JP2569751Y2 - 1 cylinder 2 layer dehumidifier - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-cylinder two-layer dehumidifier for removing moisture in compressed air and extracting it as dry air while one layer is being dehumidified. The present invention relates to a single-layer, two-layer type dehumidifier that regenerates one layer of a pair as a regenerating layer, and switches and uses after regenerating (heating and cooling). [0002] Conventionally, when a compressed gas is continuously dried, the compressed gas is dried using two dehumidifying cylinders filled with an adsorbent such as activated alumina gel, silica gel and synthetic zeolite. Meanwhile, hot air is passed through the other dehumidifying cylinder using a blower to regenerate and cool the adsorbent with cold air to reactivate the adsorbent. By performing such operations alternately by switching the timer, continuous drying of the compressed gas is performed. [0003] At this time, the hot air used for the regeneration of the adsorbent is produced by heating a gas sent by a blower using high-pressure steam, electricity from an electric heater or the like, but the energy consumed by this is large. [0004] Since compressed air is widely used in various factories among compressed gases, it is difficult to save energy consumed in regenerating a desiccant.
Users of these dehumidifiers have been eager to do so.
Also, many cylinders to be filled with the adsorbent are vertical, and the switching time is long, so that a large amount of the adsorbent is filled. For example, in recent years
Equipped with a cooler that cools the gas after dehumidification,
Let the low temperature gas passed through the cooler into the cylinder
Dehumidifiers for regeneration of adsorbent are provided,
Until the gas in the gas circuit of the dehumidifier is replaced,
Since the regeneration and dehumidification do not proceed effectively, the switching time
It will be longer. [0005] In the vertical dehumidifying cylinder, the adsorbent filled in the cylinder is often not effectively used because the flow path flowing in the cylinder is deviated due to fluctuations in the gas flow rate or the like. The present invention effectively solves the above-mentioned problem, and can save energy consumed for regenerating a desiccant.
It is an object of the present invention to provide a one-cylinder two-layer dehumidifier capable of reducing the size of a dehumidifier and effectively utilizing an adsorbent in a cylinder. The one-tube two-layer dehumidifier of the present invention uses one of a pair of dehumidifier layers as a dehumidifier layer, regenerates the other, switches between them, regenerates one, and uses the other as a dehumidifier layer. And two opposing dehumidifying layers, each of which is filled with an adsorbent and has a partition wall for avoiding thermal contact with each other in one cylinder, and a low-temperature gas to be dehumidified for these dehumidifying layers. A dehumidification gas inlet to be introduced,
A regeneration hot gas inlet into which a high-temperature and high-pressure regeneration high-temperature gas obtained by compressing a gas to be dehumidified by a compressor is introduced, a cooler for cooling the gas passed through any of the dehumidification layers, and the cooler Drain separator for separating the water condensed in the above, a merger for merging the gas to be dehumidified and the gas cooled and regenerated by the cooler, a merger, a dehumidifying gas inlet, and a high-temperature gas inlet for regeneration And a pair of switching valves that are connected to each dehumidifying layer in a switchable manner to allow gas to flow in and out, and that one of the switching valves is dehumidified by both.
Upstream of the one-way switching valve,
Use the dehumidifying gas inlet and the hot gas inlet for regeneration alternately
And a three-way switching valve for connecting
One-way switching valve and three-way switching valve
Disconnect the wet gas inlet, regeneration hot gas inlet, and junction
The cooler, the drain separator, and the merger connected between the downstream side of the other switching valve connected to the downstream side of both dehumidification layers and the upstream side of the one switching valve are configured to be replaceable. A switchable connection to the two dehumidifying layers via a switching valve, and a merger by one of the switching valves;
Regeneration and dehumidification of each dehumidification layer are switched by switching the connection between the dehumidification gas inlet and the high-temperature gas inlet for regeneration to each dehumidification layer, and even after the switching, the gas flowing out of each dehumidification layer passes through the other switching valve. Each dehumidifying layer is provided with a partition plate for partitioning the adsorbent filled therein, and both the gas to be dehumidified and the high-temperature gas for regeneration are provided. Both are characterized by dehumidification without loss. The drain separator may be provided between the pair of dehumidifying layers. The one-cylinder two-layer dehumidifier of the present invention uses a heat source and a blower which generate hot air required for regeneration by using the energy of the high-temperature and high-pressure gas discharged from the compressor for regeneration of the adsorbent. It is possible to fill a large amount of adsorbent and process a large amount of compressed gas by slightly increasing the diameter of the cylinder to fill the adsorbent by dividing the cylinder horizontally and filling the adsorbent. It was made. Further, the gas flowing into the dehumidifying layer may be a gas obtained by merging a low-temperature gas to be dehumidified and a gas cooled and regenerated by a cooler with a merger, a gas to be dehumidified, or a high-temperature gas for regeneration. The adsorbent is heated and cooled by switching the gas flowing into the dehumidifying layer by the switching valve, and the adsorbent is regenerated and the gas to be dehumidified is dehumidified. At this time, on the upstream side of the dehumidification layer
The gas that flows into the dehumidifying layer from one of the switching valves
Instead, it does not reverse the gas flow, so dehumidification
From layer to other switching valve, cooler, merger, one switching valve
The length of the pipe line does not affect the switching time,
Raw and dehumidification can be switched quickly. An embodiment of the present invention will be described below with reference to the drawings. In the drawing, reference numerals 6a and 6b are dehumidifying layers,
It is filled with an adsorbent (silica gel, activated alumina gel, synthetic zeolite, activated carbon, etc.). 4, 8 are four-way switching valves (four-way valves), 19 is three-way switching valves (three-way valves), 1
2 is a cooler, 14 is a drain separator, 2 is a merger, 1, 3, 5, 7, 9, 11, 13, 15, 16, 1
7, 18, and 20 are tubes. Here, 1 is an inlet for a gas to be dehumidified, 20 is a high-temperature gas inlet for regeneration, and 9 is a tube used for a dry gas outlet. Reference numerals 5 and 16 denote gas inlet tubes connected to the dehumidifying layers 6a and 6b.
a, a gas outlet tube connected to 6b. Reference numeral 21 denotes a partition for avoiding thermal contact between the dehumidifying layers 6a and 6b. A pair of four-way switching valves 4 and 8 are connected to the dehumidifying layers 6a and 6b, respectively, so that an inflow gas to be dehumidified and a high-temperature gas for regeneration flow alternately. A cooler 12, a drain separator 14, and a merger 2 are connected between the pair of four-way switching valves 4, 8. One side cut
The other four-way switching valve 8 is connected to the dehumidifying layers 6a and 6b.
Is located downstream via. To one four-way switching valve 4
Is a dehumidifying gas inlet 1 through a three-way valve 19, and a high-temperature gas for regeneration.
The inlet 20 is switchably connected, and the junction 2 is connected.
The four-way switching valve 4 is provided for the dehumidifying layers 6a and 6b.
Dehumidification gas inlet 1, high temperature gas inlet 20 for regeneration, merge
The device 2 is switchably connected. Next, how to dehumidify and regenerate the adsorbent using a dehumidifier will be described. The gas to be dehumidified passes through the pipe 1, passes through the merger 2, passes through the pipe 3, passes through the four-way valve 4, and enters the dehumidification layer 6a through the pipe 5. Dehumidifying layer 6
The gas dehumidified in a passes through the pipe 7 and is supplied from the four-way valve 8 through the pipe 9 as a dry gas. On the other hand, the high-temperature gas for regeneration enters the regeneration layer 6b from the four-way valve 4 through the pipe 16 through the pipe 20, the three-way valve 19, and the pipe 17, and drives out the water contained in the adsorbent filled therein. After passing through the four-way valve 8 and the pipe 11, the water cooled in the cooler 12 is separated from the pipe 13 by the drain separator 14, and then guided to the merger 2 through the pipe 15. After a certain period of time, the three-way valve 19 is switched, and the low-temperature gas to be dehumidified passes through the pipe 18 from the inlet pipe 1, passes through the three-way valve 19, passes through the pipe 17, the four-way valve 4, the pipe 16, and the regeneration layer 6b. After the adsorbent is cooled and the adsorbent is reactivated, the pipe 10, the four-way valve 8, the pipe 11, the cooler 12, the pipe 1
3. The drain gas is guided to the drain separator 14, the pipe 15, and the merger 2, and is supplied as a dry gas through the pipe 3, the four-way valve 4, the pipe 5, the dehumidifying layer 6a, the pipe 7, the four-way valve 8, and the pipe 9. That is, the regeneration layer 6b is cooled by the dehumidified low-temperature gas. After cooling, the four-way valves 4 and 8 are switched, the opposite layer (dehumidifying layer 6a) is regenerated, and the dehumidifying layer 6b is used as a dehumidifying layer. As described above, the gas is continuously dehumidified while being alternately switched, and the dehumidified gas regeneration high-temperature gas is dehumidified without loss, and supplied as a dry gas. this
When switching between dehumidification and regeneration, the dehumidification layers 6a and 6b
Dehumidifying layers 6a, 6b from one four-way valve 4 arranged on the upstream side
The gas flowing into the air is switched and reverses the gas flow
Because it is not a translation, the other four-way valve from the dehumidifying layers 6a and 6b
8, a cooler 12, a merger 2, and a pipeline to one four-way valve 4
Regeneration and dehumidification of adsorbent without length of switching affecting the switching time
Are switched quickly, and the switching time is shortened. As shown in FIG. 2, each dehumidifying layer 6a, 6b has a partition plate for guiding a gas to be dehumidified in order to effectively use the adsorbent inside each dehumidifying layer 6a, 6b. Two sheets 40 and 40 are provided. Although two partition plates 40, 40 are used, one partition plate may be used as shown in FIG. In these FIGS. 2 and 3, the arrows indicate the gas flow. As shown in FIG. 4, a demister 51 and a demister 5 are provided between the pair of dehumidifying layers 6a and 6b.
A drain separator having a drain trap 52 for taking out the water removed by 1 may be provided. By providing the drain separator between the dehumidifying layers 6a and 6b, the dehumidifying device can be reduced in size and space can be further reduced. As described above, according to the present invention, one of the two dehumidifying layers is always used as the regenerating layer, and the dehumidifying and the regenerating can be sequentially switched, and the compression can be performed. Since the compression heat of the machine can be regenerated and used, the heat source (steam, electricity, gas, etc.) can be made unnecessary, and the energy-saving effect can be fully exhibited, and it is a two-layer type with one cylinder. Since only one pressure vessel needs to be manufactured, there is an advantage that the inspection cost can be reduced by half as compared with a device which performs two cylinders. Also, in particular, one of the pair of dehumidifying layers is used as a dehumidifying layer, the other is regenerated, these are switched, one is regenerated, and the other is used as a dehumidifying layer. Can be dehumidified. For this reason, since the dehumidifying layer can be used effectively, the efficiency of the dehumidifying device can be improved. That is, a pair of switching valves for alternately inflow and outflow of the inflow gas to be dehumidified and the high-temperature gas for regeneration into each dehumidification layer are connected, and a cooler, a drain separator, Since the dehumidifier is connected, the inflow gas to be dehumidified can be dehumidified by one dehumidifier, and the high-temperature gas for regeneration can be flowed into the other dehumidifier and circulated to a cooler or the like. And a low temperature gas to be dehumidified by the switching valve,
Regeneration hot gas, by the merging gas inlet at converging device switched by connecting the switching valve and the dehumidification layer, it is possible to switch the gas to flow into the respective dehumidification layers, or dehumidifying layer
To the other switching valve, cooler, merger, and one switching valve
Short switching time because there is no need to reverse the gas flow
And switch between dehumidification and regeneration efficiently.
Thereby, the dehumidifier can be used continuously, and the dehumidifying efficiency of the dehumidifier can be improved. In addition, since these dehumidifying layers are provided in a single cylinder, the size of the dehumidifying device can be reduced as compared with the case where the dehumidifying layers are separately provided. Furthermore, since each dehumidifying layer is provided with a partition plate for partitioning the adsorbent filled therein, the flow paths of various gases flowing through each dehumidifying layer can be formed long, and the adsorbent of each dehumidifying layer and various The contact area with the gas can be increased, and the utilization efficiency of the adsorbent in the dehumidifying layer can be improved. Further, by providing the drain separator between the pair of dehumidifying layers, the dehumidifier can be downsized and the space can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a single-cylinder two-layer dehumidifier of the present invention. FIG. 2 is a configuration diagram showing the inside of the dehumidification layer of FIG. 1; FIG. 3 is a configuration diagram showing a modification of FIG. 2; FIG. 4 is a configuration diagram showing a modification of FIG. 1; [Description of Signs] 19 Three-way valve 4.8 Four-way valve 2 Merging device 12 Cooler 14 Drain separator 6a, 6b Dehumidifying layer 51 Demister 52 Drain trap 1 Dehumidifying gas inlet 20 Regeneration hot gas inlet

Claims (1)

(57) [Rules for requesting registration of utility model] A dehumidifier that uses one of a pair of dehumidifying layers as a dehumidifying layer, regenerates the other, switches between them, regenerates one, and uses the other as a dehumidifying layer. Two opposed dehumidifying layers having partitions in the cylinder to avoid thermal contact with each other, a dehumidifying gas inlet through which low-temperature gas to be dehumidified flows into these dehumidifying layers, and a compressor for compressing the gas to be dehumidified. A high-temperature high-pressure gas for regeneration into which a high-temperature high-temperature gas for regeneration compressed by the above-mentioned method is introduced; a cooler for cooling the gas passed through any of the dehumidifying layers; and water condensed by the cooler is separated. A drain separator, a merging device for merging the gas to be dehumidified and the gas cooled and regenerated by the cooler, a merging device, a dehumidifying gas inlet, and a regeneration hot gas inlet for each dehumidifying layer. Cut A pair of switching valves that are exchangeably connected to allow gas to flow in and out , and that one of the switching valves is connected to the upstream side of both dehumidifying layers, and the upstream side of the one switching valve is Dehumidification gas inlet, regeneration
Three-way switching valve and front for alternate use of hot gas inlet for
Connected to the junction, and one of these switching valves and three-way switching
Dehumidification gas inlet for each dehumidification layer by valve, regeneration height
The cooler configured to be able to switch the connection of the hot gas inlet and the merger, and connected between the downstream side of the other switching valve connected to the downstream side of both dehumidifying layers and the upstream side of the one switching valve,
A drain separator and a merger are switchably connected to the two dehumidifying layers via the other switching valve, and one of the switching valves connects a merger, a dehumidifying gas inlet, and a regeneration hot gas inlet to each other. By switching to the dehumidifying layer, regeneration and dehumidification of each dehumidifying layer are switched, and even after switching, the gas flowing out of each dehumidifying layer is sent to the merger or the drying gas outlet via the other switching valve. Each of the dehumidifying layers is provided with a partition plate for partitioning the adsorbent filled therein to dehumidify both the gas to be dehumidified and the high-temperature gas for regeneration without loss. A cylinder two-layer dehumidifier. 2. Between the pair of dehumidifying layer 1 of claim 1 wherein characterized in that the drain separator is provided
A two-layer cylinder type dehumidification storage.