At Lavera, the steam cracker of naphtachimie (a 50/50 subsidiary of INEOS Olefins and Total Petrochemicals) is the first one over the world equipped with an on-line TOPNIR™ analysis of naphtha feedstock. The 26 furnaces of the plant produce more than 740,000 tpa of ethylene. The naphtha represents between 70 and 95% of the whole feedstock of the plant. Between 1991 and 2003, these furnaces were controlled by an in-house on-line process control model which was using 13 naphtha properties provided from TOPNIR™ on-line analyser to adjust in real time the furnaces operating conditions.
Thanks to the high level of accuracy of TOPNIR™ analysis linked to SPYRO® performances, the optimisation of steam cracker operations allows a substantial induced benefit in the range of 1-2 M$/year.
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