Design of simple columns

DESIGN OF SIMPLE COLUMNS USING COLUMN PROFILE MAPS... 

Establish simple sequences. Using methods described in Chap. 5, sequences of simple columns with low overall vapor load are established. Consideration should not be restricted to the single sequence with the lowest overall vapor load, since many factors need to be considered in finally arriving at the best design. 

Evolving the Design of Simple Distillation Columns to Improve Heat Integration 447... 

It should be appreciated that this example is one of the few very simple practical cases of a packed column reactor. The removal of carbon dioxide by reaction is a step in many important industrial processes, e.g. the nitrification of natural gas and of hydrogen in the manufacture of ammonia. Most of these processes0 " use as the liquid absorbent a solution which can be regenerated, for example solutions of amines or potassium carbonate0", and the design of these columns is distinctly more complicated. 

It is easier to deal with a sequence of simple columns rather than a complex column with respect to understanding the process operations and the implications of design modifications to the process. 

Neutralization-extraction A common example of neutralization-extraction involves neutrahzation of residual acidity (or basicity) in a crude organic feed by injection of an aqueous base (or aqueous acid) combined with washing the resulting salts into water. The neutralization and washing operations may be combined within a single extraction column as illustrated in Fig. 15-13. Also see the discussion by Koolen [Design of Simple and Robust Process Plants (Wiley-VCH, 2001), pp. 159-161]. 

In this chapter the elementary hydrodynamic characteristics of simple bubble columns are summarized. Different designs of bubble columns are sketched, and examples of their industrial applications are outlined. An overview of the status on Eulerian bubble column modeling is presented. 

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