Production process for synthetizing EDDHA (Ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid) ferric-sodium complex) Ferrochel with one-step method

A production process, chelated iron technology, applied in the preparation of organic compounds, chemical instruments and methods, organic chemistry, etc., can solve the problems of unfavorable environmental protection, high production cost, long process, etc., and achieve low production cost and no pollution Effect of energy consumption and low energy consumption
CN102050753BInactive Publication Date: 2013-09-25SICHUAN TONGFENG TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN TONGFENG TECH
Publication Date
2013-09-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a production process for synthetizing EDDHA Ferrochel with a one-step method, comprising the following process steps of: weighing the following raw material components in the molar ratio: 1.0% of phenol, 0.4-0.6% of quadrol, 2.0-4.0% of sodium hydroxide, 0.8-1.2% of glyoxylic acid, 0.5% of iron ion and 20% of water; firstly, synthetizing EDDHA aqueous solution; then reacting with ferric salt to synthetizing EDDHA Ferrochel solution; and drying to finally obtain the EDDHA Ferrochel. The production process has the advantages of short process flow, high yield, low production cost, no pollution and low energy consumption and does not need organic solvent. The iron content of the EDDHA Ferrochel is more than 7%, when the EDDHA Ferrochel is dissolved in water, the content of the water insoluble is less than 0.1%, and EDDHA Ferrochel is stable when PH is between 3 and 10. The EDDHA Ferrochel is mainly used as fertilizer.
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Description

Technical field

[0001] The invention relates to a fertilizer synthesis process, in particular to a one-step production process for synthesizing EDDHA chelated iron. technical background

[0002] Iron, as one of the essential trace elements that affects plant growth and development, has been widely recognized. If fruit trees are deficient in iron, they will cause dwarf plants, shrunken stems, and white stripes and necrotic spots between leaf veins, resulting in yellowing of young tillers, complete yellowing and whitening of young leaves, and necrosis from top to bottom, seriously affecting the yield of fruit trees. , until death. On the other hand, although iron is abundant in soil, it is water-insoluble ferric oxide and has no activity. If ordinary inorganic iron salts are used, the ferrous iron ions are easily oxidized to ferric iron in soil with pH > 5, and eventually become inactive ferric oxide. EDDHA chelated iron (chemical name: ethylenediamine-N, N'hydroxyphenyl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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