Absorption columns axial dispersion

Spray Columns. As in gas absorption, axial dispersion (backmixing) in the... [Pg.53]

The terms "number of stages N" and "height equivalent to a theoretical plate HETP" are used in chromatography however, their meanings are quite different in comparison to continuously operated countercurrent columns (absorption, extraction, rectification). Here, the column length or height must be sufficient to draw apart the bands of components or fractions. This reqnires favorable eqnUibria, certain retardation differences, and limited axial dispersion. [Pg.544]

Figure 8.1.16. Countercurrent gas absorption/stripping column with axial dispersion/diffitsion. (a) Operating lines and equilibrium curve, (b) Concentration profiles of gas and liquid phases along the tower length for gas absorption/stripping with (solid lines) or without...

The overall rate of mass transfer of adsorbate in the bed is affected by external transport from the bulk of the gas to the external surfaces of the adsorbent particles, axial dispersion and backmixing in the gas phase, and internal transport within the pores. External transport can be correlated by equations similar to those used for mass transfer in packed absorption columns, such as the Ranz-Marshall (1952) equation ... [Pg.1027]

Countercurrent gas absorption/stripping in a column with axial diffusion/dispersion... [Pg.699]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...