Patent ID: 6926809
Filing Date: 2005-08-09
Classification: C07D

Abstract:
1. A method for the production of cyanuric chloride, comprising trimerizing cyanogen chloride in a first unit which is a reactor unit, to produce a reaction gas stream containing gaseous cyanuric chloride and gaseous impurities, partially condensing the cyanuric chloride in the reaction gas stream produced in the first unit in a second unit, and desublimating and/or condensing gaseous cyanuric chloride from the second unit in a third unit, wherein the reaction gas stream from the first unit is fed into a lower area of the second unit, said second unit having a quenching column through which the gases rise, a condenser at an upper end to cool the gases from the quenching column passing into it and a discharge outlet at a lower end, determining the quantity of cyanuric chloride being discharged in the condensed state from the second unit and that which is drawn off in the gaseous state through the condenser of the second unit and setting the temperature of the condenser of the second unit so that more cyanuric chloride is drawn off in the gaseous state than is discharged in the condensed state at the bottom of the quenching column, the second unit arranged such that gaseous cyanuric chloride mixture which has been passed through the condenser area may be drawn off for desublimation and/or condensation in the third unit, the temperature of the condenser in the second unit being set at a value greater than the boiling point of the cyanuric chloride at ambient pressure, and wherein the temperature of the gases in the reaction gas stream fed into a lower area of the second unit is high enough to bring the mixture at the bottom of the quenching column to the boiling point.