Stationary combustion source flue gas mixing channel dilution multistage sampling device

Abstract

The invention discloses a stationary combustion source flue gas mixing channel dilution multistage sampling device, and relates to a stationary combustion source emission high temperature flue gas dilution cooling device, physical and chemical change processes in the process for emission of high temperature flue gas into environment atmosphere are simulated by the device, an automatic feedback regulation controlled two-stage dilution channel is used, sampling dilution ratio and residence time can be adjusted, accurate dilution ratio and temperature control can be achieved, experimental data acquisition, recording and display can be achieved, eight particle size levels of atmospheric total suspended particles in the flue gas are simultaneously sampled, and the device belongs to the technical field of environmental detection. The stationary combustion source flue gas mixing channel dilution multistage sampling device comprises a sampling gun, a heating insulating tube, a jet pump, a dilution chamber, a clean air generator, a temporary storage box, a multistage sampling system and a display control system in effective assembly to complete high temperature flue gas two-stage dilution sampling. The stationary combustion source flue gas mixing channel dilution multistage sampling device effectively solves the problem that first condensation particles in stationary combustion source emission flue gas are difficult to collect, and can be used for classified sampling of particles in the stationary combustion source emission flue gas, the whole device adopts a modular design, is easy to repair, maintain and service, and the whole device can be integrated with a mobile platform, and is suitable for in-situ sampling work under various conditions.

Description

technical field [0001] The invention relates to a multi-stage sampling device for dilution and multi-stage sampling of flue gas from a fixed combustion source, and relates to a device capable of diluting and cooling the high-temperature flue gas discharged from a fixed combustion source. During the change process, the secondary dilution channel controlled by automatic feedback adjustment is adopted, the sampling dilution ratio and residence time are adjustable, and the dilution ratio and temperature can be precisely controlled, and the experimental data can be collected, recorded and displayed, and the atmosphere in the flue gas can be analyzed. The total suspended particulate matter is sampled in 8 particle size classes at the same time, which belongs to the field of environmental detection technology. Background technique [0002] Studies have shown that particulate matter emitted from stationary combustion sources is one of the important sources of total suspended particu...

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Problems solved by technology

[0004] To sum up, the simulation of the physical and chemical changes that occur when the flue gas emitted by stationary sources enters the ambient air and is diluted is essential for the study of particulate matter emitted by stationary combustion sources. Important direction, none of the existing equipment can complete the multi-stage sampling research on particulate matter emitted by fixed combustion sources, so it is of great significance to develop a multi-stage sampling device for dilution of fixed combustion source flue gas mixing channels

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