Hindustan Petroleum Corporation Limited (HPCL) has successfully commissioned the Residue Upgradation Facility (RUF) at its Visakh Refinery, marking a defining moment in India’s deep-conversion refining journey. This milestone significantly strengthens the country’s energy security while reinforcing HPCL’s position among the most technologically advanced refiners globally.
Advancing Aatmanirbhar Bharat Through Indigenous Engineering
Aligned with the Prime Minister’s vision of Aatmanirbhar Bharat, HPCL ensured that several critical equipment for the project were indigenously manufactured. This achievement not only enhances India’s refining self-reliance but also showcases domestic engineering and manufacturing capabilities at an unprecedented scale.
Notably, the facility houses three LC-Max reactors, each weighing approximately 2,200 metric tonnes—among the heaviest such reactors in the world—underscoring the project’s exceptional engineering complexity and scale.
High-Conversion Technology Unlocks Superior Product Yields
With a processing capacity of 3.55 million metric tonnes per annum (MMTPA), the RUF deploys advanced LC-Max–based residue hydrocracking technology. This enables conversion of nearly 93% of bottom oils into high-value products.
As a result, the Visakh Refinery can now enhance its distillate yield by up to 10% compared to pre-Visakh Refinery Modernization Project (VRMP) levels. This step-change in conversion efficiency significantly improves the refinery’s overall output quality and value.
Boosting Margins Through Feedstock Flexibility and Value Realisation
The commissioning of the RUF is set to substantially improve the Gross Refining Margins (GRMs) of the Visakh Refinery. Enhanced product slate, greater flexibility to process heavier and opportunity crudes, and higher value realisation per barrel collectively drive this improvement.
Moreover, the increased production of middle distillates allows HPCL to narrow the gap between its high-speed diesel (HSD) marketing and refining volumes. This reduces dependence on external sourcing, strengthens the supply chain, and improves profitability through better margin capture.
Energy Efficiency and Sustainability Gains
Alongside higher conversion and margins, the project delivers meaningful sustainability benefits. Improved heat integration and enhanced process efficiency have reduced the refinery’s Energy Intensity Index (EII), lowering operating costs while supporting HPCL’s environmental objectives.
At the same time, the Nelson Complexity Index of the Visakh Refinery has risen to an impressive 11.6, positioning it among India’s most advanced deep-conversion refineries and enabling global benchmarking of performance and long-term profitability.
Digital-First Operations with Industry-Leading AI Integration
Complementing the physical commissioning, HPCL has deployed the RUF (LC-Max) Digital Suite—an industry-first for Indian refineries. Embedded from start-up, the suite integrates real-time monitoring, predictive analytics powered by proprietary thermodynamic models, and AI-driven optimisation tools.
This digital backbone enables stable and efficient operation of the highly complex unit, ensuring higher on-stream factors, tighter yield control, and sustained margin enhancement over the long term.
Acknowledging Stakeholder Support
HPCL has expressed its deep gratitude to the Ministry of Petroleum & Natural Gas and other Ministries of the Government of India. It also thanked the Government of Andhra Pradesh and various statutory bodies for their guidance and continued support.
As per the press release, the company also places on record its sincere appreciation for project partners, licensors, vendors, contractors, and dedicated internal teams. Their technical excellence, collaborative spirit, and unwavering commitment were instrumental in the successful commissioning of the Residue Upgradation Facility.
