A A MAY 2022 | Volume 101 Number 5 HydrocarbonProcessing.com SPECIAL FOCUS: BIOFUELS, ALTERNATIVE FUELS AND GREEN PETROCHEMICALS 21 Overview of decarbonization pathways for the oil and gas and petrochemical industries-Part 1 J. Buehler 29 MVR compressor key to steam energy upgrade at Terneuzen polyolefin plant U. Schmitz, P. Van Limmen and R. Waggeveld 33 Quickly screen catalysts for hydrotreating of vegetable oil using high-throughput micro-pilot plants T. Vilela 39 CO2 energy recycling approach in the petrochemical industries A. A. Ezzat DIGITAL TECHNOLOGY 43 Save energy and reduce CO2 of utilities networks S. Lodolo CARBON CAPTURE/CO2 49 CO2 K. Brun COLUMNS PROCESS OPTIMIZATION 53 Assessment protocol for nozzle loads on pressure vessels W. Stikvoort 59 Sensitivity analysis of a plug flow reactor K. Laturkar and K. Laturkar CATALYSTS 63 Hydroprocessing catalyst selection-Part 1: Planning and selecting the catalyst evaluation method N. Pongboot, T. Upienpong and W. Karunkeyoon 100TH ANNIVERSARY 67 History of the HPI 74 HP Flashback SUSTAINABILITY 77 Sustainable refinery of the future: Versatile, efficient and smart A. Kigel and G. Briskman PLANT TURNAROUNDS AND PROJECT MANAGEMENT 79 Managing complexity in engineering and construction projects J. Corrales and J. P. Veiga VALVES, PUMPS AND TURBOMACHINERY 83 Considerations for not providing a dedicated spare pressure-relief device P. K. Namilakonda HEAT TRANSFER 85 Preferential baffle reboiler-Part 2 A. Sharma N WATER MANAGEMENT 87 Bringing treatments to a boil T. Fagan, D. Wong and E. Ester 17 Circular Economy Innovative recycling, driving circularity while decarbonizing the petrochemical industry 19 Executive Viewpoint Maire Tecnimont and the second wave of the circular economy WEB EXCLUSIVE People Cover Image: Clariant's flagship commercial sunliquid® cellulosic ethanol plant in Romania. Photo courtesy of Clariant. 7 Editorial Comment Pathways towards a more sustainable HPI 15 Reliability Consider packaged twin-screw compressors MITIGATION compressor technology for a decarbonized energy economy emissions with closed-loop optimization 20 DEPARTMENTS 4 Industry Perspectives 8 Business Trends 90 Advertiser Index R N S Y IV E Rhttp://www.HydrocarbonProcessing.com