CN213160114U - Pressure swing adsorption forward and backward discharging system - Google Patents

Pressure swing adsorption forward and backward discharging system Download PDF

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CN213160114U
CN213160114U CN202021127238.8U CN202021127238U CN213160114U CN 213160114 U CN213160114 U CN 213160114U CN 202021127238 U CN202021127238 U CN 202021127238U CN 213160114 U CN213160114 U CN 213160114U
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pipeline
gas
passage
program control
reverse
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李忠俐
李可根
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CHENGDU COTTERATION TECH Co
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CHENGDU COTTERATION TECH Co
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Abstract

The utility model discloses a pressure swing adsorption forward and backward discharging system, which comprises a raw material gas buffer tank, a forward and backward discharging buffer tank, a plurality of groups of adsorption towers, a plurality of groups of regulating valves, a program control valve and a gas pipeline; the gas inlet ends of the adsorption towers are connected through gas inlet connecting passages, and the gas outlet ends of the adsorption towers are connected through gas outlet connecting passages; the gas inlet end of the adsorption tower is connected with the raw material buffer tank through a gas inlet connecting passage; the gas outlet end of the adsorption tower is connected with the forward and backward discharge buffer tank through a forward discharge passage; the gas inlet end of the adsorption tower is connected with the forward and reverse discharging buffer tank through a reverse discharging passage; a pressure equalizing passage is arranged between the pressure equalizing passage and the adsorption tower; the utility model has the advantages that: the recovery of low-pressure gas in the tower after pressure equalization is realized through the mutual coordination of all accessories in the system, the purity of product gas is not influenced, and the gas in the tower is fully recovered while the product is high in purity; and the product gas is efficiently collected by matching each system with each passage.

Description

Pressure swing adsorption forward and backward discharging system
Technical Field
The utility model relates to a gas purification technology field specifically is a system is put in same direction as contrary to pressure swing adsorption.
Background
Pressure swing adsorption technology is a very large technology used in the gas purification industry in the last decade, and is widely used in the field of gas purification due to the characteristics of low energy consumption, safety, environmental protection, simple operation, high automation degree and the like. The basic principle is that the adsorbent is regenerated by utilizing the selectivity of the adsorbent to different adsorbates and the characteristic that the adsorption capacity of the adsorbent to the adsorbates is different along with the pressure change, and adsorbing impurity components in raw materials under high pressure and desorbing the impurities under low pressure. The whole operation process is carried out at ambient temperature.
The basic working steps of pressure swing adsorption are divided into two steps of adsorption and regeneration. The regeneration comprises the following three steps:
1. the pressure of the adsorption tower is reduced to low pressure
The method comprises the following steps of firstly carrying out pressure equalization for several times along the adsorption direction (from bottom to top) with other adsorption towers needing pressure increase, gradually reducing the pressure, reducing the pressure of the high-pressure adsorption tower when pressure equalization is carried out, increasing the pressure of the low-pressure adsorption tower, enabling the adsorbent in the low-pressure adsorption tower to be in an adsorption state at the moment, recovering product gas in the high-pressure adsorption tower by the low-pressure adsorption tower, carrying out reverse pressure release when the pressure equalization is finished, desorbing part of adsorbed impurities from the adsorbent when the reverse pressure release is carried out, and simultaneously discharging gas among adsorbent particles out of the adsorption tower, so that in the reverse pressure release process, discharging useful gas among the adsorbent particles when the pressure is higher at the early stage is relative to the whole device.
2. The adsorbent is flushed by pure gas under low pressure to remove impurities remained in the adsorbent or a vacuumizing mode is adopted to reduce the partial pressure of impurity components among the adsorbents, so that the aim of discharging more impurity gases in the adsorbent is fulfilled.
3. The adsorption column is raised to the adsorption pressure in preparation for re-separation of the feed gas.
At present, two desorption methods are mainly adopted for purifying gas by pressure swing adsorption: the first is a normal pressure desorption process, which consists of the steps of adsorption, pressure equalization, forward release, reverse release, pressure equalization and final flushing; and the second is a vacuum pumping process, which comprises the steps of adsorption, pressure equalization, reverse discharge, vacuum pumping, pressure equalization and final filling. The two desorption methods are both used for reducing the partial pressure of the content of impurities among the adsorbents and facilitating the desorption of the content of the impurities in the adsorbents, and after the two desorption methods are generally used, the adsorbents are regenerated thoroughly and can be adsorbed in the next cycle period.
The defects of the prior art are that after pressure equalization is carried out for several times, the pressure of residual gas in the tower is still higher, at the moment, the gas enters a reverse release process, the gas in the tower is released from the bottom of the tower, an adsorbent is desorbed, product gas between impurity gas and the adsorbent is released in a reverse release manner and then is discharged to the air or enters a fuel system, the gas loss is large, and the pressure swing adsorption yield is low; in the prior art, a sequential discharge flow is adopted, the residual gas is discharged from the top of the tower sequentially, and the other tower is washed to reduce the reverse discharge pressure, but in the sequential discharge process, the desorption process of the adsorbent is also performed, so that the impurity gas is released and easily penetrates through the upper adsorbent, and the purity of the product gas is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a pressure swing adsorption is in the same direction as putting the system, accomplish in the adsorption tower voltage-sharing, when should going on putting in the contrary, release gas from the adsorption tower top and tower bottom simultaneously, impurity gas releases from both sides about the adsorption tower simultaneously, and impurity is difficult to pierce through upper adsorbent, in the recovery tower internal gas, can guarantee product gas quality to reach the high-efficient mesh of collecting high-purity product gas.
The purpose of the utility model is realized through the following technical scheme:
a pressure swing adsorption forward and backward discharging system comprises a raw material gas buffer tank, a forward and backward discharging buffer tank, a plurality of groups of adsorption towers, a plurality of groups of regulating valves, a plurality of groups of program control valves and a plurality of groups of gas pipelines;
the gas inlet ends of the adsorption towers are connected through gas inlet connecting passages, and the gas outlet ends of the adsorption towers are connected through gas outlet connecting passages; the raw material gas buffer tank is used for feeding gas through a first pipeline and is connected with the adsorption tower through the gas feeding connecting passage; the gas outlet ends of the adsorption towers are connected through a pressure equalizing passage; the air outlet end of the adsorption tower is connected with the forward and backward buffer tank through a forward and backward passage; the air inlet end of the adsorption tower is connected with the forward and reverse buffer tank through a reverse discharge passage;
the air inlet end of the adsorption tower is connected with a vacuum pump set through a vacuum passage;
the forward and backward discharging passage and the backward discharging passage form a forward and backward discharging system.
In order to further realize the purposes of efficient collection and high-purity product gas, the gas inlet connecting passage sequentially comprises a second pipeline, a third pipeline, a first program control valve and an eleventh pipeline according to the gas flowing direction;
the gas outlet connecting passage comprises a fourth pipeline, a second program control valve, a fifth pipeline and a first regulating valve in sequence according to the gas flowing direction;
the pressure equalizing passage comprises a fourth pipeline, a ninth pipeline, a fifth program control valve, an eighth pipeline and a fourth program control valve in sequence according to the gas flowing direction;
the forward release passage comprises a fourth pipeline, a second program control valve and a fifth pipeline in sequence according to the gas flowing direction;
the reverse discharge passage comprises an eleventh pipeline, a sixth program control valve, a sixth pipeline, a twelfth pipeline and a thirteenth pipeline in sequence according to the gas flowing direction;
the vacuum passage comprises an eleventh pipeline, a seventh program control valve and a fourteenth pipeline in sequence according to the gas flowing direction;
the ninth pipeline is connected with the eighth pipeline through a third regulating valve;
the fifth pipeline is connected with a tenth pipeline through a final filling passage; the final charging passage comprises a seventh pipeline and a third program control valve in sequence according to the gas flowing direction;
the seventh pipeline is connected with the fifth pipeline through a second regulating valve; a reverse air-bleeding out-of-bounds area passage is arranged between the air inlet connecting passage and the vacuum passage, and comprises a sixth program control valve and a sixth pipeline in sequence according to the gas flow direction; the gas purification device comprises a gas outlet connecting passage, a gas inlet connecting passage, a pressure equalizing passage, a forward discharging passage, a reverse discharging passage, a vacuum passage, a final charging passage and a reverse discharging gas outlet area passage, and a third regulating valve, a seventh pipeline and a second regulating valve are arranged between a ninth pipeline and an eighth pipeline, so that the processes of adsorption, pressure equalizing, forward and reverse discharging, vacuumizing, pre-boosting, pressure equalizing and final charging are realized by utilizing a plurality of groups of program control valves, pipelines, the second regulating valve and the third regulating valve.
In order to further realize the whole process of pressure swing adsorption, the forward and reverse discharge buffer tank, the eighth program control valve, the tenth pipeline, the eighth pipeline, the fourth program control valve, the fourth pipeline and the gas outlet end of the adsorption tower form a forward and reverse discharge system;
the fourth pipeline, the second program control valve, the fifth program control valve, the second regulating valve, the seventh pipeline and the third program control valve form a final charging and primary pressure equalizing system;
the fourth pipeline, the fourth program control valve, the eighth pipeline, the third regulating valve, the ninth pipeline and the fifth program control valve form a last pressure equalizing system; the last pressure equalizing system realizes the coordination work of a plurality of pressure equalizing systems by opening and closing the programmable valves, and comprises a second pressure equalizing system and a third pressure equalizing system, wherein N is more than or equal to 2;
the eleventh pipeline, the sixth program control valve, the sixth pipeline, the tenth program control valve, the twelfth pipeline and the thirteenth pipeline form a reverse discharge system; utilize in the same direction as putting between each passageway of system, the system of filling, voltage-sharing system, the system cooperation of putting against the contrary, form each area that is correlated with each other but independent, realize the high-efficient work in different areas, simultaneously in the absorption stage, carry out the switching of route and system through program control valve and governing valve, can guarantee the singleness of gas stroke to the purpose of product gas is collected to the high efficiency has been realized.
In order to further realize the purpose of efficient collection, the tail end of the fifth pipeline is connected with a pressure transmitter and a first regulating valve according to the gas flowing direction, so as to realize the discharge of product gas; the pressure transmitter is adapted to product gas with different pressures, and the first regulating valve controls the gas flow and the opening and closing of the gas outlet end of the whole system, so that the product gas is rapidly collected.
The utility model has the advantages that:
1. through raw materials gas buffer tank, in the same direction as contrary put buffer tank, the multiunit adsorption tower, the multiunit governing valve, mutually support between multiunit program controlled valve and the multiunit gas pipeline, governing valve and program controlled valve and in the same direction as contrary put buffer tank, form each route between the adsorption tower, thereby distinguish holistic different functional areas, and carry out vacuum operation with the vacuum pump package, thereby realize the absorption of integrated device, the pressure equalization drop, in the same direction as contrary put, put against, the evacuation, boost in advance, the pressure equalization rises, the flow of filling eventually, thereby utilize the fast switch-over between the different routes, realize the recovery of low pressure gas in the pressure equalization rear tower in the adsorption tower, do not influence product gas purity simultaneously, reached under the circumstances of guaranteeing product gas purity, retrieve the tower internal gas as far as possible, realize the purpose of high-efficient collection.
2. By utilizing the air outlet connecting passage, the air inlet connecting passage, the pressure equalizing passage, the forward discharging passage, the reverse discharging passage, the vacuum passage, the final charging passage and the reverse air discharging out-of-bound area passage, meanwhile, a third regulating valve is arranged between the ninth pipeline and the eighth pipeline, a second regulating valve is arranged between the seventh pipeline and the fifth pipeline, thereby realizing the processes of adsorption, pressure equalizing, forward and backward discharging, vacuumizing, pre-boosting, pressure equalizing and final charging by utilizing a plurality of groups of program control valves, pipelines, regulating valves and regulating valves, thereby fully absorbing the impurity gas in the raw material gas, realizing sectional absorption in the same system, simultaneously adopting a forward discharge passage, ensuring that the adsorbent in the tower is not easy to be penetrated by the impurities, the pre-boosting can fully recover the gas in the forward and reverse buffer tanks, and the recovery rate of the product gas is improved, so that the aims of high-efficiency absorption and high purity are fulfilled.
3. Utilize the voltage-sharing system, put system, fill system, cooperation end between each route in the same direction as the contrary system of putting, form each area that is correlated with each other but independent, realize different regional high-efficient work, simultaneously in the adsorption phase to programme-controlled valve and governing valve carry out the switching of route and system, can guarantee the singleness of gas stroke, thereby realized the purpose of high-efficient collection product gas.
4. The pressure transmitter is adapted to product gases with different pressures, and the regulating valve controls the gas flow and the opening and closing of the gas outlet end of the whole system, so that the product gas is rapidly collected.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic flow chart of the present invention;
in the figure, 1-a first pipeline, 2-a second pipeline, 3-a third pipeline, 4-a fourth pipeline, 5-a fifth pipeline, 6-a sixth pipeline, 7-a seventh pipeline, 8-an eighth pipeline, 9-a ninth pipeline, 10-a tenth pipeline, 11-an eleventh pipeline, 12-a twelfth pipeline, 13-a thirteenth pipeline, 14-a fourteenth pipeline, T101-an adsorption tower, V101-a raw material gas buffer tank, V102-a forward and reverse buffer tank, F1-a first program control valve, F2-a second program control valve, F3-a third program control valve, F4-a fourth program control valve, F5-a fifth program control valve, F6-a sixth program control valve, F7-a seventh program control valve, F8-an eighth program control valve, T1-a first regulating valve, T2-a second regulating valve, t3-third regulating valve, N1-gas inlet end, N2-gas outlet end, P1-pressure transmitter, and S1-adsorbent.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in FIG. 1, a pressure swing adsorption forward and backward discharging system comprises a raw material gas buffer tank V101, a forward and backward discharging buffer tank V102, a plurality of groups of adsorption towers T101, a plurality of groups of regulating valves T1-3, a plurality of groups of program control valves F1-8 and a plurality of groups of gas pipelines 1-14;
the gas inlet ends N1 of the adsorption tower T101 are connected through a gas inlet connecting passage, and the gas outlet ends N2 of the adsorption tower T101 are connected through a gas outlet connecting passage; the raw material gas buffer tank V101 is used for feeding gas through a first pipeline 1 and is connected with the adsorption tower T101 through the gas feeding connecting passage; the gas outlet end N2 of the adsorption tower T101 is connected through a pressure equalizing passage; the gas outlet end N2 of the adsorption tower T101 is connected with the forward and reverse buffer tank V102 through a forward and reverse passage; the gas inlet end N1 of the adsorption tower T101 is connected with the forward and reverse buffer tank V102 through a reverse discharge passage;
the air inlet end N1 of the adsorption tower T101 is connected with a vacuum pump set 15 through a vacuum passage;
the forward and backward discharging passage and the backward discharging passage form a forward and backward discharging system.
For the purpose of further realizing efficient collection and high-purity product gas, the gas inlet connecting passage sequentially comprises a second pipeline 2, a third pipeline 3, a first program control valve F1 and an eleventh pipeline 11 according to the gas flowing direction;
the gas outlet connecting passage sequentially comprises a fourth pipeline 4, a second program control valve F2, a fifth pipeline 5 and a first regulating valve T1 according to the gas flowing direction;
the pressure equalizing passage comprises a fourth pipeline 4, a ninth pipeline 9, a fifth program control valve F5, an eighth pipeline 8 and a fourth program control valve F4 in sequence according to the gas flowing direction;
the forward release passage comprises a fourth pipeline 4, a second program control valve F2 and a fifth pipeline 5 in sequence according to the gas flowing direction;
the reverse discharge passage comprises an eleventh pipeline 11, a sixth program control valve F6, a sixth pipeline 6, a twelfth pipeline 12 and a thirteenth pipeline 13 in sequence according to the gas flowing direction;
the vacuum passage comprises an eleventh pipeline 11, a seventh program control valve F7 and a fourteenth pipeline 14 in sequence according to the gas flow direction;
the ninth pipeline 9 and the eighth pipeline 8 are connected through a third regulating valve T3;
the fifth pipeline 5 is connected with a tenth pipeline 10 through a final filling passage; the final charging passage comprises a seventh pipeline 7 and a third program control valve F3 in sequence according to the gas flowing direction;
the seventh pipeline 7 is connected with the fifth pipeline 5 through a second regulating valve T2; a reverse air discharging out-of-bounds area passage is arranged between the air inlet connecting passage and the vacuum passage, and comprises a sixth program control valve F6 and a sixth pipeline 6 in sequence according to the air flowing direction; the process comprises the steps of utilizing an air inlet connecting passage, an air outlet connecting passage, a pressure equalizing passage, a forward discharging passage, a reverse discharging passage, a vacuum passage, a final charging passage and a reverse discharging air out-of-bound region passage, and meanwhile, arranging a third regulating valve T3 between a ninth pipeline 9 and an eighth pipeline 8, arranging a second regulating valve T2 between a seventh pipeline 7 and the fifth pipeline 5, so that the processes of adsorption, pressure equalizing, forward and reverse discharging, vacuumizing, pre-boosting, pressure equalizing and final charging are realized by utilizing a plurality of groups of program control valves, pipelines, a second regulating valve T2 and a third regulating valve T3, impurities in raw material gas are fully absorbed, segmented absorption is realized in the same system, the recovery rate of product gas is improved, and the purposes of high-efficiency absorption and high purity are achieved.
In order to further realize the whole pressure swing adsorption process, the forward and reverse releasing buffer tank V102, the eighth program control valve F8, the tenth pipeline 10, the eighth pipeline 8, the fourth program control valve F4, the fourth pipeline 4 and the gas outlet end N2 of the adsorption tower T101 form the forward and reverse releasing system;
the fourth pipeline 4, the second programmable valve F2, the fifth programmable valve F5, the second regulating valve T2, the seventh pipeline 7 and the third programmable valve F3 form a final charging and primary pressure equalizing system;
the fourth pipeline 4, the fourth programmable valve F4, the eighth pipeline 8, the third regulating valve T3, the ninth pipeline 9 and the fifth programmable valve F5 form a last pressure equalizing system; the last pressure equalizing system realizes the coordination work of a plurality of pressure equalizing systems by opening and closing the programmable valves, and comprises a second pressure equalizing system and a third pressure equalizing system, wherein N is more than or equal to 2;
the eleventh pipeline 11, the sixth programmable valve F6, the sixth pipeline 6, the tenth programmable valve F10, the twelfth pipeline 12 and the thirteenth pipeline 13 form a reverse discharge system; utilize in the same direction as putting between each passageway of system, the system of filling, voltage-sharing system, the system cooperation of putting against the contrary, form each area that is correlated with each other but independent, realize the high-efficient work in different areas, simultaneously in the absorption stage, carry out the switching of route and system through program control valve and governing valve, can guarantee the singleness of gas stroke to the purpose of product gas is collected to the high efficiency has been realized.
In order to further realize the purpose of efficient collection, the tail end of the fifth pipeline is connected with a pressure transmitter and a first regulating valve according to the gas flowing direction, so as to realize the discharge of product gas; the pressure transmitter is adapted to product gas with different pressures, and the first regulating valve controls the gas flow and the opening and closing of the gas outlet end of the whole system, so that the product gas is rapidly collected.
The working principle or process is as follows: as shown in FIG. 1 and FIG. 2, the hydrogen production rate is 300N m3The pressure swing adsorption hydrogen process of h is taken as an example, the purity of hydrogen in raw material gas is 75%, the operation pressure is 1.1Mpa, the device is composed of five adsorption towers, the example is only explained by taking the first adsorption tower T101 as an example, after the raw material gas containing hydrogen enters the device through the first pipeline 1, the raw material gas passes through a raw material gas buffer tank V101 and then enters an adsorption tower T101 from bottom to top through a second pipeline 2, a third pipeline 3, a first program control valve F1 and an eleventh pipeline 11 of an air inlet connecting passage from an air inlet end N1 at the bottom of the adsorption tower T101, the impurity gases mainly comprise water vapor, carbon dioxide, carbon monoxide and methane, are adsorbed by an adsorbent S1 filled in the tower, and unadsorbed hydrogen passes through a fourth pipeline 4, a second program control valve F2, a fifth pipeline 5 and a first regulating valve T1 of an air outlet connecting passage from the top of the tower and is sent out of a battery compartment as product hydrogen through a pressure transmitter P1; when the adsorbent S1 is adsorbed and saturated, closing a first program control valve F1 on a third pipeline 3 of an air inlet connecting passage connected with an air inlet end of the adsorption tower, opening a seventh pipeline 7 and a third program control valve F3 of a final filling passage, and opening an eighth pipeline 8 and a fourth program control valve F4 of a pressure equalizing passage to carry out pressure equalizing for multiple times, when the pressure in the tower is still high, storing gas in a forward and reverse release buffer tank V102 by using a forward and reverse release system, when the pressure in the adsorption tower is reduced to be lower, allowing residual gas in the tower to pass through the sixth program control valve F6 on a sixth pipeline 6 of a reverse release passage and the tenth program control valve F10 on a thirteenth pipeline 13 to be reversely released to the atmosphere or be used as fuel, and when the pressure in the reverse release direction is normal pressure, opening an eleventh pipeline of a vacuum passageThe seventh program control valve F7 on 11 vacuumizes the adsorption tower T101, the impurity gas in the adsorbent S1 is desorbed, the adsorbent is thoroughly regenerated, after the adsorption tower T101 is vacuumized, the gas in the forward and reverse slow tank V102 enters the adsorption tower from the tower bottom gas inlet end N1 of the adsorption tower T101 through the ninth program control valve F9, the sixth pipeline 6, the sixth program control valve F6 and the eleventh pipeline 11, pre-pressure boosting is performed on the tower, the adsorption tower enters the next adsorption procedure, and the operation of the whole process can be controlled through a PLC or DCS automatic control system with high automation degree.
Adsorb through above-mentioned device, the voltage-sharing, in the same direction as putting, put inversely, evacuation, boost pressure in advance, fill these several steps eventually, the hydrogen purity that obtains reaches 99.999%, and gaseous water content is less than 10PPm, and carbon monoxide content is less than 3PPm, has proved the utility model discloses an superiority.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (6)

1. The utility model provides a system is put in same direction as contrary in pressure swing adsorption which characterized in that: comprises a raw material gas buffer tank (V101), a forward and reverse buffer tank (V102), a plurality of groups of adsorption towers (T101), a plurality of groups of regulating valves (T1-3), a plurality of groups of program control valves (F1-8) and a plurality of groups of gas pipelines (1-14);
the gas inlet ends (N1) of the adsorption tower (T101) are connected through a gas inlet connecting passage, and the gas outlet ends (N2) of the adsorption tower (T101) are connected through a gas outlet connecting passage; the raw material gas buffer tank (V101) is used for feeding gas through a first pipeline (1) and is connected with the adsorption tower (T101) through the gas feeding connecting passage; the gas outlet end (N2) of the adsorption tower (T101) is connected through a pressure equalizing passage; the gas outlet end (N2) of the adsorption tower (T101) is connected with the forward and backward buffer tank (V102) through a forward and backward passage; the gas inlet end (N1) of the adsorption tower (T101) is connected with the forward and reverse buffer tank (V102) through a reverse discharge passage;
the air inlet end (N1) of the adsorption tower (T101) is connected with a vacuum pump set (15) through a vacuum passage;
the forward and backward discharging passage and the backward discharging passage form a forward and backward discharging system.
2. The pressure swing adsorption forward and reverse discharging system as claimed in claim 1, wherein: the gas inlet connecting passage comprises a second pipeline (2), a third pipeline (3), a first program control valve (F1) and an eleventh pipeline (11) in sequence according to the gas flowing direction;
the gas outlet connecting passage comprises a fourth pipeline (4), a second program control valve (F2), a fifth pipeline (5) and a first regulating valve (T1) in sequence according to the gas flowing direction;
the pressure equalizing passage comprises a fourth pipeline (4), a ninth pipeline (9), a fifth program control valve (F5), an eighth pipeline (8) and a fourth program control valve (F4) in sequence according to the gas flowing direction;
the forward release passage comprises a fourth pipeline (4), a second program control valve (F2) and a fifth pipeline (5) in sequence according to the gas flowing direction;
the reverse discharge passage comprises an eleventh pipeline (11), a sixth program control valve (F6), a sixth pipeline (6), a twelfth pipeline (12) and a thirteenth pipeline (13) in sequence according to the gas flow direction;
the vacuum passage comprises an eleventh pipeline (11), a seventh program control valve (F7) and a fourteenth pipeline (14) in sequence according to the gas flow direction.
3. The pressure swing adsorption forward and reverse bleeding system as claimed in claim 2, wherein: the ninth pipeline (9) and the eighth pipeline (8) are connected through a third regulating valve (T3);
the fifth pipeline (5) is connected with a tenth pipeline (10) through a final filling passage; the final charging passage comprises a seventh pipeline (7) and a third program control valve (F3) in sequence according to the gas flowing direction;
the seventh pipeline (7) is connected with the fifth pipeline (5) through a second regulating valve (T2).
4. The pressure swing adsorption forward and reverse bleeding system as claimed in claim 2, wherein: and a reverse air discharging boundary area passage is arranged between the air inlet connecting passage and the vacuum passage, and sequentially comprises a sixth program control valve (F6), a sixth pipeline (6), a tenth program control valve (F10) and a thirteenth pipeline (13) according to the gas flow direction.
5. The pressure swing adsorption forward and reverse bleeding system as claimed in claim 2, wherein: the forward and reverse releasing buffer tank (V102), the eighth program control valve (F8), the tenth pipeline (10), the eighth pipeline (8), the fourth program control valve (F4), the fourth pipeline (4) and an air outlet end (N2) of the adsorption tower (T101) form the forward and reverse releasing system;
the fourth pipeline (4), the second programmable valve (F2), the fifth programmable valve (F5), the second regulating valve (T2), the seventh pipeline (7) and the third programmable valve (F3) form a final charging and primary pressure equalizing system;
the fourth pipeline (4), the fourth programmable valve (F4), the eighth pipeline (8), the third regulating valve (T3), the ninth pipeline (9) and the fifth programmable valve (F5) form a last pressure equalizing system;
the eleventh pipeline (11), the sixth programmable valve (F6), the sixth pipeline (6), the tenth programmable valve (F10), the twelfth pipeline (12) and the thirteenth pipeline (13) form a reverse discharge system.
6. The pressure swing adsorption forward and reverse bleeding system as claimed in claim 2, wherein: the tail end of the fifth pipeline (5) is connected with a pressure transmitter (P1) and a first regulating valve (T1) according to the gas flowing direction, so as to realize the discharge of the product gas.
CN202021127238.8U 2020-06-17 2020-06-17 Pressure swing adsorption forward and backward discharging system Active CN213160114U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113713564A (en) * 2021-09-07 2021-11-30 安徽泉盛化工有限公司 Pressure swing adsorption system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113713564A (en) * 2021-09-07 2021-11-30 安徽泉盛化工有限公司 Pressure swing adsorption system

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