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Method for preparing nutritional fertilizer for apples

A nutrient fertilizer and apple technology, which is applied in the direction of fertilization device, fertilizer mixture, phosphate, etc., can solve the problems of non-compliance with apples, pollute the environment, and low absorption rate, and achieve significant environmental protection value, significant economic value, and low production cost. Effect

Inactive Publication Date: 2015-01-28
GUIZHOU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, the purpose of the present invention is to provide a method for preparing apple nutrient fertilizers to solve the problem that the matching of nutrient elements in the existing fertilizers does not meet the needs of apples for nutrient elements, resulting in a relatively low absorption rate of the applied fertilizers for apples. Low, some of these elemental compounds remain in the soil, changing the structure of the soil and polluting the environment
At the same time, it solves the waste of a large amount of ammonium dihydrogen phosphate caused by incomplete crystallization of ammonium dihydrogen phosphate in the process of preparing ammonium dihydrogen phosphate products, and the excessive crystallization of ammonium dihydrogen phosphate will bring the ammonium dihydrogen phosphate product A large number of impurities, which in turn makes the technical problem of lower purity of the ammonium dihydrogen phosphate product

Method used

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  • Method for preparing nutritional fertilizer for apples
  • Method for preparing nutritional fertilizer for apples
  • Method for preparing nutritional fertilizer for apples

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A method for preparing apple nutrient fertilizer, comprising the following steps:

[0040] (1) Preparation of intermediate: first add phosphoric acid to the synthesis tank, and raise the temperature of phosphoric acid to 100°C, then add carbonamide to the synthesis tank to make it react with phosphoric acid, after 200 minutes of reaction, cool down the temperature crystallize after reaching 20°C, and then centrifuge to obtain the intermediate, the molar ratio of phosphoric acid to carbonamide is 1.2:1;

[0041] (2) Preparation of ammonium dihydrogen phosphate: the intermediate obtained in step (1) is sent into the synthesis tank, and ammonia is added in the synthesis tank, the mol ratio of ammonia to the intermediate is 4:1, and the control reaction time is 40min , the reaction temperature is 25°C, the stirring speed is 200r / min to promote the reaction, and the pH value is adjusted to 8. After the reaction is completed, the obtained slurry is added to the cooling crysta...

Embodiment 2

[0046] A method for preparing apple nutrient fertilizer, comprising the following steps:

[0047] (1) Preparation of intermediate: first add phosphoric acid to the synthesis tank, and raise the temperature of phosphoric acid to 130°C, then add carbonamide to the synthesis tank to make it react with phosphoric acid, after 160 minutes of reaction, cool down the temperature crystallize after reaching 40°C, and then centrifuge to obtain the intermediate, the molar ratio of phosphoric acid to carbonamide is 1.4:1;

[0048] (2) Preparation of ammonium dihydrogen phosphate: the intermediate obtained in step (1) is sent into the synthesis tank, and ammonia is added in the synthesis tank, the mol ratio of ammonia to the intermediate is 6:1, and the control reaction time is 60min , stirring at a stirring speed of 200r / min to promote the reaction, the reaction temperature is 15°C, and the pH value is adjusted to 9. After the reaction is completed, the obtained slurry is added to the cool...

Embodiment 3

[0053] (1) Preparation of intermediates: first add phosphoric acid to the synthesis tank, and raise the temperature of phosphoric acid to 120°C, then add carbonamide to the synthesis tank to make it react with phosphoric acid, after 180 minutes of reaction, cool down the temperature crystallize after reaching 30°C, and then centrifuge to obtain the intermediate, the molar ratio of phosphoric acid to carbonamide is 1.3:1;

[0054] (2) Preparation of ammonium dihydrogen phosphate: the intermediate obtained in step (1) is sent into the synthesis tank, and ammonia is added in the synthesis tank, the mol ratio of ammonia to the intermediate is 5:1, and the control reaction time is 50min , the reaction temperature is 20°C, and the pH value is adjusted to 8.5, and the stirring speed is 200r / min to promote the reaction. When the mass ratio of nitrogen and phosphorus pentoxide in the filtrate was 13:6.5, the crystallization was stopped and filtered, and the obtained filter cake was dri...

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Abstract

The invention relates to the technical field of chemical industry, and discloses a method for preparing a nutritional fertilizer for apples. The method comprises the following steps: analyzing proportions of all nutritional elements required by the growth of apples by researching the amounts of absorption of all the nutritional elements from soil in the growth process of apples, reacting phosphoric acid with carbomite to generate an intermediate, introducing ammonia water into the intermediate to produce ammonium dihydrogen phosphate, crystallizing parts of ammonium dihydrogen phosphate to precipitate, and adjusting the content of nitrogen and phosphorus in a solution to meet the requirements of the growth of apples in order to prepare the nutritional fertilizer for apples. The preparation method has the advantages of full utilization of raw materials, no emission of waste liquids polluting environment, good quality of the prepared ammonium dihydrogen phosphate, and low cost of the prepared nutritional fertilizer for apples.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for preparing apple nutrition fertilizer. Background technique [0002] Apples belong to the Rosaceae family and are a low-calorie food that produces only 60 kcal per 100 grams. The nutrients in apples are highly soluble and easily absorbed by the human body, so they are called "living water", which is good for dissolving sulfur elements and smoothing the skin tender. There are also copper, iodine, manganese, zinc, potassium and other elements in apples. If the human body lacks these elements, the skin will be dry, cracked and itchy. Applying it to dark circles can help eliminate dark circles. Apples are rich in sugars, mainly sucrose, reducing sugar, protein, fat, phosphorus, iron, potassium and other substances; they also contain malic acid, quinic acid, Citric acid, tartaric acid, tannic acid, pectin, cellulose, B vitamins, vitamin C and trace elements edi...

Claims

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Application Information

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IPC IPC(8): C01B25/28C05G1/06
Inventor 陈肖虎廖吉星李军旗周勇何敏蔺忠建赵伟毅石磊古文全冉龙涛
Owner GUIZHOU UNIV
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