Friday, September 16, 2016

Deasphalting process using supercritical water



Type
Journal Article
Author
Leandro Lodi
Author
Viktor Oswaldo Cárdenas Concha
URL
Volume
34
Issue
11-12
Pages
1016-1020
Publication
Petroleum Science and Technology
Date
June 17, 2016
Abstract
Researchers examined the deasphalting process on laboratory scale through the design and development of a supercritical extraction experimental unit. The experimental unity used in tests is composed of a pump, an extractor with useful volume of 3 L and one separator vessel. Extractions in supercritical condition were conducted using vacuum residuum)as feedstock and water as solvent.
Temperature and pressure were manipulated to maintain the solvent in the required conditions, thus facilitating the extraction process and avoiding sharp changes in the system. In both phases, the products in the deasphalted oil stream present adequate characteristics for the production of lubricant oils and those in the asphalt residue stream present an elevated concentration of asphalt molecules.

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