Analytic method and device for gas with coketar particles

Abstract

A method for analyzing gas with tar particles include leading gas to be analyzing into liquid contained in sealed container and dissolving tar particles in gas by said liquid, filtering said gas when it is discharged out from said liquid, sending discharged out gas into analyzer for obtaining parameter of said gas. The device used for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to a gas analysis method and device, in particular to a gas analysis method and device with tar particles. Background technique [0002] At present, in the fields of iron and steel, coking, etc., it is usually necessary to measure the concentration of gas components such as oxygen and carbon monoxide in the process gas. However, in the above-mentioned application fields, the gas in some process pipelines contains a large amount of tar particles, and the viscous tar particles in the measured gas will adhere to various parts of the analytical instrument, resulting in increased measurement errors or even failure to measure. [0003] The composition of the tar is extremely complex, but can be roughly divided into light oil and heavy oil; heavy oil includes phenol oil, naphthalene oil, wash oil, monoanthracene oil, dianthracene oil and asphalt, etc., and the boiling point of light oil is lower than that of heavy oil. [0004] In view ...

AI Technical Summary

Problems solved by technology

Directly using a solid-state filter to filter viscous tar particles mainly has the following disadvantages: if the pores of the filter are too fine, the viscous tar particles will easily block the filter, which will cause the downstream gas analysis instrument to fail to obtain the measured gas

If the pores of the filter are too thick, the downstream gas still contains a large amount of tar particles, which will cause the measurement error of the downstream gas analysis instrument to increase or even be damaged

The conventional solution is: use a filter with high filtration precision, and then use high-temperature steam to back-flush the solid-state filter every once in a while to clean up the tar particles attached to the filter; such cleaning is usually not thorough enough, and after relatively After a long period of use, the solid filter needs to be removed and cleaned or replaced with an organic solvent

This method not only has a large maintenance workload, but also has low efficiency in the use of downstream gas analysis instruments; moreover, some tiny viscous tar particles will pass through the filter, thereby polluting downstream analysis instruments, which not only further increases the maintenance workload , serious damage to precision analytical instruments

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