Microcarbon residue

Recently, a newer method (Noel, 1984) has also been accepted (ASTM D-4530) that requires smaller sample amounts and was originally developed as a thermogravimetric method. The carbon residue produced by this method is often referred to as the microcarbon residue (MCR). Agreements between the data from the three methods are good, making it possible to interrelate all of the data from carbon residue tests (Long and Speight, 1989). 

Microcarbon residue the carbon residue determined using a themogravimetric method. See also Carbon residue. 

Figures 2 to 7 show PTOF s for the following reactions HDS, hydrodeasphalting (HDA), hydroderretallization (HDM), specifically hydrodev madization (HDV) and hydrodenickelization (HDNi), microcarbon residue conversion divided by total surface area in the reactor (HCR/A), and +525 C conversion divided by total surface area (+525/A) The HCR content of reaction product samples was used to calculate the fraction of +525°C material in the sample, using a correlation (ref, 5). Asphaltenes were measured by insolubility in n-pentane.

Figure 6 Microcarbon Residue Conversion per Unit of Catalyst Surface Area in the Reactor (wt%/m ) X 10 Versus Time on Stream (hours) symbols as given in Figure 2...

In the microcarbon residue test (ASTM D4530, IP 398), a weighed quantity of the sample placed in a glass vial is heated to 500°C (932°F) under an inert (nitrogen) atmosphere in a controlled manner for a specific time and the carbonaceous residue carbon residue (micro)] is reported as a percentage (% w/w) of the original sample. 

Figures 2 to 7 show PTOF s for the following reactions HDS, hydrodeasphalting (HDA), hydrodemetallization (HDM), specifically hydrodevanadization (HDV) and hydrodenickelization (HDNi), microcarbon residue...

Tests for Conradson carbon residue (ASTM D-189, IP 13), Ramsbottom carbon residue (ASTM D-524, IP 14), the microcarbon carbon residue (ASTM D4530, IP 398), and asphaltene content (ASTM D-893, ASTM D-2006, ASTM D-2007, ASTM D-3279, ASTM D-4124, ASTM D-6560, IP 143) are sometimes included in inspection data on petroleum. The data give an indication of the amount of coke that will be formed during thermal processes as well as an indication of the amount of high-boiling constituents in petroleum. 

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