Impinging Stream Absorption

1 ADAPTABILITY OF IMPINGING STREAMS FOR GAS-LIQUID REACTION SYSTEMS 

Absorption is another important unit operation process involved in the chemical, petrochemical, and a number of other processing industries. Since the discovery of the major effect of chemical reaction in promoting absorption, especially after the establishment of the systematical analysis method by Denckwerts [70], chemical absorption has been more widely applied industrially. It is clear that whenever an absorption treatment is needed in the processing industries, people always prefer where possible to employ chemical absorption. Of course, in the application of impinging streams in the area of absorption, what we are most concerned with is its application in chemical absorption too. This is the focal point of the discussion in this chapter. 

Chemical absorption is a kind of gas-liquid reaction and must involve transfer between phases, and thus is one of the important areas where, it is hoped, impinging streams can be applied successfully 

According to Denckwerts [70). the nature of a gas-liquid reaction system can be characterized by the parameter M, which is defined as  

Possible maximum rate of mass transfer through liquid film 

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In addition, Ponikarov et al. [112] studied more special impinging stream absorption equipment. It employs the flow configuration of rotating impinging streams and the impingement occurs in a collision chamber of half-circle form. This equipment appears to be of less practical interest and so will not be discussed further here. 

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