RU2759794C1 - Energy-technology complex for heat and electric energy generation and method for operation of the complex - Google Patents

Abstract

FIELD: power industry.

SUBSTANCE: invention relates to energy, namely to environmentally friendly and cost-effective methods and installations for generating thermal and electrical energy. The energy technology complex for generating thermal and electrical energy contains a power plant (1), a cryogenic air separation plant (2) connected to the power plant (1) by a liquid oxygen supply line and a liquid nitrogen supply line, a fuel source (3). Additionally, it contains a combined-cycle gas plant (4) (CCGT), made with the possibility of generating thermal and electrical energy, an electrolyzer (5) and an installation (6) connected to it for generating electricity from renewable energy sources (RES), while the electrolyzer (5) is made with the ability to produce oxygen and hydrogen from water coming from the power plant (1), the electrolyzer (5) is connected by an oxygen supply line (8) to the power plant (1) and by a hydrogen supply line (9) with the CCGT (4), which is also made with the possibility of transferring the generated energy to the cryogenic air separation plant (2) and the electrolyzer (5). The method for operation of the energy technology complex is also disclosed.

EFFECT: increasing the energy efficiency of the complex by increasing the use of thermal energy of the media circulating in the complex, as well as improving the environmental performance of the complex through the use of renewable energy sources (RES) for water electrolysis, and further production of combustible gas, hydrogen, for energy and oxygen generation, for burning carbon-containing fuels.

10 cl, 1 dwg

Description

The invention relates to energy, namely to environmentally friendly and economically viable methods and installations for the generation of thermal and electrical energy.

There is a known method and installation for the generation of mechanical and thermal energy (RF patent No. 2651918, publ. 04.24.2018), which includes the stages at which: (a) hot gases from the combustion chamber are directed to the input the combustion chamber is at least 7.5 MPa; (b) the exhaust gases in the steam-gas turbine at a pressure of 0.2-0.9 MPa enter the heat and water recovery unit, where they are cooled to the temperature required to separate water from the exhaust gases (exhaust gas) by condensation, then the condensed water is removed from the heat and water recovery unit; (c) exhaust gas from the heat and water recovery unit, containing carbon dioxide as the main constituent, is directed to the inlet of the carbon dioxide compressor, which compresses the gas to a pressure of at least 3.5 MPa; (d) the compressed exhaust gas is fed to the heat and carbon dioxide recovery unit, where it is cooled to a temperature required for the condensation of carbon dioxide, then the condensed carbon dioxide is removed from the heat and carbon dioxide recovery unit; (f) some of the drained water from the heat and water recovery unit is fed to the inlet of the water pump-regulator, which pumps it into the combustion chamber; (f) some of the carbon dioxide condensed in the heat recovery unit and carbon dioxide is supplied to the inlet of the carbon dioxide regulator pump, which pumps it into the combustion chamber; (g) carbonaceous fuel and oxygen are supplied to the combustion chamber by the fuel pump-regulator and oxygen pump-regulator, respectively, at the pressure necessary to effect the supply of the required amount to the combustion chamber.

There is a known control method and installation for the generation of mechanical and thermal energy (RF patent No. 2698865, publ. 08/30/2019), configured to liquefy natural gas and including the determination of the electromagnetic moment at the anchor of the generator connected to a steam-gas turbine; assessment of the current operating mode of the installation for the generation of mechanical and thermal energy based on the electromagnetic moment at the generator armature, while when the electromagnetic moment decreases below the first threshold value, the productivity of the liquefaction unit is increased, in which the liquefied carbonaceous fuel enters a thermally insulated tank for storing the liquefied carbonaceous fuel, and additional liquid oxygen enters a thermally insulated container for storing liquefied oxygen, and with an increase in the electromagnetic moment at the generator armature above the second threshold value, the performance of the liquefaction unit is reduced, and including the stages at which: (a) hot gases from the combustion chamber are directed to the inlet to a steam-gas turbine; (b) the exhaust gas from the turbine enters the first exhaust gas cooler; (c) the exhaust gas from the first cooler is fed to the first contact cooler, where they are cooled to a temperature required to separate water from the exhaust gas by condensation, then the condensed water is removed from the first contact cooler; (d) The exhaust gas from the first contact cooler, containing carbon dioxide as the main constituent, is directed to the compressor inlet; (e) the exhaust gases compressed by the compressor are fed to a second contact cooler where they are cooled; (f) from the second contact cooler, cooled exhaust gas flows into the second cooler, where exhaust gas is cooled to a temperature required for condensation of carbon dioxide, then the condensed carbon dioxide is removed from the second cooler; (g) some of the water discharged from the first contact cooler enters the inlet of the water pump regulator, which pumps it into the combustion chamber; (h) some of the carbon dioxide condensed in the second cooler enters the inlet of the carbon dioxide regulator pump, which pumps it into the combustion chamber; (i) carbonaceous fuel and oxygen are supplied to the combustion chamber by the fuel regulator pump and oxygen pump-regulator, respectively, at the pressure necessary to effect the supply to the combustion chamber, while the carbonaceous fuel is supplied from a thermally insulated carbonaceous fuel storage tank.

The disadvantages of the presented analogs include power losses and low efficiency of a combined cycle plant for liquefying natural gas and producing liquid oxygen.

Known energy technological complex for processing natural gas and the method of operation of the complex, selected as the closest analogue (RF patent No. 2739165 from 21.12.2020). The energy technological complex for natural gas processing contains a natural gas source, a cryogenic air separation unit, a liquefied natural gas plant (LNG plant), a gas processing unit and a power plant, and the cryogenic air separation unit is connected to the LNG plant by a liquid nitrogen supply line and the power plant by a liquid oxygen supply line, the natural gas source is connected to the gas processing unit and to the LNG plant, which in turn is connected to the gas processing unit by the boil-off gas supply line and to the combustion chamber of the power plant by the liquefied natural gas supply line, the power plant includes itself a water supply line to the combustion chamber and is configured to provide steam from the water supply line, as well as carbon dioxide condensed in the power plant to the gas processing unit, which is configured to produce liquid hydrocarbons and a methane-hydrogen mixture, and the power plant is configured to transfer the generated energy to the gas processing unit, the LNG plant and to the cryogenic air separation unit. The method of operation of the energy technological complex for natural gas processing consists in the fact that steam from the water supply line to the combustion chamber and carbon dioxide condensed in the power plant are supplied to the gas processing unit; in addition, natural gas is supplied to the gas processing unit from a natural gas source and stripped gas from a liquefied natural gas plant (LNG plant), at the outlet of the gas processing unit, liquid hydrocarbons and a methane-hydrogen mixture are obtained during chemical reactions in the unit, while natural gas is also supplied to the LNG plant from the source natural gas and liquid nitrogen from the cryogenic air separation unit, at least part of the liquid oxygen from the cryogenic air separation unit and at least part of the liquefied natural gas from the LNG plant are fed into the combustion chamber of the power plant, from which the generated energy is supplied to the gas processing unit , LNG plant and cryogenic separation unit in air.

The disadvantages of the given closest analogue can be attributed to the relatively low energy efficiency of the complex and the low use of thermal energy of the environments, which causes low efficiency and deterioration of the environmental performance of the installation.

The problem to be solved by the invention is to eliminate these disadvantages.

The technical result consists in increasing the energy efficiency of the complex, by increasing the use of thermal energy of the media circulating in the complex, as well as in improving the environmental performance of the complex, through the use of renewable energy sources (RES) for water electrolysis, and further production of combustible gas - hydrogen, for energy and oxygen generation, for combustion of carbonaceous fuels.

The technical result is achieved by an energy technological complex for the generation of thermal and electrical energy, containing a power plant (1), a cryogenic air separation unit (2) connected to a power plant (1) with a liquid oxygen supply line and a liquid nitrogen supply line, a fuel source (3), at this additionally contains a steam-gas installation (4) (CCGT), made with the possibility of generating thermal and electrical energy, an electrolyzer (5) and a unit (6) connected to it for generating electricity from renewable energy sources (RES), while the electrolyzer (5) , is configured to generate oxygen and hydrogen from water supplied from the power plant (1), the electrolyzer (5) is connected with the oxygen supply line (8) to the power plant (1) and the hydrogen supply line (9) is connected to the CCGT unit (4), which is also configured to transfer the generated energy to the cryogenic air separation unit (2) and the electrolyzer (5).

The energy transferred from the CCGT unit (4) to the electrolyzer (5) is thermal energy, and to the cryogenic air separation unit (2) - electrical and / or mechanical energy.

The CCGT unit (4) is additionally made with the possibility of transferring at least part of the thermal energy to the power plant (1).

The cryogenic air separation unit (2) is additionally connected to the power plant (1) by a transmission line for the energy generated by the power plant (1); in addition, the CCGT unit (4) is additionally configured to transmit the generated electrical and / or mechanical energy to the power plant (1).

The electrolyzer (5) is configured to supply oxygen to the power plant (1) and hydrogen to the CCGT unit (4) under a pressure greater than or equal to the pressure in the fuel supply line before entering the combustion chamber of the power plant (1), and the complex is also made with the possibility of ensuring the transfer of liquefied oxygen from the unit (2) for cryogenic separation of air, as well as water and liquefied carbon dioxide from the power plant (1) and the energy generated in it (1), to an external consumer (7).

Also, the technical result is achieved by the method of operation of the energy technological complex, which consists in the fact that the electric energy generated by the installation (6) for generating electricity from renewable energy sources (RES) is supplied to the electrolyzer (5), where the water supplied from the power plant (1) is decomposed. , for hydrogen and oxygen, the oxygen obtained in this way is fed through the oxygen supply line (8) to the power plant (1), where it is sent to the combustion chamber of the power plant (1), and the hydrogen obtained through the hydrogen supply line (9) is fed to the steam-gas installation (4) (CCGT), where, due to the combustion of this hydrogen, thermal and electrical energy is generated, while at least one of the types of energy generated by CCGT (4) is supplied to the electrolyzer (5), and to the cryogenic air separation unit (2) electrical and / or mechanical energy is supplied from the CCGT unit (4), at least liquid nitrogen and oxygen are obtained in the cryogenic air separation unit (2) od, which are fed to the power plant (1) through the lines for supplying liquid oxygen and supplying liquid nitrogen.

The CCGT unit (4) transfers thermal energy to the electrolyzer (5), and electrical and / or mechanical energy to the cryogenic air separation unit (2).

Additionally, from the CCGT (4) at least part of the thermal energy is transferred to the power plant (1).

In addition to the cryogenic air separation unit (2), the energy generated by the power plant (1) is supplied, and from the CCGT unit (4) the electrical and / or mechanical energy generated by it is supplied to the power plant (1).

Oxygen into the power plant (1) and hydrogen in the CCGT unit (4) from the electrolyzer (5) are supplied under a pressure greater than or equal to the pressure in the fuel supply line before entering the combustion chamber of the power plant (1), and also obtained in the unit (2 ) cryogenic separation of air, liquefied oxygen is supplied to an external consumer (7), as well as from the power plant (1) water, generated in it (1) energies and liquefied carbon dioxide are supplied to an external consumer (7).

The presented figure shows a diagram of an energy-technological complex for the generation of heat and electric energy.

In the figure shown, the following elements are indicated.

1 - power plant without exhaust;

2 - cryogenic air separation unit;

3 - fuel source;

4 - a steam-gas plant operating on hydrogen;

5 - electrolyzer;

6 - installation for generating electricity from renewable energy sources (RES);

7 - external consumer;

8 - oxygen supply line from the electrolyzer (5) to the power plant (1);

9 - hydrogen supply line from the electrolyzer (5) to the combined cycle plant (4).

The arrows show the directions of movement of the media in the complex and the energies to ensure the operability of the complex.

The energy technological complex for the generation of thermal and electrical energy contains a source (3) of fuel, which can be a source of carbon-containing fuel, for example, methane, a power plant (1), a cryogenic air separation unit (2) connected to the power plant (1) by a liquid oxygen supply line and line of supply of liquid nitrogen, which increases the energy efficiency of the complex, by increasing the use of thermal energy of liquid oxygen and liquid nitrogen circulating in the complex, namely the cold of liquid nitrogen and oxygen in the power plant (1), in particular for cooling the exhaust gases of the power plant (1 ) in order to condense water and carbon dioxide.

The complex additionally contains a steam-gas unit (4) (CCGT), made with the possibility of generating thermal and electrical / mechanical energy due to the combustion of hydrogen and air, which makes it possible to reduce emissions of harmful substances into the atmosphere during the operation of the complex.

The electrolyzer (5) is connected to the installation (6) for generating electricity from renewable energy sources (RES), while the electrolyzer (5) is configured to generate oxygen and hydrogen from water supplied from the power plant (1), which improves energy efficiency complex and improve the environmental performance of the complex, through the use of renewable energy sources (RES) for water electrolysis.

The electrolyzer (5) is connected by the oxygen supply line (8) to the power plant (1) and the hydrogen supply line (9) to the CCGT unit (4), which is also configured to transfer the generated energy to the cryogenic air separation unit (2) and the electrolyzer (5 ), which makes it possible to increase the energy efficiency of the complex through the use of relatively cheaper oxygen and hydrogen in the complex, as well as to improve the environmental performance of the complex, through the use of renewable energy sources (RES) for water electrolysis, and further production of combustible gas - hydrogen, for power generation.

The power plant (1) additionally includes a closed loop of heat recovery, operating according to the ORC, made with the possibility of obtaining heat with a low-boiling working fluid from the exhaust gases and generating additional mechanical energy from the expansion of the low-boiling working fluid on the ORC turbine and then generating additional electrical energy by the ORC generator connected with an ORC turbine, which increases the efficiency of the complex by increasing the use of thermal energy of the media circulating in the complex, which corresponds to the installation described in patent RU 2739165 dated 12.21. In addition, cold water, condensed from the exhaust gases of the power plant (1) due to stage cooling, is directed to the electrolyzer (5).

The energy transferred from the CCGT unit (4) to the electrolyzer (5) is heat energy, including from the water vapor contained in the exhaust gases of the CCGT unit (4), due to this heat, the water entering the electrolyzer (5) from the power plant ( 1), to the operating temperature of the electrolyzer (5), which reduces the consumption of electricity from renewable energy sources and additionally makes it possible to increase the energy efficiency of the complex by reducing energy costs.

The CCGT unit (4) is additionally made with the possibility of transferring at least part of the thermal energy of the exhaust gases containing water vapor to the power plant (1), where, mixed with the exhaust gases of the power plant (1), they will also transfer heat to a closed heat recovery loop operating according to the ORC , which additionally allows increasing the energy efficiency of the complex by increasing the use of heat, as well as improving environmental performance due to the condensation of carbon dioxide.

The cryogenic air separation unit (2) is additionally connected to the power plant (1) by a transmission line for the energy generated by the power plant (1), which can be electrical and / or mechanical, for example, mechanical energy can be used to drive at least some of the compressors, and for the other part - electrical, or one type of energy for all equipment of the cryogenic air separation plant (2). In addition, the CCGT unit (4) is additionally configured to transfer the generated energy to the power plant (1), which can also be electrical and / or mechanical, for example, to drive at least one feed water pump, mechanical energy can be used, and to drive of at least one other pump - electric, or only one of the indicated energies, which additionally makes it possible to increase the energy efficiency of the complex by increasing the use of energies in the complex.

The electrolyzer (5) is configured to supply oxygen to the power plant (1) and hydrogen to the CCGT unit (4) under a pressure greater than or equal to the pressure in the fuel supply line before entering the combustion chamber of the power plant (1), for example, due to the work of the electrolyzer itself (5) under high pressure, the required oxygen pressure can be achieved to supply the combustion chamber of the power plant (1), which additionally makes it possible to increase the energy efficiency of the complex, due to the absence of the need to increase the pressure of oxygen and hydrogen, or turn on one additional compressor to increase the pressure oxygen for supplying it to the combustion chamber of the power plant (1) under the required pressure, as well as another additional compressor that supplies hydrogen to the combustion chamber of the CCGT unit (4) (A.I. Schastlivtsev, Nazarova O.V. / Hydrogen-air gas turbine system energy storage. // HEAT POWER, 2016, No. 2, pp. 31-37). The design of the high-pressure electrolyzer itself can be any of the known ones, for example, disclosed in the article “S.P. Korolev, V.N. Kuleshov et al. / High pressure electrolyzer with wick water supply for work in zero gravity // Izvestiya RAN. Energy, 2019, No. 2, pp. 68-77 [URL: https://sciencejournals.ru/view-article/?j=izen&y=2019&v=0&n=2&a=IzEn1902009Korolev] "or in accordance with RF patent 2496918, published 10/27/2013, a high-pressure electrolyzer is designed to produce hydrogen and oxygen under high pressure (7 MPa or more).

The complex is also designed to ensure the transfer of liquefied oxygen from the unit (2) for cryogenic separation of air, as well as water and liquefied carbon dioxide obtained by staged cooling of exhaust gases, from the power plant (1) and the energies generated in it (1) to the external to the consumer (7), which additionally makes it possible to increase the efficiency of the complex due to the economically feasible increase in the use of surplus media generated during the operation of the complex.

The complex works as follows.

Electric energy is obtained from the installation (6) for generating electricity from renewable energy sources (RES), a renewable energy source for which can be solar energy, wind energy, geothermal energy or their combinations, and then fed to the electrolyzer (5), where water is decomposed, which is supplied from the power plant (1), to hydrogen and oxygen, which makes it possible to increase the energy efficiency of the complex, as well as to improve the environmental performance of the complex, through the use of renewable energy sources (RES) for electrolysis of water, and further production of combustible gas - hydrogen, to generate energy in a CCGT unit (4) and oxygen for burning carbon-containing fuel in a power plant (1).

The oxygen obtained in this way is fed through the oxygen supply line (8) to the power plant (1), where it is sent to the combustion chamber of the power plant (1), and the resulting hydrogen is fed through the hydrogen supply line (9) to the combined cycle plant (4) (CCGT ), where, due to the combustion of this hydrogen with air from the atmosphere, thermal and electrical energy is generated, while at least one of the types of energy generated by the CCGT unit (4) is supplied to the electrolyzer (5), and to the unit (2) for cryogenic air separation from the CCGT unit (4) supply electrical / mechanical energy, which makes it possible to increase the energy efficiency of the complex through the use of relatively cheaper oxygen and hydrogen in the complex, as well as to improve the environmental performance of the complex, through the use of renewable energy sources (RES) for water electrolysis, and further production of combustible gas - hydrogen, for generating energy in a CCGT unit (4) and oxygen, for burning carbon-containing fuel in a power generating unit installation (1).

In the unit (2) for cryogenic air separation, at least liquid nitrogen and oxygen are obtained, which are fed to the power plant (1) through the lines for supplying liquid oxygen and supplying liquid nitrogen, which makes it possible to increase the energy efficiency of the complex by increasing the use of thermal energy of the media, and namely the cold of liquid nitrogen and oxygen in the power plant (1), in particular for cooling the exhaust gases of the power plant (1) in order to condense water and carbon dioxide.

Thermal energy is transferred from the CCGT unit (4) to the electrolyzer (5), for example, with waste gas containing water vapor, to heat the water coming from the power plant (1) to the operating temperature of the electrolyzer (5), which reduces the consumption of electricity from RES and additionally allows to increase the energy efficiency of the complex by reducing energy consumption.

Additionally, at least part of the thermal energy of exhaust gases is transferred from the CCGT unit (4) to the power plant (1), while at least part of the heat is transferred to a closed loop of heat recovery, operating according to the ORC, and further heat treatment, which makes it possible to further increase the energy efficiency of the complex , by increasing the use of thermal energy of the media circulating in the complex, as well as in improving the environmental indicators of the complex, due to the heat obtained from the combustion of hydrogen generated by the energy of renewable energy sources in the air, and oxygen for the power plant (1), obtained without the cost of carbon-containing fuel ...

In addition to the cryogenic air separation unit (2), the energy generated by the power plant (1), namely mechanical and / or electrical energy, is supplied, while some of the compressors of the unit (2) are driven by the use of electrical energy and the other part - mechanical energy, or only one of these types of energy, while the CCGT unit (4) additionally supplies the mechanical and / or electrical energy generated by it to the power plant (1), also, for example, to drive at least part of the circulation pumps of the unit (1) with electrical energy, and the other part of the circulation pumps - mechanical energy, or only one of the types of energy, which makes it possible to further increase the energy efficiency of the complex by increasing the use of the energies generated by the complex.

Also, hydrogen to the CCGT unit (4) and oxygen to the power plant (1) from the electrolyzer (5) are supplied under a pressure greater than or equal to the pressure in the fuel supply line before entering the combustion chamber of the power plant (1), and also obtained in the unit ( 2) cryogenic separation of air, liquefied oxygen is supplied to an external consumer (7), while, as mentioned earlier, high-pressure electrolyzers (5) are known, capable of providing the pressure of the generated gases necessary for their supply to the combustion chambers of the power plant (1) and CCGT ( 4) without the use of additional compressors, which makes it possible to increase the efficiency of the complex as a whole due to such energy savings on the supply of hydrogen and oxygen from the electrolyzer (5). However, this does not limit the use of electrolysers (5) only with such a pressure, at a lower pressure it is possible to use at least one compressor to increase the oxygen pressure, while the compressor will also receive electrical energy from RES (6), which makes it possible to increase the efficiency of the complex, by reducing the use of energy to increase the oxygen pressure. Also, from the power plant (1), water and liquefied carbon dioxide, obtained by staged cooling of exhaust gases in the power plant (1), are supplied to an external consumer (7), which additionally makes it possible to increase the efficiency of the complex due to an economically expedient increase in the use of surplus media generated during the operation of the complex.

It is necessary to spend 0.8 kWh / kg to obtain liquid oxygen by cryogenic separation of air [https: //cryogenmash.ra/catalog/kriogennye-vru/].

And to obtain 1 kg of hydrogen using an electrolyzer, 50 kWh is required [https://ru.qaz.wiki/wiki/Electrolysis_of_water].

In this case, the mass of hydrogen in a water molecule is 2⋅100 / 18 = 11.11%, and the mass of oxygen is 16⋅100 / 18 = 88.89% [https://www.drive2.ru/b/2451114/], whence 50 kWh / 88.89⋅11.11 = 6.25 kWh / kg O ₂ . And so, to obtain 1 kg of oxygen in an electrolyzer, 6.25 kWh of energy is required.

In this case, another 0.1111 / 0.8889 = 125 grams of hydrogen is obtained, which, when burned, will give 0.125 - 33.3 kWh (according to the lowest) = 4.2 kWh or 0.125 - 39.2 kWh (according to highest) = 4.9 kWh. If we assume that this energy in a CCGT unit with an efficiency of 50% will turn into electricity and 40% in the form of steam will enter the electrolyzer, which will reduce the need for electricity, then we will assume that 0.9 4.9 kWh = 4.1 kW⋅ we will refund the electrolyzer.

Those. to generate 1 kg of oxygen in the electrolyzer, 6.25 kWh-4.1 kWh = 1.84 kWh from VEI is required.

Thus, the technical result is achieved, which consists in increasing the energy efficiency of the complex, by increasing the use of thermal energy of the media circulating in the complex, as well as in improving the environmental indicators of the complex, due to the use of renewable energy sources (RES) for water electrolysis, and further production of fuel gas - hydrogen, for the generation of energy and oxygen, for the combustion of carbonaceous fuels.

Claims (10)

1. An energy technology complex for the generation of thermal and electrical energy, containing a power plant (1), a cryogenic air separation unit (2) connected to the power plant (1) by a liquid oxygen supply line and a liquid nitrogen supply line, a fuel source (3), which is characterized by , which additionally contains a combined cycle plant (4) (CCGT), made with the possibility of generating thermal and electrical energy, an electrolyzer (5) and a unit (6) connected to it for generating electricity from renewable energy sources (RES), while the electrolyzer (5 ) is configured to generate oxygen and hydrogen from water supplied from the power plant (1), the electrolyzer (5) is connected with the oxygen supply line (8) to the power plant (1) and the hydrogen supply line (9) is connected to the CCGT unit (4), which is also configured to transfer the generated energy to the cryogenic air separation unit (2) and the electrolyzer (5). 2. Power engineering complex according to claim 1, characterized in that the energy transmitted from the CCGT unit (4) to the electrolyzer (5) is thermal energy, and to the cryogenic air separation unit (2) - electrical and / or mechanical energy. 3. Power engineering complex according to claim 2, characterized in that the CCGT unit (4) is additionally configured to transfer at least part of the thermal energy to the power plant (1). 4. Power engineering complex according to claim 3, characterized in that the cryogenic air separation unit (2) is additionally connected to the power plant (1) by a transmission line of the energy generated by the power plant (1), in addition, the CCGT unit (4) is additionally made with the possibility of generated electrical and / or mechanical energy power plant (1). 5. Energy technology complex according to any of the previous paragraphs, characterized in that the electrolyzer (5) is configured to supply oxygen to the power plant (1) and hydrogen to the CCGT unit (4) under a pressure greater than or equal to the pressure in the fuel supply line before entering the combustion chamber of the power plant (1), as well as the complex is designed to ensure the transfer of liquefied oxygen from the cryogenic air separation unit (2), as well as water and liquefied carbon dioxide from the power plant (1) and the energies generated in it (1) to external to the consumer (7). 6. The method of operation of the energy technological complex, which consists in the fact that the electric energy generated by the installation (6) for generating electricity from renewable energy sources (RES) is supplied to the electrolyzer (5), where the water supplied from the power plant (1) is decomposed into hydrogen and oxygen, the oxygen obtained in this way is fed through the oxygen supply line (8) to the power plant (1), where it is sent to the combustion chamber of the power plant (1), and the hydrogen obtained through the hydrogen supply line (9) is fed to the combined-cycle plant ( 4) (CCGT), where, due to the combustion of this hydrogen, thermal and electrical energy is generated, while at least one of the types of energy generated by the CCGT (4) energy is supplied to the electrolyzer (5), and to the cryogenic air separation unit (2) from the CCGT (4) electric and / or mechanical energy is supplied, in the cryogenic air separation unit (2) at least liquid nitrogen and oxygen are obtained, which and the supply of liquid nitrogen are fed to the power plant (1). 7. The method according to claim 6, characterized in that heat energy is transferred from the CCGT unit (4) to the electrolyzer (5), and electrical and / or mechanical energy to the cryogenic air separation unit (2). 8. A method according to claim 7, characterized in that, in addition, at least part of the thermal energy is transferred from the CCGT unit (4) to the power plant (1). 9. The method according to claim 8, characterized in that, in addition to the cryogenic air separation unit (2), the energy generated by the power plant (1) is supplied, and the electrical and / or mechanical energy generated by it is supplied from the CCGT unit (4) to the power plant ( 1). 10. A method according to any of the preceding claims, characterized in that oxygen in the power plant (1) and hydrogen in the CCGT unit (4) from the electrolyzer (5) is supplied under a pressure greater than or equal to the pressure in the fuel supply line before entering the combustion chamber of the power plant. unit (1), as well as the liquefied oxygen obtained in the cryogenic air separation unit (2) is supplied to an external consumer (7), and also from the power plant (1) water and liquefied carbon dioxide are supplied to an external consumer (7).

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