CN210186773U - Pressure swing adsorption gas separation system without energy consumption and capable of improving desorption effect - Google Patents
Pressure swing adsorption gas separation system without energy consumption and capable of improving desorption effect Download PDFInfo
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- CN210186773U CN210186773U CN201920870887.8U CN201920870887U CN210186773U CN 210186773 U CN210186773 U CN 210186773U CN 201920870887 U CN201920870887 U CN 201920870887U CN 210186773 U CN210186773 U CN 210186773U
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Abstract
The utility model discloses a pressure swing adsorption gas separation system of desorption effect is improved to no energy consumption solves prior art and in the unsatisfactory problem of operation in-process regeneration flushing gas desorption effect. The utility model discloses a feed gas conveyer pipe, desorption gas defeated outside pipe, product gas defeated outside pipe, regeneration flushing gas conveyer pipe, heat exchanger and an at least adsorption tower, the heat exchanger respectively with product gas defeated outside pipe and regeneration flushing gas duct connection for the product gas that makes regeneration flushing gas in the regeneration flushing gas conveyer pipe and the product gas defeated outside pipe carries out the heat transfer. The utility model has the advantages of simple structure and scientific and reasonable design, convenient to use can directly utilize pressure swing adsorption gas separation system to be less than this characteristic of product gas temperature in the same direction as this characteristic of washing regeneration gas temperature that process produced, improves through the heat transfer and washes regeneration gas temperature and improve pressure swing adsorption gas separation system's desorption effect.
Description
Technical Field
The utility model relates to a pressure swing adsorption gas separation system of desorption effect is improved to no energy consumption.
Background
At present, China has a large number of pressure swing adsorption gas separation systems in the fields of chemical industry, petrifaction, metallurgy, environmental protection and the like for separating and purifying various mixed gases. At present, in patent documents or reported data published at home and abroad, methods for improving the desorption effect of a pressure swing adsorption gas separation system are generally as follows: the method of reducing desorption pressure by vacuumizing or increasing the total amount of flushing regeneration gas to reduce desorption partial pressure needs energy consumption or increases the loss amount of effective gas, thereby increasing the operation cost of the system.
Therefore, designing a pressure swing adsorption gas separation system and a separation method with no energy consumption and improved desorption effect directly utilizes the characteristic that the temperature of the flushing regeneration gas generated by the pressure swing adsorption gas separation system in the sequential process is necessarily lower than the temperature of the product gas to improve the desorption effect of the pressure swing adsorption gas separation system, and becomes a technical problem to be solved by technical personnel in the technical field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the pressure swing adsorption gas separation system has no energy consumption and improved desorption effect, and solves the problem that the desorption effect of the regenerated flushing gas is not ideal in the operation process in the prior art.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a pressure swing adsorption gas separation system of desorption effect is improved to no energy consumption, includes feed gas conveyer pipe, desorption gas defeated outward pipe, product gas defeated outward pipe, regeneration washing gas conveyer pipe, heat exchanger and an at least adsorption tower, feed gas conveyer pipe passes through the pipeline respectively with all the bottom intercommunication of adsorption tower, feed gas conveyer pipe is used for carry the feed gas in the adsorption tower, product gas defeated outward pipe passes through the pipeline respectively with all the top intercommunication of adsorption tower, product gas defeated outward pipe is used for with the product gas defeated outward that separates in the adsorption tower, the one end of regeneration washing gas conveyer pipe is connected with all the top of adsorption tower respectively through the pipeline and is used for drawing out the washing regeneration gas that the process of releasing produced, the other end of regeneration washing gas conveyer pipe passes through the pipeline respectively with all the top intercommunication of adsorption tower, the regeneration flushing gas conveying pipe is used for leading out regeneration gas from a forward discharging process and conveying the led-out regeneration gas to the adsorption tower, the desorption gas outward conveying pipe is respectively communicated with the bottoms of all the adsorption towers through pipelines, the desorption gas outward conveying pipe is used for outward conveying the desorption gas generated in the regeneration process of the adsorption towers, and the heat exchanger is respectively connected with the product gas outward conveying pipe and the regeneration flushing gas conveying pipe and is used for enabling the regeneration flushing gas in the regeneration flushing gas conveying pipe to exchange heat with the product gas in the product gas outward conveying pipe.
And one end of the final-rising pipeline is connected with the product gas outward conveying pipe, and the other end of the final-rising pipeline is respectively communicated with the tops of all the adsorption towers through pipelines.
Furthermore, a program control valve is arranged on a pipeline of the final-rise pipeline, which is respectively connected with each adsorption tower.
Further, the feed gas conveying pipe is respectively provided with each program control valve on a pipeline connected with the adsorption tower, the product gas outward conveying pipe is respectively provided with each program control valve on a pipeline connected with the adsorption tower, the desorption gas outward conveying pipe is respectively provided with each program control valve on a pipeline connected with the adsorption tower, the regeneration flushing gas conveying pipe is respectively provided with each program control valve on a pipeline connected with the adsorption tower, and the regeneration flushing gas conveying pipe is respectively provided with each program control valve on a pipeline connected with each adsorption tower along with the process section.
Furthermore, a pressure gauge is arranged on a pipeline of the product gas outward transmission pipe, which is connected with each adsorption tower.
Furthermore, a regeneration flushing gas buffer tank is arranged on the regeneration flushing gas conveying pipe, and the regeneration flushing gas buffer tank is positioned in front of the heat exchanger in the airflow direction of the regeneration flushing gas in the regeneration flushing gas conveying pipe.
A separation method of a pressure swing adsorption gas separation system with no energy consumption and improved desorption effect comprises the steps that raw material gas enters an adsorption tower from a raw material gas working section through a raw material gas conveying pipe for adsorption separation, separated product gas is conveyed out through a product gas conveying pipe so as to realize gas separation, in the product gas conveying process, regeneration flushing gas is generated by the adsorption tower through sequential release, the regeneration flushing gas enters the adsorption tower through a regeneration flushing gas conveying pipe so as to flush and regenerate the adsorption tower, the regenerated desorption gas in the adsorption tower is conveyed out through a desorption gas conveying pipe, in the process, the regeneration flushing gas in the regeneration flushing gas conveying pipe and the product gas in the product gas conveying pipe generate heat exchange in a heat exchanger so that the temperature of the regeneration flushing gas in the regeneration flushing gas conveying pipe is increased, and extra energy can be provided for desorption of an adsorbent in the process of flushing the adsorbent in the adsorption tower by the regeneration flushing gas, further effectively improving the desorption effect and finally effectively improving the adsorption capacity and efficiency of the pressure swing adsorption gas separation system.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model has the advantages of simple structure and scientific and reasonable design, convenient to use can directly utilize pressure swing adsorption gas separation system to be less than the desorption effect that pressure swing adsorption gas separation system was improved to this characteristic that product gas temperature must be less than in the same direction as putting the process production washing regeneration gas temperature.
The utility model discloses mainly include the feed gas conveyer pipe, desorption gas defeated pipe outward, product gas defeated pipe outward, regeneration flushing gas conveyer pipe, heat exchanger and adsorption tower, the feed gas gets into the adsorption tower through the feed gas conveyer pipe from the feed gas workshop section and adsorbs the separation, the product gas of separation is defeated outward through product gas defeated pipe outward, thereby realize gas separation, when the adsorption tower is regenerated, produce regeneration flushing gas through arranging in the same direction as putting, regeneration flushing gas gets into the adsorption tower through regeneration flushing gas conveyer pipe and washes the regeneration in order to the adsorption tower, be equipped with regeneration flushing gas buffer tank, buffer tank carries out the buffer memory through regeneration flushing gas buffer tank earlier, after rethread heat exchanger and product gas carry out the heat transfer and heat up, get into the adsorption tower and wash the regeneration in order to the adsorption tower, desorption gas through regeneration in the adsorption tower is defeated outward by desorption gas defeated pipe outward.
When the pressure swing adsorption gas separation system is used for desorption, the gas molecules adsorbed by the adsorbent can be separated from the surface of the adsorbent only by acquiring extra kinetic energy, so that the desorption process is completed. Therefore, the temperature of the regeneration flushing gas is increased to provide extra energy for the desorption process, so that the desorption effect is improved, the adsorbent can adsorb more gas molecules in the next adsorption, and the aim of improving the overall adsorption capacity and efficiency of the system is fulfilled finally.
Since the product gas of the pressure swing adsorption gas separation system comes from the adsorption process, the temperature of the product gas can be increased due to the heat release of the adsorption, and the regeneration flushing gas comes from the sequential decompression process, and the temperature of the regeneration flushing gas can be reduced by adiabatic expansion due to decompression. Therefore, the temperature of the regeneration flushing gas is necessarily lower than that of the product gas, and as the regeneration flushing gas conveying pipe and the product gas outward conveying pipe are also respectively connected with the heat exchanger, the regeneration flushing gas in the regeneration flushing gas conveying pipe and the product gas in the product gas outward conveying pipe generate heat exchange. The temperature of the regeneration flushing gas in the regeneration flushing gas conveying pipe can be increased through the heat exchange, so that extra energy can be provided for the desorption process of the adsorbent in the process of flushing the adsorbent by the regeneration flushing gas, the desorption effect is improved, and the aim of improving the adsorption capacity and efficiency of the pressure swing adsorption gas separation system is fulfilled finally.
Drawings
Fig. 1 is a schematic diagram of a system according to the present invention.
Fig. 2 is another schematic diagram of the system of the present invention.
Wherein, the names corresponding to the reference numbers are:
1-raw gas conveying pipe, 2-desorption gas outward conveying pipe, 3-product gas outward conveying pipe, 4-regeneration flushing gas conveying pipe, 5-heat exchanger, 6-adsorption tower, 7-inlet device valve, 8-outlet adsorption tower pressure regulating valve, 9-pressure gauge, 10-final-liter pipeline and 11-regeneration flushing gas buffer tank.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
As shown in figures 1 and 2, the utility model provides a pair of pressure swing adsorption gas separation system that desorption effect was improved to no energy consumption, simple structure, design scientific and reasonable, convenient to use can directly utilize pressure swing adsorption gas separation system to be less than this characteristic that product gas temperature must be less than in the order of this characteristic of putting process production in order to wash the regeneration gas temperature and improve pressure swing adsorption gas separation system's desorption effect. The utility model comprises a raw material gas conveying pipe 1, a desorption gas outer conveying pipe 2, a product gas outer conveying pipe 3, a regeneration flushing gas conveying pipe 4, a heat exchanger 5, a final lifting pipeline 10 and at least one adsorption tower 6, wherein the raw material gas conveying pipe 1 is respectively communicated with the bottoms of all the adsorption towers 6 through pipelines, the raw material gas conveying pipe 1 is used for conveying raw material gas in the adsorption towers 6, the product gas outer conveying pipe 3 is respectively communicated with the tops of all the adsorption towers 6 through pipelines, the other end of the product gas outer conveying pipe is communicated with the heat exchanger 5, the product gas outer conveying pipe 3 is used for conveying the product gas separated in the adsorption towers 6, one end of the regeneration flushing gas conveying pipe 4 is respectively connected with the tops of all the adsorption towers 6 through pipelines, the other end of the regeneration flushing gas conveying pipe is communicated with the heat exchanger 5, the regeneration flushing gas conveying pipe 4 is used for leading out the regeneration gas from the sequential discharge work section and conveying the led out the regeneration gas to the adsorption, the desorption gas outward conveying pipe 2 is respectively communicated with the bottoms of all the adsorption towers 6 through pipelines, the desorption gas outward conveying pipe 2 is used for outward conveying desorption gas generated in the regeneration process of the adsorption towers 6, and the heat exchanger 5 is respectively connected with the product gas outward conveying pipe 3 and the regeneration flushing gas conveying pipe 4 and is used for enabling the regeneration flushing gas in the regeneration flushing gas conveying pipe 4 to exchange heat with the product gas in the product gas outward conveying pipe 3.
The one end that rises pipeline 10 eventually with product gas outer transport pipe 3 is connected, the other end that rises pipeline 10 eventually passes through the pipeline respectively with all the top intercommunication of adsorption tower 6, be equipped with into device valve 7 on the feed gas conveyer pipe 1, be equipped with out adsorption tower pressure regulating valve 8 on the product gas outer transport pipe 3 to on the air current direction of product gas, it is located to go out adsorption tower pressure regulating valve 8 the place ahead of heat exchanger 5, product gas outer transport pipe 3 respectively with each all be equipped with a pressure gauge 9 on the pipeline that adsorption tower 6 is connected.
Feed gas conveying pipe 1 respectively with each all be equipped with a programmable valve on the pipeline that adsorption tower 6 is connected, product gas outer transport pipe 3 respectively with each platform all be equipped with a programmable valve on the pipeline that adsorption tower 6 is connected, desorption gas outer transport pipe 2 respectively with each all be equipped with a programmable valve on the pipeline that adsorption tower 6 is connected, regeneration washing gas conveying pipe 4 respectively with each platform all be equipped with a programmable valve on the pipeline that adsorption tower 6 is connected, regeneration washing gas conveying pipe 4 respectively with each adsorption tower in the same direction as all being equipped with a programmable valve on the pipeline of section connection of putting work, rise pipeline 10 respectively with each finally all be equipped with a programmable valve on the pipeline that adsorption tower 6 is connected.
As shown in fig. 2, be equipped with regeneration washing gas buffer tank 11 on regeneration washing gas conveyer pipe 4 to on the air current direction of regeneration washing gas in regeneration washing gas conveyer pipe, regeneration washing gas buffer tank 11 is located the place ahead of heat exchanger 5.
The utility model discloses mainly include the feed gas conveyer pipe, desorption gas outer transport pipe, product gas outer transport pipe, regeneration flushing gas conveyer pipe, heat exchanger and adsorption tower, the feed gas gets into the adsorption tower through the feed gas conveyer pipe from the feed gas workshop section and adsorbs the separation, the product gas of separation is defeated outward through product gas outer transport pipe, thereby realize gas separation, when the adsorption tower is regenerated, produce regeneration flushing gas through arranging in the same direction as putting, regeneration flushing gas gets into the adsorption tower through regeneration flushing gas conveyer pipe and washes the regeneration in order to rinse the adsorption tower, be equipped with regeneration flushing gas buffer tank, carry out the buffer memory through regeneration flushing gas buffer tank earlier, later after rising temperature through the heat exchanger, get into the adsorption tower and wash the regeneration in order to rinse the adsorption tower, desorption gas through regeneration in the adsorption tower is defeated outward by desorption gas outer transport pipe.
When the pressure swing adsorption gas separation system is used for desorption, the gas molecules adsorbed by the adsorbent can be separated from the surface of the adsorbent only by acquiring extra kinetic energy, so that the desorption process is completed. Therefore, the temperature of the regeneration flushing gas is increased to provide extra energy for the desorption process, so that the desorption effect is improved, the adsorbent can adsorb more gas molecules in the next adsorption, and the aim of improving the overall adsorption capacity and efficiency of the system is fulfilled finally.
Since the product gas of the pressure swing adsorption gas separation system comes from the adsorption process, the temperature of the product gas can be increased due to the heat release of the adsorption, and the regeneration flushing gas comes from the sequential decompression process, and the temperature of the regeneration flushing gas can be reduced by adiabatic expansion due to decompression. Therefore, the temperature of the regeneration flushing gas is necessarily lower than that of the product gas, and as the regeneration flushing gas conveying pipe and the product gas outward conveying pipe are also respectively connected with the heat exchanger, the regeneration flushing gas in the regeneration flushing gas conveying pipe and the product gas in the product gas outward conveying pipe generate heat exchange. The temperature of the regeneration flushing gas in the regeneration flushing gas conveying pipe can be increased through the heat exchange, so that extra energy can be provided for the desorption process of the adsorbent in the process of flushing the adsorbent by the regeneration flushing gas, the desorption effect is improved, and the aim of improving the adsorption capacity and efficiency of the pressure swing adsorption gas separation system is fulfilled finally.
The utility model discloses think about wonderfully, directly utilize pressure swing adsorption gas separation system to be less than the desorption effect that pressure swing adsorption gas separation system was improved to this characteristic that product gas temperature must be less than in the same direction as the regenerated gas temperature that washes that the process produced to improve pressure swing adsorption gas separation system's adsorption efficiency and efficiency, it need not additionally to increase the power consumption, can effectively reduce the running cost of system, has very extensive application prospect, is suitable for and widelys popularize and apply in this technical field.
The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.
Claims (6)
1. The pressure swing adsorption gas separation system is characterized by comprising a raw gas conveying pipe (1), a desorption gas outer conveying pipe (2), a product gas outer conveying pipe (3), a regeneration flushing gas conveying pipe (4), a heat exchanger (5) and at least one adsorption tower (6), wherein the raw gas conveying pipe (1) is respectively communicated with the bottoms of all the adsorption towers (6) through pipelines, the raw gas conveying pipe (1) is used for conveying raw gas into the adsorption towers (6), one end of the product gas outer conveying pipe (3) is respectively communicated with the tops of all the adsorption towers (6) through pipelines, the other end of the product gas outer conveying pipe is communicated with the heat exchanger (5), the product gas outer conveying pipe (3) is used for conveying product gas separated from the interior of the adsorption towers (6), one end of the regeneration flushing gas conveying pipe (4) is respectively connected with the tops of all the adsorption towers (6) through pipelines, the other end of the adsorption tower is communicated with a heat exchanger (5), the regeneration flushing gas conveying pipe (4) is used for leading out the regeneration gas from the forward release working section and conveying the led-out regeneration gas into the adsorption tower, the desorption gas outward conveying pipe (2) is respectively communicated with the bottoms of all the adsorption towers (6) through pipelines, the desorption gas outward conveying pipe (2) is used for outward conveying the desorption gas generated by the adsorption towers (6) in the regeneration process, and the heat exchanger (5) is respectively connected with the product gas outward conveying pipe (3) and the regeneration flushing gas conveying pipe (4) and is used for enabling the regeneration flushing gas in the regeneration flushing gas conveying pipe (4) to exchange heat with the product gas in the product gas outward conveying pipe (3).
2. The system for pressure swing adsorption gas separation with no energy consumption and improved desorption effect according to claim 1, further comprising a final-liter line (10), wherein one end of the final-liter line (10) is connected with the product gas export pipe (3), and the other end of the final-liter line (10) is respectively communicated with the tops of all the adsorption towers (6) through a pipeline.
3. The pressure swing adsorption gas separation system of claim 2 having no energy consumption to improve desorption, wherein: and a program control valve is arranged on a pipeline of the final lifting pipeline (10) which is respectively connected with each adsorption tower (6).
4. The system for pressure swing adsorption gas separation without energy consumption and with improved desorption effect according to claim 1, wherein the feed gas delivery pipe (1) is provided with a programmable valve on the pipeline connected with each adsorption tower (6), the product gas export pipe (3) is provided with a programmable valve on the pipeline connected with each adsorption tower (6), the desorption gas export pipe (2) is provided with a programmable valve on the pipeline connected with each adsorption tower (6), and the regeneration purge gas delivery pipe (4) is provided with a programmable valve on the pipeline connected with each adsorption tower (6).
5. The system for pressure swing adsorption gas separation with improved desorption effect without energy consumption of claim 1, wherein a pressure gauge (9) is provided on the pipeline of the product gas outward pipe (3) connected to each adsorption tower (6).
6. A PSA gas separation system with improved desorption effect without energy consumption according to any of claims 1-5, characterized in that the regeneration purge gas supply line (4) is provided with a regeneration purge gas buffer tank (11), and the regeneration purge gas buffer tank (11) is located in front of the heat exchanger (5) in the flow direction of the regeneration purge gas in the regeneration purge gas supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920870887.8U CN210186773U (en) | 2019-06-11 | 2019-06-11 | Pressure swing adsorption gas separation system without energy consumption and capable of improving desorption effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920870887.8U CN210186773U (en) | 2019-06-11 | 2019-06-11 | Pressure swing adsorption gas separation system without energy consumption and capable of improving desorption effect |
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| CN210186773U true CN210186773U (en) | 2020-03-27 |
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| CN201920870887.8U Withdrawn - After Issue CN210186773U (en) | 2019-06-11 | 2019-06-11 | Pressure swing adsorption gas separation system without energy consumption and capable of improving desorption effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124446A (en) * | 2019-06-11 | 2019-08-16 | 成都益志科技有限责任公司 | The PSA Gas separation system and separation method of Non-energy-consumption improvement desorption effect |
-
2019
- 2019-06-11 CN CN201920870887.8U patent/CN210186773U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124446A (en) * | 2019-06-11 | 2019-08-16 | 成都益志科技有限责任公司 | The PSA Gas separation system and separation method of Non-energy-consumption improvement desorption effect |
| CN110124446B (en) * | 2019-06-11 | 2023-06-06 | 成都益志科技有限责任公司 | Pressure swing adsorption gas separation system and separation method for improving desorption effect without energy consumption |
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