Sampling device for extracting smoke from high-temperature flue gas

Abstract

The present invention provides a sampling device for extracting smoke from high-temperature flue gas. The device comprises a collecting assembly, a filtering assembly, a supporting assembly and a water curtain assembly. By applying the technical scheme, the effect that the overall structure is precise and simplified is achieved; water flow is guided by a flow limiting curved surface and a flow guiding surface in the water curtain assembly, and the minimum cross-sectional position between the flow limiting curved surface and the flow guiding surface is changed along with water flow speed conditions; when the water flow flows through a gap between the flow limiting curved surface and the flow guiding surface, it can be ensured that the water flow at an outlet stays in a flowing downward state, and a uniform water curtain is formed along the circumference; when the flue gas passes through the water curtain, the smoke carried in the flue gas is captured by the water curtain, and collectionof the smoke is facilitated; the smoke carried in the high-temperature flue gas is captured by the water curtain, then falls into the collecting assembly along with the water curtain and is quenchedby water so that a further chemical reaction of the smoke can be prevented, and therefore original material phase compositions of the smoke is maintained. Through design of the filtering assembly, thewater and a smoke sample can be effectively separated, and convenience is provided extraction of the smoke sample.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to a sampling device for extracting smoke from high-temperature smoke. Background technique [0002] In order to study the reaction status and reaction mechanism in the pyrometallurgical furnace, it is necessary to extract the soot sample from the pyrometallurgical furnace, and then detect and analyze the particle size and composition of the soot sample; Oxidation occurs when exposed to air, and rapid cooling of the soot is also required to ensure the original characteristics of the chemical composition of the dust sample. However, the materials entering the furnace react violently in the high-temperature metallurgical furnace, making the temperature in the furnace reach above 1250°C, and most of the high-temperature metallurgical furnaces have high flue gas flow rates, low density of smoke and dust, and are easy to bond, which brings great pressure to the extraction of...

AI Technical Summary

Problems solved by technology

This kind of device is suitable for flue gas sampling, but when it is used for soot or soot sampling, due to the low cooling efficiency, the soot or soot cannot be cooled rapidly, which may cause the soot or soot sample to react in a molten state, which is not conducive to Keep the original phase of soot or soot, which will lead to the distortion of subsequent detection and analysis results and lose its value, and the amount of soot or soot extracted by it is small, which is not convenient for the analysis of soot or soot

[0004] In addition, there are sampling devices with other structures, which are either complicated in structure, high in cost and inconvenient to use, or unsuitable for sampling dusty flue gas in high temperature metallurgical furnaces

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