Method for determining initial boiling point and final boiling point of three-oil mixture in tar

Abstract

The invention discloses a method for determining an initial boiling point and a final boiling point of a three-oil mixture in tar, which comprises the following steps: carrying out determination on a three-oil mixture sample to be determined by using the capillary chromatography; calculating the sum of front component contents of naphthalene; calculating the sum of a fluorine content and rear component contents of the fluorine; carrying out detection on the three-oil mixture sample by using a distillation method, and recording the data of the initial boiling point and the data of the final boiling point; carrying out tabulating on the data of the initial boiling point and the corresponding sum of front component contents of naphthalene, and making a scatter diagram and a trend line, thereby obtaining a first regression curve equation; carrying out tabulating on the data of the final boiling point and the corresponding sum of rear component contents of fluorine, and making a scatter diagram and a trend line, thereby obtaining a second regression curve equation; and calculating the initial boiling point and final boiling point of the three-oil mixture in the process of three-oil mixture production by using the first regression curve equation and the second regression curve equation. The method disclosed by the invention is high in accuracy, is rapid (the method can be implemented just within 20 minutes) and convenient, and has no pollution; and by using the method, the working strength of an analyst can be reduced, the working environment can be improved, the working efficiency can be enhanced, and the physical health of the testing personnel can be ensured.

Description

technical field [0001] The invention relates to a method for measuring triple-mixed oil, in particular to a method for measuring the initial boiling point and dry point of triple-mixed oil in tar. Background technique [0002] At present, in the domestic crude tar processing industry, the tar distillation system generally adopts a single-furnace single-tower tar distillation process, that is, the crude tar is heated through a tube furnace, and after the water and asphalt are separated by the primary evaporator and the secondary evaporator, the oil and gas are mixed. In the fractionation column, the di-light oil, tri-mixed oil and anthracene oil are separated, and the tri-mixed oil is a mixture of three valuable fractions including phenol oil, naphthalene oil and washing oil. Its quality and quantity are the key to the control of tar processing technology. It directly affects the benefit of tar processing, and it is of great significance to quickly and accurately measure the ...

AI Technical Summary

Problems solved by technology

The operation process of this method is cumbersome, the analysis time is long (generally more than 50 minutes), errors are prone to occur, the distillation process is seriously polluted, and the highly toxic benzene compounds and polycyclic aromatic hydrocarbons produced during the distillation process seriously damage the health of analysts. The above-mentioned drawbacks of the analysis method are no longer compatible with the requirements of modern enterprises for technological progress, so it is imperative to innovate the measurement method to meet the actual production needs

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