Preparation method of fertilizer special for bananas

A preparation method and technology for special fertilizers, applied in the application, fertilization device, fertilizer mixture, etc., can solve the problems of changing soil structure, not conforming to the proportion of bananas, and the introduction of potassium dihydrogen phosphate products, etc., to shorten the process flow, significantly The effect of economic value and significant environmental value

Inactive Publication Date: 2015-04-29
GUIZHOU UNIV +2
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  • Description
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Problems solved by technology

[0007] In view of this, the purpose of the present invention is to provide a compound method of special fertilizer for bananas, to solve the problem that the matching of nutrient elements in the existing fertilizers does not meet the ratio of bananas to the needs of nutrient elements, resulting in that the fertilizer applied to bananas is not used by bananas. Absorbed completely, some of the 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 potassium dihydrogen phosphate caused by incomplete crystallization of potassium dihydrogen phosphate in the process of preparing potassium dihydrogen phosphate products, and excessive crystallization of potassium dihydrogen phosphate will bring the potassium dihydrogen phosphate product into A large number of impurities, which in turn makes the technical problem of lower purity of the potassium dihydrogen phosphate product

Method used

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  • Preparation method of fertilizer special for bananas
  • Preparation method of fertilizer special for bananas
  • Preparation method of fertilizer special for bananas

Examples

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Effect test

Embodiment 1

[0041] A preparation method of special fertilizer for bananas. Phosphoric acid and carbonamide are added to the reactor at a molar ratio of 1.2:1 and mixed, then the temperature of the two mixtures is raised to 100°C at a heating rate of 3°C / min, and the reaction is stirred 150min, the temperature was cooled to 20°C and then centrifuged to obtain the intermediate; the intermediate and potassium hydroxide were mixed and reacted in the reactor at a molar ratio of 1:1.8, and the stirring speed was 220r / min to stir the reaction for 80min, and Regulate the pH value of reaction to be 10, after the reaction finishes, obtain the slurry containing nitrogen, phosphorus and potassium, place the slurry in the cooling crystallizer for circulation crystallization treatment, detect and analyze the filtrate simultaneously, when the nitrogen content in the filtrate is 3%, phosphorus When the potassium dihydrogen phosphate content is 0.5% and the potassium content is 9%, stop crystallization and...

Embodiment 2

[0043] A preparation method of special fertilizer for bananas. Phosphoric acid and carbonamide are added to the reactor at a molar ratio of 1.4:1 and mixed, and then the temperature of the two mixtures is raised to 130°C at a heating rate of 3°C / min, and the reaction is stirred. 180min, the temperature was cooled to 30°C and then centrifuged to obtain the intermediate; the intermediate and potassium hydroxide were mixed and reacted in the reactor at a molar ratio of 1:2, and the stirring speed was 240r / min for 60min, and Regulate the pH value of reaction to be 11, after the reaction finishes, obtain the slurry containing nitrogen, phosphorus and potassium, place the slurry in a cooling crystallizer for circulation crystallization treatment, detect and analyze the filtrate simultaneously, when the nitrogen content in the filtrate is 5%, phosphorus When the potassium dihydrogen phosphate content is 1.5% and the potassium content is 11%, stop crystallization and filter, and the ob...

Embodiment 3

[0045] A preparation method of special fertilizer for bananas, adding phosphoric acid and carbonamide into the reactor at a molar ratio of 1.3:1 and mixing them, then raising the temperature of the two mixtures to 120°C at a heating rate of 3°C / min, stirring and reacting 165min, the temperature was cooled to 25°C and then centrifuged to obtain the intermediate; the intermediate and potassium hydroxide were mixed and reacted in the reactor at a molar ratio of 1:1.9, and the stirring speed was 230r / min to stir the reaction for 70min, and Regulate the pH value of reaction to be 10.5, after the reaction finishes, obtain the slurry containing nitrogen, phosphorus and potassium, place the slurry in a cooling crystallizer for circulation crystallization treatment, detect and analyze the filtrate simultaneously, when the nitrogen content in the filtrate is 4%, phosphorus When the potassium dihydrogen phosphate content is 1% and the potassium content is 10%, stop crystallization and fil...

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Abstract

The invention relates to a chemical technology field, discloses a preparation method of a fertilizer special for bananas, and aims at solving the technical problems that the ratio of nutrient elements in an existing fertilizer cannot meet the requirement of the bananas on the nutrient elements in a growth process, little fertilizer applied to the bananas is absorbed and utilized, part of element compounds are remained in soil, the soil structure is changed, and the soil hardening is caused. According to the method, phosphoric acid and carbomite react to generate an intermediate, the intermediate reacts with alkaline potassium, part of generated monopotassium phosphate is seeded out, the contents of nitrogen, and phosphorus and potassium in reaction liquid are adjusted and can meet the growth requirement of the bananas; and the fertilizer special for the bananas is low in production cost, and no waste liquid discharge and environment pollution in a production process are caused.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for preparing a special fertilizer for bananas. Background technique [0002] Bananas are delicious, nutritious and harvestable year-round, and are also valued in temperate regions. China is one of the ancient countries that cultivate bananas in the world, and most of the banana varieties that are mainly planted abroad are passed down from China. Bananas are distributed in tropical and subtropical regions within 30° north and south latitudes of the east, west, and southern hemispheres. Chinese bananas are mainly distributed in Guangdong, Guangxi, Fujian, Taiwan, Yunnan and Hainan, and there are also a small amount of cultivation in Guizhou, Sichuan and Chongqing. Banana is a high-calorie fruit. According to analysis, the calorific value per 100 grams of pulp reaches 91 kcal. Bananas are also used as a staple food in some tropical regions. The nutritional va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/06
CPCC05B17/00
Inventor 陈肖虎廖吉星李军旗陈勇高贵龙廖川赵平原唐涛黄芳唐晓宁
Owner GUIZHOU UNIV
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