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US 2022/0017436 A1Published application
Separation of olefin components from a mixture of butanes and butenes using distillation and adsorbents
AssigneeSabic Global Technologies B.V.
InventorsMohammed ALDOSSARY, Mohammed Nadim SHAIK, Khalid A. AL-MAJNOUNI, Ahmed ALZENAIDI, Faizur RAHMAN, Arudra PALANI, Sachio ASAOKA, Mohammad Ahmed AL-YAMI, Uwais BADURUTHAMAL
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Abstract
Systems and methods for separating a mixture of olefinic and paraffinic C4 components are disclosed. The systems and methods include adsorptive equipment and adsorptive processes for separating components from the mixture.
Claims20
A method of recovering olefins from a C4 hydrocarbon mixture, the method comprising:
- fractionating the C4 hydrocarbon mixture in a first separation section to form (1) a first olefin stream comprising primarily 1-butene and isobutene collectively and (2) a first byproduct stream that comprises primarily cis-2-butene and trans-2-butene collectively;
- and
- separating the first olefin stream to form an isobutene stream comprising primarily isobutene and a 1-butene stream comprising primarily 1-butene via a second separation section, wherein the second separation section is adapted to separate hydrocarbon streams by adsorption.
A method of recovering olefins from a C4 hydrocarbon mixture, the method comprising:
- separating the C4 hydrocarbon mixture in an adsorber section to form (1) a first olefin stream that comprises primarily 1-butene and isobutene collectively and (2) a first byproduct stream that comprises primarily cis-2-butene, trans-2-butene, n-butane, and isobutane collectively;
- and
- separating the first olefin stream, via molecular sieves, into an isobutene stream comprising primarily isobutene and a 1-butene stream comprising primarily 1-butene.
Dependencies are inferred from the claim text.