Separation of iso-olefins from paraffins in the c19 to c22 range
AssigneeUop LLC
InventorsSanti Kulprathipanja, Stephen W. Sohn
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Abstract
A process is presented for the separation of iso-olefins from a hydrocarbon mixture comprising paraffins and olefins. The process includes an adsorption separation system, wherein the adsorbent is selected according to the properties of the material that is desired to be adsorbed. The process also includes a selection of a desorbent, which can comprise a mixture, to provide for an enhanced recovery of the adsorbed material and a separation of the iso-olefins from paraffins.
Claims20
A process for separating olefins from a hydrocarbon stream comprising:
- passing a hydrocarbon stream comprising C19 to C22 olefins and paraffins to an adsorption separation system, thereby creating an extract stream comprising iso-olefins and normal olefins, and a raffinate stream having a reduced iso-olefin and normal olefin content;
- wherein the adsorbent comprises an alkali substituted zeolite, and wherein the adsorption separation system uses a desorbent that comprises a naphthene or naphthene mixture.
A process for the production of long chained alkylbenzenes comprising:
- passing a hydrocarbon stream comprising C19 to C22 olefins and paraffins through an adsorption separation system, thereby generating an extract stream comprising C19 to C22 iso-olefins and a raffinate stream comprising paraffins, wherein the adsorbent in the adsorption separation system is a sodium based zeolite;
- passing the extract stream and a benzene stream to an alkylation reactor to generate an alkylbenzene process stream.
A process for separating olefins from a hydrocarbon stream, comprising:
- passing a feedstream to an adsorption separation system to selectively adsorb olefins, and to generate a raffinate stream having a reduced olefin content;
- and
- passing a desorbent to the adsorption separation system to displace the selectively adsorbed olefins to generate an extract stream comprising olefins;
- wherein the adsorbent in the adsorption separation system is a sodium substituted X zeolite, and wherein the desorbent is a naphthene.
Dependencies are inferred from the claim text.