CN210751989U

CN210751989U - Air separation equipment convenient to waste gas recovery

Info

Publication number: CN210751989U
Application number: CN201921481428.7U
Authority: CN
Inventors: 周占盈; 孙建辉
Original assignee: Qidong Kelan Mechanical And Electrical Equipment Co Ltd
Current assignee: Qidong Kelan Mechanical And Electrical Equipment Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-06-16
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses an air separation equipment convenient to waste gas recovery, including air compressor, SMN membrane separation system nitrogen device and collection box, the one end of connecting pipe is installed to air compressor's right-hand member, and the intermediate position of connecting pipe is fixed with the filter, SMN membrane separation system nitrogen device installs in the other end of connecting pipe, and SMN membrane separation system nitrogen device includes first isolation area, SMN membrane and second isolation area, the one end of induced duct is installed to the below of second isolation area, and the intermediate position of induced duct installs the draught fan, the collection box is fixed in the other end of induced duct, and the lower left corner of collection box is connected with the collector tube, the heat exchange tube is installed to the inside intermediate position of collection box, and the upper and lower both sides of heat exchange tube all are provided with the lead screw, the right-hand member of lead screw rotates and is connected with the motor, and the outer wall. The utility model discloses a can carry the recovery box inside with the inside remaining waste gas of second subregion, carry out the oxygen separation and retrieve.

Description

Air separation equipment convenient to waste gas recovery

Technical Field

The utility model relates to an air separation equipment technical field specifically is an air separation equipment convenient to waste gas recovery.

Background

The SMN nitrogen membrane system is an air separation device and consists of an air compressor, a filter and an SMN membrane separation nitrogen making device, compressed air enters the SMN membrane separation nitrogen making device through the filter, oxygen, water vapor and a small amount of carbon dioxide in the air rapidly permeate the membrane to enter the other side of the membrane to be enriched, and nitrogen permeates the membrane at a slow relative speed and stays at a membrane retention side to be enriched, so that nitrogen separation is realized.

At present, in the use process of SMN nitrogen membrane system air separation equipment in the market, oxygen, water vapor and a small amount of carbon dioxide are difficult to recover and then separate, and the problem that oxygen in waste gas is inconvenient to recycle exists, so that the air separation equipment convenient for waste gas recovery is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air separation equipment convenient to waste gas recovery to the SMN nitrogen membrane system air separation equipment on the existing market who proposes in solving above-mentioned background art is difficult to retrieve oxygen, vapor and a small amount of carbon dioxide and separates the operation in the use, has the problem that the oxygen in the waste gas is not convenient for recycle.

In order to achieve the above object, the utility model provides a following technical scheme: an air separation device convenient for waste gas recovery comprises an air compressor, an SMN membrane separation nitrogen making device and a recovery box, wherein one end of a connecting pipe is installed at the right end of the air compressor, a filter is fixed at the middle position of the connecting pipe, the SMN membrane separation nitrogen making device is installed at the other end of the connecting pipe, the SMN membrane separation nitrogen making device comprises a first separation area, an SMN membrane and a second separation area, the SMN membrane is fixed at the middle position inside the SMN membrane separation nitrogen making device, the second separation area is arranged on the right side of the SMN membrane, the first separation area is arranged on the left side of the SMN membrane, the lower portion of the first separation area is communicated with a nitrogen pipe, one end of an induced duct is installed below the second separation area, an induced draft fan is installed at the middle position of the induced duct, the recovery box is fixed at the other end of the induced duct, and a recovery pipe is connected to the lower left corner of the recovery box, the oxygen hose is installed to the right-hand member of collection box, and the inside of oxygen hose is fixed with eccentric butterfly valve, the heat exchange tube is installed to the inside intermediate position of collection box, and the upper and lower both sides of heat exchange tube all are provided with the lead screw, the right-hand member of lead screw rotates and is connected with the motor, and the outer wall connection of lead screw has the ball slip table, be fixed with clean board between the inboard of ball slip table, and the inside of clean board has seted up clean hole, the inner wall in clean hole is fixed with clean scraper.

Preferably, the number of the eccentric butterfly valves is set to be 4, and the second separation area forms a communicating structure through the induced draft tube, the induced draft fan and the recycling bin.

Preferably, the heat exchange tubes are distributed along the horizontal central line of the recovery box in a radiation manner, and the distribution structure of the cleaning holes is matched with the distribution structure of the heat exchange tubes.

Preferably, the outer wall of lead screw and the inner wall of ball slip table all set up the screw thread, and the screw thread size between lead screw and the ball slip table is identical.

Preferably, the cleaning plate has a disc-shaped structure, and the cleaning holes penetrate through the cleaning plate.

Preferably, the structure of the cleaning scraper is an annular structure, and the inner diameter of the cleaning scraper is equal to the outer diameter of the heat exchange tube.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the air separation equipment convenient for waste gas recovery is provided with four eccentric butterfly valves which are respectively arranged on four pipelines, so that the operation of each link is separated through the separation effect of the eccentric butterfly valves without mutual interference, and under the action of a draught fan, residual oxygen, water vapor and a small amount of carbon dioxide in a second separation area can be conveyed into a recovery box for oxygen separation and recovery, thereby being beneficial to improving the waste gas utilization rate;

2. the plurality of heat exchange tubes are distributed in a manner of radiating outwards from the center, and the main bodies of the heat exchange tubes are not contacted with each other, so that the contact area between gas and the heat exchange tubes is increased, and the cooling efficiency of the heat exchange tubes is improved;

3. set up clean board and can once clean many heat exchange tubes, clean efficient to ice and solid carbon dioxide after clean can retrieve the storage through the recovery tube, set up in clean board motion process, clean scraper can strike off the water and the carbon dioxide that condense on the heat exchange tube outer wall, avoid the heat exchange tube outer wall to condense too much water and carbon dioxide, influence the heat transfer cooling effect in later stage, be favorable to improving the inside rate of recovery to oxygen of collection box.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the recycling bin of the present invention;

fig. 3 is the utility model discloses the ball slip table looks sideways at the structure sketch map with the installation of cleaning plate.

In the figure: 1. an air compressor; 2. a connecting pipe; 3. a filter; 4. SMN membrane separation nitrogen making device; 401. a first separation zone; 402. a SMN film; 403. a second separation zone; 5. a nitrogen gas pipe; 6. an induced draft pipe; 7. an induced draft fan; 8. a recycling bin; 9. a recovery pipe; 10. an oxygen tube; 11. an eccentric butterfly valve; 12. a heat exchange pipe; 13. a screw rod; 14. a ball sliding table; 15. an electric motor; 16. cleaning the plate; 17. cleaning the hole; 18. cleaning the scraper.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides an air separation apparatus convenient for recycling waste gas, which comprises an air compressor 1, a connecting pipe 2, a filter 3, an SMN membrane separation nitrogen production device 4, a first separation region 401, an SMN membrane 402, a second separation region 403, a nitrogen pipe 5, an induced draft pipe 6, an induced draft fan 7, a recycling tank 8, a recycling pipe 9, an oxygen pipe 10, an eccentric butterfly valve 11, a heat exchange pipe 12, a screw 13, a ball sliding table 14, a motor 15, a cleaning plate 16, a cleaning hole 17 and a cleaning scraper 18, wherein one end of the connecting pipe 2 is installed at the right end of the air compressor 1, the filter 3 is fixed at the middle position of the connecting pipe 2, the SMN membrane separation nitrogen production device 4 is installed at the other end of the connecting pipe 2, the SMN membrane separation nitrogen production device 4 comprises a first separation region 401, an SMN membrane 402 and a second separation region 403, the SMN membrane separation nitrogen production device 4 is fixed at the middle position inside the SMN membrane separation, the right side of the SMN membrane 402 is provided with a second separation area 403, the left side of the SMN membrane 402 is provided with a first separation area 401, the lower part of the first separation area 401 is communicated with a nitrogen gas pipe 5, the lower part of the second separation area 403 is provided with one end of an induced air pipe 6, the middle position of the induced air pipe 6 is provided with an induced draft fan 7, a recovery box 8 is fixed at the other end of the induced air pipe 6, the lower left corner of the recovery box 8 is connected with a recovery pipe 9, the right end of the recovery box 8 is provided with an oxygen pipe 10, the inside of the oxygen pipe 10 is fixed with an eccentric butterfly valve 11, the number of the eccentric butterfly valves 11 is 4, the second separation area 403 forms a communication structure through the induced air pipe 6 and the induced draft fan 7 and the recovery box 8, the four eccentric butterfly valves 11 are respectively arranged on four pipelines so as to separate each link operation through the separation function of the eccentric butterfly valves 11 without mutual interference, and under the action of, oxygen, water vapor and a small amount of carbon dioxide remaining in the second separation area 403 can be conveyed into the recovery box 8 for oxygen separation and recovery, which is beneficial to improving the utilization rate of waste gas;

a heat exchange tube 12 is arranged in the middle of the interior of the recycling box 8, screw rods 13 are arranged on the upper side and the lower side of the heat exchange tube 12, a motor 15 is rotatably connected to the right end of each screw rod 13, a ball sliding table 14 is connected to the outer wall of each screw rod 13, a cleaning plate 16 is fixed between the inner sides of the ball sliding tables 14, cleaning holes 17 are formed in the cleaning plate 16, threads are formed in the outer wall of each screw rod 13 and the inner wall of the ball sliding table 14, the sizes of the threads between the screw rods 13 and the ball sliding tables 14 are identical, the screw rods 13 and the ball sliding tables 14 are connected through the action of the threads, so that when the screw rods 13 rotate, the ball sliding tables 14 can slide along the screw rods 13 to drive the cleaning plates 16 to move, the effect of automatically cleaning the surface of the heat exchange tube 12 is achieved, the heat exchange tube 12 is radially distributed along the horizontal center, a plurality of heat exchange tubes 12 are arranged to be distributed in a manner of radiating outwards from the center, the distribution shape is the same as the distribution shape of the cleaning holes 17 when being observed from the cross section, and the main bodies of the heat exchange tubes 12 are not contacted with each other, so that the contact area between gas and the heat exchange tubes 12 is increased, and the cooling efficiency of the heat exchange tubes 12 is improved;

the structure of the cleaning plate 16 is a disc-shaped structure, the cleaning holes 17 penetrate through the cleaning plate 16, the number of the cleaning holes 17 arranged on the cleaning plate 16 is matched with the number of the heat exchange tubes 12, so that the cleaning plate 16 can clean a plurality of heat exchange tubes 12 at a time, the cleaning efficiency is high, the cleaned ice and solid carbon dioxide can be recovered and stored through the recovery tube 9, the cleaning scraper 18 is fixed on the inner wall of the cleaning hole 17, the cleaning scraper 18 is of an annular structure, the inner diameter of the cleaning scraper 18 is equal to the outer diameter of the heat exchange tubes 12, the cleaning scraper 18 is arranged to be tightly attached to the outer walls of the heat exchange tubes 12 when in action, so that the cleaning scraper 18 can scrape water and carbon dioxide condensed on the outer walls of the heat exchange tubes 12 in the movement process of the cleaning plate 16, too much water and carbon dioxide condensed on the outer walls of the heat exchange tubes, is favorable for improving the recovery rate of oxygen in the recovery box 8.

The working principle is as follows: for the air separation equipment convenient for waste gas recovery, firstly, air is compressed by an air compressor 1, the compressed air enters a filter 3 through a connecting pipe 2 to be filtered and then is conveyed into an SMN membrane separation nitrogen making device 4, because the speeds of the nitrogen, the oxygen, the water vapor and the carbon dioxide passing through the SMN membrane 402 are different, the oxygen, the water vapor and the carbon dioxide rapidly pass through the SMN membrane 402 and reach the inside of a second separation zone 403, the nitrogen is retained in the first separation zone 401, the nitrogen can be discharged through a nitrogen pipe 5 by opening an eccentric butterfly valve 11 on a nitrogen pipe 5, then the eccentric butterfly valve 11 on an induced draft pipe 6 is opened, simultaneously, an induced draft fan 7 is started, the induced draft fan 7 conveys the oxygen, the water vapor and the carbon dioxide in the second separation zone 403 to the inside a recovery box 8 through the induced draft pipe 6, then a heat exchange pipe 12 in the recovery box 8 is started, the heat exchange tube 12 is fully contacted with oxygen, water vapor and carbon dioxide, absorbs the heat of the oxygen, the water vapor and the carbon dioxide, and reduces the temperature of the oxygen, the freezing points of the water vapor and the carbon dioxide are lower than that of the oxygen, so that the water vapor and the carbon dioxide are solidified on the outer wall of the heat exchange tube 12 when reaching a certain temperature, and the oxygen can be discharged along the oxygen tube 10 after the eccentric butterfly valve 11 on the oxygen tube 10 is opened;

when the steam and the carbon dioxide condensed on the outer wall of the heat exchange tube 12 need to be cleaned, two motors 15 are started simultaneously, the motors 15 work to drive the two screw rods 13 to rotate synchronously, a thread effect is generated between the screw rods 13 and the ball sliding tables 14, so that the ball sliding tables 14 slide leftwards along the screw rods 13 to drive the cleaning plates 16 to move leftwards, each cleaning hole 17 corresponds to each heat exchange tube 12, the heat exchange tube 12 is inserted into the cleaning hole 17, meanwhile, friction is generated between the cleaning scraper 18 and the outer wall of the heat exchange tube 12 to scrape the steam and the carbon dioxide condensed on the outer wall of the heat exchange tube 12, the solidified steam and the carbon dioxide fall on the lower left corner of the recovery box 8, and as the bottom of the recovery box 8 is in an inclined state, the solidified steam and the carbon dioxide can fall into the recovery tube 9 along the bottom surface of the recovery box 8, the solidified water vapor and carbon dioxide can be discharged through the recovery pipe 9, thus completing the use process of the whole air separation equipment convenient for waste gas recovery.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an air separation equipment convenient to waste gas recovery, includes air compressor (1), SMN membrane separation system nitrogen device (4) and collection box (8), its characterized in that: the one end of connecting pipe (2) is installed to the right-hand member of air compressor (1), and the intermediate position of connecting pipe (2) is fixed with filter (3), SMN membrane separation nitrogen device (4) are installed in the other end of connecting pipe (2), and SMN membrane separation nitrogen device (4) include first separation zone (401), SMN membrane (402) and second separation zone (403), the inside intermediate position of SMN membrane separation nitrogen device (4) is fixed with SMN membrane (402), and the right side of SMN membrane (402) is provided with second separation zone (403), the left side of SMN membrane (402) is provided with first separation zone (401), and the below of first separation zone (401) is linked together with nitrogen gas pipe (5), the one end of induced duct (6) is installed to the below of second separation zone (403), and the intermediate position of induced duct (6) installs (7), collection box (8) are fixed in the other end of induced duct (6), and the lower left corner of collection box (8) is connected with recovery tube (9), oxygen hose (10) are installed to the right-hand member of collection box (8), and the inside of oxygen hose (10) is fixed with eccentric butterfly valve (11), heat exchange tube (12) are installed to the inside intermediate position of collection box (8), and the upper and lower both sides of heat exchange tube (12) all are provided with lead screw (13), the right-hand member of lead screw (13) rotates and is connected with motor (15), and the outer wall connection of lead screw (13) has ball slip table (14), be fixed with between the inboard of ball slip table (14) clean board (16), and the inside of clean board (16) has seted up clean hole (17), the inner wall of clean hole (17) is fixed with clean scraper (18).

2. An air separation plant facilitating the recovery of flue gas according to claim 1, wherein: the number of the eccentric butterfly valves (11) is set to be 4, and the second separation area (403) forms a communicating structure between the induced draft pipe (6), the induced draft fan (7) and the recovery box (8).

3. An air separation plant facilitating the recovery of flue gas according to claim 1, wherein: the heat exchange tubes (12) are distributed along the horizontal central line of the recovery box (8) in a radiation manner, and the distribution structure of the cleaning holes (17) is matched with the distribution structure of the heat exchange tubes (12).

4. An air separation plant facilitating the recovery of flue gas according to claim 1, wherein: the outer wall of the screw rod (13) and the inner wall of the ball sliding table (14) are both provided with threads, and the thread sizes between the screw rod (13) and the ball sliding table (14) are identical.

5. An air separation plant facilitating the recovery of flue gas according to claim 1, wherein: the structure of the cleaning plate (16) is a disc-shaped structure, and the cleaning holes (17) penetrate through the cleaning plate (16).

6. An air separation plant facilitating the recovery of flue gas according to claim 1, wherein: the structure of the cleaning scraper (18) is an annular structure, and the inner diameter of the cleaning scraper (18) is equal to the outer diameter of the heat exchange pipe (12).