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Automated Stability Analyzer Benefits
The Automated Stability Analyzer manufactured by Zematra uses the latest fiber optic techniques to greatly improve
detection of the flocculation point and repeatability of the results. Because the unit is automatic, manpower requirements are minimal and repeatability is improved. Windows-based software performs all calculations. Data from previous runs may be easily accessed and processed using the supplied Dataview software.
Operating Principles
Asphaltenes consist of aromatic and naphthenic ring compounds, containing nitrogen, sulfur, and oxygen molecules, which exist in oil as a colloidal suspension. The asphaltenes in a sample of residual fuel oil become unstable after injection of a measured quantity of cetane. The point of instability (asphaltene flocculation point) is determined by measuring the reflection of light by the asphaltenes which have precipitated on the glass surface of an Optrode device. The stability reserve (P-value) is then automatically calculated on the basis of the measured quantity of cetane required to reach the point of instability. The significance of the stability parameter has been extended to residual products in refinery processes. The P-value of an oil sample provides information on stability and stability reserve required for refinery process (e.g., thermal cracking) control purposes.
Configuration
The Automated Stability Analyzer consists of the analyzer, Dosimat top units, reaction cells, fiber optical sensors, interface card, software for Windows, and a computer running Windows NT, 2000 Professional, or XP. The complete system is CE marked.
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