Study identifies optimum operating conditions for ULSD hydrotreaters

ULSD HYDROTREATING— ConclusionA recent study for a grassroots 30,000-b/sd hydrotreater that can produce ultra-low sulfur diesel (ULSD) helped assess the critical process design issues for meeting future ULSD requirements.Part 1 (OGJ, July 28, 2003, p. 50) of this two-part series discussed alternative process configurations for ULSD hydrotreaters with a discussion of key design parameters and metallurgical considerations for major pieces of equipment. Engineering aspects of hydrotreater design were covered, including a suitable operating pressure level that satisfies reaction conditions and the practical limits of piping mechanical design.Part 2 covers process simulations for a numbe...

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