11-01-2018 дата публикации
Номер: US20180010994A1
Принадлежит:
A device for continuous measurement of average molecular weight and polarity of a hydrocarbon stream. 1. An electronic system for continuous characterization of hydrocarbon average molecular weight and polarity (aromatic content) based on viscosity measured at two temperatures (40° C. and 100° C. ) and permittivity.2. The system of claim 1 , wherein average molecular weight is determined by a single continuous viscosity and continuous gravity measurements.3. The system of claim 1 , wherein average molecular weight is determined by multiple continuous viscosity and multiple continuous gravity measurements.4. The system of claim 1 , wherein average molecular weight determined by measurements at multiple temperatures.5. The system of claim 1 , wherein average molecular weight and aromatic content is used to determined characteristic of process unit feed stocks claim 1 , intermediates and products.6. The system of claim 1 , wherein average molecular and aromatic content may also be used to determine carbon to hydrogen ratio of hydrocarbons streams.7. The system of claim 1 , wherein average molecular and aromatic content may also be used to determine average boiling points of hydrocarbon and Watson K value.8. The system of claim 1 , wherein average molecular and aromatic content may also be used to predict reactivity and hydrogen consumption of the process feed.9. The system of claim 1 , wherein average molecular and aromatic content may also be used to calculate required heat input of the process unit.10. The system of claim 1 , wherein average molecular and aromatic content may also be used to calculate catalyst deactivation rate.11. The system of claim 1 , wherein average molecular and aromatic content may also be used to calculate target charge rates. Petroleum refinery process and utility units are very sensitive to changing characteristics of feed stocks. These changes can lead to process upsets which may damage the unit and cause products to fail specifications. ...
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