Micro Carbon Residue

Micro Carbon Residue, commonly known as "MCR" is a laboratory test used to determine the amount of carbonaceous residue formed after evaporation and pyrolysis of petroleum materials under certain conditions. The test is used to provide some indication of a material's coke-forming tendencies.[1][2][3] The test results are equivalent to the test results obtained from the Conradson Carbon Residue test.[1][4]

Test Method

A quantity of sample is weighed, placed in a glass vial, and heated to 500°C. Heating is performed in a controlled manner, for a specific period of time, and under an inert (nitrogen) atmosphere . The sample experiences coking reactions, with volatiles formed being swept away by the nitrogen. The carbonaceous residue remaining is reported as a mass percent of the original sample, and noted as “carbon residue (micro).” [1]

Special Considerations

Applications

Micro Carbon Residue offers the same range of applicability as the test to which it is equivalent, Conradson Carbon Residue. Advantages of MCR include better control of test conditions, smaller samples, and less operator attention.[1] Applications include:

See Also

References

  1. 1 2 3 4 5 6 7 ASTM. "Standard Test Method for Determination of Carbon Residue (Micro Method)". Retrieved 22 November 2015.
  2. 1 2 3 4 International Standards Organization. "ISO 10370:2014. Petroleum products -- Determination of carbon residue -- Micro method". Retrieved 28 November 2015.
  3. Stanhope-Seta. "Micro Carbon Residue Tester" (PDF). Retrieved 28 November 2015.
  4. Petroleum Analyzer Company, L.P. "Civilized Carbon Residue Analysis" (PDF). Retrieved 28 November 2015.
  5. 1 2 3 4 ASTM International. "Standard Test Method for Conradson Carbon Residue of Petroleum Products" (PDF).
  6. International Standards Organization. "ISO 10370:2014. Petroleum products -- Determination of carbon residue -- Micro method". Retrieved 28 November 2015.
  7. Colorado School of Mines. "Delayed Coking" (PDF). Retrieved 22 November 2015.
  8. Sadeghbeigi, Reza (2000). Fluid Catalytic Cracking Handbook: Design, Operation, and Troubleshooting of FCC Facilities. Gulf Professional Publishing. p. 52. ISBN 0884152898.


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