NOVELTY - Manufacture of ethylene derivative compound from bioethanol, involves subjecting feedstock comprising biomass-derived ethanol to dehydration promoting conditions to produce an olefins stream comprising ethylene; separating the olefins stream to form fraction containing most of the ethylene; dividing into slipstreams; forming dried ethylene-containing stream; and performing oxygenate removal step.    USE - For manufacture of ethylene derivative compound 1,2-dichloroethane (DCE) and optionally also another ethylene derivative compound such as vinyl chloride and polyvinyl chloride from bioethanol (claimed).    ADVANTAGE - The process utilizes a selective purification scheme to generate at least two ethylene-containing feedstreams derived from dehydration of bioethanol to form at least one ethylene derivative. The purification scheme is selective in that it comprises at least one purification step to generate one of the two feedstreams which is not performed to generate the other feedstream.    DETAILED DESCRIPTION - Manufacture of ethylene derivative compound from bioethanol, involves subjecting a feedstock comprising biomass-derived ethanol to dehydration promoting conditions to produce an olefins stream comprising ethylene; separating the olefins stream to form at least one fraction containing most of the ethylene (fraction A), the fraction A further comprising oxygenates and water; optionally, compressing at least a portion of fraction A to form a compressed stream A1; dividing the fraction A or the compressed stream A1 into a first slipstream B1 and a second slipstream B2; passing at least a portion of the slipstream B2 through a drying unit to form a dried ethylene-containing stream; performing an oxygenate removal step selected from removing at least a portion of oxygenates from the slipstream B2 before drying step; removing at least a portion of oxygenates from the dried ethylene-containing stream after drying step; and removing at least a portion of oxygenates from the slipstream B2 before drying step and removing another portion of oxygenates from the dried ethylene-containing stream after drying step, where the steps are effective in generating an ethylene-containing feedstream C2, which is leaner in water and oxygenates than slipstream B2; conveying the first slipstream B1 or its portion to a first reactor to convert ethylene to at least one first ethylene derivative and to generate a first product stream P1 comprising the formed first ethylene derivative; and conveying the ethylene-containing feedstream C2 or its portion to a second reactor to convert ethylene to at least one second ethylene derivative and to generate a second product stream P2 comprising the formed second ethylene derivative, where the second ethylene derivative formed is optionally the same as the first ethylene derivative formed.    DESCRIPTION OF DRAWING(S) - The figure shows a process flow diagram for manufacture of ethylene derivative.