Manual calculations with recycle streams

If a proprietary simulation program is not available, problems involving recycle streams can be solved on a spreadsheet using the procedure described below. 

The procedure is based on the theory of recycle processes published by Nagiev (1964). The concept of split-fractions is used to set up the set of simultaneous equations that define the material balance for the process. This method has also been used by Rosen (1962) and is described in detail in the book by Henley and Rosen (1969). 

---