abstract |
The invention belongs to the field of petrochemical industry, specifically relates to a method for measuring the freezing point, and more specifically relates to a method for measuring the freezing point of petroleum and its petroleum products. The invention determines whether the oil sample is solidified by measuring the change of resistance twice before and after the inclination, overcomes the defect of large error only by manual judgment in the existing determination method, and the measurement is more accurate. At the same time, the method for measuring the freezing point of the present invention is simple, not only fully meets the requirements of GB/T510‑2018 "Determination of the freezing point of petroleum products", but also has a wide range of applications. |