Zeon Corporation

Hideaki Miki

Takahiro Suzuki

Yoshihide Yachi

Shiori Omori

Takashi Sasanuma

A hydrocarbon production method for producing hydrocarbons from a hydrocarbon mixture includes: a first extractive distillation step of performing extractive distillation of an extractive distillation target to obtain a fraction (A) in which isoprene and piperylene are enriched and a fraction (B) in which a linear hydrocarbon and a branched hydrocarbon are enriched; a first distillation step of obtaining a fraction (C) in which isoprene is enriched and a fraction (D) in which piperylene is enriched from the fraction (A); a dehydrogenation step of performing dehydrogenation or oxidative dehydrogenation of either or both of the linear hydrocarbon and the branched hydrocarbon contained in the fraction (B) to obtain a dehydrogenated product; and a recovery step of supplying the dehydrogenated product to an extractive distillation column or a distillation column and obtaining isoprene and/or piperylene from the dehydrogenated product.

Hydrocarbon production method and production apparatus

Provided is a separation membrane that is suitable for use in separating one or more hydrocarbons from a hydrocarbon mixture. More specifically, the separation membrane includes a porous support for which acid content is not substantially detected by ammonia temperature programmed desorption in a temperature range of higher than 450&#xb0; C. and not higher than 600&#xb0; C. and a porous separation layer containing a zeolite that is disposed on the porous support.

Separation membrane and method of producing separation membrane

A method for producing a hydrocarbon material from a Craffinate which is obtained as an extracted residual oil after separating at least part of the isoprene by extraction distillation from a Cfraction which is produced as a byproduct when thermally cracking naphtha to produce ethylene and has Corganic compounds as main ingredients comprising, a gas-phase thermal cracking step of gasifying the Craffinate to thermally crack at least part of the Cdiolefins which are contained in the gasified Craffinate, a desulfurization step, after the gas-phase thermal cracking step, of removing at least part of the sulfur-containing ingredients which are contained in the gasified Craffinate after the gas-phase thermal cracking step in the gas-phase state, and a hydrogen addition step, after the desulfurization step, of hydrogenating at least part of the carbon-carbon double bonds of at least one selected from diolefins and olefins which are contained in the gasified Craffinate after the desulfurization step in the gas-phase state, so as to obtain a hydrocarbon material with a total concentration of diolefins and olefins of 0.5 wt % or less is provided.

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Tokyo, Japan

Hideaki Miki