CN-115773456-B - Dual-purpose storage tank system for fuel and tail gas

CN115773456BCN 115773456 BCN115773456 BCN 115773456BCN-115773456-B

Abstract

The invention relates to a fuel and tail gas dual-purpose storage tank system which comprises a tank body and a baffle plate, wherein the tank body is provided with a containing cavity, the baffle plate is arranged in the containing cavity and used for separating the containing cavity into a fuel cavity and a tail gas cavity, the fuel cavity is used for conveying fuel contained in the containing cavity to a power system, the tail gas cavity is used for collecting tail gas discharged by the power system, the baffle plate moves along the arrangement direction of the fuel cavity and the tail gas cavity, so that the volumes of the fuel cavity and the tail gas cavity can be adjusted, and the baffle plate can move under the driving of pressure difference in the fuel cavity and the tail gas cavity. According to the scheme, the partition plate can correspondingly move under the driving of the pressure difference in the fuel cavity and the tail gas cavity so as to adjust the volumes of the fuel cavity and the tail gas cavity in real time, so that the volumes of the fuel cavity and the tail gas cavity can be effectively utilized, the storage requirements of fuel and tail gas can be met, the space occupied by the storage tank system can be saved while carbon-free emission is realized, and the space utilization rate of a ship can be improved.

Inventors

LI TIANHUI
LI HONGXIANG
LI XINDIAN
WANG YING
LU YOU
WANG AO

Assignees

武汉氢能与燃料电池产业技术研究院有限公司
武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所）

Dates

Publication Date: 20260512
Application Date: 20221115

Claims (9)

1. A fuel and tail gas dual-purpose storage tank system, comprising: A tank body with a containing cavity and The separator is arranged in the accommodating cavity and used for separating the accommodating cavity into a fuel cavity and a tail gas cavity, the fuel cavity is used for conveying fuel contained in the fuel cavity to the power system, the tail gas cavity is used for collecting tail gas discharged by the power system, and the separator moves along the arrangement direction of the fuel cavity and the tail gas cavity so that the volumes of the fuel cavity and the tail gas cavity can be adjusted, and the separator can move under the driving of pressure difference in the fuel cavity and the tail gas cavity; The fuel and tail gas dual-purpose storage tank system further comprises: Two liquid level sensors, which are arranged in one-to-one correspondence with the fuel cavity and the tail gas cavity and are respectively used for monitoring the liquid levels in the fuel cavity and the tail gas cavity, and The pressure boosting vaporization loop is communicated with the tail air cavity and is provided with a stop valve and a pressure boosting vaporization unit, the stop valve is used for being conducted when the liquid level difference monitored by the two liquid level sensors reaches a preset value, and the pressure boosting vaporization unit is used for increasing the pressure in the tail air cavity when the stop valve is conducted.
2. The dual fuel and exhaust storage tank system of claim 1, wherein the fuel chamber is configured to hold liquefied fuel; The tail gas cavity is communicated with a liquefaction pipeline, and the liquefaction pipeline is provided with a cooling unit and a pressurizing unit which are used for being in butt joint with a tail gas exhaust pipeline of the power system, so that tail gas exhausted by the power system enters the tail gas cavity after being liquefied.
3. The dual-purpose fuel and exhaust storage tank system of claim 2, wherein the separator has a vacuum chamber and/or an outer surface of the separator is provided with a heat insulating material.
4. The fuel and exhaust gas dual-purpose storage tank system according to claim 3, wherein the partition board comprises a vacuum layer and a heat insulation layer coated on the whole body of the vacuum layer, the vacuum layer is made of metal, and the heat insulation layer is made of heat insulation material; Wherein the vacuum cavity is formed in the vacuum layer.
5. The dual-purpose fuel and exhaust storage tank system according to claim 2, further comprising two temperature transmitters, wherein the two temperature transmitters are arranged in one-to-one correspondence with the fuel chamber and the exhaust chamber, and are respectively used for monitoring temperatures in the fuel chamber and the exhaust chamber.
6. The dual-purpose fuel and exhaust storage tank system according to claim 2, wherein an insulation layer is provided on the outer periphery of the tank body.
7. The dual-purpose fuel and exhaust storage tank system of any one of claims 1 to 6, further comprising two pressure transmitters disposed in one-to-one correspondence with the fuel chamber and the exhaust chamber for monitoring the pressure in the fuel chamber and the exhaust chamber, respectively.
8. The dual-purpose fuel and exhaust storage tank system according to claim 1, wherein two gas rings are arranged at intervals along the moving direction of the periphery of the partition board, and an oil ring is further arranged between the two gas rings, and the mutual error angle between the endplay of each gas ring and the endplay of the oil ring is alpha, so that the alpha is more than or equal to 120 degrees and less than or equal to 180 degrees.
9. The dual-purpose fuel and exhaust storage tank system of claim 8, wherein a lubricating film is coated between the periphery of the partition plate and the inner wall of the receiving chamber.

Description

Dual-purpose storage tank system for fuel and tail gas Technical Field The invention relates to the technical field of storage tanks for ships, in particular to a fuel and tail gas dual-purpose storage tank system. Background The field of ships provides a series of energy-saving and emission-reducing measures to promote the replacement of traditional high-carbon fuel combustion (such as diesel oil) by low-carbon clean fuel (such as LNG) so as to solve the problems of high carbon emission, serious pollution and the like of the ships from the source. The liquefied low-temperature fuel is heated and gasified and then enters a power system to be used as fuel, the power system is provided with energy through combustion or direct electrochemical reaction, and finally, the flue gas mainly containing carbon dioxide is generated. The flue gas is directly discharged to the atmosphere after being subjected to cooling, desulfurization and other treatments. The common emission reduction measures at present comprise trapping and adsorption, but the adsorption equipment is large in size, and for the ship field with limited space, the emission reduction by using the scheme is difficult. The conventional emission-free tail gas treatment device, such as the device and method for using and storing the waste gas of the underwater vehicle disclosed in patent CN 109838684A, comprises a liquid oxygen storage tank, a carbon dioxide storage tank, a hot air engine and the like, and the tail gas generated by the hot air engine is liquefied and stored in the carbon dioxide storage tank by using fuel gas and liquid oxygen as double cold sources, so that the underwater vehicle does not leave tracks and chemical heat signals. Because space of the underwater equipment is as valuable as space of the ship, the mode of additionally providing the carbon dioxide storage tank occupies a large amount of effective space. How to design a non-emission storage tank structure capable of utilizing the existing space to store tail gas becomes a technical problem to be solved. Disclosure of Invention In view of the above, it is necessary to provide a fuel and tail gas dual-purpose storage tank system for solving the technical problem that the emission-free tail gas treatment device in the prior art needs to be provided with a different tail gas storage tank, which results in larger occupied effective space. The invention provides a fuel and tail gas dual-purpose storage tank system, which comprises: A tank body with a containing cavity and The baffle is arranged in the accommodating cavity, is used for separating the accommodating cavity into a fuel cavity and a tail gas cavity, the fuel cavity is used for conveying fuel contained in the fuel cavity to the power system, the tail gas cavity is used for collecting tail gas exhausted by the power system, and the baffle moves along the arrangement direction of the fuel cavity and the tail gas cavity, so that the volumes of the fuel cavity and the tail gas cavity are adjustable, and the baffle can move under the driving of pressure difference in the fuel cavity and the tail gas cavity. Optionally, the fuel cavity is used for containing liquefied fuel; The tail gas cavity is communicated with a liquefaction pipeline, and the liquefaction pipeline is provided with a cooling unit and a pressurizing unit which are used for being in butt joint with a tail gas exhaust pipeline of the power system, so that tail gas exhausted by the power system enters the tail gas cavity after being liquefied. Optionally, the partition board is provided with a vacuum cavity, and/or a heat insulation material is arranged on the outer surface of the partition board. Optionally, the partition plate comprises a vacuum layer and a heat insulation layer coated on the whole body of the vacuum layer, wherein the vacuum layer is made of metal, and the heat insulation layer is made of heat insulation material; Wherein the vacuum cavity is formed in the vacuum layer. Optionally, the fuel and tail gas dual-purpose storage tank system further comprises: Two liquid level sensors, which are arranged in one-to-one correspondence with the fuel cavity and the tail gas cavity and are respectively used for monitoring the liquid levels in the fuel cavity and the tail gas cavity, and The pressure boosting vaporization loop is communicated with the tail air cavity and is provided with a stop valve and a pressure boosting vaporization unit, the stop valve is used for being conducted when the liquid level difference monitored by the two liquid level sensors reaches a preset value, and the pressure boosting vaporization unit is used for increasing the pressure in the tail air cavity when the stop valve is conducted. Optionally, the fuel and tail gas dual-purpose storage tank system further comprises two temperature transmitters, wherein the two temperature transmitters are arranged in one-to-one correspondence with the fuel cavity and the tail gas cavity an