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A kind of preparation method of special fertilizer for juicy peach

A preparation method and special fertilizer technology, applied in the direction of chemical instruments and methods, applications, phosphate fertilizers, etc., can solve the problems of environmental pollution, low purity of ammonium dihydrogen phosphate products, low absorption rate, etc., and achieve significant economic value and environmental protection value , The effect of low production cost

Inactive Publication Date: 2017-02-08
GUIZHOU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the purpose of the present invention is to provide a preparation method of special fertilizer for peaches, to solve the problem that the matching of nutrient elements in existing fertilizers does not meet the needs of peaches for nutrient elements, resulting in the fertilizer applied to peaches being overwhelmed by honey. Peach has a low absorption rate, and some 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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  • A kind of preparation method of special fertilizer for juicy peach
  • A kind of preparation method of special fertilizer for juicy peach
  • A kind of preparation method of special fertilizer for juicy peach

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Embodiment 1

[0038] A preparation method of special fertilizer for juicy peach, comprising the steps of:

[0039] (1) Preparation of intermediates: first add phosphoric acid to the reaction kettle, and raise the temperature of phosphoric acid to 100°C, then add carbonamide to the reaction kettle to make it react with phosphoric acid, react for 190min, then cool down the temperature Crystallize after reaching 15°C, and then centrifuge to obtain the intermediate, the molar ratio of phosphoric acid to carbonamide is 1.2:1;

[0040] (2) Preparation of ammonium dihydrogen phosphate: the intermediate obtained in step (1) is sent into the reactor, and ammonia is passed into the reactor, and the mol ratio of ammonia to the intermediate is 1.8:1, and the reaction is controlled The time is 40min, the stirring speed is 200r / min, the reaction temperature is 15°C, and the pH value is adjusted to 8.5. After the reaction is completed, the obtained slurry is added to the cooling crystallizer to circulate ...

Embodiment 2

[0043] (1) Preparation of intermediates: first add phosphoric acid to the reaction kettle, and raise the temperature of phosphoric acid to 140°C, then add carbonamide to the reaction kettle to make it react with phosphoric acid, after 190 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 1.4:1;

[0044] (2) Preparation of ammonium dihydrogen phosphate: the intermediate obtained in step (1) is sent into the reactor, and ammonia gas is passed into the reactor, the mol ratio of ammonia gas to the intermediate is 2:1, and the reaction is controlled The time is 60min, the stirring speed is 200r / min, the reaction temperature is 25°C, and the pH value is adjusted to 9.5. After the reaction is completed, the obtained slurry is added to the cooling crystallizer to circulate crystallization, and the filtrate is detected and analyzed at the same time. When th...

Embodiment 3

[0047] (1) Preparation of intermediate: first add phosphoric acid to the reaction kettle, and raise the temperature of phosphoric acid to 120°C, then add carbonamide to the reaction kettle to make it react with phosphoric acid, after 180 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 13:1;

[0048] (2) Preparation of ammonium dihydrogen phosphate: the intermediate obtained in step (1) is sent into the reactor, and ammonia gas is passed into the reactor, the mol ratio of ammonia gas to the intermediate is 1.9:1, and the reaction is controlled The time is 50min, the reaction temperature is 20°C, and the pH value is adjusted to 9. After the reaction is completed, the obtained slurry is added to the cooling crystallizer to circulate crystallization, and the filtrate is detected and analyzed at the same time. When the mass ratio of nitrogen and phosph...

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Abstract

The invention relates to the technical field of chemical industry, and discloses a preparation method of a special fertilizer for honey peaches. The method comprises the following steps: analyzing the ratio of nutritional elements required by the growth of honey peaches by researching the amounts of absorption of all the nutritional elements from soil in the growth process of honey peaches, reacting phosphoric acid with carbomite to generate an intermediate, introducing ammonia gas into the intermediate to produce ammonium dihydrogen phosphate, crystallizing parts of ammonium dihydrogen phosphate to precipitate, adjusting the ratio of nutritional elements in a reaction solution to meet the growth of honey peaches, and adding other nutritional elements required by honey peaches in order to prepare the special fertilizer for honey peaches. The preparation method has the advantages of full utilization of raw materials, good quality of the prepared ammonium dihydrogen phosphate, and low cost of the prepared special fertilizer for honey peaches.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation method of special fertilizer for juicy peaches. Background technique [0002] Peach is a kind of spherical edible fruit. Peach has the functions of beautifying the skin, clearing the stomach, moistening the lungs, and eliminating phlegm. Its protein content is twice that of apples and grapes, and seven times that of pears; its iron content is three times that of apples, and five times that of pears. It is known as the "Queen of Fruits". There are many plants in our country. Rich in various vitamins, among which vitamin C is the highest. Peach trees are small deciduous trees with a general tree height of 3-4 meters. The dryness is weak and the canopy is open. Young trees grow vigorously, with branches reaching more than 1 meter in one year. The buds are precocious, and the crown forms quickly. It starts to bear fruit early, starts to bear fruit after ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00C05B7/00
CPCC01B25/305C05B7/00C05D9/02
Inventor 陈肖虎廖吉星李军旗喻茂高贵龙吴俊良薛涛苏涛曾舒陈双龙
Owner GUIZHOU UNIV