Flue gas sulfur trioxide sampling equipment and method

Abstract

The invention relates to a boiler flue gas component detection technology, in particular to flue gas sulfur trioxide sampling equipment and method. The equipment comprises a heating smoke gun arrangedin a flue, and a micro-channel gas-liquid reactor, a gas-liquid separator and a drying bottle which are sequentially connected and arranged in a low-temperature box; the micro-channel gas-liquid reactor comprises a spiral reaction part, wherein the input end of the spiral reaction part is provided with a gas inlet and a liquid inlet in parallel, and the output end is provided with a mixed outlet;the input end of the heating smoke gun is inserted into the flue, and the output end is connected with the gas inlet of the micro-channel gas-liquid contact reactor after entering the low-temperaturebox; a mixed outlet of the micro-channel gas-liquid reactor is connected with an inlet of the gas-liquid separator; a liquid outlet of the gas-liquid separator is connected with a liquid inlet of themicro-channel gas-liquid contact reactor through a liquid circulating pump, and a gas outlet of the gas-liquid separator is connected with an inlet of the drying bottle; a flowmeter and a sucking pump are sequentially arranged at an outlet of the drying bottle. The method is high in absorption efficiency, high in detection accuracy and capable of effectively improving the SO3 collection precision.

Description

technical field [0001] The invention relates to a boiler flue gas component detection technology, in particular to a flue gas sulfur trioxide sampling device and method. Background technique [0002] Boiler flue gas contains many pollutants. With the implementation of domestic boiler air pollutant emission standards and the vigorous promotion of ultra-low emission transformation of coal-fired power plants, traditional air pollutants include SO 2 , NO x As well as smoke and dust, etc., have been effectively controlled. However, atmospheric smog has not been significantly improved, and researchers in the industry have also shifted their focus to other trace pollutants, including SO 3 . According to a report by the U.S. Environmental Protection Agency (USEPA), SO 3 And sulfuric acid aerosol may cause a series of health problems, and it is also the direct cause of acid rain, and the main source of primary condensable PM2.5 in boiler flue gas is also SO 3 , SO 3 The toxicit...

AI Technical Summary

Problems solved by technology

[0003] Thanks to SO 3 / Sulfuric acid vapor has special physical and chemical properties, so SO 3 The detection and control of the industry has always been a difficult problem in the industry, the existing SO 3 Sampling and detection technology is complicated to operate and has a lot of equipment. 3 The collection rate is not stable, so SO 3 The accuracy and repeatability of the detection are not ideal

Images