A kind of preparation method of mung bean special fertilizer

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

Inactive Publication Date: 2016-08-31
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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  • A kind of preparation method of mung bean special fertilizer
  • A kind of preparation method of mung bean special fertilizer
  • A kind of preparation method of mung bean special fertilizer

Examples

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Effect test

Embodiment 1

[0041] A preparation method of mung bean special fertilizer, using phosphoric acid and carbonamide at a molar ratio of 1.1:1 to add to a reactor and mix them, then raise the temperature of the two mixtures to 100°C at a heating rate of 5°C / min, and stir for 120 minutes , then cool the temperature to 30°C at a speed of 3°C / min, and then centrifuge to obtain the urea phosphate intermediate; add the intermediate and basic potassium salt to the reactor at a molar ratio of 1:1.9 to mix and react, adjust The pH value of reaction is 10, is 200r / min stirring reaction 60min with stirring speed, after reaction finishes, obtains the slurry containing nitrogen phosphorus potassium, this slurry is placed in cooling crystallizer circulation crystallization treatment, detects and analyzes filtrate simultaneously, When the molar ratio of nitrogen, phosphorus, and potassium in the filtrate is 2.5:0.4:1.3, stop crystallization and filter, and the filter cake is a product of potassium dihydrogen ...

Embodiment 2

[0043] A preparation method of mung bean special fertilizer, using phosphoric acid and carbonamide at a molar ratio of 1.3:1 to add to a reactor and mix them, then raise the temperature of the two mixtures to 120°C at a heating rate of 5°C / min, and stir for 100 minutes , then cool the temperature to 45°C at a speed of 3°C / min, and then centrifuge to obtain the urea phosphate intermediate; add the intermediate and basic potassium salt to the reaction kettle at a molar ratio of 1:2.1 to mix and react, and adjust The pH value of reaction is 12, and stirring speed is 250r / min stirring reaction 40min, and after reaction finishes, obtains the slurry containing nitrogen, phosphorus and potassium, this slurry is placed in cooling crystallizer and circulates crystallization treatment, detects and analyzes filtrate simultaneously, when When the molar ratio of nitrogen, phosphorus, and potassium in the filtrate is 3:0.6:1.5, stop crystallization and filter, and the filter cake is potassiu...

Embodiment 3

[0045] A preparation method of mung bean special fertilizer, using phosphoric acid and carbonamide in a molar ratio of 1.2:1 to add to the reactor and mix them, then raise the temperature of the two mixtures to 110°C at a heating rate of 5°C / min, and stir for 110 minutes , and then cooled the temperature to 40°C at a speed of 3°C / min, and then centrifuged to obtain the urea phosphate intermediate; the intermediate and basic potassium salt were added to the reaction kettle at a molar ratio of 1:2 to mix and react, and adjusted The pH value of the reaction is 10, and the stirring speed is 220r / min stirring reaction for 50min. After the reaction finishes, obtain a slurry containing nitrogen, phosphorus and potassium, which is placed in a cooling crystallizer for circulation crystallization treatment, and simultaneously detects and analyzes the filtrate. When the filtrate When the molar ratio of nitrogen, phosphorus, and potassium is 2.8:0.5:1.4, stop crystallization and filter, 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 industry, in particular to a preparation method of mung bean special fertilizer. Background technique [0002] Mung beans, also known as green beans, Lu beans, plant beans and so on. Its seeds and stems are widely eaten. Mung bean soup is a summer drink that is often prepared by the family. It is refreshing and appetizing, suitable for all ages. Traditional mung bean products include mung bean cake, mung bean wine, mung bean cake, mung bean paste, mung bean vermicelli and so on. Mung beans contain protein (mainly globulins), fat, carbohydrates, calcium, phosphorus, iron, vitamins A, B, and C. Among the phospholipid components are 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, noodle food, or as bait and cake, or germ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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