CN117211998A - Ammonia fuel supply system and use method thereof - Google Patents
Ammonia fuel supply system and use method thereof Download PDFInfo
- Publication number
- CN117211998A CN117211998A CN202311178914.2A CN202311178914A CN117211998A CN 117211998 A CN117211998 A CN 117211998A CN 202311178914 A CN202311178914 A CN 202311178914A CN 117211998 A CN117211998 A CN 117211998A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- pipeline
- tank
- liquid
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 269
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 83
- 239000000446 fuel Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229940090046 jet injector Drugs 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 53
- 239000007789 gas Substances 0.000 claims description 28
- 239000012071 phase Substances 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000007792 gaseous phase Substances 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Abstract
The invention relates to an ammonia fuel supply system and a use method thereof, wherein the system comprises a storage tank, a delivery pump, a buffer tank, a booster pump, a jet injector, a heat exchanger and ammonia fuel equipment, wherein the equipment are sequentially connected through pipelines, and the pipelines are provided with valves of different types; liquid ammonia in the storage tank is conveyed to the buffer tank by the conveying pump; two parallel pipelines, namely a first pipeline and a second pipeline, are arranged between the conveying pump and the buffer tank, and are selected according to the pressure of the storage tank; and when the liquid ammonia in the buffer tank is excessive, the excessive liquid ammonia returns to the storage tank through a tank returning pipeline at the bottom of the buffer tank. The ammonia fuel supply system and the use method thereof have the advantages that the structure is simple, the operation is reliable, excessive volatile ammonia in the storage tank is pumped out, cooled and liquefied by utilizing the suction function of the jet injector, the pressure of the storage tank is effectively controlled while liquid ammonia fuel is supplied, and the safety is improved.
Description
Technical Field
The invention relates to the technical field of ship engineering equipment, in particular to an ammonia fuel supply system and a use method thereof.
Background
Against the increasingly serious environmental problems, the international and domestic convention has increasingly strict requirements on the emission of pollutants in the shipping industry, and the development of clean energy for ships is an important way for seeking green low-carbon development of the shipping industry. In recent years, the use of clean energy sources such as liquefied natural gas, methanol, hydrogen and ammonia on board ships has been increasing, and in the long term, hydrogen, ammonia and other "zero carbon" fuels may become the best choice for reducing emissions.
Ammonia is an inorganic compound, consisting of hydrogen and nitrogen, which does not produce carbon dioxide and sulfur dioxide and other carbon-containing air pollutants when burned. Ammonia is easily liquefied, and the gaseous ammonia is cooled to-33 ℃ under one atmosphere pressure or pressurized to 0.7-0.8MPa under normal temperature, so that the ammonia can be liquefied into colorless liquid. The volume of liquid ammonia is approximately 1/922 of the volume of an equivalent amount of gaseous ammonia. In order to save fuel storage space and effectively increase the range and self-holding power of the ship, ammonia fuel is stored in a liquid state on the ship. At present, the ammonia dual-fuel machine which can be expected takes liquid ammonia as fuel, and ammonia evaporated in the storage process cannot be directly used as fuel.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides an ammonia fuel supply system and a use method thereof, wherein the system can effectively treat and control evaporation of liquid ammonia while supplying ammonia fuel, prevent cabin pressure from rising, avoid the risk of ammonia emission and ensure the safety of personnel on a ship.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
the utility model provides an ammonia fuel feed system, including the storage tank, the delivery pump, the buffer tank, the booster pump, jet ejector, heat exchanger and ammonia fuel equipment, connect gradually through the pipeline between the equipment, the pipeline includes liquid ammonia delivery line, first pipeline, the second pipeline, volatilize the gas line, ammonia fuel feed line and back cabin pipeline, volatilize the one end of gas line and the top gaseous phase space intercommunication in the storage tank, volatilize the other end of gas line and jet ejector's suction inlet connection, the outlet and the liquid ammonia delivery line of delivery pump are connected, liquid ammonia delivery line is connected with the buffer tank respectively through parallelly connected first pipeline and second pipeline, be equipped with liquid ammonia in the buffer tank, liquid ammonia is carried to ammonia fuel equipment through ammonia fuel feed line after the booster pump pressure boost, the buffer tank bottom is connected with back cabin pipeline, back cabin pipeline and storage tank intercommunication.
As the preferable technical scheme, the storage tank is any one of A type, B type, C type and film type enclosure systems.
As a preferred technical solution, the transfer pump is a immersed pump or a deep well pump, and the transfer pump is installed inside the storage tank.
As a preferred solution, the transfer pump is a horizontal or vertical pump, which is mounted outside the tank.
As the preferable technical scheme, first pipeline and second pipeline parallel arrangement are equipped with first pressure control valve on the first pipeline, be equipped with second pressure control valve on the second pipeline in proper order, jet ejector and first heat exchanger, one-way check valve, the top of storage tank is equipped with pressure sensor, first pressure control valve and second pressure control valve pass through signal connection with pressure sensor, the on-off state of first pressure control valve and second pressure control valve is controlled according to the pressure in the gas phase space in the storage tank, jet ejector is equipped with drainage mouth, suction port and discharge port, the drainage mouth is connected with second pressure control valve, the suction port is connected with volatilize the pipeline, the discharge port is connected with first heat exchanger, first heat exchanger carries out cooling, liquefaction to the liquid ammonia from jet ejector and ammonia volatilize the mixed solution of gas, one-way check valve installs on the pipeline between first heat exchanger and buffer tank.
As the preferred technical scheme, the buffer tank receives liquid ammonia from a first pipeline or a second pipeline, a liquid level sensor is arranged on the buffer tank, the buffer tank is connected with an ammonia fuel supply pipeline and a liquid ammonia returning cabin pipeline, a booster pump and a second heat exchanger are arranged on the ammonia fuel supply pipeline, the booster pump and the second heat exchanger are used for supplying ammonia fuel equipment after boosting and cooling liquid ammonia to normal temperature, one end of the liquid ammonia returning cabin pipeline is connected with the bottom of the buffer tank, and the other end of the liquid ammonia returning cabin pipeline extends to a position close to the bottom in the storage tank.
As the preferable technical scheme, be equipped with liquid level control valve and choke valve on the liquid ammonia back cabin pipeline, liquid level control valve is by installing the liquid level sensor control switch on the buffer tank body, and the choke valve throttles, decompresses the liquid ammonia of back cabin.
As a preferred embodiment, a method for using an ammonia fuel supply system includes the steps of:
the method comprises the steps that firstly, a delivery pump outputs liquid ammonia in a storage tank through a liquid ammonia delivery pipeline, the pressure of a gas phase space in the storage tank is monitored through a pressure sensor, and one of a first pipeline and a second pipeline which are parallel is selected according to the pressure in the storage tank;
when the pressure in the storage tank is lower than a set value, the first pressure control valve is opened, the second pressure control valve is closed, and the liquid ammonia is conveyed to the buffer tank through the first pipeline;
when the pressure in the storage tank is higher than a set value, the first pressure control valve is closed, the second pressure control valve is opened, liquid ammonia from the delivery pump enters the jet ejector through the drainage port, the pressure of the liquid ammonia is reduced through the jet nozzle, the flow speed is increased, a low-pressure area is formed in the jet ejector, the low-pressure area is connected with the volatilizing air pipeline through the suction port, excessive volatilizing ammonia in the storage tank enters the jet ejector through the volatilizing air pipeline under the action of pressure difference, and the excessive volatilizing ammonia is mixed with the liquid ammonia in the jet ejector to form gas-liquid mixed liquid, and the mixed liquid discharged by the jet ejector enters the buffer tank after being cooled and liquefied through the first heat exchanger;
step four, after the liquid ammonia in the buffer tank is pressurized and cooled by the booster pump and the second heat exchanger, the pressure and the temperature meet the requirements of ammonia fuel equipment, and the liquid ammonia is used as fuel to be conveyed to the ammonia fuel equipment;
when the amount of liquid ammonia from the storage tank exceeds the requirement of ammonia fuel equipment, the liquid level of the liquid ammonia in the buffer tank rises, when the liquid level exceeds a high-level set value, a liquid level sensor arranged on the buffer tank sends out a signal, a liquid level control valve is controlled to be opened, the buffer tank is communicated with the storage tank through a liquid ammonia returning pipeline, the temperature of the returning liquid ammonia is reduced while throttling and depressurizing through a throttle valve, when the returning liquid ammonia is conveyed to the bottom of the storage tank, the returning liquid ammonia is subjected to the action of liquid level static pressure in the storage tank, and under the dual actions of temperature reduction and static pressure, the returning liquid ammonia is in a supercooled state, namely part of cold energy enters the storage tank along with the returning liquid ammonia;
and step six, when the liquid level in the buffer tank is reduced to a low-level set value, a liquid level sensor on the storage tank controls a liquid level control valve to be closed, liquid ammonia returning is stopped, and step 4 of delivering fuel to the ammonia fuel equipment is not affected in the operation process of step 5 and step 6.
Compared with the prior art, the invention has the beneficial effects that:
(1) The ammonia fuel supply system has a simple structure and clear control logic, and can flexibly select a liquid ammonia fuel supply flow according to the pressure of the storage tank.
(2) According to the ammonia fuel supply system, the jet injector is introduced, no moving parts exist, and high reliability of system operation is ensured.
(3) According to the ammonia fuel supply system, the transported ammonia fuel is used as drainage liquid of the jet injector, the volatile gas in the storage tank is extracted by utilizing the suction characteristic of the jet injector, extra power consumption is not needed, and the efficiency and the economy of the system are effectively improved.
(4) According to the ammonia fuel supply system, the boiling point of ammonia is increased along with the pressure rise, and the volatile gas in the storage tank is pumped, mixed and boosted through the jet injector, so that the subsequent normal-temperature liquefaction is realized.
(5) According to the ammonia fuel supply system, for the liquid ammonia in the back tank, the comprehensive throttle valve is used for reducing pressure and cooling, and the liquid level static pressure in the storage tank is used for enabling the liquid ammonia in the back tank to reach a supercooled state, so that volatilization of the liquid ammonia in the storage tank can be effectively reduced, and the working efficiency of the whole system is further improved.
Drawings
FIG. 1 is a schematic diagram of an ammonia fuel delivery system of the present invention;
in the figure, 1. A storage tank; 2. a transfer pump; 3. a jet ejector; 4. a first heat exchanger; 5. a buffer tank; 6. a booster pump; 7. a second heat exchanger; 8. a first pressure control valve; 9. a second pressure control valve; 10. a liquid level control valve; 11. a throttle valve; 12. a one-way check valve; 13. a pressure sensor; 14. a liquid level sensor; 15. a liquid ammonia delivery line; 16. a first pipeline; 17. a second pipeline; 18. a volatile gas line; 19. an ammonia fuel supply line; 20. a cabin returning pipeline; 21. an ammonia fuel plant.
Detailed Description
The technical scheme of the invention is further described below with reference to the specific embodiments:
as shown in fig. 1, an ammonia fuel supply system comprises a storage tank 1, a delivery pump 2, a buffer tank 5, a booster pump 6, a jet injector 3, a heat exchanger and ammonia fuel equipment, wherein the equipment are sequentially connected through pipelines, specifically, a volatile gas pipeline 18 is arranged at the top of the storage tank 1, one end of the volatile gas pipeline 18 is communicated with a top gas phase space in the storage tank 1, the other end of the volatile gas pipeline 18 is connected with a suction port of the jet injector 3, an outlet of the delivery pump 2 is connected with a liquid ammonia delivery pipeline 15, the liquid ammonia delivery pipeline 15 is respectively connected with the buffer tank 5 through a first pipeline 16 and a second pipeline 17 which are connected in parallel, liquid ammonia is arranged in the buffer tank 5, and is delivered to an ammonia fuel equipment 21 through an ammonia fuel supply pipeline 19 after being pressurized by the booster pump 6, a cabin returning pipeline 20 is connected to the bottom of the buffer tank 5, and the cabin returning pipeline 20 is communicated with the storage tank 1.
Specifically, the tank 1 may be any one of a type a, B, C and thin film type containment systems defined by IMO (international maritime organization), and the tank 1 is provided inside a hull structure or on a deck for storing liquid ammonia. The top of the storage tank 1 is provided with a pressure sensor 13 for monitoring the pressure of the gas phase space of the storage tank 1 in real time.
Specifically, the outlet pressure of the transfer pump 2 is about 23bar, which may be a submersible pump or a deep well pump, and is installed inside the tank 1, or may be a horizontal or vertical pump, and is installed outside the tank 1.
Specifically, the first pipeline 16 and the second pipeline 17 are arranged in parallel, alternatively, the first pipeline 16 is provided with a first pressure control valve 8, and the second pipeline 17 is provided with a second pressure control valve 9, the jet injector 3, the first heat exchanger 4 and the one-way check valve 12 in sequence.
Specifically, the first pressure control valve 8 and the second pressure control valve 9 may be electrically, pneumatically or hydraulically driven, and controlled by a pressure sensor 13 at the top of the storage tank 1, the on-off states of the first pressure control valve 8 and the second pressure control valve 9 are controlled according to the pressure of the gas phase space in the storage tank 1, the jet injector 3 is provided with a drainage port, a suction port and a discharge port, the drainage port is connected with the second pressure control valve 9, the suction port is connected with the volatile gas pipeline 18, the discharge port is connected with the first heat exchanger 4, the first heat exchanger 4 may be a plate shell type heat exchanger, a shell and tube type heat exchanger or a coiled tube type heat exchanger, the first heat exchanger 4 cools and liquefies the mixed liquid of liquid ammonia and ammonia volatile gas from the jet injector 3, the cooling medium for cooling may be fresh water, seawater or ethylene glycol solution, and the one-way check valve 12 is installed on the pipeline between the first heat exchanger 4 and the buffer tank 5 to prevent ammonia in the buffer tank 5 from flowing back.
Specifically, the buffer tank 5 is configured to receive liquid ammonia from the first pipeline 16 or the second pipeline 17, the buffer tank 5 is provided with a liquid level sensor 14, the liquid level sensor 14 may be a radar type or a float type, the buffer tank 5 is connected with an ammonia fuel supply pipeline 19 and a liquid ammonia back tank pipeline 20, the ammonia fuel supply pipeline 19 is provided with a booster pump 6 and a second heat exchanger 7, the booster pump 6 may be a volumetric pump or a centrifugal pump, the outlet pressure is about 83bar gauge, the second heat exchanger 7 may be a plate shell type heat exchanger, a shell and tube heat exchanger or a coiled tube type heat exchanger, after the booster pump 6 boosts the liquid ammonia, the second heat exchanger 7 cools the liquid ammonia to normal temperature (25-40 ℃) to meet the use requirement of the ammonia fuel device 21, a cooling medium for cooling may be fresh water, seawater or ethylene glycol solution, one end of the liquid ammonia back tank pipeline 20 is connected to the bottom of the buffer tank 5, and the other end of the back tank pipeline 20 extends to a position close to the bottom in the storage tank 1. The liquid ammonia back tank pipeline 20 is provided with a liquid level control valve 10 and a throttle valve 11, the liquid level control valve 10 can be driven electrically, pneumatically or hydraulically, the liquid level control valve 10 is controlled to be opened and closed by a liquid level sensor 14 arranged on the buffer tank 5 body, and the throttle valve 11 throttles and decompresses the liquid ammonia of the back tank, so that the pressure of the liquid ammonia of the back tank is reduced to be slightly higher than the gas phase space pressure of the storage tank 1 from about 20bar gauge pressure in the storage tank 1.
A method of using an ammonia fuel delivery system, comprising the steps of:
the method comprises the steps that firstly, a delivery pump 2 outputs liquid ammonia in a storage tank 1 through a liquid ammonia delivery pipeline 15, the pressure of a gas phase space in the storage tank 1 is monitored through a pressure sensor 13, and one of a first pipeline 16 and a second pipeline 17 which are parallel is selected according to the pressure in the storage tank 1;
when the pressure in the storage tank 1 is lower than a set value (the set value can be arbitrarily selected between the maximum design pressure and the normal pressure of the storage tank 1), the first pressure control valve 8 is opened, the second pressure control valve 9 is closed, and the liquid ammonia is conveyed to the buffer tank 5 through the first pipeline 16;
when the pressure in the storage tank 1 is higher than a set value, the first pressure control valve 8 is closed, the second pressure control valve 9 is opened, liquid ammonia from the delivery pump 2 enters the jet injector 3 from the drainage port, the pressure of the liquid ammonia is reduced through the jet nozzle, the flow speed is increased, a low-pressure area is formed in the jet injector 3, the low-pressure area is connected with the volatile gas pipeline 18 through the suction port, excessive volatile ammonia in the storage tank 1 enters the jet injector 3 from the suction port through the volatile gas pipeline 18 under the action of pressure difference, and is mixed with the liquid ammonia in the jet injector 3 to form a gas-liquid mixed solution, and the mixed solution discharged by the jet injector 3 is cooled and liquefied through the first heat exchanger 4 and then enters the buffer tank 5;
step four, after the liquid ammonia in the buffer tank 5 is pressurized and cooled by the booster pump 6 and the second heat exchanger 7, the pressure and the temperature meet the requirements of the ammonia fuel equipment 21, and the liquid ammonia is used as fuel to be conveyed to the ammonia fuel equipment 21;
when the quantity of liquid ammonia (including the quantity conveyed by a conveying pump 2 and the quantity liquefied by volatilized ammonia) from a storage tank 1 exceeds the requirement of ammonia fuel equipment 21, the liquid level of the liquid ammonia in a buffer tank 5 rises, when the liquid level exceeds a high-level set value, a liquid level sensor 14 arranged on the buffer tank 5 sends out a signal, a liquid level control valve 10 is controlled to open, the buffer tank 5 is communicated with the storage tank 1 through a liquid ammonia back tank pipeline 20, and the back tank liquid ammonia is throttled and depressurized by a throttle valve 11, so that the pressure of the back tank liquid ammonia is reduced to be about 20bar gauge pressure in the storage tank 1 and slightly higher than the gas phase space pressure of the storage tank 1, the temperature of the depressurized liquid ammonia is also reduced, and meanwhile, because the back tank liquid ammonia is conveyed to the bottom of the storage tank 1 and is subjected to the effect of the liquid level static pressure in the storage tank 1, under the dual effects of temperature reduction and static pressure, the back tank liquid ammonia is in a supercooled state, namely part of cold energy enters the storage tank 1 along with the back tank, so that the evaporation quantity of the liquid ammonia in the storage tank 1 is further reduced;
step six, when the liquid level in the buffer tank 5 drops to the low set value, the liquid level sensor 14 on the storage tank 1 controls the liquid level control valve 10 to be closed, the liquid ammonia returning cabin is stopped, and the step 4 of delivering fuel to the ammonia fuel device 21 is not affected in the operation process of the step 5 and the step 6.
The present embodiment is further illustrative of the present invention and is not to be construed as limiting the invention, and those skilled in the art can make no inventive modifications to the present embodiment as required after reading the present specification, but only as long as they are within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides an ammonia fuel feed system, its characterized in that includes storage tank, delivery pump, buffer tank, booster pump, jet injector, heat exchanger and ammonia fuel equipment, connects gradually through the pipeline between the equipment, the pipeline includes liquid ammonia delivery line, first pipeline, second pipeline, volatilizees gas line, ammonia fuel feed line and returns the cabin pipeline, volatilize gas line one end with the top gaseous phase space intercommunication in the storage tank, volatilize gas line's the other end and jet injector's suction inlet be connected, the export of delivery pump is connected with liquid ammonia delivery line, liquid ammonia delivery line is connected with the buffer tank respectively through parallelly connected first pipeline and second pipeline, be equipped with liquid ammonia in the buffer tank, liquid ammonia carries to ammonia fuel equipment through ammonia fuel feed line after the booster pump pressure boost, buffer tank bottom is connected with returns the cabin pipeline, returns cabin pipeline and storage tank intercommunication.
2. The ammonia fuel supply system of claim 1, wherein the storage tank is any one of a type a, a type B, a type C, and a thin film containment system.
3. An ammonia fuel delivery system according to claim 1, wherein the delivery pump is a submersible pump or a deep well pump, the delivery pump being mounted inside a tank.
4. An ammonia fuel delivery system according to claim 1, wherein the delivery pump is a horizontal or vertical pump, the delivery pump being mounted externally to the tank.
5. The ammonia fuel supply system according to claim 1, wherein the first pipeline and the second pipeline are arranged in parallel, a first pressure control valve is arranged on the first pipeline, a second pressure control valve, a jet ejector, a first heat exchanger and a one-way check valve are sequentially arranged on the second pipeline, a pressure sensor is arranged at the top of the storage tank, the first pressure control valve and the second pressure control valve are connected with the pressure sensor through signals, the on-off states of the first pressure control valve and the second pressure control valve are controlled according to the pressure of a gas phase space in the storage tank, the jet ejector is provided with a drainage port, a suction port and a discharge port, the drainage port is connected with the second pressure control valve, the suction port is connected with a volatilizing pipeline, the discharge port is connected with the first heat exchanger, the first heat exchanger cools and liquefies a mixed liquid of liquid ammonia and ammonia volatilizing gas from the jet ejector, and the one-way check valve is arranged on the pipeline between the first heat exchanger and the buffer tank.
6. The ammonia fuel supply system according to claim 1, wherein the buffer tank receives liquid ammonia from the first pipeline or the second pipeline, a liquid level sensor is arranged on the buffer tank, the buffer tank is connected with the ammonia fuel supply pipeline and the liquid ammonia tank returning pipeline, a booster pump and a second heat exchanger are arranged on the ammonia fuel supply pipeline, the booster pump and the second heat exchanger are used for supplying ammonia fuel after boosting and cooling the liquid ammonia to normal temperature, one end of the liquid ammonia tank returning pipeline is connected with the bottom of the buffer tank, and the other end of the liquid ammonia tank returning pipeline extends to a position close to the bottom in the storage tank.
7. The ammonia fuel supply system according to claim 6, wherein a liquid level control valve and a throttle valve are arranged on the liquid ammonia returning tank pipeline, the liquid level control valve is controlled by a liquid level sensor arranged on the buffer tank body, and the throttle valve throttles and decompresses liquid ammonia returning tank.
8. A method of using an ammonia fuel delivery system according to any one of claims 1-7, wherein the method comprises the steps of:
the method comprises the steps that firstly, a delivery pump outputs liquid ammonia in a storage tank through a liquid ammonia delivery pipeline, the pressure of a gas phase space in the storage tank is monitored through a pressure sensor, and one of a first pipeline and a second pipeline which are parallel is selected according to the pressure in the storage tank;
when the pressure in the storage tank is lower than a set value, the first pressure control valve is opened, the second pressure control valve is closed, and the liquid ammonia is conveyed to the buffer tank through the first pipeline;
when the pressure in the storage tank is higher than a set value, the first pressure control valve is closed, the second pressure control valve is opened, liquid ammonia from the delivery pump enters the jet ejector through the drainage port, the pressure of the liquid ammonia is reduced through the jet nozzle, the flow speed is increased, a low-pressure area is formed in the jet ejector, the low-pressure area is connected with the volatilizing air pipeline through the suction port, excessive volatilizing ammonia in the storage tank enters the jet ejector through the pumping port of the volatilizing air pipeline under the action of pressure difference, and is mixed with the liquid ammonia in the jet ejector to form gas-liquid mixed liquid, and the mixed liquid discharged by the jet ejector enters the buffer tank after being cooled and liquefied through the first heat exchanger;
step four, after the liquid ammonia in the buffer tank is pressurized and cooled by the booster pump and the second heat exchanger, the pressure and the temperature meet the requirements of ammonia fuel equipment, and the liquid ammonia is used as fuel to be conveyed to the ammonia fuel equipment;
when the amount of liquid ammonia from the storage tank exceeds the requirement of ammonia fuel equipment, the liquid level of the liquid ammonia in the buffer tank rises, when the liquid level exceeds a high-level set value, a liquid level sensor arranged on the buffer tank sends out a signal to control a liquid level control valve to be opened, the buffer tank is communicated with the storage tank through a liquid ammonia returning tank pipeline, the temperature of the returning tank liquid ammonia is reduced while throttling and depressurizing through a throttle valve, when the returning tank liquid ammonia is conveyed to the bottom of the storage tank, the returning tank liquid ammonia is under the action of liquid level static pressure in the storage tank, and under the dual actions of temperature reduction and static pressure, the returning tank liquid ammonia is in a supercooled state, namely part of cold energy enters the storage tank along with the returning tank liquid ammonia;
and step six, when the liquid level in the buffer tank is reduced to a low-level set value, a liquid level sensor on the storage tank controls a liquid level control valve to be closed, liquid ammonia returning is stopped, and step 4 of delivering fuel to the ammonia fuel equipment is not affected in the operation process of step 5 and step 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311178914.2A CN117211998A (en) | 2023-09-13 | 2023-09-13 | Ammonia fuel supply system and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311178914.2A CN117211998A (en) | 2023-09-13 | 2023-09-13 | Ammonia fuel supply system and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117211998A true CN117211998A (en) | 2023-12-12 |
Family
ID=89045670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311178914.2A Pending CN117211998A (en) | 2023-09-13 | 2023-09-13 | Ammonia fuel supply system and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117211998A (en) |
-
2023
- 2023-09-13 CN CN202311178914.2A patent/CN117211998A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112696289A (en) | Marine liquid ammonia fuel supply and fuel recycle system | |
| CN101952635B (en) | Natural gas supply method and apparatus | |
| CN100488838C (en) | Device for supplying fuel to an energy production installation of a ship | |
| CN214533292U (en) | Marine liquid ammonia fuel supply and fuel recycle system | |
| KR100714090B1 (en) | Regasification system in electric propulsion lngc | |
| CN104165266B (en) | A kind of pressure reduction formula liquefied natural gas filling station adds injection system and method thereof | |
| CN117211998A (en) | Ammonia fuel supply system and use method thereof | |
| CN107514541B (en) | Floating liquefied natural gas storage and gasification device, control system and control method | |
| KR101153660B1 (en) | Device for supplying fuel to an energy producing installation of a ship | |
| CN207316464U (en) | Floating Liquefied Natural Gas stores and gasification installation, control system | |
| CN114954885B (en) | Ammonia fuel supply system and ship | |
| CN107208559B (en) | System and method for controlling fuel supply of ship engine | |
| CN110878725A (en) | Cooling system of dual-fuel low-speed engine on LNG power ship | |
| CN214092075U (en) | Ammonia fuel tank ship power gas supply system | |
| CN211738637U (en) | Liquefied gas storage tank boil-off gas processing system | |
| CN210179314U (en) | Marine LNG gas supply system | |
| CN211624850U (en) | Marine LNG fuel individual layer storage tank system | |
| CN113063086B (en) | Natural gas treatment system for ship engine | |
| CN204003017U (en) | Ship machine SCR joint-track type adds blue ejecting system | |
| CN203176717U (en) | Carbon dioxide pressurizing and deeply-burying device | |
| CN207745706U (en) | Limestone slurry liquid supply system | |
| CN215442145U (en) | No negative pressure intelligence water supply equipment | |
| CN111322176A (en) | Marine LNG gas supply conveying system that reliability is high | |
| CN115095452B (en) | Gas supply system of gas engine test bed and control method | |
| CN219036295U (en) | LNG high-pressure gas supply system of sea ship |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |