Method for detecting tar content in low-tar coke oven gas
A technology of coke oven gas and low tar, which is applied in the measurement of color/spectral characteristics, etc., can solve the problems of large error in measurement results and low detection sensitivity, and achieve the effect of good reproducibility
Inactive Publication Date: 2013-04-24
PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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Problems solved by technology
For tar content greater than 10mg / m 3 For the determination of the tar content of the coke oven gas, the visual colorimetric method has better results, but for the tar content of 10mg / m 3 For the determination of the tar content of the following coke oven gas, the error of the measurement result of the visual colorimetry method is large, and the detection sensitivity is low
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[0015] Hereinafter, the method for detecting tar content in low-tar coke oven gas of the present invention will be described in detail with reference to exemplary embodiments.
[0016] Detection of low tar content according to the present invention (tar content is at 10mg / m 3 The method for tar content in the coke oven gas of the following) comprises the following steps, (a) obtaining the linear relationship between the tar concentration of the xylene solution of tar and the absorbance of the xylene solution of tar; (b) absorbing coke with xylene tar in the furnace gas to obtain tar-absorbed xylene; (c) measure the absorbance of tar-absorbed xylene and use the linear relationship described to obtain tar-absorbed xylene from the absorbance of tar-absorbed xylene (d) The tar content in the coke oven gas is obtained from the tar concentration of the xylene that has absorbed the tar.
[0017] In an exemplary embodiment of the present invention, the method for detecting tar conten...
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Abstract
The invention discloses a method for detecting the tar content in low-tar (the content of tar is below 10 mg / m<3>) coke oven gas, which comprises the following steps: (a) obtaining a linear relation between the tar concentration and the absorbance of dimethylbenzene solution containing tar; (b) adsorbing the tar in the coke oven gas by using dimethylbenzene to obtain the dimethylbenzene adsorbing the tar; (c) measuring the absorbance of the dimethylbenzene adsorbing the tar and obtaining the tar concentration of the dimethylbenzene adsorbing the tar through the absorbance of the dimethylbenzene adsorbing the tar by using the linear relation; and (d) obtaining the tar content in the coke oven gas through the tar concentration of the dimethylbenzene adsorbing the tar. The method has the benefits that the low tar content in the coke oven gas can be detected, and the method has the advantages of simplicity, quickness, accuracy, good reproducibility and the like.
Description
technical field [0001] The invention relates to a method for detecting tar content in coke oven gas, in particular to a method with low tar content (less than 10mg / m 3 ) method for the detection of tar content in coke oven gas. Background technique [0002] The detection of tar content in coke oven gas is an important parameter to measure the quality of coke oven gas after purification, and also an important indicator to ensure coke oven gas as an energy supply. In the field of metallurgy, the tar mist in the coke oven gas should be removed thoroughly, otherwise it will have a serious impact on the purification of the coke oven gas. The tar mist will affect the desulfurization effect of the desulfurization tower, so the analysis of the tar content in the gas is One of the most important testing items for testing the impurity content of coke oven gas. [0003] A method for measuring tar content in coke oven gas in the prior art is the national standard method, that is, usin...
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IPC IPC(8): G01N21/33
Inventor 严文群
Owner PANGANG GRP XICHANG STEEL & VANADIUM CO LTD