CN112279222A - Pressure swing adsorption nitrogen making equipment - Google Patents
Pressure swing adsorption nitrogen making equipment Download PDFInfo
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- CN112279222A CN112279222A CN202011258686.6A CN202011258686A CN112279222A CN 112279222 A CN112279222 A CN 112279222A CN 202011258686 A CN202011258686 A CN 202011258686A CN 112279222 A CN112279222 A CN 112279222A
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Abstract
The invention provides pressure swing adsorption nitrogen production equipment which comprises a control system, an air compression system, a purification system, an adsorption system and a gas storage system, wherein a detection system is connected between the purification system and the adsorption system, the detection system comprises a detection mechanism, a first buffer tank and a standby purification mechanism, the detection mechanism is used for detecting the humidity and the particulate matter concentration in gas output by the purification system, the detection mechanism comprises a detection tank, the first buffer tank is connected with the output end of the purification system, and the input end of the detection tank is connected with the output end of the first buffer tank. The invention can realize automatic detection of the purification effect of the purification system, and the addition of the standby purification mechanism enables the nitrogen production process to be always operated, so as to solve the problems that the existing pressure swing adsorption nitrogen production equipment is easy to damage the adsorption equipment when the purification effect is not timely monitored, and the continuous operation capability is not good enough.
Description
Technical Field
The invention relates to pressure swing adsorption nitrogen making equipment, and belongs to the technical field of nitrogen making equipment.
Background
Pressure Swing Adsorption (PSA) is a new gas separation technology, which uses air as raw material and utilizes the selective adsorption performance of a high-efficiency and high-selectivity solid adsorbent to nitrogen and oxygen to separate the nitrogen and oxygen from the air.
In the prior art, a purification device is arranged in front of an adsorption tower in pressure swing adsorption nitrogen production equipment, the purification device is used for absorbing moisture and particulate matters in air, dry and clean air enters the adsorption tower for nitrogen-oxygen separation, if the moisture-containing air enters the adsorption tower, the adsorption tower becomes humid, dust is easily accumulated to cause blockage, the existing nitrogen production equipment is difficult to automatically detect the purification effect of the purification device, regular detection is usually carried out manually, a delay period exists in the mode, the adsorption tower becomes humid and blocks dust when air which is not purified enters the adsorption tower in the delay period, the adsorption equipment is damaged, and meanwhile, in the existing detection process, the operation of the whole nitrogen production equipment is stopped when the purification effect of the purification device is reduced, the purification device is replaced and cleaned, and the nitrogen production process is stopped, reducing the overall nitrogen production efficiency.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide pressure swing adsorption nitrogen making equipment which can automatically detect the purification effect of a purification system and is added with a standby purification mechanism so that the nitrogen making process can be always operated, thereby solving the problems that the existing pressure swing adsorption nitrogen making equipment is easy to damage the adsorption equipment when the purification effect is not timely monitored and the continuous operation capability is not good enough.
In order to achieve the purpose, the invention is realized by the following technical scheme: a pressure swing adsorption nitrogen production device comprises a control system, an air compression system, a purification system, an adsorption system and a gas storage system, wherein a detection system is connected between the purification system and the adsorption system;
the detection system comprises a detection mechanism, a first buffer tank and a standby purification mechanism, wherein the detection mechanism is used for detecting the humidity and the particulate matter concentration in the gas output by the purification system, the detection mechanism comprises a detection tank, the first buffer tank is connected with the output end of the purification system, the input end of the detection tank is connected with the output end of the first buffer tank, the output end of the detection tank is connected with the input end of the adsorption system through a first valve, the output end of the standby purification mechanism is connected with the input end of the detection tank, the input end of the standby purification mechanism is connected with the output end of the air compression system through a second valve, and the input end of the purification system is connected with the output end of the air compression system through a third valve;
the detection tank comprises a first particulate matter concentration sensor, a second particulate matter concentration sensor, a first humidity sensor and a second humidity sensor, the first particulate matter concentration sensor is used for acquiring the particulate matter concentration of the gas input by the first buffer tank, the second particulate matter concentration sensor is used for acquiring the particulate matter concentration of the gas input by the standby purification mechanism, the first humidity sensor is used for acquiring the humidity of the gas input by the first buffer tank, and the second humidity sensor is used for acquiring the humidity of the gas input by the standby purification mechanism;
the control system comprises a controller, a display screen and an alarm, wherein the display screen and the alarm are electrically connected with the controller, the alarm comprises a sound alarm and a warning lamp, the warning lamp is used for displaying red light, yellow light and green light, the controller is respectively electrically connected with a first valve, a second valve, a third valve, a first particulate matter concentration sensor, a second particulate matter concentration sensor, a first humidity sensor and a second humidity sensor, an information processing unit is arranged in the controller and generates a first concentration value according to the particulate matter concentration of gas input by a received first buffer tank, the information processing unit generates a second concentration value according to the particulate matter concentration of the gas input by a received standby purification mechanism, and the information processing unit generates a first humidity value according to the humidity of the gas input by the received first buffer tank, the information processing unit generates a second humidity value according to the received gas humidity input by the standby purification mechanism, a first algorithm and a second algorithm are configured in the information processing unit, the first algorithm is used for obtaining a first purification value through calculation according to a first concentration value and the first humidity value, and the second algorithm is used for obtaining a second purification value through calculation according to a second concentration value and the second humidity value;
a regulating strategy is configured in the controller, the regulating strategy is configured with a first threshold value, and the regulating strategy comprises that when the first purification value is smaller than the first threshold value, the controller controls the first valve and the third valve to be opened and controls the second valve to be closed; the controller controls the third valve to close and controls the first and second valves to open when the first purge value is greater than a first threshold.
Further, the first algorithm is set to P1＝K1A1+K2B1Wherein P1 is a first purge value, K1 is a first weighted value, a1 is a first concentration value, K2 is a second weighted value, and B1 is a first humidity value; the second algorithm is set to P2＝K3A2+K4B2Wherein P2 is a second purge value, K3 is a third weighted value, a2 is a second concentration value, K4 is a fourth weighted value, and B2 is a second humidity value.
Further, an alarm strategy is also configured in the controller, a second threshold value is configured in the alarm strategy, and the second threshold value is smaller than the first threshold value; the alarm strategy comprises that when the first purification value and the second purification value are smaller than a second threshold value, the controller controls a warning lamp to display green light; when the first purification value and the second purification value are larger than a second threshold and smaller than a first threshold, the controller controls the warning lamp to display yellow light; when the first purification numerical value and the second purification numerical value are larger than a first threshold value, the controller controls the warning lamp to display red light and controls the sound alarm to give out alarm sound.
Further, the alarm strategy may further include displaying the first decontamination value and the second decontamination value on a display screen.
Further, the air compression system comprises an air compressor, the input end of the air compressor is connected with a front filter, and an activated carbon filter element is arranged inside the front filter.
Further, clean system includes high-efficient deoiling filter and freeze dryer, the input of high-efficient deoiling filter is connected through the third valve with the input of air compressor machine, the output of high-efficient deoiling filter is connected with freeze dryer's input, freeze dryer's output is connected with the input of first buffer tank.
Further, the adsorption system comprises a first adsorption tower and a second adsorption tower, wherein the input end of the first adsorption tower is connected with the output end of the detection tank through a first valve, and the output end of the first adsorption tower is connected with the input end of the second adsorption tower.
Further, the gas storage system includes second buffer tank, booster compressor and gas holder, the input of second buffer tank is connected with the output of second adsorption tower, the output of second buffer tank is connected with the input of booster compressor, the output of booster compressor is connected with the input of gas holder.
Further, reserve purification mechanism includes reserve deoiling filter and reserve desiccator, the output of reserve deoiling filter is connected with the input of reserve desiccator, the input of reserve deoiling filter is connected through the second valve with the output of air compressor machine, the output of reserve desiccator is connected with the input that detects the jar.
Further, the outside of first particulate matter concentration sensor and first humidity transducer is provided with first test tube, first test tube is connected with the gas input port of first buffer tank, the outside of second particulate matter concentration sensor and second humidity transducer is provided with the second test tube, the second test tube is connected with the gas input port of reserve desiccator.
The invention has the beneficial effects that: according to the invention, the detection system is added between the purification system and the adsorption system, the purification effect can be monitored in time through the design, and the controller can be used for controlling in time, so that the detection convenience of the nitrogen making equipment is improved;
the controller is internally provided with the information processing unit and is configured with the regulation and control strategy, and the standby purification mechanism can be started in time by controlling the operation of the first valve, the second valve and the third valve, so that the operation of the nitrogen making process can be continuously kept when the purification effect of the purification system is reduced, and the nitrogen making efficiency of the nitrogen making equipment is improved;
according to the invention, by configuring the alarm strategy in the controller, the design can remind workers in time according to the purification result of the purification system, so that the man-machine reasonable collocation is realized, and the timeliness of monitoring is improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of a connection structure according to the present invention;
FIG. 2 is a schematic structural diagram of an air compression system;
FIG. 3 is a schematic diagram of the detection system;
FIG. 4 is a view showing the internal structure of the detection tank.
In the figure: 1. a control system; 11. a controller; 12. a display screen; 13. an audible alarm; 14. a warning light; 2. an air compression system; 21. a pre-filter; 22. an air compressor; 221. a second valve; 222. a third valve; 3. a purification system; 31. a high-efficiency oil removal filter; 32. a freeze dryer; 4. a detection system; 41. a first buffer tank; 42. a detection tank; 43. a standby purification mechanism; 421. a first valve; 422. a first detection tube; 423. a first particulate matter concentration sensor; 424. a first humidity sensor; 425. a second detection tube; 426. a second particulate matter concentration sensor; 427. a second humidity sensor; 431. a standby oil removing filter; 432. a standby dryer; 5. an adsorption system; 51. a first adsorption tower; 52. a second adsorption column; 6. a gas storage system; 61. a second buffer tank; 62. a supercharger; 63. an air storage tank.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, fig. 1 is a schematic view of a connection structure according to the present invention.
The utility model provides a pressure swing adsorption nitrogen making equipment, including control system 1, air compression system 2, clean system 3, adsorption system 5 and gas storage system 6, the air loops through air compression system 2 and compresses, purify through clean system 3 again, carry out the nitrogen and oxygen separation through adsorption system 5, store the nitrogen gas of preparation to gas storage system 6 in at last, be connected with detecting system 4 between clean system 3 and the adsorption system 5, detecting system 4 is arranged in detecting particulate matter concentration and humidity in the gas of 3 outputs of clean system.
Detection system 4 includes detection mechanism, first buffer tank 41 and reserve purification mechanism 43, and detection mechanism is used for detecting, and first buffer tank 41 can store the gas of purification mechanism output, and the gaseous output quantity of control guarantees its steady even volume output of body, and reserve purification mechanism 43 can in time launch when purification system 3 efficiency reduces.
The control system 1 comprises a controller 11, a display screen 12 and an alarm, wherein the display screen 12 and the alarm are electrically connected with the controller 11, the alarm comprises a sound alarm 13 and a warning lamp 14, the controller 11 is used for controlling the operation of equipment, and the alarm can remind a worker of timely replacing and cleaning the purification system 3.
The adsorption system 5 comprises a first adsorption tower 51 and a second adsorption tower 52, wherein the input end of the first adsorption tower 51 is connected with the output end of the detection tank 42 through a first valve 421, the output end of the first adsorption tower 51 is connected with the input end of the second adsorption tower 52, the first adsorption tower 51 and the second adsorption tower 52 can perform pressure swing adsorption, and oxygen in the air is adsorbed through an internal molecular sieve so that nitrogen can pass through the adsorption tower.
The gas storage system 6 comprises a second buffer tank 61, a supercharger 62 and a gas storage tank 63, the input end of the second buffer tank 61 is connected with the output end of the second adsorption tower 52, the output end of the second buffer tank 61 is connected with the input end of the supercharger 62, the output end of the supercharger 62 is connected with the input end of the gas storage tank 63, the second buffer tank 61 can buffer the gas output by the adsorption system 5, the stable output gas of the supercharger 62 can be given, and the nitrogen is compressed by the supercharger 62 and then stored in the gas storage tank 63.
The detection mechanism is used for detecting the humidity and the particulate matter concentration in the gas output by the purification system 3, the detection mechanism comprises a detection tank 42, a first buffer tank 41 is connected with the output end of the purification system 3, the input end of the detection tank 42 is connected with the output end of the first buffer tank 41, the output end of the detection tank 42 is connected with the input end of the adsorption system 5 through a first valve 421, the output end of a standby purification mechanism 43 is connected with the input end of the detection tank 42, the input end of the standby purification mechanism 43 is connected with the output end of the air compression system 2 through a second valve 221, and the input end of the purification system 3 is connected with the output end of the air compression system 2 through a third valve 222.
The detection tank 42 includes a first particulate matter concentration sensor 423 for acquiring the particulate matter concentration of the gas input from the first buffer tank 41, a second particulate matter concentration sensor 426 for acquiring the particulate matter concentration of the gas input from the backup purification mechanism 43, a first humidity sensor 424 for acquiring the humidity of the gas input from the first buffer tank 41, and a second humidity sensor 427 for acquiring the humidity of the gas input from the backup purification mechanism 43;
the warning lamp 14 is used for displaying three lights of red, yellow and green, the controller 11 is electrically connected to the first valve 421, the second valve 221, the third valve 222, the first particulate matter concentration sensor 423, the second particulate matter concentration sensor 426, the first humidity sensor 424 and the second humidity sensor 427, respectively, an information processing unit is disposed in the controller 11, the information processing unit generates a first concentration value according to the received particulate matter concentration of the gas input by the first buffer tank 41, the information processing unit generates a second concentration value according to the received particulate matter concentration of the gas input by the backup purification mechanism 43, the information processing unit generates a first humidity value according to the received humidity of the gas input by the first buffer tank 41, the information processing unit generates a second humidity value according to the received humidity of the gas input by the backup purification mechanism 43, the information processing unit is configured with a first algorithm and a second algorithm, the first algorithm is used for calculating to obtain a first purification value according to the first concentration value and the first humidity value, the second algorithm is used for calculating to obtain a second purification value according to the second concentration value and the second humidity value, and the information processing unit in the controller 11 can obtain the purification values of the gas output by the purification system 3 and the standby purification mechanism 43 through processing the obtained information, so that the purification grades can be divided.
The controller 11 is configured with a regulation strategy, the regulation strategy is configured with a first threshold value, and the regulation strategy comprises that when the first purification value is smaller than the first threshold value, the controller 11 controls the first valve 421 and the third valve 222 to be opened and controls the second valve 221 to be closed; when the first purge value is greater than the first threshold value, the controller 11 controls the third valve 222 to be closed, and controls the first valve 421 and the second valve 221 to be opened.
The first algorithm is set to P1＝K1A1+K2B1Wherein P1 is a first purge value, K1 is a first weighted value, a1 is a first concentration value, K2 is a second weighted value, and B1 is a first humidity value; the second algorithm is set to P2＝K3A2+K4B2Wherein P2 is a second purge value, K3 is a third weight value, a2 is a second concentration value, K4 is a fourth weight value, and B2 is a second humidity value, the overall architectures of the first algorithm and the second algorithm are similar, except that the weight values are different, the specific case needs to be determined according to the amount of the backup purge mechanism 43, and since the backup purge mechanism 43 cannot have the same amount as the purge system 3, the purge effect of the backup purge mechanism 43 is slightly inferior, and therefore, the proportion of the calculated weight values of the purge values is different in order to reduce the standard of the backup purge mechanism 43 during calculation, and the specific weight values of K1, K2, K3, and K4 are set according to the specific case.
An alarm strategy is also configured in the controller 11, and a second threshold value is configured in the alarm strategy, wherein the second threshold value is smaller than the first threshold value; the alarm strategy includes that when the first decontamination value and the second decontamination value are smaller than the second threshold value, the controller 11 controls the warning lamp 14 to display green light; when the first decontamination value and the second decontamination value are greater than the second threshold and smaller than the first threshold, the controller 11 controls the warning lamp 14 to display yellow light; when the first decontamination value and the second decontamination value are greater than the first threshold value, the controller 11 controls the warning lamp 14 to display red light and controls the sound alarm 13 to generate an alarm sound, and the alarm strategy further includes displaying the first decontamination value and the second decontamination value on the display 12.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an air compression system.
The air compression system 2 comprises an air compressor 22, the input end of the air compressor 22 is connected with a pre-filter 21, an activated carbon filter element is arranged inside the pre-filter 21, and the output end of the air compressor 22 is respectively connected with the standby purification mechanism 43 and the purification system 3 through a second valve 221 and a third valve 222.
Referring to fig. 3 and 4, fig. 3 is a schematic structural diagram of a detection system; FIG. 4 is a view showing the internal structure of the detection tank.
The standby purification mechanism 43 includes a standby oil removal filter 431 and a standby dryer 432, an output end of the standby oil removal filter 431 is connected with an input end of the standby dryer 432, an input end of the standby oil removal filter 431 is connected with an output end of the air compressor 22 through the second valve 221, and an output end of the standby dryer 432 is connected with an input end of the detection tank 42.
A first detection pipe 422 is provided outside the first particulate matter concentration sensor 423 and the first humidity sensor 424, the first detection pipe 422 is connected to a gas input port of the first buffer tank 41, a second detection pipe 425 is provided outside the second particulate matter concentration sensor 426 and the second humidity sensor 427, the second detection pipe 425 is connected to a gas input port of the standby dryer 432, and the gas purified by the purification system 3 and the gas purified by the standby purification mechanism 43 can be separately detected by adding the first detection pipe 422 and the second detection pipe 425.
The working principle is as follows: the air is compressed through air compression system 2 in proper order in purification process, purify through purification system 3, detect through detecting system 4, when detecting that the first numerical value of purifying system 3 is higher than first threshold value in the detection process, close third valve 222, start second valve 221, make air compression system 2's gas direct transmission to reserve purification mechanism 43 in, controller 11 reminds the staff through display screen 12 and siren simultaneously, equipment continues to keep the operation, the rethread adsorption system 5 carries out the separation of nitrogen oxygen, the nitrogen gas of preparing at last is stored to in the gas storage system 6, automatic detection and automatic control equipment continue to operate has been realized, help the promotion of nitrogen generation efficiency.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A pressure swing adsorption nitrogen production device comprises a control system (1), an air compression system (2), a purification system (3), an adsorption system (5) and a gas storage system (6), and is characterized in that a detection system (4) is connected between the purification system (3) and the adsorption system (5);
the detection system (4) comprises a detection mechanism, a first buffer tank (41) and a standby purification mechanism (43), the detection mechanism is used for detecting the humidity and the particulate matter concentration in the gas output by the purification system (3), the detection mechanism comprises a detection tank (42), the first buffer tank (41) is connected with the output end of the purification system (3), the input end of the detection tank (42) is connected with the output end of the first buffer tank (41), the output end of the detection tank (42) is connected with the input end of the adsorption system (5) through a first valve (421), the output end of the standby purification mechanism (43) is connected with the input end of the detection tank (42), the input end of the standby purification mechanism (43) is connected with the output end of the air compression system (2) through a second valve (221), the input end of the purification system (3) is connected with the output end of the air compression system (2) through a third valve (222);
the detection tank (42) comprises a first particulate matter concentration sensor (423), a second particulate matter concentration sensor (426), a first humidity sensor (424) and a second humidity sensor (427), wherein the first particulate matter concentration sensor (423) is used for acquiring the particulate matter concentration of the gas input by the first buffer tank (41), the second particulate matter concentration sensor (426) is used for acquiring the particulate matter concentration of the gas input by the standby purification mechanism (43), the first humidity sensor (424) is used for acquiring the humidity of the gas input by the first buffer tank (41), and the second humidity sensor (427) is used for acquiring the humidity of the gas input by the standby purification mechanism (43);
the control system (1) comprises a controller (11), a display screen (12) and an alarm, wherein the display screen (12) and the alarm are electrically connected with the controller (11), the alarm comprises a sound alarm (13) and a warning lamp (14), the warning lamp (14) is used for displaying red light, yellow light and green light, the controller (11) is electrically connected with a first valve (421), a second valve (221), a third valve (222), a first particulate matter concentration sensor (423), a second particulate matter concentration sensor (426), a first humidity sensor (424) and a second humidity sensor (427) respectively, an information processing unit is arranged in the controller (11), the information processing unit generates a first concentration value according to the received particulate matter concentration of gas input by a first buffer tank (41), and generates a second concentration value according to the received particulate matter concentration of gas input by a standby purification mechanism (43), the information processing unit generates a first humidity value according to the received humidity of the gas input by the first buffer tank (41), the information processing unit generates a second humidity value according to the received humidity of the gas input by the acquisition standby purification mechanism (43), a first algorithm and a second algorithm are configured in the information processing unit, the first algorithm is used for obtaining the first purification value through calculation according to the first concentration value and the first humidity value, and the second algorithm is used for obtaining the second purification value through calculation according to the second concentration value and the second humidity value;
a regulation strategy is configured in the controller (11), the regulation strategy is configured with a first threshold value, and the regulation strategy comprises that when the first purification value is smaller than the first threshold value, the controller (11) controls the first valve (421) and the third valve (222) to be opened, and controls the second valve (221) to be closed; when the first purge value is greater than a first threshold value, the controller (11) controls the third valve (222) to close, and controls the first valve (421) and the second valve (221) to open.
2. The pressure swing adsorption nitrogen plant of claim 1, wherein the first algorithm is set to P1＝K1A1+K2B1Wherein P1 is a first purge value, K1 is a first weighted value, a1 is a first concentration value, K2 is a second weighted value, and B1 is a first humidity value; the second algorithm is set to P2＝K3A2+K4B2Wherein P2 is a second purge value, K3 is a third weighted value, a2 is a second concentration value, K4 is a fourth weighted value, and B2 is a second humidity value.
3. The pressure swing adsorption nitrogen generation device according to claim 1, wherein an alarm strategy is further configured in the controller (11), a second threshold value is configured in the alarm strategy, and the second threshold value is smaller than the first threshold value; the alarm strategy comprises that when the first decontamination value and the second decontamination value are smaller than a second threshold value, the controller (11) controls the warning lamp (14) to display green light; when the first purification value and the second purification value are larger than a second threshold value and smaller than a first threshold value, the controller (11) controls the warning lamp (14) to display yellow light; when the first purification value and the second purification value are larger than a first threshold value, the controller (11) controls the warning lamp (14) to display red light and controls the sound alarm (13) to give out alarm sound.
4. The pressure swing adsorption nitrogen plant of claim 3, wherein the alarm strategy further comprises displaying the first purge value and the second purge value on a display screen (12).
5. The pressure swing adsorption nitrogen production equipment as claimed in claim 1, wherein the air compression system (2) comprises an air compressor (22), the input end of the air compressor (22) is connected with a pre-filter (21), and an activated carbon filter element is arranged inside the pre-filter (21).
6. The pressure swing adsorption nitrogen production equipment according to claim 5, wherein the purification system (3) comprises a high efficiency oil removal filter (31) and a freezing type dryer (32), the input end of the high efficiency oil removal filter (31) is connected with the input end of the air compressor (22) through a third valve (222), the output end of the high efficiency oil removal filter (31) is connected with the input end of the freezing type dryer (32), and the output end of the freezing type dryer (32) is connected with the input end of the first buffer tank (41).
7. The pressure swing adsorption nitrogen plant of claim 6, characterized in that the adsorption system (5) comprises a first adsorption column (51) and a second adsorption column (52), wherein an input end of the first adsorption column (51) is connected with an output end of the detection tank (42) through a first valve (421), and an output end of the first adsorption column (51) is connected with an input end of the second adsorption column (52).
8. The pressure swing adsorption nitrogen plant of claim 7, characterized in that the gas storage system (6) comprises a second buffer tank (61), a booster (62) and a gas storage tank (63), wherein an input of the second buffer tank (61) is connected with an output of the second adsorption column (52), an output of the second buffer tank (61) is connected with an input of the booster (62), and an output of the booster (62) is connected with an input of the gas storage tank (63).
9. The pressure swing adsorption nitrogen production equipment according to claim 1, wherein the backup purification mechanism (43) comprises a backup oil removal filter (431) and a backup dryer (432), an output end of the backup oil removal filter (431) is connected with an input end of the backup dryer (432), an input end of the backup oil removal filter (431) is connected with an output end of the air compressor (22) through a second valve (221), and an output end of the backup dryer (432) is connected with an input end of the detection tank (42).
10. The pressure swing adsorption nitrogen plant of claim 9, characterized in that a first detection pipe (422) is provided outside the first particulate matter concentration sensor (423) and the first humidity sensor (424), the first detection pipe (422) is connected to a gas input port of the first buffer tank (41), a second detection pipe (425) is provided outside the second particulate matter concentration sensor (426) and the second humidity sensor (427), and the second detection pipe (425) is connected to a gas input port of the backup dryer (432).
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