Nitro-compound fertilizer anti-caking agent and preparation process thereof

Abstract

The invention relates to a nitro-compound fertilizer anti-caking agent and a preparation process thereof, and belongs to the technical field of compound fertilizer anti-caking agents. The anti-blocking agent is prepared from the following raw materials in parts by mass: 3.5 to 9 parts of fatty acid, 2.8 to 10.8 parts of fatty alcohol, 10 parts of a surfactant, 1 to 3 parts of dodecyl sulfonate, 5 to 10 parts of phosphate, 0.1 to 10 parts of polyamino acid, 1 to 5 parts of a nitrification inhibitor, 10 to 20 parts of polyacrylamide, 40 to 70 parts of vegetable oil and 20 to 40 parts of environment-friendly raw materials, wherein the lengths of carbon chains of the fatty acid and the fatty alcohol are 8-14. By adding the surfactant, the surface tension of the fertilizer can be effectively reduced, a hydrophobic film is formed on the surface of fertilizer particles, and the formation of crystal bridges among the particles is blocked, so that the fertilizer is prevented from caking; the environment-friendly raw materials have no pollution to soil, and the fertilizer can be prevented from being frozen for a long time; the effect of the compound fertilizer anti-blocking agent is long.

Description

Technical Field

[0001] The invention relates to a nitro compound fertilizer anti-caking agent and a preparation process thereof, belonging to the technical field of compound fertilizer anti-caking agents. Background Art

[0002] Compound fertilizer, as a comprehensive fertilizer, plays a vital role in modern agricultural production because it can provide multiple nutrients required for plant growth at the same time. This fertilizer combines major nutrients such as nitrogen, phosphorus, potassium, and possible trace elements such as sulfur, iron, zinc, copper, etc. through scientific proportions, allowing plants to absorb comprehensive nutrients at one time, thereby promoting the healthy growth of crops and increasing yields. Therefore, in the fertilizer industry, compound fertilizer occupies an irreplaceable position due to its high efficiency and convenience.

[0003] However, compound fertilizers are more likely to clump than single fertilizers during transportation and storage, which leads to poor quality and affects the sales of enterprises and the use of users. The caking problem not only brings difficulties to the storage, transportation and use of fertilizers, but also affects the fertilizer efficiency, reduces production efficiency and causes economic losses to enterprises. At present, the anti-caking agent for fertilizers has a short effective time, which is inconvenient to use for a long time and also affects the growth of crops to a certain extent. Summary of the invention

[0004] The purpose of the present invention is to provide a nitro compound fertilizer anti-caking agent and a preparation process thereof to solve the above problems.

[0005] In order to solve the above problems, the present invention provides a nitro compound fertilizer anti-caking agent and a preparation process thereof. The anti-caking agent comprises the following raw materials by weight: 3.5-9 parts of fatty acids, 2.8-10.8 parts of fatty alcohols, 10 parts of surfactants, 1-3 parts of dodecyl sulfonates, 5-10 parts of phosphates, 0.1-10 parts of polyamino acids, 1-5 parts of nitrification inhibitors, 10-20 parts of polyacrylamide, 40-70 parts of vegetable oils, and 20-40 parts of environmentally friendly raw materials; wherein the carbon chain lengths of the fatty acids and fatty alcohols are both 8-14.

[0006] Further: the surfactant type is hexadecyl dimethyl ammonium chloride or sodium fatty alcohol sulfate.

[0007] Further: the dodecyl sulfonate is one or more of potassium dodecyl sulfonate or sodium dodecyl sulfonate.

[0008] Further: the phosphate ester is one or more of primary phosphate ester, secondary phosphate ester, tertiary phosphate ester, and anionic phosphate ester.

[0009] Furthermore: the polyamino acid is one or more of polyglutamic acid, polylysine, polyserine and polyglycine.

[0010] Further: the nitrification inhibitor is dicyandiamide or 3,4-dimethylpyrazole phosphate.

[0011] Furthermore: the vegetable oil is one or more of palm oil, palm kernel oil, coconut oil, cottonseed oil, linseed oil, sesame oil, rice bran oil, walnut oil, grape seed oil, hazelnut oil, pumpkin seed oil, avocado oil, safflower seed oil, almond oil, and tea seed oil.

[0012] Furthermore: the environmentally friendly raw materials are inorganic minerals such as talcum powder.

[0013] The present invention also relates to a method for preparing the above-mentioned anti-caking agent for compound fertilizer, which comprises the steps of:

[0014] (1) Weigh the raw materials according to the ratio and set aside;

[0015] (2) mixing the fatty acid and the fatty alcohol and stirring them, and then placing them in a 60-80° C. environment to react for 2-3 hours to obtain a reactant A for use;

[0016] (3) The reactant A, surfactant, dodecyl sulfonate, phosphate, polyamino acid, nitrification inhibitor, polyacrylamide, vegetable oil, and environmentally friendly raw materials are mixed evenly, stirred, and the ambient temperature is adjusted to 70-90° C., and the compound fertilizer anti-caking agent is obtained after reacting for 4 hours.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The present invention can effectively reduce the surface tension of the fertilizer by adding a surfactant, form a hydrophobic film on the surface of the fertilizer particles, block the formation of crystal bridges between particles, and thus prevent the fertilizer from agglomerating;

[0019] Environmentally friendly raw materials do not pollute the soil and can keep the fertilizer from freezing for a long time;

[0020] The compound fertilizer anti-caking agent of the present invention has a long-lasting effect. The fatty acids and fatty alcohols with carbon chain lengths of 8 to 14 can be more evenly coated on the surface of the fertilizer. After being coated on the fertilizer, the fertilizer is placed for 3 to 6 months without any caking phenomenon. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The invention provides a nitro compound fertilizer anti-caking agent and a preparation process thereof. The anti-caking agent comprises the following raw materials by weight: 3.5-9 parts of fatty acid, 2.8-10.8 parts of fatty alcohol, 10 parts of surfactant, 1-3 parts of dodecyl sulfonate, 5-10 parts of phosphate, 0.1-10 parts of polyamino acid, 1-5 parts of nitrification inhibitor, 10-20 parts of polyacrylamide, 40-70 parts of vegetable oil, and 20-40 parts of environmentally friendly raw materials; wherein the carbon chain lengths of the fatty acid and the fatty alcohol are both 8-14;

[0023] The surfactant type is hexadecyl dimethyl ammonium chloride or sodium sulfate of fatty alcohol. These surfactants are compounded with oils and fats to effectively reduce the surface tension of fertilizers, form a hydrophobic film on the surface of fertilizer particles, block the formation of crystal bridges between particles, and thus prevent fertilizer agglomeration;

[0024] The dodecyl sulfonate is one or more of potassium dodecyl sulfonate or sodium dodecyl sulfonate, which has good surface activity and can reduce the surface tension of water. This property enables it to effectively reduce the adhesion between particles, thereby reducing the possibility of agglomeration, and by forming a thin film on the surface of the fertilizer particles, providing mechanical isolation and reducing direct contact between particles, thereby reducing the risk of agglomeration;

[0025] The phosphate ester is one or more of primary phosphate ester, secondary phosphate ester, tertiary phosphate ester and anionic phosphate ester. The phosphate ester has excellent surface activity, can improve the dispersibility and wettability of the anti-caking agent, and helps to evenly distribute the anti-caking agent on the surface of the fertilizer particles.

[0026] The polyamino acid is one or more of polyglutamic acid, polylysine, polyserine and polyglycine.

[0027] The nitrification inhibitor is dicyandiamide or 3,4-dimethylpyrazole phosphate, which can reduce fertilizer loss, improve fertilizer utilization, and reduce environmental pollution;

[0028] The vegetable oil is one or more of palm oil, palm kernel oil, coconut oil, cottonseed oil, linseed oil, sesame oil, rice bran oil, walnut oil, grape seed oil, hazelnut oil, pumpkin seed oil, avocado oil, safflower seed oil, almond oil, and tea seed oil, which helps to reduce friction between fertilizer particles, reduce the possibility of agglomeration, and reduce the adsorption force between particles, thereby reducing the risk of agglomeration;

[0029] Environmentally friendly raw materials are inorganic minerals such as talcum powder, which do not pollute the soil and keep the fertilizer from freezing for a long time.

[0030] The present invention also relates to a method for preparing the above-mentioned anti-caking agent for compound fertilizer, which comprises the steps of:

[0031] (1) Weigh the raw materials according to the ratio and set aside;

[0032] (2) mixing the fatty acid and the fatty alcohol and stirring them, and then placing them in a 60-80° C. environment to react for 2-3 hours to obtain a reactant A for use;

[0033] (3) The reactant A, surfactant, dodecyl sulfonate, phosphate, polyamino acid, nitrification inhibitor, polyacrylamide, vegetable oil, and environmentally friendly raw materials are mixed evenly, stirred, and the ambient temperature is adjusted to 70-90° C., and the compound fertilizer anti-caking agent is obtained after reacting for 4 hours.

[0034] The working principle of this application is:

[0035] The present invention can effectively reduce the surface tension of the fertilizer by adding a surfactant, form a hydrophobic film on the surface of the fertilizer particles, block the formation of crystal bridges between the particles, and thus prevent the fertilizer from agglomerating; the environmentally friendly raw materials have no pollution to the soil and can keep the fertilizer from freezing for a long time; the compound fertilizer anti-caking agent of the present invention has a long-lasting effect, and the fatty acids and fatty alcohols with carbon chain lengths of 8 to 14 are used to more evenly wrap the fertilizer surface, and after being coated on the fertilizer, the fertilizer is placed for 3 to 6 months without substantially agglomerating.

[0036] The present invention and its implementation methods are described above, and such description is not restrictive. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design structures and embodiments similar to the technical solution without creativity, which should all fall within the protection scope of the present invention.

Claims

1. A nitro-compound fertilizer anti-caking agent, characterized in that: The anti-caking agent comprises the following raw materials by weight: 3.5-9 parts of fatty acids, 2.8-10.8 parts of fatty alcohols, 10 parts of surfactants, 1-3 parts of dodecyl sulfonates, 5-10 parts of phosphates, 0.1-10 parts of polyamino acids, 1-5 parts of nitrification inhibitors, 10-20 parts of polyacrylamide, 40-70 parts of vegetable oils, and 20-40 parts of environmentally friendly raw materials; wherein the carbon chain lengths of the fatty acids and fatty alcohols are both 8-14.

2. A nitro-compound fertilizer anti-caking agent according to claim 1, characterized in that: The surfactant type is hexadecyl dimethyl ammonium chloride or sodium fatty alcohol sulfate.

3. A nitro-compound fertilizer anti-caking agent according to claim 1, characterized in that: The dodecyl sulfonate is one or more of potassium dodecyl sulfonate or sodium dodecyl sulfonate.

4. A nitro-compound fertilizer anti-caking agent according to claim 1, characterized in that: The phosphate ester is one or more of primary phosphate ester, secondary phosphate ester, tertiary phosphate ester and anionic phosphate ester.

5. A nitro-compound fertilizer anti-caking agent according to claim 1, characterized in that: The polyamino acid is one or more of polyglutamic acid, polylysine, polyserine and polyglycine.

6. A nitro-compound fertilizer anti-caking agent according to claim 1, characterized in that: The nitrification inhibitor is dicyandiamide or 3,4-dimethylpyrazole phosphate.

7. A nitro-compound fertilizer anti-caking agent according to claim 1, characterized in that: The vegetable oil is one or more of palm oil, palm kernel oil, coconut oil, cottonseed oil, linseed oil, sesame oil, rice bran oil, walnut oil, grape seed oil, hazelnut oil, pumpkin seed oil, avocado oil, safflower seed oil, almond oil, and tea seed oil.

8. A nitro-compound fertilizer anti-caking agent according to claim 1, characterized in that: The environmentally friendly raw materials are inorganic minerals such as talcum powder.

9. The method for preparing a nitro-compound fertilizer anti-caking agent according to any one of claims 1 to 8, characterized in that: It includes the steps of: (1) Weigh the raw materials according to the ratio and set aside; (2) mixing the fatty acid and the fatty alcohol and stirring them, and then placing them in a 60-80° C. environment to react for 2-3 hours to obtain a reactant A for use; (3) The reactant A, surfactant, dodecyl sulfonate, phosphate, polyamino acid, nitrification inhibitor, polyacrylamide, vegetable oil, and environmentally friendly raw materials are mixed evenly, stirred, and the ambient temperature is adjusted to 70-90° C., and the compound fertilizer anti-caking agent is obtained after reacting for 4 hours.