Petroleum product distillation analyzerThe control box is made of galvanized sheet metal, with a test observation window on the upper part and a built-in heating electric furnace; Install the circuit control part at the bottom of the box. The position of the electric furnace can be adjusted by the height adjustment knob on the control box to adjust the relative position between the distillation flask and the condenser tube. The heating power is controlled through a voltage adjustment knob.
During the interval from the initial distillation point to the end of distillation, observe and record all data required for calculating and reporting experimental results. These observed data include thermometer readings at specified recovery percentages or volumes, or recovery percentages or volumes at specified thermometer readings, or both. According to the instrument used, record the volume of liquid in all measuring cylinders to 0.5 mL (manual) or 0.1 mL (automatic), and record all thermometer readings to 0.5 ℃ (manual) or 0.1 ℃ (automatic).
1. 0 group; In the absence of specified data requirements, record the temperature readings of the initial boiling point, final boiling point, and recovery percentage or multiple of recovery volume from 10% to 90% per 10%.
2. Group 1, Group 2, Group 3, and Group 4; In the absence of specified data requirements, record the initial boiling point, final boiling point, or dry point, or the latter two, as well as the thermometer readings of 5%, 15%, 85%, 95% recovery percentage or recovery volume, and every 10% recovery percentage or multiple of recovery volume from 10% to 90%.
Petroleum product distillation analyzerWhen the residual liquid in the distillation flask is about 5mL, adjust it after heating, so that the time from 5mL liquid residue in the distillation flask to the final distillation point should meet the specified range. If this condition cannot be met, adjust the heating according to the modified maximum and conduct the test again.
Observe and record the final boiling point or ten points, or both, as required, and stop heating.
When liquid continues to drip into the measuring cylinder from the condenser tube, observe the volume of the condensate every 2 minutes until the volumes observed in two consecutive observations are consistent. Measure the volume and record it. According to the instrument used, report as the highest recovery percentage up to 0.5mL or 0.1mL. If a decomposition point occurs and distillation is stopped in advance, subtract the maximum recovery percentage from 100% and report the difference as residual amount and loss.
After the distillation flask has cooled down, pour its contents into a 5mL volumetric flask and suspend the flask over the 5mL volumetric flask. Allow the flask to drain until no significant increase in liquid volume is observed in the 5rnL volumetric flask.
1. 0 group; Cool the measuring cylinder to. Record the volume of liquid in the measuring cylinder at 0 ℃ to 40 ℃, up to 0.1mL, as the residual percentage.
2. Group 1, Group 2, Group 3, and Group 4; Record the volume of liquid in the graduated cylinder to 0.1mL as the residual percentage.
Petroleum product distillation analyzerThe sum of the maximum recovery percentage and residual percentage is the total recovery percentage. Subtract the total recovery percentage from 100% to obtain the loss percentage.
