CN210186772U - Pressure swing adsorption gas separation system capable of improving adsorption efficiency without energy consumption - Google Patents
Pressure swing adsorption gas separation system capable of improving adsorption efficiency without energy consumption Download PDFInfo
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- CN210186772U CN210186772U CN201920870063.0U CN201920870063U CN210186772U CN 210186772 U CN210186772 U CN 210186772U CN 201920870063 U CN201920870063 U CN 201920870063U CN 210186772 U CN210186772 U CN 210186772U
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Abstract
The utility model discloses a pressure swing adsorption gas separation system that no energy consumption improves adsorption efficiency solves the problem that prior art adsorption efficiency is low at the operation in-process. The utility model discloses a feed gas conveyer pipe, desorption gas outer transport pipe, product gas outer transport pipe, regeneration flushing gas conveyer pipe, heat exchanger and an at least adsorption tower, feed gas conveyer pipe, desorption gas outer transport pipe, product gas outer transport pipe, regeneration flushing gas conveyer pipe are equallyd divide and do not are connected through pipeline and all adsorption towers, and the heat exchanger is respectively with feed gas conveyer pipe and desorption gas outer transport union coupling for make the feed gas in the feed gas conveyer pipe and desorb the gas of desorption in the gas outer transport pipe carry out the heat transfer. The utility model discloses can directly utilize desorption gas temperature to be less than this characteristic of feed gas temperature certainly among the pressure swing adsorption gas separation system, reduce feed gas temperature through the heat transfer and improve pressure swing adsorption gas separation system's adsorption efficiency.
Description
Technical Field
The utility model relates to a pressure swing adsorption gas separation system that does not have energy consumption and improves adsorption efficiency.
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 adsorption capacity and efficiency of a pressure swing adsorption gas separation system usually increase the pressure of raw material gas or reduce the pressure and partial pressure of desorption gas, and the methods all need energy consumption and increase the operation cost of the system.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to design a pressure swing adsorption gas separation system with no energy consumption and improved adsorption efficiency, which directly utilizes the characteristic that the temperature of the desorbed gas in the pressure swing adsorption gas separation system is necessarily lower than the temperature of the raw material gas to improve the adsorption efficiency of the pressure swing adsorption gas separation system.
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 can improve the adsorption efficiency, and the problem of low adsorption efficiency in the operation process in the prior art is solved.
In order to achieve the above object, the utility model adopts the following technical scheme:
a pressure swing adsorption gas separation system capable of improving adsorption efficiency without energy consumption comprises a raw material gas conveying pipe, a desorption gas outward conveying pipe, product gas outward conveying pipes, a regeneration flushing gas conveying pipe, a heat exchanger and at least one adsorption tower, wherein the raw material gas conveying pipe is respectively communicated with the bottoms of all the adsorption towers through pipelines, the raw material gas conveying pipe is used for conveying raw material gas into the adsorption towers, the product gas outward conveying pipe is respectively communicated with the tops of all the adsorption towers through pipelines, the product gas outward conveying pipe is used for externally conveying product gas separated from the adsorption towers, one end of the regeneration flushing gas conveying pipe is connected with the product gas outward conveying pipe, the other end of the regeneration flushing gas conveying pipe is respectively communicated with the tops of all the adsorption towers through pipelines, the regeneration flushing gas conveying pipe is used for leading out regeneration gas from the product gas outward conveying pipe and conveying the led-out regeneration gas into the adsorption towers, the desorption gas outward conveying pipes are respectively communicated with the bottoms of all the adsorption towers through pipelines, the desorption gas outward conveying pipes are used for outward conveying desorption gas generated in the regeneration process of the adsorption towers, and the heat exchanger is respectively connected with the feed gas conveying pipe and the desorption gas outward conveying pipes and is used for enabling the feed gas in the feed gas conveying pipe to exchange heat with the desorption gas in the desorption gas outward conveying pipes.
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 regeneration flushing gas conveying pipe is respectively provided with each program control valve on a pipeline connected with the adsorption tower, and the desorption gas outward conveying pipe is respectively provided with each program control valve on a pipeline connected with the adsorption tower.
Furthermore, a first valve is arranged on the raw material gas conveying pipe, and the first valve and the heat exchanger are sequentially distributed on the raw material gas conveying pipe along the direction of the air flow.
Further, a second valve is arranged on the product gas outward conveying pipe, and in the gas flow direction of the product gas, the second valve is positioned behind the joint of the regeneration flushing gas conveying pipe and the product gas outward conveying pipe.
Furthermore, a pressure gauge is arranged on a pipeline of the product gas outward transmission pipe, which is connected with each adsorption tower.
Further, the desorption pressure of each adsorption tower during regeneration desorption is higher than 0.005 MPa.G.
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 desorption gas temperature to be less than this characteristic of feed gas temperature certainly among the pressure swing adsorption gas separation system, improves pressure swing adsorption gas separation system's adsorption efficiency through reducing the feed gas temperature.
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 from the feed gas workshop section through the feed gas conveyer pipe and adsorbs the separation, the product gas of isolating is defeated outward through product gas outer transport pipe, in-process defeated outward at the product gas, regeneration flushing gas conveyer pipe separation part product gas is decompressed for regeneration flushing gas gets into the adsorption tower in order to wash the regeneration to the adsorption tower in the same direction as releasing, desorption gas after regeneration is defeated outward by desorption gas outer transport pipe, in-process, still be connected with the heat exchanger respectively because of desorption gas outer transport pipe and feed gas conveyer pipe, then, desorption gas in the desorption gas outer transport pipe and the feed gas in the feed gas conveyer pipe produce the heat exchange, thereby reduce the feed gas temperature.
When the pressure swing adsorption gas separation system is used for desorption, gas molecules are separated from the adsorbent to generate phase state change, so that a temperature reduction effect is generated, and meanwhile, the desorption process is a pressure reduction process, so that the desorbed gas also has an adiabatic expansion temperature reduction effect, the temperature of the desorbed gas of the pressure swing adsorption gas separation device is lower than that of the feed gas, and the gas temperature difference is generally 3-10 degrees. The characteristic that the temperature of the desorbed gas of the pressure swing adsorption gas separation system is always lower than that of the feed gas is utilized, and the temperature of the feed gas is reduced through the heat exchange, so that the molecular kinetic energy of the feed gas is reduced, and the adsorption capacity and efficiency of the adsorbent in the pressure swing adsorption gas separation system on gas components are improved.
The utility model discloses at the initial stage, the gas temperature difference of desorption gas temperature and feed gas temperature is 3-10, but along with the continuous operation of system, the feed gas is with desorption gas heat transfer back, its temperature that gets into the adsorption tower will be than the temperature of initial stage feed gas low, then the temperature of desorption gas that the later stage was come out also can be lower than the temperature of initial stage desorption gas, can form the virtuous circle that the feed gas temperature is lower and lower, can make finally that the absorbent is more and more high to the adsorption capacity and the efficiency of gas component among the pressure swing adsorption gas separation system, until invariable on a higher horizontal line.
Drawings
Fig. 1 is a 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-first valve, 8-second valve and 9-pressure meter.
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 figure 1, the utility model provides a pair of no energy consumption improves pressure swing adsorption gas separation system of adsorption efficiency, simple structure, design scientific and reasonable, convenient to use can directly utilize in the pressure swing adsorption gas separation system desorption gas temperature must be less than this characteristic of feed gas temperature and improve pressure swing adsorption gas separation system's adsorption efficiency. 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 and at least one adsorption tower 6, the raw material gas conveying pipe 1 is respectively communicated with all the bottoms of 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 all the tops of the adsorption towers 6 through pipelines, 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 connected with the product gas outer conveying pipe 3, the other end of the regeneration flushing gas conveying pipe 4 is respectively communicated with all the tops of the adsorption towers 6 through pipelines, the regeneration flushing gas conveying pipe 4 is used for leading out regeneration gas from the product gas outer conveying pipe 3 and conveying the led out regeneration gas to the adsorption towers, 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, the heat exchanger 5 is respectively connected with the raw material gas conveying pipe 1 and the desorption gas outward conveying pipe 2 and is used for enabling the raw material gas in the raw material gas conveying pipe 1 to exchange heat with the desorption gas in the desorption gas outward conveying pipe 2, and the desorption pressure of each adsorption tower 6 during regeneration desorption is higher than 0.005 MPa.G.
Feed gas conveyer pipe 1 respectively with each all be equipped with a programmable valve on the pipeline that adsorption tower 6 is connected, product gas defeated outward pipe 3 respectively with each all be equipped with a programmable valve on the pipeline that adsorption tower 6 is connected, regeneration washing gas conveyer pipe 4 respectively with each all be equipped with a programmable valve on the pipeline that adsorption tower 6 is connected, desorption gas defeated outward pipe 2 respectively with each all be equipped with a programmable valve on the pipeline that adsorption tower 6 is connected.
The feed gas conveying pipe 1 is provided with a first valve 7, and the first valve 7 and the heat exchanger 5 are sequentially distributed along the gas flow direction on the feed gas conveying pipe 1. The product gas outward conveying pipe 3 is provided with a second valve 8, and the second valve 8 is positioned behind the joint of the regeneration flushing gas conveying pipe 4 and the product gas outward conveying pipe 3 in the gas flow direction of the product gas. And the product gas outward transmission pipe 3 is respectively provided with a pressure gauge 9 on a pipeline connected with each adsorption tower 6.
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 from the feed gas workshop section through the feed gas conveyer pipe and adsorbs the separation, the product gas of isolating is defeated outward through product gas outer transport pipe, in-process defeated outward at the product gas, regeneration flushing gas conveyer pipe separation part product gas gets into the adsorption tower in order to wash the regeneration to the adsorption tower as regeneration flushing gas, desorption gas after regeneration is defeated outward by desorption gas outer transport pipe, in-process, still be connected with the heat exchanger respectively because of desorption gas outer transport pipe and feed gas conveyer pipe, then, desorption gas in the desorption gas outer transport pipe and the feed gas in the feed gas conveyer pipe produce the heat exchange, thereby reduce the feed gas temperature.
When the pressure swing adsorption gas separation system is used for desorption, gas molecules are separated from the adsorbent to generate phase state change, so that a temperature reduction effect is generated, and meanwhile, the desorption process is a pressure reduction process, so that the desorbed gas also has an adiabatic expansion temperature reduction effect, the temperature of the desorbed gas of the pressure swing adsorption gas separation device is lower than that of the feed gas, and the gas temperature difference is generally 3-10 degrees. The characteristic that the temperature of the desorbed gas of the pressure swing adsorption gas separation system is always lower than that of the feed gas is utilized, and the temperature of the feed gas is reduced through the heat exchange, so that the molecular kinetic energy of the feed gas is reduced, and the adsorption capacity and efficiency of the adsorbent in the pressure swing adsorption gas separation system on gas components are improved.
The utility model discloses at the initial stage, the gas temperature difference of desorption gas temperature and feed gas temperature is 3-10, but along with the continuous operation of system, the feed gas is with desorption gas heat transfer back, its temperature that gets into the adsorption tower will be than the temperature of initial stage feed gas low, then the temperature of desorption gas that the later stage was come out also can be lower than the temperature of initial stage desorption gas, can form the virtuous circle that the feed gas temperature is lower and lower, can make finally that the absorbent is more and more high to the adsorption capacity and the efficiency of gas component among the pressure swing adsorption gas separation system, until invariable on a higher horizontal line.
The utility model is suitable for a pressure swing adsorption gas separation system that desorption pressure is higher than 0.005MPa.G draws forth through the desorption gas with pressure swing adsorption gas separation system exhaust in desorption stage, carry out the heat transfer with relative high pressure, the feed gas of high temperature, utilize pressure swing adsorption gas separation system desorption gas temperature always to be less than the characteristic of feed gas, make the temperature of feed gas reduce through this kind of heat transfer, thereby reduce the molecular kinetic energy of feed gas, improve the adsorption capacity and the efficiency of adsorbent to gas component among the pressure swing adsorption gas separation system.
The utility model discloses think about wonderfully, directly utilize in the pressure swing adsorption gas separation system desorption gas temperature must be less than this characteristic of feed gas temperature to improve pressure swing adsorption gas separation system's adsorption efficiency, it need not additionally to increase the power consumption, can effectively reduce system's running cost, 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 utility model provides a pressure swing adsorption gas separation system that non-energy consumption improves adsorption efficiency which characterized in that: 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) 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 product gas outer conveying pipe (3) is used for conveying the product gas separated in the adsorption towers (6) outwards, one end of the regeneration flushing gas conveying pipe (4) is connected with the product gas outer conveying pipe (3), the other end of the regeneration flushing gas conveying pipe (4) is respectively communicated with the tops of all the adsorption towers (6) through pipelines, the regeneration flushing gas conveying pipe (4) is used for leading out regeneration gas from the product gas outward conveying pipe (3) and conveying the led-out regeneration gas to an 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 in the regeneration process of the adsorption towers (6), and the heat exchanger (5) is respectively connected with the raw gas conveying pipe (1) and the desorption gas outward conveying pipe (2) and is used for enabling the raw gas in the raw gas conveying pipe (1) to exchange heat with the desorption gas in the desorption gas outward conveying pipe (2).
2. The pressure swing adsorption gas separation system of claim 1 having no energy consumption to increase adsorption efficiency, wherein: feed gas conveyer pipe (1) respectively with each all be equipped with a programmable valve on the pipeline that adsorption tower (6) are connected, product gas defeated outward pipe (3) respectively with each all be equipped with a programmable valve on the pipeline that adsorption tower (6) are connected, regeneration flushing gas conveyer pipe (4) respectively with each all be equipped with a programmable valve on the pipeline that adsorption tower (6) are connected, desorption gas defeated outward pipe (2) respectively with each all be equipped with a programmable valve on the pipeline that adsorption tower (6) are connected.
3. The pressure swing adsorption gas separation system of claim 1 having no energy consumption to increase adsorption efficiency, wherein: the feed gas conveying pipe (1) is provided with a first valve (7), and the first valve (7) and the heat exchanger (5) are sequentially distributed along the air flow direction on the feed gas conveying pipe (1).
4. The pressure swing adsorption gas separation system of claim 1 having no energy consumption to increase adsorption efficiency, wherein: and a second valve (8) is arranged on the product gas outward transmission pipe (3), and in the airflow direction of the product gas, the second valve (8) is positioned behind the joint of the regeneration flushing gas transmission pipe (4) and the product gas outward transmission pipe (3).
5. The pressure swing adsorption gas separation system of claim 1 having no energy consumption to increase adsorption efficiency, wherein: and the product gas outward transmission pipe (3) is respectively provided with a pressure gauge (9) on a pipeline connected with each adsorption tower (6).
6. The pressure swing adsorption gas separation system with improved adsorption efficiency without power consumption of any one of claims 1 to 5, wherein: the desorption pressure of each adsorption tower (6) in regeneration desorption is higher than 0.005 MPa.G.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124447A (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 raising adsorption efficiency |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124447A (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 raising adsorption efficiency |
| CN110124447B (en) * | 2019-06-11 | 2023-10-27 | 成都益志科技有限责任公司 | Pressure swing adsorption gas separation system and separation method for improving adsorption efficiency without energy consumption |
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