Rotameters in an Olefins Pyrolysis Furnace Replaced with Micro Motion R-Series Meters CHEMICAL RESULTS • $384,000 per year in production savings • $92,000 per year in maintenance savings • Payback in less than six months APPLICATION In an olefins pyrolysis furnace, a hydrocarbon feedstock/steam mixture is pumped through a maze of 4 to 6-inch ((DN800 to DN1000) diameter tubes where it is heated to 815-885°C (1500- 1600°F). During the cracking process, undesirable by-products, including methane and coke (carbon deposits), are produced. The objective of the process is to be as selective as possible towards Ethylene, making as much of that molecule as possible, while minimizing the production of by-products. Even with the best control schemes, coke is still produced and deposited

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