JP4680168B2 - Gas purification device - Google Patents

Description

  The present invention generally relates to a gas purification device, and more particularly to a gas purification device that removes malodorous substances and harmful substances in the air, and bacteria and allergens.

  Conventionally, adsorption materials represented by activated carbon and zeolite have been used as a method for removing malodorous components in the air. However, when a simple adsorbing material is used for deodorization, there is a problem that the performance is lowered depending on the use time.

  In order to avoid such a problem, methods for improving the deodorizing performance using various chemical substances have been proposed.

  For example, in the deodorizing filter described in JP-A-5-38414 (Patent Document 1), 100 parts by weight of a resol-type phenol resin, 1 to 100 parts by weight of a compound that is oleophilic and has a boiling point of 100 ° C. or more at room temperature. An activated carbon porous body structure obtained by carbonizing and activating a cured product of a composition comprising 1 to 100 parts by weight of a liquid compound having a hydrophilicity and a boiling point of 100 ° C. or higher is used. Thus, it reacts with gas in a liquid state to realize a composition having excellent fluidity, and improves long-term deodorization performance.

In addition, for example, in Japanese Patent Application Laid-Open No. 2000-5544 (Patent Document 2), a deodorizer containing an adsorption medium such as activated carbon, zeolite, or silica gel and an ion exchange resin such as an alkali metal salt or an ammonium salt type acidic ion exchange resin is used. By using the used deodorizing filter, high deodorizing performance is realized.
Japanese Patent Laid-Open No. 5-38414 JP 2000-5544 A

  However, the deodorizing filter described in Japanese Patent Application Laid-Open No. 5-38414 (Patent Document 1) has a problem that the performance deteriorates due to the desorption of adsorbed malodorous components.

  Moreover, since the filter of 2000-5544 gazette (patent document 2) utilizes ion exchange, although it shows high performance in acidic gas or alkaline gas, it is expected to have an effect on hydrophobic organic compounds. I can't.

  Then, the objective of this invention is providing the gas purification apparatus which can maintain high deodorizing performance, without capturing the to-be-processed target component in air, and carrying out re-desorption.

  A gas purification apparatus according to the present invention includes a liquid resin material that causes radical polymerization, and radical generation means that generates radicals for radical polymerization of the liquid resin material, and is a component to be processed contained in the gas. Is brought into contact with the liquid resin material, and the component to be treated is captured by radical polymerization of the liquid resin material using radicals generated by the radical generating means.

  The radical generated by the radical generating means breaks the double bond portion of the liquid resin material and promotes the bond between the liquid resin material and another substance. Under such circumstances, the liquid resin materials polymerize with each other and start to solidify. By this action, the component to be processed taken into the liquid resin material from the gas is solidified together with the liquid resin material.

  By doing in this way, the gas purification apparatus which can maintain high deodorizing performance for a long period of time can be provided, without capturing the to-be-processed target component in air, and carrying out re-desorption.

  In the gas purification apparatus according to the present invention, the component to be treated is preferably an organic compound.

  The organic compound is oxidized by the radical generated by the radical generating means, and the bond is released. At the same time, the radical breaks the double bond portion of the liquid resin material and promotes the bond between the liquid resin material and another substance. Under such circumstances, the liquid resin materials are polymerized with each other and are also combined with the organic compound that is the control target component to start solidification. By this action, the organic compound taken in from the gas is solidified together with the liquid resin material.

  By doing in this way, since the organic compound trapped by the liquid resin material does not re-desorb from the liquid resin material, stable gas purification performance can be obtained for a long period of time.

  In the gas purification apparatus according to the present invention, the radical generating means is preferably an ultraviolet irradiator.

  By doing so, radicals can be generated in the liquid resin material.

  In the gas purification apparatus according to the present invention, the radical generating means is preferably a discharge element.

  By doing so, radicals can be easily generated.

  The gas purification apparatus according to the present invention preferably includes a net-like filter, and the liquid resin material is preferably applied to the filter with the viscosity adjusted so as to have fluidity.

  In this way, when the liquid resin material is polymerized, the radical polymerized and solidified portion settles, and a new liquid resin material that has not undergone radical polymerization appears on the surface, so high deodorization performance is achieved. Can be maintained.

  As described above, according to the present invention, it is possible to provide a gas purification device capable of maintaining high deodorization performance without capturing and re-desorbing a component to be processed in the air.

(First embodiment)
FIG. 1 is a diagram schematically showing an entire gas purification apparatus as a first embodiment of the present invention.

  As shown in FIG. 1, the gas purification apparatus 100 includes a wind tunnel 110 through which a gas containing a component to be processed flows, a blower fan 120 disposed inside the wind tunnel 110, and a discharge element 150 as radical generating means. And a filter 130. On the filter 130, a liquid resin material 140 whose viscosity is adjusted to have fluidity is applied. For example, the wind speed in the wind tunnel 110 is 1 m / second, the diameter of the wind tunnel 110 is 10 cm, and the length of the wind tunnel 110 in the direction in which the airflow flows is 30 cm.

  In the discharge element 150, creeping discharge electrodes on which tungsten electrodes are printed are arranged so as to face both sides of a 0.2 mm dielectric formed of ceramic. When an AC voltage having a peak voltage of 5 kV and a frequency of 10 kHz is applied between the creeping discharge electrodes of the discharge element 150, air containing radicals such as ozone and OH radicals is released.

  Thus, in the gas purification apparatus 100, the radical generating means is the discharge element 150, so that radicals can be easily generated.

  The filter 130 is an aluminum plate formed in a honeycomb shape as a net, and the liquid resin material 140 is a liquid mainly composed of urethane acrylate. It is known that urethane acrylate is polymerized and solidified by radicals. The liquid resin material 140 is mixed with particles obtained by pulverizing silica gel so as to easily adhere to the aluminum plate, and thus the viscosity is increased. In this embodiment, for example, the filter 130 has a thickness of 3 cm, the average pore diameter of the honeycomb of the filter 130 is 3 mm, and the liquid resin material 140 is applied on the filter 130 to a thickness of 0.5 mm. Yes.

  Thus, the gas purification apparatus 100 includes the filter 130, and the liquid resin material 140 is applied to the filter 130 with viscosity adjusted so as to have fluidity.

  By doing so, a portion of the liquid resin material that has been solidified by radical polymerization settles, and a new liquid resin material that has not undergone radical polymerization appears on the surface, thus maintaining high deodorization performance. can do.

  FIG. 2 is a diagram schematically showing the structure of urethane acrylate which is the main component of the liquid resin material of the present invention.

  As shown in FIG. 2, the urethane acrylate in the liquid resin material 140 is composed of acrylate 141, urethane 142, polyol 143, urethane 144, and acrylate 145. Since urethane acrylate has a double bond portion at the ends of acrylate 141 and acrylate 145, it binds or polymerizes with other molecules by the reaction of radicals. The urethane acrylate in the liquid resin material 140 has a plurality of double bond portions that contribute to radical polymerization. In addition, since the physical properties of urethane acrylate are determined by the structure of the polyol, the type of isocyanate for synthesizing the urethane, the number of acrylic groups, etc., the combination varies depending on the combination of the structure of the polyol, the type of isocyanate, the number of acrylic groups, etc. Physical properties of urethane acrylate can be designed.

  In the gas purification device 100 of FIG. 1, when the blower fan 120 is driven, a gas containing the component to be processed flows into the wind tunnel 110 from the outside of the gas purification device 100. The arrows in the figure indicate the direction of gas flow.

  By driving the discharge element 150, radicals are generated, and the generated radicals are mixed together with the component to be processed in the gas and come into contact with the liquid resin material 140 on the filter 130. Blend into. Dashed arrows in the figure indicate the direction of radical movement. In this embodiment, the discharge element 150 is arranged on the windward side of the filter 130, but by doing so, radicals can be brought into contact with the liquid resin material 140 more effectively. .

  The radicals dissolved in the liquid resin material 140 radically polymerize the liquid resin material 140, and the liquid resin material 140 is solidified. The component to be processed that has been taken into the liquid resin material 140 is solidified together with the liquid resin material 140. At this time, if an organic compound is contained as a component to be treated in the gas, urethane acrylate is also bonded to the organic compound. As such an organic compound, for example, substances such as formaldehyde, acetaldehyde, toluene and xylene are generally known. In this way, the component to be processed in the gas is captured in the solidified liquid resin material 140. Once the liquid resin material 140 is solidified, the captured component to be processed cannot return to the detached state.

  As described above, the gas purification apparatus 100 includes the liquid resin material 140 that generates radical polymerization and the discharge element 150 that generates radicals for radical polymerization of the liquid resin material 140, and is to be processed contained in the gas. The target component is captured by bringing the target component into contact with the liquid resin material 140 and radically polymerizing the liquid resin material 140 using radicals generated by the discharge elements 150.

  The radicals generated by the discharge element 150 break the double bond portion of the liquid resin material 140 and promote the bond between the liquid resin material 140 and another substance. Under such circumstances, the liquid resin materials 140 are polymerized with each other and start to solidify. By this action, the component to be processed taken into the liquid resin material 140 from the gas is solidified together with the liquid resin material 140.

  By doing in this way, the gas purification apparatus 100 which can maintain a high deodorizing performance for a long period of time, without capture | acquiring the to-be-processed target component in air | atmosphere and carrying out re-desorption can be provided.

  In the gas purification apparatus 100, the component to be processed is preferably an organic compound.

  The organic compound is oxidized by radicals generated by the discharge element 150, and the bond is released. At the same time, the radical breaks the double bond portion of the liquid resin material 140 and promotes the bond between the liquid resin material 140 and another substance. Under such circumstances, the liquid resin materials 140 are polymerized with each other and are also combined with an organic compound that is a control target component to start solidification. By this action, the organic compound taken in from the gas is solidified together with the liquid resin material 140.

  By doing in this way, since the organic compound captured by the liquid resin material 140 does not re-desorb from the liquid resin material 140, stable gas purification performance can be obtained for a long period of time.

  According to the present invention, dust in the air can be removed from the air by solidifying it together with the liquid resin material 140. Similarly, it is possible to remove bacteria and allergens in the air.

(Second embodiment)
FIG. 3 is a diagram schematically showing the entire gas purification device as a second embodiment of the present invention.

  As shown in FIG. 3, the gas purification apparatus 101 is different from the gas purification apparatus 100 in that it includes an ultraviolet lamp 160 as an ultraviolet irradiator instead of the discharge element 150 as radical generating means. The other points of the gas purification device 101 are the same as those of the gas purification device 100.

  Light having a wavelength of about 254 nm is emitted from the ultraviolet lamp 160, and radicals are generated in the liquid resin material 140 on the filter 130 to start radical polymerization of the liquid resin material 140.

  Examples of substances that can be converted into radicals in the liquid resin material 140 include organic compounds (formaldehyde, acetaldehyde, toluene, xylene, etc.) as components to be treated that are taken into the liquid resin material 140 from a gas, There is a solvent contained in the resin material 140. Further, the liquid resin material 140 may contain other substances that generate radicals by ultraviolet rays in advance. The radical generated by the above action reacts with the urethane acrylate in the liquid resin material 140 to cause a chemical reaction to dissociate the double bond of the urethane acrylate, and an organic compound is contained in the gas as a component to be treated. When contained, the bond in the organic compound taken in the liquid resin material 140 is released. Under such circumstances, the urethane acrylate and the organic compound in the liquid resin material 140 are combined and solidified as a whole.

  Thus, in the gas purification apparatus 101, radicals can be generated in the liquid resin material 140 by using the ultraviolet lamp 160 as the radical generating means.

  When the blower fan 120 is driven in the gas purification device 101, a gas containing the component to be processed flows into the wind tunnel 110 from the outside of the gas purification device 101. The arrows in the figure indicate the direction of gas flow.

  By driving the ultraviolet lamp 160, radicals are generated in the liquid resin material 140, and the generated radicals are mixed with the component to be processed in the gas and are dissolved in the liquid resin material 140. Dashed arrows in the figure indicate the direction of ultraviolet irradiation.

  The radicals generated in the liquid resin material 140 radically polymerize the liquid resin material 140, and the liquid resin material 140 is solidified. The component to be processed that has been taken into the liquid resin material 140 is solidified together with the liquid resin material 140. At this time, if an organic compound is contained as a component to be treated in the gas, urethane acrylate is also bonded to the organic compound. As such an organic compound, for example, substances such as formaldehyde, acetaldehyde, toluene and xylene are generally known. In this way, the component to be processed in the gas is captured in the solidified liquid resin material 140. Once the liquid resin material 140 is solidified, the captured component to be processed cannot return to the detached state.

  As described above, the gas purification apparatus 101 includes the liquid resin material 140 that generates radical polymerization and the ultraviolet lamp 160 that generates radicals for radical polymerization of the liquid resin material 140, and is to be processed contained in the gas. The target component is captured by bringing the target component into contact with the liquid resin material 140 and radically polymerizing the liquid resin material 140 using radicals generated by the ultraviolet lamp 160.

  The radicals generated by the ultraviolet lamp 160 break the double bond portion of the liquid resin material 140 and promote the bond between the liquid resin material 140 and another substance. Under such circumstances, the liquid resin materials 140 are polymerized with each other and start to solidify. By this action, the component to be processed taken into the liquid resin material 140 from the gas is solidified together with the liquid resin material 140.

  By doing in this way, the gas purification apparatus 101 which can maintain a high deodorizing performance for a long period of time, without capturing the component to be processed in the air and removing it again can be provided.

  Moreover, in the gas purification apparatus 101, the component to be processed is preferably an organic compound.

  The organic compound is oxidized by radicals generated by the ultraviolet lamp 160, and the bond is released. At the same time, the radical breaks the double bond portion of the liquid resin material 140 and promotes the bond between the liquid resin material 140 and another substance. Under such circumstances, the liquid resin materials 140 are polymerized with each other and are also combined with an organic compound that is a control target component to start solidification. By this action, the organic compound taken in from the gas is solidified together with the liquid resin material 140.

  By doing in this way, since the organic compound captured by the liquid resin material 140 does not re-desorb from the liquid resin material 140, stable gas purification performance can be obtained for a long period of time.

  In the above embodiment, urethane acrylate is used as the liquid resin material that generates radical polymerization. However, the liquid resin material that generates radical polymerization is not limited to urethane acrylate. Saturated polyester resins, polyacryl acrylate, and the like can also be used, and any material that promotes polymerization or reaction by radicals may be used.

  The liquid resin material that causes radical polymerization may be disposed in a liquid such as water. In that case, it is good also as a structure which circulates liquids, such as water, makes the to-be-processed component in air once taken in into liquids, such as water, and then contacts the to-be-processed component with the liquid resin material which produces radical polymerization. .

  Further, in the second embodiment of the present invention, an example in which radicals are generated by ultraviolet rays is shown, but another material that absorbs ultraviolet rays and generates radicals is mixed or arranged as an auxiliary material, and is generated thereby. It is good also as a structure using a radical.

  In addition, although the example in which the bond of the organic compound is released by the radical and bonded to the liquid resin material that causes radical polymerization has been described above, the bond of the organic compound does not necessarily have to be released, Gas purification by solidifying simultaneously with the solidification of the resin material is also included in the present invention.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

1 is a diagram schematically showing an entire gas purification device as a first embodiment of the present invention. It is a figure which shows the structure of the urethane acrylate used as a liquid resin material. It is a figure which shows roughly the whole gas purification apparatus as 2nd embodiment of this invention.

Explanation of symbols

  100, 101: Gas purification device, 130: Filter, 140: Liquid resin material, 150: Discharge element, 160: Ultraviolet lamp.

Claims (5)

A liquid resin material that causes radical polymerization;
Radical generating means for generating radicals for radical polymerization of the liquid resin material,
The component to be treated contained in the gas is brought into contact with the liquid resin material, and the component to be treated is captured by radical polymerization of the liquid resin material using radicals generated by the radical generation means. Gas purification device.   The gas purification device according to claim 1, wherein the component to be treated is an organic compound.   The gas purification apparatus according to claim 1, wherein the radical generation unit is an ultraviolet irradiator.   The gas purification apparatus according to claim 1, wherein the radical generation unit is a discharge element. With a mesh filter
The gas purification device according to any one of claims 1 to 4, wherein the liquid resin material is applied to the filter with viscosity adjusted so as to have fluidity.

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