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14:15 Sep 14, 2007
This question was closed without grading. Reason: Other
English to Portuguese translations [PRO] Tech/Engineering - Petroleum Eng/Sci
English term or phrase:off-line bed
"...are installed opposed to four catalyst beds with the 2 X 2 configuration. This configuration is commonly referred to as a “merry-go-round” because when the off-line bed is swapped for the guard bed, the guard bed is then put into lead position. The spent lead bed is then taken off-line. Overall, this sequence results in more frequent swaps then the full spare configuration, but lower frequency of regeneration. Additionally, the catalyst life is less because it is on line for two-thirds of the time instead of half-time for the full spare configuration"