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VOCs adsorption-electrothermal catalysis coupled functional component and preparation method thereof

A functional component and electric heating technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of inability to apply household air purifiers, high temperature, low thermal efficiency, etc., achieve good application prospects, reduce energy consumption, The effect of high thermal efficiency

Inactive Publication Date: 2019-10-11
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature of this type of device is too high and the thermal efficiency is too low to be used in household air purifiers with plastic components as the main structure

Method used

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  • VOCs adsorption-electrothermal catalysis coupled functional component and preparation method thereof
  • VOCs adsorption-electrothermal catalysis coupled functional component and preparation method thereof
  • VOCs adsorption-electrothermal catalysis coupled functional component and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] (1) Mix alumina powder, water and aluminum sol evenly to obtain a mixed solution, the mass ratio of alumina powder and aluminum sol is 2:1, apply the obtained mixed solution to the surface of the PTC resistor after ultrasonic cleaning, and dry at 140°C , and then calcined at 600 ° C for 1 h to obtain a base coating on the surface of the PTC resistor;

[0049] (2) Pd / AL 2 o 3 Catalyst (Pd 1wt%), water and aluminum sol are mixed uniformly to obtain mixed solution, the mass ratio of VOCs thermal catalyst and aluminum sol is 5: 1, the base coating of PTC resistance that gained mixed solution is evenly coated on step (1) The surface of the layer was dried at 140°C, and then calcined at 600°C for 2 hours to obtain a catalyst coating on the surface of the PTC resistor, that is, a VOCs adsorption-electrothermal catalytic coupling functional component. The structure of the obtained component is as follows image 3 and Figure 4 shown.

Embodiment 2

[0051] (1) Mix alumina powder, water and aluminum sol evenly to obtain a mixed solution. The mass ratio of alumina powder and aluminum sol is 1:1. Apply the resulting mixed solution to the surface of the PTC resistor after ultrasonic cleaning, and dry at 140°C , and then calcined at 500°C for 1.5h to obtain a base coating on the surface of the PTC resistor;

[0052] (2) Pt / AL 2 o 3 Catalyst (Pt 1wt%), water and aluminum sol are mixed uniformly to obtain mixed solution, the mass ratio of VOCs thermal catalyst and aluminum sol is 4:1, the base coating of the PTC resistance that gained mixed solution is evenly coated on step (1) The surface of the layer was dried at 140°C, and then calcined at 650°C for 1.5h to obtain a catalyst coating on the surface of the PTC resistor, that is, a VOCs adsorption-electrothermal catalytic coupling functional component.

Embodiment 3

[0054] (1) Mix silicon oxide powder, water and silica sol evenly to obtain a mixed solution. The mass ratio of silicon oxide powder and silica sol is 3:2. Apply the obtained mixed solution to the surface of the PTC resistor after ultrasonic cleaning, and dry at 140°C , and then calcined at 800°C for 0.5h to obtain a base coating on the surface of the PTC resistor;

[0055] (2) Rh / SiO 2 Catalyst (Rh 1wt%), water and silica sol are mixed uniformly to obtain mixed solution, the mass ratio of VOCs thermal catalyst and silica sol is 8:1, the base coat of the PTC resistance that gained mixed solution is coated on step (1) obtains evenly The surface of the layer was dried at 140°C, and then calcined at 500°C for 2.5h to obtain a catalyst coating on the surface of the PTC resistor, that is, a VOCs adsorption-electrothermal catalytic coupling functional component.

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Abstract

The invention relates to a VOCs adsorption-electrothermal catalysis coupled functional component and a preparation method thereof. The component uses a PTC resistor as the framework, and a VOCs thermal catalyst is loaded onto the PTC resistor. The component is prepared by preparing a substrate coating layer on the surface of the PTC resistor and loading the VOCs thermal catalyst onto the surface of the substrate coating layer of the PTC resistor. The VOCs adsorption-electrothermal catalysis coupled functional component and the preparation method thereof have the advantages that the VOCs thermal catalyst is loaded onto the constant-temperature-heating PTC resistor, and VOCs can be decomposed through direct thermal catalysis in a temperature range of 200-300 DEG C; compared with a traditional split resistance wire which heats the air to catalytically decompose VOCs, the component is capable of greatly lowering energy consumption, increasing energy utilization rate and increasing safety and good in economic benefits; the preparation method is simple in process, and the prepared component is small and exquisite, high in heat efficiency, applicable to devices such as domestic air purifiers, fresh air purifiers and range hoods and promising in application prospect.

Description

technical field [0001] The invention relates to the field of organic matter purification, in particular to a VOCs adsorption-electrothermal catalysis coupling functional component and a preparation method thereof. Background technique [0002] VOCs (Volatile Organic Compounds) Building decoration materials will release volatile organic compounds (VOCs), and the release period is as long as several years. The World Health Organization (WHO) research shows that long-term exposure to high-risk VOCs containing formaldehyde and benzene series may cause cancer and leukemia. There are many types of VOCs in the home air, and the sources include the release of decoration materials and furniture, kitchen fume and so on. [0003] At present, the purification of VOCs in indoor air mainly adopts the activated carbon adsorption method, which has the advantages of being able to adsorb a variety of gases, being cheap, and easy to use, but the disadvantages are also obvious. The harmful gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/44B01D53/88
CPCB01D53/8687B01D53/88B01D2255/1021B01D2255/1023B01D2255/1025B01D2255/104B01D2255/106B01D2255/20707B01D2255/2092B01D2255/30B01D2257/708Y02A50/20
Inventor 姜风陈运法
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI