PROCEDE DE DETERMINATION EN LIGNE ET EN TEMPS REEL DU DEGRE D'INSATURATION OLEFINIQUE DE L'ALIMENTATION ET DES PRODUITS OBTENUS LORS DE L'HYDROGENATION DE COUPES PETROLIERES LEGERES PAR ANALYSE SPECTROPHOTOMETRIQUE PROCHE INFRAROUGE

摘要

Method for on-line, real-time determination of characteristics such as the degree of olefin unsaturation of the supply and of the products obtained during hydrogenation of a light petroleum fraction in an hydrogenation unit, by means of a near-infrared spectrophotometer by measuring the absorbence in the spectral band from 12500 to 3840 cm<-1> (0.8 to 2.6 microns) and by selecting within this band a certain number of frequencies in order to establish statistical correlations with the desired characteristics and by directly calculating the values of the desired characteristics by applying a correlative relationship with the measured absorbence values A@.