R. Bandyopadhyay
Haldor Topsoe, New Delhi, India
Dr. Rajarshi Bandyopadhyay is a Principal Scientist in the research and development (R&D) division of Haldor Topsoe where he works with process development of technologies related to the production of renewable diesel and jet fuel. He has more than 13 yr of experience in the chemical process industry, primarily in downstream refining and air separation units. He has handled various profiles ranging from operations, commissioning, detailed and basic engineering design, and technology development. He holds a BE degree from Jadavpur University, Kolkata, India, and a PhD from the Indian Institute of Technology Delhi, India—both in chemical engineering.
A diesel hydrotreater (DHT) is a critical unit within an oil refinery. A DHT processes the diesel range fractions obtained from different units of the refinery—such as from the crude distillation unit and the delayed coker unit—to adhere to diesel fuel market specifications.