Full-direct-current oxygen-enriched combustion system for natural gas

Abstract

The invention relates to the technical field of combustion, and discloses a full-direct-current oxygen-enriched combustion system for natural gas, which comprises an oxygen-enriched supply module for providing oxygen-enriched gas; the full-direct-current control module is used for controlling the combustion process through a direct-current electric field; the magnetization treatment module is used for carrying out magnetization treatment on the natural gas; a catalytic module comprising a catalyst to promote combustion of the natural gas; the fine control module comprises a sensor and an AI-based control unit and is used for monitoring and adjusting combustion parameters in real time; and the rich oxygen supply module is provided with compression swing adsorption equipment. By adopting the oxygen-enriched supply module, the system uses an oxygen-enriched technology to improve the combustion efficiency, the problem of low traditional combustion efficiency is solved, the combustion temperature and the flame intensity are directly improved by increasing the oxygen concentration, the combustion is more complete, the output efficiency of heat energy is remarkably improved, and the fuel consumption is reduced.

Description

Technical Field

[0001] The invention relates to the field of combustion technology, in particular to a full direct flow oxygen-enriched combustion system for natural gas. Background Art

[0002] In industrial applications, natural gas is widely used as a clean and efficient fuel, especially in power generation, heating and large-scale industrial combustion processes. Traditional natural gas combustion systems usually rely on air as an oxidant, with oxygen accounting for about 21%. However, a large amount of nitrogen and other non-reactive components in the air will absorb a lot of heat energy, resulting in low combustion efficiency. At the same time, a large amount of nitrogen oxides are generated during high-temperature combustion, which has a serious impact on the environment.

[0003] In order to improve combustion efficiency and reduce pollutant emissions, a variety of technologies have been developed in recent years, including oxygen-enriched combustion technology and various combustion control technologies. Oxygen-enriched combustion technology can significantly increase the combustion temperature and flame stability by increasing the oxygen concentration supplied to the combustion reaction, thereby improving thermal efficiency and reducing the generation of nitrogen oxides. However, oxygen-enriched combustion may lead to an increase in the thermal load of the equipment, which places higher requirements on the material and structural safety of the combustion equipment.

[0004] In addition, the stability and shape control of the flame during the combustion process are also the key to improving combustion efficiency and reducing emissions. Full DC control technology controls the shape of the flame by applying an electric field to optimize the combustion process. This technology can effectively suppress the swing and spread of the flame, but requires a precise electronic control system to achieve effective control of the flame shape.

[0005] However, although the separate oxygen-enriched supply or electric field control technology has made certain progress in improving combustion efficiency, there are still some limitations, such as the failure to fully optimize the complex dynamic behavior during the combustion process and the lack of flexibility in adjusting the combustion parameters. Therefore, the development of a multifunctional combustion system that integrates oxygen enrichment, full DC control, magnetization treatment, catalysis and fine control can further improve the efficiency and environmental friendliness of natural gas combustion while ensuring the operational flexibility and stability of the system, which is an important direction for the development of technology in this field. The present invention aims to solve the above problems and achieve comprehensive optimization of the natural gas combustion process by combining the advantages of multiple technologies. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a full direct flow oxygen-enriched combustion system for natural gas, which solves the problems of low efficiency and high emission of environmental pollutants in traditional natural gas combustion systems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A full direct flow oxygen-enriched combustion system for natural gas, comprising:

[0008] An oxygen-enriched supply module, which is used to provide oxygen-enriched gas;

[0009] A full DC control module, which is used to control the combustion process through a DC electric field;

[0010] A magnetization processing module, which is used to perform magnetization processing on natural gas;

[0011] a catalytic module containing a catalyst to promote combustion of natural gas;

[0012] A fine control module, which includes sensors and an AI-based control unit, is used to monitor and adjust combustion parameters in real time.

[0013] Preferably, the oxygen-enriched supply module is equipped with a compression swing adsorption device.

[0014] Preferably, the oxygen-enriched supply module can adjust the flow rate of oxygen, specifically controlled by the following formula:

[0015]

[0016] Among them, α is the preset ratio of oxygen to natural gas, Q NG is the natural gas flow rate.

[0017] Preferably, the electric field strength E of the full DC control module is adjustable and is calculated by the following formula:

[0018]

[0019] Here, V is the voltage applied between the electrodes and d is the distance between the electrodes.

[0020] Preferably, the magnetic field strength B of the magnetization processing module is adjustable, which is specifically calculated by the following formula:

[0021]

[0022] Where N is the number of coil turns, I is the current, and L is the coil length.

[0023] Preferably, the catalyst in the catalytic module uses palladium and platinum.

[0024] Preferably, the reaction rate r of the catalyst satisfies the following formula:

[0025]

[0026] Where k is the rate constant, E a is the activation energy, R is the gas constant, T is the temperature, and A is the catalyst surface area.

[0027] Preferably, the control unit of the fine control module uses feedback control logic, including proportional, integral and differential control parameters.

[0028] Preferably, the sensors in the fine control module are used to monitor temperature, pressure and oxygen concentration parameters.

[0029] The present invention provides a full direct flow oxygen-enriched combustion system for natural gas, which has the following beneficial effects:

[0030] 1. The present invention adopts an oxygen-enriched supply module. The system uses oxygen-enriched technology to improve combustion efficiency. The increase in oxygen concentration directly increases the combustion temperature and flame intensity, making the combustion more complete, thereby significantly improving the output efficiency of thermal energy and reducing fuel consumption.

[0031] 2. The present invention effectively reduces the emission of harmful gases through the combined action of the magnetization treatment module and the catalytic module. The magnetization treatment improves the reactivity of the fuel and enhances the integrity of combustion, thereby reducing the harmful substances released by incompletely burned fuel. At the same time, the catalytic module promotes more complete combustion at a lower temperature, further reducing the emission of nitrogen oxides and hydrocarbons, which is of great significance to environmental protection.

[0032] 3. The present invention optimizes the stability and shape of the flame by applying a DC electric field. This control technology can suppress the diffusion and swing of the flame and maintain the concentration and stability of the flame during the combustion process. This stability not only improves the combustion efficiency, but also reduces the thermal efficiency loss and equipment wear caused by flame instability, thereby extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a system flow chart of the present invention. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. 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 creative work are within the scope of protection of the present invention.

[0035] Please see attached Figure 1 The embodiment of the present invention provides a full direct flow oxygen-enriched combustion system for natural gas, comprising:

[0036] An oxygen-enriched supply module, which is used to provide oxygen-enriched gas;

[0037] A full DC control module, which is used to control the combustion process through a DC electric field;

[0038] A magnetization processing module, which is used to perform magnetization processing on natural gas;

[0039] a catalytic module containing a catalyst to promote combustion of natural gas;

[0040] A fine control module, which includes sensors and an AI-based control unit, is used to monitor and adjust combustion parameters in real time.

[0041] Specifically, the system aims to improve combustion efficiency and reduce environmental pollution while improving the flexibility and safety of the system by integrating advanced technologies such as oxygen-enriched supply, full DC control, magnetization treatment, catalysis and fine control. The oxygen-enriched supply module in the system uses compression swing adsorption technology (PSA) to extract oxygen with a purity of more than 95% from the air, and optimizes the combustion reaction by precisely controlling the mixing ratio of oxygen and natural gas. The full DC control module uses a stable DC electric field generated by a high-voltage DC power supply to effectively control the flame morphology and stability. The module generates the required electric field through the voltage and distance applied by the electrodes. The magnetization treatment module magnetizes the natural gas through a magnetic field generator before it flows into the combustion chamber. This treatment improves the molecular arrangement of the natural gas and enhances the reaction activity with oxygen. The palladium or platinum catalyst used in the catalytic module reduces the activation energy and accelerates the reaction process. Finally, the fine control module includes sensors and an AI-based control unit to monitor and adjust combustion parameters in real time, using PID control logic. To fine-tune the system, the integration of these modules not only optimizes the combustion process, but also improves energy efficiency and environmental performance, providing a new technical solution for the development of industrial combustion systems.

[0042] The oxygen-enriched supply module is equipped with a compression swing adsorption device;

[0043] The oxygen enrichment supply module can adjust the flow of oxygen, which is specifically controlled by the following formula:

[0044]

[0045] Among them, α is the preset ratio of oxygen to natural gas, Q NG is the natural gas flow rate.

[0046] Specifically, the oxygen-rich supply module extracts oxygen from the air through compression swing adsorption technology. This technology uses the characteristics of the adsorbent to adsorb nitrogen in the air under high pressure, and then releases the nitrogen under low pressure to obtain high-purity oxygen. By increasing the purity of oxygen used for combustion, this module can significantly increase combustion temperature and efficiency, while reducing the generation of harmful gases such as nitrogen oxides caused by nitrogen, thereby achieving a more environmentally friendly combustion process.

[0047] The electric field strength E of the full DC control module is adjustable and is calculated by the following formula:

[0048]

[0049] Here, V is the voltage applied between the electrodes and d is the distance between the electrodes.

[0050] Specifically, the full DC control module generates a DC electric field by installing electrodes at the entrance of the combustion chamber and applying a DC voltage. This electric field affects the charged particles (mainly ions and electrons) in the combustion zone, thereby regulating the shape and stability of the flame. The DC electric field helps stabilize the flame, reduce the flickering and deviation of the flame, and improve the combustion efficiency. At the same time, this control method can achieve more detailed control in the adjustment of flame shape, optimize the combustion process, and reduce carbon emissions caused by incomplete combustion.

[0051] The magnetic field strength B of the magnetization processing module is adjustable, and is specifically calculated by the following formula:

[0052]

[0053] Where N is the number of coil turns, I is the current, and L is the coil length.

[0054] Specifically, the magnetization processing module magnetizes the natural gas by setting a magnetic field generator on the natural gas flow path. This treatment changes the electronic arrangement and reaction kinetics of the gas molecules, making it easier to react with oxygen. Magnetized natural gas can enhance its reactivity with oxygen, thereby improving the completeness of combustion and reducing fuel consumption. In addition, the improved combustion efficiency also further reduces the emission of harmful gases, especially CO and HC.

[0055] The catalyst module uses palladium and platinum as catalyst;

[0056] The reaction rate r of the catalyst satisfies the following formula:

[0057]

[0058] Where k is the rate constant, E a is the activation energy, R is the gas constant, T is the temperature, and A is the catalyst surface area.

[0059] Specifically, the catalytic module catalyzes the chemical reaction of natural gas and oxygen in the combustion chamber by introducing catalysts such as palladium or platinum. The catalyst reduces the activation energy of the reaction, thereby achieving high-efficiency combustion at a lower temperature. The use of catalysts can significantly accelerate the combustion reaction rate, improve heat output efficiency, and achieve clean combustion at a lower temperature. This low-temperature combustion technology helps to reduce the generation of NOx while ensuring the completeness of combustion and reducing the emission of carbon black and other unburned carbon.

[0060] The control unit of the fine control module uses feedback control logic, including proportional, integral, and differential control parameters;

[0061] Sensors in the fine control module monitor temperature, pressure and oxygen concentration parameters.

[0062] Specifically, the fine control module includes multiple sensors and an AI-based control unit for real-time monitoring of combustion parameters. By collecting this data, the AI ​​control unit can adjust the gas supply ratio, electric field strength, etc. to optimize the combustion conditions. The module can adjust the combustion parameters in real time and adapt to different operating conditions, thereby ensuring that the combustion process is always in the best state. This intelligent control method not only improves combustion efficiency, but also reduces system failures and extends equipment life through predictive maintenance.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A full direct flow oxygen-enriched combustion system for natural gas, characterized in that: include: An oxygen-enriched supply module, which is used to provide oxygen-enriched gas; A full DC control module, which is used to control the combustion process through a DC electric field; A magnetization processing module, which is used to perform magnetization processing on natural gas; a catalytic module containing a catalyst to promote combustion of natural gas; A fine control module, which includes sensors and an AI-based control unit, is used to monitor and adjust combustion parameters in real time.

2. A full direct flow oxygen-enriched combustion system for natural gas according to claim 1, characterized in that: The oxygen-enriched supply module is equipped with a compression swing adsorption device.

3. A full direct flow oxygen-enriched combustion system for natural gas according to claim 1, characterized in that: The oxygen-enriched supply module can adjust the flow rate of oxygen, which is specifically controlled by the following formula: Among them, α is the preset ratio of oxygen to natural gas, Q NG is the natural gas flow rate.

4. A full direct flow oxygen-enriched combustion system for natural gas according to claim 1, characterized in that: The electric field strength E of the full DC control module is adjustable and is calculated by the following formula: Here, V is the voltage applied between the electrodes and d is the distance between the electrodes.

5. A full direct flow oxygen-enriched combustion system for natural gas according to claim 1, characterized in that: The magnetic field strength B of the magnetization processing module is adjustable, and is specifically calculated by the following formula: Where N is the number of coil turns, I is the current, and L is the coil length.

6. A full direct flow oxygen-enriched combustion system for natural gas according to claim 1, characterized in that: The catalyst in the catalytic module uses palladium and platinum.

7. A full direct flow oxygen-enriched combustion system for natural gas according to claim 1, characterized in that: The reaction rate r of the catalyst satisfies the following formula: Where k is the rate constant, E a is the activation energy, R is the gas constant, T is the temperature, and A is the catalyst surface area.

8. A full direct flow oxygen-enriched combustion system for natural gas according to claim 1, characterized in that: The control unit in the fine control module uses feedback control logic, including proportional, integral and differential control parameters.

9. A full direct flow oxygen-enriched combustion system for natural gas according to claim 1, characterized in that: Sensors in the fine control module are used to monitor temperature, pressure and oxygen concentration parameters.

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