In a particular advantage we have found that some impurities such as chlorinated cyclic acetals have a boiling point greater than both EO and water, for example of 200° C., whereby they might be expected to reside in a waste water stream, but that they have a relative volatility between that of EO and water, whereby they may surprisingly be separated from the bottom and top streams by {HEAD ~ the side draw} of {TAIL ~ the invention} 
of
In a particular advantage we have found that some impurities such as chlorinated cyclic acetals have a boiling point greater than both EO and water , for example of 200 ° C. , whereby they might be expected to reside in a waste water stream , but that they have a relative volatility between that of EO and water , whereby they may surprisingly be separated from the bottom and top streams by { HEAD ~ the side draw } of { TAIL ~ the invention }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL