ABSTRACT
The presence of two phases, namely gas and liquid, is characteristic to noncatalytic or homogeneously catalyzed reaction systems. Components in the gas phase diffuse to the gas–liquid interface, dissolve in the liquid phase, and react with components in the bulk liquid phase. Gas–liquid reactions are used in several industrial processes. In the synthesis of chemical compounds, gas–liquid reactions are used in, for example, the oxidation of hydrocarbons. An important area where gas–liquid reactors are used is the cleaning of industrial gases. A low-concentration gas component is absorbed with the aid of a chemical reaction in the liquid phase. Several constructions are available for gas–liquid reactors because of the large number of different application areas. Two reactor types dominate in the synthesis of chemicals in the case of ga–liquid reactions: the tank reactor and the bubble column. A frequently used gas–liquid reactor is the bubble column.
