Analysis of n-paraffins in light crudes: Molecular sieve and urea adduction techniques revisited

✍ Scribed by Chukwuemeka A. Nwadinigwe; Ifeyinwa O. Nwobodo

• Book ID: 103092664
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 507 KB
• Volume: 73
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(94)90024-8

✦ Synopsis

A bench technique for n-paraffin extraction using a molecular sieve, type 5A, is described. The comparative performances of molecular sieve and urea adduction techniques, with respect to the ranges and quantitative yields of n-paraffins extracted from two well-head crudes, coded Yorla 9L and Ughelli East, both native to Nigeria, were studied. Urea showed some advantage in the span of n-paraffins (n-C, to n-C,,) extracted over molecular sieves n-C, to n-C,, when whole crudes were considered. Investigation into the regeneration potential of the host for experimental reuse showed that up to 0.84f0.05 wt% urea could be lost per adduction-recrystallization cycle; while carefully programmed ramped heating to 500°C was necessary to regenerate the spent molecular sieve with losses of only 0.36f0.04 wt%.