CN216693053U - Liquid ammonia gasification system for ammonia decomposition hydrogen production power generation system and power generation system - Google Patents
Liquid ammonia gasification system for ammonia decomposition hydrogen production power generation system and power generation system Download PDFInfo
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- CN216693053U CN216693053U CN202122986451.5U CN202122986451U CN216693053U CN 216693053 U CN216693053 U CN 216693053U CN 202122986451 U CN202122986451 U CN 202122986451U CN 216693053 U CN216693053 U CN 216693053U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The utility model discloses a liquid ammonia gasification system and a power generation system for an ammonia decomposition hydrogen production power generation system, wherein a gasification device is arranged to be connected with an external liquid ammonia supply part and the ammonia decomposition hydrogen production device, and a circulating medium pipeline is further arranged to be communicated with the gasification device, so that liquid ammonia is gasified in a water bath through a circulating medium to form gaseous ammonia; the first heat exchanger and the temperature control valve are respectively arranged on the circulating medium pipeline, the hot end of the first heat exchanger is connected with the gas turbine exhaust of the gas turbine, so that the circulating medium can be coupled with the gas turbine exhaust for heat exchange, the circulating medium is heated and then conveyed to the temperature control valve, the temperature of the circulating medium output to the gasification device is controlled by the temperature control valve, the circulating medium is heated by the gas turbine exhaust generated by the gas turbine, the waste heat utilization of the gas turbine exhaust is realized, the additional energy consumption is not needed, and the problem of high energy consumption of a liquid ammonia gasification process in the existing ammonia decomposition hydrogen production power generation system is solved.
Description
Technical Field
The utility model belongs to the technical field of ammonia decomposition hydrogen production power generation, and particularly relates to a liquid ammonia gasification system and a power generation system for an ammonia decomposition hydrogen production power generation system.
Background
Reduction of carbon dioxide emissions has been a problem under peak carbon demand, carbon neutralization target requirements, and aims to reduce the consumption of fossil fuels and to convert them into energy sources instead of fossil fuels. Since ammonia and hydrogen do not contain carbon, i.e., carbon dioxide is not produced upon combustion, much attention is paid to reducing carbon emissions. However, hydrogen is difficult to store and transport, and thus it is difficult to generate electricity as a fuel. And the ammonia is expected to be a carrier of future energy because the storage and transportation technology is established.
In the existing ammonia decomposition hydrogen production power generation system, a water bath is usually adopted to gasify liquid ammonia, but a device for heating water needs to be separately arranged, and a large amount of energy is needed for heating, so that the power consumption of the power generation system is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a liquid ammonia gasification system and a power generation system for an ammonia decomposition hydrogen production power generation system, so as to solve the problem of high energy consumption of a liquid ammonia gasification process in the existing ammonia decomposition hydrogen production power generation system.
In order to solve the problems, the technical scheme of the utility model is as follows:
the utility model relates to a liquid ammonia gasification system for an ammonia decomposition hydrogen production power generation system, which comprises an ammonia decomposition device for decomposing gaseous ammonia to generate hydrogen mixed gas containing hydrogen, nitrogen and a small amount of gaseous ammonia and a gas turbine for burning the hydrogen mixed gas to generate power, and comprises:
the liquid ammonia input end of the gasification device is communicated with an external liquid ammonia supply part, and the gaseous ammonia output end of the gasification device is communicated with the input end of the ammonia decomposition hydrogen production device;
the circulating medium pipeline is filled with a circulating medium, and two ends of the circulating medium pipeline are respectively communicated with a circulating medium input end and a circulating medium output end of the gasification device;
the cold end of the first heat exchanger is communicated with the circulating medium pipeline, and the hot end of the first heat exchanger is connected with the combustion engine exhaust generated by the gas turbine and is used for realizing the coupling heat exchange of the circulating medium and the combustion engine exhaust;
and the temperature control valve is arranged on the circulating medium pipeline, is positioned at the downstream of the first heat exchanger and is used for controlling the temperature of the circulating medium output to the gasification device.
According to the liquid ammonia gasification system for the ammonia decomposition hydrogen production power generation system, the circulating medium pipeline comprises an input pipeline, a middle pipeline and an output pipeline which are sequentially communicated;
the input end of the input pipeline is communicated with the circulating medium input end;
the output end of the output pipeline is communicated with the circulating medium output end;
the input pipeline is provided with a driving unit for driving a circulating medium;
the intermediate pipeline is communicated with the cold end of the first heat exchanger;
the temperature control valve is arranged between the middle pipeline and the output pipeline.
The liquid ammonia gasification system for the ammonia decomposition hydrogen production power generation system also comprises a second heat exchanger;
and the cold end of the second heat exchanger is communicated with the intermediate pipeline, the second heat exchanger is positioned at the upstream of the first heat exchanger, and the hot end of the second heat exchanger is connected with the hydrogen mixed gas generated by the ammonia decomposition device and is used for realizing the coupling heat exchange of the circulating medium and the hydrogen mixed gas.
The liquid ammonia gasification system for the ammonia decomposition hydrogen production power generation system also comprises a middle branch; the input end of the middle branch is communicated with the middle pipeline, and the input end of the middle branch is positioned between the first heat exchanger and the second heat exchanger; the output end of the middle branch is communicated with the temperature control valve.
The driving unit of the liquid ammonia gasification system for the ammonia decomposition hydrogen production power generation system comprises a water tank and a water pump which are arranged on the input pipeline.
According to the liquid ammonia gasification system for the ammonia decomposition hydrogen production power generation system, the circulating medium is water or water/ethylene glycol mixed liquid.
The liquid ammonia gasification system for the ammonia decomposition hydrogen production power generation system is characterized in that the gasification device is a water bath type gasifier.
The utility model provides a power generation system, which comprises a liquid ammonia gasification system for an ammonia decomposition hydrogen production power generation system.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following advantages and positive effects:
1. according to one embodiment of the utility model, a gasification device is arranged to be connected with an external liquid ammonia supply part and an ammonia decomposition hydrogen production device, and a circulating medium pipeline is further arranged to be communicated with the gasification device, so that liquid ammonia is gasified in a water bath through a circulating medium to form gaseous ammonia; the first heat exchanger and the temperature control valve are respectively arranged on the circulating medium pipeline, the hot end of the first heat exchanger is connected with the gas turbine exhaust of the gas turbine, so that the circulating medium can be coupled with the gas turbine exhaust for heat exchange, the circulating medium is heated and then conveyed to the temperature control valve, the temperature of the circulating medium output to the gasification device is controlled by the temperature control valve, the circulating medium is heated by the gas turbine exhaust generated by the gas turbine, the waste heat of the gas turbine exhaust is utilized, additional energy consumption is not needed, the circulating medium heating device is not needed to be arranged on the circulating medium pipeline, and the problem that the energy consumption of a liquid ammonia gasification process in the conventional ammonia decomposition hydrogen production power generation system is high is solved.
2. In one embodiment of the utility model, the second heat exchanger is arranged on the intermediate pipeline, so that the circulating medium can exchange heat with the hydrogen gas mixture generated by the ammonia decomposition device, and heat in the hydrogen gas mixture is absorbed to heat the circulating medium, so that firstly, the waste heat utilization of the hydrogen gas mixture is realized, and the overall energy utilization rate is improved; secondly, the hydrogen mixed gas entering the next working procedure is cooled, and a hydrogen mixed gas cooling device does not need to be additionally arranged.
3. In one embodiment of the utility model, the middle branch is arranged between the first heat exchanger and the second heat exchanger, and the circulating medium which is subjected to coupling heat exchange with the hydrogen mixture is directly guided to the temperature control valve by the middle branch, so that the temperature control valve can receive two circulating medium sources, namely the circulating medium which is subjected to coupling heat exchange with the hydrogen mixture only and the circulating medium which is subjected to coupling heat exchange with the hydrogen mixture and the exhaust of the combustion engine, the temperature control valve can adjust the input proportion of the two circulating media according to the temperature of the circulating medium which needs to be output, and the aim of adjusting the temperature of the output circulating medium is finally fulfilled.
Drawings
Fig. 1 is a schematic diagram of a liquid ammonia gasification system for an ammonia decomposition hydrogen production power generation system according to the present invention.
Description of reference numerals: 1: a liquid ammonia tank; 2: a gasification device; 3: a gaseous ammonia preheat heat exchanger; 4: an ammonia decomposition device; 5: a second heat exchanger; 6: a compressor; 7: a hydrogen storage surge tank; 8: a gas turbine; 9: a post-combustion device; 10: a heat regenerator; 11: a temperature control valve; 12: a water tank; 13: a water pump; 14: a first heat exchanger; 15: an input pipeline; 16: an intermediate pipeline; 17: an output pipeline; 18: a middle branch.
Detailed Description
The liquid ammonia gasification system and the power generation system for ammonia decomposition hydrogen production power generation system according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
The ammonia decomposition hydrogen production power generation system applied in the present embodiment specifically includes a liquid ammonia gasification system for gasifying liquid ammonia, an ammonia decomposition device 4 for generating hydrogen, and a gas turbine 8 for combusting hydrogen to generate power. The specific flow is that liquid ammonia is exported by liquid ammonia jar 1 to gasification formation gaseous ammonia to gasification device 2, and gaseous ammonia gets into ammonia decomposition device 4 and decomposes after gaseous ammonia preheats heat exchanger 3 preheats, forms the hydrogen gas mixture who includes hydrogen, nitrogen gas and a small amount of gaseous ammonia, and this hydrogen gas mixture is compressed through compressor 6 and is got into hydrogen storage surge tank 7 and store and stably export to gas turbine 8, carries out combustion power generation by gas turbine 8. A afterburning device 9 is arranged between the hydrogen storage pressure stabilizing tank 7 and the ammonia decomposition device 4 for afterburning. The gas turbine exhaust generated by the gas turbine 8 is conveyed to the ammonia decomposition device 4 to provide reaction temperature, and a heat regenerator 10 is arranged to lead out the gas turbine exhaust after waste heat utilization to preheat compressed air in the gas turbine 8.
Referring to fig. 1, in one embodiment, a liquid ammonia gasification system for an ammonia decomposition hydrogen production power generation system includes a gasification device 2, a circulation medium pipeline, a first heat exchanger 14, and a temperature control valve 11.
Wherein, the liquid ammonia input end of gasification device 2 and outside liquid ammonia provide the portion intercommunication, and the gaseous state ammonia output of gasification device 2 and the input intercommunication of ammonia decomposition hydrogen plant. The circulating medium pipeline is filled with a circulating medium, and two ends of the circulating medium pipeline are respectively communicated with the circulating medium input end and the circulating medium output end of the gasification device 2.
The cold end of the first heat exchanger 14 is communicated with a circulating medium pipeline, and the hot end of the first heat exchanger 14 is connected with combustion engine exhaust gas generated by the gas turbine 8, so that the coupled heat exchange of the circulating medium and the combustion engine exhaust gas is realized. The temperature control valve 11 is disposed on the circulation medium pipeline, and the temperature control valve 11 is located downstream of the first heat exchanger 14, and is used for controlling the temperature of the circulation medium output to the gasification device 2.
This embodiment provides portion and ammonia decomposition hydrogen plant with outside liquid ammonia through setting up gasification equipment 2 and is connected to further set up this gasification equipment 2 of circulation medium pipeline intercommunication, thereby carry out water bath gasification to liquid ammonia through the circulation medium and form gaseous ammonia. In the embodiment, the first heat exchanger 14 and the temperature control valve 11 are respectively arranged on the circulating medium pipeline, the hot end of the first heat exchanger 14 is connected with the gas turbine exhaust of the gas turbine 8, so that the circulating medium can be coupled with the gas turbine exhaust for heat exchange, the circulating medium is heated and then conveyed to the temperature control valve 11, the temperature of the circulating medium output to the gasification device 2 is controlled by the temperature control valve 11, the circulating medium is heated by the gas turbine exhaust produced by the gas turbine 8, the waste heat of the gas turbine exhaust is utilized, no additional energy consumption is needed, and a circulating medium heating device is not needed to be arranged on the circulating medium pipeline, so that the problem of high energy consumption in a liquid ammonia gasification process in the existing ammonia decomposition hydrogen production system is solved.
The specific structure of the liquid ammonia gasification system for an ammonia decomposition hydrogen production power generation system of the present embodiment is further described below:
in the present embodiment, the circulating medium line includes an input line 15, an intermediate line 16, and an output line 17, which are connected in this order. Wherein the inlet line 15 is provided with a drive unit for driving the circulating medium. The input end and the output end of the input pipeline 15 are respectively communicated with the circulating medium input end and the circulating medium output end. The intermediate pipeline 16 is communicated with the cold end of the first heat exchanger 14, namely, the circulating medium is coupled and exchanges heat with the exhaust gas of the combustion engine in the part of the intermediate pipeline 16. The thermostatic valve 11 is arranged between the intermediate line 16 and the outlet line 17 and controls the temperature of the circulating medium entering the outlet line 17.
In the present embodiment, the liquid ammonia gasification system for an ammonia decomposition hydrogen production power generation system may further include a second heat exchanger 5. The cold end of the second heat exchanger 5 is communicated with the intermediate pipeline 16, the second heat exchanger 5 is positioned at the upstream of the first heat exchanger 14, and the hot end of the second heat exchanger 5 is connected with the hydrogen mixed gas generated by the ammonia decomposition device 4, so that the coupling heat exchange of the circulating medium and the hydrogen mixed gas is realized.
The second heat exchanger 5 is arranged on the intermediate pipeline 16, so that the circulating medium can exchange heat with the hydrogen mixed gas generated by the ammonia decomposition device 4, and heat in the hydrogen mixed gas is absorbed to heat the circulating medium, so that the waste heat utilization of the hydrogen mixed gas is realized, and the integral energy utilization rate is improved; secondly, the hydrogen mixed gas entering the next working procedure is cooled, and a hydrogen mixed gas cooling device does not need to be additionally arranged.
Further, the liquid ammonia gasification system may also include an intermediate branch 18. The input end of the intermediate branch 18 is communicated with the intermediate pipeline 16, the input end of the intermediate branch 18 is positioned between the first heat exchanger 14 and the second heat exchanger 5, and the output end of the intermediate branch 18 is communicated with the thermostatic valve 11.
By arranging the middle branch 18 between the first heat exchanger 14 and the second heat exchanger 5, the middle branch 18 directly guides the circulating medium which is coupled with the hydrogen mixture for heat exchange to the temperature control valve 11, so that the temperature control valve 11 can receive two circulating medium sources, namely the circulating medium which is only coupled with the hydrogen mixture for heat exchange, and the circulating medium which is coupled with the hydrogen mixture and the exhaust gas of the combustion engine for heat exchange, the temperature control valve 11 can adjust the input proportion of the two circulating media according to the temperature of the circulating medium which needs to be output, and finally the aim of adjusting the temperature of the output circulating medium is fulfilled.
In the present embodiment, the driving unit may specifically include a water tank 12 and a water pump 13 disposed on the input pipeline 15. The circulating medium can be water or water/glycol mixed solution, and the gasification device 2 can be a water bath type gasifier.
In the present embodiment, the first heat exchanger 14 and the second heat exchanger 5 may both be a dividing wall type heat exchanger. Of course, in other embodiments, the type of the heat exchanger is not limited to the above-mentioned types, and only needs to satisfy the heat exchange requirement, and is not specifically limited herein.
Example two
The power generation system provided by the present embodiment includes the liquid ammonia gasification system for an ammonia decomposition hydrogen production power generation system in the first embodiment. Come to provide portion and ammonia decomposition hydrogen plant with outside liquid ammonia through setting up gasification equipment 2 and be connected to further set up this gasification equipment 2 of circulation medium pipeline intercommunication, thereby carry out water bath gasification to liquid ammonia through the circulation medium and form gaseous ammonia. In the embodiment, the first heat exchanger 14 and the temperature control valve 11 are respectively arranged on the circulating medium pipeline, the hot end of the first heat exchanger 14 is connected with the gas turbine exhaust of the gas turbine 8, so that the circulating medium can be coupled with the gas turbine exhaust for heat exchange, the circulating medium is heated and then conveyed to the temperature control valve 11, the temperature of the circulating medium output to the gasification device 2 is controlled by the temperature control valve 11, the circulating medium is heated by the gas turbine exhaust produced by the gas turbine 8, the waste heat of the gas turbine exhaust is utilized, no additional energy consumption is needed, and a circulating medium heating device is not needed to be arranged on the circulating medium pipeline, so that the problem of high energy consumption in a liquid ammonia gasification process in the existing ammonia decomposition hydrogen production system is solved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (8)
1. The utility model provides a liquid ammonia gasification system for ammonia decomposition hydrogen production power generation system, its characterized in that, ammonia decomposition hydrogen production power generation system includes the ammonia decomposition device that is used for decomposing gaseous ammonia formation to include the hydrogen gas mixture of hydrogen, nitrogen gas and a small amount of gaseous ammonia and is used for burning the gas turbine that the hydrogen gas mixture generated electricity includes:
the liquid ammonia input end of the gasification device is communicated with an external liquid ammonia supply part, and the gaseous ammonia output end of the gasification device is communicated with the input end of the ammonia decomposition hydrogen production device;
the circulating medium pipeline is filled with a circulating medium, and two ends of the circulating medium pipeline are respectively communicated with a circulating medium input end and a circulating medium output end of the gasification device;
the cold end of the first heat exchanger is communicated with the circulating medium pipeline, and the hot end of the first heat exchanger is connected with the combustion engine exhaust generated by the gas turbine and is used for realizing the coupling heat exchange of the circulating medium and the combustion engine exhaust;
and the temperature control valve is arranged on the circulating medium pipeline, is positioned at the downstream of the first heat exchanger and is used for controlling the temperature of the circulating medium output to the gasification device.
2. The liquid ammonia gasification system for an ammonia decomposition hydrogen production power generation system according to claim 1, wherein the circulating medium pipeline comprises an input pipeline, an intermediate pipeline and an output pipeline which are communicated in sequence;
the input end of the input pipeline is communicated with the circulating medium input end;
the output end of the output pipeline is communicated with the circulating medium output end;
the input pipeline is provided with a driving unit for driving a circulating medium;
the intermediate pipeline is communicated with the cold end of the first heat exchanger;
the temperature control valve is arranged between the middle pipeline and the output pipeline.
3. The system for gasifying liquid ammonia for use in a system for producing hydrogen and electricity from decomposition of ammonia according to claim 2, further comprising a second heat exchanger;
and the cold end of the second heat exchanger is communicated with the intermediate pipeline, the second heat exchanger is positioned at the upstream of the first heat exchanger, and the hot end of the second heat exchanger is connected with the hydrogen mixed gas generated by the ammonia decomposition device and is used for realizing the coupling heat exchange of the circulating medium and the hydrogen mixed gas.
4. The system for gasifying liquid ammonia for use in a system for producing hydrogen and electricity from the decomposition of ammonia according to claim 3, further comprising a middle branch; the input end of the middle branch is communicated with the middle pipeline, and the input end of the middle branch is positioned between the first heat exchanger and the second heat exchanger; the output end of the middle branch is communicated with the temperature control valve.
5. The system of claim 2, wherein the driving unit comprises a water tank and a water pump disposed on the input pipeline.
6. The system of claim 1, wherein the circulating medium is water or a water/glycol mixture.
7. The system for gasifying liquid ammonia for use in a system for generating power from hydrogen through ammonia decomposition of claim 1, wherein said gasification apparatus is a water bath gasifier.
8. A power generation system comprising a liquid ammonia gasification system for an ammonia decomposition hydrogen production power generation system according to any one of claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115092884A (en) * | 2022-07-14 | 2022-09-23 | 招商局海洋装备研究院有限公司 | Self-heating ammonia decomposition hydrogen production device and hydrogen production method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115092884A (en) * | 2022-07-14 | 2022-09-23 | 招商局海洋装备研究院有限公司 | Self-heating ammonia decomposition hydrogen production device and hydrogen production method thereof |
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