Sheet combination type structure of photocatalyst carrier

Abstract

The invention publishes a lamella assembled light accelerant carrier structure, the carrier structure puts several pieces of thin steel plates together according to certain geometrical shape round the ultraviolet source, the ultraviolet source locates at the central location of geometrical shape, each piece of thin steel plate surface carries the light accelerant, between various thin steel plates leaves gap for the fluid flow. The carrier structure could fully use the ultraviolet ray straight line dissemination characteristic to obtain the ultra big ultraviolet ray illumination ratio surface area of the light accelerant carrier, simultaneously through increasing the thin steel plate number or developing the thin steel plate leaf blade size to adjuste the arrangement position of the thin steel plate correspondingly, obtains the bigger ultraviolet radiation ratio surface area, when the structure applied in the pollutant processing system, it could obtain the higher processing efficiency, provides the technical support for the pollutant processing system by light accelerant.

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...

AI Technical Summary

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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