CN211419581U - Pressure swing adsorption nitrogen making system - Google Patents
Pressure swing adsorption nitrogen making system Download PDFInfo
- Publication number
- CN211419581U CN211419581U CN201922417630.XU CN201922417630U CN211419581U CN 211419581 U CN211419581 U CN 211419581U CN 201922417630 U CN201922417630 U CN 201922417630U CN 211419581 U CN211419581 U CN 211419581U
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- gas
- oxygen
- pressure swing
- swing adsorption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a pressure swing adsorption nitrogen system, it is including making the nitrogen subassembly, oxygen analysis appearance, nitrogen gas flowmeter and proportional control valve, oxygen analysis appearance sets up the end of giving vent to anger at making the nitrogen subassembly, a content for detecting oxygen in the nitrogen gas of making nitrogen subassembly output, gas outlet at oxygen analysis appearance is connected with the nitrogen gas flowmeter, the gas outlet department bypass of nitrogen gas flowmeter is equipped with exhaust pipe, oxygen analysis appearance detects oxygen content when exceeding standard, gas is discharged through exhaust pipe, be connected with the proportional control valve through main gas flow pipeline in the gas outlet department of nitrogen gas flowmeter, gas appliances are connected to the exit end of proportional control valve, when gas appliances's gas consumption changes in the certain extent, the proportional control valve is according to the nitrogen gas use amount of gas appliances slowly adjusts the flow of the nitrogen gas of output. The utility model discloses can reduce the fault rate of equipment by a wide margin, reduce the energy consumption, prolong the life of equipment, the guarantee is uninterrupted to the nitrogen gas supply of gas appliances, promotes gas appliances's production efficiency.
Description
Technical Field
The utility model relates to a gas separation and clarification plant, especially utilize the pressure swing adsorption nitrogen machine of pressure swing adsorption theory of operation production nitrogen gas, this scheme can also be used to other pressure swing adsorption equipment, for example oxygen machine, hydrogen machine etc..
Background
Nitrogen is produced by separating nitrogen from oxygen in air using a gas separation process, typically using a specially treated activated carbon, i.e., a carbon molecular sieve, to separate the air. The aperture of the carbon molecular sieve is in the diameter range of nitrogen and oxygen molecules, and the oxygen molecules are smaller than the nitrogen molecules in volume, so that the oxygen molecules are adsorbed on the surface of the carbon molecular sieve firstly. The nitrogen molecules are discharged into the nitrogen storage tank through the molecular sieve bed layer to achieve the purpose of nitrogen preparation, and the oxygen molecules are desorbed by equipment and discharged into the atmosphere to achieve the purpose of molecular sieve regeneration.
The existing pressure swing adsorption nitrogen making system is generally provided with an oxygen analyzer at the rear end of a nitrogen storage tank, when the oxygen content exceeds the standard, an alarm is given out, and actions of emptying the nitrogen are taken, so that the nitrogen with the oxygen content exceeding the standard can not be conveyed to a device for using the nitrogen at a client. The problem of varying oxygen concentration may arise when the nitrogen flow demand of downstream gas applications varies. At this time, if the oxygen analyzer detects that the oxygen concentration exceeds the standard, an alarm is given, and unqualified nitrogen produced is discharged, so that the nitrogen supply is stopped. When the above situation occurs, the nitrogen production system needs to continuously evacuate the unqualified nitrogen until the nitrogen detected by the oxygen analyzer is qualified, and a large amount of compressed air and electric energy are consumed in the period, so how to solve the problem of shutdown caused by the fluctuation of the nitrogen dosage becomes a subject to be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to in the background art current nitrogen generator take place under the condition of change at the volume of nitrogen gas for the production, oxygen content exceeds standard in the nitrogen gas of supply, lead to oxygen analysis appearance alarm easily, the produced unqualified nitrogen gas of nitrogen generator discharges in the atmosphere, the nitrogen generator need not work incessantly, it is qualified until the nitrogen gas that oxygen analysis appearance detected, the energy that needs to consume is very big, cause the extravagant scheduling problem of the energy, a pressure swing adsorption nitrogen generating system that can solve aforementioned problem is provided.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a pressure swing adsorption nitrogen generation system is structurally characterized in that: it includes the nitrogen making subassembly, the oxygen analysis appearance, nitrogen gas flowmeter and proportional control valve, the oxygen analysis appearance sets up the end of giving vent to anger at the nitrogen making subassembly, a content of oxygen in the nitrogen gas for detecting the output of nitrogen making subassembly, gas outlet at the oxygen analysis appearance is connected with the nitrogen gas flowmeter, the gas outlet department bypass of nitrogen gas flowmeter is equipped with exhaust pipe, the oxygen analysis appearance detects that oxygen content exceeds standard, gas is discharged through exhaust pipe, gas outlet department at the nitrogen gas flowmeter is connected with the proportional control valve through main gas flow pipeline, the gas equipment is connected to the exit end of proportional control valve, when the gas equipment's gas consumption changes in the certain extent, the proportional control valve is according to the nitrogen gas use amount of gas equipment and the nitrogen gas purity slow regulation output's that the oxygen analysis appearance detected the flow of nitrogen gas.
The nitrogen making assembly comprises an air compressor, an air purifier, an air storage tank, a pressure swing adsorption nitrogen making machine and a nitrogen storage tank, wherein the air compressor, the air purifier, the air storage tank, the pressure swing adsorption nitrogen making machine and the nitrogen storage tank are sequentially connected through a gas pipeline, and the gas outlet end of the nitrogen storage tank is connected with the gas inlet end of the oxygen analyzer.
The pressure swing adsorption nitrogen generator comprises double groups of adsorption cylinders or multiple groups of modularized nitrogen generators.
The further scheme is that the exhaust pipeline comprises a manual valve and a pneumatic valve, the manual valve is opened when the nitrogen making system is started, and the pneumatic valve is automatically opened according to the detection result of the oxygen analyzer if the oxygen content exceeds the standard.
The utility model discloses has positive effect: 1) the utility model discloses a pressure swing adsorption nitrogen system, when the nitrogen gas quantity of gas appliances changes in certain extent, especially when gas consumption increases, the aperture of proportional control valve can not reach the aperture of required flow immediately, but can be according to the nitrogen gas purity that oxygen analyzer detected slowly rising regulation, through this kind of mode, oxygen content in the nitrogen gas of messenger's supply can not exceed standard, accord with the gas appliances gas demand of gas appliances, and oxygen analyzer can not report to the police, can not lead to the nitrogen generator because of the unqualified evacuation of nitrogen gas, and stop the air feed, can avoid frequent heavy switching and influence the life of equipment, and nitrogen gas can not be evacuated in the nitrogen gas storage tank, the energy saving, the energy consumption that causes the evacuation of unqualified nitrogen gas of equipment has been avoided, nitrogen gas quantity along with the nitrogen generator produces rises gradually to accord with the gas appliances gas demand of gas appliances, the aperture of proportional control valve also rises gradually to corresponding aperture, the gas-using equipment cannot be stopped or produce product defects due to lack of nitrogen; 2) the utility model discloses a pressure swing adsorption nitrogen system, simple structure, the implementation of being convenient for can show promotion production efficiency.
Drawings
Fig. 1 is a schematic view of the connection structure of the present invention (two sets of connecting cylinders);
fig. 2 is a schematic view of the connection structure of the present invention (four sets of modular nitrogen generators);
wherein, system nitrogen subassembly 1, air compressor machine 11, air cleaner 12, air storage tank 13, pressure swing adsorption nitrogen generator 14, adsorption cylinder 141, modularization nitrogen generator 142, nitrogen storage tank 15, oxygen analysis appearance 2, nitrogen gas flowmeter 3, proportional control valve 4, exhaust pipe 5, manual valve 51, pneumatic valve 52, gas-using equipment 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the pressure swing adsorption nitrogen production system of the present embodiment includes a nitrogen production module 1, an oxygen analyzer 2, a nitrogen gas flow meter 3, and a proportional control valve 4.
The nitrogen generation assembly 1 comprises an air compressor 11, an air purifier 12, an air storage tank 13, a pressure swing adsorption nitrogen generator 14 and a nitrogen storage tank 15. The air compressor 11, the air purifier 12, the air storage tank 13, the pressure swing adsorption nitrogen generator 14 and the nitrogen storage tank 15 are connected in sequence through a gas pipeline. The pressure swing adsorption nitrogen generator 14 includes dual sets of adsorption cartridges 141 or multiple sets of modular nitrogen generators 142.
The oxygen analyzer 2 is arranged at the air outlet end of the nitrogen storage tank 15 of the nitrogen making assembly 1 and used for detecting the content of oxygen in the nitrogen output by the nitrogen storage tank 15, if the content of the oxygen in the output nitrogen exceeds the standard, the nitrogen in the nitrogen storage tank 15 is emptied, and the nitrogen making assembly 1 still needs to continuously work to produce the nitrogen so as to replace the unqualified nitrogen to be qualified.
The nitrogen gas flowmeter 3 is provided at the outlet of the oxygen analyzer 2, and the nitrogen gas flowmeter 3 is used to detect the flow rate of the output nitrogen gas. An exhaust pipeline 5 is arranged at the bypass of the air outlet of the nitrogen flowmeter 3, and when the oxygen content detected by the oxygen analyzer 2 exceeds the standard, the air is exhausted through the exhaust pipeline 5. The exhaust pipeline 5 comprises a manual valve 51 and a pneumatic valve 52, the manual valve 51 is automatically opened when the nitrogen making system is started, and the pneumatic valve 52 is automatically opened according to the detection result of the oxygen analyzer if the oxygen content exceeds the standard.
The proportional control valve 4 is connected with the gas outlet of the nitrogen flowmeter 3 through a main gas flow pipeline, the outlet end of the proportional control valve 4 is connected with a gas using device 6, when the gas using amount of the gas using device 6 is changed within a certain range, the proportional control valve 4 slowly adjusts the flow rate of the output nitrogen according to the nitrogen usage amount of the gas using device 6 and the nitrogen purity detected by the oxygen analyzer, if the gas consumption of the gas using device 6 is reduced, the situation can not cause the increase of the oxygen concentration in the nitrogen, the proportional control valve 4 can be quickly adjusted to the required flow opening degree, the gas using device 6 works normally, if the gas usage of the gas consumer 6 rises, the proportional control valve 6 does not immediately adjust to the flow opening required by the gas consumer 6, but will be slowly lifted up on the premise of ensuring that the oxygen content in the nitrogen is lower than the set value until reaching the flow opening required by the gas-using equipment 6.
The utility model discloses a pressure swing adsorption nitrogen system, outside air purifies in the leading-in purifier 12 again through the compression of compressor 11, and purifier 12 includes devices such as cold dry machine or absorption formula desiccator, filter and active carbon adsorption jar, most oil, water and dust among the detached compressed air, and the air admission after the purification buffers air storage tank 13. The compressed air in the air storage tank 13 is the intake air of the pressure swing adsorption nitrogen generator, which generally comprises an activated carbon adsorption tank and a molecular sieve adsorption cylinder, wherein the activated carbon adsorption tank is a pressure container filled with an activated carbon adsorbent and is arranged at the front end of the molecular sieve adsorption cylinder to play a role of protecting the molecular sieve so as to avoid polluting the molecular sieve. Then, the compressed air flows through the adsorption cylinder 141 from bottom to top, the adsorption cylinder 141 is filled with the carbon molecular sieve, and oxygen molecules and nitrogen molecules are adsorbed on the surface of the carbon molecular sieve when the gas passes through the adsorption cylinder. Because the molecular diameters are different, oxygen molecules are adsorbed on the surface of the carbon molecular sieve more than nitrogen molecules, most of the oxygen molecules are adsorbed, and the nitrogen molecules flow out of the upper end of the adsorption tower and enter the nitrogen tank. After a period of adsorption, the carbon molecular sieve is saturated with adsorbed oxygen molecules and needs to be regenerated, and the regeneration is realized by depressurization desorption. Since the carbon molecular sieve can no longer adsorb gas molecules at low pressure, most molecules are evacuated at reduced pressure, a process known as desorption. In order to achieve continuous gas supply, a double-tower operation is generally adopted, when one adsorption cylinder is in an adsorption state, the other adsorption cylinder is in a desorption state, and the two cylinders are mutually switched into the adsorption and desorption states by utilizing time control and switching. The nitrogen produced by the pressure swing adsorption nitrogen generator 14 flows into the nitrogen storage tank 15 for use by gas equipment. To achieve standardization, flexible integration and energy conservation measures, it is common to use even multiple modular nitrogen generators 142, sharing a control system and nitrogen tanks. The control system can set the operation quantity of the submachine according to the flow rate, the purity and the like. Solitary pressure swing adsorption nitrogen generator or modular pressure swing adsorption nitrogen generator, set up an oxygen analysis appearance 2 at nitrogen gas storage tank rear end usually, detect the content of oxygen in the nitrogen gas of 15 outputs in the nitrogen gas storage tank, when oxygen content exceeds standard, will send out the police dispatch newspaper, preceding air compressor machine 11 of list, air cleaner 12 and pressure swing adsorption nitrogen generator 14 can not shut down, but continue the manufacturing of nitrogen gas, and discharge the nitrogen gas that oxygen content exceeds standard through the evacuation pipeline 5 of flowmeter bypass, unqualified nitrogen gas just can not be carried to gas appliances like this.
In general, if the nitrogen consumption of the gas using device 6 is reduced, the problem that the oxygen content in the nitrogen output from the nitrogen storage tank exceeds the standard is avoided. However, when the nitrogen consumption of the gas-using equipment 6 is suddenly increased, in the existing scheme, the pneumatic valve connected with the gas-using equipment 6 is opened to the maximum opening degree, and is adjusted to the flow opening degree required by the gas-using equipment, and the change of the air pressure of the nitrogen storage tank is caused due to the increase of the flow, so that the exceeding of the oxygen content is easily caused. The utility model discloses an in the scheme, adjust the flow aperture of supplying to the nitrogen gas of gas appliances 6 through proportional control valve 4, when gas appliances 6 with tolerance increase suddenly, proportional control valve 4 can not adjust required flow aperture with the aperture at once, but can be under the prerequisite of oxygen content in the guarantee nitrogen gas, slow promotion flow aperture, until proportional control valve 4's flow aperture is unanimous with the required flow aperture of gas appliances 6. In the process, because the flow opening degree slowly rises, the oxygen concentration detected by the oxygen analyzer 2 slowly changes, the changed data and the data of the nitrogen flowmeter 3 are sent to the control equipment for controlling the lifting speed of the flow opening degree of the proportional control valve 4, and the oxygen content in the supplied nitrogen is not overproof, so that the oxygen analyzer 2 cannot give an alarm, the air compressor 11, the air purifier 12 and the pressure swing adsorption nitrogen generator 14 cannot stop supplying qualified nitrogen, and the manufactured nitrogen cannot be emptied. Because air compressor machine 11, air purifier 12 and pressure swing adsorption nitrogen generator 14 are when the start, required energy is very big, and after the steady operation, the energy consumption can reduce, therefore, the utility model discloses a scheme can enough reduce the fault rate of equipment by a wide margin, can reduce the energy consumption again by a wide margin, and equipment need not frequent evacuation with unqualified nitrogen gas simultaneously, also can avoid the start process to the harm of equipment, prolongs the life of equipment, simultaneously, can ensure not to interrupt the nitrogen gas supply of gas equipment, can show the production efficiency who promotes the gas equipment.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A pressure swing adsorption nitrogen generation system which is characterized in that: it includes the nitrogen making subassembly, the oxygen analysis appearance, nitrogen gas flowmeter and proportional control valve, the oxygen analysis appearance sets up the end of giving vent to anger at the nitrogen making subassembly, a content of oxygen in the nitrogen gas for detecting the output of nitrogen making subassembly, gas outlet at the oxygen analysis appearance is connected with the nitrogen gas flowmeter, the gas outlet department bypass of nitrogen gas flowmeter is equipped with exhaust pipe, the oxygen analysis appearance detects that oxygen content exceeds standard, gas is discharged through exhaust pipe, gas outlet department at the nitrogen gas flowmeter is connected with the proportional control valve through main gas flow pipeline, the gas equipment is connected to the exit end of proportional control valve, when the gas equipment's gas consumption changes in the certain extent, the proportional control valve is according to the nitrogen gas use amount of gas equipment and the nitrogen gas purity slow regulation output's that the oxygen analysis appearance detected the flow of nitrogen gas.
2. The pressure swing adsorption nitrogen generation system of claim 1, wherein: the nitrogen making assembly comprises an air compressor, an air purifier, an air storage tank, a pressure swing adsorption nitrogen making machine and a nitrogen storage tank, the air compressor, the air purifier, the air storage tank, the pressure swing adsorption nitrogen making machine and the nitrogen storage tank are sequentially connected through a gas pipeline, and the air outlet end of the nitrogen storage tank is connected with the air inlet end of an oxygen analyzer.
3. The pressure swing adsorption nitrogen generation system of claim 2, wherein: the pressure swing adsorption nitrogen generator comprises double groups of adsorption cylinders or a plurality of groups of modularized nitrogen generators.
4. The pressure swing adsorption nitrogen generation system of claim 1, wherein: the exhaust pipeline comprises a manual valve and a pneumatic valve, the manual valve is opened when the nitrogen making system is started, and the pneumatic valve is automatically opened according to the detection result of the oxygen analyzer if the oxygen content exceeds the standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922417630.XU CN211419581U (en) | 2019-12-27 | 2019-12-27 | Pressure swing adsorption nitrogen making system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922417630.XU CN211419581U (en) | 2019-12-27 | 2019-12-27 | Pressure swing adsorption nitrogen making system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211419581U true CN211419581U (en) | 2020-09-04 |
Family
ID=72245362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922417630.XU Active CN211419581U (en) | 2019-12-27 | 2019-12-27 | Pressure swing adsorption nitrogen making system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211419581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797698A (en) * | 2021-09-06 | 2021-12-17 | 江苏苏净工程建设有限公司 | Gas emission standard exceeding detection control method, system and device for lithium battery production |
-
2019
- 2019-12-27 CN CN201922417630.XU patent/CN211419581U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797698A (en) * | 2021-09-06 | 2021-12-17 | 江苏苏净工程建设有限公司 | Gas emission standard exceeding detection control method, system and device for lithium battery production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211419581U (en) | Pressure swing adsorption nitrogen making system | |
| CN211419580U (en) | Energy-saving modular pressure swing adsorption nitrogen making system | |
| CN110921636B (en) | Energy-saving modular pressure swing adsorption nitrogen production system and control flow thereof | |
| CN214528139U (en) | Energy-saving oxygen generator | |
| CN203212325U (en) | Molecular sieve desorption and regeneration structure for VPSA (vacuum pressure swing adsorption) oxygen generating device | |
| CN101613777A (en) | The technology of blowback of a kind of blast furnace dry method bag-type dust and deashing | |
| CN106006564A (en) | Energy-saving type domestic oxygen generator with multi-stage air purification system | |
| CN111217341A (en) | PSA nitrogen production system process flow | |
| CN215692988U (en) | Pressure swing adsorption carbon molecular sieve oxygen generator | |
| CN203829882U (en) | Product gas output device of high-purity high-pressure gas production device | |
| CN110548366A (en) | method and device for recovering acetylene from acetylene generator replacement waste gas | |
| CN215692989U (en) | PSA carbon molecular sieve nitrogen making device | |
| CN206089031U (en) | Energy -saving domestic oxygenerator that contains multistage air purification system | |
| CN212675381U (en) | PID automatic switching adsorption period system | |
| CN201470267U (en) | Asphalt gas purification device | |
| CN211500795U (en) | Low-concentration gas oxygen-doped power generation system | |
| CN103894036B (en) | Based on high-purity, the high compacting gas equipment of PSA technology | |
| CN205527752U (en) | Industry frequency conversion nitrogen generator | |
| CN203833611U (en) | Recovery device applicable to byproduct enriched oxygen of set or more sets of PSA (Pressure Swing Adsorption) nitrogen preparing device | |
| CN203829881U (en) | PSA (Pressure Swing Adsorption) technology based high-purity and high-pressure gas production device | |
| CN203829880U (en) | Raw material gas preprocessing device special for high-purity high-pressure gas preparation device | |
| CN219462946U (en) | Energy-saving nitrogen making machine | |
| CN212151625U (en) | Energy-saving twin-tower nitrogen making equipment | |
| CN112591955B (en) | Automatic oxygen source system for feedwater oxygenation treatment process and oxygen generation method | |
| CN218467794U (en) | Air compressor machine and medical oxygen generating equipment allies oneself with accuse device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |