CN117258479A - Nitrogen supply system for aerosolization powder making equipment - Google Patents
Nitrogen supply system for aerosolization powder making equipment Download PDFInfo
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- CN117258479A CN117258479A CN202311144212.2A CN202311144212A CN117258479A CN 117258479 A CN117258479 A CN 117258479A CN 202311144212 A CN202311144212 A CN 202311144212A CN 117258479 A CN117258479 A CN 117258479A
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- nitrogen
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- compressed air
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 376
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 185
- 239000000843 powder Substances 0.000 title claims abstract description 33
- 238000012387 aerosolization Methods 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 31
- 238000001179 sorption measurement Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000007787 solid Substances 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 239000003921 oil Substances 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 239000002808 molecular sieve Substances 0.000 claims description 31
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 31
- 238000009689 gas atomisation Methods 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000000007 visual effect Effects 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 230000001172 regenerating effect Effects 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims 1
- 238000013022 venting Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 238000000889 atomisation Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
-
- 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
- C01B21/0455—Physical processing only by adsorption in solids characterised by the adsorbent
- C01B21/0461—Carbon based materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/104—Oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—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
- C01B2210/0045—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
-
- 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
- C01B2210/0098—Other impurities
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The application discloses a nitrogen supply system for an aerosolization powder process device, which obtains air through an air compressor and compresses the air to obtain compressed air; the air wet tank stores compressed air; the first filter and the second filter are used for filtering condensed water, oil and solid particles in the compressed air; the cold dryer condenses the water vapor in the compressed air into liquid water and discharges the liquid water with solid particles and oil outside the dryer; the air dry tank stores the filtered compressed air; the active carbon adsorption tower removes oil and organic gas in the compressed air; the PSA nitrogen making machine separates nitrogen with purity reaching a preset threshold value from compressed air; the nitrogen purity detection device detects the purity of the nitrogen; the nitrogen process tank stores nitrogen; the booster pressurizes the nitrogen; the high-pressure storage device stores the pressurized nitrogen; the pressure reducing valve reduces the pressure of the pressurized nitrogen to a preset air pressure range. The nitrogen preparation efficiency can be improved, and the nitrogen preparation method can be widely applied to the field of nitrogen preparation.
Description
Technical Field
The application relates to the technical field of nitrogen preparation, in particular to a nitrogen supply system for an aerosolized powder process device.
Background
The atomizing powder process is a current front-end powder process, and the atomizing powder process is a powder preparation method of impacting or otherwise breaking up metal or alloy liquid into fine droplets with a fast moving fluid (atomizing medium) followed by condensation into solid powder. It is counted that the metal powder produced by the atomization process has reached 80% of the total world powder yield. The metal powders that can be produced industrially using the atomization process are of a wide variety and comprise almost all common metal and alloy systems, except for the refractory metals tungsten, molybdenum, etc. and the very reactive metals.
The most widely used are gas atomization and water atomization, wherein gas atomization powder preparation refers to the process of crushing a liquid metal stream into small droplets by using high-speed air flow, and then rapidly condensing to obtain formed powder. The metal powder prepared by the method has the advantages of fine granularity, good sphericity, high purity, low oxygen content, high forming speed and small environmental pollution, and is a main stream method for preparing metal powder for powder metallurgy, metal injection molding and metal additive manufacturing. The high-pressure inert gas, generally argon and nitrogen, is used for atomizing in the industrial production because of the high price of the argon. The instantaneous flow rate of the gas for gas atomization is very large, but the atomization time is short, generally 10-30min. After each atomization, the raw materials need to be added again to be melted into molten alloy steel, and the period of time is about 1-2 hours. The gas consumption of the gas atomization equipment is characterized by short-time, large-flow and high-pressure gas consumption and intermittent gas consumption. The nitrogen source is usually liquid nitrogen, and the specific flow is as follows: a liquid nitrogen station is established beside the atomizing equipment, the liquid nitrogen is stored in a high-pressure bottle group after being pressurized and vaporized and then is conveyed to the atomizing equipment, and the liquid nitrogen is generally transported to the liquid nitrogen station by a tank truck through a liquid nitrogen source produced by a local gas preparation company.
The liquid nitrogen produced by the gas preparation company is pressurized through the liquid nitrogen transfer station to provide high-pressure nitrogen for atomization, and the following defects are overcome: 1. the price of the used nitrogen is relatively high, including the cost of liquid nitrogen produced by a gas preparation company, the cost of each vehicle of a transport tank truck and the rent of a transfer liquid nitrogen station; 2. the liquid nitrogen station is troublesome to maintain, and is used as special equipment of a pressure container, corresponding special equipment operation certificate, management certificate and the like are needed, high-capacity liquid nitrogen is stored, the liquid nitrogen station is also a potential safety hazard, and meanwhile, a pressure container storage tank, a booster, a vaporizer, a steel cylinder group, a safety valve, a pressure reducing valve, a pressure gauge and the like are also needed to be inspected frequently; 3. the liquid nitrogen station has higher height, can only be placed in outdoor open-air sites, occupies larger area, occupies production sites, is limited in site selection, and brings trouble to operation because the liquid nitrogen station is far away from atomizing equipment; 4. one of the characteristics of the gas used in the atomization device is that the gas is discontinuous, and the gas interval is about 1-2 hours each time, so that the liquid nitrogen station can pressurize the liquid nitrogen after the liquid nitrogen is emptied frequently to cool the pipeline and the booster pump, and the partially emptied liquid nitrogen is wasted.
Disclosure of Invention
In view of this, the present application provides a nitrogen gas supply system for aerosolization powder process equipment to solve the problem that prior art exists, improve the efficiency of nitrogen gas preparation.
An aspect of the present application provides a nitrogen gas supply system for an aerosolized powder process apparatus, comprising: the device comprises an air compressor, an air wet tank, a first filter, a cold dryer, a second filter, an air dry tank, an active carbon adsorption tower, a PSA nitrogen making machine, a nitrogen purity detection device, a nitrogen process tank, a supercharger, a high-pressure storage device and a pressure reducing valve which are connected in sequence;
the air compressor is used for acquiring air and compressing the air to obtain compressed air;
the air wet tank is used for storing the compressed air;
the first filter is used for filtering condensed water, oil and solid particles in the compressed air;
the cold dryer is used for condensing water vapor in the compressed air into liquid water so as to enable solid particles and oil in the compressed air to be attached to the liquid water and discharge the liquid water with the solid particles and the oil outside the dryer;
the second filter is used for filtering residual condensed water, oil and solid particles in the compressed air;
the air dry tank is used for storing the filtered compressed air;
the active carbon adsorption tower is used for removing oil and organic gas in the compressed air;
the PSA nitrogen generator is used for separating nitrogen with purity reaching a preset threshold value from the compressed air;
the nitrogen purity detection device is used for detecting the purity of the nitrogen;
the nitrogen process tank is used for storing nitrogen;
the supercharger is used for supercharging nitrogen;
the high-pressure storage device is used for storing the pressurized nitrogen;
the pressure reducing valve is used for reducing the pressure of the pressurized nitrogen to be within a preset air pressure range.
Optionally, the filter pore size of the first filter is larger than the filter pore size of the second filter.
Optionally, the first filter is a 9-stage filter.
Optionally, the second filter comprises a 7-stage filter, a 5-stage filter, a 3-stage filter and a 1-stage filter which are sequentially connected in series;
wherein, the filter pore sizes of the 7-level filter, the 5-level filter, the 3-level filter and the 1-level filter are sequentially reduced.
Optionally, the PSA nitrogen generator comprises two adsorption towers containing carbon molecular sieves and a nitrogen generator;
one of the adsorption towers containing carbon molecular sieve is used for purifying nitrogen, and the other adsorption tower containing carbon molecular sieve is used for regenerating nitrogen.
Optionally, the system further comprises an electrochemical oxygen analyzer, a flowmeter, a pressure gauge, a nitrogen purity audible and visual alarm system and an electromagnetic valve;
the nitrogen purity detection device, the electrochemical oxygen analyzer, the flowmeter, the pressure gauge, the nitrogen purity audible and visual alarm system and the electromagnetic valve are arranged on the nitrogen generator.
Optionally, the system further comprises a first PLC and a second PLC;
the nitrogen making machine, the nitrogen purity audible and visual alarm system and the electromagnetic valve are controlled by the first PLC;
the booster is controlled by the second PLC.
Optionally, the high-pressure storage device adopts a high-pressure steel bottle group.
Optionally, the air wet tank, the nitrogen process tank and the high-pressure storage device are provided with pressure gauges, pressure detection devices, pressure alarm devices, an overpressure automatic exhaust device, a safety valve and rupture discs.
Optionally, the system further comprises an atomizing device;
the atomizing equipment is connected with the air outlet end of the pressure reducing valve and is used for performing gas atomization powder preparation by using the nitrogen after pressure reduction.
The beneficial effects are that:
this application is to the not enough that exists when gas atomization plant adopts liquid nitrogen to be the air supply, provides a nitrogen gas supply system for gas atomization powder process equipment, and this application nitrogen gas supply system use low cost, easy operation or hardly need the people to operate, equipment maintenance is simple, area is little and can place inside the workshop, does not choose the place, can place nearby with gas atomization plant.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an alternative structure diagram of a nitrogen gas supply system for an aerosolized powder process apparatus according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It should be noted that although functional block division is performed in a device diagram and a logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart.
The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.
The embodiment of the application provides a nitrogen supply system for aerosolization powder process equipment, which comprises an air compressor, an air wet tank, a first filter, a cold dryer, a second filter, an air dry tank, an active carbon adsorption tower, a PSA nitrogen generator, a nitrogen purity detection device, a nitrogen process tank, a supercharger, a high-pressure storage device and a pressure reducing valve which are connected in sequence;
the air compressor is used for acquiring air and compressing the air to obtain compressed air;
the air wet tank is used for storing the compressed air;
the first filter is used for filtering condensed water, oil and solid particles in the compressed air;
the cold dryer is used for condensing water vapor in the compressed air into liquid water so as to enable solid particles and oil in the compressed air to be attached to the liquid water and discharge the liquid water with the solid particles and the oil outside the dryer;
the second filter is used for filtering residual condensed water, oil and solid particles in the compressed air;
the air dry tank is used for storing the filtered compressed air;
the active carbon adsorption tower is used for removing oil and organic gas in the compressed air;
the PSA nitrogen generator is used for separating nitrogen with purity reaching a preset threshold value from the compressed air;
the nitrogen purity detection device is used for detecting the purity of the nitrogen;
the nitrogen process tank is used for storing nitrogen;
the supercharger is used for supercharging nitrogen;
the high-pressure storage device is used for storing the pressurized nitrogen;
the pressure reducing valve is used for reducing the pressure of the pressurized nitrogen to be within a preset air pressure range.
Further, the filter pore size of the first filter is larger than the filter pore size of the second filter.
Still further, the first filter employs a 9-stage filter.
Further, the second filter comprises a 7-level filter, a 5-level filter, a 3-level filter and a 1-level filter which are sequentially connected in series;
wherein, the filter pore sizes of the 7-level filter, the 5-level filter, the 3-level filter and the 1-level filter are sequentially reduced.
Further, the PSA nitrogen making machine comprises two adsorption towers containing carbon molecular sieves and a nitrogen making machine;
one of the adsorption towers containing carbon molecular sieve is used for purifying nitrogen, and the other adsorption tower containing carbon molecular sieve is used for regenerating nitrogen.
Further, the system also comprises an electrochemical oxygen analyzer, a flowmeter, a pressure gauge, a nitrogen purity audible and visual alarm system and an electromagnetic valve;
the nitrogen purity detection device, the electrochemical oxygen analyzer, the flowmeter, the pressure gauge, the nitrogen purity audible and visual alarm system and the electromagnetic valve are arranged on the nitrogen generator.
Still further, the system further includes a first PLC and a second PLC;
the nitrogen making machine, the nitrogen purity audible and visual alarm system and the electromagnetic valve are controlled by the first PLC;
the booster is controlled by the second PLC.
Further, the high-pressure storage device adopts a high-pressure steel bottle group.
Further, the air wet tank, the nitrogen process tank and the high-pressure storage device are provided with a pressure gauge, a pressure detection device, a pressure alarm device, an overpressure automatic exhaust device, a safety valve and a rupture disk.
Further, the system further comprises an atomizing device;
the atomizing equipment is connected with the air outlet end of the pressure reducing valve and is used for performing gas atomization powder preparation by using the nitrogen after pressure reduction.
For the purpose of describing the present application in detail, the following will describe various devices and accessories in the system provided by the present application, in particular as follows:
advantages of the cold dryer: 1. the service life of a 7-stage filter connected at the back is prolonged, so that the 7-stage filter is not easy to fail; 2. after the oil and water are removed by the cold dryer, a pipeline system is not easy to be blocked, and the pipeline system is not easy to rust; 3. the purity of the nitrogen can be improved.
The fine filter group (i.e., the second filter) may include a secondary filter: the filter is a 7-level main pipeline filter and a 3-level efficient oil mist removing filter. The precision of the 7-level main pipeline filter is 1um, solid and liquid particles with the precision of 1um and larger are filtered, and the content of residual oil is 1ppm w/w. The 3-level efficient oil mist removing filter has the filtering precision of 0.01um, and filters solid and liquid particles of 0.01um and larger, and 99.999+% of oil mist; the residual oil content was 0.001ppm w/w. The compressed air quality reaches the ISO8573.1 quality class 1. The clean and dry compressed air reaching the above conditions can enter a later stage nitrogen making part to produce nitrogen with purity more than or equal to 99.999% through a PSA (Pressure Swing Adsorption ) nitrogen making machine.
The active carbon adsorption tower can be used for removing oil products in raw material air, ensuring oil-free in the raw material air and protecting an adsorbent in a nitrogen making machine. In the use process of the nitrogen making machine, oil vapor is generated under the condition of slightly high temperature, and the active carbon has developed pores, so that the nitrogen making machine has good adsorption characteristics for organic waste gas and good adsorption for oil gas.
The PSA nitrogen making machine consists of adsorption tower containing carbon molecular sieve and nitrogen making machine, the adsorption tower is divided into A/B two groups, one group is purified and the other group is regenerated. The nitrogen making machine is automatically controlled by a PLC, is automatically started up and automatically supplied without personnel operation when the pressure is insufficient, and is provided with a nitrogen purity detection device, an electrochemical oxygen analyzer, a flowmeter, a pressure gauge, a nitrogen purity audible and visual alarm system, an electromagnetic valve and the like.
When the nitrogen making machine starts to work, the carbon molecular sieve can reach the use working condition only after a period of time, the purity of the nitrogen does not reach the standard, and the nitrogen needs to be emptied at the moment, specifically: when the nitrogen purity detecting device detects that the prepared nitrogen purity is unqualified, the electromagnetic valve of the emptying pipeline is controlled by the PLC to be opened, the electromagnetic valve output to the nitrogen buffer tank (namely the nitrogen process tank) is closed, nitrogen is discharged from the emptying pipeline, after the nitrogen purity is qualified, the electromagnetic valve of the emptying pipeline is controlled by the PLC to be closed, the electromagnetic valve of the nitrogen buffer tank is opened, and qualified nitrogen is output to the nitrogen buffer tank for storage by the nitrogen making machine.
Carbon molecular sieves can adsorb oxygen, carbon dioxide, moisture, etc. in air, while nitrogen cannot be adsorbed. In the case of adsorption equilibrium, when any one of the adsorbents adsorbs the same gas, the higher the gas pressure, the larger the adsorption amount of the adsorbent. The carbon molecular sieve will largely adsorb oxygen, carbon dioxide and moisture when the air pressure is increased. When the pressure is reduced to normal pressure, the adsorption amount of the carbon molecular sieve to oxygen, carbon dioxide and moisture is very small, and simultaneously, the gas adsorbed at high pressure can be released when the pressure is reduced. The specific process is as follows: when compressed air (pressure is generally 0.65-0.8 MPa) passes through the group A from bottom to top, oxygen, carbon dioxide and moisture are adsorbed by the carbon molecular sieve, and nitrogen passes through and flows out from the top of the column, so that the gas purification process is completed. When the adsorption of the molecular sieve in the group A is saturated, the adsorption process is switched to the adsorption process of the group B, and the molecular sieve in the group A is regenerated at the same time. Regeneration is a process of discharging the gas in the adsorption tower to the atmosphere to rapidly lower the pressure to normal pressure, and releasing oxygen, carbon dioxide and moisture adsorbed by the molecular sieve from the molecular sieve.
The carbon molecular sieve is prepared from natural coconut shells as raw materials, and is prepared into a special adsorbent special for purifying nitrogen in air through special pulverization, pore-forming and processing.
The carbon molecular sieve adopts a 'storm type' molecular sieve filling process technology, so that uniform and tight filling of the carbon molecular sieve in the adsorption tower is ensured, and no dead angle exists; compared with other filling modes (such as vibration filling), the filling density of the carbon molecular sieve is improved by 10%, the gaps among the carbon molecular sieves are greatly reduced, and the pulverization phenomenon caused by the collision among the molecular sieves is effectively controlled; the carbon molecular sieve has high filling density, prevents fluidization phenomenon, prolongs the service life of the molecular sieve, and can reach 8-10 years; the molecular sieve is uniform and compact, so that the tunnel effect is avoided, the air flow is ensured to uniformly pass through the working bed layer, the carbon molecular sieve is fully utilized, and the nitrogen production efficiency is improved; eliminating the sudden sinking phenomenon of the carbon molecular sieve.
The supercharger may be a nitrogen supercharger. The pressurizing cylinder and the driving cylinder of the nitrogen supercharger are separated and independently operated, so that the purity of nitrogen is not influenced. The nitrogen booster is controlled by a PLC, can automatically maintain pressure, and can automatically start up to supplement leakage pressure when the pressure-maintaining loop descends, so that the pressure of the loop is kept stable. The nitrogen booster is simple to maintain and high in cost performance, a plunger pump is adopted, the running speed of the pump is reduced until the pump stops along with the increase of the output pressure, and the energy consumption is low. The rear part of the nitrogen booster is connected with a one-way valve.
The high-pressure nitrogen steel cylinder group (namely, the high-pressure steel cylinder group) can store gas with the pressure of 15mpa, the number of steel cylinders of the steel cylinder group can be set according to the gas consumption, and in addition, the high-pressure nitrogen steel cylinder group can be replaced by a high-pressure nitrogen storage tank.
The pressure reducing valve can stably reduce the pressure of nitrogen with 15mpa to 3-6mpa, and is arranged at a position as close to the aerosolization equipment as possible in order to keep the pressure and flow stable after the pressure reduction and reduce the pressure loss.
The air buffer tank (namely an air wet tank), the nitrogen buffer tank and the high-pressure nitrogen steel cylinder group are provided with safety accessories such as a pressure gauge, a pressure detection device, an alarm device, an overpressure automatic exhaust device, a safety valve, a rupture disk and the like.
Referring to fig. 1, the present embodiment provides an alternative structural view of a nitrogen gas supply system for an aerosolized pulverizing apparatus.
Specifically, the specific workflow of the system shown in fig. 1 may include: the air pressure after the air compressor compresses is 0.6-0.85 mpa, the primarily compressed air enters an air wetting tank, is filtered by a 9-level filter and enters a cold dryer, the cold dryer forcedly cools the compressed air, and water vapor in the air is condensed into liquid water with dust and oil to be discharged out of the dryer. The cold dryer is a precise filter group (7-stage filter, 5-stage filter, 3-stage filter and 1-stage filter are sequentially connected in series), the air which is dried after filtration and is high-purity enters an air drying tank, is filtered by an active carbon adsorption tower and enters a PSA nitrogen generator, high-purity nitrogen with the purity of 99.999% and the dew point of-65 ℃ is prepared by the PSA nitrogen generator, and the nitrogen is detected to be qualified and enters a nitrogen process tank. The prepared high-purity nitrogen is conveyed to a supercharger for supercharging, the pressure of the supercharged nitrogen reaches 15mpa, the supercharged nitrogen is stored in a high-pressure steel bottle group, the high-pressure nitrogen is decompressed through a decompression valve (the pressure after decompression is generally 3-6 mpa), and the nitrogen is conveyed to an air atomizing device.
The specific gas utilization flow can comprise: and (3) putting raw materials into the gas atomization equipment to start production, and melting into molten alloy steel, wherein the time required for preparing to enter the gas atomization pulverizing stage is 1-2h. In the period, the high-purity high-pressure nitrogen is prepared by the nitrogen supply system and enters the high-pressure steel bottle group, so that the gas demand of the gas atomization equipment is met at any time. After the high-pressure nitrogen in the high-pressure steel bottle group meets the requirement of atomizing the gas used by the 1-2 furnace by the gas atomizing equipment, the nitrogen storage capacity in the high-pressure steel bottle group is reduced, the gas atomizing equipment is charged again, the time is required to be 1-2 hours, and at the moment, the nitrogen supply system is used for preparing the high-pressure high-purity nitrogen again and circularly and reciprocally. Although the instantaneous gas consumption of the gas atomization equipment is large, the gas consumption is intermittent, the smelting time occupies most part, the atomizing gas consumption time is only short, namely, the gas atomization equipment is used for smelting raw materials into alloy molten steel for 1-2 hours, the atomizing time is 10-30 minutes, and a nitrogen supply system can continuously produce and store enough nitrogen in the total time period to meet the gas consumption requirement of the gas atomization equipment for 10-30 minutes, so that each component of the nitrogen supply system comprises an air compressor, a PSA nitrogen generator, each buffer tank (a tank body capable of storing gas in the nitrogen supply system), a booster and the like, and the equipment purchase cost is low.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the embodiment, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and the equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.
Claims (10)
1. A nitrogen gas supply system for an aerosolized powder process apparatus, comprising: the device comprises an air compressor, an air wet tank, a first filter, a cold dryer, a second filter, an air dry tank, an active carbon adsorption tower, a PSA nitrogen making machine, a nitrogen purity detection device, a nitrogen process tank, a supercharger, a high-pressure storage device and a pressure reducing valve which are connected in sequence;
the air compressor is used for acquiring air and compressing the air to obtain compressed air;
the air wet tank is used for storing the compressed air;
the first filter is used for filtering condensed water, oil and solid particles in the compressed air;
the cold dryer is used for condensing water vapor in the compressed air into liquid water so as to enable solid particles and oil in the compressed air to be attached to the liquid water and discharge the liquid water with the solid particles and the oil outside the dryer;
the second filter is used for filtering residual condensed water, oil and solid particles in the compressed air;
the air dry tank is used for storing the filtered compressed air;
the active carbon adsorption tower is used for removing oil and organic gas in the compressed air;
the PSA nitrogen generator is used for separating nitrogen with purity reaching a preset threshold value from the compressed air;
the nitrogen purity detection device is used for detecting the purity of the nitrogen;
the nitrogen process tank is used for storing nitrogen;
the supercharger is used for supercharging nitrogen;
the high-pressure storage device is used for storing the pressurized nitrogen;
the pressure reducing valve is used for reducing the pressure of the pressurized nitrogen to be within a preset air pressure range.
2. A nitrogen supply system for an aerosolized powder process plant as recited in claim 1, wherein the first filter has a larger filter pore size than the second filter.
3. A nitrogen supply system for an aerosolized powder process plant as recited in claim 2, wherein the first filter is a 9-stage filter.
4. A nitrogen supply system for an aerosolized powder process plant as claimed in claim 2, wherein the second filter comprises a 7-stage filter, a 5-stage filter, a 3-stage filter and a 1-stage filter in series in this order;
wherein, the filter pore sizes of the 7-level filter, the 5-level filter, the 3-level filter and the 1-level filter are sequentially reduced.
5. A nitrogen supply system for an aerosolized powder process plant as recited in claim 1, wherein the PSA nitrogen generator comprises two adsorption columns containing carbon molecular sieves and one nitrogen generator;
one of the adsorption towers containing carbon molecular sieve is used for purifying nitrogen, and the other adsorption tower containing carbon molecular sieve is used for regenerating nitrogen.
6. A nitrogen supply system for an aerosolized milling apparatus according to claim 5, wherein the system further comprises an electrochemical oxygen analyzer, a flow meter, a pressure gauge, a nitrogen purity audible and visual alarm system, and a solenoid valve;
the nitrogen purity detection device, the electrochemical oxygen analyzer, the flowmeter, the pressure gauge, the nitrogen purity audible and visual alarm system and the electromagnetic valve are arranged on the nitrogen generator.
7. A nitrogen supply system for an aerosolized powder process plant as recited in claim 6, wherein the system further comprises a first PLC and a second PLC;
the nitrogen making machine, the nitrogen purity audible and visual alarm system and the electromagnetic valve are controlled by the first PLC;
the booster is controlled by the second PLC.
8. A nitrogen supply system for an aerosolized powder process plant as defined in claim 1, wherein the high pressure storage device is a high pressure steel bottle stack.
9. A nitrogen supply system for an aerosolized powder process plant as claimed in claim 1, wherein the air wetting tank, the nitrogen process tank and the high pressure storage device are each provided with a pressure gauge, a pressure detection device, a pressure alarm device, an overpressure automatic venting device, a safety valve and a rupture disk.
10. A nitrogen supply system for an aerosolized powder process plant according to any one of claims 1 to 9, wherein the system further comprises an aerosolization plant;
the atomizing equipment is connected with the air outlet end of the pressure reducing valve and is used for performing gas atomization powder preparation by using the nitrogen after pressure reduction.
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| CN202311144212.2A CN117258479A (en) | 2023-09-05 | 2023-09-05 | Nitrogen supply system for aerosolization powder making equipment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU9143482A (en) * | 1981-12-30 | 1983-07-07 | Bergwerksverband Gmbh | Process and apparatus for generating high purity nitrogen |
| CN206927615U (en) * | 2017-06-08 | 2018-01-26 | 南通恒光大聚氨酯材料有限公司 | A kind of multi-functional nitrogen making machine of silicone oil production |
| CN211837111U (en) * | 2019-12-26 | 2020-11-03 | 金寨县凯旋电子科技有限公司 | PSA nitrogen production system |
| CN214653658U (en) * | 2020-12-10 | 2021-11-09 | 上海亿维工业科技股份有限公司 | Nitrogen-rich gas recycling system of pressure swing adsorption nitrogen making machine |
-
2023
- 2023-09-05 CN CN202311144212.2A patent/CN117258479A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU9143482A (en) * | 1981-12-30 | 1983-07-07 | Bergwerksverband Gmbh | Process and apparatus for generating high purity nitrogen |
| CN206927615U (en) * | 2017-06-08 | 2018-01-26 | 南通恒光大聚氨酯材料有限公司 | A kind of multi-functional nitrogen making machine of silicone oil production |
| CN211837111U (en) * | 2019-12-26 | 2020-11-03 | 金寨县凯旋电子科技有限公司 | PSA nitrogen production system |
| CN214653658U (en) * | 2020-12-10 | 2021-11-09 | 上海亿维工业科技股份有限公司 | Nitrogen-rich gas recycling system of pressure swing adsorption nitrogen making machine |
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