The present invention provides a method for decreasing the conradson carbon concarbon number of petroleum feedstreams by passing an electric current through a mixture of a petroleum stream, typically having a conradson carbon residue of at least about 0. A number in parentheses indicates the year of last reapproval. The publication, guide to astm test methods for the analysis of petroleum products and lubricants. The test results are equivalent to test method dsee fig. High carbon residue value is undesirable for a fuel. Note 1the term carbon residue is used throughout this test method to designate the carbonaceous residue formed after evaporation and pyrolysis of a petroleum product under the conditions specified in this test method. Petroleum products astm d189 conradson carbon residue.
Carbon residue for a fuel is measured in weight percentage wt % or parts per million by weight ppm wt. Caution should be taken when handling mercury and mercury containing products. Carbon residue for a fossil fuel can be defined as the tendency of that fuel to form carbon deposits at high temperature in an inert atmosphere. Guide to astm test methods for the analysis of petroleum. D4046 test method for alkyl nitrate in diesel fuels by spectrophotometry. This international standard is also applicable to petroleum products which consist essentially of distillate material, and which may yield a carbon residue below 0,10 % mm. Methods of measurement and test for petroleum, petroleum products and lubricants pcd 1 designator of legally binding document. D56 d3710 to find similar documents by classification. Physical and chemical properties of crude oil and oil products. Petroleum, coal, and related products section name. D4175 terminology relating to petroleum products, liquid fuels, and lubricants.
Us5514252a method for reducing conradson carbon content. Conradson carbon residue of petroleum products provides an indication of relative coke forming properties of petroleum oils. Standard test method for conradson carbon residue of petroleum products1 this standard is issued under the. Conradson carbon residue of petroleum products1 this standard is issued under the. Methods of test for petroleum and its products, part 122. Standard test method for conradson carbon residue of petroleum products 1. In most cases the lower the carbon residue, the more valuable the crude.
Conradson carbon residue, commonly known as concarbon or ccr is a laboratory test used to provide an indication of the cokeforming tendencies of an oil. Petroleum products astm d189 conradson carbon residue testercarbon residue test equipment price, find complete details about petroleum products astm d189 conradson carbon residue testercarbon residue test equipment price,carbon residue tester,conradson carbon residue tester,carbon residue tester price from testing equipment supplier or manufacturerheze far east import and export co. The residue remaining after a specified period of evaporation and pyrolysis is calculated as a percentage of the original sample. D524 test method for ramsbottom carbon residue of petroleum products. The method is generally applicable to relatively nonvolatile petroleum products which partially decompose on distillation at. The ramsbottom carbon residue bath is a solid block bath with five test wells, digital temperature.
Scope this international standard specifies a method for determining the amount of carbon residue, in the range of 0,01 % mm to 30. Standard test method for determination of carbon residue. Quantitatively, the test measures the amount of carbonaceous residue remaining after the oils evaporation and pyrolysis. Standard test method for conradson carbon residue of. In general, the test is applicable to petroleum products which are relatively nonvolatile, and which decompose on. Astm d 01 standard test method for conradson carbon residue of petroleum products. Note the term carbon residue is used throughout this test method to designate the carbonaceous residue formed after evaporation and pyrolysis of a petroleum product. Astm d189062019 standard test method for conradson. The term carbon residue is continued in this test method d198 in deference to its wide common usage. The residue remaining is calculated as a percentage of the original sample and reported as conradson carbon residue. Conradson carbon residue ccr for biodiesel is more important than that in diesel fuel because it show a high correlation with presence of free fatty acids, glycerides, soaps, polymers, higher unsaturated fatty acids, inorganic impurities and even on the additives used for pour point depression. Astm d189 standard test method for conradson carbon.
Standard test method for heat of combustion of liquid hydrocarbon fuels by bomb calorimeter. Astm d 05 standard test method for conradson carbon residue of petroleum products. Conradson carbon residue apparatus supports the following standards. Astmd189 standard test method for conradson carbon. Astm d189062014 standard test method for conradson. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The test is used to provide some indication of a materials cokeforming tendencies. Standard test method for pour point of petroleum products. Conradson carbon residue apparatus h2495 the h2495, conradson carbon residue apparatus is used to test petroleum products to determine the amount of carbon residue left after evaporation and pyrolysis of an oil and to indicate relative cokeforming propensities. For example, an ashforming detergent additive may increase the carbon residue value of an oil yet will generally reduce its tendency to form deposits. In diesel fuel, the presence of alkyl nitrates such as amyl nitrate, hexyl nitrate, or octyl nitrate causes a higher residue value than observed in untreated fuel, which can lead to erroneous conclusions as to the coke forming propensity of the fuel. The residue is not composed entirely of carbon, but is a coke which can be further changed by pyrolysis.
The test results are equivalent to the test results obtained from the conradson carbon residue test. Rightclick 1d89 open the pdf in a new window or download it. On such materials, a 10 % vv distillation residue is prepared by the procedure described in 7. Type text as it appears link to active this link will always route to. Aci astm c173 newer version available, click top right corner duration. The carbon residue is roughly related to the asphalt content of the crude and to the quantity of the lubricating oil fraction that can be recovered. Carbon residue of the fuel is indicative of carbon depositing tendencies of the fuel. D4057 practice for manual sampling of petroleum and petroleum products.
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