CN117823251A - High-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing synthesis gas turbine to generate power - Google Patents
High-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing synthesis gas turbine to generate power Download PDFInfo
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- CN117823251A CN117823251A CN202311835122.8A CN202311835122A CN117823251A CN 117823251 A CN117823251 A CN 117823251A CN 202311835122 A CN202311835122 A CN 202311835122A CN 117823251 A CN117823251 A CN 117823251A
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 351
- 239000001257 hydrogen Substances 0.000 title claims abstract description 112
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 112
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000007789 gas Substances 0.000 title claims abstract description 61
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 51
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 17
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 142
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 54
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000003860 storage Methods 0.000 claims abstract description 38
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 23
- 238000001179 sorption measurement Methods 0.000 claims abstract description 23
- 238000010248 power generation Methods 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims abstract description 20
- 238000004146 energy storage Methods 0.000 claims abstract description 20
- 230000007704 transition Effects 0.000 claims abstract description 15
- 239000000446 fuel Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 21
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 12
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 12
- 239000006096 absorbing agent Substances 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 20
- 230000008569 process Effects 0.000 description 10
- 239000000047 product Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000000746 purification Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000012264 purified product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a high-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing a synthetic gas turbine to generate electricity, belonging to the field of hydrogen production and electricity generation, wherein liquid ammonia raw materials in a liquid ammonia storage tank are utilized to produce hydrogen and electricity; the system drives the turbine to generate electricity through the high-temperature and high-pressure synthesis gas, and the waste heat of the synthesis gas at the outlet of the turbine in turn heats the liquid ammonia through the heat exchanger to provide heat for catalytic combustion and the system, so that the problems of low energy utilization rate of the ammonia decomposition hydrogen production system, tail gas pollution when ammonia is used as fuel and the like are solved, and the energy loss and the system complexity are reduced. The system comprises a liquid ammonia storage tank, a liquid ammonia pump, a heat exchanger, a four-way valve, an ammonia treatment device, a turbine power generation assembly, an energy storage battery, an ammonia adsorber, a transition tank, a pressure swing adsorption device, a nitrogen storage tank and a hydrogen collection assembly, wherein two inlets of the four-way valve are respectively communicated with a cold end outlet of the heat exchanger and the transition tank, and outlets are respectively communicated with an ammonia decomposition side and a catalytic combustion side of the ammonia treatment device. Realizing the functions of producing hydrogen by decomposing ammonia, storing hydrogen and generating electricity.
Description
Technical Field
The invention belongs to the technical field of hydrogen production equipment, and particularly relates to a high-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing a synthesis gas turbine to generate power.
Background
The hydrogen energy has the characteristics of rich sources, high energy density, green low carbon and the like, and is regarded as clean energy with the most development potential in the 21 st century; the ammonia-rich hydrogen-rich fuel is easy to transport, does not produce carbon emission as fuel, is friendly in price and the like, is a novel clean energy source with wide application prospect, takes ammonia as a hydrogen-rich substance, contains 17.6 mass percent of hydrogen, is an ideal carrier of hydrogen, supplies hydrogen with ammonia, and takes ammonia as one of the development trends of hydrogen energy. The hydrogen is used as a high-energy fuel and clean secondary energy, can be applied to the aerospace industry such as spaceflight aircraft, rocket and the like, and is used for protecting gas, food processing and the like in the electronic industry, and has high heat value and no pollution, so that the application of the hydrogen is widely paid attention to, the problem of resource shortage can be solved, and the problem of environmental pollution can be reduced. In the context of "two carbon," as ammonia fuel utilization matures, the hydrogen-ammonia mode will take a greater role and play in our energy strategy system.
However, in actual operating conditions, ammonia is difficult to burn completely, and exhaust gas containing nitrogen oxides is produced to cause environmental pollution. In general, a large amount of energy is needed to decompose ammonia gas when the synthesis gas is decomposed by liquid ammonia to prepare hydrogen, the energy utilization rate of the system is low, and the equipment is complex.
Therefore, how to provide a high-energy-efficiency liquid ammonia hydrogen production hydrogenation system which has high energy utilization rate and simple equipment and utilizes a synthesis gas turbine to generate electricity is a problem which needs to be solved by the technicians in the field.
Disclosure of Invention
In view of the above, the invention provides a high-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing a synthesis gas turbine to generate electricity, which solves the problems of low energy utilization rate, high energy consumption and the like of an ammonia decomposition hydrogen production system.
In order to achieve the above purpose, the invention adopts the following technical scheme: an energy efficient liquid ammonia hydrogen production hydrogenation system utilizing a synthesis gas turbine to generate electricity, comprising: the liquid ammonia storage tank is used for storing liquid ammonia raw materials for hydrogen production;
the cold end inlet of the heat exchanger is connected and communicated with the liquid ammonia storage tank through a liquid ammonia pump, and the cold end outlet of the heat exchanger is connected with the ammonia inlet of the four-way valve;
the ammonia treatment device is provided with a catalytic combustion unit and an ammonia decomposition unit, the catalytic combustion unit supplies heat energy to the ammonia decomposition unit, and two outlets of the four-way valve are respectively connected and communicated with inlets of the catalytic combustion unit and the ammonia decomposition unit;
the turbine air inlet of the turbine power generation assembly receives the synthesis gas discharged from the air outlet of the ammonia decomposition unit, the turbine air outlet of the turbine power generation assembly is connected with the hot end inlet of the heat exchanger, the hot end outlet of the heat exchanger is connected with the ammonia absorber, the ammonia product outlet of the ammonia absorber is connected and communicated with the inlet of the transition tank, and the outlet of the transition tank is communicated with the ammonia water inlet of the four-way valve;
the inlet of the pressure swing adsorption device is connected and communicated with the hydrogen-nitrogen synthesis gas outlet of the ammonia adsorber, the nitrogen outlet of the pressure swing adsorption device is connected with the nitrogen storage tank, and the hydrogen outlet of the pressure swing adsorption device is connected with the hydrogen collecting assembly;
and the energy storage battery is respectively and electrically connected with the ammonia decomposition unit and the hydrogen collection assembly.
The beneficial effects of the invention are as follows: the raw materials for hydrogen production are stored in the liquid ammonia storage tank, the liquid ammonia is convenient to store, the problem of high storage and transportation cost in the ammonia energy industry can be solved, the liquid ammonia pump is used for pumping the ammonia raw materials in the liquid ammonia storage tank into the heat exchanger, high-heat synthesis gas discharged by the turbine power generation assembly is introduced into the heat exchanger, heat is provided for the liquid ammonia to gasify the liquid ammonia, the input of external energy is reduced, the cascade utilization of the energy is realized, the temperature of the synthesis gas is reduced, and therefore, the system power consumption of hydrogen purification and compression is reduced; ammonia water absorbs heat and gasifies, ammonia enters the catalytic combustion unit through the four-way valve to generate heat energy, combustion efficiency is improved by ammonia combustion, heat energy generated by ammonia combustion is provided for an ammonia decomposition process, energy loss can be reduced, energy utilization efficiency is improved, the integral arrangement of the system is compact and reasonable due to unitized arrangement, electric energy generated by the turbine power generation assembly is reacted in the system, and the produced nitrogen and hydrogen are stored respectively.
Preferably, the liquid ammonia pump pumps liquid ammonia in the liquid ammonia storage tank into a cold end inlet of the heat exchanger, the liquid ammonia is gasified after heat exchange of the heat exchanger and enters the catalytic combustion unit for combustion through a cold end outlet and a four-way valve, and ammonia water in the transition tank enters the ammonia decomposition unit through the four-way valve for decomposition treatment and then is discharged into synthesis gas.
The technical effects produced by the method are as follows: the ammonia water in the heat exchanger absorbs the heat of the synthesis gas, so that the synthesis gas is heated and gasified to form ammonia gas, the synthesis gas releases heat and is cooled, ammonia products, hydrogen products and nitrogen products are separated through the ammonia absorber, the ammonia products enter the ammonia decomposition unit to be decomposed through the four-way valve, and the generated synthesis gas with ammonia enters the turbine power generation assembly to form a circulating process.
Preferably, the turbine power generation assembly comprises a turbine body and a generator, wherein a turbine shaft of the turbine body is in transmission connection with an input shaft of the generator, and the energy storage battery is electrically connected with the generator.
The technical effects produced by the method are as follows: the high-pressure synthesis gas exhausted by the ammonia decomposition unit passes through the air inlet of the turbine body to drive the turbine to rotate, and the turbine drives the turbine shaft to rotate and simultaneously drives the input shaft of the generator to rotate, so that the power generation process of the generator is realized, and the electric energy generated by the generator is stored in the energy storage battery so as to conveniently supply power to the power utilization components of the system.
Preferably, the catalytic combustion unit and the ammonia decomposition unit are integrally arranged, and a heater is arranged at the bottom of the ammonia decomposition unit and is electrically connected with the energy storage battery.
The technical effects produced by the method are as follows: the integrated arrangement of the catalytic combustion and ammonia decomposition device can simplify the structure, save the space, realize the heat supply of the catalytic combustion for the ammonia decomposition process, reduce the energy loss and improve the energy utilization efficiency, and ensure that the overall efficiency of the system is higher and the structure is more compact.
Preferably, the hydrogen collecting assembly comprises a hydrogen buffer tank, a hydrogen compressor and a hydrogen storage tank, wherein an air inlet of the hydrogen buffer tank is connected and communicated with a hydrogen outlet of the pressure swing adsorption device, an air outlet of the hydrogen buffer tank is sequentially connected with the hydrogen compressor and the hydrogen storage tank, and the hydrogen compressor is electrically connected with the energy storage battery.
The technical effects produced by the method are as follows: the pressure swing adsorption device separates nitrogen and ammonia, the nitrogen is collected in a nitrogen storage tank, and the hydrogen is stored in a hydrogen storage tank after being compressed by a compressor.
Preferably, an air inlet is arranged at the inlet of the combustion chamber of the catalytic combustion unit, the outlet of the combustion chamber is communicated with the atmosphere, a catalyst coating for decomposing ammonia is arranged on the decomposing furnace wall of the ammonia decomposing unit, and the synthetic gas outlet of the decomposing furnace is communicated with the turbine air inlet.
The technical effects produced by the method are as follows: the heat generated by the catalytic combustion of the ammonia gas is provided for an ammonia decomposition device, the catalyst coating provides ammonia decomposition conditions, and decomposed ammonia synthesis gas is introduced into a turbine air inlet to do work.
Preferably, the two outlets of the four-way valve are an ammonia outlet and an ammonia outlet respectively, the ammonia outlet is connected and communicated with a fuel inlet of the combustion chamber, and the ammonia outlet is connected and communicated with a feed inlet of the decomposing furnace.
Preferably, the four-way valve regulates the ammonia flow of the ammonia outlet and the ammonia flow of the ammonia outlet.
The technical effects produced by the method are as follows: the four-way valve is connected with the outlet end of the transition tank, so that ammonia after separation and purification is utilized, the overall fuel utilization rate of the system is improved, and the energy loss is reduced; the four-way valve can adjust the flow of ammonia gas flowing out of the outlet end and can independently adjust the flow of ammonia gas on the combustion side and the decomposition side, so that the heat generated by combustion is just matched with the heat required by decomposition, and the energy utilization rate of the whole system is higher.
Drawings
FIG. 1 is a block diagram of an energy efficient liquid ammonia hydrogen production hydrogenation system utilizing a synthesis gas turbine to generate electricity.
1 liquid ammonia storage tank, 2 liquid ammonia pump, 3 heat exchanger, 4 cross valve, 5 ammonia processing apparatus, 501 catalytic combustion unit, 502 ammonia decomposition unit, 6 turbine body, 7 generator, 8 energy storage battery, 9 heater, 10 ammonia adsorber, 11 transition jar, 12 pressure swing adsorption device, 13 nitrogen storage tank, 14 hydrogen buffer tank, 15 hydrogen compressor, 16 hydrogen storage tank.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 of the present invention, a high energy efficiency liquid ammonia hydrogen production hydrogenation system using a synthesis gas turbine to generate electricity according to an embodiment of the present invention includes: a liquid ammonia storage tank 1, wherein liquid ammonia raw materials for hydrogen production are stored in the liquid ammonia storage tank 1; the ammonia raw material is convenient to store and transport, the storage cost is low, and the use is safer;
the cold end inlet of the heat exchanger 3 is connected and communicated with the liquid ammonia storage tank 1 through the liquid ammonia pump 2, the cold end outlet of the heat exchanger 3 is connected with the ammonia inlet of the four-way valve 4, and the four-way valve is used for introducing ammonia and ammonia water into the ammonia treatment device in a transition control manner;
the ammonia treatment device 5, the ammonia treatment device 5 is provided with a catalytic combustion unit 501 and an ammonia decomposition unit 502, the catalytic combustion unit is used for catalytically combusting ammonia to generate heat energy, the combustion of the ammonia can also reduce the emission of harmful gases, the catalytic combustion unit 501 provides necessary heat energy for the ammonia decomposition process of the ammonia decomposition unit 502, the ammonia decomposition hydrogen production is a chemical reaction, namely, heating liquid ammonia to 800-850 ℃, decomposing the ammonia under the action of a nickel-based catalyst, and obtaining hydrogen-nitrogen mixed gas containing 75% H2 and 25% N2, wherein the mixed gas after the ammonia decomposition is synthesis gas with ammonia due to the influence of catalytic conditions, and two outlets of the four-way valve 4 are respectively connected and communicated with inlets of the catalytic combustion unit 501 and the ammonia decomposition unit 502;
the turbine power generation assembly, the turbine air inlet of the turbine power generation assembly receives the synthesis gas discharged from the air outlet of the ammonia decomposition unit 502, the synthesis gas at the moment has high-heat and high-pressure characteristics, the turbine air outlet of the turbine power generation assembly is connected with the hot end inlet of the heat exchanger 3, the synthesis gas is introduced into the heat exchanger for heat exchange with ammonia water, meanwhile, the synthesis gas self releases heat and lowers the temperature, the energy required by the subsequent separation and purification of nitrogen and hydrogen is reduced, the hot end outlet of the heat exchanger 3 is connected with the ammonia absorber 10, the ammonia absorber can intercept and filter ammonia in the synthesis gas, the ammonia product outlet of the ammonia absorber 10 is connected and communicated with the inlet of the transition tank 11, ammonia in the transition tank is an ammonia product purified by the ammonia absorber, the outlet of the ammonia water of the transition tank 11 is communicated with the inlet of the four-way valve 4, that is, the residual ammonia which is not treated by the ammonia decomposition unit enters the ammonia decomposition unit again by the four-way valve through separation and purification, and the utilization efficiency of energy is improved;
the device comprises a pressure swing adsorption device 12, wherein an inlet of the pressure swing adsorption device 12 is connected and communicated with a hydrogen-nitrogen synthesis gas outlet of an ammonia adsorber 10, after the synthesis gas with ammonia is adsorbed by the ammonia adsorber, the rest hydrogen-nitrogen synthesis gas enters the pressure swing adsorption device, the pressure swing adsorption device adopts a gas adsorption separation technology to separate hydrogen and nitrogen, an adsorbent is arranged in the pressure swing adsorption device, after the synthesis gas is subjected to pressure swing adsorption, a hydrogen product with higher purity can be obtained, a nitrogen outlet of the pressure swing adsorption device 12 is connected with a nitrogen storage tank 13, and a hydrogen outlet of the pressure swing adsorption device 12 is connected with a hydrogen collecting component;
the energy storage battery 8, the energy storage battery 8 is connected with ammonia decomposition unit 502 and hydrogen collection subassembly electricity respectively. The energy of the energy storage battery comes from the turbine power generation assembly, and the energy storage battery supplies power to the power utilization components in the system in turn, so that the resource utilization is optimized;
in other embodiments, the liquid ammonia pump 2 pumps the liquid ammonia in the liquid ammonia storage tank 1 into the cold end inlet of the heat exchanger 3, the liquid ammonia is gasified after heat exchange by the heat exchanger 3 and enters the catalytic combustion unit 501 through the cold end outlet and the four-way valve 4 to burn, and the ammonia water in the transition tank 11 is a purified product and enters the ammonia decomposition unit 502 through the four-way valve 4 to be decomposed and then discharged into the synthesis gas.
The heat exchanger has the function that the ammonia water in the liquid ammonia storage tank fully absorbs the heat of the synthesis gas, the temperature of the synthesis gas is reduced in the process, the energy required by the subsequent separation of nitrogen and hydrogen is reduced, and the efficient utilization of the energy is realized. Meanwhile, the input of external energy is reduced, the cascade utilization of the energy is realized, and the temperature of the synthesis gas is reduced, so that the system power consumption of hydrogen purification and compression is reduced.
In other embodiments, the turbine power generation assembly includes a turbine body 6 and a generator 7, a turbine shaft of the turbine body 6 is in transmission connection with an input shaft of the generator 7, an energy storage battery 8 is electrically connected with the generator 7, and under the condition that high-temperature high-pressure compressed air does work, the turbine is driven to rotate, and the generator completes a power generation process. The electric energy is stored in the energy storage battery to supply power to the system, so that the energy cost and the production cost are reduced, the energy efficiency of the liquid ammonia hydrogen production system is improved, and the cascade utilization of energy is realized.
In other embodiments, the catalytic combustion unit 501 and the ammonia decomposition unit 502 are integrally arranged, the structural space is optimized, the ammonia catalytic combustion process is closely related to the ammonia decomposition process, the energy required by the ammonia decomposition process is supplied by using the heat of ammonia combustion, the energy loss is reduced, the emission of pollutants is reduced, the heater 9 is arranged at the bottom of the ammonia decomposition unit 502, the heater 9 is electrically connected with the energy storage battery 8, and the heater is required to provide the heat required by ammonia decomposition in the initial stage. The ammonia decomposition unit forms high-temperature high-pressure synthesis gas containing hydrogen, nitrogen and a small amount of ammonia gas and outputs the synthesis gas to the turbine body, so that the turbine is pushed to do work to drive the generator to generate electricity.
In other embodiments, the hydrogen collection assembly includes a hydrogen buffer tank 14, a hydrogen compressor 15, and a hydrogen storage tank 16, where an air inlet of the hydrogen buffer tank 14 is connected to and communicated with a hydrogen outlet of the pressure swing adsorption device, an air outlet of the hydrogen buffer tank 14 is sequentially connected to the hydrogen compressor 15 and the hydrogen storage tank 16, the hydrogen compressor 15 is electrically connected to the energy storage battery 8, and when enough hydrogen is in the hydrogen buffer tank, the hydrogen is compressed by the hydrogen compressor and stored in the hydrogen storage tank, and the hydrogen buffer tank provides necessary hydrogen for the hydrogen compressor to compress, and the hydrogen storage tank 16 is used for collecting and utilizing the produced hydrogen.
In other embodiments, the inlet of the combustion chamber of the catalytic combustion unit 501 is provided with an air inlet, the air introduced from the air inlet provides oxygen necessary for ammonia combustion, the air can increase the temperature and speed of the decomposition reaction and reduce the emission of pollutants, and can dilute the concentration of hydrogen to prevent excessive aggregation and explosion, so that the reaction efficiency and safety are improved, the outlet of the combustion chamber is communicated with the atmosphere, the decomposing furnace wall of the ammonia decomposing unit 502 is provided with a catalyst coating for ammonia decomposition, the synthetic gas outlet of the decomposing furnace is communicated with the turbine inlet, the catalytic combustion unit is a traditional catalytic combustion chamber, the ammonia decomposing unit utilizes the existing ammonia decomposing furnace to decompose ammonia water, and the combustion chamber and the decomposing furnace are integrated into an integrated structure, so that the space is saved and the energy utilization efficiency is improved.
In other embodiments, the two outlets of the four-way valve 4 are an ammonia outlet and an ammonia outlet respectively, the ammonia outlet is connected and communicated with the fuel inlet of the combustion chamber, the ammonia outlet is connected and communicated with the feed inlet of the decomposing furnace, the ammonia is introduced into the combustion chamber through the four-way valve for catalytic combustion, and the ammonia enters the decomposing furnace through the four-way valve for decomposing and producing hydrogen.
In other embodiments, the four-way valve 4 regulates the ammonia flow at the ammonia outlet and the ammonia flow at the ammonia outlet.
According to the invention, after absorbing heat and gasifying, the liquid ammonia output by the liquid ammonia storage tank is subjected to catalytic decomposition and pressure swing adsorption to obtain hydrogen with higher purity, and the hydrogen can be stored to meet daily requirements, so that the purpose of combining the power generation of synthesis gas by decomposing the liquid ammonia with the hydrogen production and hydrogen storage is fulfilled.
The invention can produce nitrogen products on the premise of meeting the requirements of hydrogen production, hydrogen storage and system power generation.
For the device and the use method disclosed in the embodiments, since the device and the use method correspond to the method disclosed in the embodiments, the description is relatively simple, and the relevant places refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A high energy efficiency liquid ammonia hydrogen production hydrogenation system utilizing a synthesis gas turbine to generate electricity, comprising: a liquid ammonia storage tank (1), wherein a liquid ammonia raw material for hydrogen production is stored in the liquid ammonia storage tank (1);
the cold end inlet of the heat exchanger (3) is connected and communicated with the liquid ammonia storage tank (1) through the liquid ammonia pump (2), and the cold end outlet of the heat exchanger (3) is connected with the ammonia inlet of the four-way valve (4);
the ammonia treatment device (5), the ammonia treatment device (5) is provided with a catalytic combustion unit (501) and an ammonia decomposition unit (502), the catalytic combustion unit (501) provides heat energy for the ammonia decomposition unit (502), and two outlets of the four-way valve (4) are respectively connected and communicated with the catalytic combustion unit (501) and an inlet of the ammonia decomposition unit (502);
the turbine power generation assembly is characterized in that a turbine air inlet of the turbine power generation assembly receives synthesis gas discharged from an air outlet of an ammonia decomposition unit (502), a turbine air outlet of the turbine power generation assembly is connected with a hot end inlet of a heat exchanger (3), a hot end outlet of the heat exchanger (3) is connected with an ammonia absorber (10), an ammonia product outlet of the ammonia absorber (10) is connected and communicated with an inlet of a transition tank (11), and an outlet of the transition tank (11) is communicated with an ammonia water inlet of the four-way valve (4);
the device comprises a pressure swing adsorption device (12), wherein an inlet of the pressure swing adsorption device (12) is connected and communicated with a hydrogen-nitrogen synthesis gas outlet of an ammonia adsorber (10), a nitrogen outlet of the pressure swing adsorption device (12) is connected with a nitrogen storage tank (13), and a hydrogen outlet of the pressure swing adsorption device (12) is connected with a hydrogen collection assembly;
the energy storage battery (8), energy storage battery (8) respectively with ammonia decomposition unit (502) and hydrogen collection subassembly electricity are connected.
2. The high-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing a synthesis gas turbine to generate electricity according to claim 1, wherein a liquid ammonia pump (2) pumps liquid ammonia in a liquid ammonia storage tank (1) into a cold end inlet of a heat exchanger (3), the liquid ammonia is gasified after heat exchange of the heat exchanger (3) and enters a catalytic combustion unit (501) for combustion through a cold end outlet and a four-way valve (4), and ammonia water in a transition tank (11) enters an ammonia decomposition unit (502) for decomposition treatment through the four-way valve and then is discharged into synthesis gas.
3. The high-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing synthesis gas turbine to generate electricity according to claim 2, wherein the turbine power generation assembly comprises a turbine body (6) and a generator (7), a turbine shaft of the turbine body (6) is in transmission connection with an input shaft of the generator (7), and the energy storage battery (8) is electrically connected with the generator (7).
4. A high energy efficiency liquid ammonia hydrogen production hydrogenation system using synthesis gas turbine for power generation according to claim 3, wherein said catalytic combustion unit (501) and ammonia decomposition unit (502) are integrally arranged, a heater (9) is provided at the bottom of said ammonia decomposition unit (502), and said heater (9) is electrically connected to said energy storage battery (8).
5. The high-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing a synthesis gas turbine to generate electricity according to claim 4, wherein the hydrogen collection assembly comprises a hydrogen buffer tank (14), a hydrogen compressor (15) and a hydrogen storage tank (16), an air inlet of the hydrogen buffer tank (14) is connected and communicated with a hydrogen outlet of the pressure swing adsorption device, an air outlet of the hydrogen buffer tank (14) is sequentially connected with the hydrogen compressor (15) and the hydrogen storage tank (16), and the hydrogen compressor (15) is electrically connected with the energy storage battery (8).
6. The high-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing a synthesis gas turbine to generate electricity according to claim 4, wherein an air inlet is arranged at the inlet of a combustion chamber of the catalytic combustion unit (501), the outlet of the combustion chamber is communicated with the atmosphere, a catalyst coating for ammonia decomposition is arranged on a decomposition furnace wall of the ammonia decomposition unit (502), and a synthesis gas outlet of the decomposition furnace is communicated with a turbine inlet.
7. The high-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing a synthesis gas turbine to generate electricity according to claim 6, wherein two outlets of the four-way valve (4) are an ammonia outlet and an ammonia outlet respectively, the ammonia outlet is connected and communicated with a fuel inlet of the combustion chamber, and the ammonia outlet is connected and communicated with a feed inlet of the decomposing furnace.
8. The high-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing a synthesis gas turbine to generate electricity according to claim 7, wherein the four-way valve (4) regulates the flow of ammonia at an ammonia outlet and the flow of ammonia at an ammonia outlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311835122.8A CN117823251A (en) | 2023-12-28 | 2023-12-28 | High-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing synthesis gas turbine to generate power |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311835122.8A CN117823251A (en) | 2023-12-28 | 2023-12-28 | High-energy-efficiency liquid ammonia hydrogen production hydrogenation system utilizing synthesis gas turbine to generate power |
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