Acousto-optic coupling annular gap photocatalytic fluidized bed VOCs degrading device

Abstract

The invention belongs to the field of gas-solid fluidized bed reactors, and relates to an acousto-optic coupling annular gap photocatalytic fluidized bed VOCs (volatile organic compounds) degrading device. A main body comprises a gas outlet, a gas inlet, a gas inlet pre-distribution plate (inner ring) and a catalyst grain baffle plate (outer ring), an organic glass tube, a quartz glass tube, an ultraviolet lamp, a reactor gas inlet distribution plate, a lamp tube mounting base, a test port, a loudspeaker, a fan, a gas collocation device, a sound wave amplifier, a signal generator, a gas collecting chamber, a gas premixing chamber, a gas inlet passage, an annular gap fluidized bed reaction area and a gas distribution chamber; and the devices form the photocatalytic gaseous contaminant VOCs degrading device with a columnar nested structure through principle reliability combination. The device has the advantages of wide operation area, reliable and convenient operation, simple regeneration of catalyst grains, low oxidation selectivity on gaseous contaminants, good treatment effect and prominent stable fluidization; and reactors can be connected in series or in parallel for use, and the device is suitable for high-concentration VOCs places.

Description

Technical field: [0001] The invention belongs to the field of gas-solid fluidized bed reactors, and relates to an acousto-optic coupling annular gap photocatalytic fluidized bed degradation device for VOCs, which is suitable for treating VOCs gaseous pollutants in living rooms, offices, large supermarkets, tunnels and other places. Background technique: [0002] A series of long-term survey results of the US Environmental Protection Agency (EPA) on indoor air quality (Indoor air quality, IAQ) show that in many civil and commercial buildings, the concentration of pollutants is several times to ten times that of the outdoor concentration. Even more than 100 times in buildings, but modern people spend 90% of their time indoors on average, which shows that the impact of indoor air quality on human health is far more important than outdoor air. In 1987, the US EPA confirmed that indoor air pollution is one of the greatest environmental crises. Therefore, the IAQ problem has attr...

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Problems solved by technology

The reproducibility of the catalyst particles improves the use value of the reactor, but the nano-titanium dioxide catalyst belongs to the Geldart C type particles, and there is a strong van der Waals force, which leads to serious particle agglomeration and channeling when the particles are fluidized, and even difficult to flow. change

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