Quantitative determination method for component distillation drops of coking crude benzol

Abstract

The invention relates to the field of distillation range determination, and in particular relates to a quantitative determination method for component distillation drops of coking crude benzol. The quantitative determination method is characterized by comprising the steps as follows: during the process of distillation range testing on a full-automatic distillation tester, a computer automatically observes an initial boiling point and starts recording the quantity of distillation drops, the volume V and the total drop number N(total) of a distillate of a component are metered according to the boiling point temperature difference of the components of the crude benzol and the volume of each distillation drop of the component sample is computed as Vi, so that the volume percent V(n) of each component can be obtained according to the drop number N(n) of the distillate of other components, and then the mass percent W(n) of each component can be computed out and the computer automatically gives a report and a distillation graph about the content of each component in the crude benzol. Compared with the prior art, the quantitative determination method has the advantages of greatly improving the testing precision, distinguishing various components contained in coking light oil in a finer way, metering the boiling point temperature of each component as well as the weight percent of each component in the coking light oil and providing finer technology data for the production process.

Description

technical field [0001] The invention relates to the field of distillation range determination, in particular to a method for determining the fractional distillation titer of coking crude benzene. Background technique [0002] Analysis of coking light oil product composition, content of components and determination of distillation range is the daily work of the coking enterprise laboratory. At present, most of the analysis and determination are still done manually by chemical analysis and distillation. During the distillation process of coking oil products, there are thousands of distillate substances, of which only dozens of varieties are commonly used for detection, and each distillate substance has a different initial distillation temperature corresponding to it. [0003] During the determination of the distillation range by artificial distillation, the experimental operators use the naked eye to observe and record key parameters such as the initial distillation point, fin...

AI Technical Summary

Problems solved by technology

[0003] In the process of determining the distillation range of artificial distillation, the experimental operators use the naked eye to observe and record key parameters such as the initial boiling point, final boiling point, and dry point in the distillation range. The distillation range curve is also calculated and drawn manually. Due to the low accuracy of manual observation , slow speed, and many human-influenced factors make the quality and accuracy of the measurement results low. For this reason, some large coking enterprises also conduct gas chromatography analysis to determine the product composition structure at the same time.

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