Marine hybrid desulfurization system and method

The invention relates to a desulfurization system, in particular to a marine hybrid desulfurization system and method, and belongs to the technical field of marine exhaust gas purification. The marinehybrid desulfurization system comprises an open desulfurization system taking seawater as an absorbent and a closed desulfurization system taking a base absorption liquid as an absorbent, and mainlycomprises a flue gas system, an absorption tower system, an alkali liquor preparation system and a washing water treatment system. According to the marine mixed desulfurization system provided by theinvention, the advantages of the open type desulfurization system and the closed type desulfurization system are effectively combined, the open type desulfurization system and the closed type desulfurization system can be freely switched, and up-to-standard emission of sulfur oxides in discharged flue gas is realized when a ship sails in different countries and different sea areas.