The invention relates to a ship
tail gas purification device and process for strengthening SO2 absorption and oxidation through segmented temperature self-adaptive precise regulation and control. Theship
tail gas purification device comprises a ship
tail gas purification
system and a gas-
liquid phase temperature regulation and
control system which are connected. The ship tail gas purification
system comprises a venturi
cooling tower, a U-shaped steam-water separation device, a condensation type dehumidification device, a
flue gas washing
tower, a liquid-liquid
heat exchanger, a circulating tank, a desulfurizing agent preparation and storage
system, a
seawater supply system and a washing
water treatment system. According to the invention, a process of
coupling the venturi
cooling tower with the
flue gas washing
tower is adopted, and rapid cooling is realized through turbulent flow reinforcement of venturi, so that on one hand, rapid washing removal of SO2 is realized, on the other hand, the condensation growth rate of SO3 is increased, the removal efficiency of SO3 is improved, and meanwhile, a basis can be provided for further removal of SO3 in the washing
tower; meanwhile, the
thermophoresis force between the washing liquid drops and the
carbon black particles can be improved, the capture of the
carbon black particles and PAH is remarkably enhanced, and the synergistic removal of SO2, SO3,
carbon black, PAH and the like is realized.