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A clear liquid high-potassium liquid fertilizer and its special potassium solution

A solution and liquid technology, applied in the direction of liquid fertilizer, potash fertilizer, application, etc., can solve the problems of high cost of potassium and potassium content that cannot be popularized, and low potassium content can not be satisfied, etc., to achieve the effect of favorable crop absorption, low cost, and cost reduction

Active Publication Date: 2021-02-26
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing liquid water-soluble fertilizers have low potassium content and cannot meet the needs of crops that require high potassium, or high potassium content but high cost cannot be popularized

Method used

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  • A clear liquid high-potassium liquid fertilizer and its special potassium solution

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1: Preparation of potassium solution and clear liquid type high-potassium liquid fertilizer

[0050] 1. Preparation of Potassium Solution

[0051] Prepare potassium solution as follows:

[0052] Take 0.6kg potassium chloride (K 2 (2, 60%), commercially available agricultural grade) is dissolved in 3L tap water, adds 0.5kg citric acid (C 6 h 8 o 7 ·H 2 O, commercially available food grade) and 0.3kg potassium hydroxide (K 2 (2, 84%), commercially available technical grade) carry out acid-base neutralization reaction. After the reaction was completed, continue to add 0.5kg of citric acid and 0.3kg of potassium hydroxide to react, and carry out 3 neutralization reactions successively, adding 1.5kg of citric acid and 0.9kg of potassium hydroxide. The reacted liquid was cooled to room temperature to make 4.5 L containing K 2 The clear liquid potassium fertilizer solution of O 250g / L, this solution pH value is 5.2.

[0053] In this embodiment, the proporti...

Embodiment 2

[0058] Embodiment 2: preparation potassium solution and clear liquid type high-potassium liquid fertilizer

[0059] 1. Preparation of Potassium Solution

[0060] Prepare potassium solution as follows:

[0061] Get 0.75kg potassium chloride (K 2 (60%, commercially available agricultural grade) is dissolved in 3L tap water, adds 0.5kg citric acid (C 6 h 8 o 7 ·H 2 O, commercially available food grade) and 0.3kg potassium hydroxide (K 2 (84%, commercially available industrial grade) carries out acid-base neutralization reaction. After the reaction was completed, continue to add 0.5kg of citric acid and 0.3kg of potassium hydroxide to react, and carry out 3 neutralization reactions successively, adding 1.5kg of citric acid and 0.9kg of potassium hydroxide. The reacted liquid was cooled to room temperature to make 4.5 L containing K 2 The clear liquid potassium fertilizer solution of O 260g / L, this solution pH value is 5.3.

[0062] In this embodiment, the proportion of in...

Embodiment 3

[0067] Embodiment 3: preparation potassium solution and clear liquid type high-potassium liquid fertilizer

[0068] 1. Preparation of Potassium Solution

[0069] Prepare potassium solution as follows:

[0070] Get 0.6kg potassium nitrate (K 2 O 46%, N 14%, commercial agricultural grade) is dissolved in 3L tap water, adds 0.5kg citric acid (C 6 h 8 o 7 ·H 2 O, commercially available food grade) and 0.3kg potassium hydroxide (K 2 (84%, commercially available industrial grade) carries out acid-base neutralization reaction. After the reaction was completed, continue to add 0.5kg of citric acid and 0.3kg of potassium hydroxide to react, and carry out 3 neutralization reactions successively, adding 1.5kg of citric acid and 0.9kg of potassium hydroxide. The reacted liquid was cooled to room temperature to make 4.5 L containing K 2 O230g / L clear liquid potash fertilizer solution, this solution pH value is 5.1.

[0071] In this embodiment, the proportion of ingredients for pre...

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Abstract

The invention discloses clear liquid type high-potassium liquid fertilizer and a special potassium solution thereof. The potassium solution is a mixed liquid containing potassium nitrate and / or potassium chloride, potassium citrate and citric acid and is obtained through a neutralization reaction after citric acid and potassium hydroxide are added to a basic potassium solution prepared from water, potassium nitrate and / or potassium chloride. The clear liquid type high-potassium liquid fertilizer comprises (A) or (B) in parts by volume, wherein (A) comprises a urea ammonium nitrate solution, an ammonium polyphosphate solution and the potassium solution; (B) comprises the urea ammonium nitrate solution, the ammonium polyphosphate solution, the potassium solution and water. The content of potassium oxide in the potassium solution is high, no precipitation or crystallization is formed, and the potassium solution is resistant to temperature difference change; the potassium solution is slightly acidic, has good compatibility with ammonium polyphosphate and urea ammonium nitrate, has smaller influence on pH value of the mixed liquid fertilizer and is easy to use by adding pesticides or other fertilizer synergists. The liquid fertilizer contains organic potassium and inorganic potassium, facilitates absorption of crops and improves the quality. A process is simple, does not require heating and is environment-friendly and low-carbon.

Description

technical field [0001] The invention relates to a clear liquid high-potassium liquid fertilizer and a special potassium solution thereof, belonging to the technical field of liquid water-soluble fertilizers. Background technique [0002] Liquid fertilizer is one of the trends in the development of the chemical fertilizer industry in the world today. Liquid fertilizers in the United States have developed very rapidly since the 1980s and 1990s. By 2010, liquid fertilizers accounted for 31% of all fertilizer sales. So far, liquid fertilizers have accounted for more than 68% of total fertilizer consumption. The application of liquid fertilizer in Israel has reached 80-90%. Australia, France, Germany, Spain, Romania, etc. are all countries that use a large amount of liquid fertilizer. By 2018, the integrated application area of ​​water and fertilizer in my country will reach 80 million mu, and 5 million tons of water-soluble fertilizer will be needed. With the promotion of wate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G5/20
CPCC05B7/00C05C5/02C05G3/00C05G5/20C05D1/02C05F11/00C05C1/00C05C9/00
Inventor 杨俊刚孙焱鑫廖上强张琳李艳梅邹国元
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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