Flue gas treatment system and dry-wet oxygen measurement apparatus thereof

Abstract

The present invention discloses a dry-wet oxygen measurement apparatus for a flue gas treatment system. The dry-wet oxygen measurement apparatus comprises a wet oxygen measurement instrument and a dry oxygen measurement instrument, wherein gas paths of the wet oxygen measurement instrument and the dry oxygen measurement instrument are arranged in a side-by-side manner, an inlet of the wet oxygen measurement instrument is communicated with a flue channel through a pipeline, and an inlet of the dry oxygen measurement instrument is communicated with an outlet of a pretreatment device. During online monitoring, flue gas in the flue channel concurrently enters the gas path of the wet oxygen measurement instrument and the gas path of the dry oxygen measurement instrument, the wet oxygen measurement instrument detects wet oxygen content of the initial flue gas in the flue channel, and the dry oxygen measurement instrument detects dry oxygen content of the flue gas treated through the pretreatment device so as to calculate to obtain humidity of the flue gas, such that concurrent wet oxygen content and dry oxygen content measurement is achieved, delayed quantity between the two measurement values is reduced, and measurement precision of the flue gas humidity is improved. The present invention further discloses a flue gas treatment system comprising the dry-wet oxygen measurement apparatus.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment equipment, in particular to a dry and wet oxygen measuring device used in a flue gas treatment system. The present invention also relates to a flue gas treatment system comprising the above dry and wet oxygen measuring device. Background technique [0002] With the continuous improvement of people's awareness of environmental protection, various gas pollution accidents have been highly valued by the country. The occurrence of pollution accidents is a risk factor that damages the ecological environment and threatens human health; It is imminent to improve the level of environmental risk identification, assessment, prevention and emergency response. [0003] The humidity measurement of high-temperature flue gas is one of the important indicators of flue gas measurement. At present, the humidity of high-temperature flue gas is mostly detected by dry and wet oxygen measuring devices. In t...

AI Technical Summary

Problems solved by technology

[0004] However, since the wet oxygen measuring device in the traditional dry and wet oxygen measuring device is directly inserted into the flue, and the dry oxygen measuring device is arranged after the pretreatment system, in this way, the flue gas first passes through the wet oxygen measuring device during work. , and then undergo a series of treatments by the pretreatment system, and finally the treated flue gas can enter the dry oxygen measurement device for dry oxygen measurement, which leads to wet oxygen measurement and dry oxygen measurement on the same gas path, and the distance between the two is relatively small. Far, it is easy to cause the measured value to lag, and the drift direction of the dry oxygen measuring device and the wet oxygen measuring device are inconsistent, resulting in a large deviation in the calculated humidity

Images