Influence of entrainment on residual content of pollutants after absorber with sieve trays and wire demister

Entrainment is an important negative process that affects the efficiency of column units with a sieve trays. In sieve trays absorbers, entrainment leads to secondary contamination of the gas being purified by the reflux liquid. The sizes of entrainment droplets range widely from microns to millimeters and are the determining factor affecting the efficiency of demister. A review of studies on the flow rate and dispersion characteristics of entrainment removal from sieve trays is carried out, the research results are summarized in the form of a methodology for calculating the residual liquid content in gas after an absorber with a wire demister. In an absorber with cross-flow foam trays and a wire demister, there is an irreducible residual content of the reflux liquid, about several mg/m3, which practically does not change up to gas velocities of 1–1.5 m/s.