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Preparation method of special fertilizer for mung bean

A preparation method and technology of special fertilizer, applied in the application, nitrogen fertilizer, potash fertilizer and other directions, can solve the problems of low purity of potassium dihydrogen phosphate product, large introduction of potassium dihydrogen phosphate product, incompatible with the proportion of mung bean, etc., and achieve significant environmental protection value. and economic benefits, significant economic benefits, and quality assurance effects

Inactive Publication Date: 2015-01-21
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 present invention provides a preparation method of mung bean special fertilizer to solve the problem that the fertilizers used for planting mung bean are nitrogen fertilizers and organic fertilizers. Nutrient elements are not absorbed by mung bean and remain in the soil, changing the soil structure and causing technical problems of environmental pollution
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 the excessive crystallization of potassium dihydrogen phosphate will bring the potassium dihydrogen phosphate product a Enter a large amount of impurity, then make the technical problem that the purity of potassium dihydrogen phosphate product is lower

Method used

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  • Preparation method of special fertilizer for mung bean
  • Preparation method of special fertilizer for mung bean
  • Preparation method of special fertilizer for mung bean

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A method for preparing a special fertilizer for mung beans. Phosphoric acid and carbamide are added into the reactor at a molar ratio of 1.1:1 to mix, and then the temperature of the two mixtures is raised to 100°C at a temperature rise rate of 5°C / min, and the reaction is stirred for 120 minutes. , Then cool the temperature to 30°C at a rate of 3°C / min, and then centrifuge to obtain the urea phosphate intermediate; add the intermediate and alkaline potassium salt to the reaction kettle at a molar ratio of 1:1.9 to mix and react, adjust The pH value of the reaction was 10, and the reaction was stirred for 60 minutes at a stirring speed of 200r / min. After the reaction, a slurry containing nitrogen, phosphorus and potassium was obtained. The slurry was placed in a cooling crystallizer for cyclic crystallization treatment, and the filtrate was detected and analyzed. When the molar ratio of nitrogen, phosphorus, and potassium in the filtrate is 2.5:0.4:1.3, stop crystallizati...

Embodiment 2

[0043] A method for preparing a special fertilizer for mung beans. Phosphoric acid and carbamide are added to the reactor at a molar ratio of 1.3:1 and mixed, and then the temperature of the two mixtures is raised to 120°C at a heating rate of 5°C / min, and the reaction is stirred for 100min. , Then cool the temperature to 45°C at a rate of 3°C / min, and then centrifuge to obtain the urea phosphate intermediate; add the intermediate and alkaline potassium salt to the reaction kettle at a molar ratio of 1:2.1 to mix and react, adjust The pH of the reaction was 12, and the stirring speed was 250r / min. The reaction was stirred for 40 minutes. After the reaction, a slurry containing nitrogen, phosphorus and potassium was obtained. The slurry was placed in a cooling crystallizer for cyclic crystallization treatment, and the filtrate was detected and analyzed. When the molar ratio of nitrogen, phosphorus, and potassium in the filtrate is 3:0.6:1.5, stop crystallization and filter, and t...

Embodiment 3

[0045] A method for preparing a special fertilizer for mung beans. Phosphoric acid and carbamide are added into the reactor at a molar ratio of 1.2:1 and mixed, and then the temperature of the two mixtures is raised to 110°C at a temperature rise rate of 5°C / min, and the reaction is stirred for 110 minutes. , Then cool the temperature to 40°C at a rate of 3°C / min, and then centrifuge to obtain the urea phosphate intermediate; add the intermediate and alkaline potassium salt to the reaction kettle at a molar ratio of 1:2 to mix and react, adjust The pH value of the reaction was 10, the stirring speed was 220r / min, and the reaction was stirred for 50 minutes. After the reaction was over, a slurry containing nitrogen, phosphorus and potassium was obtained. The slurry was placed in a cooling crystallizer for cyclic crystallization treatment, and the filtrate was detected and analyzed. When the molar ratio of nitrogen, phosphorus, and potassium is 2.8:0.5:1.4, stop crystallization an...

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Abstract

The invention relates to the technical field of chemical engineering and particularly relates to a preparation method of a special fertilizer for mung bean. By making a study on nutrient elements absorbed during the growth of mung bean and analyzing the proportion of the nutrient elements needed during the growth of mung bean, an intermediate is prepared by virtue of reacting phosphoric acid with carbamide and then is reacted with alkaline potassium to prepare potassium dihydrogen phosphate; by controlling the nutrient content ratio of a filtrate during crystallization of potassium dihydrogen phosphate, trace elements are added into the filtrate obtained by separating potassium dihydrogen phosphate so as to prepare the special fertilizer for mung bean. By virtue of the method, the purity of potassium dihydrogen phosphate is improved, the special fertilizer for mung bean is prepared by analyzing the ratio of the nutrient elements needed during the growth process of mung bean, the yield of mung bean is improved, no waste liquid is discharged during the production process and thus no environmental pollution is caused.

Description

Technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a method for preparing a special fertilizer for mung bean. Background technique [0002] Mung beans, also known as green beans, green beans, plant beans, etc. Its seeds and stems are widely eaten. Mung bean soup is a regular summer refreshing drink for families. It is a refreshing appetizer and is suitable for all ages. Traditional mung bean products include mung bean cake, mung bean wine, mung bean cake, mung bean paste, mung bean noodles and so on. Mung beans contain protein (mainly globulins), fat, carbohydrates, calcium, phosphorus, iron, vitamin A, B, and C. Phospholipid components include phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, phosphatidylglycerol, phosphatidylserine, and phosphatidic acid. Because of its rich nutrition, it can be used as bean porridge, bean rice, bean wine, food, glutinous food, or as bait cake, or sprouted as vege...

Claims

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Application Information

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IPC IPC(8): C05G1/00C05B7/00
CPCC05B7/00C05B17/00C05C9/00C05D1/00C05D9/00C05D9/02
Inventor 陈肖虎廖吉星高贵龙杨勇薛涛谢飞唐晓宁石磊赵伟毅李军旗
Owner GUIZHOU UNIV
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