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MEO Class II – EK-Motor : 2022/JUL/06 – 2022/OCT/04 – 2022/DEC/04 – 2024/MAR/03
Question

Q6. Selective catalytic Reactors (SCR) are being extensively used in marine diesel engines for the compliance of Tier-III NOx emission requirements. Explain various types of SCRs in use with particular focus on the following:-

a) High-Pressure SCRs (HPSCR) vs Low-Pressure SCRs (LPSCR)

b) SCRs with static mixers.

c) SCRs installed upstream the turbocharger(s) Vs downstream turbochargers.

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