Octane Upgrading of C-5/C-6 Light Naphtha by Layered Pressure Swing Adsorption

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Barcia, PS (Author) Other; Silva, JAC (Author) Other; Alírio Rodrigues (Author) FEUP

Journal

Title: Energy & Fuels

Vol. 24 No. 1

Pages: 5116-5130

ISSN: 0887-0624

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 11 Citations

ISI Web of Science

Scopus - 11 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Other information

Authenticus ID: P-003-385

DOI: 10.1021/ef100361e

Abstract (EN): The performance of a layered pressure swing adsorption (PSA) process for the separation of high research octane number (HRON) paraffins from a C-5/C-6 light naphtha fraction is simulated with a detailed, adiabatic single column PSA model. A zeolite 5A layer is used for selective adsorption of the low RON linear paraffins, while a zeolite beta-layer is used to separate the intermediate RON 3MP from the H RON fraction. The effects of various independent process variables (zeolite 5A to zeolite beta ratio, purge to feed ratio, cycle time, operating temperature, and depressurization mode) on the key dependent process variables (product RON, H RON species recovery, HRON purity, and adsorbent productivity) are evaluated. It is demonstrated that an optimal zeolite 5A to zeolite beta ratio can improve the product average RON up to 1.0 point as compared to existing processes using zeolite 5A only. Moreover, process simulations demonstrated that increasing the operating temperature from 523 to 543 K results in an octane gain of 0.2 RON.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15