Device for evaluating efficiency of PM2.5 turbulence agglomerating device

Abstract

The invention discloses a device for evaluating efficiency of a PM2.5 turbulence agglomerating device. The device comprises an axial flow fan, the gas feeding end of the axial flow fan is connected with an aerosol generator and a flue gas generating device, and the gas discharging end of the axial flow fan communicates with a front-section flue; the tail end of the front-section flue and the frontend of a tail flue communicate through an experimental-section flue, and the PM2.5 turbulence agglomerating device is mounted in the experimental-section flue; a plurality of testing notches are formed in the sides of the front-section flue and the tail flue, and a first anemometer, a second anemometer, an electrical low-pressure impactor and a smoke sampler are arranged at all the testing notches correspondingly; and the first anemometer and the second anemometer are used for collecting the air speed in the front-section flue and the tail flue, the electrical low-pressure impactor is used for collecting total dust distribution in the front-section flue and the tail flue, and the smoke sampler is used for collecting particle size distribution in the front-section flue and the tail flue. The device can judge the agglomerating effect of turbulence blades of different structures and arrangement forms on PM2.5 particles under the different flue gas environments, and guidance is provided for reasonable selection of the structures and arrangement forms of the turbulence blades.

Description

technical field [0001] The present invention relates to a PM 2.5 The utility model relates to an evaluation device for the efficiency of a turbulence agglomerator, which belongs to the technical field of environmental protection. Background technique [0002] by PM 2.5 The smog weather caused by pollution has become a prominent atmospheric environmental problem in my country; coal-fired emissions represented by coal-fired power stations and industrial boilers are the main source of PM in the atmosphere in my country 2.5 one of the main sources of . At present, the total particulate matter control technology can reach a very high level, but due to PM 2.5 Small particle size, for PM 2.5 The capture rate is very low, resulting in a large number of PM 2.5 into the atmosphere. Therefore, enhanced PM 2.5 The development direction of removal technology is mainly to set up pretreatment measures in front of conventional dust removal facilities, so that they can grow into large...

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Problems solved by technology

Invention patent CN104888573A has designed a device and method to promote the accumulation and growth of fine particles. The spoiler blades are triangular, tile-shaped, wedge-shaped, diamond-shaped, "S"-shaped, "Z"-shaped, rectangular, elliptical and streamlined. One or more combinations in the shape; patents CN102000472A and 201832533U respectively proposed the structure of different turbulent agglomeration devices. The influence of the arrangement of vortex slices and spoiler cylinders on the agglomeration effect was studied, and a new type of turbulent flow coalescer was proposed. The effect of vortex generation is good, but the disadvantage is that the resistance formed by such setting is relatively large; In the turbulent agglomeration process, it uses a turbulence device composed of large and small vortex plates. Although the combination of large and small vortex plates can generate more vortices, due to the existence of baffles and the increase in the number of spoiler columns, the resistance increases. more

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