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Treatment process combining absorption with infrared induction catalytic regeneration for indoor organic pollutants

A technology of organic pollutants and treatment process, which is applied in the field of various organic pollutants, adsorption and infrared-induced catalysis, and achieves the effect of high adsorption performance

Inactive Publication Date: 2016-12-07
杭州朱庇特环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the shortcomings of the existing indoor low-concentration organic pollutant treatment technology, the present invention combines the latest low-temperature catalytic degradation organic pollutant technology and infrared-induced catalytic regeneration treatment technology to propose a method suitable for indoor formaldehyde and other low-concentration (5mg / m 3 Within) treatment process for long-term effective removal of organic pollutants

Method used

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  • Treatment process combining absorption with infrared induction catalytic regeneration for indoor organic pollutants

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Effect test

Embodiment 1

[0066] Nanoporous adsorption catalyst material is δMnO 2 / activated carbon, the δMnO 2 Mix it with activated carbon according to the mass ratio of 0.2:1 and add it into deionized water, stir vigorously and mix evenly, and after suction filtration, dry at 50-100°C for 4-12 hours to obtain δMnO 2 / activated carbon. The infrared absorbing material used is Fe 3 o 4 , the mass ratio of the adsorption catalytic material to the infrared absorption material is 0.5, the organic pollutant is formaldehyde, the test space velocity is 50000 / h, and the imported formaldehyde concentration is 5mg / m 3 , the test results show that at room temperature (25°C) the time for the porous material to maintain a high adsorption performance is 80h. After the adsorption is saturated, it is irradiated with an infrared lamp and maintained for 1.2h, and the formaldehyde removal rate is stable above 98%.

Embodiment 2

[0068] The nanoporous adsorption catalyst material is nano-Pd particles / activated carbon. Mix the nano-Pd particles and activated carbon into deionized water according to the mass ratio of 0.1:1, stir vigorously and mix evenly, and dry at 50-100°C for 4-12 hours after suction filtration to obtain nano-Pd Granular / activated carbon. The infrared absorbing material used is nano-gold particles, the mass ratio of the adsorption catalytic material to the infrared absorbing material is 0.8, the organic pollutant is formaldehyde, the test space velocity is 100000 / h, and the imported formaldehyde concentration is 5mg / m 3, the test results show that at room temperature (25°C) the time for the porous material to maintain a high adsorption performance is 20 hours. After the adsorption is saturated, it is irradiated with an infrared lamp and maintained for 0.8 hours, and the formaldehyde removal rate is stable above 98%.

Embodiment 3

[0070] The nanoporous adsorption catalyst material is nanometer Pt particles / γAl 2 o 3 , the nano-Pt particles and γAl 2 o 3 According to the mass ratio of 0.2:1, mix and add to deionized water, stir vigorously to mix evenly, and after suction filtration, dry at 50-100°C for 4-12 hours to obtain nano-Pt particles / γAl 2 o 3 . , the infrared absorbing material used is nano-Rh particles, the mass ratio of the adsorption catalytic material to the infrared absorbing material is 1.5, the organic pollutant is formaldehyde, the test space velocity is 200000 / h, and the imported formaldehyde concentration is 5mg / m 3 , the test results show that at room temperature (25°C) the time for the porous material to maintain a high adsorption performance is 60 hours. After the adsorption is saturated, it is irradiated with an infrared lamp and maintained for 1 hour, and the formaldehyde removal rate is stable above 98%.

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Abstract

The invention discloses a treatment process combining absorption with infrared induction catalytic regeneration for indoor organic pollutants. The treatment process comprises the following steps that 1, indoor air is introduced into a particle filter layer through a draught fan to remove particles; 2, filtered air enters a reaction chamber, pollutant adsorption and enrichment are conducted on a nanoporous adsorption catalytic material, the concentration of pollutants at an outlet of the reaction chamber is monitored through a monitor simultaneously, when the monitor displays that the concentration at the outlet exceeds a preset value, the draught fan stops, infrared lamps in the reaction chamber are started for illumination, and an infrared absorption material absorbs infrared rays in situ and converts the infrared rays into a heat-driven nanoporous catalytic material to conduct catalytic conversion on the organic pollutants; 3, after the infrared induction catalytic oxidation process is finished, infrared heating is stopped, the draught fan is started again, and circulation is conducted from the first step. The treatment process is suitable for long-term effective removal for low concentration (within 5 mg / cm<3>) organic pollutants such as indoor formaldehyde.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a purification process of indoor air pollutant adsorption combined with infrared-assisted catalytic regeneration, and in particular to a process for removing formaldehyde and other organic pollutants in the air by combining adsorption and infrared-induced catalysis . Background technique [0002] Organic pollutants in indoor air mainly come from building decoration materials, daily chemicals and personal life behavior. Formaldehyde, benzene, toluene, etc. are the main indoor organic pollutants, which are very harmful to the human respiratory system and nervous system. At present, the control measures of indoor organic pollutants mainly include adsorption method, photocatalysis method and low temperature plasma method. The adsorption method has wide applicability, strong enrichment ability, and high removal efficiency, but there is a problem of adsorption saturati...

Claims

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Application Information

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IPC IPC(8): B01D53/04
CPCB01D53/04B01D53/0454B01D2257/70B01D2257/7027B01D2258/06B01D2259/40083B01D2259/40098B01D2259/4508
Inventor 王海强刘越翁小乐孙永良王波
Owner 杭州朱庇特环境科技有限公司
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