Bureau of Mines Correlation Index Formula:
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Definition: Bureau of Mines Correlation Index (BMCI) number is defined as a number that is used to characterize the aromaticity of a crude oil.
Purpose: It helps petroleum engineers and chemists assess the quality and composition of crude oil samples.
The calculator uses the formula:
Where:
Explanation: The formula correlates temperature and specific gravity to estimate the aromatic content of petroleum fractions.
Details: BMCI is important for refinery operations as it helps predict yields of various petroleum products and assess processing characteristics.
Tips: Enter the temperature in Kelvin and specific gravity (default 0.82). Both values must be > 0.
Q1: What does a high BMCI number indicate?
A: Higher BMCI numbers indicate greater aromatic content in the petroleum fraction.
Q2: What's the typical range for BMCI numbers?
A: BMCI typically ranges from 0 to 100, with higher values indicating more aromatic content.
Q3: How is temperature measured for this calculation?
A: Temperature should be the average boiling point of the petroleum fraction in Kelvin.
Q4: What reference material is used for specific gravity?
A: Specific gravity is typically measured relative to water at 60°F (15.6°C).
Q5: Can BMCI be used for all petroleum products?
A: BMCI is most useful for middle distillates and heavier fractions, not for light ends like gasoline.