JPS60238119A - Air dehumidification apparatus - Google Patents

Abstract

PURPOSE:To attain to miniaturize the titled apparatus and to reduce the cost thereof while holding sufficient dehumidification capacity, by supplying a part of air, which is dehumidified air from one chamber and of which the pressure is reduced to atmospheric pressure, to the other chamber. CONSTITUTION:The titled apparatus is provided with a pressurizing apparatus 1 for pressurizing air to enhance the steam partial pressure thereof, an apparatus 2 for cooling pressurized air, a steam pervious apparatus 3, wherein pressurized cooling air from the cooling apparatus 2 is supplied to one of two chambers partitioned by a steam permselective high-molecular membrane 3a to transfer steam in pressurized cooling air to the other chamber through the high-molecular membrane 3a by steam partial pressure difference between both chambers and pressurized cooling air is dehumidified, and a humidification apparatus for regulating the humidity of air by humidifying dehumidified air.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention is an apparatus used to generate dehumidified air for air conditioning, industrial furnaces, and low-temperature drying of sewage sludge, etc. Specifically, it includes a device that pressurizes the air to be dehumidified to increase the partial pressure of water vapor in the air, and a device that applies pressure from the pressurization device to one of two chambers partitioned by a polymer membrane that is selectively permeable to water vapor. By supplying pressurized air, the water vapor in the pressurized air is transferred to the other chamber through the polymer membrane using the water vapor partial pressure difference between the compartments, and a water vapor permeation device is installed to dehumidify the pressurized air. The present invention relates to a dehumidifying device.

[Prior Art] As a conventional air dehumidifying device, there can be mentioned Toku@t@58-1931003, which was previously proposed by the same applicant. By supplying pressurized air to be dehumidified to one chamber of the water vapor permeation device and supplying normal pressure air to the other chamber, water vapor in the air to be dehumidified can be removed by using a water vapor partial pressure difference between the compartments. The gist is to move the air to the other chamber and dehumidify the air to be dehumidified.

[Problem that the invention seeks to solve]

However, the conventional apparatus described above has the following problems.

In other words, the rate of water vapor permeation through the polymer membrane Q (cc/5
ec) is the water vapor permeability coefficient P(cc-body unit・sec
-amig), and the water vapor partial pressure in one chamber is P((aml
The water vapor partial pressure in the other chamber is Fuming), and the surface area of the polymer membrane is A (-), and the thickness of the polymer membrane is Z(-)!.As is clear from this, the air In order to achieve high dehumidification, it is necessary to increase the difference in water vapor partial pressure (P, Pt) between the compartments.On the other hand, when normal pressure air is supplied to the other compartment as in conventional equipment, water vapor When increasing the partial pressure difference, it is necessary to increase the water vapor partial pressure of the air to be dehumidified that is supplied to one chamber. Therefore, when using conventional equipment, when dehumidifying the air to a high degree, the partial pressure of water vapor in the air to be dehumidified must be increased. In order to achieve this, it is necessary to highly pressurize the air to be dehumidified, which leads to an increase in the size of the pressurizing device and an accompanying increase in initial and running costs.

The present invention has an object to solve such conventional problems.

[Means to solve the problem]

A characteristic configuration of the air dehumidifier according to the present invention is that a supply path is provided for supplying part of the dehumidified air from the one chamber and the air reduced to normal pressure to the other chamber. The effects of this are as follows.

[For production]

In other words, dehumidified air from one chamber, which has been depressurized to normal pressure and has a very low partial pressure of water vapor, is supplied to the other chamber. Since the air is dehumidified, the pressure applied to the air to be dehumidified supplied to one chamber is reduced, while the water vapor partial pressure difference between the compartments is increased to sufficiently reduce the water vapor partial pressure of the air to be dehumidified. I can do it.

〔Effect of the invention〕

Therefore, according to the present invention, while the air to be dehumidified can be sufficiently dehumidified, the pressurizing device can be made smaller and the cost and running costs can be reduced.

〔Example〕

As shown in Figure 4M1, a device that generates air with controlled humidity is constructed by pressurizing air (al) and
A pressurizing device for increasing the partial pressure of cool steam in Ill) and a device Ill for cooling the pressurized air (lρ) are separated by a polymer membrane (3a) that is selectively permeable to water vapor. 7'
By supplying pressurized cooling air (aρ) from the cooling device (2) to one (3A) of the seven chambers (3A) and (3B), the water vapor partial pressure difference in the darkness between compartments (3A) and (3B) is reduced. the water vapor in the pressurized cooling air (a) to the other chamber (3).
A water vapor permeation device (3) that dehumidifies pressurized cooling air (-) by transferring it to B) through a polymer membrane (3a), and a pressure reducing valve (4) that depressurizes the dehumidified air (a4) to normal pressure. ,
A humidifier flsl is provided for humidifying reduced pressure air (AS) to adjust the humidity of the air.

A supply path (
6) is provided so that the water vapor partial pressure between the two chambers (3A) and (3B) is larger than that in the case where normal pressure air is supplied to the other chamber (3B).

The water vapor permeation device (3) is configured to flow pressurized cooling air (-) and decompressed air (!III) along the polymer membrane (3a) K in a countercurrent state.

[Another example]

As shown in FIG. 8, the water vapor permeation device (3) is installed in a manner that dehumidifies pressurized air from a pressurization device,
The said cooling device (2) is reduced by using the pressure reducing valve (4). Relationship Patent Applicant Episode 4 Osaka (061374-1221) Name (80
97) Patent attorney Osamu Kitamura 5, Attachment 11, Attachment 7 of the amendment order, Contents of the amendment The scope of the patent claims will be corrected as shown in the attached sheet.

& Nine documents stating the scope of patent claims after the correction of the list of attached documents 1 agent Patent attorney Osamu Kitamura Scope of patent claims ■ Device 1111 that pressurizes the air to be removed for eye removal and increases the partial pressure of water vapor in the air and tightly spaced chambers (8A) and (8B) partitioned by a polymer membrane (8a) that is selectively permeable to water vapor.
By supplying pressurized air from the pressurized bag @ ill to one side (3A) of the compartments (8A) and (8B), water vapor in the pressurized air is transferred to the polymer membrane (
as) a water vapor permeation device (3) for dehumidifying the pressurized air by moving the pressurized air through the other chamber (8B)K, the air dehumidifying device comprising: Supply W of dehumidified air and part of the air reduced to normal pressure to the other chamber (8B)! 1161K air dehumidifier.

(2) The air dehumidification device according to claim 0, wherein the water vapor permeation device (3) causes pressurized air and decompressed air to flow along the polymer membrane (8a) in a countercurrent state. .

(2) The pressurized air supplied to one chamber (8A) of the water vapor permeation device (3) is air that has been cooled after being pressurized by the pressurizing device (2). term ti
t. The air dehumidification device described in item (2).

Claims (1)

[Claims] ■ A device (11) that pressurizes the air to be dehumidified to increase the partial pressure of water vapor in the air, and two chambers separated by a polymer membrane (3 halves) that can selectively permeate water vapor. By supplying pressurized air from one of the chambers (3A) and (3B) (3A) and 4C, the water vapor partial pressure difference between both chambers (3A) and (3B) is used to increase the pressure in the pressurized air. Water vapor is transferred to a polymer membrane (3a)
An air dehumidifier is provided with a water vapor permeable bag fl (81) for dehumidifying pressurized air by transferring the pressurized air to the other chamber (3B) K through the dehumidified air from the one chamber (3A), and an air dehumidifier provided with a supply path (6) for supplying a part of the air reduced to normal pressure to the other chamber (3B). ■ The water vapor permeation device (3) supplies pressurized air The air dehumidification device according to claim 0, which causes the and decompressed air to flow in a countercurrent state along the polymer membrane (3a). ■ One chamber of the water vapor permeation device (3). After the pressurized air supplied to (3A) is pressurized by the pressurizing device ill,
The air dehumidification device according to claim 0 or 0, which is cooled air.