Mass Transfer and Chemical Reaction in a Turbulent Boundary Layer

Flue gas desulphurization based on limestone-gypsum with a novel wet-type PCF device

“…SO 2 was absorbed by limestone slurry. Limestone slurry prepared by mixing CaCO 3 of 25 m with tap water was stored in slurry tank (7). The circulating pump (8) was provided for the recirculation of the slurry, and the quantity of the slurry pumped into the absorber was adjusted by means of a valve (9).…”

“…The SO 2 transferring rate depends on a number of factors such as the solubility of SO 2 in the liquid and its displacement from equilibrium. Some models have been proposed to describe this transfer across the phase boundary [7,8]. A well-known mass-transfer theory, the two-film theory, assumes that there are two thin stagnant films on either side of the gas-liquid interface, and, all the resistance to mass-transfer is contained in the two films.…”

“…2. It consists of a preliminary treating chamber (4) and an inner cylinder (7). The air-SO 2 mixture first enters the preliminary treating chamber through the inlet tube (1) at the side-top of the absorber.…”

“…When the gas passes through the preliminary treating chamber, SO 2 gets preliminary purification by reacting with CaCO 3 in the absorbing liquid. Then, the gas goes through the self-excitation channels (5) and enters the inner cylinder (7). The inner cylinder is a cylinder with a diameter of 0.3 m and a height of 1.5 m. At the bottom of it, there is a conical selfexcitation chamber (6) where the rotary gas from self-excitation channels can impinge the liquid in slurry tank, and consequently lots of bubbles are produced, improving the secondary-purification effect for the gas.…”

Regimes of Mass Transfer With Chemical Reaction

“…Interpolation curves have been calculated, mainly for first-order reactions, by a number of authors (3, 7, 11,22,23,28,33,53,54). Interpolation curves have been calculated, mainly for first-order reactions, by a number of authors (3, 7, 11,22,23,28,33,53,54).…”