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Water-retention slow-release urea fertilizer and production method thereof

A technology of slow-release urea, production method, applied in the direction of fertilizer mixture, fertilization device, application, etc., which can solve the problems of small production capacity, low performance, expensive farmland application, etc.

Inactive Publication Date: 2015-12-02
北京好收成全农生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the research and application of water-retaining and slow-release urea fertilizers in my country are developing rapidly, and the market demand is large, but the production capacity is small, and the products produced have few functions and low performance, which is manifested as high price for farmland applications.

Method used

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  • Water-retention slow-release urea fertilizer and production method thereof
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  • Water-retention slow-release urea fertilizer and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Embodiment 1: the preparation of water-retaining slow-release urea fertilizer of the present invention

[0085] The implementation steps of this embodiment are as follows:

[0086] A. Preparation of acrylic acid solution

[0087] Add acrylic acid to the neutralization kettle, then add water according to the mass ratio of acrylic acid to water as 1:1.10, stir and dissolve to obtain an acrylic acid aqueous solution;

[0088] B. Neutralization reaction

[0089] Add sodium bicarbonate neutralizing agent to the acrylic acid aqueous solution obtained in step A, the mass ratio of the acrylic acid in the acrylic acid aqueous solution to the neutralizing agent is 1:0.7, and stirring makes the neutralizing agent dissolve to obtain a kind of acrylate aqueous solution;

[0090] C. Add acrylamide

[0091] Adding acrylamide to the acrylate aqueous solution obtained in step B, the mass ratio of acrylic acid and acrylamide in the acrylate aqueous solution is 1:0.12, and then stirri...

Embodiment 2

[0097] Embodiment 2: the preparation of water retention slow-release urea fertilizer of the present invention

[0098] The implementation steps of this embodiment are as follows:

[0099] A. Preparation of sodium acrylate solution

[0100] Add sodium acrylate to the neutralization kettle, then add water according to the mass ratio of sodium acrylate to water as 1:1.00, stir and dissolve to obtain an aqueous sodium acrylate solution;

[0101] C. Add acrylamide

[0102] To the sodium acrylate aqueous solution obtained in step A, add crotonic acid amine, the mass ratio of the acrylic acid in the acrylic acid salt aqueous solution and crotonic acid amine is 1:0.10, then stir and dissolve, obtain a kind of acrylate and crotonamide co-polymer. mixed solution;

[0103] D. Polymerization

[0104] SAC-100 cross-linking agent is added to the acrylate and crotonamide mixed aqueous solution obtained in step C, and the amount of the cross-linking agent is 0.20% of the acrylic acid mass...

Embodiment 3

[0108] Embodiment 3: the preparation of water retention slow-release urea fertilizer of the present invention

[0109] The implementation steps of this embodiment are as follows:

[0110] A. Preparation of potassium acrylate solution

[0111] Add acrylic acid to the neutralization kettle, then add water according to the mass ratio of acrylic acid to water as 1:1.05, stir and dissolve, and obtain an acrylic acid aqueous solution;

[0112] B. Neutralization reaction

[0113] Add potassium bicarbonate neutralizer to the acrylic acid aqueous solution obtained in step A, the mass ratio of the acrylic acid in the acrylic acid aqueous solution to the potassium bicarbonate neutralizer is 1:0.5, and stirring makes the described neutralizer dissolve to obtain a an acrylate aqueous solution;

[0114] C. Add acrylamide

[0115] Adding acrylamide to the acrylate aqueous solution obtained in step B, the mass ratio of acrylic acid and acrylamide in the acrylate aqueous solution is 1:0.11...

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Abstract

The invention relates to water-retention slow-release urea fertilizer and a production method thereof. The production method comprises the steps of acrylic acid solution preparing, neutralization reaction performing, acrylamide adding, polymerization reaction performing, granulating and drying and the like. According to the water-retention slow-release urea fertilizer and the production method thereof, the water-retention slow-release urea fertilizer is safe, environmentally friendly, poisonless, odorless and free of any residual organic and inorganic harmful substances and does not pollute plants, soil, underground water and the like; soil moisture conservation and water saving are achieved, water evaporation can be effectively inhibited, water and soil loss is prevented, the water use efficiency can be increased by more than 20 percent, and the rainwater storage and retention capacity of the soil can be maximumly increased by more than 30 percent; the soil structure can be improved, and meanwhile the development of soil microorganisms can be facilitated.

Description

【Technical field】 [0001] The invention belongs to the technical field of fertilizer processing. More specifically, the present invention relates to a water-retaining slow-release urea fertilizer; the present invention also relates to a production method of the water-retaining slow-release urea fertilizer. 【Background technique】 [0002] Environmentally friendly and high-efficiency agricultural water-retaining slow-release urea fertilizer refers to a new type of multifunctional polymer composite material developed in response to the large use of water-retaining, water-saving and fertilizer-saving materials in agriculture, forestry, horticulture and other fields. Due to its unique water absorption , water retention, fertilizer retention and fertilizer retention properties, and have been widely used in agriculture, forestry and horticulture, desert control, farmland drought-resistant production, etc. For example, CN101113119A discloses a water-retaining slow-release urea fertil...

Claims

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Application Information

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IPC IPC(8): C05G3/00C08F220/06C08F220/56
Inventor 蔡典雄王璞李勇
Owner 北京好收成全农生物科技有限公司
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