Intelligent severity control stabilizes ethylene crackers

Honggang Wang, Zhenlei Wang, Hua Mei, Feng QianEast China University of Science and TechnologyShanghaiZhiwu TangSinopec Yangzi Petrochemical Co. Ltd.Nanjing, ChinaImplementation of intelligent severity control improved the operation of ethylene crackers in Sinopec's Nanjing 800,000 tonnes/year ethylene plant. The estimated quantifiable benefit is nearly $2.6 million/year, with payback period less than 6 weeks.The solutions have significantly reduced the fluctuation of the cracking severity and increased ease of operation. By reducing the variance of cracking severity by as much as 60%, the project improved the consistency of the furnace's yield slate, which in turn contributed to the stab...

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