Efficient tail gas separator at inlet of carbon dioxide compressor

Abstract

The utility model relates to the field of tail gas purification treatment, and discloses an efficient tail gas separator at an inlet of a carbon dioxide compressor, a plurality of small cyclones are arranged at the tail gas inlet part in a barrel of the separator, and a blade assembly is arranged above outlets of the small cyclones to remove entrained moisture; the small cyclone consists of a small cyclone lower cone, a small cyclone straight cylinder section, a small cyclone air outlet, a small cyclone air inlet and a small cyclone air rising cap; and the small cyclones are fixed on the separator barrel through the cyclone lower supporting plate and the cyclone upper sealing plate and are uniformly distributed in the separator barrel, so that tail gas bias flow is avoided. Solid particles and water in tail gas can be effectively removed, so that abrasion and scaling of the compressor are reduced, the stability of the compressor is improved, the service life of the compressor is prolonged, and the maintenance frequency and cost of the compressor are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tail gas treatment equipment, concretely relates to a kind of carbon dioxide compressor inlet high-efficiency tail gas separator. BACKGROUND

[0002] With the improvement of global environmental protection consciousness and the implementation of carbon emission control policy, in current industrial production practice, carbon dioxide capture and recovery technology plays an important role in environmental protection and resource recycling. The mainstream technology currently used by factories is pressure swing adsorption. In the pressure swing adsorption process, carbon dioxide is effectively separated from the gas mixture. However, the tail gas produced during this process usually contains a certain amount of solid particles and moisture.

[0003] In order to further process and utilize this tail gas, it needs to be preliminarily pumped and depressurized by a water ring vacuum pump, and then sent to a CO2 compressor for compression to facilitate subsequent storage or reuse. However, under the current technical conditions, the solid particles and moisture entrained in the tail gas pose a serious challenge to the long-term operation of the compressor.

[0004] Specifically, these solid particles will cause wear and tear to the internal components of the compressor when circulating inside the compressor, and the moisture is prone to scaling in high-temperature and high-pressure environments. This wear and tear and scaling not only reduces the operating efficiency of the compressor and affects its performance, but also significantly shortens the service life of the compressor, increases maintenance costs and replacement frequency.

[0005] In view of this technical problem, a new type of tail gas treatment equipment is developed to effectively remove solid particles and moisture from the tail gas, thereby reducing compressor wear and tear and scaling, improving the stability and service life of the compressor, and reducing maintenance frequency and cost, which is of great significance for the development of carbon dioxide capture and recovery technology. SUMMARY

[0006] To overcome the shortcomings of the prior art, the utility model provides a kind of carbon dioxide compressor inlet high-efficiency tail gas separator, effectively removes solid particles and moisture from the tail gas, thereby reducing compressor wear and tear and scaling, improving the stability and service life of the compressor, and reducing compressor maintenance frequency and cost.

[0007] The technical scheme of the utility model is: a kind of carbon dioxide compressor inlet high-efficiency tail gas separator, including separator cylinder, its characterized in that, multiple small cyclones are arranged at the tail gas inlet part in the separator cylinder, and a vane assembly is arranged above the small cyclone outlet to remove the entrained moisture;The small cyclone is composed of a small cyclone lower cone, a small cyclone straight cylinder section, a small cyclone gas outlet, a small cyclone gas inlet and a small cyclone gas cap;

[0008] The small cyclones are fixed on the separator cylinder through cyclone lower support plates and cyclone upper sealing plates, and are evenly distributed in the inside of the separator cylinder, so that tail gas deflection is avoided;

[0009] The small cyclone lower cone is fixed on the cylinder through the taper structure and the cyclone lower support plate, the small cyclone straight cylinder section is fixed on the cylinder through the straight cylinder type and the cyclone upper sealing plate, the small cyclone gas outlet is in the form of a straight cylinder and passes through the cyclone upper sealing plate, and a small cyclone gas lifting cap is arranged at the outlet end to avoid the flow of condensed liquid, and the small cyclone gas inlet is connected with the small cyclone straight cylinder section in the form of a volute.

[0010] The blade assembly is in the form of a blade, and blade sealing plates are arranged at the upper and lower portions of the blade assembly and fixed on the cylinder, a liquid storage tank is arranged at the bottom of the blade assembly and connected with a liquid downpipe, and the water separated by the blade assembly is branched to the cyclone upper sealing plate through the liquid downpipe.

[0011] Further, the gas inlet is arranged at the middle section of the cyclone lower support plate and the cyclone upper sealing plate.

[0012] Further, a liquid discharge port is arranged at the bottom of the separator, and a purge port is arranged at the vertical position of the outlet, so that the solid particles separated by the cyclone are prevented from being agglomerated and clogging the liquid discharge port.

[0013] Further, a condensed liquid outlet is arranged above the cyclone upper sealing plate, and the liquid flowing down the liquid downpipe is discharged through the condensed liquid outlet.

[0014] Further, a gas outlet is arranged at the top of the separator above the blade assembly, and the tail gas after the blade assembly is discharged through the gas outlet.

[0015] Further, pressure detection ports are arranged at the front end and the rear end of the gas inlet of the blade assembly, so that the separation of the blade assembly is monitored through pressure difference.

[0016] Further, two liquid level detection ports are arranged below the cyclone lower support plate, one of which is close to the small cyclone lower cone, and the other of which is close to the bottom of the separator, so that the separated condensed liquid is monitored and backflow is prevented.

[0017] The utility model has the following beneficial effects:

[0018] (1) The utility model provides a kind of carbon dioxide compressor inlet high-efficiency tail gas separator, multiple small cyclones are arranged at tail gas inlet part as the processing means for removing solid particles, and the size and quantity of small cyclone can be designed according to actual situation.

[0019] (2) The utility model provides a kind of carbon dioxide compressor inlet high-efficiency tail gas separator, blade assembly is arranged above the small cyclone outlet to remove water entrained;Blade assembly can adjust filter area and size according to actual situation.

[0020] (3) The utility model provides a kind of carbon dioxide compressor inlet high-efficiency tail gas separator, differential pressure system is arranged to monitor and protect vane assembly, liquid level monitoring system is arranged, the removal efficiency of small cyclone is protected, avoid reverse flow phenomenon, while additionally adding purging port avoids the hardening blockage of liquid discharge port. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a kind of carbon dioxide compressor inlet high-efficiency tail gas separator structure schematic diagram;

[0022] Figure 2 It is small cyclone structure schematic diagram;

[0023] Figure 3 It is small cyclone installation overhead view;

[0024] The mark of each component in the drawing is as follows:

[0025] 1-cylinder body;2-small cyclone;3-cyclone lower support plate;4-cyclone upper sealing plate;5-liquid condensate outlet;6-vane assembly;7-liquid drop pipe;8-liquid storage tank;9-vane sealing plate;10-gas outlet;11-liquid discharge port;12-purging port;13-liquid level monitoring port;14-pressure monitoring port;15-gas inlet;21-small cyclone lower cone;22-small cyclone straight cylinder section;23-small cyclone gas outlet;24-small cyclone gas inlet;25-small cyclone gas cap. DETAILED DESCRIPTION

[0026] As Figure 1 , Figure 2 , Figure 3 Indicated, the utility model embodiment a kind of carbon dioxide compressor inlet high-efficiency tail gas separator, mainly by cylinder body 1, remove solid particles small cyclone 2 and remove moisture vane assembly 6 are composed.

[0027] Small cyclone 2 is composed of small cyclone lower cone 21, small cyclone straight cylinder section 22, small cyclone gas outlet 23, small cyclone gas inlet 24, small cyclone gas cap 25.

[0028] Pretreated carbon dioxide tail gas is evenly entered into small cyclone 2 inside by small cyclone gas inlet 24 by gas inlet 15 located in the middle section of cyclone lower support plate 3 and cyclone upper sealing plate 4, gas-solid separation is completed by small cyclone 2, gas phase enters vane assembly 6 by small cyclone gas outlet 23, solid phase is discharged into separator lower part and tail gas entrained liquid condensate is discharged from separator by bottom liquid discharge port 11.

[0029] Gas phase entering vane assembly 6, water is separated by vane and flows into liquid storage tank 8 at the lower end of vane assembly and flows to cyclone upper sealing plate 4 by liquid drop pipe 7, then is discharged by liquid condensate outlet 5 above cyclone upper sealing plate 4.

[0030] The exhaust gas treated by the vane assembly is discharged from the separator through the gas outlet 10.

Claims

1. A carbon dioxide compressor inlet high efficiency tail gas separator comprising a separator cylinder (1) characterised in that, A plurality of small cyclones (2) are arranged at the tail gas inlet part of the separator cylinder (1), and a vane assembly is arranged above the small cyclone outlet to remove the entrained water; the small cyclone (2) is composed of a small cyclone lower cone (21), a small cyclone straight cylinder section (22), a small cyclone gas outlet (23), a small cyclone gas inlet (24), and a small cyclone gas cap (25); The small cyclone (2) is fixed on the separator cylinder (1) through a cyclone lower support plate (3) and a cyclone upper sealing plate (4), and is evenly distributed in the separator cylinder (1) to avoid tail gas deflection; The small cyclone lower cone (21) is a conical structure and is fixed on the separator cylinder (1) through the cyclone lower support plate (3); the small cyclone straight cylinder section (22) is a straight cylinder at the upper part of the small cyclone and is fixed on the separator cylinder (1) through the cyclone upper sealing plate (4); the small cyclone gas outlet (23) is a straight cylinder inside the small cyclone and penetrates through the cyclone upper sealing plate (4), and the outlet end is provided with the small cyclone gas cap (25); the small cyclone gas inlet (24) is in the form of a volute and is connected with the small cyclone straight cylinder section (22); The vane assembly (6) adopts a vane structure, and is fixed on the separator cylinder (1) through vane sealing plates (9) arranged above and below; the vane assembly (6) is provided with a liquid storage groove (8) connected with a downcomer (7) at the bottom, and the water separated by the vane assembly is flowed to the cyclone upper sealing plate (4) through the downcomer (7).

2. A high efficiency tail gas separator for a carbon dioxide compressor inlet as claimed in claim 1, characterized in that, An inlet (15) is arranged at the middle section of the cyclone lower support plate (3) and the cyclone upper sealing plate (4).

3. A high efficiency tail gas separator for a carbon dioxide compressor inlet as claimed in claim 2, characterized in that, A liquid discharge port (11) is arranged at the bottom of the separator, and a purge port (12) is arranged at the vertical outlet to prevent the solid particles separated by the cyclone from being caked and blocking the liquid discharge port.

4. A high efficiency tail gas separator for a carbon dioxide compressor inlet as defined in claim 3, wherein the cyclone A condensate outlet (5) is arranged above the upper sealing plate (4), and the liquid flowed down through the downcomer (7) is discharged through the condensate outlet (5).

5. A high efficiency tail gas separator for a carbon dioxide compressor inlet as claimed in claim 4, characterized in that, An air outlet (10) is arranged above the vane assembly (6) at the top of the separator, and the tail gas after the vane assembly is discharged through the air outlet (10).

6. A high efficiency exhaust separator for a carbon dioxide compressor inlet as defined in claim 1, wherein, Pressure detection ports (14) are arranged at the front end and the rear end of the vane assembly inlet, respectively, to monitor the separation of the vane assembly through pressure difference.

7. A high efficiency exhaust separator for a carbon dioxide compressor inlet as defined in claim 1, wherein, Two liquid level detection ports (13) are arranged below the cyclone lower support plate (3), one close to the small cyclone lower cone (21) and the other close to the bottom of the separator, to monitor the separated condensate and prevent backflow.

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