A multi-in multi-out multi-purity mixed gas purification device

Abstract

The present application belongs to the technical field of mixed gas purification (adsorption separation) of different purities, and particularly relates to a multi-in (mixed gas of different purities)-out purification device, which comprises an adsorption tower with a cavity and capable of being filled with adsorbents, wherein the adsorption tower comprises adsorption units A, B, C and N arranged in sequence from bottom to top; during operation, the adsorption units are connected to form a one-way flow channel with a start end and an end end, each adsorption unit is provided with an inlet at the start end, and the inlets are distributed at intervals along the gas flow direction; the end end of the adsorption unit N is provided with an outlet, and the qualified gas produced flows out of the outlet; the mixed gas with a lower adsorbable component content flows into the inlet of the adsorption unit which is closer to the outlet. Based on the fact that multiple inlets can be arranged in multiple adsorption units, the inlets of the adsorption units serve as the way for gas to enter the adsorption tower, and the productivity of the adsorption tower is improved without destroying the purity gradient of the adsorption bed.

Description

Technical Field

[0001] This invention relates to the field of purification (adsorption separation) technology for mixed gases of different purities, specifically a multi-inlet (mixed gases of different purities) purification device with one outlet. Background Technology

[0002] An adsorption tower is a device that packs a solid adsorbent into a tower, so that certain components in the fluid entering the tower are adsorbed by the porous structure of the adsorbent, thereby achieving component separation.

[0003] Traditional adsorption towers used for separating components in mixed gases typically employ a one-inlet-one-outlet structure, where certain components of the gas entering the tower are adsorbed by the porous structure of the adsorbent, thus achieving component separation. However, for devices that simultaneously process multiple mixed gases with varying contents of adsorbable components, such as nitrogen adsorption towers that simultaneously process air and waste nitrogen, or coalbed methane purification adsorption towers that simultaneously process various methane contents, the traditional one-inlet-one-outlet structure is insufficient to achieve ideal results. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-inlet, single-outlet purification device for mixed gases of different purities, in order to solve the problem mentioned in the background art that the traditional single-inlet, single-outlet structure cannot achieve the desired effect for devices that simultaneously process multiple mixed gases with different adsorbable component contents, such as nitrogen adsorption towers that simultaneously process air and waste nitrogen, and coalbed methane purification adsorption towers that simultaneously process multiple methane contents.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-inlet, single-outlet purification device for mixed gases of different purities, comprising:

[0006] An adsorption tower having an internal cavity that can be filled with adsorbent, the adsorption tower comprising adsorption unit A, adsorption unit B, adsorption unit C and adsorption unit N arranged sequentially from bottom to top;

[0007] During operation, the adsorption units are connected to form a unidirectional flow channel with a beginning and an end. Each adsorption unit is provided with an inlet at the beginning, and these inlets are distributed at intervals along the gas flow direction.

[0008] The adsorption unit N is provided with an outlet, from which the qualified gas produced flows out;

[0009] The lower the content of the adsorbable component in the mixed gas flows into the inlet of the adsorption unit, the closer it is to the outlet; the higher the content of the adsorbable component in the mixed gas flows into the inlet of the adsorption unit, the farther it is from the outlet.

[0010] Preferably, the adsorption unit A is provided with an outlet at the beginning to discharge the gas in the adsorption tower after adsorption saturation.

[0011] Preferably, the inlet, the outlet, and the discharge outlet are each provided with a pneumatic or electric valve for opening and closing the inlet, the outlet, and the discharge outlet.

[0012] Preferably, the beginning and end of the adsorption units are connected by flanges or bolts.

[0013] Preferably, the beginning and end ends of the adsorption units are welded together.

[0014] Preferably, the adsorption units are connected by pipelines.

[0015] Preferably, the adsorption units are arranged in the same adsorption tower.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] 1) An adsorption tower composed of multiple adsorption units can be configured with multiple inlets based on the multiple adsorption units. The inlet of each adsorption unit serves as the path for gas to enter the adsorption tower, thereby increasing the adsorption tower's capacity without disrupting the purity gradient of the adsorption bed.

[0018] 2) Under certain pressure and temperature, the longer the mixed gas flows through the adsorption tower bed, the more thorough the contact between the mixed gas and the adsorbent, and the lower the content of adsorbable components in the mixed gas. Therefore, in this device, the mixed gas with a lower content of adsorbable components flows into the adsorption unit inlet closer to the outlet, while the mixed gas with a higher content of adsorbable components flows into the adsorption unit inlet farther from the outlet. This allows for the selection of specific inlets based on actual conditions, achieving the desired treatment effect while preventing the problem of over-adsorption of mixed gas with low adsorbable component content by the adsorbent. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] In the diagram: 100, adsorption tower; 10, inlet; 20, outlet; 30, discharge outlet. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Example:

[0024] Please see Figure 1 This invention provides a technical solution: a multi-inlet, single-outlet purification device for mixed gases of different purities, comprising:

[0025] An adsorption tower 100 having an internal cavity that can be filled with adsorbent, the adsorption tower 100 comprising adsorption unit A, adsorption unit B, adsorption unit C and adsorption unit N arranged sequentially from bottom to top;

[0026] During operation, the adsorption units are connected to form a unidirectional flow channel with a beginning and an end. Each adsorption unit is provided with an inlet 10 at the beginning, and these inlets 10 are distributed at intervals along the gas flow direction.

[0027] The adsorption unit N is provided with an outlet 20 at its end, and the qualified gas produced flows out from the outlet 20.

[0028] The lower the content of the adsorbable component in the mixed gas flows into the inlet 10 of the adsorption unit that is closer to the outlet 20, and the higher the content of the adsorbable component in the mixed gas flows into the inlet 10 of the adsorption unit that is farther from the outlet 20.

[0029] Adsorption units A, B, C, and N are stacked sequentially from bottom to top, with their beginning and end connected sequentially, so that each adsorption unit A, B, C, and N is connected in series and forms a unidirectional flow channel during operation.

[0030] Inlet 10 is used to supply mixed gas into the flow channel. The appropriate inlet 10 is selected according to the content of adsorbable components in the mixed gas. The more adsorbable components in the mixed gas, the closer the inlet 10 is to the lower side is selected; the less adsorbable components in the mixed gas, the closer the inlet 10 is to the upper side is selected.

[0031] Please see Figure 1 The present invention provides a technical solution: the adsorption unit A is provided with an outlet 30 at the beginning, and the gas in the adsorption tower 100 is discharged after the adsorption is saturated.

[0032] Please see Figure 1This invention provides a technical solution: pneumatic or electric valves for opening and closing the inlet 10, outlet 20, and discharge outlet 30 are all provided at the inlet 10, outlet 20, and discharge outlet 30. By using pneumatic or electric valves, some inlets 10, outlets 20, and discharge outlets 30 can be closed or opened, thereby selectively controlling the direction of gas flow.

[0033] The adsorption units can be connected in the following four ways (other connection methods are also possible):

[0034] The first method involves connecting the beginning and end of the adsorption units via flanges or bolts.

[0035] The second method involves welding the beginning and end points of the adsorption units together.

[0036] The third type: The adsorption units are connected by pipelines. In this connection method, the adsorption unit is an independent adsorption tower.

[0037] The fourth type: the adsorption units are arranged in the same adsorption tower.

[0038] Under certain pressure and temperature, the longer the mixed gas flows through the adsorption tower bed, the more sufficient the contact between the mixed gas and the adsorbent, and the lower the content of the adsorbable component in the mixed gas. Therefore, in this device, the mixed gas with a lower content of adsorbable components flows into the adsorption unit inlet 10, which is closer to the outlet 20, while the mixed gas with a higher content of adsorbable components flows into the adsorption unit inlet 10, which is farther from the outlet 20.

[0039] Taking a two-inlet, one-outlet gas separator as an example. Mixed gas A has an adsorbable component content of C1% and a flow rate of Q1; mixed gas B has an adsorbable component content of C2% and a flow rate of Q2; the final mixed gas C has an adsorbable component content of C3% and a flow rate of Q3. In this example, C1 > C2 > C3. The adsorption tower 100 includes two adsorption units, namely adsorption unit A and adsorption unit B. The adsorption dose Ga of adsorption unit A is the adsorption dose required to purify the adsorbable component content in mixed gas A from C1% to C2%; the adsorption dose Gb of adsorption unit B is the sum of the adsorption dose required to purify the adsorbable component content in mixed gas A from C2% to C3% and the adsorption dose required to purify the adsorbable component content in mixed gas B from C2% to C3%.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A purification device for mixed gases of different purities with multiple inlets and one outlet, characterized in that, include: An adsorption tower (100) having an internal cavity that can be filled with adsorbent, the adsorption tower (100) comprising adsorption unit A, adsorption unit B, adsorption unit C and adsorption unit N arranged sequentially from bottom to top; During operation, the adsorption units are connected to form a unidirectional flow channel with a beginning and an end. Each adsorption unit is provided with an inlet (10) at the beginning, and these inlets (10) are distributed at intervals along the gas flow direction. The adsorption unit N is provided with an outlet (20) at its end, and the qualified gas produced flows out from the outlet (20); The gas with a lower content of adsorbable components flows into the inlet (10) of the adsorption unit that is closer to the outlet (20), while the gas with a higher content of adsorbable components flows into the inlet (10) of the adsorption unit that is farther from the outlet (20).

2. The purification device for a mixture of gases with different purities with multiple inlets and one outlet as described in claim 1, characterized in that: The adsorption unit A is provided with an outlet (30) at the beginning, and the gas in the adsorption tower (100) is discharged after the adsorption is saturated.

3. The purification device for a mixture of gases with different purities with multiple inlets and one outlet as described in claim 2, characterized in that: Each of the inlet (10), the outlet (20), and the discharge outlet (30) is provided with a pneumatic or electric valve for opening and closing the inlet (10), the outlet (20), and the discharge outlet (30).

4. The purification device for a mixture of multiple inlets and one outlet gases of different purities according to claim 1, characterized in that: The adsorption units are connected at their beginning and end points by flanges and bolts.

5. The purification device for a mixture of gases with different purities with multiple inlets and one outlet as described in claim 1, characterized in that: The adsorption units are welded together at their beginning and end points.

6. The purification device for a mixture of multiple inlets and one outlet gases of different purities according to claim 1, characterized in that: The adsorption units are connected by pipelines.

7. The purification device for a mixture of multiple gases of different purities with multiple inlets and one outlet as described in claim 1, characterized in that: The adsorption units are arranged in the same adsorption tower.

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