CN211635883U - Nitrogen making adsorption tower - Google Patents
Nitrogen making adsorption tower Download PDFInfo
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- CN211635883U CN211635883U CN201922339736.2U CN201922339736U CN211635883U CN 211635883 U CN211635883 U CN 211635883U CN 201922339736 U CN201922339736 U CN 201922339736U CN 211635883 U CN211635883 U CN 211635883U
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- adsorption
- tower body
- nitrogen
- air
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 70
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 36
- 230000009467 reduction Effects 0.000 claims abstract description 24
- 239000002808 molecular sieve Substances 0.000 claims abstract description 20
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000005192 partition Methods 0.000 claims abstract description 7
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 230000000087 stabilizing effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 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
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000008569 process 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
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- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model belongs to the nitrogen production field, and particularly discloses a nitrogen production adsorption tower, compressed air enters a slow flow area from a first air inlet, a speed reduction plate component in the slow flow area can play the role of reducing speed and stabilizing flow for the compressed air, and the slow flow plate component is used for reducing the speed and stabilizing the flow of the compressed air, so that the density of the compressed air is uniform; the compressed air with uniform air flow density enters the adsorption cylinder through the second air inlet on the first partition plate, oxygen in the compressed air is absorbed by the molecular sieve in the adsorption cylinder to obtain nitrogen, the nitrogen enters the area between the inner wall of the tower body and the outer wall of the adsorption cylinder through the air outlet pipe, and the oxygen is absorbed again by the molecular sieve in the area, so that the purity of the nitrogen is improved. The utility model has the advantages of simple structure and reasonable design, can reduce, stabilize compressed air's velocity of flow, make compressed air and molecular sieve fully contact, make the molecular sieve can absorb nitrogen gas fully, improve the purity of nitrogen gas. The utility model discloses it adsorbs evenly, adsorption efficiency is high to have, can obtain the purity of nitrogen gas.
Description
Technical Field
The utility model belongs to system nitrogen field, in particular to system nitrogen adsorption tower.
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. Nitrogen generators industrially used can be classified into three types according to the classification method, i.e., a cryogenic air separation method, a molecular sieve air separation method (PSA), and a membrane air separation method. The nitrogen making machine is nitrogen equipment designed and manufactured according to pressure swing adsorption technology. 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 prepare 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.
However, in the process of obtaining nitrogen by adsorbing oxygen in the existing adsorption tower, the compressed air flows through the tower body at a high speed and the gas flow rate is not uniform, so that the contact time between the compressed air and the molecular sieve is different, and the purity of the obtained nitrogen is not uniform.
SUMMERY OF THE UTILITY MODEL
The utility model provides a nitrogen making adsorption tower adsorbs evenly, adsorption efficiency is high, can obtain the purity homogeneous of nitrogen gas.
The technical scheme of the utility model is realized like this:
a nitrogen-producing adsorption column comprising:
a tower body;
the bottom of the tower body is provided with a first air inlet, and the top of the tower body is provided with a first air outlet; a first clapboard is horizontally arranged in the tower body, and divides the space of the tower body into an upper area, a lower area, an adsorption area and a slow flow area; the adsorption area is arranged above the slow flow area;
a second air inlet is arranged on the clapboard; an adsorption cylinder is arranged in the adsorption area, one end of the adsorption cylinder is fixed on the partition plate, and the other end of the adsorption cylinder is a closed end; a third air inlet is formed in the bottom of the adsorption cylinder and communicated with the second air inlet; a second air outlet and a fourth air inlet are formed in the side wall of the adsorption cylinder; the second air outlet is connected with an air outlet pipe; the side wall of the tower body is provided with a first inlet and a second inlet; the air outlet pipe passes through the first inlet and the second inlet and is communicated with the fourth air inlet;
a plurality of filter screens are horizontally arranged in the adsorption area from top to bottom, one end of each filter screen is fixedly connected with the outer wall of the adsorption cylinder, and the other end of each filter screen is fixedly connected with the inner wall of the tower body; molecular sieves are filled between the filter screens; the third air inlet is arranged on the filter screen at the bottommost layer and the adsorption cylinder between the filter screens adjacent to the filter screen;
the slow flow area comprises a slow flow plate component and a speed reducing plate component from top to bottom.
Furthermore, the speed reduction plate assembly comprises a plurality of first speed reduction plates and a plurality of second speed reduction plates; the first speed reducing plates are arranged on one side of the tower body, and the second speed reducing plates are arranged on the other side of the tower body;
keep away from a plurality of first air brake, a plurality of second air brake one end in the tower body and all suspend in the tower body.
Furthermore, one end of the first speed reducing plate far away from the inside of the tower body is staggered with one end of the second speed reducing plate far away from the inner wall of the tower body.
Furthermore, the flow slowing plate component comprises a plurality of flow slowing plates from top to bottom, a plurality of vent holes are formed in the flow slowing plates, and the aperture of the vent holes in the flow equalizing plates is gradually increased from the center of a circle to the edge.
Further, a second partition plate is arranged between the baffle plate on the uppermost layer and the second air inlet.
Further, the second baffle is an arc-shaped baffle which is concave upwards.
The utility model provides a nitrogen-making adsorption tower, compressed air enters a slow flow area from a first air inlet, a speed reduction plate component in the slow flow area can play the role of reducing speed and stabilizing flow for the compressed air, and the slow flow plate component is used for reducing the speed and stabilizing the compressed air so as to ensure that the density of the compressed air is uniform; the compressed air with uniform air flow density enters the adsorption cylinder through the second air inlet on the first partition plate, oxygen in the compressed air is absorbed by the molecular sieve in the adsorption cylinder to obtain nitrogen, the nitrogen enters the area between the inner wall of the tower body and the outer wall of the adsorption cylinder through the air outlet pipe, and the oxygen is absorbed again by the molecular sieve in the area, so that the purity of the nitrogen is improved. The utility model has the advantages of simple structure and reasonable design, can reduce, stabilize compressed air's velocity of flow, make compressed air and molecular sieve fully contact, make the molecular sieve can absorb nitrogen gas fully, improve the purity of nitrogen gas. The utility model discloses it adsorbs evenly, adsorption efficiency is high to have, can obtain the purity homogeneous of nitrogen gas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an adsorption tower for nitrogen production provided by the present invention;
fig. 2 is a schematic structural view of the buffer plate in fig. 1.
In the figure:
1. a tower body; 2. a first separator; 3. an adsorption cylinder; 4. filtering with a screen; 5. a first speed reduction plate; 6. a second speed reduction plate; 7. a buffer plate; 8. a vent hole; 9. a second separator; 10. and an air outlet pipe.
Detailed Description
The following describes the present invention with reference to the accompanying 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 related to 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" and "lower" are used for the purpose of describing the structure of the present invention based on the accompanying drawings 1-2, and are only used for the convenience of describing the present invention, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore 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 relation to the present scheme in specific terms according to the general idea of the present invention.
As shown in fig. 1-2, a nitrogen production adsorption tower includes:
a tower body 1;
the bottom of the tower body 1 is provided with a first air inlet, and the top of the tower body is provided with a first air outlet; a first clapboard 2 is horizontally arranged in the tower body 1, and the first clapboard 2 divides the space of the tower body 1 into an upper area, a lower area, an adsorption area and a slow flow area; the adsorption area is arranged above the slow flow area;
a second air inlet is arranged on the clapboard; an adsorption cylinder 3 is arranged in the adsorption area, one end of the adsorption cylinder 3 is fixed on the partition plate, and the other end is a closed end; a third air inlet is formed in the bottom of the adsorption cylinder 3 and communicated with the second air inlet; a second air outlet and a fourth air inlet are arranged on the side wall of the adsorption cylinder 3; the second air outlet is connected with an air outlet pipe 10; the side wall of the tower body 1 is provided with a first inlet and a second inlet; the air outlet pipe 10 penetrates through the first inlet and the second inlet and is communicated with the fourth air inlet;
a plurality of filter screens 4 are horizontally arranged in the adsorption area from top to bottom, one end of each filter screen 4 is fixedly connected with the outer wall of the adsorption cylinder 3, and the other end of each filter screen 4 is fixedly connected with the inner wall of the tower body 1; molecular sieves are filled between the filter screens 4; the third air inlet is arranged on the adsorption cylinder 3 between the bottommost filter screen 4 and the adjacent filter screen 4;
the slow flow area comprises a slow flow plate 7 assembly and a slow flow plate assembly from top to bottom.
Further, the speed reduction plate assembly comprises a plurality of first speed reduction plates 5 and a plurality of second speed reduction plates 6; the first speed reducing plates 5 are arranged on one side of the tower body 1, and the second speed reducing plates 6 are arranged on the other side of the tower body 1;
keep away from a plurality of first speed reduction plates 5 in the tower body 1, a plurality of second speed reduction plates 6 one end all suspend in the tower body 1.
The compressed air enters the slow flow area from the first air inlet, the speed reduction plate assembly in the slow flow area can play a role in reducing speed and stabilizing flow for the compressed air, and the slow flow plate 7 assembly is used for reducing speed and stabilizing flow of the compressed air, so that the density of the compressed air can be uniform; the even compressed air of air current density enters into adsorption cylinder 3 by the second air inlet on the first baffle 2 again, absorbs the oxygen in the compressed air by the molecular sieve in the adsorption cylinder 3, obtains nitrogen gas, and nitrogen gas enters into the region between 1 inner wall of tower body and the 3 outer walls of adsorption cylinder from outlet duct 10 again, absorbs oxygen gas again by the molecular sieve in this region, improves the purity of nitrogen gas. The utility model has the advantages of simple structure and reasonable design, can reduce, stabilize compressed air's velocity of flow, make compressed air and molecular sieve fully contact, make the molecular sieve can absorb nitrogen gas fully, improve the purity homogeneous of nitrogen gas.
It should be noted that the arrangement of the adsorption cylinder 3 and the air outlet pipe 10 prolongs the roundabout and time of the compressed air in the adsorption region, which is beneficial for the molecular sieve in the adsorption region to fully adsorb the oxygen in the compressed air, thereby enabling the obtained nitrogen to have high purity. The adsorption zone is horizontally provided with a plurality of filter screens 4 from top to bottom, and the filter screens 4 are used for removing impurities in the compressed air and improving the purity of nitrogen.
In the present embodiment, the speed reduction plate assembly includes a plurality of first speed reduction plates 5 and a plurality of second speed reduction plates 6; the first speed reducing plates 5 are arranged on one side of the tower body 1, and the second speed reducing plates 6 are arranged on the other side of the tower body 1; keep away from a plurality of first speed reduction plates 5 in the tower body 1, a plurality of second speed reduction plates 6 one end all suspend in the tower body 1. As described above, the first speed reduction plate 5 and the second speed reduction plate 6 can block the compressed air to perform the speed reduction function.
It should be noted that, in order to further reduce and stabilize the flow velocity of the compressed air, one end of the first decelerating plate 5 far away from the inside of the tower body 1 is staggered with one end of the second decelerating plate 6 far away from the inner wall of the tower body 1. As described above, the blocking of the compressed air can be increased.
In this embodiment, the baffle plate 7 assembly includes a plurality of baffle plates 7 from top to bottom, a plurality of vent holes 8 are provided on the baffle plate 7, and the aperture of the plurality of vent holes 8 gradually increases from the center to the edge. The aperture of the air holes 8 on the slow flow plate 7 is gradually enlarged from the center of a circle to the edge direction, so that the compressed air is gradually and uniformly distributed by the slow flow plates 7 in sequence, and the flow equalizing effect of the compressed air is further improved.
A second clapboard 9 is arranged between the upper-most slow flow plate 7 and the second air inlet. The second partition plate 9 can ensure that the compressed air can enter the adsorption area at a uniform speed, ensure that the contact time of the compressed air and the molecular sieve is the same, and ensure that the purity of the prepared nitrogen is consistent.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A nitrogen producing adsorption column, comprising:
a tower body;
the bottom of the tower body is provided with a first air inlet, and the top of the tower body is provided with a first air outlet; a first clapboard is horizontally arranged in the tower body, and divides the space of the tower body into an upper area, a lower area, an adsorption area and a slow flow area; the adsorption area is arranged above the slow flow area;
a second air inlet is arranged on the clapboard; an adsorption cylinder is arranged in the adsorption area, one end of the adsorption cylinder is fixed on the partition plate, and the other end of the adsorption cylinder is a closed end; a third air inlet is formed in the bottom of the adsorption cylinder and communicated with the second air inlet; a second air outlet and a fourth air inlet are formed in the side wall of the adsorption cylinder; the second air outlet is connected with an air outlet pipe; the side wall of the tower body is provided with a first inlet and a second inlet; the air outlet pipe passes through the first inlet and the second inlet and is communicated with the fourth air inlet;
a plurality of filter screens are horizontally arranged in the adsorption area from top to bottom, one end of each filter screen is fixedly connected with the outer wall of the adsorption cylinder, and the other end of each filter screen is fixedly connected with the inner wall of the tower body; molecular sieves are filled between the filter screens; the third air inlet is arranged on the filter screen at the bottommost layer and the adsorption cylinder between the filter screens adjacent to the filter screen;
the slow flow area comprises a slow flow plate component and a speed reducing plate component from top to bottom.
2. The nitrogen-producing adsorption column of claim 1, wherein the velocity reduction plate assembly comprises a plurality of first velocity reduction plates and a plurality of second velocity reduction plates; the first speed reducing plates are arranged on one side of the tower body, and the second speed reducing plates are arranged on the other side of the tower body;
keep away from a plurality of first air brake, a plurality of second air brake one end in the tower body and all suspend in the tower body.
3. The nitrogen-producing adsorption tower of claim 2, wherein one end of the first decelerating plate away from the tower body is staggered with one end of the second decelerating plate away from the inner wall of the tower body.
4. The nitrogen-producing adsorption tower of claim 1, wherein the baffle plate assembly comprises a plurality of baffle plates from top to bottom, the baffle plates are provided with a plurality of vent holes, and the aperture of the plurality of vent holes gradually increases from the center of the circle to the edge.
5. The nitrogen-producing adsorption column of claim 4, wherein a second baffle plate is disposed between the uppermost baffle plate and the second inlet.
6. The nitrogen-producing adsorption column of claim 5, wherein the second baffle is an upwardly concave curved baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922339736.2U CN211635883U (en) | 2019-12-24 | 2019-12-24 | Nitrogen making adsorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922339736.2U CN211635883U (en) | 2019-12-24 | 2019-12-24 | Nitrogen making adsorption tower |
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| Publication Number | Publication Date |
|---|---|
| CN211635883U true CN211635883U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922339736.2U Active CN211635883U (en) | 2019-12-24 | 2019-12-24 | Nitrogen making adsorption tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114146529A (en) * | 2021-11-16 | 2022-03-08 | 邓浩 | Activated carbon efficient purification equipment and purification method |
| CN114177741A (en) * | 2021-12-24 | 2022-03-15 | 昆山锦程气体设备有限公司 | Vacuum pressure swing absorber for VPSA oxygen generator |
-
2019
- 2019-12-24 CN CN201922339736.2U patent/CN211635883U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114146529A (en) * | 2021-11-16 | 2022-03-08 | 邓浩 | Activated carbon efficient purification equipment and purification method |
| CN114177741A (en) * | 2021-12-24 | 2022-03-15 | 昆山锦程气体设备有限公司 | Vacuum pressure swing absorber for VPSA oxygen generator |
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