CN-118934165-B - Marine carbon dioxide capturing comprehensive storage system and ship

CN118934165BCN 118934165 BCN118934165 BCN 118934165BCN-118934165-B

Abstract

The invention provides a marine carbon dioxide capturing and comprehensive storing system and a marine vessel, wherein the marine carbon dioxide capturing and comprehensive storing system comprises an exhaust gas carbon capturing device, a buffer tank, a high-pressure liquid carbon dioxide storing system and a medium-pressure liquid carbon dioxide storing system, the exhaust gas carbon capturing device is used for capturing gaseous carbon dioxide in combustion exhaust gas, the buffer tank is connected with the exhaust gas carbon capturing device and used for storing the captured gaseous carbon dioxide, the high-pressure liquid carbon dioxide storing system is connected with the buffer tank and used for pressurizing and liquefying the gaseous carbon dioxide to a first preset pressure value and storing the gaseous carbon dioxide, the medium-pressure liquid carbon dioxide storing system is connected with the buffer tank and used for pressurizing and liquefying the gaseous carbon dioxide to a second preset pressure value and storing the gaseous carbon dioxide, and the first preset pressure value is larger than the second preset pressure value. The invention can realize the effective collection and reutilization of the carbon dioxide generated by the combustion of the ship.

Inventors

LIU HENG
XU ANNAN
DUAN BIN
LU LINJIE
BAO JUNJIE
LI HUAN

Assignees

沪东中华造船(集团)有限公司

Dates

Publication Date: 20260505
Application Date: 20240830

Claims (8)

1. The marine carbon dioxide capturing and comprehensive storing system is characterized by being arranged in a ship body and comprising an exhaust gas carbon capturing device, a gas storage device and a gas storage device, wherein the exhaust gas carbon capturing device is used for capturing gaseous carbon dioxide in combustion tail gas; the buffer tank is connected with the waste gas carbon capture device and is used for storing captured gaseous carbon dioxide; The high-pressure liquid carbon dioxide storage system is connected with the buffer tank and is used for pressurizing and liquefying the gaseous carbon dioxide to a first preset pressure value and storing the gaseous carbon dioxide; the medium-pressure liquid carbon dioxide storage system is connected with the buffer tank and is used for pressurizing and liquefying the gaseous carbon dioxide to a second preset pressure value and storing the gaseous carbon dioxide, wherein the first preset pressure value is larger than the second preset pressure value; The high-pressure liquid carbon dioxide storage system comprises a first compressor, a first cooler and a high-pressure liquid carbon dioxide storage module, wherein the first compressor is connected to the buffer tank, the first compressor is used for pressurizing and liquefying gaseous carbon dioxide to a first preset pressure value to form high-pressure liquid carbon dioxide, the first cooler is connected to the first compressor, the first cooler is used for cooling the high-pressure liquid carbon dioxide to a first preset temperature, the high-pressure liquid carbon dioxide storage module is used for storing high-pressure liquid carbon dioxide with the first preset temperature, the medium-pressure liquid carbon dioxide storage system comprises a second compressor, a second cooler, a refrigerating unit and a liquid carbon dioxide storage tank, the second compressor is connected to the buffer tank, the refrigerating unit is used for providing a refrigerant for the second cooler, the second compressor is used for pressurizing and liquefying the gaseous carbon dioxide to a second preset pressure value to form liquid carbon dioxide, the second cooler is connected to the second cooler, the second cooler is used for cooling the second medium-pressure liquid carbon dioxide to the second preset pressure liquid carbon dioxide, and the second medium-pressure liquid carbon dioxide storage tank is used for cooling the second medium-pressure liquid carbon dioxide to the second preset pressure.
2. The marine carbon dioxide capture and integrated storage system according to claim 1, wherein the exhaust gas carbon capture device captures gaseous carbon dioxide by at least one of a chemical absorption method, a physical absorption method, a membrane separation method, an adsorption method, and a cryogenic distillation method.
3. The marine carbon dioxide capture integrated storage system of claim 1, wherein the high pressure liquid carbon dioxide storage module comprises a plurality of storage components connected in parallel and a first application pipeline, one end of the plurality of storage components is connected with a first cooler, the other end of the plurality of storage components is connected with the first application pipeline, and the first application pipeline is used for being connected with a marine high pressure carbon dioxide fire extinguishing system.
4. The marine carbon dioxide capture integrated storage system of claim 3, wherein the storage assembly comprises an injection branch pipe, a high-pressure storage tank, a detachable short pipe, a shut-off valve and a discharge branch pipe, wherein one end of the injection branch pipe is connected to the first cooler, the other end of the injection branch pipe is connected to the high-pressure storage tank through the detachable short pipe, one end of the discharge branch pipe is connected to the first application pipeline, the other end of the discharge branch pipe is connected to the high-pressure storage tank through the detachable short pipe, and the shut-off valves are respectively arranged on the injection branch pipe and the discharge branch pipe.
5. The marine carbon dioxide capture integrated storage system of claim 3, wherein the first application conduit is provided with a high pressure relief valve.
6. The marine carbon dioxide capture and integrated storage system of claim 1, further comprising an integrated measurement device disposed within the liquid carbon dioxide storage tank and configured to monitor pressure, level and temperature of the medium pressure liquid carbon dioxide within the liquid carbon dioxide storage tank, and an alarm device electrically connected to the integrated measurement device.
7. The marine carbon dioxide capture integrated storage system of claim 1, wherein the medium pressure liquid carbon dioxide storage system is connected in parallel with a second application line, a third application line, a fourth application line, and a fifth application line; the second application pipeline is used for being connected with a shore connection, the third application pipeline is used for being connected with a ship refrigerating system, the fourth application pipeline is used for being connected with a ship low-pressure carbon dioxide fire extinguishing system, and the fifth application pipeline is used for being connected with a ship inert gas system.
8. A ship comprising a hull and the integrated storage system for carbon dioxide capture for a ship according to any one of claims 1 to 7, said integrated storage system for carbon dioxide capture for a ship being provided on said hull.

Description

Marine carbon dioxide capturing comprehensive storage system and ship Technical Field The invention relates to the technical field of ship engineering equipment, in particular to a comprehensive carbon dioxide capturing and storing system for a ship and the ship. Background With the continuous improvement of the environmental protection requirements of the international shipping industry, the emission of the ship combustion exhaust gas is not only desulfurized, denitrated, but also decarbonized. Meanwhile, in order to achieve the goal of advancing the "carbon peak, carbon neutralization", the technology of capturing the carbon in the exhaust gas of ships has been developed. Carbon dioxide in exhaust gas generated by combustion of fossil fuel by the ship internal combustion engine is captured and collected by the carbon capture device, so that emission of carbon dioxide of the ship is effectively reduced. At present, the trapped carbon dioxide is usually liquefied and then stored on a ship and unloaded at a specific place or port, so that the space on the ship and the load of the ship are occupied for storing the trapped carbon dioxide, and how to reasonably utilize the trapped carbon dioxide is a current problem. Disclosure of Invention First, the technical problem to be solved The invention aims to solve the technical problem that the exhaust gas generated by the combustion of the existing ship cannot be effectively utilized after being trapped. (II) technical scheme In order to achieve the above purpose, the invention adopts the following technical scheme: The invention provides a comprehensive carbon dioxide capturing and storing system for a ship, which is arranged in a ship body and comprises an exhaust gas carbon capturing device, a buffer tank, a high-pressure liquid carbon dioxide storing system and a medium-pressure liquid carbon dioxide storing system, wherein the exhaust gas carbon capturing device is used for capturing gaseous carbon dioxide in combustion exhaust gas, the buffer tank is connected with the exhaust gas carbon capturing device and is used for storing the captured gaseous carbon dioxide, the high-pressure liquid carbon dioxide storing system is connected with the buffer tank and is used for pressurizing and liquefying the gaseous carbon dioxide to a first preset pressure value and storing the gaseous carbon dioxide, and the medium-pressure liquid carbon dioxide storing system is connected with the buffer tank and is used for pressurizing and liquefying the gaseous carbon dioxide to a second preset pressure value and storing the gaseous carbon dioxide, and the first preset pressure value is larger than the second preset pressure value. Preferably, the exhaust gas carbon capture device captures gaseous carbon dioxide by at least one of a chemical absorption method, a physical absorption method, a membrane separation method, an adsorption method and a cryogenic distillation method. Preferably, the high-pressure liquid carbon dioxide storage system comprises a first compressor, a first cooler and a high-pressure liquid carbon dioxide storage module, wherein the first compressor is connected to the buffer tank, the first compressor is used for pressurizing and liquefying the gaseous carbon dioxide to a first preset pressure value to form high-pressure liquid carbon dioxide, the first cooler is connected to the first compressor, the first cooler is used for cooling the high-pressure liquid carbon dioxide to a first preset temperature, and the high-pressure liquid carbon dioxide storage module is used for storing the high-pressure liquid carbon dioxide with the first preset temperature. Preferably, the high-pressure liquid carbon dioxide storage module comprises a plurality of storage components and a first application pipeline which are connected in parallel, one end of each storage component is connected with the first cooler, the other end of each storage component is connected with the first application pipeline, and the first application pipeline is used for being connected with the marine high-pressure carbon dioxide fire extinguishing system. Preferably, the storage assembly comprises an injection branch pipe, a high-pressure storage tank, a detachable short pipe, a shutoff valve and a discharge branch pipe, one end of the injection branch pipe is connected with the first cooler, the other end of the injection branch pipe is connected with the high-pressure storage tank through the detachable short pipe, one end of the discharge branch pipe is connected with the first application pipeline, the other end of the discharge branch pipe is connected with the high-pressure storage tank through the detachable short pipe, and the injection branch pipe and the discharge branch pipe are respectively provided with the shutoff valve. Preferably, the first application pipeline is provided with a high-pressure release valve. Preferably, the medium-pressure liquid carbon dioxide storage system com