CN215626809U

CN215626809U - Pressure swing adsorption nitrogen generator with oxygen-enriched tail gas recovery function

Info

Publication number: CN215626809U
Application number: CN202121909933.4U
Authority: CN
Inventors: 苏铁军; 徐雷; 孙胜海
Original assignee: Jiangsu Enming Electromechanical Technology Co ltd
Current assignee: Jiangsu Enming Electromechanical Technology Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-01-25
Anticipated expiration: 2031-08-16

Abstract

The utility model relates to the technical field of nitrogen making machines, and discloses a pressure swing adsorption nitrogen making machine with an oxygen-enriched tail gas recovery function, which comprises a nitrogen making mechanism, a filter tower arranged on the nitrogen making mechanism and a valve arranged in the filter tower, wherein the nitrogen making mechanism comprises a base, dry air in a buffer tank enters the filter tower through an air inlet pipeline, then a first one-way valve is closed, a hydraulic press extends out, because the diameter of oxygen atoms is slightly smaller than that of nitrogen atoms, a piston plate compresses the air under the action of the extension of the hydraulic press, the oxygen atoms enter an oxygen tank from a first air outlet pipeline through a carbon molecular sieve and are collected, the nitrogen atoms are in a high-pressure state between the piston plate and the carbon molecular sieve, then the valve is opened, the nitrogen enters a space below the piston plate and the filter tower, the valve is closed, the nitrogen enters the nitrogen tank through a second air outlet pipeline in the retraction motion of the hydraulic press and is collected, realizes the recovery of the rich oxygen and reduces the waste of resources.

Description

Pressure swing adsorption nitrogen generator with oxygen-enriched tail gas recovery function

Technical Field

The utility model relates to the technical field of nitrogen making machines, in particular to a pressure swing adsorption nitrogen making machine with an oxygen-enriched tail gas recovery function.

Background

Pressure Swing Adsorption (PSA) is a new gas separation technology, and its principle is to use the difference of molecular sieve 'adsorption' performance to different gas molecules to separate gas mixture.

The process can obtain oxygen-enriched air while preparing high-purity nitrogen, the oxygen-enriched air is clean gas which is dust-free, oil-free and dry, oxygen sources in the oxygen-enriched combustion technical industry come from air separation equipment, but after nitrogen is prepared by a traditional nitrogen making machine, oxygen-enriched tail gas is directly discharged, and resource waste is caused.

In order to solve the problems, the pressure swing adsorption nitrogen making machine with the oxygen-enriched tail gas recovery function is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pressure swing adsorption nitrogen making machine with an oxygen-enriched tail gas recovery function, which works by adopting the device, so that the problem of resource waste caused by directly discharging oxygen-enriched tail gas after nitrogen is made by the traditional nitrogen making machine in the background is solved.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a pressure swing adsorption nitrogen generator with oxygen boosting tail gas retrieves function, includes nitrogen generator and sets up the filter tower in nitrogen generator, still including setting up the valve in the filter tower, nitrogen generator includes the base, the inside top of filter tower is provided with the carbon molecular sieve, the top fixedly connected with and the corresponding hydraulic press of filter tower of base, the output fixedly connected with slide bar of hydraulic press, slide bar sliding connection are in the bottom of filter tower, the top fixedly connected with piston board of slide bar, and piston board sliding connection is provided with the valve that runs through on the piston board on the inner wall of filter tower.

Further, nitrogen making mechanism includes air compressor machine, drying tower and the buffer tank of fixed connection on the base, and air compressor machine and drying tower are connected through the pipeline, are connected through the pipeline between drying tower and the buffer tank, and the bottom fixedly connected with landing leg of filter tower, landing leg and base fixed connection.

Furthermore, be connected with the air inlet pipeline between buffer tank and the filter tower, and be provided with first check valve on the air inlet pipeline, the top and the bottom of filter tower are connected with first gas outlet pipeline and second gas outlet pipeline respectively, and the one end that first gas outlet pipeline and second gas outlet pipeline are close to the filter tower all is provided with the second check valve.

Further, nitrogen making mechanism still is including setting up nitrogen gas jar and the oxygen jar at base top opposite side, and the other end of second gas outlet pipeline and the other end of first gas outlet pipeline are connected with nitrogen gas jar and oxygen jar respectively.

Further, the valve comprises a valve body, a first cavity and a second cavity, wherein the first cavity and the second cavity are arranged in the valve body, and the first cavity is provided with two groups.

Furthermore, the first cavity and the second cavity are communicated through a channel, the top and the bottom of the valve body are respectively provided with an air inlet and an air outlet, the first cavity is communicated with the air inlet, and the second cavity is communicated with the air outlet.

Furthermore, a first spring is fixedly connected to the lower portion inside the first cavity, a first sealing ball body slightly larger than the diameter of the air outlet is fixedly connected to the other end of the first spring, a second spring is fixedly connected to the upper portion inside the second cavity, a second sealing ball body is fixedly connected to the other end of the second spring, the second sealing ball body is a member made of iron, the diameter of the second sealing ball body is slightly larger than the diameter of the air outlet, and an electromagnetic coil is fixedly connected to the middle of the second cavity.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the pressure swing adsorption nitrogen making machine with the oxygen-enriched tail gas recovery function, dry air in a buffer tank enters the inside of a filter tower through an air inlet pipeline, then a first one-way valve is closed, a hydraulic press extends out, because the diameter of oxygen atoms is slightly smaller than that of the nitrogen atoms, a piston plate compresses the air under the action of the extension of the hydraulic press, the oxygen atoms enter the oxygen tank from a first air outlet pipeline through a carbon molecular sieve and are collected, the nitrogen atoms are in a high-pressure state between the piston plate and the carbon molecular sieve, then a valve is opened, nitrogen enters a space below the piston plate and the filter tower, the valve is closed, and nitrogen enters the nitrogen tank through a second air outlet pipeline and is collected in the retraction motion of the hydraulic press, so that the oxygen-enriched recovery is realized, and the waste of resources is reduced.

2. According to the pressure swing adsorption nitrogen making machine with the oxygen-enriched tail gas recycling function, when air in the middle of a valve needs to circulate, the electromagnetic coil is switched on, the electromagnetic coil is electrified to adsorb the second sealing ball, so that a gap exists between the second sealing ball and the air outlet, then nitrogen enters the second cavity from the first cavity through the channel and finally comes out of the air outlet, and no matter what state the second sealing ball is, the first sealing ball can prevent gas from flowing back under the action of the first spring, so that the functions of one-way passing and electric opening and closing are achieved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the internal structure of a filtration tower of the present invention;

FIG. 3 is an exploded view of the valve structure of the present invention;

fig. 4 is a sectional view of the valve structure of the present invention.

In the figure: 1. a nitrogen making mechanism; 11. a base; 12. a filtration tower; 121. a support leg; 122. a carbon molecular sieve; 123. an air intake line; 1231. a first check valve; 124. a first gas outlet pipeline; 1241. a second one-way valve; 125. a second outlet pipeline; 126. a hydraulic press; 1261. a slide bar; 1262. a piston plate; 13. a buffer tank; 14. a drying tower; 15. an air compressor; 16. a nitrogen tank; 17. an oxygen tank; 2. a valve; 21. a valve body; 211. an air inlet; 212. an air outlet; 22. a first cavity; 221. a first spring; 222. a first sealing sphere; 23. a channel; 24. a second cavity; 241. a second spring; 242. a second sealing sphere; 243. an electromagnetic coil.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, a pressure swing adsorption nitrogen generator with oxygen-enriched tail gas recycling function comprises a nitrogen generator 1, a filter tower 12 arranged on the nitrogen generator 1, and a valve 2 arranged in the filter tower 12, wherein the nitrogen generator 1 comprises a base 11, a carbon molecular sieve 122 is arranged above the inside of the filter tower 12, a hydraulic press 126 corresponding to the filter tower 12 is fixedly connected to the top of the base 11, a slide rod 1261 is fixedly connected to the output end of the hydraulic press 126, the slide rod 1261 is slidably connected to the bottom of the filter tower 12, a piston plate 1262 is fixedly connected to the top of the slide rod 1261, the piston plate 1262 is slidably connected to the inner wall of the filter tower 12, the valve 2 penetrates through the piston plate 1262, the nitrogen generator 1 comprises an air compressor 15, a drying tower 14 and a buffer tank 13 which are fixedly connected to the base 11, the air compressor 15 is connected to the drying tower 14 through a pipeline, and the buffer tank 13 is connected through a pipeline, the bottom of the filter tower 12 is fixedly connected with a support leg 121, and the support leg 121 is fixedly connected with the base 11.

Be connected with air inlet pipeline 123 between buffer tank 13 and the filter tower 12, and be provided with first check valve 1231 on the air inlet pipeline 123, the top and the bottom of filter tower 12 are connected with first gas outlet pipeline 124 and second gas outlet pipeline 125 respectively, and the one end that first gas outlet pipeline 124 and second gas outlet pipeline 125 are close to filter tower 12 all is provided with second check valve 1241, nitrogen making mechanism 1 is still including setting up nitrogen gas jar 16 and the oxygen jar 17 at the top opposite side of base 11, and the other end of second gas outlet pipeline 125 and the other end of first gas outlet pipeline 124 are connected with nitrogen gas jar 16 and oxygen jar 17 respectively.

Referring to fig. 3-4, the valve 2 includes a valve body 21, and a first cavity 22 and a second cavity 24 disposed in the valve body 21, and two sets of the first cavity 22 are disposed, the first cavity 22 and the second cavity 24 are communicated through a channel 23, the top and the bottom of the valve body 21 are respectively provided with an air inlet 211 and an air outlet 212, the first cavity 22 is communicated with the air inlet 211, the second cavity 24 is communicated with the air outlet 212, a first spring 221 is fixedly connected to the lower portion of the interior of the first cavity 22, the other end of the first spring 221 is fixedly connected to a first sealing ball 222 having a diameter slightly larger than that of the air outlet 212, a second spring 241 is fixedly connected to the upper portion of the interior of the second cavity 24, the other end of the second spring 241 is fixedly connected to a second sealing ball 242, the second sealing ball 242 is a member made of iron, and the diameter of the second sealing ball 242 is slightly larger than that of the air outlet 212, an electromagnetic coil 243 is fixedly connected to the middle of the second cavity 24.

The working principle is as follows: the dry air in the buffer tank 13 enters the inside of the filter tower 12 through the air inlet pipeline 123, then the first check valve 1231 is closed, the hydraulic press 126 extends out, because the diameter of the oxygen atoms is slightly smaller than the nitrogen atoms, under the action of the extension of the hydraulic press 126, the piston plate 1262 compresses the air, the oxygen atoms penetrate through the carbon molecular sieve 122 and enter the inside of the oxygen tank 17 from the first air outlet pipeline 124 to be collected, the nitrogen atoms are in a high-pressure state between the piston plate 1262 and the carbon molecular sieve 122, then the valve 2 is opened, the nitrogen enters the space below the piston plate 1262 and the filter tower 12, the valve 2 is closed, the nitrogen enters the inside of the nitrogen tank 16 through the second air outlet pipeline 125 to be collected in the retraction motion of the hydraulic press 126, the recovery of the rich oxygen is realized, the waste of resources is reduced, and when the circulation of the air in the middle of the valve 2 is required, the electromagnetic coil 243 is switched on, the electromagnetic coil 243 is electrified to adsorb the second sealing ball 242, so that a gap exists between the second sealing ball 242 and the air outlet 212, then the nitrogen enters the second cavity 24 from the first cavity 22 through the channel 23, and finally exits from the air outlet 212, and the first sealing ball 222 can prevent the gas from flowing back under the action of the first spring 221 no matter what state the second sealing ball 242 is in.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pressure swing adsorption nitrogen generator with oxygen boosting tail gas recovery function, includes nitrogen generator (1) and sets up filter tower (12) on nitrogen generator (1), still including setting up valve (2) in filter tower (12), its characterized in that: nitrogen making mechanism (1) includes base (11), the inside top of filter tower (12) is provided with carbon molecular sieve (122), the top fixedly connected with of base (11) and filter tower (12) corresponding hydraulic press (126), the output fixedly connected with slide bar (1261) of hydraulic press (126), slide bar (1261) sliding connection is in the bottom of filter tower (12), the top fixedly connected with piston board (1262) of slide bar (1261), piston board (1262) sliding connection is on the inner wall of filter tower (12), be provided with valve (2) that run through on piston board (1262).

2. The pressure swing adsorption nitrogen generator with the oxygen-enriched tail gas recovery function according to claim 1, characterized in that: nitrogen making mechanism (1) is connected through the pipeline including air compressor machine (15), drying tower (14) and buffer tank (13) on base (11) of fixed connection, air compressor machine (15) and drying tower (14), is connected through the pipeline between drying tower (14) and buffer tank (13), and the bottom fixedly connected with landing leg (121) of filter tower (12), landing leg (121) and base (11) fixed connection.

3. The pressure swing adsorption nitrogen generator with the oxygen-enriched tail gas recovery function according to claim 2, characterized in that: be connected with air inlet pipeline (123) between buffer tank (13) and filter tower (12), and be provided with first check valve (1231) on air inlet pipeline (123), the top and the bottom of filter tower (12) are connected with first gas outlet pipeline (124) and second gas outlet pipeline (125) respectively, and first gas outlet pipeline (124) and second gas outlet pipeline (125) are close to the one end of filter tower (12) and all are provided with second check valve (1241).

4. The pressure swing adsorption nitrogen generator with the function of oxygen-enriched tail gas recovery as claimed in claim 3, characterized in that: the nitrogen making mechanism (1) further comprises a nitrogen tank (16) and an oxygen tank (17) which are arranged on the other side of the top of the base (11), and the other end of the second gas outlet pipeline (125) and the other end of the first gas outlet pipeline (124) are respectively connected with the nitrogen tank (16) and the oxygen tank (17).

5. The pressure swing adsorption nitrogen generator with the oxygen-enriched tail gas recovery function according to claim 1, characterized in that: the valve (2) comprises a valve body (21), a first cavity (22) and a second cavity (24) which are arranged in the valve body (21), and two groups of first cavities (22) are arranged.

6. The pressure swing adsorption nitrogen generator with the function of oxygen-enriched tail gas recovery as claimed in claim 5, characterized in that: the first cavity (22) is communicated with the second cavity (24) through a channel (23), the top and the bottom of the valve body (21) are respectively provided with an air inlet (211) and an air outlet (212), the first cavity (22) is communicated with the air inlet (211), and the second cavity (24) is communicated with the air outlet (212).

7. The pressure swing adsorption nitrogen generator with the function of oxygen-enriched tail gas recovery as claimed in claim 6, characterized in that: the air-conditioning device is characterized in that a first spring (221) is fixedly connected to the lower portion of the inside of the first cavity (22), the other end of the first spring (221) is fixedly connected with a first sealing ball body (222) which is slightly larger than the diameter of the air outlet (212), a second spring (241) is fixedly connected to the upper portion of the inside of the second cavity (24), the other end of the second spring (241) is fixedly connected with a second sealing ball body (242), the second sealing ball body (242) is a member made of iron, the diameter of the second sealing ball body (242) is slightly larger than the diameter of the air outlet (212), and an electromagnetic coil (243) is fixedly connected to the middle of the second cavity (24).