System for the optimization of energy and the environment, assembly including this system, and use of this system and assembly

Abstract

The present invention relates to a system for energy and environmental optimization of a facility including at least one combustion device (1) with a burner (3). The system comprises an electrolyzer (2) and an injection system (4) connected to at least one fuel (3a) and / or oxidant (3b) inlet of the burner (3). The injection system can inject gases from the electrolyzer (2) and / or mixtures of these gases with combustible and / or oxidizing fluids at such inlets. The electrolyzer (2) and / or the injection system (4) are controlled based on at least one piece of information originating from the combustion device (1) and / or sensors (6x) of the facility. The electrolyzer can be equipped with a heat exchanger (2a) for cooling the facility and / or for preheating water (EP) intended to be subsequently heated (EC) by the combustion device (1).

Description

Technical Field

[0001] The present invention , E relates to a system for the optimization of energy and the environment , an assembly including this system, and the use of this system and the assembly .

Background Art

[0002] It is generally known that it is desirable to improve the energy efficiency and lifespan of equipment equipped with burners (such as boilers and furnaces), particularly for individual or collective housing or corporate equipment.

[0003] In particular, combustion devices are limited in efficiency because they mainly use air, in which only a very small part is molecular oxygen and the rest is mainly nitrogen, as the oxidant.

[0004] Furthermore, there is a desire to significantly reduce the emissions of greenhouse gases such as CO2, CO, nitrogen oxides (NOx) and other pollutants, as well as pollutants and toxic substances generated by this existing equipment that consumes air as an oxidant.

[0005] There is also a desire to reduce the dependence on and consumption of fossil fuels used in the operation of this device.

[0006] The energy consumed in buildings is indeed a major cause of CO2 emissions, and improving the efficiency of combustion devices has been identified as a means that is likely to have a significant impact on greenhouse gas emissions.

[0007] Another important way to combat pollution emissions is to use renewable energy such as solar energy and wind energy, particularly in the form of electricity.

[0008] Their use, particularly in the home, is currently limited in that the generation of electrical energy they allow often does not coincide with the consumption demand.

[0009] One of the solutions that is now beginning to be implemented is "Power-to-Gas". The electricity, which is mainly obtained from these renewable energies, is converted into hydrogen by the electrolysis of water. These energies thus converted can be stored and transported by current networks such as the urban gas network.

[0010] However, the "Power-to-Gas" solution is not yet widely deployed today. In particular, current urban underground networks such as the urban gas network are not always adapted to transport, in compressed form, especially hydrogen, whether or not it is combined with urban gas.

[0011] Furthermore, combustion devices not connected to the urban gas network cannot benefit from these "Power-to-Gas" solutions. Instead, these combustion devices are connected to the electricity network and, in some cases, to local power generation facilities.

[0012] Furthermore, hydrogen production by electrolysis is accompanied by oxygen production that is not recovered. This represents a significant loss of a considerable portion of the gas generated during the electrolysis operation.

[0013] Finally, a significant portion of the electrical energy used in electrolysis is lost in the form of waste heat generation (Joule effect) and is not recovered, thus limiting the overall efficiency of this operation.

[0014] Therefore, there is generally a need for a solution that can recover the oxygen and heat generated during electrolysis without transporting them through the urban gas network and enable the local use of hydrogen and / or oxygen production and storage. This solution enables the energy and environmental optimization of facilities equipped with combustion devices with burners. SUMMARY OF THE INVENTION

[0015] A general object of the present invention is to overcome the drawbacks of the prior art.

[0016] For this purpose, the present invention proposes to hybridize all types of combustion devices including at least one burner, especially combustion devices for individuals or apartment buildings or companies, whether or not connected to the urban gas network, with a local electrolyzer located near these combustion devices. Advantageously, the present invention makes it possible to generate decarbonized heat in a combustion device that initially uses carbon-based fossil fuels, using a renewable or non-renewable power source.

[0017] These local electrolyzers are connected to the fuel inlet and / or the oxidizer inlet of these combustion devices.

[0018] They make it possible to inject locally generated hydrogen and / or oxygen, individually or in a mixed form, in order to neutralize all or part of the generation of polluting and toxic gases such as NOx, CO2, CO.

[0019] Thanks to this injection of hydrogen and / or oxygen, the combustion and the efficiency of the combustion device being carried out are clearly improved, especially due to the calorific value and the energy contribution of these gases supplied by the electrolyzer. Furthermore, the combustion is cleaner and there is less fouling (such as particle generation), so the durability of the combustion device is increased and maintenance is limited.

[0020] Furthermore, these electrolyzers reduce the cost of the initial fossil fuels, which continues to increase due to the tension in the world market for energy resources.

[0021] The distribution of the hydrogen and / or oxygen injection to the combustion device is controlled by an electronic module arranged in the installation, which can be connected to the combustion device, the hydrogen and / or oxygen generation device, and the sensors.

[0022] The latter may further include a communication unit that exchanges with a remote server and transmits various operating parameters of the installation periodically or upon request.

[0023] Therefore, this server utilizes the operating behaviors of a large number of facilities that make up the combustion device.

[0024] Furthermore, this remote server can communicate with the local control module to send information for changing the gas injection distribution programming.

[0025] Furthermore, and advantageously, in order to improve the efficiency of the facilities, the thermal energy itself released by the electrolyzer during the production of hydrogen and / or oxygen is used to preheat the water circulating within the combustion device by means of a heat exchanger (recovery of heat lost by cogeneration).

[0026] This thermal energy can also be used for supply to a secondary circuit (such as a water heater for domestic hot water).

[0027] The surplus hydrogen molecules themselves can be locally stored and later used asynchronously to supply the combustion device of the facilities, or can be converted into electrical energy on-site using a fuel cell.

[0028] The electrolyzer can also be powered by a renewable energy source such as sunlight (solar power panels), wind power, hydropower, or any "green" generator.

[0029] In particular, this renewable energy source can be used to produce hydrogen and / or oxygen when the combustion device is not operating. Next, the hydrogen and / or oxygen thus produced is stored.

[0030] Generally, such a local system enables a very high overall efficiency by recovering the production of hydrogen, the production and recovery of oxygen, and the thermal energy generated during the electrolysis reaction.

[0031] Furthermore, gas transportation and energy losses due to the Joule effect are avoided.

[0032] Accordingly, according to one aspect, the present invention is a system for energy and environmental optimization of a facility including at least one combustion device including at least one burner, at least one device for generating hydrogen and / or oxygen by electrolysis of water, at least one injection system connected to at least one fuel inlet and / or oxidant inlet of the combustion device, the injection system being capable of injecting a gas coming from the device for generating hydrogen and / or oxygen by electrolysis of water, and / or a mixture of these gases, as well as a fuel fluid and / or an oxidant fluid, at such an inlet, a local electronic module connected to a device for generating hydrogen and / or oxygen by electrolysis of water, the combustion device, and / or sensors installed in the facility, the module being configured to control the generating device and / or the injection system as a function of at least one piece of information coming from the sensors of the combustion device and / or the facility.

[0033] According to yet another aspect, a system is proposed in which the device for generating hydrogen and / or oxygen by electrolysis of water comprises a heat exchanger for cooling the device and / or preheating water intended to be subsequently heated by the combustion device.

[0034] Advantageously, the injection system includes fluid components for controlling the injection of hydrogen gas and / or oxygen gas into the fuel inlet of the burner of the combustion device and / or the oxidant inlet of the burner of the combustion device according to different modes.

[0035] In particular, the electronic module is configured to control different injection modes in order to enable the injection of all or part of the hydrogen gas and / or oxygen gas into the fuel inlet of the burner of the combustion device and / or the injection of all or part of the hydrogen gas and / or oxygen gas into the oxidant inlet of the burner of the combustion device.

[0036] Furthermore, according to an alternative embodiment, the injection system is configured such that the mixing of hydrogen gas and / or oxygen gas with the fuel fluid or the oxidant fluid is carried out within the system before being injected into at least one fuel inlet and / or oxidant inlet of the combustion device.

[0037] Also, the electronic module can include at least one electrical communication module that enables the transmission of data from the combustion device, and / or a device for generating hydrogen and / or oxygen, and / or sensors of the facility, to a remote server.

[0038] Furthermore, the system can comprise a remote server that stores and processes the operation data received from one or more electronic modules to generate, for example, maintenance information.

[0039] In a possible alternative embodiment, the device for generating hydrogen and / or oxygen by electrolysis of water is coupled to a renewable energy power source.

[0040] Alternatively or additionally, the system can also comprise a local storage system capable of storing all or part of the surplus hydrogen and / or oxygen generated by the water electrolysis generation device, and the electronic module can control the injection system in a manner asynchronous with the generation of hydrogen and / or oxygen to subsequently supply the hydrogen and / or oxygen thus stored to the combustion device.

[0041] The system can further include a fuel cell that receives the hydrogen stored in the storage system as an input and converts the hydrogen into electrical energy.

[0042] The following description is purely illustrative and non-limiting. The description should be read in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0043]

Figure 1

Figure 2

Figure 3

DETAILED DESCRIPTION OF THE INVENTION

[0044] The facility shown in FIG. 1 includes a combustion device 1 and an electrolyzer 2.

[0045] The device 1 has a burner 3 and can be of any type (such as a boiler, oven, etc.). The facility of which this device forms part can include a building BAT such as a single-family house. Alternatively, the facility can be provided for an apartment building or a company building.

[0046] In the example of FIG. 1, the combustion device 1 is an individual boiler that uses a liquid or gaseous fossil fuel C (such as domestic fuel oil, propane, butane, city gas, etc.), and its oxidant OX is air. This ensures central heating of the residential BAT, heating of the main hot water circuit or the secondary circuit.

[0047] The burner 3 of the device heats the heat transfer fluid or the hot water circuit EC-EF-EP.

[0048] The electrolyzer 2 can use several types of electrolysis technologies such as alkaline membranes or proton exchange membranes (PEM).

[0049] The electrolyzer can be advantageously integrated into the combustion device 1 in order to simplify the electronic and / or mechanical interface between the device 1 and the electrolyzer 2. Alternatively, the electrolyzer can be located outside the combustion device 1 but as close as possible to the latter and in the same location as the latter, taking into account the hybridization with the latter.

[0050] The output of the electrolyzer is dimensioned in relation to the combustion device 1 which needs to optimize its efficiency and combustion. For example, for use in an individual household, the power of the electrolyzer can be set between 200 and 3000 W.

[0051] Water, rainwater, or filtered and / or purified water (desalination, osmosis, distillation, etc.) from the network is supplied, whether continuously or not, to produce hydrogen H2 and oxygen O2.

[0052] In order to optimize the energy efficiency of the installation, especially the electrolyzer 2, on the one hand, the heat generated during the electrolysis operation is recovered, and on the other hand, cold water EF from the return of the heating circuit can be fed into the exchanger 2a while enabling the electrolyzer 2 to be cooled for optimal functioning.

[0053] This water EP can be preheated by the heat exchanger 2a, which can be arranged inside or at the outlet of the electrolyzer 2, by the heat reaction generated there. The heat exchanger may or may not be integrated with the electrolysis cell 2c.

[0054] This exchanger 2a is, for example, a liquid / liquid heat exchanger or an air / liquid heat exchanger.

[0055] Next, the preheated water EP coming from the exchanger 2a of the electrolyzer 2 is sent to the boiler 1 to be heated (hot water circuit EC). Also, the preheated water EP can be used for the supply of a secondary circuit (such as a water heater for domestic hot water).

[0056] Integrating the electrolyzer 2 directly into the boiler is advantageous as it enables a mechanically simple system with simpler fluid transfer. This allows for the design of a boiler with an integrated electrolyzer from the design / manufacturing stage, bringing components / functions as close as possible from the perspectives of fluid, mechanical, thermal, electronic, and computer. This results in advantages in terms of compactness, weight, safety, and manufacturing cost.

[0057] The heat exchanger 2a can advantageously be integrated into the electrolyzer 2 or even directly into the electrolytic cell 2c. To enable optimal heat transfer as much as possible, it is advantageous to capture the released heat as close as possible to the cell 2c mechanically, fluidly, and thermally. This avoids heat losses and fluid constraints induced by an exchanger where heat needs to be transferred outside the electrolyzer 2 and the amount of heat moves through a heat transfer fluid. A pump is also required for circulation, causing additional energy consumption. Integrating the heat exchanger 2a directly into the electrolyzer 2 or the electrolytic cell 2c improves the overall efficiency (thermal, energy, mechanical, fluid, etc.). This technical configuration is a clear additional advantage when it is desired to integrate the electrolyzer 2 into the boiler.

[0058] Hydrogen H2 gas and / or oxygen O2 gas is sent to the burner inlet 3 of the boiler 1 via a multi-channel injection system 4 to improve the combustion of the boiler 1.

[0059] The hybridization regime, i.e., the intake ratio between hydrogen H2 gas and / or oxygen O2 gas and the initial fossil fuel C and / or oxidant OX, can advantageously range from 0% to 100%.

[0060] Normally, in town gas, the mixture in the combustion device 1 can be enriched with hydrogen H2 (on the order of 6 - 20 mass%).

[0061] Hybridization provides the contribution of decarbonized energy to fossil fuels thus achieved. In particular, hybridization improves the balance between carbon and the environment (the flame F of the burner 3 of the combustion device 1 produces less NOx, CO2, CO, etc.) and improves energy efficiency.

[0062] In particular, oxygen O2 prevents the formation of NOx, and hydrogen H2 optimizes the combustion of fossil fuel C.

[0063] It should also be noted that the proposed system enables the oxygen O2 produced by the electrolyzer 2 to be recycled instead of being released into the atmosphere because it cannot be stored and / or transported simultaneously with hydrogen in the city gas network.

[0064] This improves the overall yield.

[0065] By recovering oxygen O2, in combination with the cogeneration performed by the exchanger 2a, the overall efficiency of the electrolysis and combustion processes increases, and the overall thermal efficiency of the electrolyzer 2 can reach up to 98%.

[0066] Since gas production is also carried out on-site, problems of transportation and adaptation of the gas network are avoided.

[0067] This system also includes an electronic module 5 connected to sensors 6x of the electrolyzer 2, the combustion device 1, and / or equipment that are not comprehensively shown in FIG. 1 because their number and type depend on the combustion device 1 to be hybridized.

[0068] Sensors 6x are usually thermal probes, gas flow meters, pressure sensors, or gas / liquid flow meters. They are arranged, for example, on the circuit through which water or the heat transfer fluid circulates in EC-EF-EP. Or they can be arranged in the circuit through which the fuel C and / or the oxidant OX circulate. These sensors 6x may also be inside the combustion device 1 and / or the electrolyzer 2.

[0069] Module 5 controls the intake of the electrolyzer 2 and / or the combustion device 1 for hydrogen H2 gas and / or oxygen O2 gas. This electronic module 5 may or may not be integrated into the electrolyzer 2, either in relation to its control electronics 2b or not.

[0070] The control executed by the electronic module is a function of the information transmitted by the electronics 1a of the combustion device 1 and / or by the sensors 6x of the installation.

[0071] For example, module 5 starts the electrolyzer 2 when the start-up of the combustion device 1 is detected.

[0072] Also, module 5 controls the intake of hydrogen H2 gas and / or oxygen O2 gas at the inlets 3a and 3b of the combustion device 1 as long as the water circulating in the circuit EC-EF-EP has not reached a predetermined temperature setpoint.

[0073] The detection of the start-up of the electrolyzer 2 is typically, for example, detected by the consumption of fossil fuel C by the gas flowmeter 6x, detected by the consumption of fossil fuel C by the pressure sensor 6x (usually, consumption is detected when a lower or a pressure lower than the reference pressure is detected), detection of the electrical switching of the intake valve of fossil fuel C, performed by the detection of the call for fuel C in the system, such as by the detection of an electronic command established by the electronic module 5 that communicates between the electrolyzer 2 and the combustion device 1.

[0074] More generally, module 5 controls the intake of C, OX, H2 and / or O2 fluids into the boiler 1 via the injection system 4 in order to control the combustion state in line with the consumption of fuel C / oxidizer OX.

[0075] Module 5 is programmed according to the type of combustion device 1 and the fuel C used in order to obtain the maximum energy efficiency with the aim of minimizing the consumption of fossil fuel C.

[0076] This system further includes an injection system 4 for H2 gas and / or O2 gas coming from the electrolyzer 2. This injection system 4 (usually composed of mechanical parts and fluid components 4x such as mixers, flaps, control valves (manual and / or electronically controlled), solenoid valves, circulation and / or routing tubes, restrictions, etc.) is connected to at least one fuel inlet 3a and / or at least one oxidizer inlet 3b of the combustion device 1.

[0077] Therefore, the combustion device 1 can integrate an injection system 4 that defines several fluid injection paths for mixing hydrogen H2 gas and / or oxygen O2 gas, in particular with either fuel C or oxidizer OX. The injection system 4 is connected to the burner 3 by injection connections 8a and 8b.

[0078] For example, these gases can be injected separately or simultaneously into the burner 3 of the combustion device 1 via the air intake (oxidizer OX).

[0079] The gases can also be injected separately or simultaneously into the burner 3 of the combustion device 1 via the city gas inlet (fuel C).

[0080] In another alternative, the mixing between hydrogen gas, oxygen gas, and fuel (or oxidizer) fluid can be carried out inside the injection system 4 configured for this purpose. Next, the injection into the inlet 3a / exit 3b is carried out after mixing. In the example of FIG. 2, two inlets 3a and 3b allow the injection of hydrogen H2 gas and / or oxygen O2 gas respectively: Inlet 3a: accompanied by methane C (injection pipe 8a) into the chamber of the burner 3. Inlet 3b: accompanied by air OX (injection 8b) directly into the flame F of the burner 3.

[0081] Mixers 4a and 4b are provided upstream of these two inlets 3a and 3b to control the ratio of hydrogen H2 and oxygen O2 sent to each.

[0082] Since this injection is possible at various inlets of the combustion device 1, all possible intake modes of the fluids C, OX, H2, and O2 are covered in order to optimize combustion.

[0083] For a given lower calorific value (LCV), different amounts of fuel are required. When comparing hydrogen to methane or LPG (such as propane and butane), it is about three times as much. That is, to obtain the same LCV, about three times the volume of hydrogen is required. This means that when hydrogen (and / or oxygen) is injected into the initial fuel, a part of its initial volume is replaced, and thus a part of the initial LCV is removed. To compensate for this effect and improve the energy efficiency, performance / yield, or energy optimization of the facility, it is advantageous to inject hydrogen and / or oxygen also on the oxidizer inlet side of the burner. In addition to avoiding fuel quantity / LCV limitations, this intake possibility (3b) enables finer control of the final combustion of the double adjustment (energy input on the fuel side and / or oxidizer side) and 100% of the input, that is: hydrogen, oxygen, oxidizer (usually ambient air), and the initial fuel, covering a wider range of possible parameterizations.

[0084] For this purpose, the controlled intake mode can be on / off or proportional (0 - 100% hydrogen H2 and / or oxygen O2, on the fuel C side and / or oxidizer OX side), whereby the fluid can be injected, either individually or collectively, completely or partially, through at least one of the inlets 3a and / or 3b of the burner 3 of the combustion device 1, regardless of whether it is mixed or not. This enables complete control.

[0085] The electronic module 5 can adjust the injection system 4 according to different operating stages of the combustion device 1 and define the gas - liquid flows injected into different inlets 3a and / or 3b so as to allow the "optimal fuel / oxidizer ratio" in the burner 3 of the combustion device 1.

[0086] In particular, the electronic module 5 performs the following functions. · Establishment of requirements by the electronic device 1a that guarantees the feedback control of the boiler 1. · Control of the electrolytic cell 2 to provide an initial hydrogen H2 and / or oxygen O2 flow rate. · Adjustment of the opening / flow rate of the intake fluid component 4x.

[0087] It should also be noted that the adjustment of the injection system 4 can be carried out either electronically or manually in order to enable correct adaptation to each model of the combustion device 1, particularly their operating speeds and / or burner 3 models.

[0088] Furthermore, the electronic module 5 comprises at least one electrical communication module 5a that enables data exchange with the remote server 7. The communication can be carried out by any means such as GSM mobile phones, RFID, SigFox, LoRa, low-consumption communications such as LTE-M, or PLC current to a centralized node among multiple dwellings.

[0089] The data transferred to the server 7 is, for example, the operating data from the combustion device 1, the electrolytic cell 2, as well as the data from the sensors 6x of the system or the settings of the fluid components 4x of the injection system 4.

[0090] Therefore, the server 7 can perform, among other things, the following functions, namely, monitoring, maintenance, storage, and analysis of data from different types of combustion devices 1.

[0091] The energy optimization of fossil fuel combustion can be achieved by injecting hydrogen and / or oxygen (on the fuel or oxidizer side), and these gases are produced by an electrolysis system of water (and heat is recovered in an exchanger or system if possible). Then, the gases are mixed by a multi-channel system for administering the composition (in particular, the volume ratio of hydrogen, oxygen, oxidizer (generally ambient air), and the initial fuel). This change in the initial fuel and the oxidizer at the burner inlet has the effect of replacing part of the initial fossil fuel with electricity consumption (electrons). In order to make this energy substitution environmentally meaningful, it seems obvious that such a facility should be connected to a renewable energy source that provides electrical energy generated with low CO2 emissions.

[0092] However, if the system is permanently connected to a renewable energy source, this is insufficient because the operating range becomes narrow. In particular, renewable energy sources do not function well at night, are intermittent, or do not function well when there is no wind or sun. Furthermore, if the facility is permanently connected to the conventional electrical network, it is not known when it is appropriate to operate, by ensuring that the electrical energy consumed has less environmental impact than the initial fossil fuel to be replaced.

[0093] Therefore, the interaction with the power distribution network is advantageous for the energy optimization system to provide its high - added - value environmental functions. This interaction can be realized by a remote communication system connected between the facility and the electrical smart grid to which it is (electrically) connected. This remote communication enhances the adaptability of the facility and enables hot - water production with low CO2 emissions. Furthermore, the facility can be connected, monitored, and / or controlled by an operator and / or an energy regulator (server). This enables, on the one hand, correctly selecting / tracking the power sources used through various mechanisms (such as blockchain, energy certificates, etc.), and on the other hand, switching in real - time from one electrical energy source to another according to the parameters determined by the electrical network (control signals, off - peak / peak times, green / blue times, etc.). It is also possible to switch to a local power plant for self - consumption. In embodiments where a local power plant exists near the facility, the communication system and the remote server can determine that it is better to switch to and control this local power source. Thus, it is possible to ensure that the facility is supplied with the most environmentally and / or economically competitive electricity (in this case, locally and off - grid generated).

[0094] Furthermore, the remote communication system advantageously enables sending to the server different parameters related to security, monitoring, energy consumption, the amount of energy consumed depending on the type of power source, and savings in terms of CO2 emissions achieved and calculated in real - time. It is also possible to send various parameters related to predictive and corrective maintenance, energy service billing, environmental certification, etc.

[0095] Therefore, the distribution network can advantageously control the start-up and stop of the hydrogen and / or oxygen generation device 2, and the remote server 7 can transmit parameters representing the ratios of hydrogen, oxygen, and fuel fluid injected into the fuel inlet 3a, and the ratios of hydrogen, oxygen, and oxidant fluid injected into the oxidant inlet 3b.

[0096] The cheapest energy with the least CO2 emissions is known to be generated from renewable energy sources, with the shortest transport distance and the fastest consumption. This facility provides added value in situations where energy with low CO2 emissions for production is used for enhancing or replacing fossil combustion. For this purpose, it is advantageous for the facility to be able to obtain information regarding the selected power source in order to optimize the energy and environmentally targeted fossil combustion. Thus, this facility enables the removal / reduction of the pollution of CO2 emitted by the initial fuel through direct power consumption that is more competitive (environmentally and economically) than the storage of this electrical energy. Furthermore, since energy sources with low CO2 emissions are cheaper per year than other production systems, the hybridization of fossil fuel combustion and electrical energy from energy sources with low CO2 emissions will be more competitive in the future. And the same applies to locally produced electrical energy in off-grid self-production.

[0097] As can be seen, the proposed system is easily compatible with existing facilities incorporating one or more combustion devices 1 equipped with burners 3.

[0098] Thereby, the energy efficiency of the hydrogen vector can be optimized without developing a retrofit or new gas transport infrastructure.

[0099] The boiler's computer has information on combustion parameters. To respond as quickly and accurately as possible to changes in these combustion parameters, the facility can advantageously communicate / interact with the boiler to calculate in real time the optimal air-fuel mixture (hydrogen, oxygen, oxidant, initial fuel), as well as the injection ratio and injection path (oxidant and / or fuel) for execution. Furthermore, direct interaction between the facility and the boiler avoids the use of certain expensive sensors (such as flow meters) whose response times vary. This direct computer interaction also improves safety.

[0100] In the example shown in FIG. 1, the electrolyzer 2 is coupled to a renewable energy power source ENR, in this case a solar power panel that is also used to supply power to the power grid of the building BAT of the facility.

[0101] In FIG. 1, the system also includes a local storage system S.H2 that can store all or part of the surplus hydrogen H2 produced by the electrolyzer 2. The system can also include a local storage system S.O2 that can store all or part of the surplus oxygen O2 produced by the electrolyzer 2. Local is understood to mean storing in or near the building.

[0102] The electronic module 5 controls the injection system 4 to supply the stored hydrogen and / or oxygen to the burner 3 subsequently, in a manner that is not synchronized with the production of hydrogen and / or oxygen H2, if necessary.

[0103] The surplus hydrogen H2 and / or oxygen O2 stored in this way can also be used to generate electrical energy (usually, in FIG. 1, the fuel cell PAC receives the hydrogen H2 stored in the system S.H2 as an input, converts the hydrogen into electrical energy, and supplies power to the network of the building BAT).

[0104] [Summary of the above embodiments and figures] The following table summarizes the components implemented in an embodiment of an energy and environmental optimization system for a facility including at least one combustion device, presented with reference to FIGS. 1, 2, and 3.

[0105] [Table 1]

[0106] In a further particularly advantageous application, a facility with at least one energy and environmental optimization system is shown in FIG. 3, where the electrolyzer 2 and / or the injection system 4 is directly integrated into the combustion device 3.

Claims

1. A system for energy and environmental optimization of a facility comprising at least one combustion device (1) comprising at least one burner (3), at least one production device (2) for producing hydrogen and / or oxygen by electrolysis of water, at least one injection system (4) connected to at least one fuel inlet (3a) and / or oxidant inlet (3b) of the burner (3) of the combustion device (1), injecting a gas coming from the production device (2) for producing hydrogen and / or oxygen by electrolysis of water, and / or a mixture of these gases, and a fuel fluid into the fuel inlet (3a), and / or injecting a gas coming from the production device (2) for producing hydrogen and / or oxygen by electrolysis of water, and / or a mixture of these gases, and an oxidant fluid into the oxidant inlet (3b) an injection system (4) capable of doing so, at least one electronic module (5) connected to the production device (2) for producing hydrogen and / or oxygen by electrolysis of water, the combustion device (1), and / or sensors (6x) installed in the facility, the module (5) controlling the production device (2) and / or the injection system (4) based on at least one piece of information coming from the combustion device (1) and / or the sensors (6x) of the facility comprising, the production device (2) comprising a heat exchanger (2a) for preheating water (EP) intended to be subsequently heated (EC) by the combustion device (1), a local storage system (S.H2) and / or a local storage system (S.O2) capable of storing all or part of the surplus hydrogen and / or oxygen produced by electrolysis of water in the production device (2), the electronic module (5) being able to control the injection system (4) in a way that is asynchronous with the production of hydrogen and / or oxygen in order to subsequently supply the combustion device (1) with the hydrogen and / or oxygen thus stored. A system characterized by this.

2. The system according to claim 1, characterized in that the production device (2) comprises a heat exchanger (2a) for cooling the production device (2).

3. The injection system (4) is characterized in that it comprises fluid components (4x) for controlling the injection of hydrogen gas and / or oxygen gas into the fuel inlet (3a) of the burner (3) of the combustion device (1) and / or the oxidant inlet (3b) of the burner (3) of the combustion device (1) according to different modes, the system according to claim 1.

4. The electronic module (5) is configured to control different injection modes in order to inject all or part of the hydrogen gas and / or oxygen gas into the fuel inlet (3a) of the burner (3) of the combustion device (1) and / or in order to inject all or part of the hydrogen gas and / or oxygen gas into the oxidant inlet (3b) of the burner (3) of the combustion device (1), the system according to claim 3.

5. The injection system is configured such that the mixing of hydrogen gas and / or oxygen gas with the fuel fluid or the oxidant fluid is carried out within the system before being injected into at least one fuel inlet and / or oxidant inlet of the combustion device, the system according to any one of claims 1 to 4.

6. The electronic module (5) comprises at least one electrical communication module (5a) enabling it to transmit data of the combustion device (1) and / or of the production device (2) for producing hydrogen and / or oxygen, and / or data of the sensors (6x) of the installation and / or of the injection system (4) to a remote server (7), the system according to any one of claims 1 to 5.

7. The system according to claim 6, characterized in that it comprises a remote server (7) for storing and processing the operating data received from one or more electronic modules (5) to generate maintenance information.

8. The remote server (7) can control the startup of the production device (2) for producing hydrogen and / or oxygen, and / or the remote server (7) can transmit parameters representing the ratio of hydrogen and / or oxygen and / or fuel fluid injected into the fuel inlet (3a), and / or the ratio of hydrogen and / or oxygen and / or oxidant fluid injected into the oxidant inlet (3b), the system according to claim 6 or 7.

9. The system according to any one of claims 1 to 8, characterized in that the generating device (2) for generating hydrogen and / or oxygen by electrolysis of water is coupled to a renewable energy (ENR) power source.

10. The system according to any one of claims 1 to 9, characterized in that it comprises a fuel cell (PAC) which receives as input the hydrogen stored in the local storage system (S.H2) and converts said hydrogen into electrical energy.

11. An assembly (10) comprising at least one combustion device (1) provided with a burner (3) and at least one system according to any one of claims 1 to 10.

12. The assembly (10) according to claim 11, characterized in that the combustion device (1) incorporates the generating device (2) and / or the injection system (4) for generating hydrogen and / or oxygen by electrolysis of water.

13. The assembly (10) according to claim 11 or 12, characterized in that the combustion device (1) and the injection system (4) are configured to exchange parameters representing the ratio of hydrogen and / or oxygen and / or fuel fluid injected into the fuel inlet (3a) and / or the ratio of hydrogen and / or oxygen and / or oxidant fluid injected into the oxidant inlet (3b).

14. Use of the system according to any one of claims 1 to 10, wherein the combustion device (1) is a boiler.

15. Use of the assembly according to any one of claims 11 to 13, wherein the combustion device (1) is a boiler.

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