HIGH-EFFICIENCY GRADIENT HIERARCHY COMPLEX DESULFURIZING TOWER

摘要

A high-efficiency gradient hierarchy complex desulfurizing tower comprises a tower body (17). The tower body (17) comprises an oxidization and crystallization stage, a coarse desulfurization and dedusting stage, a fine desulfurization and dedusting stage, and a horizontal demisting stage from the bottom up. The oxidization and crystallization stage comprises a pond and a separation mechanism (16) provided in the pond and separating the pond into an upper area and a lower area. The coarse desulfurization and dedusting stage comprises a gas distributing board (2) and a multi-layer spray layer (3) that are placed above a gas import (1), the spray layer (3) being in connection with the pond. The fine desulfurization and dedusting stage comprises a tube demister (5), a flushing layer (6), a film liquid holdup layer, a liquid holdup layer recycling can (12), the pH of slurry in the liquid holdup layer recycling can (12) being higher than the pH of slurry in the pond.