CN218890352U

CN218890352U - Instrument wind nitrogen generation system of CCUS

Info

Publication number: CN218890352U
Application number: CN202223162177.0U
Authority: CN
Inventors: 苑锋; 马登欣; 芮羽; 葛丽静; 刘晓凤; 李智强
Original assignee: Shandong Laike Engineering Co ltd
Current assignee: Shandong Laike Engineering Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-21
Anticipated expiration: 2032-11-29

Abstract

The utility model relates to the technical field of nitrogen production, in particular to an instrument wind nitrogen production system of a CCUS, which comprises an air compressor, a buffer tank, a cold dryer, a gas purification assembly, an air storage tank, a nitrogen storage tank and two adsorption towers; wherein; the inner side of the adsorption tower is provided with a baffle, the cavities at the left side and the right side of the baffle are respectively provided with a carbon molecular sieve, two through holes are formed in the baffle, two ends of the two carbon molecular sieves are respectively fixed with a sealing plate, and the adsorption tower is provided with two linear driving mechanisms for respectively driving the carbon molecular sieves at the two sides to move; the nitrogen storage tank is connected with a reverse gas pipe, the other end of the reverse gas pipe is communicated with two gas branch pipes, and the other ends of the two gas branch pipes are respectively connected with the top ends of the two adsorption towers. The utility model realizes the regeneration of the carbon molecular sieve by back blowing, can still keep normal nitrogen production work in the process, does not need to stop, and has strong practicability.

Description

Instrument wind nitrogen generation system of CCUS

Technical Field

The utility model relates to the technical field of nitrogen production, in particular to an instrument wind nitrogen production system of a CCUS.

Background

The CCUS technology is a new development trend of CCS (Carbon Capture and Storage, carbon capture and sequestration) technology, namely, purifying carbon dioxide discharged in the production process, and then putting the purified carbon dioxide into a new production process for recycling instead of simply sequestration. Compared with CCS, the method can recycle carbon dioxide, can generate economic benefit and has more practical operability; the instrument wind refers to pneumatic power for each production, such as a pneumatic valve, and instrument gas for controlling and displaying process parameters, the air quality requirement is higher, the pressure is stable, the instrument wind is normally open, and in the prior art, the instrument can use nitrogen as a gas source because the nitrogen is inert gas.

However, in the process of producing nitrogen by using the carbon molecular sieve nitrogen production machine in the prior art, the carbon molecular sieve layer is gradually saturated with the lapse of time, and the purity of the produced nitrogen is gradually reduced.

Disclosure of Invention

The utility model aims at solving the technical problems in the background art, and provides an instrument wind nitrogen generation system of a CCUS.

The technical scheme of the utility model is as follows: the utility model provides a CCUS's instrument wind nitrogen generation system, includes air compressor machine, buffer tank, cold dry machine, gas purification subassembly, air storage tank, nitrogen gas holding vessel and two adsorption towers; the air compressor, the buffer tank, the cold dryer, the gas purification assembly and the air storage tank are all connected through a guide pipe, the output end of the air storage tank is connected with a main air inlet pipe, the other end of the main air inlet pipe is communicated with two air inlet branch pipes, the other ends of the two air inlet branch pipes are respectively connected with the bottom ends of the two adsorption towers, the nitrogen storage tank is connected with a main exhaust pipe, the other end of the main exhaust pipe is communicated with two exhaust branch pipes, the other ends of the two exhaust branch pipes are respectively connected with the top ends of the two adsorption towers, a communicating pipe A is connected between the two air inlet branch pipes, and a communicating pipe B is connected between the two exhaust branch pipes; the inner side of the adsorption tower is provided with a baffle plate, the cavities at the left side and the right side of the baffle plate are respectively provided with a carbon molecular sieve, the two carbon molecular sieves are positioned at different height positions, the baffle plate is provided with two perforations, the two carbon molecular sieves respectively penetrate through the perforations at the two sides in a movable way, the two ends of the two carbon molecular sieves are respectively fixed with a sealing plate, and the adsorption tower is provided with two linear driving mechanisms for respectively driving the carbon molecular sieves at the two sides to move; the nitrogen storage tank is connected with a reverse gas pipe, the other end of the reverse gas pipe is communicated with two gas branch pipes, and the other ends of the two gas branch pipes are respectively connected with the top ends of the two adsorption towers; a connecting pipe A is connected between the bottom end of the adsorption tower and the air inlet branch pipe at the corresponding side; electromagnetic valves are arranged on the main air inlet pipe, the air inlet branch pipe, the main air outlet pipe, the air outlet branch pipe, the connecting pipe A, the reverse air delivery pipe, the air delivery branch pipe, the communicating pipe A and the communicating pipe B.

Preferably, the air inlet branch pipe and the air outlet branch pipe are communicated with the cavity on the right side of the partition board, and the connecting pipe A and the air delivery branch pipe are communicated with the cavity on the left side of the partition board.

Preferably, a connecting pipe B is arranged on the adsorption tower, two ends of the connecting pipe B are respectively arranged at the upper end and the lower end of the cavity at the right side of the partition board, and an electromagnetic valve is also arranged on the connecting pipe B; the top of the cavity on the right side of the partition plate is provided with a nitrogen concentration sensor.

Preferably, the gas cleaning assembly includes a class C filter, a class T filter, a class A filter, and an activated carbon filter.

Preferably, a deoiler is also mounted on the conduit between the air storage tank and the gas cleaning assembly.

Preferably, the nitrogen storage tank and the two adsorption towers are provided with barometers.

Preferably, the main exhaust pipe is provided with a one-way air inlet valve.

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial technical effects: when regenerating the carbon molecular sieve, control starts two sharp actuating mechanism work, and sharp actuating mechanism drives the carbon molecular sieve and removes for two carbon molecular sieves's position in the adsorption tower is traded, and the electromagnetic valve on reverse gas-supply pipe and the gas transmission branch pipe is opened in the system control afterwards, and nitrogen gas enters into the left cavity of baffle, realizes the regeneration to the carbon molecular sieve through the blowback, and the in-process still can keep normal nitrogen production work, need not to shut down, and the practicality is strong.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic view of the inside of the adsorption tower according to the present utility model.

Reference numerals: 1. an air compressor; 2. a buffer tank; 3. an oil remover; 4. an air storage tank; 5. an adsorption tower; 6. a cold dryer; 7. a nitrogen storage tank; 8. a class C filter; 9. a T-stage filter; 10. a class A filter; 11. an activated carbon filter; 12. an air pressure gauge; 131. a main air inlet pipe; 132. an air inlet branch pipe; 133. a total exhaust pipe; 134. an exhaust branch pipe; 135. a connecting pipe A; 136. a reverse gas pipe; 1361. a gas delivery branch pipe; 137. a communicating pipe A; 138. a communicating pipe B; 139. a connecting pipe B; 14. an electromagnetic valve; 15. a one-way air inlet valve; 16. a nitrogen concentration sensor; 17. a partition plate; 171. perforating; 18. a carbon molecular sieve; 19. a sealing plate; 20. a linear driving mechanism.

Detailed Description

Example 1

As shown in fig. 1-2, the instrument wind nitrogen generation system of the CCUS provided by the utility model comprises an air compressor 1, a buffer tank 2, a cold dryer 6, a gas purification component, an air storage tank 4, a nitrogen storage tank 7 and two adsorption towers 5; the air compressor 1, the buffer tank 2, the cold dryer 6, the gas purification assembly and the air storage tank 4 are all connected through a conduit, the output end of the air storage tank 4 is connected with a main air inlet pipe 131, the other end of the main air inlet pipe 131 is communicated with two air inlet branch pipes 132, the other ends of the two air inlet branch pipes 132 are respectively connected with the bottom ends of the two adsorption towers 5, the nitrogen storage tank 7 is connected with a main exhaust pipe 133, the other end of the main exhaust pipe 133 is communicated with two exhaust branch pipes 134, the other ends of the two exhaust branch pipes 134 are respectively connected with the top ends of the two adsorption towers 5, a communicating pipe A137 is connected between the two air inlet branch pipes 132, and a communicating pipe B138 is connected between the two exhaust branch pipes 134; the inside of the adsorption tower 5 is provided with a baffle plate 17, the cavities at the left side and the right side of the baffle plate 17 are respectively provided with a carbon molecular sieve 18, the two carbon molecular sieves 18 are positioned at different height positions, the baffle plate 17 is provided with two through holes 171, the two carbon molecular sieves 18 respectively penetrate through the through holes 171 at the two sides in a movable way, the two ends of the two carbon molecular sieves 18 are respectively fixed with a sealing plate 19, and the adsorption tower 5 is provided with two linear driving mechanisms 20 for respectively driving the carbon molecular sieves 18 at the two sides to move; the nitrogen storage tank 7 is connected with a reverse gas pipe 136, the other end of the reverse gas pipe 136 is communicated with two gas branch pipes 1361, and the other ends of the two gas branch pipes 1361 are respectively connected with the top ends of the two adsorption towers 5; a connecting pipe A135 is connected between the bottom end of the adsorption tower 5 and the air inlet branch pipe 132 at the corresponding side; electromagnetic valves 14 are installed on a main intake pipe 131, an intake branch pipe 132, a main exhaust pipe 133, an exhaust branch pipe 134, a connection pipe a135, a reverse gas delivery pipe 136, a gas delivery branch pipe 1361, a connection pipe a137, and a connection pipe B138.

The intake branch pipe 132 and the exhaust branch pipe 134 are both communicated with the cavity on the right side of the partition 17, and the connection pipe a135 and the gas delivery branch pipe 1361 are both communicated with the cavity on the left side of the partition 17.

The gas cleaning assembly comprises a class C filter 8, a class T filter 9, a class a filter 10 and an activated carbon filter 11.

A degreasing device 3 is also arranged on the conduit between the air storage tank 4 and the gas purifying component.

The nitrogen storage tank 7 and the two adsorption towers 5 are provided with barometers 12.

The main exhaust pipe 133 is provided with a one-way intake valve 15.

The working principle of the utility model is as follows: the external gas is compressed by the air compressor 1 and then enters the buffer tank 2, impurities in the air can be filtered through the C-level filter 8, the T-level filter 9, the A-level filter 10 and the activated carbon filter 11, then compressed pure air enters the air storage tank 4, the air enters the adsorption tower 5 through the main air inlet pipe 131 and the air inlet branch pipe 132, the separation effect of the carbon molecular sieve on oxygen and nitrogen in the air is mainly based on different diffusion rates of the two gases on the surface of the carbon molecular sieve, the diffusion rate of oxygen molecules with smaller diameters is faster, more oxygen molecules enter micropores of the carbon molecular sieve, the diffusion rate of nitrogen molecules with larger diameters is slower, and the nitrogen molecules enter micropores of the carbon molecular sieve to be less, so that the enriched components of nitrogen can be obtained in a gas phase, and the characteristic that the difference of the adsorption amount of the carbon molecular sieve on oxygen and the nitrogen in a certain time is utilized, the full-automatic control system applies pressure adsorption according to a specific programmable cycle process, the nitrogen-oxygen separation is completed, and the nitrogen 133 with high purity is finally enters the nitrogen storage tank 7 through the air outlet branch pipe 134 and the main air outlet pipe; when the carbon molecular sieve 18 is regenerated, the two linear driving mechanisms 20 are controlled to start to work, the linear driving mechanisms 20 drive the carbon molecular sieve 18 to move, so that the positions of the two carbon molecular sieves 18 in the adsorption tower 5 are exchanged, then the system controls to open the electromagnetic valves 14 on the reverse gas pipe 136 and the gas transmission branch pipe 1361, nitrogen enters the cavity on the left side of the partition plate 17, the regeneration of the carbon molecular sieve 18 is realized through back blowing, normal nitrogen production work can be kept in the process, the shutdown is not needed, and the practicability is strong.

Example two

As shown in fig. 1-2, compared with the first embodiment, the instrument wind nitrogen system of the CCUS provided by the utility model further comprises a connecting pipe B139 disposed on the adsorption tower 5, wherein two ends of the connecting pipe B139 are disposed at the upper and lower ends of the right cavity of the partition 17, and the connecting pipe B139 is also provided with an electromagnetic valve 14; the top end of the cavity on the right side of the partition 17 is provided with a nitrogen concentration sensor 16.

In this embodiment, the nitrogen concentration sensor 16 is configured to detect the concentration of nitrogen at the top end of the adsorption tower 5, but when the detected concentration of nitrogen does not reach the set value, the system controls the electromagnetic valve 14 on the exhaust branch 1361 to be closed and opens the electromagnetic valve 14 on the connecting pipe B139, and the gas flows back to the bottom end of the adsorption tower 5 again to perform secondary purification, so that the purity of the nitrogen can be improved.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The utility model provides a CCUS's instrument wind nitrogen generation system which is characterized in that, including air compressor machine (1), buffer tank (2), cold dryer (6), gas purification subassembly, air storage tank (4), nitrogen gas holding vessel (7) and two adsorption towers (5); the air compressor comprises an air compressor (1), a buffer tank (2), a cold dryer (6), a gas purification assembly and an air storage tank (4), wherein the air compressor, the buffer tank (2), the cold dryer, the gas purification assembly and the air storage tank (4) are connected through guide pipes, the output end of the air storage tank (4) is connected with a total air inlet pipe (131), the other end of the total air inlet pipe (131) is communicated with two air inlet branch pipes (132), the other ends of the two air inlet branch pipes (132) are respectively connected with the bottom ends of two adsorption towers (5), a total exhaust pipe (133) is connected to the nitrogen storage tank (7), two exhaust branch pipes (134) are respectively communicated with the other ends of the total exhaust pipe (133), the other ends of the two exhaust branch pipes (134) are respectively connected with the top ends of the two adsorption towers (5), a communicating pipe A (137) is connected between the two air inlet branch pipes (132), and a communicating pipe B (138) is connected between the two exhaust branch pipes (134); the inside of the adsorption tower (5) is provided with a baffle plate (17), the cavities at the left side and the right side of the baffle plate (17) are internally provided with carbon molecular sieves (18), the two carbon molecular sieves (18) are positioned at different height positions, the baffle plate (17) is provided with two through holes (171), the two carbon molecular sieves (18) respectively and movably penetrate through the through holes (171) at the two sides, the two ends of the two carbon molecular sieves (18) are respectively and fixedly provided with sealing plates (19), and the adsorption tower (5) is provided with two linear driving mechanisms (20) for respectively driving the two carbon molecular sieves (18) at the two sides to move; the nitrogen storage tank (7) is connected with a reverse gas pipe (136), the other end of the reverse gas pipe (136) is communicated with two gas branch pipes (1361), and the other ends of the two gas branch pipes (1361) are respectively connected with the top ends of the two adsorption towers (5); a connecting pipe A (135) is connected between the bottom end of the adsorption tower (5) and the air inlet branch pipe (132) at the corresponding side; electromagnetic valves (14) are arranged on the main air inlet pipe (131), the air inlet branch pipe (132), the main air outlet pipe (133), the air outlet branch pipe (134), the connecting pipe A (135), the reverse air delivery pipe (136), the air delivery branch pipe (1361), the communicating pipe A (137) and the communicating pipe B (138).

2. The utility model relates to a meter-wind nitrogen generation system of the CCUS, which is characterized in that an air inlet branch pipe (132) and an air outlet branch pipe (134) are communicated with a cavity on the right side of a partition plate (17), and a connecting pipe A (135) and an air delivery branch pipe (1361) are communicated with a cavity on the left side of the partition plate (17).

3. The instrument wind nitrogen generation system of the CCUS according to claim 2, wherein a connecting pipe B (139) is arranged on the adsorption tower (5), two ends of the connecting pipe B (139) are respectively arranged at the upper end and the lower end of a cavity at the right side of the partition plate (17), and an electromagnetic valve (14) is also arranged on the connecting pipe B (139); the top end of the cavity on the right side of the partition plate (17) is provided with a nitrogen concentration sensor (16).

4. A CCUS meter-wind nitrogen system according to claim 1, wherein the gas cleaning assembly comprises a C-stage filter (8), a T-stage filter (9), an a-stage filter (10) and an activated carbon filter (11).

5. A CCUS meter-wind nitrogen system according to claim 1, characterized in that a deoiler (3) is also mounted on the conduit between the air storage tank (4) and the gas cleaning assembly.

6. The utility model relates to a CCUS meter-wind nitrogen system, which is characterized in that a nitrogen storage tank (7) and two adsorption towers (5) are provided with barometers (12).

7. A CCUS meter-wind nitrogen system according to claim 1, characterized in that the main exhaust pipe (133) is provided with a one-way inlet valve (15).