capacity of the agent), the balance being water; Stabilizer: 5 - 10% polyvinyl alcohol (polyvinyl alcohol can improve the stability and adhesion of the agent), 3 - 5% glycerol (glycerol is used as a humectant and can prevent the agent from drying too quickly), the balance being water.

[0024] A preparation method of a treatment agent for treating formaldehyde, which includes the preparation of active ingredients, the preparation of adsorbents, the preparation of stabilizers, and the overall preparation of the agent.

[0025] More specifically, the preparation steps of the active ingredients are specifically as follows: S1, Add the amino compounds and oxidants to the reaction kettle in proportion; S2, Stir at 20 - 30 °C for 30 minutes to make them fully mixed; S3, Add the catalyst and continue to stir for 10 minutes to form a uniform active ingredient mixture.

[0026] More specifically, the preparation of the adsorbent is specifically as follows: Mix the activated carbon and diatomaceous earth in proportion and grind them in a ball mill for 30 minutes to make their particles uniform and form an adsorbent mixture.

[0027] More specifically, the preparation of the stabilizer is specifically as follows: Mix the polyvinyl alcohol and glycerol in proportion and heat and stir in a water bath at 50 °C until completely dissolved to form a stabilizer mixture.

[0028] More specifically, the overall preparation of the agent is specifically as follows: S1, Add the active ingredient mixture, the adsorbent mixture, and the stabilizer mixture to the mixer in proportion; wherein, when mixing, first mix the active ingredients evenly, then add the adsorbent, and finally add the stabilizer to ensure that each component is fully mixed.

[0029] S2. Stir for 1 hour at room temperature to ensure thorough mixing. The stirring speed should be controlled between 200 - 300 rpm. If it is too fast, component separation may occur; if too slow, uneven mixing may result. Also, the temperature during stirring should be controlled between 20 - 30 °C to avoid component decomposition or failure caused by high temperature.

[0030] S3. Then, make the uniformly mixed medicament into powder or granular form through a spray drying device.

[0031] S4. Package and store in the warehouse for standby.

[0032] The following are related examples in the present invention Example

[0033] It is prepared using active ingredients (40% urea, 15% hydrogen peroxide, 5% titanium dioxide, with the balance being water), adsorbent (25% activated carbon and 10% diatomaceous earth, with the balance being water), and stabilizer (8% polyvinyl alcohol, 3% glycerol, with the balance being water).

[0034] The specific preparation method is as follows: 1. Add urea and hydrogen peroxide to the reaction kettle and stir at 25 °C for 30 minutes.

[0035] 2. Add titanium dioxide and continue stirring for 10 minutes.

[0036] 3. Mix and grind activated carbon and diatomaceous earth for 30 minutes.

[0037] 4. Heat and dissolve polyvinyl alcohol and glycerol in a 50 °C water bath.

[0038] 5. Add all components to the mixer and stir for 1 hour to make a powdered medicament. Example

[0039] It is prepared using active ingredients (35% ethylenediamine, 20% potassium permanganate, and 10% zinc oxide, with the balance being water), adsorbent (30% activated carbon and 15% diatomaceous earth, with the balance being water), and stabilizer (10% polyvinyl alcohol, 5% glycerol, with the balance being water).

[0040] The specific preparation method is as follows: 1. Add ethylenediamine and potassium permanganate to the reaction kettle and stir at 30 °C for 30 minutes.

[0041] 2. Add zinc oxide and continue stirring for 10 minutes.

[0042] 3. Mix and grind activated carbon and diatomaceous earth for 30 minutes.

[0043] 4. Heat and dissolve polyvinyl alcohol and glycerol in a 50 °C water bath.

[0044] 5. Add all components into a mixer and stir for 1 hour to make granular medicine.

[0045] As described above, it is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention shall be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A treatment agent for formaldehyde treatment, characterized in that: Comprising an active ingredient, an adsorbent, and a stabilizer: Active ingredient: 30 - 50% amino compound, 10 - 20% oxidant, 5 - 10% catalyst, the balance being water; Adsorbent: 20 - 30% activated carbon, 10 - 15% diatomaceous earth, the balance being water; Stabilizer: 5 - 10% polyvinyl alcohol, 3 - 5% glycerol, the balance being water.

2. The treatment agent for formaldehyde treatment according to claim 1, characterized in that: The amino compound can chemically react with formaldehyde to form a stable hydroxymethyl derivative, and the amino compound includes urea, ethylenediamine, and triethanolamine. The oxidant can oxidize formaldehyde to formic acid or carbon dioxide and water, and the oxidant includes hydrogen peroxide and potassium permanganate. The catalyst can accelerate the decomposition and reaction of the oxidant, and the catalyst includes titanium dioxide and zinc oxide.

3. A preparation method of a treatment agent for formaldehyde treatment, characterized in that: It includes the preparation of the active ingredient, the preparation of the adsorbent, the preparation of the stabilizer, and the overall preparation of the medicament.

4. The preparation method of a treatment agent for formaldehyde treatment according to claim 3, characterized in that: The preparation steps of the active ingredient are specifically as follows: S1, Add the amino compound and the oxidant into a reaction kettle in proportion; S2, Stir at 20 - 30 °C for 30 minutes to make them fully mixed; S3, Add the catalyst and continue to stir for 10 minutes to form a homogeneous active ingredient mixture.

5. The preparation method of a treatment agent for formaldehyde treatment according to claim 3, characterized in that: The preparation of the adsorbent is specifically as follows: Mix the activated carbon and diatomaceous earth in proportion and grind them in a ball mill for 30 minutes to make their particles uniform, forming an adsorbent mixture.

6. The preparation method of a treatment agent for formaldehyde treatment according to claim 3, characterized in that: The preparation of the stabilizer is specifically as follows: Mix the polyvinyl alcohol and glycerol in proportion and heat and stir in a water bath at 50 °C until completely dissolved, forming a stabilizer mixture.

7. The preparation method of a treatment agent for formaldehyde treatment according to claim 3, characterized in that: The overall preparation of the medicament is specifically as follows: S1, Add the active ingredient mixture, the adsorbent mixture, and the stabilizer mixture into a mixer in proportion; S2, Stir at room temperature for 1 hour to make them fully mixed; S3, Then make the uniformly mixed medicament into powder or granular form through a spray drying device; S4, Package and store in the warehouse for standby.

8. The preparation method of a treatment agent for formaldehyde treatment according to claim 7, characterized in that: In S1, first mix the active ingredient evenly, then add the adsorbent, and finally add the stabilizer to ensure that each component is fully mixed.

9. The preparation method of a treatment agent for formaldehyde treatment according to claim 7, characterized in that: The stirring speed in S2 is controlled at 200 - 300 rpm, and the temperature during stirring is controlled at 20 - 30 °C.

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