CN113041784A - Nitrogen production system and nitrogen production method - Google Patents
Nitrogen production system and nitrogen production method Download PDFInfo
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- CN113041784A CN113041784A CN202110491573.9A CN202110491573A CN113041784A CN 113041784 A CN113041784 A CN 113041784A CN 202110491573 A CN202110491573 A CN 202110491573A CN 113041784 A CN113041784 A CN 113041784A
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- nitrogen
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- making machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
- B01D53/053—Pressure swing adsorption with storage or buffer vessel
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/045—Physical processing only by adsorption in solids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0045—Oxygen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0062—Water
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0068—Organic compounds
Abstract
The invention discloses a nitrogen production system and a nitrogen production method, belonging to the technical field of nitrogen production, wherein the nitrogen production system comprises a base, and an air compressor, an air buffer tank, an air treatment device, a nitrogen production machine, a nitrogen buffer tank, a pressurization conveying device and a high-pressure nitrogen storage tank which are fixedly arranged on the base and are sequentially connected through a pipeline according to the airflow direction; wherein the nitrogen making method comprises the step of preparing nitrogen according to the nitrogen making system. The invention has high integration level, and all subsystems are installed in a centralized way, thereby being convenient for flexible deployment, having small occupied area and effectively reducing the damage caused by unstable pressure air impacting equipment.
Description
Technical Field
The invention relates to the technical field of nitrogen production, in particular to a nitrogen production system and a nitrogen production method.
Background
The nitrogen generator is a device which takes air as a raw material and obtains nitrogen by separating oxygen and nitrogen in the air by a physical method. The nitrogen making machine is nitrogen making equipment designed and manufactured according to pressure swing adsorption technology, and the nitrogen making machine uses high-quality imported Carbon Molecular Sieve (CMS) as an adsorbent and adopts the pressure swing adsorption Principle (PSA) to separate air at normal temperature to make high-purity nitrogen. Usually, two adsorption towers are connected in parallel, an inlet PLC controls an inlet pneumatic valve to automatically operate, and the inlet pneumatic valve alternately performs pressurization adsorption and decompression regeneration to complete nitrogen-oxygen separation and obtain nitrogen with high purity.
Nitrogen generators are currently widely used in various industries, for example: 1. in the machining industry, for laser wire cutting and for the prevention of oxidation of certain special parts and equipment; 2. in the pharmaceutical industry, for the packaging, storage, encapsulation, etc. of certain pharmaceutical products; 3. in the food industry, the method is used for green storage of grains, nitrogen-filled packaging of foods, fresh keeping of vegetables and the like; 4. in the electronic industry, the method is used for producing and packaging semiconductors, producing electronic elements, producing LED liquid crystal displays, LCD liquid crystal displays, lithium batteries and the like.
However, since the nitrogen generator needs a stable and clean air source when operating, the nitrogen generator in the prior art is usually equipped with an air compressor for generating compressed air and an air treatment device for treating the compressed air. However, in the prior art, the nitrogen making machine and the air compressor serving the nitrogen making machine are usually separately deployed, which causes the whole system to be difficult to transfer, cannot be flexibly deployed along with the change of the use place, and has large floor area; meanwhile, because the air output by the air compressor has certain pressure, when the air is directly input into the air treatment equipment and the nitrogen making machine, the impact force of the air treatment equipment and the nitrogen making machine can damage the equipment, and therefore the service life of the equipment is influenced.
Disclosure of Invention
Aiming at the problems that the nitrogen making machine and the matched equipment thereof in the prior art have large occupied area and are difficult to transfer, and the equipment is easy to be damaged by pressure air, the invention aims to provide a nitrogen making system and a nitrogen making method.
In order to achieve the purpose, the technical scheme of the invention is as follows:
on one hand, the invention provides a nitrogen production system which comprises a base, and an air compressor, an air buffer tank, an air treatment device, a nitrogen production machine, a nitrogen buffer tank, a pressurizing conveying device and a high-pressure nitrogen storage tank which are fixedly arranged on the base and sequentially connected through pipelines according to the air flow direction.
Preferably, the air treatment device comprises an oil removal tank, a cold dryer, a purifier and a buffer tank which are sequentially connected through a pipeline according to the air flow direction, wherein the oil removal tank is connected with the air buffer tank, and the buffer tank is connected with the nitrogen generator.
Preferably, the nitrogen generator is a pressure swing adsorption nitrogen generator, the nitrogen generator comprises an air tank, a nitrogen tank and two adsorption towers, the air tank is connected with the air treatment device, the air inlet end of each adsorption tower is connected with the air tank in parallel through a pipe valve component, the gas production end of each adsorption tower is connected with the nitrogen tank in parallel through a pipe valve component, so that the adsorption towers alternately perform pressurization adsorption and decompression regeneration, and the nitrogen tank is connected with the nitrogen buffer tank.
Preferably, the pipe valve assembly includes a main pipe, two branch pipes connected to the main pipe, and a control valve installed on each of the branch pipes.
Preferably, the control valve is a pneumatic valve or an electric valve.
Preferably, the pressurizing and conveying device comprises a motor and a pressurizing pump in driving connection with the motor, wherein the suction end of the pressurizing pump is connected with the nitrogen buffer tank, and the discharge end of the pressurizing pump is connected with the high-pressure nitrogen storage tank.
Further, still include the controller, the controller is installed on the base, the controller with the air compressor machine, air treatment device, nitrogen generator, pressure boost conveyor electric connection.
Preferably, a one-way valve is arranged on a pipeline between the pressurization conveying device and the high-pressure nitrogen storage tank.
In another aspect, the present invention further provides a method for producing nitrogen, comprising the steps of:
compressing air by an air compressor, and sending the compressed air into an air buffer tank;
sending the compressed air in the air buffer tank to an air treatment device, and performing one or more treatments of oil removal, drying, cooling and purification on the sent compressed air through the air treatment device;
sending the processed compressed air into a nitrogen making machine, and separating the air into oxygen and nitrogen through the nitrogen making machine;
sending the nitrogen separated by the nitrogen making machine into a nitrogen buffer tank;
and pressurizing and conveying the nitrogen in the nitrogen buffer tank to a high-pressure nitrogen storage tank for storage through a pressurizing and conveying device.
Preferably, the air treatment device comprises an oil removal tank, a cold dryer, a purifier and a buffer tank which are sequentially connected through a pipeline according to the airflow direction, so that the air is buffered after the sent compressed air is subjected to oil removal, drying, cooling and purification treatment.
By adopting the technical scheme, the nitrogen making machine, the air compressor and the air treatment device which are matched with the nitrogen making machine can be intensively installed due to the arrangement of the base, so that the integral transfer is convenient, the flexible deployment is realized, and the integral occupied area is small; due to the arrangement of the air buffer tank, the impact of compressed air output by the air compressor on a downstream air treatment device and a nitrogen making machine is effectively reduced, so that the service life of the equipment is prolonged; in addition, due to the arrangement of the nitrogen buffer tank, nitrogen output by the nitrogen making machine can be buffered in the nitrogen buffer tank in advance, and then pressurized and conveyed by the pressurization conveying device into the high-pressure nitrogen storage tank for storage so as to be used conveniently.
Drawings
FIG. 1 is a front view of a nitrogen generation system of the present invention;
FIG. 2 is a top view of a nitrogen generation system of the present invention;
FIG. 3 is a flow chart of a nitrogen production method of the present invention.
In the figure, 1-base, 2-air compressor, 3-air buffer tank, 4-air processing device, 41-oil removing tank, 42-refrigeration dryer, 43-purifier, 44-buffer tank, 5-nitrogen making machine, 51-air tank, 52-nitrogen tank, 53-adsorption tower, 6-nitrogen buffer tank, 7-pressurizing conveying device, 71-motor, 72-pressurizing pump, 8-high pressure nitrogen storage tank and 9-controller.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on structures shown in the drawings, and are only used for convenience in describing the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the technical scheme, the terms "first" and "second" are only used for referring to the same or similar structures or corresponding structures with similar functions, and are not used for ranking the importance of the structures, or comparing the sizes or other meanings.
In addition, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. To those skilled in the art, the specific meanings of the above terms in the present invention can be understood in light of the present general concepts, in connection with the specific context of the scheme.
Example one
The utility model provides a nitrogen system, as shown in fig. 1 and fig. 2, includes base 1 and fixed mounting on base 1 and pass through air compressor machine 2, air buffer tank 3, air treatment device 4, nitrogen generator 5, nitrogen buffer tank 6, pressure boost conveyor 7 and high-pressure nitrogen gas storage tank 8 that the pipeline connects gradually according to the air current direction.
The base 1 is a rectangular frame structure formed by metal profiles (such as channel steel or H-shaped steel) through welding or bolt splicing. The air compressor 2 is a piston type or screw type compressor, and preferably is an oil-free air compressor, and the air compressor 2 generally has an independent cabinet which is fixedly installed on the base 1 through bolts.
The air treatment device 4 is used for treating the compressed air in the air buffer tank 3, such as oil removal, cooling, drying, purification, etc. In this embodiment, the air treatment device 4 includes a degreasing tank 41, a cooling dryer 42, a purifier 43, and a buffer tank 44, which are connected in this order by a pipe in the air flow direction. Wherein, deoiling jar 41 is connected with foretell air buffer tank 3 through the pipeline to in accept compressed air, and buffer tank 44 then is connected with nitrogen generator 5 through the pipeline, so that after buffering the compressed air that will process, send the pressure air that pressure is more steady to nitrogen generator 5 and make nitrogen. In the present embodiment, the air treatment device 4 also includes a separate base which is mounted on the base 1 by bolts, and the oil removing tank 41, the air dryer 42, the purifier 43, and the buffer tank 44 are mounted on the separate base.
The nitrogen generator 5 is a pressure swing adsorption nitrogen generator, and preferably is a pressure swing adsorption nitrogen generator having two adsorption towers to alternately operate, and specifically, the nitrogen generator includes an air tank 51, a nitrogen tank 52, and two adsorption towers 53, and a base for supporting the air tank 51, the nitrogen tank 52, and the two adsorption towers 53, and the base is fixedly mounted on the base 1 by bolts. The air tank 51 is connected to the air treatment device 4 (specifically, the buffer tank 44) through a pipeline, the air inlet ends of the two adsorption towers 53 are connected in parallel to the air tank 51 through a pipe valve assembly, the gas outlet ends (nitrogen outlets) of the two adsorption towers 53 are also connected in parallel to the nitrogen tank 52 through a pipe valve assembly, so that the two adsorption towers 53 alternately perform pressure adsorption and decompression regeneration, and the nitrogen tank 52 is connected to the nitrogen buffer tank 6 through a pipeline. Wherein, the pipe valve subassembly includes trunk line, two branch pipes of connecting on the trunk line and installs the control valve on every branch pipe, and the control valve is pneumatic valve or motorised valve to conveniently carry out PLC control, during the use, two adsorption towers 53 are connected respectively to the free end of two branch pipes, and the trunk line then is used for connecting the air tank 51 of upper reaches or is the nitrogen gas tank 52 of low reaches. Among them, the air tank 51 is used for buffering the pressure air to further reduce the pressure fluctuation of the air inputted into the adsorption tower 53, and the nitrogen tank 52 is used for buffering the generated nitrogen. The main pipe is also provided with the above-mentioned control valve so as to isolate the adsorption tower 53 when the operation is stopped.
The nitrogen buffer tank 6 has a large volume so as to collect the nitrogen generated from the nitrogen generator 5 and reduce the pressure fluctuation of the nitrogen. The nitrogen buffer tank 6 also comprises a tank body and a bracket connected to the bottom of the tank body, and the bracket is also fixedly installed on the base 1 through bolts.
The booster conveying device 7 comprises a motor 71 and a booster pump 72 which is in driving connection (such as a belt or a coupling) with the motor 71, and the booster conveying device 7 also comprises a separate base for carrying the motor 71 and the booster pump 72, and the separate base is also fixedly installed on the base 1 through bolts. And the suction end of booster pump 72 passes through the pipeline and connects foretell nitrogen buffer tank 6, the discharge end then passes through pipeline connection low reaches high-pressure nitrogen gas storage tank 8, this high-pressure nitrogen gas storage tank 8 is pressure vessel, great memory space has, high-pressure nitrogen gas storage tank 8 also includes a jar body and connects the support in jar body bottom, this support also passes through bolt fixed mounting on base 1, in addition, install the check valve on the pipeline between booster pump 72 and the high-pressure nitrogen gas storage tank 8 to nitrogen gas can only one-way flow to high-pressure nitrogen gas storage tank 8.
Simultaneously, still include controller 9, controller 9 and foretell air compressor machine 2, air treatment device 4, nitrogen generator 5, pressure boost conveyor 7 electric connection to the operating condition of each consumer is convenient for control. In this embodiment, the controller 9 is configured as a work station, and the work station 9 is fixedly installed on the base 1.
Example two
A method of producing nitrogen, as shown in fig. 3, comprising the steps of:
step S1, compressing air through an air compressor, and sending the compressed air into an air buffer tank;
step S2, sending the compressed air in the air buffer tank to an air treatment device, and carrying out one or more treatments of oil removal, drying, cooling and purification on the sent compressed air through the air treatment device;
in this step, the compressed air in the air buffer tank flows to the air treatment device through the pressure of the air treatment device, and in this embodiment, the preferred air treatment device includes the deoiling tank, the cold dryer, the purifier and the buffer tank that connect gradually through the pipeline according to the air current direction to after carrying out deoiling, drying, cooling, purification treatment to the compressed air that sends into, buffer the air again.
Step S3, sending the processed compressed air into a nitrogen making machine, and separating the air into oxygen and nitrogen through the nitrogen making machine;
in the step, the processed compressed air flows to the nitrogen making machine through the pressure of the compressed air, the nitrogen making machine is configured as a PSA nitrogen making machine, a high-quality inlet Carbon Molecular Sieve (CMS) is used as an adsorbent, air is separated by adopting a pressure swing adsorption Principle (PSA) at normal temperature to prepare high-purity nitrogen, two adsorption towers are usually connected in parallel, an inlet pneumatic valve is controlled by an inlet PLC to automatically operate, and the inlet pneumatic valve alternately performs pressurization adsorption and decompression regeneration to complete nitrogen-oxygen separation and obtain the required high-purity nitrogen.
Step S4, sending the nitrogen separated by the nitrogen making machine into a nitrogen buffer tank;
in this step, the nitrogen gas separated by the nitrogen generator flows to the nitrogen buffer tank in a pressure self-flowing manner.
And step S5, pressurizing and conveying the nitrogen in the nitrogen buffer tank to a high-pressure nitrogen storage tank by a pressurizing and conveying device for storage.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (10)
1. A nitrogen generation system, characterized by: including base and fixed mounting just pass through air compressor machine, air buffer tank, air treatment device, nitrogen generator, nitrogen buffer tank, pressure boost conveyor and the high-pressure nitrogen gas storage tank that the pipeline connects gradually according to the air current direction on the base.
2. The nitrogen generation system of claim 1, wherein: the air treatment device comprises an oil removal tank, a cold dryer, a purifier and a buffer tank which are sequentially connected through a pipeline according to the air flow direction, wherein the oil removal tank is connected with the air buffer tank, and the buffer tank is connected with the nitrogen making machine.
3. The nitrogen generation system of claim 1, wherein: the nitrogen making machine is pressure swing adsorption nitrogen making machine, the nitrogen making machine includes air tank, nitrogen gas jar and two adsorption towers, the air tank with air treatment device connects, two the inlet end of adsorption tower pass through the pipe valve subassembly with air tank parallel connection, produce the gas end pass through the pipe valve subassembly with nitrogen gas jar parallel connection so that two the adsorption towers pressurizes in turn and adsorbs and decompress regeneration, the nitrogen gas jar with the nitrogen buffer tank is connected.
4. The nitrogen generation system of claim 3, wherein: the pipe valve assembly comprises a main pipe, two branch pipes connected to the main pipe and a control valve installed on each branch pipe.
5. The nitrogen generation system of claim 4, wherein: the control valve is a pneumatic valve or an electric valve.
6. The nitrogen generation system of claim 1, wherein: the pressurizing and conveying device comprises a motor and a pressurizing pump which is connected with the motor in a driving way, wherein the suction end of the pressurizing pump is connected with the nitrogen buffer tank, and the discharge end of the pressurizing pump is connected with the high-pressure nitrogen storage tank.
7. The nitrogen generation system of claim 1, wherein: the nitrogen making machine is characterized by further comprising a controller, wherein the controller is installed on the base and electrically connected with the air compressor, the air treatment device, the nitrogen making machine and the pressurizing and conveying device.
8. The nitrogen generation system of claim 1, wherein: and a one-way valve is arranged on a pipeline between the pressurization conveying device and the high-pressure nitrogen storage tank.
9. A method of producing nitrogen, comprising: the method comprises the following steps:
compressing air by an air compressor, and sending the compressed air into an air buffer tank;
sending the compressed air in the air buffer tank to an air treatment device, and performing one or more treatments of oil removal, drying, cooling and purification on the sent compressed air through the air treatment device;
sending the processed compressed air into a nitrogen making machine, and separating the air into oxygen and nitrogen through the nitrogen making machine;
sending the nitrogen separated by the nitrogen making machine into a nitrogen buffer tank;
and pressurizing and conveying the nitrogen in the nitrogen buffer tank to a high-pressure nitrogen storage tank for storage through a pressurizing and conveying device.
10. The nitrogen production method according to claim 9, characterized in that: the air treatment device comprises an oil removal tank, a cold dryer, a purifier and a buffer tank which are sequentially connected through a pipeline according to the air flow direction, so that the air is cached after the sent compressed air is subjected to oil removal, drying, cooling and purification treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110491573.9A CN113041784A (en) | 2021-05-06 | 2021-05-06 | Nitrogen production system and nitrogen production method |
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| CN202110491573.9A CN113041784A (en) | 2021-05-06 | 2021-05-06 | Nitrogen production system and nitrogen production method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100315A (en) * | 2021-12-09 | 2022-03-01 | 杭州贵能森节能技术有限公司 | System for utilize PSA nitrogen generator oxygen boosting tail gas to get rid of waste gas and waste water in pit |
| CN114259002A (en) * | 2021-12-24 | 2022-04-01 | 天津森罗科技股份有限公司 | Construction method and device of modified atmosphere preservation device |
| WO2023221958A1 (en) * | 2022-05-17 | 2023-11-23 | 阿特拉斯•科普柯（无锡）压缩机有限公司 | Nitrogen generation device |
-
2021
- 2021-05-06 CN CN202110491573.9A patent/CN113041784A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100315A (en) * | 2021-12-09 | 2022-03-01 | 杭州贵能森节能技术有限公司 | System for utilize PSA nitrogen generator oxygen boosting tail gas to get rid of waste gas and waste water in pit |
| CN114259002A (en) * | 2021-12-24 | 2022-04-01 | 天津森罗科技股份有限公司 | Construction method and device of modified atmosphere preservation device |
| WO2023221958A1 (en) * | 2022-05-17 | 2023-11-23 | 阿特拉斯•科普柯（无锡）压缩机有限公司 | Nitrogen generation device |
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