Method for producing amino-acid-containing water-soluble fertilizer

A technology for water-soluble fertilizers and production methods, applied in the direction of inorganic fertilizers, calcium fertilizers, liquid fertilizers, etc., can solve the problem that DL-pyroglutamic acid cannot be directly applied to plants, etc., and achieves wide application range and high substrate conversion rate , the effect of mild reaction conditions

Inactive Publication Date: 2017-12-01
峨眉山市龙腾生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is: to solve the above-mentioned problem that DL-pyroglutamic acid cannot be directly applied to plants, the present invention provides a production method of amino acid-containing water-soluble fertilizer

Method used

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  • Method for producing amino-acid-containing water-soluble fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add DL-pyroglutamic acid to hydrochloric acid with a concentration of 10% in a weight ratio of 1:2, and add it to the reaction kettle, and seal the feeding port;

[0037] Turn on the steam to ensure that the steam pressure does not exceed 0.3Mpa, DL-pyroglutamic acid and hydrochloric acid are slightly boiled and hydrolyzed for 4 hours under the action of steam, and after the reaction is completed, put the hydrolyzate into the chelation tank;

[0038] Stir the hydrolyzate, and slowly add magnesium oxide with a content of 85% in the chelation tank, and its weight is 5% of the weight of DL-pyroglutamic acid;

[0039] Adding quicklime with a calcium content of 65% to the chelation tank to adjust the pH value of the hydrolyzate to 6.0;

[0040] Adjust the temperature in the chelation tank to 75-78°C, and keep it warm for 2 hours;

[0041] The plate and frame filter press is used to circulate and filter the chelated hydrolyzate until there is no visible foreign matter, and t...

Embodiment 2

[0044] Add DL-pyroglutamic acid to 10% hydrochloric acid in a weight ratio of 1:2 into the reaction kettle, and seal the feeding port;

[0045] Turn on the steam to ensure that the steam pressure does not exceed 0.3Mpa, DL-pyroglutamic acid and hydrochloric acid are slightly boiled and hydrolyzed for 4 hours under the action of steam, and after the reaction is completed, put the hydrolyzate into the chelation tank;

[0046] Stir the hydrolyzate, and slowly add magnesium oxide with a content of 85% in the chelation tank, and its weight is 8% of the weight of DL-pyroglutamic acid;

[0047] Adding quicklime with a calcium content of 65% to the chelation tank to adjust the pH value of the hydrolyzate to 6.3;

[0048] Adjust the temperature in the chelation tank to 79-82°C, and keep it warm for 2 hours;

[0049] The plate and frame filter press is used to circulate and filter the chelated hydrolyzate until there is no visible foreign matter, and the obtained filtrate is a water-so...

Embodiment 3

[0052] Add DL-pyroglutamic acid to 10% hydrochloric acid in a weight ratio of 1:2 into the reaction kettle, and seal the feeding port;

[0053] Turn on the steam to ensure that the steam pressure does not exceed 0.3Mpa, DL-pyroglutamic acid and hydrochloric acid are slightly boiled and hydrolyzed for 4 hours under the action of steam, and after the reaction is completed, put the hydrolyzate into the chelation tank;

[0054] Stir the hydrolyzate, and slowly add magnesium oxide with a content of 85% in the chelation tank, whose weight is 10% of the weight of DL-pyroglutamic acid;

[0055] Add unslaked lime in the chelating tank, adjust the pH value of hydrolyzate to be 6.5;

[0056] Adjust the temperature in the chelation tank to 81-84°C, and keep it warm for 2 hours;

[0057]The plate and frame filter press is used to circulate and filter the chelated hydrolyzate until there is no visible foreign matter, and the obtained filtrate is the amino acid-containing water-soluble fert...

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Abstract

The invention belongs to the technical field of fertilizer processing and in particular relates to a method for producing an amino-acid-containing water-soluble fertilizer. The method comprises the following steps: carrying out a hydrolysis reaction between DL-pyroglutamic acid and hydrochloric acid so as to produce hydrolysate containing glutamic acid; and adding magnesium oxide and calcium oxide for chelating and filtering, thereby obtaining the amino-acid-containing water-soluble fertilizer. According to the method disclosed by the invention, the amino-acid-containing water-soluble fertilizer is produced by taking the DL-pyroglutamic acid wastes as raw materials, a novel DL-pyroglutamic acid recycling pathway is provided, and the produced amino-acid-containing water-soluble fertilizer is a fertilizer which can be completely dissolved in water. The amino-acid-containing water-soluble fertilizer is comprehensive in nutrient elements and capable of being easily absorbed by crops, has the utilization rate of 90% or higher, can be widely applied to facility agriculture and green agriculture, and has significance on developing high-efficiency water-saving modern agriculture and promoting a water-fertilizer integrated technology.

Description

technical field [0001] The invention belongs to the technical field of fertilizer processing, and in particular relates to a production method of amino acid-containing water-soluble fertilizer. Background technique [0002] Amino acid-containing water-soluble fertilizer refers to the liquid or solid water-soluble fertilizer made of free amino acid as the main body, and adding appropriate amount of calcium and magnesium in the proportion required for plant growth. According to the added nutrients, it can be divided into medium element type and trace element type, and according to the product dosage form, it can be divided into powder and water. % (or 30g / L). [0003] Amino acid-containing water-soluble fertilizers mainly have the following uses: Glutamic acid-containing water-soluble fertilizers are a new generation of high-tech, multi-functional, and environmentally friendly fertilizers produced through biochelation. It rationally complexes a variety of nutrient elements i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05C11/00C05G3/00C05G5/23C05D3/02C05D5/00C05D9/00
Inventor 陈云
Owner 峨眉山市龙腾生物科技有限公司
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