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Many of the test methods included in this standard were the subject of inter-laboratory testing to determine the applicability of the method and its precision in relation to 5.4.2 The limiting value for the carbon residue given in Table 1 is based on product prior to addition of ignition improver, if used. 5.1 The carbon residue value of the various petroleum materials serves as an approximation of the tendency of the material to form carbonaceous type deposits under degradation conditions similar to those used in the test method, and can be useful as a guide in manufacture of certain stocks. 3.2 Overview of Refinery processes. Primary crude oil cuts in a typical refinery include gases, light/heavy naphtha, kerosene, light gas oil, heavy gas oil and residue. From these intermediate refinery product streams several final product streams such as fuel gas, liquefied petroleum gas (LPG) CONRADSON CARBON RESIDUE of petroleum products of tar and pitch. Any residual mineral acid in a petroleum product is undesirable. This test makes a qualitative determination of the acidity of hydrocarbon liquids and their distillation residues. The Micro Conradson Carbon Residue and Ash Tester features a display screen that allows for friendly and easy use of the apparatus. Each solenoid valve can be either manually or automatically activated. The detailed test reports can be printed out in 40 or 80 columns or read on the display Carbon Capture, Use And Storage (CCUS) All rights reserved worldwide Requests to reproduce excerpts or to photocopy should be addressed to the Copyright Clearance Center at copyright.com. All other queries on rights and licenses, including subsidiary rights, should be addressed to: United The residue undergoes cracking and coking reactions during a fixed period of severe heating. The residue remaining is calculated as a mass percentage of the original test portion. The method may be used to determine amounts of carbon residues in the range of 0,01 % (m/m) to 30,0 % (m/m), left CARBON-HYDROGEN-NITROGEN DETERMI-NATION-see Nitrogen Determination, p. 239. Carbon number distribution. Some petroleum products are treated with mineral acid during refining process. Any residual mineral acid in a petroleum product is undesirable. WRROcoversheetWilliams3.pdf. The carbon residue test is a measure of the tendency of the oil to form carbon under poor combustion conditions which may lead to carbon coking of diesel engine fuel injector nozzles or spray combustion burners. 5.1 The carbon residue value of burner fuel serves as a rough approximation of the tendency of the fuel to form deposits in vaporizing pot-type and sleeve-type burners. The term carbon residue is continued in this test method only in deference to its wide common usage. (Redirected from 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. Abstract A rapid test has been developed for determination of the coke forming tendency of petroleum materials in the range. @article{Noel1984AlternativeTT, title={Alternative to the Conradson carbon residue test}, author={F. Noel}, journal={Fuel}, year={1984}, volume={63}, pages={931-934} }. Abstract A rapid test has been developed for determination of the coke forming tendency of petroleum materials in the range. @article{Noel1984AlternativeTT, title={Alternative to the Conradson carbon residue test}, author={F. Noel}, journal={Fuel}, year={1984}, volume={63}, pages={931-934} }. 1.1 This test method covers the determination of the amount of carbon residue (Note 1) left after evaporation and pyrolysis of an oil, and is intended to provide some indication of relative coke-forming propensities. This test method is generally applicable to relatively nonvolatile petroleum products

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