JP2010194278A - Device for eliminating organic acid and acidic gas - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for eliminating organic acid and an acidic gas for preventing deterioration of microfilm due to organic acid generated from the microfilm that is stored in archives, museums, libraries, etc. <P>SOLUTION: Air in a storage room including organic acid such as an acetic acid gas generated from the microfilm is taken into a box-shaped body having an air intake port 9 and an air blowout port of the organic acid/acidic gas eliminating device comprising a pre-filter 11, an adsorption panel 10, a blower 13, and a middle to high performance filter 12. Air in the room including organic acid and the acidic gas such as acetic acid gas generated from the microfilm is cleaned by the device to be returned as clean air. Above processes are repeated to replace the air in the room with clean air. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an organic acid which prevents deterioration of the microfilm itself by an organic acid such as acetic acid gas generated from a microfilm stored as a document or image record in a storage room such as an archive, museum or library. The present invention relates to an acid gas removing device.

  Conventionally, various preservations have been made in order to leave valuable information recorded on a microfilm for future generations. However, in a storage room that repeatedly repeats temperature and humidity in a short period of time, it is extremely slow when a microfilm is stored for a long period of 25 to 30 years or more, particularly in the case of a TAC base based on a cellulose ester material. It has been found that a hydrolysis reaction takes place, and a slight amount of acetic acid is generated in the hydrolysis process and accumulated in the storage chamber, and when it reaches a certain level, it rapidly deteriorates.

  So, for example, it is stored in a storage container, placed in a place with the best possible environment, and the storage container contains a desiccant, etc., but it is controlled by checking the temperature and humidity, replacing the desiccant, and inspecting the film. In addition, it takes time and effort to manage, and it does not have a function to remove organic acids and acid gases such as acetic acid gas. Leakage caused microfilm degradation in the storage room.

  Furthermore, in order to keep the environmental conditions of the temperature and humidity of the storage room well, it has been tried to suppress the generation of organic acids and acid gases such as acetic acid gas by providing air-conditioning equipment in the room and maintaining the storage environment conditions by operating 24 hours a year. However, a sufficient effect cannot be expected yet, and it is difficult to suppress the deterioration of the microfilm.

Problems to be solved by the invention

  Accordingly, the present invention is intended to solve these problems, and a first object is to remove organic acids and acid gases such as acetic acid gas generated in the storage chamber generated from the microfilm.

  Another object of the present invention is to install an organic acid or acid gas removal device in the storage chamber, and simply press the operation switch of the organic acid or acid gas removal device. It is intended to reduce acid and acid gas concentrations.

  Another object of the present invention is to diffuse indoor air from blowing away distant air, such as acetic acid gas and other organic acids such as acetic acid gas, and dust and dust. It is intended to remove dust, pollen, and harmful gases that have been prevented from passing.

  Another object of the present invention is to provide a humidity control function, which is important for valuable documents, art storage, etc. by combining dust, pollen, harmful gas and humidity control function.

  Another object of the present invention is the removal of gas, dust, mold, and other microorganisms that can prevent the fouling of precious documents, artworks, etc. by providing antibacterial action and antibacterial and bactericidal effects such as adherent bacteria and mold. It is intended to enable sterilization, deodorization and degassing effects.

  Another object of the present invention is to make it possible to replace the prefilter and the medium / high performance filter or the adsorbent.

  Another object of the present invention is to freely move to a place where it is installed.

Means for solving the problem

  The first solution of the present invention is to remove organic acid and acid gas, characterized in that a pre-filter, an adsorption panel, a blower, and a medium-high performance filter are built in a box-shaped main body having a suction port and a blow-off port. I tried to provide a device.

  In the second solution of the present invention, an adsorption panel containing an adsorbent having a function of removing an organic acid such as acetic acid gas or an acid gas is attached to a frame provided in the main body in a flat plate shape or a zigzag shape. It is characterized by.

  The third solving means of the present invention is characterized in that a pre-filter is provided on the upstream side of the suction panel and a medium-high performance filter is provided on the downstream side of the suction panel.

  The fourth solution of the present invention is the use of a porous base material such as activated carbon or zeolite material, which is important for valuable documents, art storage, etc., and also has a humidity control function, dust, pollen, harmful gas It also has a humidity control function.

  The fifth solution of the present invention is precious by adding antibacterial / bactericidal agents such as silver zeolite to the pre-filter and medium / high performance filter, and having antibacterial action and antibacterial / bactericidal effects such as adhering bacteria / mold. It is characterized by the removal of gas, dust, mold, and other microorganisms and the sterilization, deodorization, and degassing effects that can prevent the fouling of documents and artworks.

  The sixth solving means of the present invention is characterized in that an operating hour meter monitor serving as an indicator for replacement is provided in the pre-filter and the medium-high performance filter or the adsorbent.

  The seventh solving means of the present invention is characterized in that an air suction port is formed in the lower portion of the main body, a blow-out port is formed in the upper portion, and a caster is attached to the bottom portion.

Here, the adsorbent having a function of removing an organic acid such as acetic acid gas or an acid gas is in the form of particles or fine particles obtained by forming ion exchange groups on a substrate by graft polymerization or chemical addition.
The base material may be an adsorbent substance that can form ion exchange groups by graft polymerization or chemical addition. For example, an inorganic porous material such as activated carbon, silica gel, or zeolite, or an organic porous material such as pulp or polymer porous material. Sexual body is adopted.

  Examples of the ion exchange group include an anion exchange group that chemically adsorbs an organic acid such as acetic acid gas or an acidic gas. The anion exchange group may be an alkali metal such as a strongly basic quaternary ammonium group, a weakly basic quaternary ammonium group, a weakly basic tertiary amine, a secondary amine, caustic soda, sodium carbonate, or potassium hydroxide. Alkaline earth metals are used.

  As a method for graft polymerization of these exchange groups onto a substrate, a conventionally known graft polymerization method can be employed. For example, a radical is generated on the substrate by irradiation with ultraviolet rays, plasma, ionizing radiation, etc., and a predetermined exchange group is formed. It can be formed by polymerization.

  As a method for chemical attachment of these exchange groups to the base material, it is possible to form the base material by impregnating the base material with an aqueous solution of an oxide, hydroxide, carbonate or the like of an alkali metal or alkaline earth metal. it can.

  Further, the adsorption panel is attached to a panel case composed of a substantially rectangular casing formed with a detachable cover plate at the upper end and a side plate at the other end, and a perforated plate attached to the entire front opening and rear opening of the casing. It is configured by filling a material.

  And the replacement | exchange of the adsorbent to an adsorption | suction panel is performed by removing the removable cover board of the upper end of a frame, and taking in / out an adsorbent from upper direction.

  In addition, the pre-filter on the upstream side of the suction panel is attached to the filter holding frame via an adhesive or a locking claw.

  And the prefilter is a single filter medium sheet or this filter medium formed by wet papermaking, dry, spunbond, melt blown, etc., synthetic fibers such as glass fiber, nonwoven fabric, polyester fiber, polyamide fiber, polyolefin fiber, rayon fiber, etc. A filter medium sheet in which an antibacterial / bactericidal agent such as silver zeolite is attached to a sheet is attached to a filter frame.

  Further, the prefilter desirably has an average dust collection efficiency of 20 to 80% by a colorimetric method.

  Next, the medium-high performance filter has a fiber diameter of 6 μm or less (center fiber diameter: around 3.5 μm) and is composed of 93% by weight or more of glass fiber, nonwoven fabric, polyester fiber, polyamide fiber, polyolefin fiber, rayon fiber, etc. A single filter medium sheet formed by wet papermaking, dry process, spunbond process, melt blow process, etc., either alone or appropriately mixed, or a filter medium sheet with antibacterial and bactericidal agents such as silver zeolite attached to this filter medium sheet The filter medium is folded in a zigzag shape, and a separator made of a suitable material is sandwiched between the filter mediums. It is attached to form a cell type with airtightness.

  The filter medium sheet of the medium / high performance filter has a sheet thickness of 0.2 to 2.0 mm and a collection efficiency of 80 to 99.95% with respect to particles having a particle diameter of 0.3 μm.

  Even if the efficiency and numbers are variously changed depending on the filter arrangement of each stage, the gist is not changed.

  The effect | action by the said problem-solving means is as follows. First, the air in the storage room containing organic acid and acid gas such as acetic acid gas generated from the microfilm by the intake operation of the blower built in the main body is taken into the main body from the air suction port formed in the main body. Next, relatively large dust such as dust and dust is removed from the air taken into the main body by a prefilter. And it is possible to reduce dust load such as dust and dust on the suction panel in the subsequent stage.

  Next, the air from which relatively large dust has been removed passes through the adsorption panel. At this time, an organic acid such as acetic acid gas or an acidic gas is adsorbed and removed by a chemical reaction with an ion exchange group on the adsorbent by the adsorbent filled in the adsorption panel.

  In addition, air from which relatively large dust and adsorbing panels have passed and organic acids such as acetic acid gas and acid gas have been removed passes through a medium to high performance filter having high collection efficiency. At that time, fine particle size dust contained in the air is removed and discharged as clean air into the storage chamber through an air outlet formed in the main body.

  By continuing the above operation, the entire room air containing organic acid such as acetic acid gas and acid gas generated from the microfilm is gradually purified, and finally the room is filled with clean air.

The invention's effect

As described above, the organic acid and acid gas removing device of the present invention can provide the following effects.
(1) The organic acid and acid gas removal device is composed of a pre-filter built in a box-shaped body, an adsorption panel, a blower, and a medium to high performance filter. The structure is very simple and easy to handle. In addition, the installation space can be reduced and the local installation can be simplified.
(2) Since the adsorption panel is filled with an adsorbent having a function of removing organic acid and acid gas, the organic acid is removed from the air passing through the adsorption panel.
(3) Furthermore, air from which organic acids and acid gases have been removed is discharged into the room from the air outlet after fine particle size dust has been removed by the medium to high performance filter, so that purified air is supplied to the room. The By repeating these operations, the air in the storage room is surely cleaned, and the health of personnel in the room and the deterioration of the stored microfilm can be suppressed.
(4) Since a pre-filter is installed in front of the suction panel, the concentration of dust flowing into the suction panel can be greatly reduced, the increase in pressure loss of the suction panel can be suppressed, and the life can be extended. Total cost including running Can be saved.
(5) Since clean air is blown away, indoor air is diffused to eliminate gas stagnation and to remove dust, pollen, and harmful gases that prevent short paths.
(6) Since it has dust, pollen, toxic gas and humidity control function, it is possible to control the humidity, which is important for storage of valuable documents and artworks.
(7) It has antibacterial action and antibacterial and sterilizing effects such as adherent bacteria and mold, so it can prevent the fouling of precious documents and artworks, as well as removal, sterilization and deodorization of gas, dust, mold and other microorganisms. Degassing effect is possible.
(8) It is possible to replace the prefilter and medium / high performance filter or adsorbent.
(9) Since the caster is attached to the bottom of the box-shaped main body, the caster can be freely moved to a place where it is desired to be installed in the storage room.

The front view of Example 1 of this invention is shown. The top view of FIG. 1 is shown. The left view of FIG. 1 which shows the inside of 1 part. The right view of FIG. 1 is shown. The front view of this invention Example 2 which shows 1 part inside. The top view of FIG. 5 is shown. The left view of FIG. 5 which shows the inside of 1 part. The right view of FIG. 5 is shown. The front view of this invention Example 2 which shows 1 part inside. The top view of FIG. 5 is shown. The left view of FIG. 5 which shows the inside of 1 part. The right view of FIG. 5 is shown.

  Hereinafter, the organic acid and acid gas removing device of the present invention will be described in detail with reference to the drawings.

  An organic acid and acid gas removal device when installed in a narrow microfilm storage chamber will be described with reference to FIGS. Reference numeral 1 denotes a box-shaped main body. The main body 1 is composed of side plates 2 and 3, a front door 4 hinged to one side plate 2, a bottom plate 6 to which casters 5 are attached, an upper plate 7 and a back plate 8. ing. An air suction port 9 is formed in front of the front door 4.

  Moreover, the adsorption | suction panel 10 is attached to the inside of the main body 1 so that it may attach to a flat plate shape airtightly.

A pre-filter 11 is attached to the frame on the upstream side of the suction panel 10 in the airflow direction, and a medium / high performance filter 12 is attached to the frame on the downstream side in the airflow direction. A blower 13 is installed downstream of the medium / high performance filter 12. Further, an air outlet 15 provided with a variable louver 14 is formed in the upper plate 7.
Reference numeral 16 denotes an operation hour meter monitor which serves as a replacement index for the prefilter and the medium / high performance filter or adsorbent.

  Since the structure of Example 1 is such a simple structure, the air in the storage chamber containing organic acid and acid gas such as acetic acid gas generated from the microfilm by the intake operation of the blower 13 in the main body 1 is stored in the main body. The air is taken into the main body 1 through the formed air suction port 9. Then, relatively large dust such as dust and dust is removed from the air taken into the main body 1 by the prefilter 11 and passes through the adsorption panel. The adsorption panel 10 removes organic acid such as acetic acid gas and acidic gas.

  Further, the air having passed through the adsorption panel 10 is discharged into the storage chamber through an air outlet 14 formed on the upper plate 7 as fine air particle dust is removed by the medium / high performance filter 12 and clean air.

  By continuing the above operation, the entire room air containing organic acid such as acetic acid gas and acid gas generated from the microfilm is gradually purified, and finally the room is filled with clean air.

  An organic acid and acid gas removal apparatus when installed in a relatively wide microfilm storage chamber will be described with reference to FIGS. Reference numeral 21 denotes a box-shaped main body, and the main body 21 includes side plates 22 and 23, a front door 24 hinged to one side plate 22, a bottom plate 26 to which casters 25 are attached, an upper plate 27 and a back plate 28. ing. Air suction ports 29 are formed in the bottoms of the side plates 22 and 23 and the front door 24, respectively. Further, an air outlet 31 provided with a variable louver 30 is formed in the upper part of the front door 24.

  Further, the suction panel 32 is attached to the frame in an airtight zigzag manner inside the main body 21.

  A pre-filter 33 is attached to the frame on the upstream side of the suction panel 32 in the airflow direction, and a medium / high performance filter 34 is attached to the frame on the downstream side in the airflow direction. A blower 35 is installed in front of the medium / high performance filter 34. Reference numeral 36 denotes an operation hour meter monitor that serves as a guideline for replacing the prefilter and the medium / high performance filter or the adsorbent.

  Since the structure of the second embodiment is such a simple structure, the air in the storage chamber containing an organic acid or an acid gas such as acetic acid gas generated from the microfilm by the intake operation of the blower 35 in the main body 21 is stored in the main body 21. The air is taken into the main body 21 through the air suction port 29 formed in FIG. Then, relatively large dust such as dust and dust is removed from the air taken into the main body 21 by the prefilter 33 and passes through the adsorption panel 32. The adsorption panel 32 removes organic acid such as acetic acid gas and acidic gas.

  Further, the air having passed through the adsorption panel 32 is discharged from the air outlet 31 formed in the upper part of the front door 24 as clean air from which fine particle size dust is removed by the medium / high performance filter 34.

  By continuing the above operation, the entire room air containing organic acid such as acetic acid gas and acid gas generated from the microfilm is gradually purified, and finally the room is filled with clean air.

  The organic acid and acid gas removal device when installed in a wide microfilm storage chamber is shown in FIGS. 9 to 12 but has substantially the same structure and operational effects as the second embodiment, so the same as the second embodiment in the drawing. Numbers are given and detailed description is omitted.

In this embodiment, one embodiment of the present invention has been described. The present invention is not limited to this embodiment, and the gist of the present invention is not changed at all by various modifications. In addition, it is possible to remove chemical substances such as formaldehyde, toluene, SOX, NOX, etc. for residents in houses, buildings, buildings, medical facilities, etc., and even if it is used as an air purifier for sick house countermeasures, the gist of the present invention is changed. Not what you want.
It can also be used by replacing the adsorbent formed with cation exchange groups such as sulfonic acid group, carboxyl group and phosphoric acid group by graft polymerization or chemical attachment with an adsorbent having the function of removing organic acid. Is.

  In the microfilm storage room, an organic acid and acid gas removal device is placed in the storage room to protect and maintain the microfilm, and the room air containing organic acid and acid gas such as acetic acid gas generated from the microfilm is stored. The air is purified and returned to the room as clean air, and this is repeated to replace the room air with clean air.

DESCRIPTION OF SYMBOLS 1 ... Main body 2 ... Side plate 3 ... Side plate 4 ... Front door 5 ... Caster 6 ... Bottom plate 7 ... Top plate 8 ... Back plate 9 ... Air Suction port 10 ... Adsorption panel 11 ... Pre-filter 12 ... Medium-high performance filter 13 ... Blower 14 ... Variable louver 15 ... Air outlet 16 ... Operating hour meter monitor 21 ... Main body 22 ... Side plate 23 ... Side plate 24 ... Front door 25 ... Caster 26 ... Bottom plate 27 ... Top plate 28 ... Back plate 28
29 ... Air inlet 30 ... Variable louver 31 ... Air outlet 32 ... Suction panel 33 ... Pre-filter 34 ... Medium high performance filter 35 ... Blower 36 ... Hours meter monitor

Claims (9)

  An organic acid or acid gas removing apparatus comprising a pre-filter, an adsorption panel, a blower, and a medium / high performance filter incorporated in a box-shaped main body having an air inlet and an air outlet.   2. The organic acid and acid gas removing device according to claim 1, wherein a pre-filter is provided on the upstream side in the air flow direction of the adsorption panel, and a medium / high performance filter and a blower are provided on the downstream side in the air flow direction.   2. The organic acid and acid gas removing device according to claim 1, wherein the adsorption panel is filled with an adsorbent having a function of removing organic acid such as acetic acid gas.   2. The organic acid or acid gas removing device according to claim 1, wherein the adsorption panel is attached to a frame provided in the main body in a flat plate shape or a zigzag shape.   2. The organic acid or acid gas removing device according to claim 1, wherein a variable louver is provided at the outlet.   2. The organic acid or acid gas removing device according to claim 1, wherein the adsorbent is in the form of particles or fine particles obtained by forming ion exchange groups on the base material by graft polymerization or chemical addition.   2. The organic acid or acid gas removing device according to claim 1, wherein the adsorbent base material is a porous base material such as activated carbon or zeolite material.   2. The organic acid or acid gas removing device according to claim 1, wherein an antibacterial / bactericidal agent such as silver zeolite is attached to the prefilter and the medium / high performance filter.   2. The organic acid or acid gas removing device according to claim 1, wherein an operating hour meter monitor serving as an index for replacement is provided on the prefilter and the medium-high performance filter or the adsorbent.

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