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Device for photocatalytic removal of volatile organic and inorganic contamination as well as microorganisms especially from automobile air conditioning systems

An air-conditioning system, photocatalytic technology, applied in irradiation, disinfection, etc., can solve the problem of reducing dust oxidation efficiency

Inactive Publication Date: 2016-01-06
布迪特里希公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, dust on the lamps leads to non-uniform transmission of rays to the surface of the photocatalyst, thereby reducing the efficiency of dust oxidation

Method used

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  • Device for photocatalytic removal of volatile organic and inorganic contamination as well as microorganisms especially from automobile air conditioning systems
  • Device for photocatalytic removal of volatile organic and inorganic contamination as well as microorganisms especially from automobile air conditioning systems
  • Device for photocatalytic removal of volatile organic and inorganic contamination as well as microorganisms especially from automobile air conditioning systems

Examples

Experimental program
Comparison scheme
Effect test

example I

[0045] Obtain a photocatalytic layer.

[0046] 350cm in cyclohexane 3 The 0,2MAOT (sodium diethylsuccinate) was added at a molar ratio of 0.5:0.1 with 1.44cm 3 An aqueous solution of silver nitrate and potassium chloroplatinate (IV). The whole mixture was mixed for 30 minutes under an inert gas atmosphere and then a precursor of titanium dioxide tetraisopropyl titanate (TIP) was introduced. The internal phase microemulsion containing metal ions was added with 150cm 3 A microemulsion prepared as a 0,2 MAOT (sodium diethylsuccinate) solution in cyclohexane containing dispersed phase sodium borohydride as reducing agent. A 3-fold excess of reducing agent was applied relative to the molar amount of metal. The obtained Pt / Ag nanocomposites were spaced apart, rinsed with acetone and water, dehydrated at a temperature of 80°C and calcined at a temperature of 350°C for 3 hours. The structure obtained is of the bimetallic alloy type provided on the surface of titanium dioxide.

...

example II

[0050] Obtain a photocatalytic layer.

[0051] Based on TiO 2 The photocatalytic layer 4 is modified by platinum. relative to TiO 2 The mass platinum content is 0.1% by weight. The photocatalyst was obtained due to the addition of an aqueous solution of potassium(IV) chloroplatinate to isopropanol. Next, the material is added with a precursor of titanium dioxide tetraisopropyl titanate (TIP). The obtained sol was dehydrated at a temperature of 80°C and calcined at a temperature of 450°C for 3 hours. Next, the photocatalyst is cured using a method of immersion on the surface of the ceramic material and placed in the device as a plate-shaped member 1 . LEDs, ie LEDs emitting UV and Vis (intensity: 8mW / cm 2 ) is used as the light source 7. Such as Figure 9 As shown in , the spacer element 3 is arranged directly through the carrier element 2 and terminates on both sides with the plate element 1 . Light sources 7 are placed on both sides of the carrier element 2 .

[005...

example III

[0055] Obtain a photocatalytic layer.

[0056] 500cm in cyclohexane 3 0,2MAOT added with 0,5cm 3 Potassium chloroplatinate (IV) and hydrogen tetrachloroaurate (III) in water. The whole mixture was mixed under an inert gas atmosphere and then added with a second microemulsion containing the reducing agent-sodium borohydride dispersed in the aqueous phase of the water-AOT-cyclohexane microemulsion. A 3-fold excess of reducing agent was applied relative to the molar amount of metal. TiO 2 The nanocomposites were spaced apart, dehydrated at a temperature of 80°C and calcined at a temperature of 450°C. relative to TiO 2 The molar metal content is 0.1 mole % Pt and 0.5 mole % Au.

[0057] TiO modified by Au and Pt 2 The composed photocatalytic layer 4 was applied in suspension with a brush on the surface of a glass mat impregnated earlier by tetraethylorthosilicate (TEOS), and as Figure 11 is shown placed on a gasket 3 (shaped as part of the side wall of a concertina-folded...

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Abstract

The device for photocatalytic removal of volatile organic and inorganic contaminations as well as microorganisms especially from air conditioning systems of mechanical vehicles consisting of a plate element applied with a photocatalytic layer as well as a load-carrying element holding a light source in the form of LED diodes emitting UV light, preferably UV-A and / or UV-C, given that between the load-carrying element and the plate element created there is an arterial space, while the light source is mainly directed towards the layer in which the plate element (1) is isolated from the load-carrying element (2) with at least one spacer element (3), preferably applied with a photocatalytic layer. Preferably the external load-carrying element (2) or the external plate element (1) is equipped with a fastening element and the light source (7) consists of LEDs emitting UV is light with wavelength from 410 to 460 nm. The photocatalyst consists of nanotubes made of titanium dioxide modified with metals, preferably precious metals, obtained electro-chemically or nanocomposites made of titanium dioxide modified with metals, preferably precious metals, received using the microemulsive method.

Description

technical field [0001] none Background technique [0002] The object of the present invention is a device for the photocatalytic removal of volatile organic and inorganic pollutants and microorganisms, in particular from automotive air conditioning systems. The invention can also be applied in air-conditioning systems of other motor vehicles and in small ventilation systems. [0003] Known air cleaning plants can be divided according to the volume of the stream being cleaned into air ventilation and air conditioning plants assembled in process halls and rooms with a high traffic volume and small air conditioning and ventilation plants, between which we can distinguish intended for degradation A device for pollutants in automotive air conditioning systems. [0004] Application specification US5835840 describes a system for the photocatalytic purification of air in rooms. The inside of the reactor is covered with a titanium dioxide layer. The recommended air humidity is 50...

Claims

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Application Information

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IPC IPC(8): A61L9/20
CPCA61L9/205A61L2209/16
Inventor 维托尔德·迪特里希阿德里安娜·扎莱斯卡安娜·泽林斯卡-尤雷克安娜·赛布拉安娜·格拉比哇卡艾薇丽娜·格拉波瓦卡乔安娜·瑞兹恩卡迈克尔·尼斯科马克·克莱恩
Owner 布迪特里希公司
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