CN117753157B - Low Wen Ninghua carbon capture equipment of marine host tail gas - Google Patents
Low Wen Ninghua carbon capture equipment of marine host tail gas Download PDFInfo
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- CN117753157B CN117753157B CN202410198069.3A CN202410198069A CN117753157B CN 117753157 B CN117753157 B CN 117753157B CN 202410198069 A CN202410198069 A CN 202410198069A CN 117753157 B CN117753157 B CN 117753157B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 152
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 68
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 65
- 238000010790 dilution Methods 0.000 claims abstract description 38
- 239000012895 dilution Substances 0.000 claims abstract description 38
- 238000000926 separation method Methods 0.000 claims abstract description 35
- 238000005406 washing Methods 0.000 claims abstract description 25
- 239000003085 diluting agent Substances 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 9
- 238000007865 diluting Methods 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 239000012530 fluid Substances 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 26
- 238000007790 scraping Methods 0.000 claims description 21
- 239000003507 refrigerant Substances 0.000 claims description 16
- 238000009792 diffusion process Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 14
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- 239000007789 gas Substances 0.000 description 73
- 235000011089 carbon dioxide Nutrition 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 102000003846 Carbonic anhydrases Human genes 0.000 description 2
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- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
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- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
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Abstract
The application relates to the technical field of carbon dioxide trapping, in particular to low Wen Ninghua carbon trapping equipment for marine host tail gas, wherein an air inlet is formed in a washing tank, a spray head is arranged in the washing tank and used for spraying and washing the introduced tail gas, a dilution tank is communicated with the washing tank through a first pipeline, a diluent for diluting carbon dioxide is filled in the dilution tank, a drying tank is communicated with the dilution tank through a second pipeline, and a desublimation separation tank is communicated with the drying tank through a third pipeline. The application has the beneficial effects that: the stirring device is used for improving the absorption effect of carbon dioxide in the tail gas, reducing the pressure of higher carbon dioxide content in the subsequent treatment process, and meanwhile, the stirring device does not need an additional driving structure, so that the driving can be realized by virtue of the high-temperature tail gas of the ship, the loss of resource cost can be reduced, and the defect that too many machines cannot be installed because the space of the ship is limited is overcome.
Description
Technical Field
The invention belongs to the technical field of carbon dioxide trapping, and particularly relates to low Wen Ninghua carbon trapping equipment for marine host tail gas.
Background
The problem of ship emission pollution is getting more and more attention in the world, and the limitation on ship pollution discharge is becoming more and more strict. Meanwhile, an Emission Control Area (ECA) is established at home and abroad, namely a mandatory area which is arranged in a port peripheral water area and is required to meet the emission requirement. Currently, the establishment of emission control zones has also become a major trend in compliance with environmental requirements, and the number of emission control zones will gradually increase in the future. Under the background, LNG is rapidly developed as a clean energy, and the world energy market is more and more active, so that LNG fuel is directly pushed to be one of main fuels of ships, and related industries are driven to rapidly develop.
After desulfurization, denitrification and water removal treatment, the ship tail gas contains a large amount of nitrogen, carbon dioxide, various hydrocarbons, oxygen and smoke
And the components of the gas particles are complex, and the treatment gas quantity is huge. Taking a common 4 Mo Mali engine configured by a 30 ten thousand ton bulk cargo ship as an example, the power of a ship main engine is about 30MW without considering the power of a ship generator, the CO2 emission amount in the tail gas emission is about 18.6 t/h, the NOX emission amount is about 0.234 t/h, the CO emission amount is about 0.03 t/h and the THC (total hydrocarbon) emission amount is about 0.018 t/h. It can be seen that the CO2 emission in the ship tail gas is concentrated, the emission is huge, and the development of the carbon emission reduction scheme with the CO2 scale utilization technology as the core can bring huge carbon emission reduction potential and economic benefit.
As disclosed in patent No. CN 115414784A, a device for capturing carbon dioxide in marine tail gas, comprising: the heat exchange tower is used for cooling the ship tail gas entering the heat exchange tower; the absorption tower is internally provided with catalytic filler so as to enable seawater entering the absorption tower to react with ship tail gas entering the absorption tower; wherein the heat exchange tower is communicated with the absorption tower; and cooling the ship tail gas by the heat exchange tower, then entering the absorption tower, absorbing carbon dioxide in the ship tail gas by seawater entering the absorption tower, and then discharging the ship tail gas out of the absorption tower. The carbonic anhydrase in the catalytic filler is used for catalyzing the hydration reaction between the carbon dioxide and the seawater, so that the seawater does not need to be heated and regenerated, and the captured carbon dioxide does not need to be liquefied and stored, thereby greatly reducing the energy consumption and the volume of the system; the carbonic anhydrase is fixed on the filler, so that the mass transfer rate is increased, and the total volume of the absorption tower is reduced, but in the patent, the absorption tower cannot play a uniform absorption effect on carbon dioxide in tail gas, the content of carbon dioxide in tail gas at an inlet is sufficient, and as the tail gas rises, the content of carbon dioxide in the tail gas at a position reaching a discharge port is reduced, so that the filler in the absorption tower at the inlet inevitably loses catalytic effect in advance along with the accumulation of time, and the device cannot produce absorption effect on carbon dioxide in the tail gas.
Furthermore, in the low Wen Ninghua carbon trapping technology of the prior art, dry ice formed after low-temperature desublimation is easy to form accumulation at the exhaust outlet, so that the exhaust outlet is blocked.
Disclosure of Invention
The invention aims to provide low Wen Ninghua carbon capture equipment for marine host tail gas, so as to solve the problems in the background technology.
In order to achieve the above object, there is provided a low Wen Ninghua carbon capture device for marine host tail gas, comprising:
The washing tank is provided with an air inlet, a spray head is arranged in the washing tank and used for spraying and washing the introduced tail gas, a circulating water source is externally connected to the tank body of the washing tank, and a purifying tank is arranged on the water source in the circulating process to purify the water source;
The dilution tank is communicated with the washing tank through a first pipeline, the interior of the dilution tank is filled with a dilution liquid for diluting carbon dioxide, a stirring device for stirring the liquid is further arranged in the dilution tank, the dilution liquid comprises water or an organic solvent such as methanol, ethanol, n-hexane, benzene and toluene, and the dilution liquid is selected according to practical application;
The drying tank is communicated with the dilution tank through a second pipeline, a heating component for heating tail gas is arranged in the drying tank, a corresponding water vapor discharge port is also arranged in the drying tank, and a corresponding water vapor permeable membrane is arranged at the water vapor discharge port to prevent other gases from passing through;
The device comprises a desublimation separating tank, wherein the desublimation separating tank is communicated with a drying tank through a third pipeline, a carbon dioxide capturing component, a scraping component, a spraying component and a separating plate are arranged in the desublimation separating tank, and a tail gas discharge port is formed in the desublimation separating tank.
Further, the stirring device comprises a Tesla turbine, a diffusion cover, a roll shaft and a blade, wherein the first pipeline penetrates through the tank body of the dilution tank and is communicated with the Tesla turbine, the output end of the Tesla turbine is connected with the roll shaft, the blade is arranged at the tail end of the roll shaft and is inserted into the dilution liquid, the fluid outlet of the Tesla turbine and the roll shaft are positioned at the same side, one end of the diffusion cover is connected with the fluid outlet of the Tesla turbine, the other end of the diffusion cover is inserted into the dilution liquid, high-temperature tail gas is fast due to the fact that the diffusion cover is fast in speed, when the high-temperature tail gas passes through the Tesla turbine, the high-temperature tail gas rubs with a disc in the Tesla turbine and then drives the roll shaft to rotate, so that the blade also stirs the dilution liquid in the dilution tank along with the rotation, and carbon dioxide in the tail gas is dissolved and diluted thoroughly.
Further, the carbon dioxide trapping assembly comprises a first trapping plate and a second trapping plate, the first trapping plate is of a circular tube structure, the diameter of an upper opening of the first trapping plate is larger than that of a lower opening of the first trapping plate, the second trapping plate is of a circular tube structure, the diameter of the lower opening of the second trapping plate is larger than that of the upper opening of the second trapping plate, the first trapping plate is located above the second trapping plate, and a plurality of groups of carbon dioxide trapping assemblies are sequentially arranged from top to bottom.
Further, the scraping component comprises a Laval pipe, fan blades, a rotating shaft, a lantern ring and a scraping plate, wherein the Laval pipe is arranged at the top of an inner cavity of the desublimation separation tank and is communicated with the third pipeline, the rotating shaft is arranged on the separation plate through a bearing, the fan blades are arranged at the top of the rotating shaft and are positioned in the Laval pipe, a plurality of lantern rings are sequentially arranged on the rotating shaft from top to bottom, the scraping plate is fixedly connected with the rotating shaft through the lantern ring and is driven by the rotating shaft to scrape solid carbon dioxide attached to the surface of the carbon dioxide capturing component, according to the effect of fluid, when the fluid is narrowed by width, the speed of the fluid is increased, and when the accelerated fluid passes through a wider area again in a short time, the accelerated fluid is sprayed outwards, so that a faster speed is obtained, tail gas is collided with the fan blades, and the rotating shaft and the scraping plate are driven to rotate under the action of the high-speed tail gas, so that dry ice attached to the surfaces of the first capturing plate and the second capturing plate are scraped.
Further, spray the subassembly and include water pump, fourth pipeline, nozzle and leakage fluid dram, the nozzle is annular setting along the inner wall of desublimation separator tank, the refrigerant that the nozzle jetted out forms the water curtain at the surface of carbon dioxide entrapment subassembly, the one end and the leakage fluid dram of fourth pipeline are connected, and the other end runs through desublimation separator tank top and communicates with the nozzle, the water pump is installed on the fourth pipeline, and the water pump is located the outside of desublimation separator tank, the refrigerant adopts nitrogen gas, and the water pump is taken out liquid nitrogen gas from the leakage fluid dram of desublimation separator tank bottom, then is through the circulation of nozzle blowout completion refrigerant again.
Further, the Laval pipe is of a three-section structure, the middle part of the Laval pipe is a straight pipe, the two ends of the straight pipe are respectively a closing pipe and a flaring pipe, the closing pipe is an air inlet pipe, the flaring pipe is an air outlet pipe, and the fan blades are positioned in the flaring pipe and are arranged in the area.
Further, a through hole for filtering the refrigerating fluid is formed in the separation plate.
Further, a connecting port for communicating the dilution tank with the first pipeline is positioned on the curved surface of the dilution tank, and a connecting port for communicating the dilution tank with the second pipeline is positioned in an area above the liquid level of the dilution liquid.
Further, the maximum diameters of the first trapping plate and the second trapping plate are smaller than the inner diameter of the desublimation separating tank, a fixing rod for fixing the carbon dioxide trapping assembly is arranged on the inner wall of the desublimation separating tank, and the diameter of the lower opening of the first trapping plate is larger than the diameter of the upper opening of the second trapping plate.
Further, the heating component specifically adopts an electric heating wire, a carbon dioxide barrier film is arranged at the tail gas discharge port, and the carbon dioxide barrier film is specifically a polyimide film.
Compared with the prior art, the invention has the beneficial effects that:
1. The stirring device is arranged in the diluting tank to improve the absorption effect of carbon dioxide in the tail gas, reduce the pressure of higher carbon dioxide content in the subsequent treatment process, and meanwhile, the stirring device does not need an additional driving structure, so that the driving can be realized by virtue of the high-temperature tail gas of the ship, the loss of resource cost can be reduced, and the defect that too many machines cannot be installed because the space of the ship is limited is overcome;
2. the scraping effect on the dry ice is realized by arranging the scraping component in the desublimation separating tank, the effect of accumulation and blockage of the dry ice at the exhaust outlet of the tail gas is prevented, and the power required by the scraping component does not need to provide an additional driving mechanism, so that the dry ice can be driven by the high-temperature tail gas of the ship;
3. In the process of the desublimation separation of the carbon dioxide in the tail gas, the carbon dioxide sequentially passes through the trapping areas of a plurality of layers from top to bottom, so that the desublimation effect of the carbon dioxide in the tail gas is greatly improved, the carbon dioxide is prevented from dissociating to the bottom of the tank body, and accordingly, a blockage is formed at the position of a tail gas discharge port.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a sectional view showing the structure of the desublimation separation tank according to the present invention.
The meaning of each reference sign in the figure is:
1. A washing tank; 2. an air inlet; 3. a dilution tank; 4. a stirring device; 401. a tesla turbine; 402. a diffusion cover; 403. a roll shaft; 404. a paddle; 5. a drying tank; 6. a first pipe; 7. a second pipe; 8. a third conduit; 9. a desublimation separation tank; 10. a carbon dioxide capture assembly; 1001. a first trap plate; 1002. a second trap plate; 11. a scraping assembly; 1101. a Laval pipe; 1102. a fan blade; 1103. a rotating shaft; 1104. a collar; 1105. a scraper; 12. a spray assembly; 1201. a water pump; 1202. a fourth conduit; 1203. a nozzle; 1204. a liquid outlet; 13. a separation plate; 14. and a tail gas discharge port.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Referring to fig. 1-3, there is provided a low Wen Ninghua carbon capture device for marine host tail gas, comprising:
the washing device comprises a washing tank 1, wherein an air inlet 2 is formed in the washing tank 1, a spray head is arranged in the washing tank 1 and used for spraying and washing the introduced tail gas, a circulating water source is externally connected to a tank body of the washing tank 1, and a purifying tank is arranged in the water source to purify the water source in the circulating process;
The dilution tank 3 is communicated with the washing tank 1 through a first pipeline 6, a diluent for diluting carbon dioxide is filled in the dilution tank 3, a stirring device 4 for stirring the liquid is further arranged in the dilution tank 3, the diluent comprises water or an organic solvent such as methanol, ethanol, n-hexane, benzene and toluene, and the diluent is selected according to practical application;
The drying tank 5 is communicated with the dilution tank 3 through a second pipeline 7, a heating component for heating tail gas is arranged in the drying tank 5, a corresponding water vapor discharge port is also arranged in the drying tank 5, a corresponding water vapor permeable membrane is arranged at the water vapor discharge port to prevent other gases from passing through, and the effect of removing water vapor is to prevent the water vapor from sublimating into ice when entering the desublimation separation tank 9, and the ice is not easy to separate from the dry ice formed by the desublimation of carbon dioxide, so that the dry ice is separated in advance in the drying tank 5;
The device comprises a desublimation separation tank 9, wherein the desublimation separation tank 9 is communicated with a drying tank 5 through a third pipeline 8, a carbon dioxide capturing component 10, a scraping component 11, a spraying component 12 and a separation plate 13 are arranged in the desublimation separation tank 9, a through hole for filtering refrigerating fluid is formed in the separation plate 13, and a tail gas discharge port 14 is formed in the desublimation separation tank 9;
As shown in fig. 1, the wash tank 1, the first pipe 6, the dilution tank 3, the second pipe 7, the drying tank 5, the third pipe 8 and the desublimation separation tank 9 are sequentially connected, and the ship tail gas enters from the wash tank 1 and is finally discharged from the desublimation separation tank 9.
As shown in fig. 2:
The stirring device 4 comprises a Tesla turbine 401, a diffusion cover 402, a roller shaft 403 and a blade 404, wherein the first pipeline 6 penetrates through the tank body of the dilution tank 3 and is communicated with the Tesla turbine 401, the output end of the Tesla turbine 401 is connected with the roller shaft 403, the blade 404 is arranged at the tail end of the roller shaft 403 and is inserted into the diluent, the fluid outlet of the Tesla turbine 401 is positioned at the same side as the roller shaft 403, one end of the diffusion cover 402 is connected with the fluid outlet of the Tesla turbine 401, the other end of the diffusion cover 402 is inserted into the diluent, high-temperature tail gas is fast in speed, and rubs with a disc inside the Tesla turbine 401 when passing through the Tesla turbine 401 and then drives the roller shaft 403 to rotate, so that the blade 404 stirs the diluent in the dilution tank 3 along with the rotation, and the carbon dioxide in the tail gas is dissolved and diluted thoroughly;
It should be noted that, in order to ensure that the exhaust gas can be brought into contact with the diluent at the first time, the connection port of the diluent tank 3 communicating with the first pipe 6 is located on the curved surface of the diluent tank 3, and the connection port of the diluent tank 3 communicating with the second pipe 7 is located in a region above the liquid level of the diluent, i.e. the liquid level of the diluent in the diluent tank 3 must submerge the diffusion cover 402, while the first pipe 6 is preferably set at the same level as the air inlet of the tesla turbine 401, and the second pipe 7 must be set at a level exceeding the liquid level of the diluent, which avoids that the exhaust gas does not come into contact with the diluent, and prevents the exhaust gas from directly entering the drying tank 5 from the second pipe 7, as shown in fig. 2, the dotted line is the liquid level line of the diluent.
As shown in fig. 2 and 3:
The carbon dioxide capturing assembly 10 comprises a first capturing plate 1001 and a second capturing plate 1002, the first capturing plate 1001 is in a circular tube structure, the diameter of an upper opening of the first capturing plate is larger than that of a lower opening of the first capturing plate, the second capturing plate 1002 is in a circular tube structure, the diameter of the lower opening of the second capturing plate is larger than that of the upper opening of the second capturing plate, the first capturing plate 1001 is positioned above the second capturing plate 1002, and a plurality of groups of carbon dioxide capturing assemblies 10 are sequentially arranged from top to bottom;
It is noted that the maximum diameter of the first collecting plate 1001 and the second collecting plate 1002 is smaller than the inner diameter of the desublimation separating tank 9, a fixing rod for fixing the carbon dioxide collecting assembly 10 is arranged on the inner wall of the desublimation separating tank 9, the diameter of the lower opening of the first collecting plate 1001 is larger than the diameter of the upper opening of the second collecting plate 1002, after the carbon dioxide is desublimated, the dry ice attached to the first collecting plate 1001 is cleaned, then slides down to the second collecting plate 1002 along the gradient of the first collecting plate 1001, and finally rolls off on the separating plate 13 uniformly from the surface of the second collecting plate 1002;
It should be noted that, during the process of desublimation of carbon dioxide, the tail gas is moved from top to bottom, in this process, that is, the carbon dioxide passes through the carbon dioxide capturing assemblies 10 of several groups, and the refrigerant sprayed by the nozzles 1203 forms a thin water curtain on the surfaces of the first capturing plate 1001 and the second capturing plate 1002, that is, the carbon dioxide in the tail gas needs to move to the tail gas discharge port below the desublimation separating tank 9 at least needs to pass through the water curtain formed by several layers of refrigerant, so that the carbon dioxide in the tail gas is fully contacted with the water curtain formed by the refrigerant, and then desublimates and forms dry ice, after this process, the content of the gaseous carbon dioxide existing in the desublimation separating tank 9 is negligible, so as to avoid the formation of dry ice at the tail gas discharge port and blockage.
As shown in fig. 2 and 3:
The scraping assembly 11 comprises a laval pipe 1101, fan blades 1102, a rotating shaft 1103, a collar 1104 and a scraping plate 1105, wherein the laval pipe 1101 is arranged at the top of an inner cavity of the desublimation separation tank 9 and is communicated with the third pipeline 8, the rotating shaft 1103 is arranged on the separation plate 13 through a bearing, the fan blades 1102 are arranged at the top of the rotating shaft 1103 and are positioned in the laval pipe 1101, a plurality of collar 1104 are sequentially arranged on the rotating shaft 1103 from top to bottom, the scraping plate 1105 is fixedly connected with the rotating shaft 1103 through the collar 1104 and is driven by the rotating shaft 1103 to scrape solid carbon dioxide attached to the surface of the carbon dioxide capturing assembly 10, according to the effect of fluid, when the fluid is narrowed by a wide range, the speed of the fluid is increased, and when the accelerated fluid passes through a wider range again, the accelerated fluid is accelerated outwards, so that a faster speed is obtained, tail gas is impacted by the fan blades 1102, and under the effect of the tail gas at a high speed, the fan blades 1102 drive the rotating shaft and the scraping plate 1105 to scrape the solid carbon dioxide attached to the surfaces of the first capturing plate 1001 and the second capturing plate 1002;
It should be noted that the laval pipe 1101 is in a three-section structure, the middle portion of the laval pipe is a straight pipe, two ends of the straight pipe are respectively a closing pipe and a flaring pipe, the closing pipe is an air inlet pipe, the flaring pipe is an air outlet pipe, the fan blades 1102 are located in the flaring pipe, and the fan blades 1102 are arranged in the area, because the maximum flow velocity of the tail gas in the area is obtained according to the principle of the laval pipe 1101, and the dry ice removing effect of the scraping assembly 11 is improved.
As shown in fig. 1 and 2:
The spray assembly 12 comprises a water pump 1201, a fourth pipeline 1202, a nozzle 1203 and a liquid outlet 1204, the nozzle 1203 is arranged in a ring shape along the inner wall of the desublimation separation tank 9, the refrigerant sprayed by the nozzle 1203 forms a water curtain on the surface of the carbon dioxide capturing assembly 10, one end of the fourth pipeline 1202 is connected with the liquid outlet 1204, the other end of the fourth pipeline 1202 penetrates through the top of the desublimation separation tank 9 and is communicated with the nozzle 1203, the water pump 1201 is arranged on the fourth pipeline 1202, the water pump 1201 is positioned outside the desublimation separation tank 9, the refrigerant adopts nitrogen, the water pump 1201 pumps out the liquid nitrogen from the liquid outlet 1204 at the bottom of the desublimation separation tank 9, and then the liquid nitrogen is sprayed out through the nozzle 1203 to complete the circulation of the refrigerant.
The working process comprises the following steps:
the tail gas of the ship firstly enters the washing tank 1, and a spray nozzle is arranged in the washing tank 1 to primarily wash the tail gas, so as to reduce floating particles or other sundries in the tail gas;
The tail gas after preliminary cleaning and washing enters the diluting tank 3 through the first pipeline 6, water or organic solvent filled in the diluting tank 3 dilutes and dissolves carbon dioxide in the tail gas so as to reduce the pressure for treating the carbon dioxide in the subsequent steps, the tail gas with high temperature and high pressure rubs with a disc in the Tesla turbine 401 after entering the Tesla turbine 401 and then drives the roll shaft 403 to rotate, so that the blades 404 stir diluent in the diluting tank 3 along with rotation, the carbon dioxide in the tail gas is dissolved and diluted more thoroughly, and meanwhile, a fluid outlet of the Tesla turbine 401 is also arranged on the same side of the roll shaft 403, so that the tail gas is diffused by the diffusion cover 402 after passing through the fluid outlet and starts to contact with the diluent;
The diluted tail gas is discharged from the diluent and then enters the drying tank 5 through the second pipeline 7, the tail gas is heated by a heating component arranged in the drying tank 5, a corresponding water vapor discharge port is also arranged in the drying tank 5, a corresponding water vapor permeable membrane is arranged at the water vapor discharge port to prevent other gases from passing through, the effect of removing water vapor is to prevent the water vapor from sublimating into ice when entering the desublimation separation tank 9, and the ice is not easy to separate from the dry ice formed by the desublimation of carbon dioxide, so that the dry ice is separated in advance in the drying tank 5;
The tail gas heated and separated from the water vapor enters the laval tube 1101 in the desublimation separation tank 9 through the third pipe 8, and according to the effect of the fluid, when the fluid is narrowed from wide, the speed of the fluid is increased, and when the accelerated fluid passes through a wider area again in a short time, the accelerated fluid is sprayed outwards at this time, so that a faster speed is obtained, the tail gas hits the fan blades 1102, and the fan blades 1102 drive the rotating shaft 1103 and the scraping plate 1105 to rotate under the action of the high-speed tail gas, so that dry ice attached to the surfaces of the first collecting plate 1001 and the second collecting plate 1002 is scraped off;
In this process, the water pump 1201 ejects the refrigerant from the nozzle 1203, and the carbon dioxide in the tail gas is sublimated under the action of the refrigerant, so that dry ice is formed on the surfaces of the first collecting plate 1001 and the second collecting plate 1002 and scraped off on the separating plate 13 under the action of the scraping component 11, and the dry ice and the refrigerant are separated by the separating plate 13 due to the through holes formed in the separating plate 13 through which the refrigerant can flow, and the water pump 1201 again pumps out the liquid refrigerant flowing at the bottom of the inner cavity of the desublimation separating tank 9, and the liquid refrigerant is ejected again through the nozzle 1203, thereby completing the refrigeration cycle.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A low Wen Ninghua carbon capture device for marine host tail gas, comprising:
The device comprises a washing tank (1), wherein an air inlet (2) is formed in the washing tank (1), and a spray head is arranged in the washing tank (1) and used for spraying and washing the introduced tail gas;
The dilution device comprises a dilution tank (3), wherein the dilution tank (3) is communicated with a washing tank (1) through a first pipeline (6), a diluent for diluting carbon dioxide is filled in the dilution tank (3), and a stirring device (4) for stirring the liquid is further arranged in the dilution tank (3);
The drying tank (5) is communicated with the dilution tank (3) through a second pipeline (7), and a heating component for heating tail gas is arranged in the drying tank (5);
The device comprises a desublimation separation tank (9), wherein the desublimation separation tank (9) is communicated with a drying tank (5) through a third pipeline (8), a carbon dioxide capturing component (10), a scraping component (11), a spraying component (12) and a separation plate (13) are arranged in the desublimation separation tank (9), and a tail gas discharge port (14) is formed in the desublimation separation tank (9);
The stirring device (4) comprises a Tesla turbine (401), a diffusion cover (402), a roller shaft (403) and a blade (404), wherein the first pipeline (6) penetrates through the tank body of the dilution tank (3) and is communicated with the Tesla turbine (401), the output end of the Tesla turbine (401) is connected with the roller shaft (403), the blade (404) is arranged at the tail end of the roller shaft (403) and is inserted into diluent, the fluid outlet of the Tesla turbine (401) is positioned on the same side as the roller shaft (403), one end of the diffusion cover (402) is connected with the fluid outlet of the Tesla turbine (401), and the other end of the diffusion cover is inserted into the diluent;
The carbon dioxide capturing assembly (10) comprises a first capturing plate (1001) and a second capturing plate (1002), the first capturing plate (1001) is of a circular tube structure, the diameter of an upper opening of the first capturing plate is larger than that of a lower opening of the first capturing plate, the second capturing plate (1002) is of a circular tube structure, the diameter of the lower opening of the second capturing plate is larger than that of the upper opening of the second capturing plate, the first capturing plate (1001) is located above the second capturing plate (1002), and a plurality of groups of carbon dioxide capturing assemblies (10) are sequentially arranged from top to bottom;
The scraping assembly (11) comprises a Laval pipe (1101), fan blades (1102), a rotating shaft (1103), a sleeve ring (1104) and a scraping plate (1105), wherein the Laval pipe (1101) is arranged at the top of an inner cavity of the desublimation separation tank (9) and is communicated with the third pipeline (8), the rotating shaft (1103) is arranged on the separation plate (13) through a bearing, the fan blades (1102) are arranged at the top of the rotating shaft (1103) and are positioned in the Laval pipe (1101), the number of the sleeve rings (1104) is a plurality of the sleeve rings (1104) and are sequentially arranged on the rotating shaft (1103) from top to bottom, and the scraping plate (1105) is fixedly connected with the rotating shaft (1103) through the sleeve rings (1104) and scrapes solid carbon dioxide attached to the surface of the carbon dioxide capturing assembly (10) under the driving of the rotating shaft (1103);
Spray subassembly (12) include water pump (1201), fourth pipeline (1202), nozzle (1203) and leakage fluid dram (1204), the inner wall along desublimation knockout drum (9) of nozzle (1203) is annular setting, the refrigerant that nozzle (1203) jetted out forms the water curtain at the surface of carbon dioxide entrapment subassembly (10), the one end and the leakage fluid dram (1204) of fourth pipeline (1202) are connected, and the other end runs through desublimation knockout drum (9) top and communicates with nozzle (1203), water pump (1201) are installed on fourth pipeline (1202), and water pump (1201) are located the outside of desublimation knockout drum (9).
2. The low Wen Ninghua carbon capture device for marine host tail gas of claim 1, wherein: the Laval pipe (1101) is of a three-section structure, a straight pipe is arranged at the middle part of the Laval pipe, a closing-in pipe and a flaring pipe are respectively arranged at the two ends of the straight pipe, the closing-in pipe is an air inlet pipe, the flaring pipe is an air outlet pipe, and the fan blades (1102) are arranged in the flaring pipe.
3. The low Wen Ninghua carbon capture device for marine host tail gas of claim 1, wherein: the separation plate (13) is provided with a through hole for filtering the refrigerating fluid.
4. The low Wen Ninghua carbon capture device for marine host tail gas of claim 1, wherein: the connecting port of the dilution tank (3) communicated with the first pipeline (6) is positioned on the curved surface of the dilution tank (3), and the connecting port of the dilution tank (3) communicated with the second pipeline (7) is positioned in an area above the liquid level of the dilution liquid.
5. The low Wen Ninghua carbon capture device for marine host tail gas of claim 1, wherein: the maximum diameter of the first trapping plate (1001) and the maximum diameter of the second trapping plate (1002) are smaller than the inner diameter of the desublimation separation tank (9), a fixing rod for fixing the carbon dioxide trapping assembly (10) is arranged on the inner wall of the desublimation separation tank (9), and the diameter of an opening under the first trapping plate (1001) is larger than the diameter of an opening on the second trapping plate (1002).
6. The low Wen Ninghua carbon capture device for marine host tail gas of claim 1, wherein: the heating assembly specifically adopts an electric heating wire, a carbon dioxide barrier film is arranged at the tail gas discharge port (14), and the carbon dioxide barrier film is specifically a polyimide film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410198069.3A CN117753157B (en) | 2024-02-22 | 2024-02-22 | Low Wen Ninghua carbon capture equipment of marine host tail gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410198069.3A CN117753157B (en) | 2024-02-22 | 2024-02-22 | Low Wen Ninghua carbon capture equipment of marine host tail gas |
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| CN117753157B true CN117753157B (en) | 2024-04-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210036036U (en) * | 2019-05-03 | 2020-02-07 | 茂名华粤华源气体有限公司 | Carbon dioxide cooling and separating equipment |
| CN110756000A (en) * | 2019-10-10 | 2020-02-07 | 宁波大学 | Carbon capture and refrigeration system by ammonia crystallization method |
| CN214611561U (en) * | 2021-03-11 | 2021-11-05 | 天津市生态环境监测中心 | Carbon dioxide capture system based on coupling chemical absorption method and low-temperature desublimation method |
| CN114405048A (en) * | 2022-02-22 | 2022-04-29 | 广东广大新能源科技有限公司 | Desublimation crystallization method and system |
| CN216877921U (en) * | 2022-02-22 | 2022-07-05 | 广东广大新能源科技有限公司 | Desublimation crystallization system |
| CN115075988A (en) * | 2022-06-28 | 2022-09-20 | 江苏科技大学 | Large-scale low-power-consumption LNG power ship tail gas carbon capture system and operation method |
| CN115414784A (en) * | 2022-09-22 | 2022-12-02 | 中国船舶集团有限公司第七一一研究所 | Device for capturing carbon dioxide in ship tail gas |
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- 2024-02-22 CN CN202410198069.3A patent/CN117753157B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210036036U (en) * | 2019-05-03 | 2020-02-07 | 茂名华粤华源气体有限公司 | Carbon dioxide cooling and separating equipment |
| CN110756000A (en) * | 2019-10-10 | 2020-02-07 | 宁波大学 | Carbon capture and refrigeration system by ammonia crystallization method |
| CN214611561U (en) * | 2021-03-11 | 2021-11-05 | 天津市生态环境监测中心 | Carbon dioxide capture system based on coupling chemical absorption method and low-temperature desublimation method |
| CN114405048A (en) * | 2022-02-22 | 2022-04-29 | 广东广大新能源科技有限公司 | Desublimation crystallization method and system |
| CN216877921U (en) * | 2022-02-22 | 2022-07-05 | 广东广大新能源科技有限公司 | Desublimation crystallization system |
| CN115075988A (en) * | 2022-06-28 | 2022-09-20 | 江苏科技大学 | Large-scale low-power-consumption LNG power ship tail gas carbon capture system and operation method |
| CN115414784A (en) * | 2022-09-22 | 2022-12-02 | 中国船舶集团有限公司第七一一研究所 | Device for capturing carbon dioxide in ship tail gas |
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| CN117753157A (en) | 2024-03-26 |
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