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Polypeptide chelated potassium zinc urea fertilizer and preparation method thereof

A technology for chelating potassium and polypeptide, which is applied in urea compound fertilizers, potassium fertilizers, inorganic fertilizers, etc. It can solve the problems of different fertilizer effects of polypeptide chelated potassium zinc urea fertilizers, low total nitrogen content of products, and excessive biuret , to achieve nutrient balance, improve effectiveness and reduce leaching loss

Inactive Publication Date: 2016-09-21
SHANXI LANHUA SCI TECH VENTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are prone to problems such as low total nitrogen content or moisture in the product, and biuret exceeding the standard.
And because of the different chelating agents, the fertilizer efficiency of the produced polypeptide chelated potassium zinc urea fertilizer is also different.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A polypeptide chelated potassium zinc urea fertilizer, using polyaspartic acid as a chelating agent, on the basis of traditional urea, adding 5 kg of polypeptide chelated potassium zinc stock solution per ton of urea, it is a new type of high-efficiency nitrogen fertilizer product.

[0023] The color of the polypeptide chelated potassium zinc urea fertilizer is white or light yellowish brown, the mass fraction of total nitrogen is ≥46.2‰, the mass fraction of biuret is ≤1.0%, the mass fraction of water is ≤1.5%, and the mass fraction of methylene biurea (calculated as HCHO) mass fraction ≤ 0.6%, particle size 2.0mm ~ 4.75mm mass fraction ≥ 90%, polypeptide chelated potassium content ≥ 0.08%, polypeptide chelated zinc content ≥ 0.11%.

[0024] The appearance of the raw material polypeptide chelated potassium zinc stock solution is dark brown, and crystals will be produced below 40°C. It is non-corrosive and does not react with urea below 230°C. The peptide chelating agent...

Embodiment 2

[0031] A polypeptide chelated potassium zinc urea fertilizer, using polyaspartic acid as a chelating agent, on the basis of traditional urea, adding 5 kg of polypeptide chelated potassium zinc stock solution per ton of urea, it is a new type of high-efficiency nitrogen fertilizer product.

[0032] The color of the polypeptide chelated potassium zinc urea fertilizer is white or light yellowish brown, the mass fraction of total nitrogen is ≥46.2‰, the mass fraction of biuret is ≤1.0%, the mass fraction of water is ≤1.5%, and the mass fraction of methylene biurea (calculated as HCHO) mass fraction ≤ 0.6%, particle size 2.0mm ~ 4.75mm mass fraction ≥ 90%, polypeptide chelated potassium content ≥ 0.08%, polypeptide chelated zinc content ≥ 0.11%.

[0033] The appearance of the raw material polypeptide chelated potassium zinc stock solution is dark brown, and crystals will be produced below 40°C. It is non-corrosive and does not react with urea below 230°C. The peptide chelating agent...

Embodiment 3

[0040] A polypeptide chelated potassium zinc urea fertilizer, using polyaspartic acid as a chelating agent, on the basis of traditional urea, adding 5 kg of polypeptide chelated potassium zinc stock solution per ton of urea, it is a new type of high-efficiency nitrogen fertilizer product.

[0041] The color of the polypeptide chelated potassium zinc urea fertilizer is white or light yellowish brown, the mass fraction of total nitrogen is ≥46.2‰, the mass fraction of biuret is ≤1.0%, the mass fraction of water is ≤1.5%, and the mass fraction of methylene biurea (calculated as HCHO) mass fraction ≤ 0.6%, particle size 2.0mm ~ 4.75mm mass fraction ≥ 90%, polypeptide chelated potassium content ≥ 0.08%, polypeptide chelated zinc content ≥ 0.11%.

[0042] The appearance of the raw material polypeptide chelated potassium zinc stock solution is dark brown, and crystals will be produced below 40°C. It is non-corrosive and does not react with urea below 230°C. The peptide chelating agent...

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Abstract

The invention provides a polypeptide chelated potassium zinc urea fertilizer and a preparation method thereof, and belongs to the technical field of fertilizer. The fertilizer uses poly-aspartic acid as a chelating agent, and adds 5 kg of polypeptide chelated potassium zinc stock solution into each ton of urea based on the traditional urea. The fertilizer is a novel high efficiency nitrogenous fertilizer, can supply nitrogen, potassium, zinc elements required by plant, can improve the rate of absorbtion and utilization of the plant for the nutrient elements in soil, can supply biological growth elements evenly, and has strong synergistic effect for the nitrogenous fertilizer, potash fertilizer, and phosphate fertilizer. The chelating agent can be biodegraded, and has no pollution for the plant and the soil. The polypeptide chelated potassium zinc stock solution and urea solution can pass two-stage conveying devices of urea solution pump and fusion pump in the preparation method, so that the mixture can be mixed uniformly, and the stability of the product quality can be guaranteed. The polypeptide chelated potassium zinc stock solution is added into the inlet of the urea solution pump, and the moisture of the product can be controlled effectively after performing primary evaporation, granulation and cooling.

Description

technical field [0001] The invention discloses a polypeptide chelated potassium-zinc urea fertilizer and a preparation method thereof, belonging to the technical field of fertilizers. Background technique [0002] The types of synergistic urea on the market are roughly divided into: inorganic salt urea, organic salt urea, amino acid urea, polypeptide urea, and polypeptide chelated salt urea. Polypeptide chelated salt urea is currently an emerging product, such as polypeptide chelated potassium containing zinc Urea, polypeptide chelated zinc urea, and polypeptide chelated potassium urea, because they contain trace elements, polypeptide amino acids and nitrogen elements required by plants, can be more absorbed by plants, improve the absorption effect of nutrients, and have high added value. Conforms to the national nitrogen fertilizer industry policy. Urea production enterprises use the aqueous solution circulation method to produce polypeptide chelated potassium urea by addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
CPCC05C9/00C05C9/02C05D1/00C05D9/02
Inventor 王有王霖潘光耀任玉兵潘普江赵志强郭子苇
Owner SHANXI LANHUA SCI TECH VENTURE
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