IMPROVED HIGH TEMPERATURE SIMULATED DISTILLATION

摘要

Systems and methods based on high temperature simulated distillation - so-called simdis - for determining a boiling point distribution of a sample, such as petroleum residues, include controlling the rates of temperature increase for a column (204), such as a GC column, and an injection port (202). An analyzer (200) includes a column (204) having a column heating element (208) and an injection port (202) having an injection port heating element (206). The temperature of the column (204) can be increased at a first rate, and a temperature of the injection port (202) can be increased at a second rate. The first and second rates are selected such that the temperature of the injection port (202) is within about five to fifteen degrees Celsius of the temperature of the column (204) when the temperature of the injection port (202) reaches a target temperature of minimal thermal decomposition.