CN220380081U - Drying device of nitrogen making system - Google Patents
Drying device of nitrogen making system Download PDFInfo
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- CN220380081U CN220380081U CN202321679283.8U CN202321679283U CN220380081U CN 220380081 U CN220380081 U CN 220380081U CN 202321679283 U CN202321679283 U CN 202321679283U CN 220380081 U CN220380081 U CN 220380081U
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- nitrogen
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- gas
- condenser
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 222
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 105
- 238000001035 drying Methods 0.000 title claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 238000003860 storage Methods 0.000 claims abstract description 12
- 238000001179 sorption measurement Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 24
- 229910001868 water Inorganic materials 0.000 abstract description 22
- 239000007789 gas Substances 0.000 abstract description 19
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- 229910001873 dinitrogen Inorganic materials 0.000 description 13
- 239000000945 filler Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000002808 molecular sieve Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920005597 polymer membrane Polymers 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- -1 during the use Chemical compound 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Drying Of Gases (AREA)
Abstract
The utility model discloses a drying device of a nitrogen making system. Nitrogen making system drying device includes: an air compressor, a nitrogen generator, a condenser, a liquid nitrogen storage tank and a gas-liquid separator; the gas-liquid separator is arranged between the nitrogen generator and the condenser; the air compressor is connected with the nitrogen making machine; the condenser is connected with the liquid nitrogen storage tank; the gas-liquid separator comprises a shell and a condensing tube arranged in the shell. According to the nitrogen production system drying device, the gas-liquid separator comprising the shell, the condenser pipe, the first spiral pipe, the second spiral pipe and the communicating pipe is arranged, so that the mixed gas can move along the spiral travel route, the travel route is longer, the contact area between water molecules in the gas and the condenser pipe, the first spiral pipe and the second spiral pipe is larger, the condensation speed of the water molecules is improved, and the drying efficiency of nitrogen is further improved.
Description
Technical Field
The utility model relates to the technical field of nitrogen production, in particular to a drying device of a nitrogen production system.
Background
The pressure swing adsorption nitrogen production is to use air as raw material, carbon molecular sieve as adsorbent, and the characteristic of selective adsorption of oxygen and nitrogen in air by using carbon molecular sieve is utilized to separate oxygen and nitrogen at normal temperature by using pressure swing adsorption principle (pressure adsorption, pressure reduction desorption and molecular sieve regeneration). The existing nitrogen production process mainly comprises the steps of compressing air through an air compressor, sending the air into a nitrogen production machine, obtaining nitrogen through pressure swing adsorption nitrogen production or membrane molecular filtration nitrogen production by the nitrogen production machine, condensing the nitrogen coming out of the nitrogen production machine into liquid through a condenser, and storing the liquid in a liquid nitrogen storage tank. The pressure swing adsorption nitrogen production has the remarkable characteristics of being carried out at normal temperature, simple in process, compact in equipment, small in occupied area, convenient to start and stop, quick in starting, quick in gas production (generally about 30 minutes), low in energy consumption, low in operation cost, high in automation degree, convenient to operate and maintain, convenient to skid-mount, free of special foundation, adjustable in nitrogen purity of the product in a certain range, and less than or equal to 2000Nm/h. However, most of the existing nitrogen production technologies using PSA can only produce common nitrogen with the purity of 99.9% (i.e. O2 is less than or equal to 0.1%), even most of the nitrogen has the concentration of 95-98%; or 99.99% pure nitrogen (O2 is less than or equal to 0.01%) can be prepared, and the industrial production of high-purity nitrogen with purity of more than or equal to 99.999% can not be achieved temporarily due to the input of equipment. Therefore, the non-low temperature nitrogen producing technology is used to produce high purity nitrogen and the subsequent purifying apparatus is also necessary. The subsequent purification of nitrogen is mainly to remove water vapor and oxygen contained in the nitrogen. The purification mode is mainly hydrogenation and carbon deoxidation.
Through the search, the document with the prior authorized publication number of CN212101997U discloses a freeze drying device for nitrogen production, which comprises an air compressor, a nitrogen production machine, a gas-liquid separator, a condenser and a liquid nitrogen storage tank, wherein the gas-liquid separator comprises a feeding area and a separation area, and the separation area is of a cone-shaped barrel structure. The mixed gas of nitrogen spirally descends in the gas-liquid separator, and water molecules are condensed into liquid by low temperature in the central condensing tube in the spiral descending process; the liquid water, oxygen and nitrogen continuously spiral downwards run in the gas-liquid separator, and the liquid water and the oxygen are absorbed by the adsorption drying layer on the side wall of the gas-liquid separator in the running process. Collecting high-purity nitrogen from a gas channel in the center of the gas-liquid separator; the purity and dryness of the nitrogen are improved.
However, in the implementation process, the mixed gas of the nitrogen still has the defect that when the mixed gas contacts with the condensing pipe, water molecules are condensed into water, however, the higher the condensing speed of the mixed gas is, the slower the condensing speed of the water molecules which are far away from the condensing pipe is, when the mixed gas passes through the condensing pipe quickly, part of the water molecules which are far away from the condensing pipe cannot be condensed, and the aim of further reducing the water vapor content in the nitrogen can be achieved only by reducing the introducing speed of the mixed gas, and the drying efficiency of the nitrogen can be definitely reduced.
Therefore, there is a need to provide a drying device for nitrogen production systems that solves the above-mentioned problems.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects in the prior art, the utility model provides the nitrogen production system drying device which can improve the drying efficiency of nitrogen.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
nitrogen making system drying device includes: the device comprises an air compressor, a nitrogen making machine, a condenser, a liquid nitrogen storage tank and a gas-liquid separator, wherein the gas-liquid separator is arranged between the nitrogen making machine and the condenser, the air compressor is connected with the nitrogen making machine through a pipeline, and the condenser is connected with the liquid nitrogen storage tank through a three-way pipe; the gas-liquid separator comprises a shell and a condensing pipe arranged in the shell, wherein the bottom end of the condensing pipe is open, the top end of the condensing pipe extends out of the shell and is connected with the condenser, a first spiral pipe is arranged between the shell and the condensing pipe, a spiral air flow inlet channel is formed among the shell, the condensing pipe and the first spiral pipe, a second spiral pipe is arranged in the condensing pipe, a spiral air flow outlet channel is formed between the condensing pipe and the second spiral pipe, the first spiral pipe is connected with the second spiral pipe through a communicating pipe, the first spiral pipe is communicated with the inside of the second spiral pipe, a liquid outlet pipe is arranged at the bottom end of the first spiral pipe and is connected with the condenser, the bottom end of the second spiral pipe is connected with a three-way pipe at the outlet end of the condenser through a liquid inlet pipe, an air inlet pipe is arranged at one side of the shell, and the air inlet pipe is connected with the outlet of the nitrogen making machine.
Preferably, an adsorption drying layer is arranged on the inclined inner wall at the bottom of the shell, the adsorption drying layer comprises a fixed net and a plurality of adsorption drying fillers, the adsorption drying fillers are shaped conical sheets, and the adsorption drying fillers are polymer membrane filter screens and fine pore silica gel which are orderly staggered; and a plurality of polymer membrane filter screens and pore silica gel connect gradually in the fixed network and form cone-shaped barrel structure, be convenient for fully contact with nitrogen gas.
Preferably, a collecting box is arranged at the bottom of the shell, and an exhaust valve is arranged at one side of the collecting box.
Compared with the prior art, the utility model has the following beneficial effects:
(1) According to the utility model, the gas-liquid separator comprising the shell, the condensing pipe, the first spiral pipe, the second spiral pipe and the communicating pipe is arranged, so that the mixed gas can move along a spiral travel route, the travel route is longer, the contact area between water molecules in the gas and the condensing pipe, the first spiral pipe and the second spiral pipe is larger, the condensing speed of the water molecules is improved, and the drying efficiency of nitrogen is further improved;
(2) According to the utility model, the adsorption drying layer is arranged in the shell, so that nitrogen can be further purified, the purity of the nitrogen is improved, and condensed water can be absorbed;
(3) According to the utility model, the collecting box is arranged at the bottom of the shell, and the exhaust valve is arranged at one side of the collecting box, so that the air in the shell can be conveniently exhausted, and condensed water can be discharged out of the collecting box.
Drawings
FIG. 1 is a schematic diagram of a drying device of a nitrogen making system according to the present utility model;
FIG. 2 is a schematic diagram of the gas-liquid separator in the drying apparatus of the nitrogen making system shown in FIG. 1;
FIG. 3 is a schematic view of a partial cross-sectional structure of a gas-liquid separator in the drying apparatus of the nitrogen making system shown in FIG. 1;
FIG. 4 is a schematic view of a partial cross-sectional structure of a gas-liquid separator in the drying apparatus of the nitrogen making system shown in FIG. 1;
FIG. 5 is a schematic view showing the structure of a first spiral pipe in the drying apparatus of the nitrogen making system shown in FIG. 1;
FIG. 6 is a schematic view showing the structure of a second spiral pipe in the drying apparatus of the nitrogen making system shown in FIG. 1.
Wherein, the names corresponding to the reference numerals are: 1-air compressor, 2-nitrogen making machine, 3-condenser, 4-liquid nitrogen storage tank, 5-gas-liquid separator, 6-shell, 7-condenser pipe, 8-first spiral pipe, 9-second spiral pipe, 10-drain pipe, 11-feed liquor pipe, 12-adsorption drying layer, 13-intake pipe, 14-collecting box, 15-discharge valve, 16-communicating pipe.
Detailed Description
The utility model will be further illustrated by the following description and examples, which include but are not limited to the following examples.
Example 1:
as shown in fig. 1 to 6, the drying device for a nitrogen making system provided by the utility model comprises: the nitrogen generator comprises an air compressor 1, a nitrogen generator 2, a condenser 3, a liquid nitrogen storage tank 4 and a gas-liquid separator 5, wherein the gas-liquid separator 5 is arranged between the nitrogen generator 2 and the condenser 3, the air compressor 1 is connected with the nitrogen generator 2 through a pipeline, and the condenser 3 is connected with the liquid nitrogen storage tank 4 through a three-way pipe; the gas-liquid separator 5 comprises a shell 6 and a condensing tube 7 arranged in the shell 6, the bottom end of the condensing tube 7 is opened, the top end of the condensing tube 7 extends out of the shell 6 and is connected with the condenser 3, a first spiral tube 8 is arranged between the shell 6 and the condensing tube 7, a spiral air flow inlet channel is formed among the shell 6, the condensing tube 7 and the first spiral tube 8, a second spiral tube 9 is arranged in the condensing tube 7, a spiral air flow outlet channel is formed between the condensing tube 7 and the second spiral tube 9, the first spiral tube 8 is connected with the second spiral tube 9 through a communicating tube 16, the first spiral tube 8 is communicated with the inside of the second spiral tube 9, a liquid outlet tube 10 is arranged at the bottom end of the first spiral tube 8 and is connected with the condenser 3, the bottom end of the second spiral tube 9 is connected with a three-way pipe at the outlet end of the condenser 3 through a liquid inlet tube 11, the liquid inlet tube 11 is connected with the three-way pipe at the outlet end of the condenser 3, an air inlet pipe 13 is arranged on one side of the shell 6, the air inlet pipe 13 is connected with an outlet of the nitrogen making machine 2, when the device is used, air is compressed by the air compressor 1 and enters the nitrogen making machine 2 to make nitrogen, the nitrogen making machine 2 can adopt molecular sieves or membrane separation technology to separate nitrogen from other gas substances, the purity of the separated nitrogen can reach more than 90%, the gas which is mainly nitrogen and comes out of the nitrogen making machine 2 enters the air inlet pipe 13 of the gas-liquid separator 5 to enter the shell 6, then enters a channel from the top of the shell 6 to enter the bottom of the shell 6, then enters the top of the condensing pipe 7 along the channel of the spiral air flow to finally enter the condenser 3 to be condensed, at the same time, the nitrogen is condensed in the condenser 3 to form condensate, part of the condensate enters the liquid nitrogen storage tank 4 to be stored, part condensate passes through feed liquor pipe 11 and gets into in the second spiral pipe 9 to flow into first spiral pipe 8 through communicating pipe 16, flow back to the entry end of condenser 3 through drain pipe 10 at last, condense once more, through the effect of condensate, make the interior hydrone condensation of the mixed gas through first spiral pipe 8 and second spiral pipe 9, and then dry nitrogen gas, the air current passageway of spiral is bigger with the contact surface of hydrone, better to the condensation effect of hydrone, is favorable to getting rid of the moisture in the nitrogen gas fast, and then improves nitrogen gas drying rate, improves nitrogen gas drying efficiency.
Through setting up the gas-liquid separator 5 including shell 6, condenser pipe 7, first spiral pipe 8, second spiral pipe 9, communicating pipe 16, make the mixed gas can remove along spiral route of marcing, the route of marcing is longer, makes the gaseous water molecule bigger with condenser pipe 7, first spiral pipe 8, the area of contact of second spiral pipe 9, improves the condensation velocity of hydrone, and then improves the drying efficiency of nitrogen gas.
Example 2:
as shown in fig. 4, an adsorption drying layer 12 is mounted on the inclined inner wall of the bottom of the housing 6, the adsorption drying layer 12 adopts a structure disclosed in CN212101997U, the adsorption drying layer 12 includes a fixed mesh and a plurality of adsorption drying fillers, the adsorption drying fillers are formed conical sheets, and the adsorption drying fillers are sequentially staggered with a polymer membrane filter screen and fine pore silica gel; and a plurality of polymer membrane filter screens and pore silica gel connect gradually in the fixed network and form cone-shaped barrel structure, be convenient for fully contact with nitrogen gas, during the use, oxygen molecule and the comdenstion water that falls in the mist can be absorbed by adsorption drying layer 12, and then makes nitrogen gas purer.
By installing the adsorption drying layer 12 in the housing 6, nitrogen can be further purified, the purity of nitrogen can be improved, and condensed water can be absorbed.
Example 3:
as shown in fig. 2, the bottom of the housing 6 is provided with a collecting tank 14, one side of the collecting tank 14 is provided with an exhaust valve 15, when in use, unabsorbed liquid water falls into the collecting tank 14 and is concentrated and can be discharged, so that too much condensed water in the housing 6 is prevented, the purification of nitrogen is influenced, and the exhaust valve 15 is used for exhausting gas in the housing.
By arranging the collecting box 14 at the bottom of the shell 6, and arranging the exhaust valve 15 at one side of the collecting box 14, the air in the shell can be conveniently exhausted, and condensed water can be discharged out of the collecting box 14.
During the use, the air compresses through air compressor 1 and gets into nitrogen making machine 2 and prepares nitrogen, nitrogen making machine 2 can adopt molecular sieve, also can adopt membrane separation technique to separate nitrogen gas and other gaseous matter, nitrogen purity after the separation can reach more than 90%, the intake pipe 13 that comes out from nitrogen making machine 2 and takes the nitrogen gas as the main gas to get into in the shell 6 of gas-liquid separator 5, then get into the passageway from spiral air current, get into the bottom of shell 6 from the top of shell 6, then get into the top of condenser pipe 7 along spiral air current discharge passageway, and finally get into condenser 3 and condense, at the same time, the nitrogen gas condenses in condenser 3 and forms the condensate, part condensate gets into liquid nitrogen holding vessel 4 and stores, part condensate passes through intake pipe 11 and gets into in the second spiral pipe 9, and flow back to the entry end of condenser 3 through communicating pipe 16, condensate again, through the effect of condensate, make the interior water molecule condensation of the mixed gas through first 8 and second spiral pipe 9, and then dry nitrogen gas, the flat air current is better with the water molecule's of spiral face, the drying efficiency is better, and the nitrogen gas is more convenient for the drying the water molecule, and the drying efficiency is improved.
The above embodiment is only one of the preferred embodiments of the present utility model, and should not be used to limit the scope of the present utility model, but all the insubstantial modifications or color changes made in the main design concept and spirit of the present utility model are still consistent with the present utility model, and all the technical problems to be solved are included in the scope of the present utility model.
Claims (6)
1. Nitrogen production system drying device, its characterized in that includes:
an air compressor, a nitrogen generator, a condenser, a liquid nitrogen storage tank and a gas-liquid separator;
the gas-liquid separator is arranged between the nitrogen generator and the condenser;
the air compressor is connected with the nitrogen making machine;
the condenser is connected with the liquid nitrogen storage tank;
the gas-liquid separator comprises a shell and a condensing pipe arranged in the shell, wherein the top end of the condensing pipe extends out of the shell and is connected with the condenser, a first spiral pipe is arranged between the shell and the condensing pipe, a spiral air flow inlet channel is formed between the shell and the first spiral pipe, a second spiral pipe is arranged in the condensing pipe, a spiral air flow outlet channel is formed between the condensing pipe and the second spiral pipe, and the first spiral pipe is connected with the second spiral pipe through a communicating pipe.
2. The nitrogen generation system drying apparatus of claim 1, wherein a drain pipe is installed at a bottom end of the first spiral pipe, and the drain pipe is connected with the condenser.
3. The nitrogen making system drying apparatus according to claim 1, wherein a liquid inlet pipe is installed at a bottom end of said second spiral pipe, said liquid inlet pipe being connected to said condenser.
4. The nitrogen making system drying apparatus according to claim 1, wherein an air intake pipe is installed at one side of the housing, and the air intake pipe is connected with the nitrogen making machine.
5. The nitrogen making system drying apparatus according to claim 1, wherein a collection box is installed at the bottom of said housing, and an exhaust valve is installed at one side of said collection box.
6. The nitrogen making system drying apparatus according to claim 1, wherein an adsorption drying layer is mounted on an inner wall of said housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321679283.8U CN220380081U (en) | 2023-06-29 | 2023-06-29 | Drying device of nitrogen making system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321679283.8U CN220380081U (en) | 2023-06-29 | 2023-06-29 | Drying device of nitrogen making system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220380081U true CN220380081U (en) | 2024-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321679283.8U Active CN220380081U (en) | 2023-06-29 | 2023-06-29 | Drying device of nitrogen making system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220380081U (en) |
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2023
- 2023-06-29 CN CN202321679283.8U patent/CN220380081U/en active Active
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