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Hard water-resistant potassium humate and preparation method and application thereof

A potassium humate and anti-hard water technology, applied in the direction of organic fertilizers, etc., can solve the problems of blocked pipe heads, difficult absorption of plants, difficulty in potassium humate, etc., and achieves the effect of easy operation

Pending Publication Date: 2019-02-15
宁夏天鑫源生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the prepared potassium humate is used as a foliar fertilizer for drip irrigation, calcium and magnesium ions in the water will flocculate, and the flocculated potassium humate will be in an insoluble state, which will block the pipe head or nozzle; in addition, the large amount of potassium humate The molecular structure makes it difficult for plants to absorb, which makes potassium humate a great difficulty in practical application

Method used

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preparation example Construction

[0023] The invention provides a kind of preparation method of anti-hard water potassium humate, comprising the following steps:

[0024] Activating after mixing lignite, water and an initiator to obtain an activated product, the initiator preferably includes one or more of potassium carbonate, potassium nitrate and potassium sulfate;

[0025] Mixing a halogenating agent with the activated product to perform an electrophilic addition reaction and an oxidation reaction to obtain an electrophilic addition reaction and an oxidation product;

[0026] mixing sulfite with the electrophilic addition reaction and the oxidation product to perform a nucleophilic substitution reaction to obtain a nucleophilic substitution reaction product;

[0027] The nucleophilic substitution reaction product is sequentially precipitated and dried to obtain hard water resistant potassium humate.

[0028] The invention mixes lignite, water and an initiator for activation to obtain an activated product, ...

Embodiment 1

[0044] Superfinely pulverize 10g lignite, pass through a 300 mesh sieve, mix with water and potassium carbonate at a mass ratio of 1:8:0.03, heat the mixture to 90°C for activation reaction, react for 1 hour, add lignite mass Sodium hypochlorite with a ratio of 0.1:1, after reacting for 2 hours, continue to add sodium sulfite with a mass ratio of 0.3:1 to lignite, after reacting for 2 hours, pump it into a precipitation tank, settling at 70°C for 3 hours, and pump it into the liquid tank of the dryer , At 125 ° C, after drum drying, the anti-hard water potassium humate product was obtained.

[0045] After testing, the fulvic acid content of hard water resistant potassium humate is 15.3%, the water insoluble matter is 0.91%, the humic acid content is 58%, and the hard water anti-flocculation time of 30 degrees is longer than 24h.

Embodiment 2

[0047] Superfinely pulverize 10g lignite, pass through a 300-mesh sieve, mix with water and potassium nitrate at a mass ratio of 1:6:0.04, heat the mixture to 85°C for activation reaction, and add lignite mass Potassium hypochlorite with a ratio of 0.2:1. After reacting for 3 hours, continue to add ammonium sulfite with a mass ratio of 0.5:1 to lignite. After reacting for 3 hours, pump it into a precipitation tank. Precipitate at 60°C for 3 hours and pump it to a dryer. In the liquid tank, at 120 ℃, after drum drying, the anti-hard water potassium humate product is obtained.

[0048] After testing, the fulvic acid content of hard water resistant potassium humate is 25.1%, the water insoluble matter is 0.75%, the humic acid content is 51%, and the hard water anti-flocculation time of 35 degrees is longer than 24h.

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Abstract

The invention provides hard water-resistant potassium humate and a preparation method and the application thereof and belongs to the field of preparation of potassium humate. The preparation method comprises the following steps: by taking brown coal as a raw material, adding an initiator to activate free ulmic acid and fulvic acid primarily; adding a halide and humic acid to carrying out an electrophilic addition reaction and an oxidizing reaction to generate small molecular weight humic acid, fatty chains and carboxylic acid substances with hard water resistance; adding sulfite for a nucleophilic substitution reaction; introducing sulphur to improve the hard resistance and water solubility of potassium humate; and preparing the hard water-resistant potassium humate by means of a two-stepsynthetic method. The preparation method provided by the invention is not involved in dangerous chemicals and high risk equipment in the production process, and is safe, pollution-free and easy to operate. The content of fulvic acid in the hard water-resistant potassium humate is 10-30%, and the hard water-resistant potassium humate is extremely high in hard water resistance and good in water solubility and has a very good application prospect in the field of agricultural chemical fertilizers.

Description

technical field [0001] The invention relates to the technical field of potassium humate preparation, in particular to a hard water resistant potassium humate and its preparation method and application. Background technique [0002] Potassium humate is a macromolecular organic weak acid potassium salt with multiple functions, which is made of weathered coal, peat and lignite as raw materials through special processing. Its structure is relatively complex. It is known that humic acid molecules contain benzene rings, condensed rings and some heterocycles (such as pyrrole, furan, indole, etc.), and there are bridges between the aromatic rings. There are various functional groups on the aromatic rings, mainly Carboxyl, phenol, hydroxyl, methoxy, quinone, etc. Potassium humate is jet-black crystal bright particles with metallic luster. It is non-toxic, odorless and non-corrosive. It is easily soluble in water. After dissolving in water, it becomes a black solution. It is weakly a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08H7/00C05F11/02
CPCC05F11/02C08H6/00
Inventor 刘建伟白义张旭昊白婷付梦璐张永飞杨雅丽殷春平陈向阳王凯樊洁马钰莹
Owner 宁夏天鑫源生物科技有限公司
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