Distillation flask and system and method for ignition-free closed flash point determination of petroleum products

Abstract

The invention discloses a method for ignition-free closed flash point determination of petroleum products. The method includes: heating a to-be-tested petroleum product to dry out; collecting a firststeam temperature and the liquid temperature of the petroleum product according to preset sampling frequency; collecting steam differential pressure of the petroleum product according to preset collection frequency; preprocessing data of the first steam temperature and the steam differential pressure to obtain a changing curve of normalization integrals of the steam differential pressure and a second steam temperature of the to-be-tested petroleum product; substituting the changing curve of normalization integrals of the steam differential pressure and the second steam temperature of the to-be-tested petroleum product into an established multi-element correction model to obtain closed flash point results of the petroleum product in a distillation process. The invention further disclosed adistillation flask and a system for ignition-free closed flash point determination of the petroleum products. By adoption of the method for ignition-free closed flash point determination of the petroleum products, determination efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of petroleum refining, in particular to a method and system for determining the non-ignition closed flash point of distillation flasks and petroleum products. Background technique [0002] The closed flash point of petroleum products is an important indicator to characterize the fire hazard, explosive characteristics, volatility and the composition of oil fractions of petroleum products. Combining these indicators can determine the temperature control and fire prevention measures during production, transportation, storage and use, so it detection is of great significance. The lower the closed flash point of petroleum products, the more flammable the oil, and the greater the risk of fire; on the contrary, the higher the closed flash point of petroleum products, the less flammable the oil, and the lower the fire risk. The closed flash point of petroleum products reflects the evaporability of petroleum product...

AI Technical Summary

Problems solved by technology

Therefore, the experimental accuracy is low and the efficiency is low, and the test results are closely related to the experience of the operator.

This method also has the disadvantages of large sample volume, high risk, and high toxicity, which is easy to cause harm to personal safety, and at the same time has the disadvantages of large test errors.

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