(9b) C2 Splitter Revamp with HiFi Plus Trays Part 1

Construction of a new polyethylene facility by NOVA Chemicals in the Sarnia, Canada area has driven the need for expanding the existing NOVA Corunna’s ethylene cracker capacity by about 50%. This expansion project was completed during the 2022 plant turnaround and involved significant scope on the 2 C2 Splitter towers operated at the site. The primary tower was partially re-trayed and equipped with an additional side reboiler. The second tower was fully re-trayed from 2 pass conventional trays to HiFi high-capacity trays. A side reboiler was added along with a second reboiler and overhead condenser. This paper discussed the design, installation, and operating strategy.