Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the application aims to provide an electrolysis hydrogen production coupling gas turbine power generation system, which integrates a renewable energy power generation system, an electrolysis hydrogen production system and a gas turbine power generation system, effectively reduces the volatility of renewable energy, and provides stable and high-quality power input for a power grid; the hydrogen-doped gas turbine can effectively reduce carbon emission in the power generation process of the gas turbine, and can be transformed on the basis of the existing natural gas turbine, so that the cost is saved; the waste heat utilization system is arranged to utilize the waste heat of the dead steam generated after the combustion and the power generation of the gas turbine, so that the energy conversion efficiency of the system is improved, and the preparation cost of the electrolyzed water hydrogen production pure water is reduced.
For reaching above-mentioned purpose, the application proposes an electrolysis hydrogen production coupling gas turbine power generation system, utilize the system including electrolysis hydrogen production system, gas turbine power generation system and waste heat, gas turbine power generation system is used for supplying power to electrolysis hydrogen production system, electrolysis hydrogen production system through first pipeline to gas turbine power generation system supplies hydrogen, gas turbine power generation system through the second pipeline with waste heat utilization headtotail is used for letting in exhaust steam, waste heat utilization system through the third pipeline with electrolysis hydrogen production mechanism connects and is used for supplying water, still includes renewable energy power generation system, renewable energy power generation system with electrolysis hydrogen production headtotail.
Further, the waste heat utilization system includes regenerator, former water heat exchanger, membrane distillation subassembly and the product water heat exchanger that connects gradually through the pipeline, gas turbine power generation system passes through the second pipeline to the regenerator lets in the exhaust gas, the regenerator pass through the pipeline to former water heat exchanger lets in the low temperature flue gas, the external raw water that inserts of former water heat exchanger, the raw water with the low temperature flue gas is in heat transfer intensification in the regenerator, the raw water after the intensification passes through in the pipeline lets in the membrane distillation subassembly in the former water heat exchanger, the delivery port department of membrane distillation subassembly with the product water heat exchanger intercommunication is used for letting in the pure water.
Further, the gas turbine power generation system comprises a gas turbine, surplus power generation equipment and a gas compressor which are sequentially connected through pipelines, the gas turbine drives the power generation equipment to generate power, the power generation equipment is electrically connected with the electrolytic hydrogen production system to supply power, the power generation equipment passes through a second pipeline to the heat regenerator to be filled with exhaust gas, the gas compressor is communicated with the heat regenerator through a fourth pipeline to be filled with air, the air and the exhaust gas are subjected to heat exchange in the heat regenerator, and the air after being heated in the heat regenerator flows back to the inside of the gas turbine.
Further, the electrolytic hydrogen production system comprises an electrolytic cell, a gas-liquid separator, a gas cooler and a water mist drop catcher which are sequentially connected through pipelines, the power generation equipment is electrically connected with the electrolytic cell, and the water mist drop catcher is connected with the gas turbine through the first pipeline and used for introducing hydrogen.
Further, the electrolytic hydrogen production system further comprises a hydrogen storage tank, wherein the hydrogen storage tank is arranged on a pipeline between the water mist drop catcher and the gas turbine, and the hydrogen storage tank is connected with the gas turbine through the first pipeline.
Furthermore, the electrolytic hydrogen production system also comprises an electrolyte heat exchanger, and the electrolyte heat exchanger, the electrolytic bath and the gas-liquid separator are sequentially connected end to end through pipelines to form a circulation loop.
Furthermore, the electrolytic hydrogen production system also comprises a water supplementing system, the water supplementing system is connected with the electrolytic cell through a pipeline, and the water production heat exchanger is communicated with the water supplementing system through the third pipeline and is used for introducing pure water.
Further, the electrolytic cell further comprises a power grid system, and the power generation equipment and the electrolytic cell are respectively electrically connected with the power grid system.
Further, an inverter is further arranged at the input end of the power grid system.
Further, the electrolytic cell, the power generation equipment and the power grid system are respectively electrically connected with the renewable energy power generation system.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the application include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Fig. 1 is a schematic structural diagram of an electrolytic hydrogen production coupled gas turbine power generation system according to an embodiment of the present application.
Referring to fig. 1, an electrolysis hydrogen production coupling gas turbine power generation system includes electrolysis hydrogen production system, gas turbine power generation system and waste heat utilization system, gas turbine power generation system is used for supplying power to electrolysis hydrogen production system, electrolysis hydrogen production system through first pipeline 1 to gas turbine power generation system supplies hydrogen, gas turbine power generation system through second pipeline 2 with waste heat utilization system connects and is used for letting in exhaust steam, waste heat utilization system through third pipeline 3 with electrolysis hydrogen production mechanism connects and is used for supplying water, still includes renewable energy power generation system 4, renewable energy power generation system 4 with electrolysis hydrogen production system electricity is connected.
In the embodiment, the gas turbine power generation system and the renewable energy power generation system are respectively electrically connected with the electrolytic hydrogen production system, surplus electric quantity in the peak period of renewable energy power generation is consumed by the electrolytic water hydrogen production system, and when the generated energy of the renewable energy is not enough to supply power for consumption, the gas turbine power generation system burns hydrogen to generate electricity to supplement an electric quantity gap, so that stable operation of the electrolytic hydrogen production system is realized, and volatility of the renewable energy is effectively reduced.
Specifically, renewable energy sources include, but are not limited to, wind power generation, photovoltaic power generation, and the like. The renewable energy is utilized to electrolyze and produce hydrogen, zero carbon emission of hydrogen production can be realized, and the fuel source of the gas turbine power generation system can come from the hydrogen produced by the hydrogen electrolysis production system.
The waste heat utilization system comprises a heat regenerator 5, a raw water heat exchanger 6, a membrane distillation assembly 7 and a water production heat exchanger 8 which are sequentially connected through pipelines, a gas turbine power generation system passes through a second pipeline 2 to the heat regenerator 5 leads in exhaust gas, the heat regenerator 5 leads in low-temperature flue gas through a pipeline to the raw water heat exchanger 6, raw water is externally connected into the raw water heat exchanger 6, the raw water and the low-temperature flue gas are in heat exchange temperature rise in the heat regenerator 5, the raw water after temperature rise in the raw water heat exchanger 6 is led in the membrane distillation assembly 7 through the pipeline, a water outlet of the membrane distillation assembly 7 is communicated with the water production heat exchanger 8 to be used for leading in pure water. Specifically, exhaust gas is introduced into the heat regenerator 5, after heat exchange between the exhaust gas and the air is carried out in the heat regenerator 5, the air is heated and flows back to the gas turbine, low-temperature flue gas subjected to heat exchange by the heat regenerator 5 flows into the raw water heat exchanger 6, raw water enters the membrane distillation assembly 7 after being heated by the raw water heat exchanger 6, the raw water enters the water production side in the form of water vapor under the action of pressure difference between the two sides of the membrane distillation assembly 7, pure water is obtained after condensation on the water production side of the membrane distillation assembly 7 and enters the water production heat exchanger 8, and then the pure water enters the electrolytic cell through a water supplementing system to supplement water consumed in the electrolytic process of the electrolytic cell. The raw water heat exchanger 6 primarily heats the raw water by utilizing waste heat generated by the power generation equipment, so that the energy consumption is saved for the subsequent distillation process, the reliable operation of the membrane distillation assembly is ensured, the cyclic utilization of heat in the system is realized, and the overall energy consumption of the system is reduced.
The gas turbine power generation system comprises a gas turbine 9, a power generation device 10 and a gas compressor 11 which are sequentially connected through pipelines, the gas turbine 9 drives the power generation device 10 to generate electricity, the power generation device 10 is electrically connected with the electrolysis hydrogen production system to supply power, the power generation device 10 passes through a second pipeline 2 to the heat regenerator 5 is communicated with exhaust gas, the gas compressor 11 is communicated with the heat regenerator 5 through a fourth pipeline 12 to be communicated with air, the air and the exhaust gas exchange in the heat regenerator 5, and the air after being heated in the heat regenerator 5 flows back to the inside of the gas turbine 9. Specifically, the power generation equipment 10 may be a power generator, in this embodiment, exhaust steam generated after combustion power generation of the gas turbine 9 enters the heat regenerator 5 to preheat air compressed by the gas compressor 11, so as to increase the temperature of the air entering the combustion chamber of the gas turbine 9 and reduce fuel consumption, the gas turbine may be a hydrogen-doped natural gas turbine or a pure hydrogen gas turbine, and the hydrogen-doped gas turbine may be modified on the basis of an existing natural gas turbine, so as to save cost.
The electrolytic hydrogen production system comprises an electrolytic tank 13, a gas-liquid separator 14, a gas cooler 15 and a water mist droplet catcher 16 which are sequentially connected through pipelines, the power generation equipment 10 is electrically connected with the electrolytic tank 13, and the water mist droplet catcher 16 is connected with the gas turbine 9 through the first pipeline 1 and used for introducing hydrogen. The generator is electrically connected with the electrolytic cell through an electric wire to supply power, hydrogen produced by electrolysis of the electrolytic cell 13 is subjected to gas-liquid separation of the gas-liquid separator 14 and cooling of the gas cooler 15, and a part of the hydrogen is supplied to the gas turbine for combustion and a part of the hydrogen is stored for subsequent utilization after being filtered by the water mist drip catcher 16.
The electrolytic hydrogen production system further comprises a hydrogen storage tank 17, wherein the hydrogen storage tank 17 is arranged on a pipeline between the water mist drop catcher 16 and the gas turbine 9, and the hydrogen storage tank 17 is connected with the gas turbine 9 through the first pipeline 1. Because the generated energy of the renewable energy system fluctuates greatly, when the hydrogen yield is large, the hydrogen is stored in the hydrogen storage tank for caching, and then the hydrogen is supplied to the gas turbine through the hydrogen storage tank, so that the stability of the hydrogen supply of the gas turbine can be improved, and the waste of hydrogen energy is avoided.
The electrolytic hydrogen production system further comprises an electrolyte heat exchanger 18, and the electrolyte heat exchanger 18, the electrolytic bath 13 and the gas-liquid separator 14 are sequentially connected end to end through pipelines to form a circulation loop. The electrolyte separated by the gas-liquid separator is cooled by the electrolyte heat exchanger 18 and then flows back into the electrolytic cell for recycling, so that the recycling of the circulating water in the electrolytic hydrogen production system is realized.
The electrolytic hydrogen production system further comprises a water supplementing system 19, the water supplementing system 19 is connected with the electrolytic cell 13 through a pipeline, and the water production heat exchanger 8 is communicated with the water supplementing system 19 through the third pipeline 3 and used for introducing pure water. The pure water produced in the water-producing heat exchanger 8 is introduced into the water supplementing system 19 for storage, the water supplementing system 19 mainly supplies pure water to the electrolytic cell 13, so that the electrolytic water in the electrolytic cell can be continuously supplied, and specifically, the water supplementing system 19 can be a set of device which is composed of a pure water tank, a pure water pump and the like and is used for supplementing the electrolytic cell to consume the raw water.
The electrolytic hydrogen production coupling gas turbine power generation system further comprises a power grid system 20, and the power generation equipment 10 and the electrolytic bath 13 are respectively electrically connected with the power grid system 20. The grid system 20 may store the electric energy generated by the renewable energy power generation and the power generation equipment in a grid-connected manner, or reversely supply power to the electrolysis bath and the power generation equipment to maintain the normal operation of the system.
The input of the grid system 20 is also provided with an inverter 21. The power generation of renewable energy sources and power generation equipment can be ensured to be successfully connected to the Internet.
The electrolytic cell 13, the power generation device 10, and the grid system 20 are electrically connected to the renewable energy power generation system 4, respectively. The system mainly uses renewable energy sources for power generation to supply power to the electrolytic cell and power generation equipment, and the power grid system is used as a standby power supply and can be used for consuming electric energy generated by the renewable energy sources.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.