Visual high-temperature fluidized bed

Abstract

The invention discloses a visual high-temperature fluidized bed. The fluidized bed is provided with a visual window, and high-temperature-resistant quartz glass covers the visual window which is sealed by a high-temperature-resistant sealing gasket; a radiation shield is arranged outside the visual window, infrared ray resisting glass is arranged on the exterior of the radiation shield, and a fluidization and reaction phenomenon in the bed is observed through the infrared ray resisting glass and the high temperature resistant quartz glass. The visual high-temperature fluidized bed provided by the invention firstly provides an experimental apparatus for observing a gas-solid flow characteristic under a high-temperature operation state; the operation bed temperature of the related visual high-temperature fluidized bed can achieve more than 850 DEG C, the high-temperature fluidized bed is provided with the visual window, a fluidization reaction phenomenon is visually shot or observed through a CCD (Charge Coupled Device) high speed camera, a camera or naked eyes, and the visual high-temperature fluidized bed is beneficial to research of fluidized bed gas-solid flow and reaction mechanism; meanwhile, a sealing and radiation protection measure is adopted, the safe operation of the fluidized bed is guaranteed, heat loss possibly caused by the visual window can be reduced furthest.

Description

technical field [0001] The invention relates to a visualized high-temperature fluidized bed, which is especially suitable for direct observation of fluidization and reaction phenomena under high-temperature conditions. Background technique [0002] The gas-solid fluidized bed has very high heat and mass transfer rates, and is widely used in petrochemical, energy, food and pharmaceutical processing and other fields. In the fluidized bed process, the acquisition of fluidized dynamic characteristics, including fluidized morphology, flow behavior of single particles and particle groups, movement of air bubbles and material flocs, plays a key role in the design, operation and mechanism research of the fluidized bed. effect. Through the direct observation of fluidization dynamics and reaction phenomena in the bed and the image processing after shooting, it is possible to obtain the fluidization form in the bed, the trajectory of single particles and particle groups, the process o...

AI Technical Summary

Problems solved by technology

Due to the opacity of steel, refractory and thermal insulation materials, direct visual observation and shooting cannot be realized. At present, there is no dedicated visual high-temperature fluidized bed test bench

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