Methane hydrate dissociation-electrolysis hybrid combustor

Abstract

The application discloses a kind of methane hydrate decomposition-electrolysis mixed hydrogen combustor, it is related to fuel efficiency optimization technical field, containing reaction kettle, decomposition module and reaction module;Decomposition module contains temperature and pressure control alarm system and auxiliary decomposition unit;Reaction module contains electrolytic water reaction unit, combustor reaction unit and control unit;Through temperature and pressure control alarm system, promote hydrate decomposition into water and methane by adjusting the internal pressure of decomposition module, temperature;Hydrogen obtained by electrolytic water reaction unit electrolytic water is partly sprayed by hydrogen jet head and ignited by ignition system to assist hydrate decomposition, another part is mixed with methane as mixed raw material.The present application is designed according to the nature of gas hydrate and the combustion stability of mixed hydrogen natural gas, using gas hydrate and hydrogen obtained by water electrolysis as raw material, a kind of efficient and stable mixed hydrogen combustor is invented, low concentration gas is efficiently utilized, the problem of large emptying of low concentration coal mine gas in coal mine gas is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel efficiency optimization, and more particularly to a methane hydrate decomposition-electrolysis mixed hydrogen burner. BACKGROUND

[0002] At present, for energy utilization, researching clean, efficient and sustainable new energy power propulsion technology has become an important trend to realize green development, and the application of high-efficiency burner technology is an effective solution. CH4 is a transitional fuel into the future carbon-constrained world and an important greenhouse gas, and any emptying will lead to environmental deterioration. CH4 and H2 after water electrolysis are both high-quality clean energy. Due to the great risk of gas explosion in the storage and transportation process of CH4 gas, the hydrate method for transportation and preservation becomes a reliable method.

[0003] However, in order to directly and effectively improve the energy utilization efficiency of methane hydrate and reduce energy loss in the process, the efficient utilization rate of methane hydrate must be further improved.

[0004] Therefore, researching a stable burner with efficient utilization of methane hydrate as raw material is an urgent problem for those skilled in the art. SUMMARY

[0005] Therefore, the present application provides a methane hydrate decomposition-electrolysis mixed hydrogen burner, which improves the energy utilization efficiency of methane hydrate and reduces energy loss in the process. In order to achieve the above purpose, the present application adopts the following technical solutions:

[0006] A methane hydrate decomposition-electrolysis mixed hydrogen burner comprises a reaction kettle, a decomposition module and a reaction module; the decomposition module and the reaction module are arranged in the reaction kettle;

[0007] The decomposition module comprises a temperature and pressure control alarm system and an auxiliary decomposition unit;

[0008] The reaction module comprises an electrolytic water reaction unit, a burner reaction unit and a control unit;

[0009] The temperature and pressure control alarm system adjusts the internal pressure and temperature of the decomposition module to promote the decomposition of hydrate into water and methane; hydrogen obtained by electrolyzing water is partially sprayed by a hydrogen jet head and ignited by an ignition system to assist the decomposition of hydrate, and the other part is mixed with methane as a mixed raw material.

[0010] Optionally, the reaction kettle comprises a reaction kettle body, a reaction kettle outer wall and a reaction kettle inner wall;

[0011] The hydrate inlet is communicated with the inner wall of the reaction kettle, and the exhaust gas outlet is arranged at the top of the outer wall of the reaction kettle; the hydrogen gas outlet, the oxygen gas outlet and the oxygen supply tank are arranged on the outer wall of the reaction kettle; the water obtained by decomposing the hydrate through the filtering water outlet is introduced into the reaction cavity formed by the inner wall of the reaction kettle and the outer wall of the reaction kettle, and the controllable porous partition plate is provided with a gas concentration detector, an ignition system and a temperature and pressure control alarm system;

[0012] The hydrogen gas nozzle and the oxygen gas nozzle are arranged on the inner wall of the reaction kettle, the hydrogen gas nozzle is arranged on the inner wall of the reaction kettle and is controlled to act by the hydrogen pressure control system; and the oxygen gas nozzle is arranged on the other side of the inner wall of the reaction kettle and is controlled to act by the oxygen pressure control system.

[0013] The direct-current power supply is arranged in the inner wall of the reaction kettle, the filtering water outlet is arranged at the bottom of the inner wall of the reaction kettle, the hydrogen gas and the oxygen gas partition plate symmetrically divide the electrolytic water reaction unit, the anode plate and the cathode plate are arranged at the symmetric positions and penetrate the bottom of the inner wall of the reaction kettle, and the two electrodes of the direct-current power supply are connected with the anode plate and the cathode plate respectively.

[0014] Optionally, the control unit comprises a gas concentration detector, a temperature sensor, a pressure sensor, a temperature and pressure control alarm system and a water quantity control system.

[0015] The temperature and pressure control alarm system carries out danger alarm and temperature and pressure control based on the monitoring information of the gas concentration detector, the temperature sensor and the pressure sensor.

[0016] The water quantity control system controls the electrolytic water reaction based on the monitoring information of the water quantity monitor.

[0017] Optionally, the temperature sensor is a thermocouple temperature sensor, the pressure sensor is a diffused silicon pressure sensor, and the gas concentration detector is a constant potential electrolytic cell type gas sensor or a semiconductor type gas sensor.

[0018] Optionally, in the decomposition module, the reaction temperature is 5-10 DEG C, and the reaction pressure is 0.1 MPa or negative pressure to promote decomposition.

[0019] Optionally, the water quantity monitor comprises a float ball type liquid level sensor and a liquid level meter probe, and the liquid level information is detected through the float ball type liquid level sensor and the liquid level meter probe.

[0020] Optionally, in the electrolytic water reaction unit, the water resistance is 17-19 MΩ·cm, the anode catalyst is Ir / Pt / RuO2 / IrO2, the cathode catalyst is Pt / Rh / Pd, the electrode plate is a stainless steel plate, and the current collector is a porous titanium plate / silver copper alloy / silver nickel copper alloy.

[0021] Optionally, in the burner reaction unit, the hydrogen blending ratio is 10%-50%, the upper explosion limit of the mixed gas is 62.89%-73.53%, and the lower explosion limit is 5.38%-7.73%. The volume proportion of the mixed gas is within the explosion limit corresponding to the hydrogen blending ratio.

[0022] Optionally, the decomposition reaction of methane hydrate is divided into an initial decomposition reaction and an auxiliary decomposition reaction, wherein the auxiliary decomposition reaction, the water electrolysis reaction and the burner reaction are carried out simultaneously in the same system.

[0023] Optionally, the present invention provides a methane hydrate decomposition-electrolysis hydrogen mixing burner, comprising a methane hydrate decomposition module and a reaction module;

[0024] The cylindrical design at the bottom of the device helps to gather water after the decomposition of methane hydrate, facilitating the electrolysis reaction;

[0025] The cylindrical design of the top of the device prevents the formation of water droplets on the top, which affects the combustion process; it also facilitates gas discharge.

[0026] Optionally, in the methane hydrate temperature and pressure unit, according to the properties of methane hydrate, the reaction temperature is 5-10° C., and the reaction pressure is 0.1 MPa (or negative pressure promotes decomposition).

[0027] Optionally, in the burner reaction unit, the hydrogen blending ratio is about 10% to 50% (a mixed natural gas with a hydrogen content of less than 20% is called hydrogen alkane, and greater than 20% is called HCNG), and a stable combustion reaction occurs with oxygen. In the burner reaction unit, the hydrogen blending ratio is about 10%-50%, the upper explosion limit of the mixed gas is about 62.89%-73.53%, and the lower explosion limit is about 5.38%-7.73%. The volume proportion of the mixed gas is within the explosion limit corresponding to the hydrogen blending ratio.

[0028] Optionally, in the water electrolysis reaction unit, the resistance of water is 17 to 19 MΩ·cm, the anode catalyst is Ir / Pt (such as RuO2, IrO2 and other commonly used anode oxygen evolution catalysts), the cathode catalyst is Pt (such as Rh, Pd), the electrode plate is a stainless steel plate, and the current collector is a porous titanium plate (or silver-copper alloy, silver-nickel-copper alloy).

[0029] From the above technical solution, it can be seen that the present invention discloses a methane hydrate decomposition-electrolysis hydrogen mixing burner, which has the following beneficial effects compared with the prior art:

[0030] This invention primarily provides a methane hydrate decomposition-electrolysis-hydrogen mixing burner based on the properties of CH4 hydrate and the stability of hydrogen-mixed natural gas combustion. Taking into account the instability of gas combustion and the low utilization rate caused by concentration conditions, this invention uses methane hydrate as the raw material and undergoes a series of reaction processes to form a burner. This ensures more stable fuel combustion, improves energy utilization efficiency, and provides energy supply to coal mines through combustion, solving the problem of large-scale discharge of low-concentration gas extracted from coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0032] Figure 1 A schematic structural diagram of a methane hydrate decomposition-electrolysis hydrogen mixing burner provided by the present invention;

[0033] Among them, the outer wall of the reactor 1, the hydrate inlet 2, the ignition system 3, the exhaust gas outlet 4, the oxygen pressure control system 5, the oxygen supply tank 6, the water control system 7, the anode plate 8, the filter type water outlet 9, the cathode plate 10, the DC power supply 11, the hydrogen nozzle 12, the oxygen nozzle 13, the inner wall of the reactor 14, the hydrogen pressure control system 15, the controllable porous partition 16, the hydrogen exhaust port 17, the oxygen exhaust port 18, the hydrogen and oxygen partition 19, the temperature and pressure control alarm system 20, and the gas concentration detector 21;

[0034] Figure 2 This is a working flow diagram of a methane hydrate decomposition-electrolysis hydrogen mixing burner provided by the present invention. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The embodiment of the present invention discloses a methane hydrate decomposition-electrolysis hydrogen mixing burner.

[0037] Contains decomposition module and reaction module;

[0038] The decomposition module includes a pressure control monitoring unit, a temperature control monitoring unit, and an auxiliary decomposition unit;

[0039] The reaction module includes a water electrolysis reaction unit, a burner reaction unit, and a control unit;

[0040] The pressure control monitoring unit and the temperature control monitoring unit are used to adjust the temperature and pressure inside the decomposition module to promote hydrate decomposition; part of the hydrogen obtained by electrolysis in the water electrolysis reaction unit is burned through hydrogen injection to assist hydrate decomposition, and the other part is mixed with the separated methane as a raw material.

[0041] Furthermore, the present invention is primarily based on the characteristics of methane hydrate, such as its long-distance transportability, good stability, and efficient utilization. The container material is preferably a horizontal double-layer vacuum insulated high-temperature storage tank, with the inner liner preferably being austenitic stainless steel, and the outer container preferably being made of Q235-B, Q245R, or 345R. The interlayer between the inner and outer containers is preferably filled with an insulating material, preferably pearlescent sand or aluminum foil, and the inner layer is made of quartz sand, clay, magnesite, dolomite, or the like.

[0042] Furthermore, in the methane hydrate decomposition unit of the present invention, the reaction temperature is preferably 5 to 10° C., and the reaction pressure is preferably 0.1 MPa (or negative pressure promotes decomposition).

[0043] Furthermore, the controllable porous partition controls the reaction concentration of hydrogen and oxygen. When a certain concentration is reached, the pores are closed; when the concentration is insufficient, the pores are opened.

[0044] Furthermore, since hydrate decomposition is an endothermic reaction, decomposition is generally performed above freezing. In the methane hydrate decomposition unit of the present invention, the temperature within the reactor is controlled at 5-10°C and the pressure within the reactor is 0.1 MPa (or negative pressure promotes decomposition). By controlling the reaction temperature and pressure, the hydrate decomposition equilibrium is maintained. The auxiliary decomposition unit relies on intermittent hydrogen injection and combustion at high temperatures to improve decomposition efficiency. While the methane hydrate decomposition reaction is occurring in the present invention, the decomposed water and methane are separated; the separated pure water is collected centrally, and the separated methane is used as a raw material for mixing with hydrogen.

[0045] Furthermore, in the water electrolysis reaction unit of the present invention, high-purity water is preferably used, and the resistance of the high-purity water is preferably 17 to 19 MΩ·cm. The anode catalyst is Ir / Pt (such as RuO2, IrO2 and other commonly used anode oxygen evolution catalysts), the cathode catalyst is Pt (such as Rh and Pd), the electrode plate is a stainless steel plate, and the current collector is a porous titanium plate (or silver-copper alloy, silver-nickel-copper alloy).

[0046] Furthermore, the electrolytic water reaction unit preferably adopts water electrolysis hydrogen production technology, solid polymer as electrolyte, no need to create an alkaline environment, and a zero-gap electrolyzer is prepared with a DC power supply. It is further preferred to use DuPont's Nafion117 membrane, and use the immersion reduction method to prepare a membrane electrode, and assemble the membrane electrode into a zero-gap electrolyzer. In the electrolytic water reaction unit, the amount of water generated by the decomposition of hydrates must reach a certain standard before the electrolytic water reaction can begin, and a water amount monitor needs to be installed. The present invention adds a monitoring device for the amount of water generated by the decomposition of methane hydrates to control the occurrence of the electrolytic reaction. While the electrolytic water reaction is proceeding, it is preferred to separate the hydrogen and oxygen generated, and the gases are centrally processed.

[0047] Furthermore, in the burner reaction unit of the present invention, the hydrogen blending ratio is 10% to 50% (a mixed natural gas with a hydrogen content of less than 20% is called HYTHANE, and a natural gas with a hydrogen content greater than 20% is called HCNG), the upper explosion limit of the mixed gas is 62.89%-73.53%, and the lower explosion limit is 5.38%-7.73%. The volume proportion of the mixed gas is within the explosion limit corresponding to the hydrogen blending ratio.

[0048] Furthermore, the present invention preferably regulates the temperature and pressure of the environment in which the methane burner reacts, processes the generated gas while the reaction occurs, decomposes oxygen through electrolysis of water and introduces it into the oxygen supply unit, and the methane burner preferably maintains the reaction through an external supply of oxygen, and part of the hydrogen from the electrolysis of water is introduced into the mixed combustion device and partly participates in the auxiliary decomposition reaction.

[0049] Furthermore, in the present invention, the gas generated by the methane hydrate decomposition unit and the hydrogen and oxygen generated by the water electrolysis reaction unit are both burned to provide energy to the outside.

[0050] Furthermore, in the present invention, the control unit preferably includes a temperature sensor, a pressure sensor, a water control system 7, a temperature and pressure control alarm system 20, and a gas control system. The temperature and pressure control alarm system 20 of the present invention issues an alarm signal when the thermal risk level or the pressure risk level exceeds a set level.

[0051] The modules of the methane hydrate decomposition-electrolysis and hydrogen mixing burner of the present invention are interconnected and the burner is a whole composed of various reaction units.

[0052] The technical solutions provided by the present invention are described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0053] Example 1

[0054] A methane hydrate decomposition-electrolysis and hydrogen mixing burner for energy supply in coal mining areas, comprising a reactor, a decomposition module and a reaction module; the decomposition module and the reaction module are placed in the reactor;

[0055] The decomposition module includes a temperature and pressure control alarm system 20 and an auxiliary decomposition unit;

[0056] The reaction module includes a water electrolysis reaction unit, a burner reaction unit and a control unit;

[0057] The temperature and pressure control alarm system 20 regulates the internal pressure and temperature of the decomposition module to promote the decomposition of hydrates into water and methane; part of the hydrogen obtained by electrolysis of water in the water electrolysis reaction unit is sprayed through the hydrogen nozzle 12 and ignited by the ignition system 3 to assist hydrate decomposition, and the other part is mixed with methane as a mixed raw material.

[0058] The methane hydrate decomposition reaction is carried out at 6°C and 0.1 MPa (or negative pressure to promote decomposition). After the decomposition reaction is initiated and tested by the water control system 7, the water electrolysis reaction is initiated to generate hydrogen and oxygen. Simultaneously, the hydrogen nozzle 12 sprays a hydrogen flame to melt the ice layer (mitigating the hydrate's self-protection effect), and the temperature and pressure control system begins operation. The hydrogen and gas content in the reactor reaches the corresponding ratio, with a hydrogen blending ratio of 10% to 50% (mixed natural gas with a hydrogen content of less than 20% is called HYTHANE, and greater than 20% is called HCNG). The upper explosion limit of the mixed gas is 62.89%-73.53%, and the lower explosion limit is 5.38%-7.73%. The volume ratio of the mixed gas is within the explosion limits corresponding to the hydrogen blending ratio. The ignition device is activated, and the combustion reaction begins. In the water electrolysis reaction unit, the resistance of high-purity water is 18MΩ·cm, the anode catalyst is Ir / Pt (such as RuO2, IrO2 and other commonly used anode oxygen evolution catalysts), the cathode catalyst is Pt (such as Rh and Pd), the electrode plate is a stainless steel plate, and the current collector is a porous titanium plate.

[0059] Example 2

[0060] A methane hydrate decomposition-electrolysis hydrogen mixing burner, further comprising a reactor body, a reactor outer wall 1 and a reactor inner wall 14;

[0061] The top of the reactor body is provided with a hydrate inlet 2 connected to the reactor inner wall 14, and the top of the reactor outer wall 1 is provided with an exhaust gas outlet 4; the reactor outer wall 1 is provided with a hydrogen exhaust port 17, an oxygen exhaust port 18 and an oxygen supply tank 6; the water obtained after the hydrate decomposition is introduced into the reaction chamber formed by the reactor inner wall 14 and the reactor outer wall 1 through a filtered water outlet 9. A gas concentration detector 21, an ignition system 3 and a temperature and pressure control alarm system 20 are provided above the controllable porous partition 16;

[0062] A hydrogen nozzle 12 and an oxygen nozzle 13 are provided on the inner wall 14 of the reactor. The hydrogen nozzle 12 is provided on the inner wall 14 of the reactor and its operation is controlled by a hydrogen pressure control system 15. Meanwhile, the oxygen nozzle 13 is provided on the other side of the inner wall 14 of the reactor and its operation is controlled by an oxygen pressure control system 5.

[0063] A DC power supply 11 is provided inside the inner wall 14 of the reactor, a filtered water outlet 9 is provided at the bottom of the inner wall 14 of the reactor, the hydrogen and oxygen partitions 19 symmetrically divide the water electrolysis reaction unit, the anode plate 8 and the cathode plate 10 symmetrically pass through the bottom of the inner wall 14 of the reactor, and the two electrodes of the DC power supply are respectively connected to the anode plate 8 and the cathode plate 10.

[0064] The methane hydrate decomposition reaction proceeds at 6°C and 0.1 MPa (or negative pressure to promote decomposition). After the decomposition reaction is initiated and tested by the water control system 7, the water electrolysis reaction is initiated to generate hydrogen and oxygen. Simultaneously, the hydrogen nozzle 12 sprays a hydrogen flame to melt the ice layer (mitigating the hydrate's self-protection effect), and the temperature and pressure control alarm system 20 is activated. The hydrogen and gas content in the reactor reaches a corresponding ratio, with a hydrogen blending ratio of 10% to 50% (mixed natural gas with a hydrogen content of less than 20% is called HYTHANE, and greater than 20% is called HCNG). The upper explosion limit of the mixed gas is 62.89%-73.53%, and the lower explosion limit is 5.38%-7.73%. The volume ratio of the mixed gas is within the explosion limits corresponding to the hydrogen blending ratio. The ignition system 3 is activated, and the combustion reaction begins. In the water electrolysis reaction unit, the resistance of high-purity water is 18MΩ·cm, the anode catalyst is Ir / Pt (such as RuO2, IrO2 and other commonly used anode oxygen evolution catalysts), the cathode catalyst is Pt (such as Rh and Pd), the electrode plate is a stainless steel plate, and the current collector is a porous titanium plate.

[0065] Example 3

[0066] The combustible ice is directly mined for industrial processing, and the methane hydrate is decomposed in the reactor. The filter-type water outlet 9 is in an open state to filter impurities in the separated liquid. Other conditions are the same as those in Example 1.

[0067] This invention provides a methane hydrate decomposition-electrolysis-hydrogen mixing burner based on the properties of low-concentration gas and gas hydrates and the stability of hydrogen-mixed natural gas combustion. Coal mining primarily produces low-concentration gas. To improve gas utilization efficiency, low-concentration gas can be separated and purified and stored, transported, and utilized in the form of hydrates. This invention uses low-concentration gas as raw material and undergoes a series of reaction processes to form a burner. This low-concentration gas is efficiently utilized, providing energy for coal mines through mixed combustion, thereby solving the problem of large-scale discharge of low-concentration coal mine gas.

[0068] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0069] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A methane hydrate decomposition-electrolysis hydrogen burner, characterized in that: It comprises a reactor, a decomposition module and a reaction module; the decomposition module and the reaction module are placed in the reactor; The decomposition module includes a temperature and pressure control alarm system (20) and an auxiliary decomposition unit; The reaction module includes a water electrolysis reaction unit, a burner reaction unit and a control unit; The internal pressure and temperature of the decomposition module are adjusted by the temperature and pressure control alarm system (20) to promote the decomposition of hydrates into water and methane; a part of the hydrogen obtained by electrolyzing water in the water electrolysis reaction unit is sprayed through the hydrogen nozzle (12) and ignited by the ignition system (3) to assist the decomposition of hydrates, and the other part is mixed with methane as a mixed raw material.

2. The methane hydrate decomposition-electrolysis hydrogen mixing burner according to claim 1, characterized in that: The reactor comprises a reactor body, a reactor outer wall (1) and a reactor inner wall (14); The top of the reactor body is provided with a hydrate inlet (2) connected to the inner wall (14) of the reactor, and the top of the outer wall (1) of the reactor is provided with an exhaust gas outlet (4); the outer wall (1) of the reactor is provided with a hydrogen exhaust port (17), an oxygen exhaust port (18) and an oxygen supply tank (6); water obtained after the decomposition of the hydrate is introduced into the reaction chamber formed by the inner wall (14) and the outer wall (1) of the reactor through a filter-type water outlet (9); a gas concentration detector (21), an ignition system (3) and a temperature and pressure control alarm system (20) are provided above the controllable porous partition (16); A hydrogen nozzle (12) and an oxygen nozzle (13) are provided on the inner wall (14) of the reactor. The hydrogen nozzle (12) is provided on the inner wall (14) of the reactor and its operation is controlled by a hydrogen pressure control system (15). Meanwhile, the oxygen nozzle (13) is provided on the other side of the inner wall (14) of the reactor and its operation is controlled by an oxygen pressure control system (5). A DC power supply (11) is provided inside the inner wall (14) of the reactor, a filter-type water outlet (9) is provided at the bottom of the inner wall (14) of the reactor, hydrogen and oxygen separators (19) symmetrically divide the water electrolysis reaction unit, an anode plate (8) and a cathode plate (10) symmetrically penetrate the bottom of the inner wall (14) of the reactor, and two electrodes of the DC power supply are respectively connected to the anode plate (8) and the cathode plate (10).

3. The methane hydrate decomposition-electrolysis hydrogen mixing burner according to claim 1, characterized in that: The control unit includes a gas concentration detector, a temperature sensor, a pressure sensor, a temperature and pressure control alarm system (20) and a water quantity control system (7); A temperature and pressure control alarm system (20) provides danger alarms and temperature and pressure control based on monitoring information from gas concentration detectors, temperature sensors, and pressure sensors; The water quantity control system (7) controls the occurrence of the water electrolysis reaction based on the monitoring information of the water quantity monitor.

4. The methane hydrate decomposition-electrolysis hydrogen mixing burner according to claim 3, characterized in that: The temperature sensor is a thermocouple temperature sensor; the pressure sensor is a diffused silicon pressure sensor; and the gas concentration detector is a constant potential electrolytic cell type gas sensor or a semiconductor type gas sensor.

5. The methane hydrate decomposition-electrolysis hydrogen mixing burner according to claim 1, characterized in that: In the decomposition module, the reaction temperature is 5-10° C., and the reaction pressure is 0.1 MPa or negative pressure to promote decomposition.

6. The methane hydrate decomposition-electrolysis hydrogen mixing burner according to claim 3, characterized in that: The water volume monitor comprises a float type liquid level sensor and a liquid level meter probe, and detects liquid level information through the float type liquid level sensor and the liquid level meter probe.

7. The methane hydrate decomposition-electrolysis hydrogen mixing burner according to claim 1, characterized in that: In the water electrolysis reaction unit, the water resistance is 17 to 19 MΩ·cm, the anode catalyst is Ir / Pt / RuO2 / IrO2, the cathode catalyst is Pt / Rh / Pd, the electrode plate is a stainless steel plate, and the current collector is a porous titanium plate / silver-copper alloy / silver-nickel-copper alloy.

8. The methane hydrate decomposition-electrolysis hydrogen mixing burner according to claim 1, characterized in that: In the burner reaction unit, the hydrogen blending ratio is 10%-50%, the upper explosion limit of the mixed gas is 62.89%-73.53%, and the lower explosion limit is 5.38%-7.73%. The volume ratio of the mixed gas is within the explosion limit corresponding to the hydrogen blending ratio.

9. A methane hydrate decomposition-electrolysis hydrogen mixing burner according to any one of claims 1 to 8, characterized in that: It also includes that the decomposition reaction of methane hydrate is divided into an initial decomposition reaction and an auxiliary decomposition reaction, wherein the auxiliary decomposition reaction, the water electrolysis reaction and the burner reaction are carried out simultaneously in the same system.

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