High efficiency renewable adsorption light-catalyzed reaction module for removing VOCs and working method of high efficiency renewable adsorption light-catalyzed reaction module

A photocatalytic reaction and high-efficiency technology, applied in the field of air purification, can solve the problems of long regeneration time of adsorbent, easy deactivation of adsorbent, low photocatalytic efficiency, etc., to reduce competitive adsorption, increase photocatalytic activity, and prolong deactivation. effect of time

Pending Publication Date: 2019-10-08
江苏中科睿赛环境工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned prior art does not load the photocatalyst to the adsorbent, and because the adsorption area is separated from the photocatalytic area, the photocatalytic efficiency is low and the adsorbent is easily deactivated; the adsorption-photocatalytic combination technology takes a long time to regenerate the adsorbent, The regeneration efficiency is low, the equipment occupies a large area, and the energy consumption is high

Method used

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  • High efficiency renewable adsorption light-catalyzed reaction module for removing VOCs and working method of high efficiency renewable adsorption light-catalyzed reaction module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, an efficient and reproducible adsorption photocatalytic reaction module for the removal of VOCs,

[0034] 1. The two sets of purification units are composed of two square reactors made of quartz glass, and the reactors are filled with nano-TiO 2 A total of four 254nm ultraviolet lamp tubes are installed between each square reactor;

[0035] 2. The air with a formaldehyde content of 1.0ppm is passed into the reaction module at a flow rate of 5mL / min; the first air inlet negative pressure device control unit 3 controls the first air inlet negative pressure device 111 to open, and the second air inlet negative pressure device 111 is opened. The pressure device control unit 23 controls the negative pressure device 211 at the second air intake end to close, and the waste gas enters the first purification unit. Under the synergistic effect of adsorption and photocatalysis, the formaldehyde removal rate is above 90%, the first regulating valve 6 is ...

Embodiment 2

[0039] An Efficient and Renewable Adsorption Photocatalytic Reaction Module for VOCs Removal

[0040] 1. Increase the two sets of purification units in Example 1 to four square reactors made of ordinary glass, and the reactor is filled with nano-TiO 2 Coal-based activated carbon, a total of 10 365nm ultraviolet lamp tubes are installed between each square reactor,

[0041] 2. Pass air with a formaldehyde content of 1.0ppm into the reaction module at a flow rate of 5mL / min, run the entire high-efficiency regenerative adsorption photocatalytic reaction module according to the operation mode of Example 1, and the formaldehyde removal rate is above 95%. The catalyst and adsorbent The regeneration effect is good, and it can run continuously for a long time.

Embodiment 3

[0043] An Efficient and Renewable Adsorption Photocatalytic Reaction Module for VOCs Removal

[0044] 1. The arrangement of the square reactor of the purification unit and the ultraviolet lamp in the reaction module is the same as that of Example 2, and the square reactor is filled with nano-TiO 2 zeolite molecular sieves.

[0045] 2. Pass a mixed gas containing 100 ppm of benzene, toluene and xylene into the reaction module at a flow rate of 5 mL / min. When the first purification unit performs the purification function, the module operates in the same manner as Example 1, and the removal rate of benzene, toluene and xylene is above 95%;

[0046] 3. After running for a period of time, the second purification unit performs the gas purification function, and the operation mode is the same as that of Example 1; at this time, the first purification unit performs regeneration of the adsorbent and photocatalysis, and the first air inlet negative pressure device control unit 3 Contr...

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Abstract

The invention discloses a high efficiency renewable adsorption light-catalyzed reaction module for removing VOCs and a working method of the high efficiency renewable adsorption light-catalyzed reaction module. The module comprises a plurality of groups of exhaust gas purification pipeline units, and the multiple groups of the exhaust gas purification pipeline units are of the same structure and are arranged parallelly; each group of the exhaust gas purification pipeline units comprises a gas inlet end negative pressure device, a gas inlet valve, an exhaust gas purification unit, a gas outletvalve and a gas outlet end negative pressure device which are sequentially connected through pipelines along the running of the exhaust gas; an additive throwing device is connected to a pipeline between each exhaust gas purification pipeline unit and the gas outlet valve through a branch pipe, the additive throwing device is used for throwing an additive to the exhaust gas purification pipeline unit to improve the regenerative efficiency of a photocatalytic regenerative adsorbent; an adjusting valve is arranged on the branch pipe in a concatenation mode; and a gas inlet branch pipe is arranged at the gas inlet end of the first negative pressure device on each group of the exhaust gas purification pipeline units, and the multiple gas inlet branch pipes are connected with exhaust gas pipesthrough gas inlet manifolds.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to an efficient and reproducible adsorption photocatalytic reaction module and a working method for removing VOCs. Background technique [0002] With the continuous development of my country's society and economy, air pollution is becoming more and more serious. At present, the treatment of volatile organic compounds (VOCs) has become the core content of air pollution control in the three major regions of my country. VOCs refers to any organic compound with a boiling point lower than 250°C at normal pressure, or a general term for all organic compounds emitted into the air in the form of gaseous molecules at room temperature (25°C) with a saturated vapor pressure exceeding 133.32Pa. It has caused great harm to the environment and human health. It has multiple environmental effects and can react with sulfur dioxide, nitrogen oxides, particulate matter and other oxidants in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/74B01D53/96
CPCB01D53/04B01D53/74B01D53/8668B01D53/96B01D2253/102B01D2253/108B01D2255/20707B01D2255/802B01D2257/708Y02A50/20
Inventor 岳仁亮沈晓玲齐丛亮李玉
Owner 江苏中科睿赛环境工程有限公司
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