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whether or not the trays are sieve trays or another type of tray or packing.
The new column that incorporated energy efficiency improvements was started up when the existing column was shut down to replace sieve trays with high-efficiency distillation trays and optimize tray spacing for greater efficiency.
Replacement of sieve trays in three large distillation columns with high-efficiency distillation trays that improved the hydraulic profile and separation efficiency.