Thin-plate composite type optical catalyst carrier structure

Abstract

The present invention discloses one kind of sheet combining photocatalyst carrier structure, which has spiral sheets carrying photocatalyst are configured around one shaft perpendicular to an ultraviolet light source with some gaps in between for the fluid to flow through. The said configuration makes it possible to utilize ultraviolet light at most for maximized ultraviolet light irradiated area. When the photocatalyst is used in pollutant treating system, high treating effect may be obtained.

Description

technical field [0001] The invention relates to components in a photocatalyst processor for filtering pollutant fluids, and more specifically refers to a thin-plate combined photocatalyst carrier structure. Background technique [0002] The photocatalytic properties of photocatalysts (such as nano-titanium dioxide) were discovered by Professor Fujiyu Akira in Japan in 1972, and have been extensively studied and applied so far. The basic principle of photocatalysis is: when semiconductor oxide (such as titanium dioxide) nanoparticles are irradiated by photons (such as ultraviolet light) with energy greater than the forbidden band width, electrons transition from the valence band to the conduction band, generating electron-hole pairs. Electrons are reducing, and holes are oxidizing. Holes react with OH- on the surface of oxide semiconductor nanoparticles to generate highly oxidizing OH radicals. Active OH radicals can oxidize many refractory organic compounds into CO2 and Ino...

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Problems solved by technology

[0004] In the existing photocatalyst processor, some commonly used carriers include metal foam, porous ceramic material, aluminum honeycomb filter screen, wire mesh, non-woven fabric, etc. These carriers have a high specific surface area, but these carriers themselves are There are many small branches in the shape of filaments, strips, blocks, and sheets that are interlaced and combined. These small branches in the form of filaments, strips, blocks, and sheets overlap and block each other. When irradiated with ultraviolet light When using a linear (column) light source (such as a straight ultraviolet lamp tube), in fact, due to the linear propagation characteristics of light, only the small branch blocks on the outermost side close to the light source can be irradiated by ultraviolet light, while The backlight surface of the small branch and many other small branches in the shadow formed by these small branches irradiated by ultraviolet light cannot be irradiated by ultraviolet light, so that the photocatalyst on it cannot be effectively excited. It affects the photocatalytic efficiency of the system, so the effective surface area of ​​these photocatalysts on photocatalyst carriers with high specific surface area is very small when irradiated by ultraviolet rays.

Therefore, under a certain volume, the above-mentioned carrier can no longer provide more effective surface area that can be irradiated by ultraviolet rays, forming a difficult bottleneck in the practical application of this photocatalyst technology.

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