The light hydrocarbon recovery unit employs mature and reliable process technologies to centrally treat the sour gas and overhead gasoline from the four atmospheric–vacuum distillation units at the refinery. The dry-gas desulfurization section comprises a feed gas desulfurization tower, a methane stripping tower, a propane removal tower, a C4/C5 separation tower, an LPG desulfurization tower, a C2 absorption tower, a solvent regeneration tower, an absorption tower, a desorption tower, and a stabilization tower, covering both packed towers and tray towers—primarily tray towers. The principal internal components include metal random packing, liquid distributors, liquid collectors, packing support grids, packing grid supports, tray assemblies (floating valves, tray decks, downcomers, receiving trays, liquid seals, and associated support beams), oil collection drums, gas–liquid feed distributors and distribution pipes, as well as fasteners such as bolts, nuts, clamps, and washers.
● Main tower tray assemblies
(1) Single- and Double-Overflow Tray – Single-Overflow Tray/Double-Overflow Tray
(2) Combined导向浮阀
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