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K47100 Automated Flocculation Titrimeter |
| Test Method Quantification of three Heithaus compatibility parameters to estimate the colloidal stability of asphalts and asphalt cross blends, aged asphalts, and pyrolyzed heavy oil residua and asphalt using automated Heithaus titrimetry as a stability diagnostic tool Features and Benefits • Conforms to ASTM D6703 specifications • Sealed sample chamber eliminates solvent losses from evaporation • Fast, repeatable analysis from automated computer control and spectroscopic endpoint detection eliminates variations due to operators using visual endpoint determination. • Easy to clean with fast solvent flush. No metal parts come into contact with solvents. PTFE flow system eliminates fouling of polar metal surfaces. Wide temperature range, 20-100°C, for studying temperature dependence of asphaltene flocculation. |
| K47100 Automated Flocculation Titrimeter The Automated Flocculation Titrimeter (AFT) is a highly automated, computerized instrument that acquires oil stability and compatibility parameters directly. The AFT can be used to perform ASTM method D6703, Standard Test Method for Automated Heithaus Titrimetry. The AFT operates as a closed system with accurately controlled temperatures between 20-100°C, and the flocculation point is determined spectroscopically. This virtually eliminates operator error in the interpretation of endpoints. The automated method is fast, accurate and very reproducible. The utility of the original Heithaus method has been expanded by developing multiple titration schemes. The data from the expanded method are used to predict the proximity to coke formation during heavy oil distillation. Many refiners stop distillation well short of coke formation to avoid fouling in distillation equipment, tanks and transfer lines. The expanded AFT methodology allows the refiner to recover additional distillate without fear of fouling fields. Major Applications • Blending of Oils and/or Asphalts One of the primary uses of Heithaus values is to predict which oils and petroleum residua or asphalts can be mixed together for shipping, processing, or in formulations without causing phase separation. This is valuable to the refiner or asphalt jobber who supplies petroleum asphalts for highway and roofing applications because it ensures that compatible asphalt blends are supplied. Incompatible asphalts show early failure in both applications. • Coking Index Another major use for the AFT is to acquire the data needed to employ the Coking Index. The Coking Index is a quantitative measure of the proximity to coking (fouling) during visbreaking, distillation, transfer and storage of heavy oil. This allows the petroleum refiner to optimize heavy oil processing and to recover the maximum amount of distillate, and to stop the processing before fouling occurs. • Solubility Parameter The solubility parameter at which asphaltenes begin to precipitate and the solubility parameter of the whole oil can be calculated from AFT data. Specifications Conforms to: ASTM D6703 Electrical Requirements 115V 50/60Hz 220-240V 50/60Hz |
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