Automobile transport ship adopting carbon capture and storage technology

Abstract

The utility model discloses an automobile transport ship adopting a carbon capture and storage technology, which comprises an engine room and an engine room shed, and a main engine and a generator set are arranged in the engine room; the device comprises an absorption unit, a desorption unit, a compression unit, a liquefaction unit and a liquid carbon dioxide storage cabin, the absorption unit, the desorption unit, the compression unit, the liquefaction unit and the liquid carbon dioxide storage cabin are connected in sequence; the absorption unit and the desorption unit are arranged in the cabin shed; the system further comprises a carbon dioxide liquefying device room, and the compression unit and the liquefying unit are arranged in the carbon dioxide liquefying device room. The liquid carbon dioxide storage cabin is arranged below the main deck; and the carbon dioxide liquefying device room is arranged below the main deck between the liquid carbon dioxide storage cabin and the cabin shed. According to the utility model, the construction cost is effectively reduced, and the optimal balance between low-carbon environmental protection and loading economy of the automobile transport ship is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, and in particular to a car transport ship adopting the carbon capture and storage technology. Background Art

[0002] In recent years, most of the new shipbuilding projects of car carriers at home and abroad have adopted liquefied natural gas (LNG) fuel to meet the requirements of international carbon emission reduction conventions such as the Energy Efficiency Design Index (EEDI) and the Operational Carbon Intensity Rating (CII Rating). However, with the mandatory entry into force of international conventions on carbon emission reduction throughout the life cycle and relevant EU laws, car carriers must rely on emerging technologies such as carbon neutral or zero-carbon alternative fuels, wind propulsion, and carbon capture to achieve the long-term decarbonization goals of 2035-2050.

[0003] Currently, alternative fuel technologies such as methanol and ammonia are popular in the international maritime community. However, the industry generally expects that the fuel prices of green methanol and green ammonia will be high in the future, and the limited planned production capacity and supply are far from meeting the rapidly growing market demand for such fuels in the shipping industry. In addition, due to the low energy density of methanol and ammonia, a large cargo hold volume will be sacrificed on board to meet the layout requirements of methanol or ammonia fuel tanks.

[0004] Carbon capture and storage (CCS) technology is currently mainly used in onshore oil and gas production, fertilizer, power generation and other industries, with high technical maturity and strong technical feasibility. According to general predictions from the domestic and foreign industries, the application of this technology to ships has broad development prospects and will become one of the reliable technical paths for ocean-going commercial ships to achieve medium- and long-term decarbonization goals.

[0005] Several prior art situations are listed below.

[0006] The patent with publication number CN214764428U and titled "Ship exhaust dust removal, decarbonization, absorption and analysis device and ship" discloses a ship exhaust dust removal, desulfurization, decarbonization, absorption and analysis device and ship, and its system includes a comprehensive absorption tower, a carbon dioxide analyzer and a pump. The given ship layout is that the comprehensive absorption tower is set on the rear deck behind the chimney. The patent does not mention the carbon dioxide compression and liquefaction module and the storage module, and cannot realize the storage of captured carbon dioxide during navigation, and does not provide a feasible solution for the overall system layout, power load and thermal load of a given ship type.

[0007] The patent with publication number CN216726603U and name “A liquid cargo ship with the function of capturing and storing carbon dioxide” discloses a liquid cargo ship with the function of capturing and storing carbon dioxide, and provides a layout plan of the carbon dioxide capture device, reliquefaction device and storage device.

[0008] The patent with publication number CN216092974U and titled "System and ship for desorbing CO2 from flue gas" discloses a system and ship for desorbing CO2 from flue gas, wherein the system for desorbing CO2 from flue gas includes an absorption device, a desorption device, a first branch and a second branch. Although the patent mentions a ship, it does not provide a design scheme for a ship with a CO2 absorption device, and the system mentioned does not include a CO2 compression liquefaction and storage module.

[0009] None of the above-mentioned published patents mentions the CO2 compression and liquefaction system and storage system, which are crucial to the realization of CO2 emission reduction. At the same time, none of the above-mentioned published patents mentions the implementation plan of the CO2 capture system on the car carrier, the matching of electrical power and thermal power, the layout of the equipment, etc. Utility Model Content

[0010] The technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art and provide a car transport ship adopting carbon capture and storage technology.

[0011] The utility model solves the above technical problems through the following technical solutions:

[0012] A car transport ship adopting carbon capture and storage technology comprises a cabin arranged below the main deck and a cabin shed arranged on the main deck, wherein a main engine and a generator set are arranged in the cabin; the car transport ship adopting carbon capture and storage technology comprises an absorption unit capable of absorbing carbon dioxide gas in tail gas of the main engine and the generator set, a desorption unit capable of desorbing carbon dioxide from a solution formed after carbon dioxide is absorbed in the absorption unit, a compression unit capable of pressurizing and compressing gaseous carbon dioxide desorbed by the desorption unit, a liquefaction unit capable of liquefying gaseous carbon dioxide pressurized by the compression unit, and a liquid carbon dioxide storage tank for storing liquid carbon dioxide output by the liquefaction unit; the absorption unit, the desorption unit, the compression unit, the liquefaction unit and the liquid carbon dioxide storage tank are connected in sequence; the absorption unit and the desorption unit are both arranged in the cabin shed; the car transport ship adopting carbon capture and storage technology also comprises a carbon dioxide liquefaction device room, the compression unit and the liquefaction unit are arranged in the carbon dioxide liquefaction device room; the liquid carbon dioxide storage tank is arranged below the main deck; the carbon dioxide liquefaction device room is arranged below the main deck between the liquid carbon dioxide storage tank and the cabin shed.

[0013] Furthermore, the liquid carbon dioxide storage tank is connected to a storage tank connection location for connecting the liquid carbon dioxide storage tank with the outside; the liquefaction unit is connected to the liquid carbon dioxide storage tank through the storage tank connection location.

[0014] Furthermore, the storage tank connection location is arranged on the top of the liquid carbon dioxide storage tank, and the storage tank connection location is located below the main deck.

[0015] Furthermore, a liquid carbon dioxide unloading station is provided on the main deck for unloading and transferring the liquid carbon dioxide in the liquid carbon dioxide storage tank to an off-board receiving facility; the liquid carbon dioxide unloading station is connected to the liquid carbon dioxide storage tank through a storage tank connection location.

[0016] Furthermore, the engine room shed is arranged on the port side, the carbon dioxide liquefaction device room is arranged between the liquid carbon dioxide storage tank and the port side, and the liquid carbon dioxide unloading station is arranged on the starboard side.

[0017] Furthermore, the liquefaction unit and the storage tank connection location, the liquid carbon dioxide unloading station and the storage tank connection location, and the storage tank connection location and the liquid carbon dioxide storage tank are all connected by a transmission pipeline coated with insulating material.

[0018] Furthermore, the liquid carbon dioxide storage tank is arranged above the double bottom of the cargo hold; the liquid carbon dioxide storage tank is a C-type tank.

[0019] Furthermore, a ventilation mast is provided on the top deck, and a ventilation pipeline on the ventilation mast is connected to the liquid carbon dioxide storage tank.

[0020] Furthermore, a steam boiler capable of providing steam to the desorption unit is provided in the cabin shed; the steam boiler is connected to the desorption unit.

[0021] Furthermore, the compression unit and the liquefaction unit are both connected to the generator set via cables.

[0022] The beneficial effects of the present invention are as follows: the present invention fully considers the layout characteristics of automobile transport ships, and through the integrated and coordinated planning of various subsystems in the carbon capture and storage system, optimizes the overall spatial layout of the carbon capture, desorption, liquefaction and storage system, minimizes the length of the system's liquid carbon dioxide pipeline, effectively reduces construction costs, and minimizes the negative impact on the cargo hold vehicle loading space and loading and unloading efficiency, thereby achieving the best balance between the low-carbon environmental protection and loading economy of automobile transport ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a side view of a preferred embodiment of the utility model.

[0024] Figure 2 This is a cross-sectional view of a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0025] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0026] like Figure 1 and Figure 2As shown, a car carrier using carbon capture and storage technology includes a cabin 20 arranged below a main deck 14 and a cabin shed 24 arranged on the main deck 14 , and a main engine 21 and a generator set 22 are arranged in the cabin 20 .

[0027] The automobile carrier using carbon capture and storage technology includes an absorption unit 25 capable of absorbing carbon dioxide gas in the exhaust gas of the main engine and the generator set, a desorption unit 26 capable of desorbing carbon dioxide from a solution formed after the carbon dioxide is absorbed in the absorption unit, a compression unit 27 capable of pressurizing and compressing the gaseous carbon dioxide desorbed by the desorption unit, a liquefaction unit 28 capable of liquefying the gaseous carbon dioxide pressurized by the compression unit, and a liquid carbon dioxide storage tank 10 for storing the liquid carbon dioxide output by the liquefaction unit.

[0028] The absorption unit 25, the desorption unit 26, the compression unit 27, the liquefaction unit 28 and the liquid carbon dioxide storage tank 10 are connected in sequence.

[0029] The absorption unit 25 and the desorption unit 26, the desorption unit 26 and the compression unit 27, and the compression unit 27 and the liquefaction unit 28 are connected through a gas transmission pipeline.

[0030] The absorption unit 25 and the desorption unit 26 are both arranged in the cabin shed 24 .

[0031] The car carrier using the carbon capture and storage technology further includes a carbon dioxide liquefaction device room 29 , in which the compression unit 27 and the liquefaction unit 28 are arranged.

[0032] The liquid carbon dioxide storage tank 10 is provided below the main deck 14. The carbon dioxide liquefaction equipment room 29 is provided below the main deck between the liquid carbon dioxide storage tank 10 and the engine room shed 24.

[0033] The liquid carbon dioxide storage tank 10 is arranged above the double bottom 16 of the cargo hold; the liquid carbon dioxide storage tank 10 is arranged in the roll-on / roll-off cargo space 17. The liquid carbon dioxide storage tank 10 is a C-type tank.

[0034] The liquid carbon dioxide storage tank 10 is connected to a storage tank connection location 11 for connecting the liquid carbon dioxide storage tank with the outside; the liquefaction unit 28 is connected to the liquid carbon dioxide storage tank 10 through the storage tank connection location 11 .

[0035] The storage tank connection location 11 is disposed on the top of the liquid carbon dioxide storage tank 10 , and the storage tank connection location 11 is located below the main deck 14 .

[0036] A liquid carbon dioxide unloading station 13 for unloading and transferring the liquid carbon dioxide in the liquid carbon dioxide storage tank to an off-board receiving facility is provided on the main deck 14 ; the liquid carbon dioxide unloading station 13 is connected to the liquid carbon dioxide storage tank 10 through a storage tank connecting place 11 .

[0037] like Figure 2 As shown, the engine room shed 24 is located on the port side and close to the front of the engine room; the carbon dioxide liquefaction device room 29 is located between the liquid carbon dioxide storage tank 10 and the port side, and the liquid carbon dioxide unloading station 13 is located on the starboard side.

[0038] In other embodiments, the cabin shed is located on the starboard side and close to the front of the cabin; the carbon dioxide liquefaction device room is located between the liquid carbon dioxide storage tank and the starboard side, and the liquid carbon dioxide unloading station is located on the port side.

[0039] The liquefaction unit 28 and the storage tank connection location 11, the liquid carbon dioxide unloading station 13 and the storage tank connection location 11, and the storage tank connection location 11 and the liquid carbon dioxide storage tank 10 are all connected by a transmission pipeline coated with insulating material. Preferably, the transmission pipeline coated with insulating material is a stainless steel pipe coated with insulating material.

[0040] like Figure 1 As shown, a vent mast 12 is provided on the top deck 15, and a vent pipe on the vent mast 12 is connected to the liquid carbon dioxide storage tank 10. Carbon dioxide gas exceeding the rated pressure in the liquid carbon dioxide storage tank can be discharged to the atmosphere through the vent pipe on the vent mast to maintain the safety of the liquid carbon dioxide storage tank.

[0041] A steam boiler 23 capable of providing steam for the desorption unit is provided in the cabin shed 24 ; the steam boiler 23 is connected to the desorption unit 26 .

[0042] The compression unit 27 and the liquefaction unit 28 are both connected to the generator set 22 via cables.

[0043] It should be noted that in order to clearly show the various components, Figure 1 and Figure 2 The connecting pipes between the various components are not shown. Figure 2 The perspective of the cross-sectional view is from the bow to the stern, and the top deck and components on the top deck are omitted in the figure.

[0044] In this embodiment, the carbon dioxide absorption principle adopted by the absorption unit is chemical absorption. The types of chemical absorption liquid include but are not limited to: monoethanolamine, diethanolamine, methyldiethanolamine and isobutanolamine.

[0045] The large amount of steam consumed by the desorption unit is provided by the steam boiler in the engine room shed; all the electricity consumed by the supporting pump group, compression unit and liquefaction unit is provided by the generator set in the engine room.

[0046] A storage tank connection place 11 is arranged on the top of the liquid carbon dioxide storage tank 10 to minimize the potential threat to personnel caused by carbon dioxide leakage. The carbon dioxide liquefaction device room 29 is arranged between the liquid carbon dioxide storage tank and the cabin shed, and as close to the cabin shed as possible, so as to shorten the liquid carbon dioxide delivery pipeline.

[0047] The liquid carbon dioxide unloading station 13 is arranged on the side opposite to the location of the engine room shed. The longitudinal position of the liquid carbon dioxide unloading station is close to the tail of the liquid carbon dioxide storage tank 10. The liquid carbon dioxide in the liquid carbon dioxide storage tank can be unloaded and transported to an off-board receiving facility, for example, the liquid carbon dioxide can be unloaded and transported to a shore receiving facility, or the liquid carbon dioxide can be unloaded and transported to a receiving facility on other ships.

[0048] In the utility model, the capture, desorption, liquefaction and storage of carbon dioxide are formed through the absorption unit, desorption unit, compression unit, liquefaction unit and liquid carbon dioxide storage tank, respectively forming a carbon dioxide capture system, a carbon dioxide desorption system, a carbon dioxide liquefaction system and a liquid carbon dioxide storage system. For the transmission pipelines connecting the absorption unit, desorption unit, compression unit, liquefaction unit and liquid carbon dioxide storage tank, the pipeline length can be minimized.

[0049] The utility model has the following advantages: through the integrated and coordinated planning of various subsystems in the carbon capture and storage system, the overall spatial layout of the carbon capture, desorption, liquefaction and storage system is optimized, the length of the system's liquid carbon dioxide pipeline is minimized, the construction cost is effectively reduced, and the negative impact on the cargo hold vehicle loading space and loading and unloading efficiency is minimized as much as possible, achieving the best balance between the low-carbon environmental protection and loading economy of the car transport ship.

[0050] The utility model is a design scheme for a car transport ship using carbon capture and storage technology, which has relatively low operating costs, safe and reliable technical solutions, and relatively moderate initial investment costs.

[0051] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A car carrier using carbon capture and storage technology, comprising a cabin located below the main deck and a cabin shed located on the main deck, wherein a main engine and a generator set are arranged in the cabin; characterized in that: It includes an absorption unit capable of absorbing carbon dioxide gas in tail gas of the main engine and the generator set, a desorption unit capable of desorbing carbon dioxide from a solution formed after carbon dioxide is absorbed in the absorption unit, a compression unit capable of pressurizing and compressing the gaseous carbon dioxide desorbed by the desorption unit, a liquefaction unit capable of liquefying the gaseous carbon dioxide pressurized by the compression unit, and a liquid carbon dioxide storage tank for storing the liquid carbon dioxide output by the liquefaction unit; The absorption unit, desorption unit, compression unit, liquefaction unit and liquid carbon dioxide storage tank are connected in sequence; the absorption unit and the desorption unit are both arranged in the engine room shed; the automobile transport ship adopting carbon capture and storage technology also includes a carbon dioxide liquefaction device room, and the compression unit and the liquefaction unit are arranged in the carbon dioxide liquefaction device room; the liquid carbon dioxide storage tank is arranged under the main deck; the carbon dioxide liquefaction device room is arranged under the main deck between the liquid carbon dioxide storage tank and the engine room shed.

2. The automobile carrier using carbon capture and storage technology according to claim 1, characterized in that: The liquid carbon dioxide storage tank is connected to a storage tank connection location for connecting the liquid carbon dioxide storage tank with the outside; The liquefaction unit is connected to the liquid carbon dioxide storage tank through the storage tank connection location.

3. The automobile carrier using carbon capture and storage technology according to claim 2, characterized in that: The storage tank connection location is arranged on the top of the liquid carbon dioxide storage tank, and the storage tank connection location is located below the main deck.

4. The automobile carrier using carbon capture and storage technology as claimed in claim 2, characterized in that: A liquid carbon dioxide unloading station is provided on the main deck for unloading and transferring the liquid carbon dioxide in the liquid carbon dioxide storage tank to an off-board receiving facility; the liquid carbon dioxide unloading station is connected to the liquid carbon dioxide storage tank through a storage tank connecting location.

5. The automobile carrier using carbon capture and storage technology as claimed in claim 4, characterized in that: The engine room shed is located on the port side, the CO2 liquefaction device room is located between the liquid CO2 storage tank and the port side, and the liquid CO2 unloading station is located on the starboard side.

6. The automobile carrier using carbon capture and storage technology as claimed in claim 4, characterized in that: The liquefaction unit and the storage tank connection location, the liquid carbon dioxide unloading station and the storage tank connection location, and the storage tank connection location and the liquid carbon dioxide storage tank are all connected by transmission pipelines coated with insulating materials.

7. The automobile carrier using carbon capture and storage technology according to claim 1, characterized in that: The liquid carbon dioxide storage tank is located above the double bottom of the cargo hold; the liquid carbon dioxide storage tank is a C-type tank.

8. The car carrier using carbon capture and storage technology as claimed in claim 1, characterized in that: A ventilation mast is provided on the top deck, and a ventilation pipeline on the ventilation mast is connected to the liquid carbon dioxide storage tank.

9. The automobile carrier using carbon capture and storage technology according to claim 1, characterized in that: A steam boiler capable of providing steam to the desorption unit is arranged in the engine room shed; the steam boiler is connected to the desorption unit.

10. The car carrier using carbon capture and storage technology according to claim 1, characterized in that: The compression unit and the liquefaction unit are connected to the generator set via cables.

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