Coproduction method and coproduction system of glycine and iminodiacetic acid

A technology of iminodiacetic acid and iminodiacetonitrile, which is applied in the co-production method of glycine and iminodiacetic acid and its co-production system field, can solve the problem of increasing the production cost of iminodiacetonitrile, environmental pollution, and inability to be effectively utilized and other issues, to achieve the effect of low production cost, simple industrial implementation and high production efficiency
CN104817466BInactive Publication Date: 2017-05-31CHONGQING UNISPLENDOUR CHEM
1 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNISPLENDOUR CHEM
Publication Date
2017-05-31
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention particularly relates to a glycine and iminodiacetic acid cogeneration method and cogeneration system. The method includes the steps: performing alkaline hydrolysis and acidification for mixed liquor containing aminoacetonitrile and iminodiacetonitrile to obtain mixed liquor containing glycine and iminodiacetic acid salt; separating the mixed liquor containing the glycine and the iminodiacetic acid salt by continuous color spectra to respectively obtain glycine liquor and liquor containing the iminodiacetic acid salt. The glycine and iminodiacetic acid cogeneration system comprises a glycine production system unit and an iminodiacetic acid production system unit which are connected through the continuous color spectra jointly possessed by the two units. The glycine and iminodiacetic acid can be simultaneously separated and purified at high purity, by-products are avoided, product yield and purity are improved, and the method is high in production efficiency, simple to operate, green and environmentally friendly.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of production, separation and purification of organic compounds, and specifically relates to a co-production method of glycine and iminodiacetic acid and a co-production system thereof. Background technique

[0002] Glycine, also known as aminoacetic acid, is an important fine chemical synthesis intermediate, mainly used in the synthesis of pesticide glyphosate. At present, it has been widely used in medicine, food, chemical industry, pesticide and other fields. The food and pharmaceutical industries have gradually become the largest demand areas for the use of glycine, and its market demand is very large. In 2010, the global demand will be close to 1000kt. Iminodiacetic acid (IDA for short) is also known as bisglycine and aminodiacetic acid, and its molecular formula is NH(CH 2 COOH) 2 . Iminodiacetic acid is an important raw material and intermediate for pesticides, pharmaceuticals, rubber, surfactants...

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
Login to View More