PTQ Q1 2025 Issue

27.2

Reactor & Tower Internals, Custom Fabrication Solutions at Your Service.

11.1

Cycle time increased by, hrs

Figure 4 Adsorption time increases

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commitment towards net zero with the ‘Panchamrit’ goals. While India has committed to achieving net-zero emissions by 2070, its major players in the oil and gas sector have set their own goal of meeting net zero well ahead of the national target. It is expected that emissions will increase in the short term on account of business growth. However, scalable decarbonisation solutions are to be adopted at an accelerated pace to align with the net-zero mission. Figure 4 illustrates that an implementation of a dew point demand controller can lead to a power saving of 11-27%, with an increase in tower changeover time from one hour to three hours. These power savings would reduce the overall power requirement of the complex and subsequently result in less firing of fuel gas in the CPP. The decrease in fuel gas consumption in the firing of the CPP would subsequently reduce CO₂ emissions to the environment, in line with the decarbonisation policy of the Government of India. Considering these advantages, the ‘dew point demand control’ feature can be recommended for compliance in ‘no purge loss type dryers’ and HOC-type dryers in the instru - ment air dryer system. This article is based on a paper titled ‘Compressed air dryer-guidelines for selection and innovation’ published in Standards India Vol 5, March 1992 by Mr P. N. Misra. Subhosree Chakraborty is Assistant General Manager in EIL’s Process department. She has more than 16 years of experience in refinery and petrochemical configuration, utility and off-site system design, energy benchmarking, detailed and pre-feasibility studies, technology evalua- tion and licensor selection, and renewable energy. She has expertise in basic and detail engineering activities. Chakraborty holds a Bachelor’s degree in chemical engineering from Kolkata. Email: s.ghosh@eil.co.in A Natarajan is General Manager in EIL’s Static and Machinery Equipment Department and handles packaged equipment/items. He has more than 33 years of technical experience handling utility pack- ages/items for LNG plants, hydrocarbon refinery, and petrochemical projects, detail engineering for utility items, and layout preparation for utility packages. Natarajan holds a Bachelor’s degree in mechanical engineering from Madaras University, Chennai. Email: a.natarajan@eil.co.in

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