Revamping the extraction blocks in vacuum resid deasphalting units

Autor:	A. A. Rytsev, Zh. Yu. Gusakova, A. A. Osintsev, S. V. Kuznetsov, K. G. Ziganshin, O. A. Chekenev, S. Yu. Tvorogov, A. V. Pastukhov, A. L. Samoshkin, L. A. Ponyaev, S. P. Yanbaev, I. V. Pavlov, A. I. Elshin, G. K. Ziganshin
Rok vydání:	2007
Předmět:	Materials science General Chemical Engineering Metallurgy Extraction (chemistry) Reaction zone Energy Engineering and Power Technology Baffle General Chemistry Coke chemistry.chemical_compound Fuel Technology chemistry Propane Spray tower Tower
Zdroj:	Chemistry and Technology of Fuels and Oils. 43:17-21
ISSN:	1573-8310 0009-3092
DOI:	10.1007/s10553-007-0003-0
Popis:	0009-3092/07/4301–0017 © 2007 Springer Science+Business Media, Inc. Deasphalting of vacuum resid with liquefied propane is usually conducted in extraction towers of the gravity type. Standard towers (Fig. 1a) have a small (~7 m) height of the propane and vacuum resid reaction zone and are equipped with baffle trays that consist of metal trays 353 mm wide and 6 mm thick with a step of 68 mm positioned at a 45° angle. This design of the internals insignificantly increases the time the phases are held in the tower and causes formation of “coke” deposits, which are high-melting asphaltite, on the trays. The extraction tower with baffle trays is close to the spray tower in efficiency.
Databáze:	OpenAIRE
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