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US 2012/0160742 A1Published application
High Purity Heavy Normal Paraffins Utilizing Integrated Systems
AssigneeUop LLC
InventorsStephen W. Sohn, Andrea G. Bozzano, Jeffrey L. Pieper
Life of this patent
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Abstract
A process is presented for producing a purified normal paraffin product stream. The process includes passing a hydrocarbon stream having the desired normal paraffins to an adsorption separation system. A process stream generated from the separation system and having the normal paraffins is passed to an adsorption unit for the selective adsorption of aromatic compounds from the process stream, thereby producing a purified product.
Claims20
A process for producing a purified heavy normal paraffin, comprising:
- passing a hydrocarbon feedstream to a prefractionation unit, thereby generating a first stream comprising light ends, a second stream comprising heavy ends, and a third stream comprising the selected hydrocarbons;
- passing the third stream to a hydroprocessing unit, thereby creating a effluent stream having reduced contaminants;
- passing the effluent stream to an adsorption separation unit, thereby creating an extract stream comprising normal paraffins, and a raffinate stream comprising non-normal hydrocarbons and desorbent;
- and
- passing the extract stream to an aromatics adsorbent unit for selective adsorption of aromatics, thereby creating a process extract stream having heavy aromatic content of less than 0.5 wt %.
2 more elements
A process for producing a purified heavy normal paraffin, comprising:
- passing a hydrocarbon feedstream to a prefractionation unit, thereby generating a first stream comprising light ends comprising hydrocarbons having 13 or less carbon atoms, a second stream comprising heavy ends comprising hydrocarbons having 18 or more carbon atoms, and a third stream comprising the selected hydrocarbons having from 14 to 17 carbon atoms;
- passing the third stream to a hydroprocessing unit, thereby creating a effluent stream having reduced contaminants, and partially hydrogenating aromatics;
- passing the effluent stream to an adsorption separation unit, thereby creating an extract stream comprising normal paraffins, and a raffinate stream comprising non-normal hydrocarbons;
- passing the extract stream to an on-line aromatics adsorbent unit for selective adsorption of aromatics in the C14 to C17 range, thereby creating a process extract stream having an aromatic content in the C14 to C17 range of less than 0.5 wt %;
- and
- passing the extract stream to an extract separation unit, thereby creating a purified heavy normal paraffin stream, and an overhead stream.
3 more elements
Dependencies are inferred from the claim text.