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Preparation method of iron glucoheptonate

A technology of glucoheptonate and gluconic acid, which is applied in the field of preparation of iron glucoheptonate, can solve the problems of inability to directly obtain high-purity iron glucoheptonate and difficult separation, and achieve simple and environmentally friendly preparation process and high reactivity , the effect of stable performance

Inactive Publication Date: 2020-02-11
上海永通生态工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing preparation method of ferric glucoheptonate is to prepare ferric glucoheptonate by chelating reaction between ferrous sulfate or ferric chloride and glucoheptonic acid, and the ferric glucoheptonate prepared by this method The accompanying by-products such as sodium sulfate or sodium chloride are difficult to separate from ferric glucoheptonate, and high-purity ferric glucoheptonate cannot be directly obtained, so it cannot be directly used in trace element fertilizer formulations

Method used

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  • Preparation method of iron glucoheptonate
  • Preparation method of iron glucoheptonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of gluconic acid aqueous solution:

[0027] Solid sodium glucoheptonate (for example, Wuhan Yuancheng Science and Technology Development Co., Ltd. industrial grade) is formulated into an aqueous solution with a mass percentage of 98%, and then passed through an activated large-pore strong acid cation exchange resin (for example, Shanghai Jinkai Resin Co., Ltd. Company D301) for ion exchange, after sufficient ion exchange, an aqueous solution of glucoheptononic acid with a mass percentage of about 30% is obtained.

[0028] (2) Preparation of ferric hydroxide:

[0029] React 320g of 10% ferrous sulfate aqueous solution with 100g of concentrated ammonia water to form a precipitate, let it stand for stratification, filter the reaction solution, wash the filter cake with deionized water for 2-3 times, blow in air to completely oxidize the filter cake It is reddish-brown powder, which is ferric hydroxide powder.

[0030] (3) Preparation of Iron Glucoheptonat...

Embodiment 2

[0033] (1) Preparation of gluconic acid aqueous solution:

[0034] Solid sodium glucoheptonate (for example, Wuhan Yuancheng Science and Technology Development Co., Ltd. industrial grade) is formulated into an aqueous solution with a mass percentage of 98%, and then passed through an activated large-pore strong acid cation exchange resin (for example, Shanghai Jinkai Resin Co., Ltd. Company D301) for ion exchange, after sufficient ion exchange, an aqueous solution of glucoheptononic acid with a mass percentage of about 30% is obtained.

[0035] (2) Preparation of ferric hydroxide:

[0036] React 320g of 10% ferrous sulfate aqueous solution with 100g of concentrated ammonia water to form a precipitate, let it stand for stratification, filter the reaction solution, wash the filter cake with deionized water for 2-3 times, blow in air to completely oxidize the filter cake to Reddish-brown powder is ferric hydroxide powder.

[0037] (3) Preparation of Iron Glucoheptonate

[0038...

Embodiment 3

[0040] (1) Preparation of gluconic acid aqueous solution:

[0041] Solid sodium glucoheptonate (for example, Wuhan Yuancheng Science and Technology Development Co., Ltd. industrial grade) is formulated into an aqueous solution with a mass percentage of 98%, and then passed through an activated large-pore strong acid cation exchange resin (for example, Shanghai Jinkai Resin Co., Ltd. Company D301) for ion exchange, after sufficient ion exchange, an aqueous solution of glucoheptononic acid with a mass percentage of about 30% is obtained.

[0042] (2) Preparation of ferric hydroxide:

[0043] React 320g of 10% ferrous sulfate aqueous solution with 100g of concentrated ammonia water to form a precipitate, let it stand for stratification, filter the reaction solution, wash the filter cake with deionized water for 2-3 times, blow in air to completely oxidize the filter cake It is reddish-brown powder, which is ferric hydroxide powder.

[0044] (3) Preparation of Iron Glucoheptonat...

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Abstract

The invention provides a preparation method of iron glucoheptonate. The preparation method comprises the following steps: (1) preparing an aqueous gluconic acid solution; (2) preparing ferric hydroxide; (3) putting the aqueous gluconic acid solution and the ferric hydroxide in a certain ratio into a reactor for a reaction, and terminating the reaction when a reaction solution becomes clear from turbid; and (4) carrying out evaporation concentration, crystallization, filtration and drying on the reaction solution obtained in the step (3) to obtain the solid iron glucoheptonate. The preparationmethod of the iron glucoheptonate provided by the invention is simple in steps and high in product yield; the prepared iron glucoheptonate is high in purity, good in water solubility and easy to absorb by crops; and byproducts such as sodium sulfate or sodium chloride are not generated.

Description

technical field [0001] The invention relates to a chelated trace element fertilizer, in particular to a preparation method of iron glucoheptonate. Background technique [0002] Iron is an indispensable micronutrient element for plants. Although iron is rich in soil, most of it exists as insoluble ferrous oxide, ferric oxide, or symbiosis of ferrous oxide and ferric oxide, so it cannot be absorbed by plants. At present, the common and effective way to correct iron deficiency in plants is to add iron sodium ethylenediaminetetraacetate (EDTA-Fe), sodium iron ethylenediamine di-o-hydroxyacetate (EDDHA-Fe) and other substances during fertilization. However, although the effectiveness of EDTA-Fe is good, it is not suitable for use in alkaline soils. EDDHA-Fe can be used in alkaline soils, but there are more or less sodium sulfate impurities in the produced EDDHA-Fe products, which directly leads to the failure of calcium and magnesium, an important nutrient element for plants. ...

Claims

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Application Information

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IPC IPC(8): C07C59/105C07C51/41
CPCC07C51/412C07C59/105
Inventor 石称华钱志红陈唐
Owner 上海永通生态工程股份有限公司
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