28-05-2015 дата публикации
Номер: WO2015076427A1
Автор:
YOUN, Min Hye,
OH, Jae Eun,
KIM, Mi Jin,
PARK, Se Ho,
SONG, Bo Guen,
SEO, Yeong Jeong,
MIN, Hyung Ki,
CHO, Joung Mo
Принадлежит:
Disclosed is an integrated upgrading method wherein light olefins, such as ethylene and propylene, are efficiently prepared by economically collecting isoprene, piperylene, and cyclopentadiene, which are olefins useful in C5 mixed fractions generated after naphtha cracking, and decomposing the residual fractions through catalytic contact. The present invention provides a method for preparing olefins with 2 to 5 carbon atoms, the method comprising the steps of: from C5 mixed fractions generated after naphtha cracking, (a) performing extractive distillation using the C5 mixed fractions as raw materials, to separate the C5 mixed fractions into a first stream including a paraffin compound and a second stream including a diene compound; (b) dimerizing cyclopentadiene included in the second stream to generate a third stream including dicyclopentadiene; (c) separating a fourth stream including dicyclopentadiene and piperylene and a fifth stream including isoprene from the third stream; (d) collecting ...
Подробнее
