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Plant source humic acid long-acting slow-release urea fertilizer and production process thereof

A technology of humic acid urea and slow-release urea, which is applied in urea compound fertilizer, nitrogen fertilizer, fertilization device and other directions, can solve the problems of easy clogging of pipelines, great difference in use effect, excessive heavy metal content, etc., so as to improve the use effect and reduce the Heavy metal and impurity content, the effect of improving the long-acting sustained-release effect

Inactive Publication Date: 2019-03-26
石家庄农信生物科技集团有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (2) Due to the different sources of mineral humic acid raw materials and production and processing techniques, the content of fulvic acid in mineral humic acid varies greatly. Even if the humic acid and fulvic acid urea are marked with the same standard, The content of humic acid and fulvic acid is also very different, resulting in a great difference in the use effect
[0007] (3) The most serious problem with mineral-sourced humic acid is that the content of heavy metals exceeds the standard
Mineral humic acid urea produced from lignite, weathered lignite, peat and other mineral raw materials, due to the complex mineral composition of humic acid, will bring a certain amount of water-insoluble impurities such as ash, etc., during the production and use process In, especially in drip irrigation, it is easy to clog the pipe

Method used

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  • Plant source humic acid long-acting slow-release urea fertilizer and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like figure 1 As shown, this embodiment 1 provides a humic acid long-acting slow-release urea fertilizer comprising: plant-derived humic acid urea; the plant-derived humic acid urea is suitable for synthesis by reacting plant-derived humic acid and urea.

[0026] The humic acid long-acting slow-release urea fertilizer of the present embodiment 1 utilizes plant source humic acid and urea to react to synthesize plant source humic acid urea, improves the content of humic acid and fulvic acid in the plant source humic acid urea, Further, the long-acting slow-release effect of the urea fertilizer is improved, and at the same time, the content of heavy metals and impurities in the urea fertilizer can be reduced to improve the use effect.

[0027] As an optional embodiment of plant source humic acid urea.

[0028] The plant-derived humic acid urea can be prepared by ion-exchange complexation reaction and hydrogen bond association reaction, that is, the liquid raw material con...

Embodiment 2

[0043] On the basis of Example 1, this Example 2 provides a production process for a humic acid long-acting slow-release urea fertilizer, and the humic acid long-acting slow-release urea fertilizer is suitable for melting by plant source humic acid urea Granulation formation.

[0044] For the specific components and implementation process of the humic acid long-acting slow-release urea fertilizer, please refer to the relevant discussion in Example 1, and will not be repeated here.

Embodiment 3

[0046] (1) Put the urea aqueous solution with 75% urea content in the urine tank first, and control the temperature of the urine tank at 100-120°C, and then use the urine circulation pump to transfer the liquid raw material with 60% plant-source humic acid Circular addition, humic acid-urea ion exchange complexation reaction and hydrogen bond association reaction to generate plant-derived humic acid urea. Among them, the content of fulvic acid in plant source humic acid is 30%.

[0047] (2) The plant-derived humic acid urea is transported into the urine evaporation system by the urine pump, and then passes through the flash tank (flash evaporation process), the primary heating evaporator (primary evaporation process), and the secondary heating evaporator (secondary evaporation process). During the evaporation process, the temperature is controlled at 138±2°C), and the moisture is removed by evaporation, so that the moisture content in the molten humic acid urea is less than 0....

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Abstract

The invention belongs to the field of agricultural means of production, and particularly relates to a plant source humic acid long-acting slow-release urea fertilizer and a production process thereof.The plant source humic acid long-acting slow-release urea fertilizer is prepared from plant source humic acid urea; the plant source humic acid urea is suitable for the reactive synthesis of plant source humic acid and urea, the content of humic acid and fulvic acid in the plant source humic acid urea is improved, and the long-acting slow-release effect of the urea fertilizer is improved, meanwhile, the content of heavy metals and impurities in urea fertilizer can be further reduced, and the use effect is improved.

Description

technical field [0001] The invention relates to agricultural production materials, in particular to a plant source humic acid long-acting slow-release urea fertilizer and a production process thereof. Background technique [0002] Since humic acid urea can prolong the retention time of nitrogen in urea in the soil, prolong the fertilizer effect and play a slow-release role, it is widely used in long-acting slow-release urea. The existing humic acid long-acting slow-release urea is activated by mineral sources (lignite, weathered lignite, peat and other minerals) to obtain mineral source humic acid (generally the content of humic acid is 40-50%), and then after Complex reaction granulation with urea or spray coating production. [0003] Among the humic acid components, fulvic acid is the most active part of the humic acid components, which plays a major role in plant growth regulation and is a component that plays a major role in humic acid fertilizers. In addition, the wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05C9/00
CPCC05C9/005
Inventor 黄国华
Owner 石家庄农信生物科技集团有限公司
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