JPH0624726U - Horizontal PSA device - Google Patents

Abstract

(57) [Abstract] [Objective] A horizontal PSA device. [Construction] A horizontal PSA device in which an inflatable / compressible air bag is installed inside the adsorbent filling tank of the adsorbent filling tank so as to fill the gap between the inner wall of the filling tank and the filler.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a horizontal PSA device.

[0002]

[Prior art]

 One mode of a conventional PSA device is shown in FIG. An adsorbent 02 is filled in the filling tank 01, and a pipe is connected from one end of the filling tank 01 to the untreated gas injection valve 03 and the vacuum exhaust valve 05. Further, pipes are connected from the other end of the filling tank 01 to the treated gas discharge valve 04 and the purified gas injection valve 06.

In this PSA apparatus, in the adsorption step, the vacuum exhaust valve 05 and the purified gas injection valve 06 are closed and the unprocessed gas injection valve 03 and the processed gas discharge valve 04 are opened to inject the unprocessed gas into the filling tank 01. Specific components in gas (eg CO₂, NH ₃ , O₂, Freon, etc.) is adsorbed on the adsorbent 02, and a treated gas that has passed through without being adsorbed on the adsorbent 02 is obtained.

Next, in the desorption process, the valve operation opposite to that in the adsorption process is performed, the pressure inside the filling tank 01 is reduced by a vacuum pump (not shown), and a small amount of purified gas is injected into the filling tank 01. Then, the specific component adsorbed on the adsorbent 02 is desorbed and discharged through the vacuum discharge valve 05. By repeating the above cycle, the specific gas component in the untreated gas is recovered or the specific gas component is purified.

In the conventional horizontal PSA apparatus, as shown in the vertical sectional view of FIG. 6, in order to inject the adsorbent 02 into the filling tank 01, the adsorbent 02 is injected from a plurality of injection ports 07 provided above the filling tank 01. Be done. Reference numeral 09 represents a lid that closes the inlet. Since the adsorbent 02 is gradually consolidated by the pressure swing, it is necessary to replenish the filling tank 01 at all times by gradually replenishing it from the injection port 07 so that a gap 08 (hereinafter referred to as an assault area) does not occur in the filling tank 01. There is.

[0006]

[Problems to be solved by the device]

 In the conventional horizontal PSA apparatus, when the adsorbent 02 is injected into the filling tank 01, a plurality of injection ports 07 are provided above the filling tank. Further, since the adsorbent 02 is compacted by repeating the pressure swing, the asthma region 08 is generated in the filling tank 01. Since the resistance in the asbestos region 08 is small and the gas flows to the portion in a biased manner, it is difficult to make a uniform flow in the filling tank 01, and the performance of the PSA device is deteriorated. For this reason, it is necessary to reduce the asthma region 08 in the filling tank 01 to uniformly fill the adsorbent 02 and to make a uniform flow in the filling tank 01.

In view of the above-mentioned state of the art, the present invention aims to provide a horizontal PSA device capable of reducing the asthma area.

[0008]

[Means for Solving the Problems]

 The present invention is characterized in that an expandable and compressible air bag is installed inside the adsorbent inlet of the adsorbent filling tank so as to fill the gap between the inner wall of the adsorbent and the filled adsorbent. It is a horizontal PSA device.

That is, the present invention is a horizontal PSA device in which an inflatable / compressible air bag is installed inside a plurality of filling ports provided in the upper part of the filling tank of the horizontal PSA device.

[0010]

[Action]

 Due to the internal pressure of the air bag, the air bag always fills the asthmatic area between the filling tank and the adsorbent, preventing the gas flow to the asthmatic area and making the flow in the filling tank uniform and preventing performance deterioration. can do.

[0011]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a side view of a filling tank 1 of a horizontal PSA device, and FIG. 2 shows a plan view of the filling tank 1. The filling tank 1 is provided with a plurality of inlets 5 for injecting the adsorbent 2. An air bag 6 is attached to the inner wall portion of the filling tank 1 near the lower portion of the inlet 5 with a flexible material such as a rubber sheet. An air source such as a compressor (not shown) is connected to the air bag 6 by a pressure adjusting pipe 7, and the pressure inside the air bag 6 can be adjusted by an adjusting valve 8 in the middle of the pipe 7. It has become. In addition, 3 indicates an untreated gas inlet and 4 indicates a treated gas outlet.

FIGS. 3 and 4 are sectional views taken along the line AA of FIG. 1 to clarify the operation of the apparatus of this embodiment. FIG. 3 shows a state immediately after the adsorbent 2 is filled, and the air bag 6 is in a compressed state so as to fill a slight asthmatic area inside the filling tank 1 as shown at 6a. Fig. 4 shows a state in which the horizontal PSA device is in operation, the pressure swing is repeated several times to consolidate the adsorbent 2, and the associative area with the inner wall of the filling tank greatly expands. As indicated by 6b, 6 is expanded by the pressure applied from the pressure regulating pipe 7 in FIG. 1 to fill this anthropic region. By adjusting the adjusting valve 8, the air bag 6 can always fill the above-mentioned assault area, prevent the gas from flowing into the filling tank 1 into the assault area, and lower the adsorption / desorption efficiency. Is prevented.

[0013]

[Effect of device]

 By installing an inflatable / compressible air bag inside the adsorbent filling port of the adsorbent filling tank, it is possible to fill the asthma area formed in the adsorbent filling tank, so that the gas flow in the filling tank can be reduced. It can be made uniform and the efficiency of adsorption and desorption can be improved.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of a horizontal PSA device of the present invention.

FIG. 2 is a plan view of the horizontal PSA device shown in FIG.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1 immediately after filling the filler.

FIG. 4 is a cross-sectional view taken along the line AA of FIG. 1 after the pressure swing is repeated several times.

FIG. 5 is a configuration diagram of one aspect of a conventional horizontal PSA device.

FIG. 6 is a vertical cross-sectional view of one aspect of a conventional horizontal PSA device.

[Explanation of symbols]

 1 Filling tank 2 Adsorbent 3 Untreated gas inlet 4 Treated gas outlet 5 Injection port 6 Air bag 7 Pressure adjusting pipe 8 Control valve

Claims (1)

[Scope of utility model registration request] 1. An expandable and compressible air bag is installed inside the adsorbent inlet of the adsorbent filling tank so as to fill a gap between the inner wall of the adsorbent and the filled adsorbent. Horizontal PSA device.