Adsorption capacity enhanced adsorbent nitrogen making equipment
By employing a replaceable layer molecular sieve structure in the nitrogen generation equipment, and utilizing spiral lifting rollers and pipes to achieve interlayer replacement of the molecular sieve, the problem of low molecular sieve utilization rate is solved, and the adsorption capacity and production efficiency are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-24
AI Technical Summary
The low utilization rate of molecular sieves in existing nitrogen production equipment leads to insufficient adsorption capacity, and frequent replacement or regeneration of adsorbents affects nitrogen production efficiency and cost.
A molecular sieve structure with interchangeable layers is adopted, and interlayer replacement of the molecular sieve is achieved through spiral lifting rollers and pipes, thereby improving the utilization rate and adsorption capacity of the molecular sieve.
This improved the utilization rate of molecular sieves, reduced waste and regeneration frequency, and enhanced the production efficiency and adsorption capacity of nitrogen generation equipment.
Smart Images
Figure CN224024631U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of nitrogen making equipment, specifically is an adsorption capacity enhanced adsorbent nitrogen making equipment. BACKGROUND
[0002] The adsorption nitrogen making equipment is a kind of efficient equipment separated from nitrogen in air by adsorption technology, is based on the selective adsorption characteristics of molecular sieve and other adsorbents to gas molecules to make nitrogen, and the adsorption capacity of the adsorption nitrogen making equipment refers to the maximum amount of gas that can be adsorbed by adsorbent (such as molecular sieve) under certain conditions, which is an important indicator to measure the performance of adsorbent, directly affects the nitrogen making efficiency and operating cost of equipment
[0003] In the adsorption tower of the existing nitrogen making machine, the molecular sieve is generally directly filled in the adsorption tower with high stacking thickness, one end is connected with high-pressure air, so that high-pressure air passes through the molecular sieve for adsorption, although the adsorption effect is good, but the high-pressure gas concentration just contacts the molecular sieve is high, the molecular sieve adsorption capacity is large, as the gas passes through the molecular sieve and is adsorbed, the air concentration gradually reduces, so that the adsorption capacity of the molecular sieve behind is reduced, therefore, when the front-end molecular sieve is saturated, there is still more adsorption capacity at the rear end, in order to ensure the adsorption effect, the molecular sieve needs to be replaced regularly or the adsorbent regeneration operation, when there is still more adsorption capacity in the rear-end molecular sieve, the replacement will waste a certain amount of molecular sieve, and the number of adsorbent regeneration will be more, which affects the nitrogen making efficiency. CONTENT OF UTILITY MODEL
[0004] The utility model provides a kind of adsorption capacity enhanced adsorbent nitrogen making equipment, with the advantage that different levels of molecular sieve can be replaced, improve molecular sieve utilization to increase the adsorption capacity, to solve the problem of the low utilization of existing molecular sieve, the overall adsorption capacity is low and is wasted.
[0005] The utility model provides the following technical scheme: a kind of adsorption capacity enhanced adsorbent nitrogen making equipment, including installation chassis, the installation chassis top is equipped with adsorption tank, still including first replacement mechanism and second replacement mechanism, wherein:
[0006] The adsorption tank is equipped with upper adsorption layer, middle adsorption layer and lower adsorption layer which are vertically distributed and separated from each other, and the middle adsorption layer is located between the upper adsorption layer and the lower adsorption layer.
[0007] The first replacement mechanism includes a conveying cylinder mounted on one side of the adsorption tank, the conveying cylinder is connected with the upper adsorption layer and the lower adsorption layer through pipelines at both ends, and a spiral lifting roller for lifting the molecular sieve is rotatably connected in the conveying cylinder.
[0008] The second replacement mechanism includes a connecting channel mounted on the other side of the adsorption tank, and the connecting channel is connected with the upper adsorption layer and the lower adsorption layer through pipelines.
[0009] As the preferred technical scheme of the utility model, the upper adsorption layer, the middle adsorption layer and the lower adsorption layer bottom are equipped with the first silk screen frame, the third silk screen frame and the second silk screen frame respectively, and the upper adsorption layer, the middle adsorption layer and the lower adsorption layer are separated by the third silk screen frame and the second silk screen frame.
[0010] As the preferred technical scheme of the utility model, the first replacement mechanism further includes the first valve pipe and the second valve pipe, the first valve pipe is installed at the top of the upper adsorption layer and is communicated with the upper adsorption layer, the second valve pipe is installed at the bottom of the lower adsorption layer and is communicated with the lower adsorption layer, and the bottom of the mounting base is installed with a driving motor, and the output end of the driving motor extends into the conveying cylinder and is connected with the spiral lifting roller.
[0011] As the preferred technical scheme of the utility model, the second replacement mechanism further includes the third valve pipe and the fourth valve pipe, the third valve pipe is installed at the lower part of the upper adsorption layer and is communicated with the upper adsorption layer, and the fourth valve pipe is installed at the top of the lower adsorption layer and is communicated with the lower adsorption layer.
[0012] As the preferred technical scheme of the utility model, the upper and lower ends of the adsorption tank are respectively installed with an air inlet pipe and a nitrogen conveying pipe, and the middle adsorption layer is installed with a filler pipe and a discharge pipe.
[0013] As the preferred technical scheme of the utility model, the first silk screen frame, the second silk screen frame and the third silk screen frame are all downwardly inclined, and the second valve pipe, the fourth valve pipe and the discharge pipe are also inclined and correspond to the lowest parts of the first silk screen frame, the third silk screen frame and the second silk screen frame respectively.
[0014] As the preferred technical scheme of the utility model, the bottom of the adsorption tank is installed with an air jet disc connected with the air inlet pipe, and the upper end of the air jet disc is installed with a plurality of air jet nozzles uniformly arranged in a circular shape.
[0015] Compared with the prior art, the utility model provides an adsorption capacity enhanced adsorbent nitrogen making equipment, has the following beneficial effects:
[0016] The utility model divides the distribution space of molecular sieve in the adsorption tank into three parts, after the molecular sieve is used for a period of time, the lower layer molecular sieve is conveyed to the upper layer through the pipeline in the first replacement mechanism and the spiral lifting roller, and the upper layer molecular sieve is conveyed to the lower layer through the pipeline and the connecting channel, so that the lower layer saturated molecular sieve is replaced by the lower layer adsorption capacity larger molecular sieve and the upper layer adsorption capacity larger molecular sieve, the utilization rate of the molecular sieve is improved, the overall adsorption capacity of the molecular sieve is improved, the waste and the regeneration frequency are reduced, and the production efficiency is improved. ACCURACY
[0017] Figure 1 It is overall structure schematic view of the utility model.
[0018] Figure 2 It is the first replacement mechanism structure schematic view of the utility model;
[0019] Figure 3 It is the second replacement mechanism structure schematic view of the utility model;
[0020]
[0003] It is the upper adsorption layer and the lower adsorption layer structure schematic view in the adsorption tank of the utility model;
[0021] Figure 5 It is the middle adsorption layer structure schematic view in the adsorption tank of the utility model.
[0022] In the drawing: 1, mounting chassis;2, adsorption tank;21, nitrogen delivery pipe;22, first silk screen frame;221, upper adsorption layer;23, second silk screen frame;231, lower adsorption layer;24, third silk screen frame;241, middle adsorption layer;25, air jet disc;26, air jet nozzle;27, air inlet pipe;28, filler pipe;29, discharge pipe;3, first replacement mechanism;31, first valve pipe;32, delivery cylinder;33, spiral lifting roller;34, second valve pipe;35, drive motor;4, second replacement mechanism;41, third valve pipe;42, connecting passage;43, fourth valve pipe. DETAILED DESCRIPTION
[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model. Embodiment one
[0024] Please refer to the attached Figures 1-5 An adsorption capacity enhanced adsorbent nitrogen making equipment, including mounting chassis 1, the top of mounting chassis 1 is equipped with adsorption tank 2, still including first replacement mechanism 3 and second replacement mechanism 4, wherein:
[0025] Adsorption tank 2 is equipped with vertically distributed and mutually separated upper adsorption layer 221, middle adsorption layer 241 and lower adsorption layer 231, and the middle adsorption layer 241 is located between the upper adsorption layer 221 and the lower adsorption layer 231;
[0026] First replacement mechanism 3 includes delivery cylinder 32 installed on one side of adsorption tank 2, and the upper and lower ends of delivery cylinder 32 are connected with upper adsorption layer 221 and lower adsorption layer 231 respectively through pipe, and spiral lifting roller 33 for lifting molecular sieve is rotatably connected in delivery cylinder 32;
[0027] The second displacement mechanism 4 comprises a connecting channel 42 installed on the other side of the adsorption tank 2, which is connected with the upper adsorption layer 221 and the lower adsorption layer 231 through pipes respectively.
[0028] Please refer to the attached Figure 4 , Figure 5 The upper adsorption layer 221, the middle adsorption layer 241 and the lower adsorption layer 231 are respectively installed with the first screen frame 22, the third screen frame 24 and the second screen frame 23, and the upper adsorption layer 221, the middle adsorption layer 241 and the lower adsorption layer 231 are separated by the third screen frame 24 and the second screen frame 23.
[0029] Please refer to the attached Figure 2 The first displacement mechanism 3 further comprises a first valve pipe 31 and a second valve pipe 34, the first valve pipe 31 is installed on the top of the upper adsorption layer 221 and communicates with the upper adsorption layer 221, and the second valve pipe 34 is installed on the bottom of the lower adsorption layer 231 and communicates with the lower adsorption layer 231. The bottom bracket 1 is installed with a driving motor 35, the output of which extends into the conveying cylinder 32 and is connected with the spiral lifting roller 33.
[0030] In this embodiment, the driving motor 35 drives the spiral lifting roller 33 to rotate to lift the molecular sieve upward and transport it into the upper adsorption layer 221 through the first valve pipe 31,
[0031] Please refer to the attached Figure 3 The second displacement mechanism 4 further comprises a third valve pipe 41 and a fourth valve pipe 43, the third valve pipe 41 is installed on the lower part of the upper adsorption layer 221 and communicates with the upper adsorption layer 221, and the fourth valve pipe 43 is installed on the top of the lower adsorption layer 231 and communicates with the lower adsorption layer 231.
[0032] In this embodiment, the valve on the third valve pipe 41 is opened first, at this time part of the molecular sieve in the upper adsorption layer 221 enters into the connecting channel 42, then the valve on the fourth valve pipe 43 is opened, so that the molecular sieve in the connecting channel 42 enters into the lower adsorption layer 231.
[0033] Please refer to the attached Figure 4 The upper and lower ends of the adsorption tank 2 are respectively installed with an air inlet pipe 27 and a nitrogen conveying pipe 21, the middle adsorption layer 241 is installed with a filler pipe 28 and a discharge pipe 29, and the filler pipe 28 and the discharge pipe 29 can be connected with valves. Example two
[0034] Based on the above embodiment one, please refer to the attached Figure 4 、 Figure 5, the first screen frame 22, the second screen frame 23 and the third screen frame 24 are all inclined downward, the second valve pipe 34, the fourth valve pipe 43 and the discharge pipe 29 are also inclined and correspond to the lowest parts of the first screen frame 22, the third screen frame 24 and the second screen frame 23 respectively.
[0035] Further, the air injection disc 25 connected with the air inlet pipe 27 is arranged at the bottom of the adsorption tank 2, and a plurality of air injection nozzles 26 in a circular arrangement are arranged on the upper end of the air injection disc 25.
[0036] In the embodiment, the first screen frame 22, the second screen frame 23 and the third screen frame 24 are inclined, so that the molecular sieves in the upper adsorption layer 221, the middle adsorption layer 241 and the lower adsorption layer 231 can be quickly discharged, the plurality of air injection nozzles 26 on the air injection disc 25 are arranged in a circular arrangement, so that the entering air can be uniformly discharged to the molecular sieves for adsorption, and the adsorption effect is improved.
[0037] The working principle and the use process of the utility model are as follows: when carrying out pressure swing adsorption operation, the compressed high-pressure air enters the adsorption tank 2 through the air inlet pipe 27 and is uniformly sprayed upward through the plurality of air injection nozzles 26, at this time, the air passes through the lower adsorption layer 231, the middle adsorption layer 241 and the upper adsorption layer 221 in turn, the lower adsorption layer 231, the middle adsorption layer 241 and the upper adsorption layer 221 adsorb oxygen and other components in the air, the remaining nitrogen is discharged and transported through the nitrogen conveying pipe 21, the air concentration in the lower adsorption layer 231 in the adsorption tank 2 is the highest, the adsorption amount of the molecular sieves in the lower adsorption layer 231 is larger, the air concentration in the middle adsorption layer 241 after adsorption is smaller, the air concentration in the upper adsorption layer 221 after the molecular sieves in the middle adsorption layer 241 adsorb is the lowest, and the adsorption amount of the molecular sieves in the upper adsorption layer 221 is smaller;
[0038] After a certain time of adsorption operation, the valve on the third valve pipe 41 is opened first, at this time, part of the molecular sieves in the upper adsorption layer 221 enter the connecting channel 42, then the valves on the first valve pipe 31 and the second valve pipe 34 are opened and the driving motor 35 is started, the molecular sieves in the lower adsorption layer 231 enter the conveying cylinder 32, the driving motor 35 drives the spiral lifting roller 33 to rotate, the molecular sieves are lifted upward and conveyed to the upper adsorption layer 221 through the first valve pipe 31, at this time, the valve on the fourth valve pipe 43 is opened, so that the molecular sieves in the connecting channel 42 enter the lower adsorption layer 231, and the molecular sieves in the upper and lower adsorption layers 231 are replaced, after the replacement is completed, the molecular sieves in the upper adsorption layer 221 still have a larger capacity, and the molecular sieves in the lower adsorption layer 231 can adsorb the high-concentration air, so that the molecular sieves are fully utilized, and the regeneration and replacement of the molecular sieves are delayed.
Claims
1. A nitrogen production apparatus using an adsorbent with enhanced adsorption capacity, comprising a mounting chassis (1) having an adsorption tank (2) mounted on the top of the mounting chassis (1), characterized in that, Also include the first replacement mechanism (3) and the second replacement mechanism (4), wherein: The adsorption tank (2) is provided with upper adsorption layer (221), middle adsorption layer (241) and lower adsorption layer (231) which are vertically distributed and separated from each other, the middle adsorption layer (241) is located between the upper adsorption layer (221) and the lower adsorption layer (231); The first replacement mechanism (3) includes a conveying cylinder (32) mounted on one side of the adsorption tank (2), the upper and lower ends of the conveying cylinder (32) are connected with the upper adsorption layer (221) and the lower adsorption layer (231) through pipes respectively, and the conveying cylinder (32) is rotatably connected with a screw lifting roller (33) for lifting molecular sieve; The second replacement mechanism (4) includes a connecting channel (42) mounted on the other side of the adsorption tank (2), and the connecting channel (42) is connected with the upper adsorption layer (221) and the lower adsorption layer (231) through pipes respectively.
2. The enhanced adsorbent capacity adsorbent-based nitrogen generation plant of claim 1, wherein: The bottom of the upper adsorption layer (221), the middle adsorption layer (241) and the lower adsorption layer (231) is respectively provided with a first screen frame (22), a third screen frame (24) and a second screen frame (23), and the upper adsorption layer (221), the middle adsorption layer (241) and the lower adsorption layer (231) are separated by the third screen frame (24) and the second screen frame (23).
3. The enhanced adsorbent capacity adsorbent-based nitrogen generation plant of claim 2, wherein: The first replacement mechanism (3) further includes a first valve pipe (31) and a second valve pipe (34), the first valve pipe (31) is mounted at the top of the upper adsorption layer (221) and communicates with the upper adsorption layer (221), the second valve pipe (34) is mounted at the bottom of the lower adsorption layer (231) and communicates with the lower adsorption layer (231), and a drive motor (35) is mounted at the bottom of the mounting base (1) and extends into the conveying cylinder (32) and is connected with the screw lifting roller (33).
4. The enhanced adsorbent capacity adsorbent-based nitrogen generation plant of claim 3, wherein: The second replacement mechanism (4) further includes a third valve pipe (41) and a fourth valve pipe (43), the third valve pipe (41) is mounted at the lower part of the upper adsorption layer (221) and communicates with the upper adsorption layer (221), and the fourth valve pipe (43) is mounted at the top of the lower adsorption layer (231) and communicates with the lower adsorption layer (231).
5. A PSA nitrogen generation plant of the enhanced adsorbent capacity type according to claim 4, characterized in that: The upper and lower ends of the adsorption tank (2) are respectively provided with an air inlet pipe (27) and a nitrogen conveying pipe (21), and the middle adsorption layer (241) is provided with a filler pipe (28) and a discharge pipe (29).
6. A PSA nitrogen generation plant of the enhanced adsorbent capacity type according to claim 5, characterized in that: The first screen frame (22), the second screen frame (23) and the third screen frame (24) are all inclined downward, and the second valve pipe (34), the fourth valve pipe (43) and the discharge pipe (29) are also inclined and correspond to the lowest parts of the first screen frame (22), the third screen frame (24) and the second screen frame (23) respectively.
7. The enhanced adsorbent capacity adsorbent nitrogen generation plant of claim 1, wherein: The bottom of the adsorption tank (2) is provided with a jet disc (25) connected with the air inlet pipe (27), and a plurality of jet nozzles (26) are uniformly arranged in a circular shape at the upper end of the jet disc (25).