Coke oven group oxynitride detection method

Abstract

The invention discloses a coke oven group oxynitride detection method. The method comprises the following steps of: setting two sampling points on two sides of a chimney partition wall in two coke ovens of a coke oven group by adopting a time domain partition sampling technology, respectively carrying out time domain partition batch-type sampling on smoke of the coke oven A and the coke oven B, and respectively measuring the contents of oxynitrides in the coke oven A and the coke oven B and content of oxynitride of total smoke through a model operating system, wherein the contents of oxynitrides of the coke oven A and the coke oven B are used for providing data for technological operation guidance, and the content of oxynitride of the total smoke is used for providing data for environmental protection monitoring. The method provided by the invention uses one set of oxynitride detection equipment for realizing detecting oxynitrides in two ovens, therefore, the equipment investment is reduced, and the measurement accuracy is high.

Description

technical field [0001] The invention relates to a method for detecting nitrogen oxides in coke oven flue gas. Background technique [0002] The content of nitrogen oxides in the coke oven flue gas is one of the important detection parameters of the coke oven process. It is also an important indicator of the main emission gas pollutants for environmental protection emission monitoring. The monitoring of the thermal state of the coke oven, the fire adjustment and the tightness of the coke oven have important guiding significance. By detecting the content of nitrogen oxides in the coke oven flue gas, the current operating state of the coke oven can be judged, and according to its state Necessary process adjustments are made to make the process state of the coke oven tend to be reasonable, so that the coke oven always works under the best process state. [0003] In the past, single-point detection methods were mostly used for the detection of nitrogen oxides in coke ovens, and ...

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Problems solved by technology

[0003] In the past, single-point detection methods were mostly used for the detection of nitrogen oxides in coke ovens, and each measurement point required a set of independent detection equipment. In this way, one coke oven group required two sets of nitrogen oxides analysis systems according to the process requirements , if environmental protection monitoring data is considered, one coke oven group needs three sets of nitrogen oxide analysis systems, which will undoubtedly greatly increase equipment investment and increase the burden on enterprises for expensive nitrogen oxide analysis systems

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