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Epichlorohydrin EF

TECHNOLOGY FOR THE PRODUCTION OF EPICHLOROHYDRIN ECO-FRIENDLY epicholorohydrin ef


PROCESS FEATURES

Epichlorohydrin is a C3 organic epoxy compound, which combines the reactivity of an epoxy group (an oxygen bridge) with the additional reactivity of a chloro-group.
Epichlorohydrin undergoes a great variety of chemical reactions with many types of compounds. It is the major raw material for epoxy resins, which account for up to 75% of total output.
Thanks to its inherent versatility, it is used in a wide variety of other applications, including ion exchange resins, textiles, paper sizing, special inks and dyes, surface active agents, elastomers, plasticizers, agricultural products, liners, pharmaceuticals and many other applications.

CONSER, besides having secured in the past decades a leading position as licensor of the conventional epichlorohydrin process from propylene and chlorine, has recently developed and patented a new technology route, called ECH-EF (epichlorohydrin eco-friendly), to produce epichlorohydrin using glycerin and hydrogen chloride as raw materials.
The new ECH-EF technology shows that, thanks to the lower cost of the raw materials, to the lower plant investment cost, to the substantial reduction of energy consumption and of the aqueous and chlorinated by-products, it is the most effective route to produce epichlorohydrin.

REFERENCES

Company Location Capacity T/y Technology
S.I.R Italy  36000 Conventional
ALCLOR  Brasil  15000 Conventional
TECHCORP Iraq 10000 Conventional
HYCC S. Korea 20000 Conventional
TAMILNADU PETR. LTD India 10000 Conventional
SINOPEC-YUEYANG G.P.W. China 24000 Conventional
BLUESTAR NEW CHEMICAL MATERIALS China 30000 Conventional
TANGSHAN RISUN CHEMICAL Co. China 100000 Eco - Friendly

 

FLOW SHEET

EPICHLOROHYDRIN EF C156

 

PROCESS DESCRIPTION

CONSER epichlorohydrin process consists of the following main steps:

• Chlorohydrination of glycerin
• Dehydrochlorination of dichlorohydrins
• Epichlorohydrin purification

Chlohydrination of glycerin

Glycerol dichlorohydrins are produced by reaction of liquid glycerin with gaseous hydrogen chloride at moderate temperature and pressure and by using an organic acid catalyst.
The reaction occours through a two stages patented process, the first for the production of monochlorohydrins (MCH) and the second for the production of dichlorohydrins (DCH).
The reactor effluent enters the dichlorohydrin column, which separates under vacuum conditions DCH on top from MCH, heavy by-products and catalyst at bottom.

Dichlorohydrins hydrolysis

The hydrolysis of dichlorohydrins to epichlorohydrin, using caustic soda as saponifying agent, is accomplished in a distillation tower where epichlorohydrin is stripped by steam vaporized at the bottom of the tower.
Waste water is taken off from the bottom of stripper, while an organic phase, consisting od raw epichlorohydrin, is separated overhead.

Epichlorohydrin purification

The raw epichlorohydrin is rectified in a fractionation column system.
In the purification system high purity epichlorohydrin is separated from water and low and high boiling impurities.

 

PRODUCT APPLICATIONS

  

 

 

  


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