Method for efficiently dissolving high-temperature tar

Abstract

The invention discloses a method for efficiently dissolving high-temperature coal tar and verifying the dissolving effect of the high-temperature coal tar, and aims to effectively solve the problems that a dissolved organic solvent is difficult to select in a tar dissolving process and the dissolving effect cannot be quantitatively measured and evaluated after dissolving. According to the invention, parameters for characterizing the tar dissolving capacity of a solvent are provided for detection of soluble residue parameters and the content of a marker post substance naphthalene after dissolution, quantitative comparison of solvent dissolution can be carried out, a scientific, convenient and practical method is provided for scientific and effective selection of the tar solvent, and the method is of great significance to component detection in the tar field.

Description

technical field [0001] The invention relates to the technical field of inspection and analysis, in particular to a method for efficiently dissolving high-temperature tar. Background technique [0002] my country is the world's largest producer of metallurgical coke. In recent years, the annual output of metallurgical coke has been around 430 million tons. Coal tar is the most important by-product of coking, and the annual output of coal tar is about 20 million tons. Coal tar is the only source of many chemical, pharmaceutical, pesticide, printing and dyeing products, and plays a special and important role in the development of the national economy. Coal tar is an important profit point for coking enterprises. Coal tar is a black or dark brown viscous liquid with a pungent odor. The density at 20°C is between 1.10 and 1.25g / cm3. The components in coal tar It is very complex, and its organic compound components are estimated to have tens of thousands of species, but most of t...

AI Technical Summary

Problems solved by technology

Tar is a viscous substance with extremely complex components and high viscosity. There are more than 500 components of tar that have been detected so far. The basis and premise of the detection of tar components is that tar can be better dissolved in a solvent , but as tar is an extremely complex mixture, there is no organic solvent that can completely dissolve tar. Therefore, the dissolution of tar is only a relative concept, and it is necessary to determine an efficient method for dissolving tar. The degree of dissolution determines a measurement method, which provides the basis and possibility for the detection of various components in tar, and is also the guarantee and premise of the accuracy of the detection of various components in tar

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