Method of producing ethylene (di)chloride (EDC)
AssigneesVinnolit Technologie GmbH & Co. KG, Uhde GmbH
InventorMichael Benje
Life of this patent
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Abstract
With a method or a device for producing 1,2-dichloroethane or ethylene (di)chloride (EDC) with the use of a circulating reaction medium and a catalyst, whereby ethylene and chlorine are supplied to the reaction medium, the goal is to permit the catalytic chlorination of ethylene in a manner that is particularly gentle to the product. This is achieved in terms of the method and by other means in that the ethylene or chlorine gas are introduced into the reaction medium by means of microporous gas diffuser elements for producing gas bubbles with a diameter of 0.3 to 3 mm.
Claims6
A method of producing 1, 2-dichloroethane or ethylene (di)chloride (EDC) using a circulating reaction medium and a catalyst, whereby ethylene and chlorine are supplied to the reaction medium, comprising the steps of
- (a) introducing ethylene into the circulating reaction medium at a point upstream viewed in the direction of circulation of the reaction medium and, after passing the ethylene through a mixing and dissolving zone, completely dissolving the ethylene in the reaction medium stream;
- and
- (b) dissolving the chlorine in a cooled part stream of the reaction medium and subsequently supplying the chlorine to the main stream of the reaction medium further downstream;
- whereby the ethylene (di)chlorine liberated with the help of the reaction of chlorine and ethylene and evaporated by the reaction heat is discharged from the reactor vessel in the gaseous state, whereas the residual amount remaining in the evaporator vessel is recycled into the reaction zone.
Dependencies are inferred from the claim text.