JP2009039611A - Compression air dehumidifier having gas separation membrane module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compression air dehumidifier having a manifold capable of connection of two or more gas separation membrane module in parallel and/or in series and being capable of controlling together purge gases flowing in these gas separation modules and supplying high-pressure dry air masses of different dew points. <P>SOLUTION: The compression air dehumidifier comprises gas separation membrane modules 2 which have a cylinder of a gas separation membrane connected to an inlet for incoming high-pressure wet air and an outlet for outgoing high-pressure dry air and a space for introduction and discharge of a part of the high-pressure dry air serving as purge gas between the cylinder and the cover of the cylinder, and the high-pressure wet air passes through the cylinder with its moisture discharged into the space between the cylinder and the cover of the cylinder. The dehumidifier has a manifold 1 capable of connecting the inlets of the gas separation membrane modules 2 for incoming high-pressure wet air with the outlets for outgoing high-pressure air, and passages 11a and 11b connecting the inlet of each gas separation membrane module 2 for introduction of the purge gas with the outlet 26 for discharge of the space purge gas are arranged in the manifold 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a compressed air dehumidifier having a manifold to which a plurality of gas separation membrane modules can be connected.

  Gas separation membranes that have the same or better dehumidifying performance as refrigeration type compressed air dehumidifiers in factories and other sites, are easy to reduce in size and weight, require no power supply, and are low in cost. A compressed air dehumidifier is widely used.

  In Patent Document 1, a flow region of purge gas is secured on the side of the hollow fiber membrane at a position opposite to the exhaust port at the gas introduction side position, and the hollow fiber membrane is bundled in a bundle. A dehumidifier using a hollow fiber membrane that supports and attaches a buffer ring that shields a portion facing the exhaust port is shown. As shown in FIG. 1 of this document, the purge gas is used after returning the dry gas dehumidified in the apparatus.

  As shown in FIG. 13, when dehumidifying a large amount of compressed air, the compressed air dehumidifier is used with a plurality of gas separation membrane modules 2 connected to a manifold 55.

  However, such a compressed air dehumidifier is troublesome because the direction of the inlet and outlet of the compressed air is limited and the purge gas is controlled by the orifice 56 for each membrane module 2. Moreover, since the membrane modules 2 are connected in parallel, even if a large amount of compressed air can be dehumidified, the dehumidifying efficiency of the compressed air cannot be increased. Also, it is impossible to supply dry air having different dew points according to the application.

  Patent Document 2 discloses a purge gas distribution device in which a plurality of gas separation membrane modules are connected in parallel to a manifold unit, and a purge gas is collectively adjusted by a flow rate adjusting means while monitoring a pressure gauge provided in the manifold unit. ing.

  However, even if a plurality of gas separation membrane modules can be connected in parallel, this gas distribution device cannot be connected in series, and cannot supply compressed air having a different dew point. In addition, this apparatus becomes large because the gas separation membrane module is a straight pipe type.

Japanese Unexamined Patent Publication No. 7-8739 JP 2002-320816 A

  The present invention has been made to solve the above-described problems, and includes a manifold capable of connecting a plurality of gas separation membrane modules in parallel and / or in series, and purge gas flowing through these gas separation membrane modules is collectively collected. An object of the present invention is to provide a compressed air dehumidifier that can be controlled and can supply high-pressure dry air having different dew points.

  A compressed air dehumidifier according to claim 1, which has been made to achieve the above object, comprises a cylinder of a gas separation membrane connected to a high-pressure wet air inlet and a high-pressure dry air outlet, and A gas separation membrane module having a space in which a part of the high-pressure dry air is introduced and discharged as a purge gas between the cylinder and the cover of the cylinder is provided, and the high-pressure wet air is discharged into the space through the cylinder. A compressed air dehumidifier having a manifold capable of connecting a high-pressure wet air inlet and a high-pressure dry air outlet of a plurality of gas separation membrane modules, and introducing a purge gas into the space of each gas separation membrane module A flow path that connects the mouth and the outlet to each other is formed.

  The compressed air dehumidifier described in claim 2 is the one described in claim 1, wherein the cylinder and the cover of the gas separation membrane module are U-shaped, and the high-pressure humid air inlet is provided. The high-pressure dry air outlet is connected to the manifold in the same direction.

  The compressed air dehumidifier described in claim 3 is the one described in claim 1, wherein each of the high pressure humid air inlets and each of the high pressure dry air flows of a plurality of gas separation membrane modules connected to the manifold is provided. It is characterized in that it can be connected to a high-pressure humid air inflow source and a high-pressure dry air outflow destination independently of the outlet.

  The compressed air dehumidifier described in claim 4 is the one described in claim 1, wherein each of the high pressure wet air inlets and each of the high pressure dry air flows of a plurality of gas separation membrane modules connected to the manifold is provided. The manifold is formed with a flow path that is connected in order with the outlet.

  The compressed air dehumidifier described in claim 5 is the one described in claim 1, wherein the high pressure humid air inlets of the plurality of gas separation membrane modules connected to the manifold are connected to each other. The manifold is formed with a flow path connecting the high-pressure dry air outlets.

  The compressed air dehumidifier described in claim 6 is the one described in claim 1, wherein all the high-pressure humid air inlets and all the high-pressure drying units of the plurality of gas separation membrane modules connected to the manifold are provided. A flow path for connecting the air outlet is formed in the manifold, and a flow path closing means is provided in each of the connection flow paths.

  The compressed air dehumidifier described in claim 7 is described in claim 1, and is connected to the manifold at some of the connection ports of the manifold capable of connecting the plurality of modules described above. It is characterized by being.

  The compressed air dehumidifier described in claim 8 is the compressed air dehumidifier described in claim 1, wherein the manifold is substantially a polyhedron, and at least two gas separation membrane modules can be connected substantially vertically to the polyhedron. It is characterized by being.

  The compressed air dehumidifier of the present invention can connect a plurality of gas separation membrane modules in parallel or / and in series. Therefore, in the case of parallel connection, a larger amount of compressed air can be dehumidified and supplied, and in the case of series connection, compressed air with lower humidity can be supplied.

  Further, the compressed air dehumidifier of the present invention can be further downsized because the gas separation membrane modules connected in parallel and / or in series are U-shaped.

  Moreover, since the compressed air dehumidifier of this invention is provided with the some high pressure dry air outflow destination, it can supply the compressed air from which a dew point differs according to a use.

  Moreover, since the compressed air dehumidifier of this invention is provided with the some high pressure humid air inflow source, it can dehumidify and supply different compressed air separately according to a use.

  Moreover, since the compressed air dehumidifier of the present invention can collectively control the purge gas, the compressed air can be easily dehumidified.

Preferred form for carrying out the invention

  Examples of the present invention will be described in detail below, but the scope of the present invention is not limited to these examples.

  A perspective view of one embodiment of a compressed air dehumidifier to which the present invention is applied is shown in FIG. FIG. 2 is a cross-sectional view of a gas separation membrane module constituting the compressed air dehumidifier. FIG. 1 is a perspective view showing the connection between the gas separation membrane module and the manifold. FIG. 4 is a schematic view showing this compressed air dehumidifier.

  As shown in FIG. 3, the compressed air dehumidifier is mainly configured by connecting U-shaped gas separation membrane modules 2 a and 2 b to a manifold 1. The manifold 1 is connected to a compressed air introduction pipe 34 connected to an air compressor and a compressed air supply pipe 35 connected to an air tool. In addition, the manifold 1 has the connecting port 5 covered with a cover 38 (see FIG. 1). The gas separation membrane modules 2 a and 2 b, the compressed air introduction pipe 34, the compressed air supply pipe 35 and the cover 38 are securely fixed to the manifold 1 with screws 15.

  As shown in FIG. 1, the manifold 1 has a cubic shape. Compressed air flow paths 7a, 7b, 7c and 7d are provided on the four sides of the manifold 1. Each compressed air flow path 7 is provided with and communicates with four connection ports 5 on the surface in the vicinity. The compressed air flow paths 7 b and 7 c are communicated with each other by a compressed air connection flow path 10.

  Further, purge gas flow paths 11a and 11b are provided between the compressed air flow path 7a and the compressed air flow path 7b, and between the compressed air flow path 7c and the compressed air flow path 7d, respectively. The purge gas flow paths 11a and 11b are respectively provided with three purge gas ports 9 on the surface in the vicinity thereof and communicated with each other. In addition, an orifice 28 and an orifice 29 are provided and communicated between the purge gas passage 11a and the compressed air passage 7a, and between the purge gas passage 11b and the compressed air passage 7c, respectively.

  In addition, screw holes 25 are provided around each connection port 5.

  As shown in FIG. 2, the gas separation membrane module 2 is configured such that the hollow fiber membranes 23 are bundled and accommodated in a cover 30 and a cover 27. The cover 30 includes a high-pressure wet air inlet 21 and a high-pressure dry air outlet 19 and is connected to the hollow fiber membrane 23. Further, the cover 30 is provided with a purge gas inlet 18 and a purge gas outlet 26 and communicates with each other via a purge gas flow path 22 which is a space between the hollow fiber membrane 23 and the cover 27. The cover 30 is provided with a screw hole 20 (see FIG. 1).

  A method for assembling the compressed air dehumidifier will be described with reference to FIGS. 1 and 3.

  As shown in FIG. 1, the high-pressure wet air inlet 21 and the high-pressure dry air outlet 19 of the gas separation membrane module 2 a are inserted into the connection port 5 of the manifold 1. The screw 15 is screwed into the screw hole 20 of the gas separation membrane module 2a and the screw hole 25 of the manifold 1, and the gas separation membrane module 2a and the manifold 1 are securely fixed.

  As shown in FIG. 3, the gas separation membrane module 2 b is similarly fixed to the opposite side across the manifold 1. Further, the compressed air introduction pipe 34 is connected to the connecting port 5 connected to the compressed air flow path 7d, and the compressed air supply pipe 35 is connected to the connecting port 5 connected to the compressed air flow path 7c, respectively, and securely fixed by screws 15 (FIG. 1). Further, the cover 38 is covered with the other connection port 5, and is firmly fixed by the screw 15.

  Further, the tip of the compressed air introduction pipe 34 is connected to an air compressor, and the tip of the compressed air supply pipe 35 is connected to an air tool.

  The usage method of this compressed air dehumidifier is demonstrated with reference to FIG.2 and FIG.4.

  As shown in FIG. 4, the compressed air 40 supplied from the air compressor 3, which is a high-pressure humid air inflow source, flows into the connection port 5 of the manifold 1 through the compressed air introduction pipe 34. Then, the compressed air 40 flows into the hollow fiber membrane 23b of the gas separation membrane module 2b from the high-pressure humid air inlet 21b through the compressed air flow path 7d.

  In the gas separation membrane module 2b, the water vapor in the compressed air 40 passes through the hollow fiber membrane 23b and flows into the purge gas channel 22b. Then, the compressed air 40 is dehumidified and flows into the manifold 1 from the high-pressure dry air outlet 19b (see FIG. 2).

  In the manifold 1, the compressed air 40 is supplied to the air tool 4 which is a high-pressure dry air outflow destination via the connection port 5, the compressed air flow path 7 c and the compressed air supply pipe 35.

  A part of the dehumidified compressed air 40 passes through the orifice 29 as the purge gas 41 and flows into the purge gas flow path 22b through the purge gas flow path 11b, the purge gas port 9 and the purge gas introduction port 18b. And the purge gas 41 which flowed in is discharged | emitted from the purge gas discharge port 26b with the water vapor | steam of the compressed air 40 which passed the hollow fiber membrane 23b and flowed into the purge gas flow path 22b (refer FIG. 2).

  Similarly, in the gas separation membrane module 2a connected to the upper portion, the compressed air 40 is dehumidified and supplied to the air tool 4, and the purge gas 41 containing water vapor is discharged from the purge gas discharge port 26a.

  Since the gas separation membrane modules 2a and 2b are connected in parallel, this compressed air dehumidifier can dehumidify and supply a larger amount of compressed air.

  FIG. 5 shows a schematic view of another compressed air dehumidifier to which the present invention is applied.

  The gas separation membrane modules 2 a and 2 c are connected in series to the upper part of the manifold 1. The compressed air introduction pipe 34 and the compressed air supply pipe 36 are connected to the same side surface of the manifold 1. Other than that, it has the same structure as the compressed air dehumidifier shown in FIG.

  In this compressed air dehumidifier, the compressed air 40 dehumidified in the gas separation membrane module 2a flows into the gas separation membrane module 2c via the compressed air connection channel 10 and is further dehumidified. Therefore, this compressed air dehumidifier can supply compressed air with lower humidity.

  FIG. 6 shows a schematic view of another compressed air dehumidifier to which the present invention is applied.

  It has the same structure as the compressed air dehumidifier shown in FIG. 5 except that the gas separation membrane module 2b is connected and the compressed air supply pipe 35 is connected to the connecting port 5 of the compressed air flow path 7c.

  In this compressed air dehumidifier, the compressed air 40 dehumidified in the gas separation membrane module 2 a is supplied to the air tool 4 d from the compressed air supply pipe 35 and is also supplied to the gas separation membrane module 2 c via the compressed air connection channel 10. Flow into. The compressed air 40 that has flowed in is further dehumidified and supplied to the air tool 4 e from the compressed air supply pipe 36. Therefore, this compressed air dehumidifier can separately supply compressed air having different dew points.

  FIG. 7 shows a schematic view of another compressed air dehumidifier to which the present invention is applied.

  The purge gas channel 11a and the purge gas channel 11b are connected by an external purge gas connection channel 45 and have the same structure as the compressed air dehumidifier shown in FIG. 5 except that only the orifice 28 is provided. is doing.

  In this compressed air dehumidifier, the purge gas 41 passes through the orifice 28 and flows into the purge gas flow path 22c of the gas separation membrane module 2c through the purge gas flow path 11a, the purge gas port 9, and the purge gas introduction port 18c. The purge gas 41 that has passed through the orifice 28 flows to the purge gas flow path 22a via the purge gas connection flow path 45, the purge gas flow path 11b, the purge gas port 9, and the purge gas introduction port 18a.

  That is, in this compressed air dehumidifier, the purge gas 41 is collectively controlled by the orifice 28, so that the dehumidifying operation can be performed easily.

  In the compressed air dehumidifier, the gas separation membrane module 2 may be further connected to the vacant connection port 5.

  In addition, the connection port 5 is covered with the cover 38 and fixed with the screw 15, but instead, the connection port 5 is threaded and covered and fixed with a plug or the like. May be.

  Further, the manifold of the compressed air dehumidifier to which the present invention is applied may be provided with a variable flow rate valve instead of the orifices 28 and 29.

  FIG. 8 shows a schematic view of another compressed air dehumidifier to which the present invention is applied.

  In this compressed air dehumidifier, gas separation membrane modules 2 a, 2 b and 2 c are connected to a manifold 1.

  In the manifold 1, air compressors 3 a, 3 b and 3 c are connected to connecting ports 5 a, 5 b and 5 c via compressed air flow paths 8, respectively, and valves 6 a, 6 h and 6 o as flow path closing means are provided between them. It has been. Similarly, the air tools 4a, 4b, and 4c are connected to the connection ports 5d, 5e, and 5f via the compressed air flow path 8, respectively, and valves 6b, 6i, and 6p are provided as flow path closing means therebetween. ing.

  The manifold 1 is connected between the valve 6a and the connection port 5a, and between the valve 6h and the connection port 5b via the flow path 8, and is provided with a valve 6c and a valve 6f. Similarly, valves 6j and 6m, 6d and 6g, 6k and 6n are provided.

  Further, a valve 6e is provided between the valve 6c and the valve 6f, and between the valve 6d and the valve 6g via the flow path 8. Similarly, a valve 6l is provided.

  The gas separation membrane module 2a has a high-pressure wet air inlet 21a and a high-pressure dry air outlet 19a connected to the connection ports 5a and 5d, respectively. Similarly, gas separation membrane modules 2 b and 2 c are connected to the manifold 1.

  The usage method of this compressed air dehumidifier is demonstrated with reference to FIG.

  The high-pressure wet air inlet 21a and the high-pressure dry air outlet 19a of the gas separation membrane module 2a are connected to the connection ports 5a and 5d, respectively. Similarly, the gas separation membrane modules 2b and 2c are connected to each other.

  The valves 6b, 6c, 6g, 6h, 6i, 6j, 6n and 6o are closed. Then, the gas separation membrane modules 2a, 2b and 2c are connected in series in that order between the inflow source 3a and the outflow destination 4c.

  Compressed air flows into the compressed air flow path 8 from the air compressor 3a. The compressed air passes through the valve 6a and flows into the gas separation membrane module 2a from the high-pressure humid air inlet 21a to be dehumidified. The dehumidified compressed air flows into the gas separation membrane module 2b from the high pressure dry air outlet 19a through the valve 6d, the valve 6e and the valve 6f, and is further dehumidified. The dehumidified compressed air flows into the gas separation membrane module 2c through the valve 6k, the valve 61, and the valve 6m, and is dehumidified. The dehumidified compressed air is supplied to the air tool 4c through the valve 6p. Therefore, the compressed air dehumidifier can supply compressed air with lower humidity.

  Another method of using the compressed air dehumidifier will be described with reference to FIG.

  The high-pressure wet air inlet 21a and the high-pressure dry air outlet 19a of the gas separation membrane module 2a are connected to the connection ports 5a and 5d of the manifold 1, respectively. Similarly, the gas separation membrane modules 2b and 2c are connected to each other.

  Valves 6a, 6b, 6e, 6l, 6o and 6p are closed. Then, the gas separation membrane modules 2a, 2b and 2c are connected in parallel between the inflow source 3b and the outflow destination 4b.

  Compressed air flows into the compressed air flow path 8 from the air compressor 3b. The compressed air passes through the valve 6h and is divided into three directions.

  The compressed air that has passed through the valves 6f and 6c flows into the gas separation membrane module 2a, is dehumidified, and merges through the valves 6d and 6g. The compressed air flows into the gas separation membrane module 2b, is dehumidified, and merges. The compressed air that has passed through the valve 6j and the valve 6m flows into the gas separation membrane module 2c, is dehumidified, and merges through the valves 6n and 6k.

  Then, the dehumidified compressed air is supplied to the air tool 4b through the valve 6i. Therefore, the compressed air dehumidifier can dehumidify and supply a larger amount of compressed air.

  Another method of using the compressed air dehumidifier will be described with reference to FIG.

  The high-pressure wet air inlet 21a and the high-pressure dry air outlet 19a of the gas separation membrane module 2a are connected to the connection ports 5a and 5d of the manifold 1, respectively. Similarly, the gas separation membrane modules 2b and 2c are connected to each other.

  The valves 6b, 6c, 6g, 6h, 6j, 6n and 6o are closed. Then, the compressed air dehumidifier is connected in the same manner as in FIG. 9 except that the manifold 1 is connected to the air tool 4b by opening the valve 6i.

  Compressed air flows into the compressed air flow path 8 from the air compressor 3a. The compressed air flows into the gas separation membrane module 2a through the valve 6a and is dehumidified. The compressed air passes through the valve 6d, the valve 6e, and the valve 6f and flows into the gas separation membrane module 2b to be dehumidified. The dehumidified compressed air is divided into two parts. One compressed air is supplied to the air tool 4b through the valve 6i. The other compressed air passes through the valve 6k, the valve 6l and the valve 6m, flows into the gas separation membrane module 2c, and is dehumidified. The dehumidified compressed air is supplied to another air tool 4c through the valve 6p. Therefore, the compressed air dehumidifier can separately supply compressed air having different dew points according to the application.

  Another method of using the compressed air dehumidifier will be described with reference to FIG.

  The high-pressure wet air inlet 21a and the high-pressure dry air outlet 19a of the gas separation membrane module 2a are connected to the connection ports 5a and 5d of the manifold 1, respectively. Similarly, the gas separation membrane module 2c is connected.

  The valves 6c, 6d, 6m and 6n are closed. Then, the gas separation membrane module 2a is connected between the inflow source 3a and the outflow destination 4a, and the gas separation membrane module 2c is connected between the inflow source 3c and the outflow destination 4c.

  Compressed air flows into the compressed air flow path 8 from the air compressor 3a. The compressed air flows into the gas separation membrane module 2a through the valve 6a and is dehumidified. Then, the dehumidified compressed air is supplied to the air tool 4a through the valve 6b.

  Moreover, another compressed air flows in from the air compressor 3c. The compressed air flows into the gas separation membrane module 2c through the valve 6o and is dehumidified. Then, the dehumidified compressed air is supplied to another air tool 4c through the valve 6p.

  Therefore, the compressed air dehumidifier can dehumidify and supply different compressed air separately.

It is a perspective view which shows the connection middle of the gas separation membrane module of the compressed air dehumidifier to which this invention is applied. It is sectional drawing of the gas separation membrane module of the compressed air dehumidifier to which this invention is applied. It is a perspective view which shows the compressed air dehumidifier to which this invention is applied. It is the schematic which shows the middle of use of the compressed air dehumidifier to which this invention is applied. It is the schematic which shows the middle of use of another compressed air dehumidifier to which this invention is applied. It is the schematic which shows the middle of use of another compressed air dehumidifier to which this invention is applied. It is the schematic which shows the middle of use of another compressed air dehumidifier to which this invention is applied. It is the schematic which shows the connection middle of the gas separation membrane module of another compressed air dehumidifier to which this invention is applied. It is the schematic which shows the middle of use of another compressed air dehumidifier to which this invention is applied. It is the schematic which shows the middle of use of another compressed air dehumidifier to which this invention is applied. It is the schematic which shows the middle of use of another compressed air dehumidifier to which this invention is applied. It is the schematic which shows the middle of use of another compressed air dehumidifier to which this invention is applied. It is a perspective view which shows the conventional compressed air dehumidifier.

Explanation of symbols

  1 is a manifold, 2, 2a, 2b and 2c are gas separation membrane modules, 3, 3a, 3b and 3c are air compressors, 4, 4a to 4c are air tools, 5, 5a to 5f are connection ports, and 6a to 6p are Valves, 7a to 7d are compressed air flow paths, 8 is compressed air flow paths, 9 is a purge gas port, 10 is a compressed air connection flow path, 11a and 11b are purge gas flow paths, 15 is a screw, 18, 18a, 18b and 18c Is a purge gas inlet, 19, 19a, 19b and 19c are high-pressure dry air outlets, 20 are screw holes, 21, 21a, 21b and 21c are high-pressure wet air inlets, 22, 22a, 22b and 22c are purge gas flow paths, 23 is a hollow fiber membrane, 25 is a screw hole, 26, 26a, 26b and 26c are purge gas discharge ports, 27 is a cover, 28 is an orifice, 29 is an orifice, 30 is a cover 34 is a compressed air introduction pipe, 35 is a compressed air supply pipe, 36 is a compressed air supply pipe, 38 is a cover, 40 is compressed air, 41 is a purge gas, 45 is a purge gas connection flow path, 55 is a manifold, 56 is an orifice, 57 Is a purge gas flow path.

Claims (8)

  Gas having a gas separation membrane tube connected to the high-pressure wet air inlet and the high-pressure dry air outlet, and a space in which a part of the high-pressure dry air is introduced and discharged as a purge gas between the tube and the cover of the tube In a compressed air dehumidifier equipped with a separation membrane module, wherein high-pressure humid air is discharged into the space through the cylinder, the high-pressure wet air inlet and the high-pressure dry air outlet of a plurality of gas separation membrane modules are connected A compressed air dehumidifier comprising a manifold capable of connecting a purge gas inlet and an outlet of the space of each gas separation membrane module to each other.   The cylinder and the cover of the gas separation membrane module are U-shaped, and the high-pressure wet air inlet and the high-pressure dry air outlet are connected to the manifold in the same direction. Item 2. A compressed air dehumidifier according to Item 1.   Each high-pressure wet air inlet and each high-pressure dry air outlet of a plurality of gas separation membrane modules connected to the manifold can be independently connected to a high-pressure wet air inlet and a high-pressure dry air outlet. The compressed air dehumidifier according to claim 1, wherein   2. The flow path in which each high-pressure wet air inlet and each high-pressure dry air outlet of a plurality of gas separation membrane modules connected to the manifold are sequentially connected is formed in the manifold. Compressed air dehumidifier as described.   The high pressure wet air inlets of a plurality of gas separation membrane modules connected to the manifold are connected to each other, and a flow path to which the high pressure dry air outlets are connected is formed in the manifold. Item 2. A compressed air dehumidifier according to Item 1.   A flow path connecting all the high-pressure wet air inlets and all the high-pressure dry air outlets of the plurality of gas separation membrane modules connected to the manifold is formed in the manifold, and a channel closing means is connected to each of the connection flow paths. The compressed air dehumidifier according to claim 1, wherein:   The compressed air dehumidifier according to claim 1, wherein the manifold is connected to the manifold at a part of the manifold connection ports to which the plurality of modules can be connected.   The compressed air dehumidifier according to claim 1, wherein the manifold is a substantially polyhedron, and at least two gas separation membrane modules can be connected to the polyhedron substantially vertically.

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