FREMGANGSMAATE OG APPARAT FOR HYDROKARBONDAMPKRAKKING REGULERT VED NAERINFRAROEDANALYSE.

摘要

The present invention relates to a process for the production of olefins and diolefins, by reaction of cracking of hydrocarbons in a cracking tube disposed in a furnace. In particular, the method consists in carrying out several times during the reaction, a series of n measurements of absorbance of the hydrocarbons supplied to the cracking tube with the aid of a spectrophotometer at infrared wavelengths chosen in the near infrared range, of 0,8 to 2,6 microns, and as a function of the n results ri of the n measurements of the absorbance at least one condition of the reaction to a value v, which is determined in such a way that the productivity of one or more products of the reaction is equal to a desired value p which is fixed in advance. The present invention also relates to an apparatus for implementing this method.