c 14 chains and the second portion of paraffins 26 includes paraffins with c 18 to c 20 chains either or both paraffin portions 24 or 26 or other portions if more are present may thereafter be purified to remove trace contaminants resulting in a purified paraffin product in some embodiments wherein only paraffin production is desired the entire paraffin product i e all of the one or more portions may be purified at this stage in other embodiments some of the paraffin product is directed to further processing stages for the production of olefins in still other embodiments wherein only olefin production is desired the entire paraffin product i e all of the one or more portions may be directed to further processing stages as shown in the example embodiment illustrated in fig1 the second paraffin portion 26 is directed to a purification system 80 to remove trace contaminants such as oxygenates nitrogen compounds and sulfur compounds among others in one example purification system 80 is an adsorption system alternatively or additionally a pep unit 82 available from uop llc may be employed as part of purification system 80 subsequent to purification a purified paraffins stream 13 is removed from the system 10 as the paraffin product as further shown in fig1 the first portion of paraffins 24 i e that portion of linear paraffins directed for further processing to linear olefins where desired is introduced to a linear olefin production zone 28 specifically the first portion of paraffins 24 is fed into a dehydrogenation unit 30 in the olefin production zone 28 in the dehydrogenation unit 30 the.