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Fresh air and indoor air purification integrated device and purification method

A technology of indoor air and outdoor air, applied in the field of air purification, can solve the problems of ozone by-products, inability to continue working, single function, etc., and achieve the effect of strengthening carrier adsorption

Inactive Publication Date: 2017-05-10
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the treatment methods of air purifiers can be divided into filter type, adsorption type, complexation type, chemical catalytic type, photocatalytic type, electrostatic type, negative ion type, and plasma type. The current air purification technology has a single function and limited efficacy, mainly focusing on particulate matter However, there is no effective and economical method to eliminate carcinogenic, pathogenic benzene series and formaldehyde and other gaseous pollutants and infectious bacteria that are more harmful to the human body
For example, the adsorption method can only enrich some gaseous pollutants rather than degrade them, and cannot continue to work after the adsorption is saturated, and it is easy to breed bacteria
In recent years, the emerging negative ion technology can only remove inhalable particles, while the plasma technology has disadvantages such as high energy consumption and ozone by-products
UV or ozone technology alone is a common air disinfection method, but its oxidation ability is limited, and it cannot kill many stubborn bacteria and viruses and degrade gaseous molecular pollutants
In addition, UV exists and cannot be irradiated to the area, and if the residual ozone is not eliminated, it will cause secondary pollution
There are inherent defects in the existing technologies. To achieve the treatment of pollutants, a large number of treatment methods need to be combined, the structure is complex and the cost is high, and it is difficult to meet the urgent requirements of the current air pollution purification.

Method used

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  • Fresh air and indoor air purification integrated device and purification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Example 1 0.1%Pt-0.1%MnO-40%TiO 2 - AC (T400)

[0064] An air purification material for gaseous pollutants, with activated carbon as the carrier, other components accounted for by mass fraction of the adsorption material: titanium dioxide 40%; manganese oxide 0.1%; platinum 0.1%.

[0065] The specific preparation steps are as follows: Dissolve 0.0134g of manganese acetate in 15mL of absolute ethanol, then add 3g of activated carbon, and stir thoroughly; add 2.5mL of tetrabutyl titanate, 0.1mL of concentrated hydrochloric acid, 0.05mL of acetylacetone, 1.5375mL, 0.01M Chloroplatinic acid solution, fully stirred, recorded as solution A; take 1mL of absolute ethanol and 0.7mL of pure water and mix to make solution B; gradually drop solution B into the vigorously stirred solution A, and stir until it is in a gel state; The materials were aged at room temperature for 12 hours, and then dried at 120°C for 11 hours. Put the dried material into a muffle furnace and bake at 40...

Embodiment 2

[0066] Example 2 0.1%Pt-1%MnO-60%TiO 2 - AC (T600)

[0067] An air purification material for removing gaseous pollutants, with activated carbon as the carrier, other components accounted for by mass fraction of the adsorption material: titanium dioxide 60%; manganese oxide 1%; platinum 0.1%.

[0068] The specific preparation steps are as follows: dissolve 0.1338g of manganese acetate in 19mL of absolute ethanol, then add 3g of powdered activated carbon, and stir thoroughly; add 7.2mL of tetrabutyl titanate, 0.1mL of concentrated hydrochloric acid, 0.05mL of acetylacetone, and a molar concentration of 1.5375mL It is 0.01mol / L chloroplatinic acid solution, fully stirred, and recorded as solution A; mix 1mL of absolute ethanol and 1mL of pure water to make solution B; gradually drop solution B into the vigorously stirred solution A, and stir until gel State: The material obtained above was aged at room temperature for 14 hours, and then dried at 120° C. for 12 hours. Put the dr...

Embodiment 3

[0069] Example 3 0.5%Pd-0.1%MnO-20%TiO 2 - Zeolite (T500)

[0070] An air purification material for removing gaseous pollutants, with zeolite as the carrier, other components accounted for by mass fraction of the adsorption material: titanium dioxide 20%; manganese oxide 0.1%; palladium 0.5%.

[0071]The specific preparation steps are as follows: Dissolve 0.0134g of manganese acetate in 15mL of absolute ethanol, then add 3g of zeolite and stir thoroughly; add 2.6mL of tetrabutyl titanate, 0.1mL of concentrated hydrochloric acid, 0.05mL of acetylacetone, 6.3mL, 0.0242M Palladium chloride aqueous solution, fully stirred, recorded as solution A; 1mL absolute ethanol and 0.7mL pure water were mixed to make solution B; solution B was gradually dripped into solution A which was vigorously stirred, and stirred until it was in a gel state; The obtained material was aged at room temperature for 12 hours, and then dried at 120° C. for 10 hours. Put the dried material into a muffle fur...

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Abstract

The invention provides a fresh air and indoor air purification integrated device. The device comprises an outdoor air purification chamber and an indoor circulating air purification chamber which are arranged in parallel; a fan is arranged on one sides, away from an air inlet, of the outdoor air purification chamber and the indoor circulating air purification chamber; a high-voltage electrostatic dust collector, an ozone catalyst layer and a heat exchanger are arranged in an air inlet of the outdoor air purification chamber in sequence; a high-voltage electrostatic dust collector, a high-powered ultraviolet lamp and a photocatalysis layer are arranged in an air inlet of the indoor circulating air purification chamber in sequence. Aiming at the differences of characteristics such as the kind and the concentration of outdoor and indoor air pollutants, the problems that traditional air purification functions are simple and not thorough in degradation, and secondary pollution exists are solved by flexibly adopting purification methods, and the function that a catalytic material catalyzes the typical pollutant formaldehyde in an oxidizing chamber at the normal temperature is sufficiently utilized; and in addition, the efficient mineralization effect of catalytic ozonation can be utilized, ozone resource wasting is avoided, indoor oxygen aeration is achieved, and the fresh air and indoor air purification integrated device can be widely applied to the indoor air purification field.

Description

technical field [0001] The invention relates to the technical field of air purification, and more specifically, relates to an integrated device and purification method for fresh air and indoor air purification. Background technique [0002] Since the winter of 2012, smog has frequently raged over Beijing and the vast central and eastern regions of China, affecting an area of ​​up to 1.9 million square kilometers, and major cities across the country have suffered greatly. At present, my country's air pollution situation is still very serious, and the concentration of total suspended particulate matter in the urban air environment generally exceeds the standard. my country's atmospheric PM2.5 concentration far exceeds most other regions in the world, and exceeds the PM2.5 concentration guideline value and transition period target value given by the World Health Organization (WHO). On November 16, 2015, the international environmental protection organization Asia Clean Air Cen...

Claims

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Application Information

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IPC IPC(8): F24F7/007F24F13/28F24F13/00F24F13/30B01D53/86
CPCB01D53/32B01D53/8668F24F7/007F24F13/00F24F13/28F24F13/30B01D2257/708B01D2258/06B01D2259/818
Inventor 黄海保叶信国刘高源
Owner SUN YAT SEN UNIV
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