JPS5820222A - Drying method and holder of bag enclosing drying agent - Google Patents

Abstract

PURPOSE:To sufficiently develop excellent hydroscopic property possessed by deliquescent salts while outflow of a deliquescent liquid is prevented, by vertically holding a container enclosing a drying agent based on deliquescent salts. CONSTITUTION:A bag 2 made of a sheet like substance having moisture permeability enclosing a drying agent 1 directly comprising deliquescent salts such as CaCl2 or obtained by carrying said salts by a carrier such as perlite is received in a holder 3 having an opening part 4 provided to the wall part of the main body thereof and a liquid-tight trough like structure 5, of which both ends are closed, provided to the bottom part thereof. This holder 3 hung by a hanging jig 6 and arranged so as to hold the opening part 4 thereof vertically in a space to be dried. The holder is not limited to a hanging type and a placing type may be used. In addition, the drying agent may be received in a box made of a sheet like substance having a liquid-tight bottom part. As referred above, when the main moisture permeable surface of a bag or a box is held vertically, extremely excellent moisture removing effect is obtained compared to a horizontally placed moisture permeable surface.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a drying method using deliquescent salts and a holding device for a bag containing a desiccant.

A desiccant suitable for dehumidifying indoor spaces (e.g. closets, chests of drawers, shoe cabinets, cupboards) and other relatively mu-spaces with inadequate netting conditions in regions with humid climates such as Japan. It is hoped that it will appear. Conventional desiccants, such as silica gel, activated alkaline, and zeolite, have a small moisture absorption capacity, and under high temperature and humidity conditions, the substantial decrease in IIWl is limited, even if only slightly, unless there is a complete netting space. , Nakatsumaru is out of business.

Deliquescent salts are relatively inexpensive, have strong hygroscopicity, and absorb a large amount of moisture per unit weight (thus, are suitable for drying and dehumidifying relatively large spaces), and are suitable for drying and dehumidifying the above-mentioned drying agents. It has excellent hygroscopicity compared to 94, but it has the disadvantage that it flows out as a concentrated aqueous solution because it has deliquescent properties, and other companies are rarely used, although it is used in a small amount in the form shown below. .

In other words, in order to prevent the deliquescent liquid from flowing out, it is necessary to use a can that is highly stable (does not easily tip over) and has a capacity that prevents the deliquescent liquid from flowing out even if the deliquescent liquid is turned over, for example, a short horizontally long can.
It is only used in small quantities in the form of a bottle with a narrow mouth containing deliquescent salts. However, in this form, the contact efficiency between the air (gas) to be dried and the deliquescent salts is low, so the excellent moisture absorption performance of the deliquescent salts is not effectively utilized.

The present inventors conducted intensive research to find a desiccant and drying method that uses deliquescent salts that have excellent moisture absorption properties and overcomes the drawbacks caused by their deliquescent properties, and as a result, they completed Suekan gA. did.

In the present invention, a desiccant mainly composed of deliquescent salts is stored in a container made of a sheet-like material having moisture permeability, and a bag or box containing the desiccant is placed in a bag or box to be dried. This drying method is characterized by holding the desiccant bags vertically in the middle of the drying process. This device has an opening and a gutter-like structure with both ends closed at the bottom to prevent liquid from leaking.

As the desiccant mainly composed of deliquescent salt M used in the present invention, one or more deliquescent salts such as calcium chloride, magnesium chloride, and lithium chloride may be used as they are, or these deliquescent salts Salts supported on an inorganic carrier and/or an organic carrier are used. Among the deliquescent salts, calcium chloride is preferable because of its economical properties and ease of availability.As a carrier, expanded perculite and/or matrixite are preferred due to their performance as carriers (surface area, hardness, etc.). , stability, corrosion resistance, etc.).

Bags or boxes made of moisture-permeable sheet materials used in this book include paper, cloth, nonwoven fabric, microporous film, etc., and also materials made of moisture-permeable and liquid-impermeable synthetic polymers. Sheets (e.g. microporous produced by suction or elution processes), ilms. An example of the former is "Tyvek" manufactured by Dehyoin Co., Ltd., and an example of the latter is NPR sheet manufactured by Tokuyamaso Co., Ltd. ) are used. This bag or box is completely transparent.
It is not necessary that the bag or box is made of a sheet-like material that has moisture permeability, but if the bag or box is installed vertically6, and the part of the bag or box that is near the own vehicle is made of a sheet-like material that has moisture permeability. good.

In the present invention, the desiccant-impregnated bag or box as described above is placed so that the main part of the surface made of the moisture-permeable sheet or sheet material is held vertically in the space to be dried. Final perfect f
In 14, "held vertically" does not mean to be held vertically, but also to be held at an angle that does not significantly exceed 90 degrees beyond 45 degrees from the horizontal plane with the main moisture permeable surface of the fold or fold box. means.

In the present invention, when a desiccant mainly composed of deliquescent salt is housed in a moisture-permeable sheet-like bag, the bag can be kept upright during use. It is preferable to use a device, and it is particularly preferred that the device has an opening in the body wall and a trough-like structure with closed ends at the bottom and no liquid peaks.

Furthermore, when the desiccant is housed in a box made of a sheet-like material, it is desirable to have a structure in which the Ti liquid does not leak from the bottom of the box.

The present invention will be explained in detail below with reference to the drawings.

Figure 1 shows a sheet paper (2) containing a desiccant (1) containing Sakai dampness contained in a holding device (3), and a hanging device (6).
FIG. 7 is a diagram showing how the desiccant-containing tray is held vertically by hanging it upright. FIG. 2 is a cross-sectional view taken along the Mumm' line in FIG. 1. The holding device (3) has an opening (4) in the main body 11 and a trough-like structure (5) with closed ends at the bottom. In addition, as shown in enlarged drawing 3 (0) of the holding device (3) is a front view and a cross-sectional view taken along the line ``mm'', there is a desiccant bag (2).
It may be a turtle that accommodates 211 vertically. moreover,
Not only can it be hung from a hanging rod, but it can also be placed as shown in Figure 4.
In addition, different designs of the holding device for the sling are shown in FIGS. 6 to 13 above. (Figure 6.7 is a bag-shaped holding device, and Figures 8 to 13 are box-shaped or basket-shaped holding devices.) The above shows holding devices in which desiccant is stored in a bag. If a moisture-permeable sheet is attached to the inside of the holding device shown in Figs. 6 to 13, these sheets can be used as a moisture-permeable bag or box. In these cases, the main vapor permeable surface of the bag or box is held approximately vertical. Note that when the bag is housed in a box, no holding device is required as shown in FIGS. 14 and 15. In Figures 14 and 15, 5 (7) is also provided with a portion (8) made of a sheet-like material having moisture permeability (hereinafter referred to as the moisture permeable surface), and the moisture permeable surface is kept almost perpendicular to the image. In particular, the effects of the present invention as described below can be obtained. In other words, even if you use the same desiccant container, the moisture-permeable surface will remain vertical.

When this is done, much better moisture absorption performance is achieved compared to when the moisture permeable surface is placed horizontally.

This is because the moisture in the air is absorbed by the desiccant and decreases, and the flow of air that comes into contact with the outside of the moisture permeable surface is caused by the fact that the moisture permeable surface is vertical (f!! almost straight). This is thought to be due to the fact that in some cases this occurs more smoothly than in the horizontal case, and the accompanying movement of moisture [O] in the space to the area in contact with the moisture permeable surface becomes faster. Incidentally, the rate of moisture absorption is proportional to the difference between the equilibrium humidity of the desiccant and the relative humidity of the surrounding air.

Examples and comparative examples of the present invention will be shown below to further explain the present invention in different ways.

Examples 1 to 2 and Comparative Example 1 50 qk aqueous solution of calcium chloride 50 t f: 25
After impregnating the vermiculite of F, it was fired at 150° C. for 3 hours and weighed 58 tons, which was filled into a 20 m x 10 oz moisture-permeable paper bag to make one desiccant. Example 1 is a tortoise in which 02 of these were set in a breathable hanging container as shown in Figure 3, and Example 2 is a round turtle set in a breathable hanging container as shown in Figure 4. As a comparative example, the samples were arranged side by side in a large ventilated container as shown in Fig. 5, and each was set in a 100m x 100α x 100c*0 box O placed in a room with a constant temperature of 5°C and 80°C. However, in this situation, the ventilation rate of the container box is 1j3
001G/day, and the AM needle is Shibaura Seisakusho 8R310 type. At this time, each l1IIO relative humidity [shown in the first table].

As seen in the table, the method of holding the desiccant container vertically according to the present invention exhibits a much better heat removal effect than the method of placing it horizontally as mentioned in the comparative example.

[Brief explanation of the drawing]

1 to 4 and 14 to 15 are diagrams showing the drying method of the present invention, and FIG. 5 is a diagram showing a comparative example. In each figure, (1) desiccant, (2) moisture-permeable sheet bag, (3) desiccant bag holding device, (4) opening, (5
) A gutter-like structure with both ends closed to prevent liquid leakage; (6) a hanging device; (7) a moisture-permeable sheet box; and (8) a moisture-permeable surface of the bag or box. Figures 6 to 13 are diagrams showing a holder for a hanging desiccant bag. Patent applicant: Nippon Sokako Co., Ltd. Agent (6286) Haruyuki Ito (7125) Yoshimi Yokoyama Figure 6 Figure 7 Figure 8 Figure 9 Figure 1O Figure 1I Figure 12 Figure 13 Figure 14

Claims (1)

[Scope of Claims] 1. A desiccant mainly composed of deliquescent salts is housed in a bag or box made of a moisture-permeable sheet-like material, and the bag or box containing the desiccant is placed in a space to be dried. A drying method characterized by holding at a temperature. 2. The drying method according to claim 1, wherein the desiccant is a mixture of deliquescent salts supported on an inorganic carrier and/or an organic carrier. 3. The drying method according to claim 2, wherein the inorganic carrier is expanded perky kerite and/or tsukurite. 4. The drying method according to any one of claims 1 to 3, wherein the deliquescent salt is calcium chloride. 5. A main body for holding a desiccant-containing bag vertically and installing it in a space to be dried, which is made by accommodating a desiccant mainly composed of deliquescent salts in a moisture-permeable sheet-like material bag. 1ll with an opening at the bottom and both ends closed at the bottom
-%Shinona i Apparatus having a gutter-like structure.