A kind of catalyst particle for air purifier and its layer-by-layer overmolding method

A catalyst particle and catalyst layer technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, catalyst protection, etc., can solve problems such as difficult automatic control, and achieve improved purification efficiency, high catalytic efficiency, and increased contact area. Effect

Active Publication Date: 2018-03-06
UCHEER PURIFICATION & POLLUTION CONTROL TECH ZHEJIANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is difficult to achieve precise automatic control

Method used

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  • A kind of catalyst particle for air purifier and its layer-by-layer overmolding method
  • A kind of catalyst particle for air purifier and its layer-by-layer overmolding method
  • A kind of catalyst particle for air purifier and its layer-by-layer overmolding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Add 2g of water to 2g of diatomaceous earth, sieve the obtained core after the mixing is completed, take 0.4-0.6mm particles and add them to the sugar coating machine, and the rotation speed is 30 rpm. Add silica sol with a mass solubility of 20% at a rate of 2mL / min, and at the same time add catalyst powder at a rate of 5g / min, and collect 1.5-1.8mm particles through online detection to enter the next coating process. Add the above granules to another sugar-coating machine operating at the same speed, add silica sol with a mass solubility of 20% at a rate of 2mL / min, and simultaneously add activated carbon powder at a rate of 20g / min, and collect 2 -3mm particles. Add the above-mentioned collected granules to a drum dryer at 90°C and a rotating speed of 5r / min for drying and polishing, and take out the dried granules after 30 hours to be the final product.

[0060] Through BET test (see table 1), show that prepared catalyst particle specific surface area is at 550-700...

Embodiment 2

[0063] Add 1.5g of water to 1.5g of sepiolite, sieve the obtained core after the mixing is completed, take 0.4-0.6mm particles and add them to the sugar coating machine, and the rotation speed is 35 rpm. The CMC aqueous solution with a mass solubility of 20% was added at a rate of 5mL / min, and the catalyst powder was added at a rate of 5g / min at the same time, and particles of 1.5-1.8mm were collected by online detection to enter the next coating process. Add the above granules to another sugar coating machine running at the same speed, add a CMC aqueous solution with a mass solubility of 20% at a rate of 5mL / min, and simultaneously add silicon micropowder at a rate of 18g / min, and collect 2 -3mm particles. Put the above-mentioned collected granular products into a drum dryer with a temperature of 120°C and a rotational speed of 4 r / min for drying and polishing, and take out the dried particles after 20 hours to be the final product.

[0064] The performance test of the parti...

Embodiment 3

[0066]Add 1g of water to 1g of diatomaceous earth, sieve the obtained core after the mixing is completed, take 0.4-0.6mm particles and add them to the sugar coating machine, and the rotation speed is 20 rpm. Alumina sol with a mass solubility of 20% was added at a rate of 1 mL / min, and catalyst powder was added at a rate of 5 g / min, and particles of 1.5-1.8 mm were collected by online detection to enter the next coating process. Add the above granules to another sugar-coating machine operating at the same speed, add alumina sol with a mass solubility of 20% at a rate of 1mL / min, and add diatom mud at a rate of 15g / min at the same time, and pass the online detection Collect particles of 2-3 mm. Add the above-mentioned collected granules to a drum dryer with a temperature of 100°C and a rotational speed of 3r / min for drying and polishing, and take out the dried granules after 28 hours to be the final product.

[0067] The particle performance test is the same as in Example 1. T...

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Abstract

The invention provides a catalyst particle for an air purifier and a layer-by-layer overmolding method thereof. In the process of particle forming, the core-shell structure is obtained by layer-by-layer coating process, clay mineral material is selected as the core, and the catalyst is coated outside the core, and then safe and harmless inorganic porous materials such as activated carbon are used as the skeleton material to coat the In the outermost layer, a non-deteriorating inorganic binder is used in the coating process to obtain spherical catalyst particles with uniform particle size, high catalytic activity, and non-deteriorating and mildew-free storage at room temperature for a long time. The particle forming method adopts automatic control of the material addition rate to ensure the uniformity of the particle structure. The spherical catalyst particle prepared by the invention has the characteristics of high catalytic efficiency, non-perishability, uniform particle size, safety and health.

Description

technical field [0001] The invention belongs to the field of catalyst production for air purification, and more specifically relates to a catalyst particle for an air purifier and a layer-by-layer coating molding method thereof. Background technique [0002] Due to their excellent catalytic properties, nanoscale metal oxide catalytic materials are widely used in the field of catalysis, especially in the catalytic decomposition of volatile harmful gases in the room at room temperature, such as formaldehyde, benzene, and diformaldehyde. In practical applications, the factors that affect the application performance of the catalyst include the catalyst's own performance and the physical and chemical indicators of the carrier (including specific surface area, pore diameter, pore volume, strength and surface properties, etc.), the dosage form of the catalyst on its application performance (such as Wind resistance, pressure drop, etc.) also have a significant impact. [0003] In t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/16B01J33/00B01J35/10B01J37/02B01D53/86B01D53/72
Inventor 黄建国肖鸽王伟胡灯红
Owner UCHEER PURIFICATION & POLLUTION CONTROL TECH ZHEJIANG CO LTD
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