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Production method of amino acid secondary element fertilizer

An amino acid and amino acid-based technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of few reports on medium-quantity element fertilizers, and achieve the effects of resource utilization, pollution control, and good circular economy

Inactive Publication Date: 2014-04-09
SICHUAN TONGFENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There have been some reports in the literature on the production of amino acid fert

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Embodiment 1 sulfuric acid hydrolysis method

[0017] Add 1 kg of dried and shredded feathers (chicken feather and duck feather mixture) into a 10L autoclave, add 3L of 30% sulfuric acid (relative density 1.22), heat up to 105-110°C with stirring after airtight, and maintain it for 8 hours , stop heating. After the reaction liquid is cooled, add calcium hydroxide (purity ≥ 90%) to the reaction liquid under stirring conditions to adjust the pH to 0.5-1, and then carry out vacuum filtration or pressure filtration after standing for 1 hour. The total amount of filter cake used is Wash with 0.5L sulfuric acid solution (pH=2-4) repeatedly and perform vacuum filtration or pressure filtration, and combine the filtrates obtained from the two filtrations for later use. Add 0.05 kg of magnesium hydroxide (purity ≥ 95%) and 0.66 kg of calcium hydroxide (purity ≥ 90%) to the filtrate while stirring, keep stirring for 20 minutes and then let it stand for 1 hour, then perform vacuum...

Example Embodiment

[0018] Embodiment 2 hydrochloric acid hydrolysis method

[0019] Add 1 kg of dried and shredded feathers (chicken feather and duck feather mixture) into a 10L autoclave, add 3L of 30% hydrochloric acid (relative density 1.15), raise the temperature to 105-110°C while stirring, and maintain it for 20 hours. Stop heating, after cooling to 95°C, open the valve to remove hydrochloric acid, draw out the gas and absorb it with water, when it is cooled below 50°C, add calcium hydroxide (purity ≥ 90%) to the reaction liquid under stirring conditions to adjust the pH to 0.5 -1, after standing for 1 hour, carry out vacuum filtration or pressure filtration, the filter cake is washed repeatedly with 0.5kg hydrochloric acid solution (pH=2-4) and then carry out vacuum filtration or pressure filtration, and combine the filtrates obtained from the two filtrations to wait use. Add 0.21 kg of magnesium hydroxide (purity ≥ 95%) and 0.55 kg of calcium hydroxide (purity ≥ 90%) to the filtrate to ...

Example Embodiment

[0020] Embodiment 3 peracetic acid hydrolysis method

[0021] Add 1 kg of dried and shredded feathers (chicken feather and duck feather mixture) into a 10L autoclave, add 3L of 2% peracetic acid, raise the temperature to 105-110°C while stirring, and maintain it for 12 hours. Stop heating, when cooled to below 50°C, filter under reduced pressure, wash the filter cake with 0.5kg acetic acid solution (pH=2-4) and repeat the reduced pressure filter or pressure filter, and combine the filtrate obtained from the two filters for later use . Add 0.06 kg of magnesium hydroxide (purity ≥ 95%) and 0.15 kg of calcium hydroxide (purity ≥ 90%) to the filtrate to obtain a clear solution, which is a solution containing amino acid chelated moderate elements. The solution is spray-dried to obtain 0.79 kg of amino acid-containing elemental fertilizer. Among them, the mass fraction of free amino acids was 13.6%, the mass fraction of Mg was 2.9%, the mass fraction of Ca was 9.6%, and the mass f...

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PUM

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Abstract

The invention discloses a production method of an amino acid secondary element fertilizer, and relates to the field of fertilizer production. The production method comprises the steps of adding an acid into animal feathers and raising temperature for hydrolysis to produce a mixed amino acid solution; then adding calcium oxide and magnesium oxide or calcium hydroxide and magnesium hydroxide into the mixed amino acid solution, and filtering to obtain a solution containing amino acid chelate secondary element; finally drying the solution to obtain the amino acid secondary element fertilizer. The production method disclosed by the invention realizes the resource utilization of waste, and has good cycle economy; the amino acid secondary element fertilizer prepared by the production method contains secondary elements of calcium and magnesium necessary for plant growth, also contains a large amount of nitrogen element necessary for plant growth, has the advantages of good water solubility, high secondary element content, good storage stability, quick plant absorption, high utilization rate of the fertilizer and the like, and has broad market prospect.

Description

technical field [0001] The invention relates to the field of chemical fertilizer production, in particular to a method for producing amino acid medium fertilizer. Background technique [0002] According to the classification of chemical fertilizers, nitrogen, phosphorus, and potassium are macronutrients; zinc, boron, manganese, molybdenum, copper, iron, etc. are microelements; calcium (Ca), magnesium (Mg), etc. are secondary elements. The lack of will cause physiological diseases of crops. The secondary elements are the nutrient elements that are required in the growth process of crops, which are inferior to the macronutrients and higher than the micronutrients. For example, Ca is an important element that constitutes the cell wall, and most of the Ca in plants is stored in the cell wall. When plants are deficient in Ca, the cell wall cannot be formed, the cells cannot divide normally, and the growth point will be necrotic. Ca can also adjust the physiological balance of ...

Claims

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Application Information

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IPC IPC(8): C05G1/00
Inventor 韩瑜陈琴王金梅许建光
Owner SICHUAN TONGFENG TECH
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