Distribution type kitchen fuel replacement system and method

Abstract

The invention discloses a distribution type kitchen fuel replacement system and method. The distribution type kitchen fuel replacement system comprises a liquid ammonia tank, a main electromagnetic valve, an electromagnetic valve, a plasma generation device, a combustion head, an air blower, a deeply-buried cooking range, a suction ventilator, a tail gas NOx centralized treatment device and the like. The liquid ammonia tank provides fuel for the area where the liquid ammonia tank is located through liquid ammonia, the fuel is distributed to the terminal users after being controlled through the main electromagnetic valve, an electromagnetic valve is installed in each terminal user for user side use control, and the fuel passes through the plasma after being controlled through the electromagnetic valves and then enters the combustion head to be subjected to combustion reaction with air generated by the air blower. High-temperature flue gas generated by fuel combustion directly heats kitchen ware in the deep-buried cooking range, the food processing function is achieved, and the high-temperature flue gas is taken away by the suction fan after heating the kitchen ware and enters the tail gas NOx centralized processing device. The system has the advantages of zero carbon emission, high efficiency, easy expansion and the like, and is suitable for application scenes such as residential areas and restaurants.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy application, and in particular relates to a distributed cooking fuel replacement system and method. Background Art

[0002] The massive emission of greenhouse gases, such as carbon dioxide, has already had a significant impact on our living environment. The depletion of non-renewable fossil fuels, such as coal, oil, and natural gas, has also led to unprecedented energy shortages and environmental pollution worldwide. Low-carbon and renewable energy have become inevitable trends in energy development and application, as well as in energy conservation and emission reduction. For example, non-polluting renewable energy sources such as photovoltaics, wind power, and tidal power are key. However, photovoltaics, wind power, and tidal power are regionally and seasonally oriented, and unstable power supply and lack of direct access to the grid have severely limited their rapid development. Research is underway both domestically and internationally on converting unstable electricity into energy storage media such as hydrogen, ammonia, and methanol. Ammonia, with its potential for long-term storage and transport and zero carbon emissions, has received increasing attention. According to the Intergovernmental Panel on Climate Change (IPCC), traditional gas kitchens emit approximately 0.25 kg of carbon dioxide per person per meal, while all-electric kitchens emit 0.19 kg per person. This suggests that national kitchen emissions total 240-300 million tons of carbon dioxide per year, accounting for 2.4-4% of national carbon dioxide emissions. Summary of the Invention

[0003] In order to reduce carbon dioxide emissions caused by the use of gas in home or hotel kitchens, the present invention provides a distributed kitchen fuel replacement system and method, aiming to overcome the shortcomings and deficiencies of existing fuels and systems. The present invention provides a distributed kitchen fuel replacement system and method, which uses ammonia fuel to replace natural gas, which is easy to store and transport, and uses plasma to make the ammonia fuel more flammable, effectively solving the problems of difficult ignition and continuous combustion of ammonia. It has a short start-up time, high combustion stability and burnout rate, and significantly reduces carbon dioxide emissions.

[0004] The technical solution adopted by the invention to solve its technical problem is: A distributed kitchen fuel replacement system comprises a liquid ammonia tank, a main solenoid valve, a solenoid valve, a plasma generator, a burner head, a blower, a deep-buried stove, a suction fan, and a centralized exhaust NOx treatment device. The liquid ammonia tank is connected to each end user via the main solenoid valve. The end user's equipment comprises a solenoid valve, a plasma generator, a burner head, a blower, a deep-buried stove, and a suction fan. The plasma generator is connected to the main solenoid valve via a solenoid valve. The burner head, blower, deep-buried stove, and suction fan cooperate to serve as combustion reaction equipment. The burner head is used to collect combustion flames, the blower is used to generate air, the deep-buried stove is used to support the combustion reaction, and the suction fan is used to collect high-temperature flue gas generated by the combustion reaction. The suction fan of each end user is connected to the centralized exhaust NOx treatment device.

[0005] Furthermore, the plasma generating device is arc plasma, microwave plasma, DBD plasma, corona discharge plasma or rotating arc plasma.

[0006] Furthermore, the plasma generating device has continuous output or pulse controlled output.

[0007] Furthermore, the number of the plasma generating devices is single or in a group of 2-100, and the number of starting devices is controlled according to actual needs.

[0008] Furthermore, the combustion head adopts an air-staged combustion organization mode.

[0009] Furthermore, the blower is a centrifugal blower, a screw blower, a vortex blower or a reciprocating blower, and the wind speed of the blower is adjusted by a controller.

[0010] Furthermore, the exhaust gas NOx centralized treatment device is an SCR treatment device or uses excess air for treatment to reduce NOx to meet emission standards.

[0011] A method for dispensing cooking fuel alternatives, the method comprising: The liquid ammonia tank is distributed to the end user through the main solenoid valve, and the end user installs the solenoid valve to control user-end use. The fuel is controlled by the solenoid valve and passes through the plasma, and then enters the combustion head to react with the air generated by the blower to generate high-temperature flue gas to heat the kitchen utensils in the deep-buried stove. After heating the kitchen utensils, the high-temperature flue gas is taken away by the suction fan and enters the exhaust gas NOx centralized treatment device.

[0012] Beneficial effects: 1. Use ammonia fuel to replace fossil fuels such as natural gas, thereby reducing carbon dioxide emissions in living areas or concentrated living areas; 2. Use plasma technology to achieve rapid ignition and combustion of ammonia fuel; 3. Use the principle of staged combustion to achieve effective control of NOx during combustion; 4. Use a centralized SCR system to treat NOx in exhaust gas from boilers in the area to reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of ammonia fuel distribution and use in the region. DETAILED DESCRIPTION

[0014] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the protection scope of the present invention is not limited to the following embodiment.

[0015] The invention will be described in further detail below with reference to the accompanying drawings.

[0016] Reference Figure 1 As shown, the present invention discloses a distributed cooking fuel replacement system and method. The system includes a liquid ammonia tank, a main solenoid valve, a solenoid valve, a plasma generator, a burner head, a blower, a deep-buried stove, a suction fan, or a centralized exhaust NOx treatment device. The liquid ammonia tank is distributed to end users through the main solenoid valve. The end user installs the solenoid valve to control user-end use. The fuel is controlled by the solenoid valve and then passes through the plasma. It then enters the burner head and reacts with the air generated by the blower to generate high-temperature flue gas to heat the kitchen utensils in the deep-buried stove. After heating the kitchen utensils, the high-temperature flue gas is carried away by the suction fan and enters the centralized exhaust NOx treatment device. The plasma generating device may be arc plasma, microwave plasma, DBD plasma, corona discharge plasma, rotating arc plasma, etc. The plasma generating device may be continuous output or pulse controlled output. The number of the plasma generating devices may be single or in a group of 2-100, and the number of starting devices may be controlled according to actual needs. The combustion head adopts an air staged combustion organization mode; The blower can be a centrifugal blower, a screw blower, a vortex blower, a reciprocating blower, etc., and the blower has its wind speed adjusted by a controller; The exhaust gas NOx centralized treatment device may be an SCR treatment device, or may use excess air for treatment to reduce NOx to meet emission standards.

[0017] The use of the above-mentioned technical solutions will help to replace fossil energy such as natural gas with ammonia fuel, and achieve carbon dioxide emission reduction in living areas or concentrated living areas; use plasma technology to achieve rapid ignition and combustion of ammonia fuel; use the principle of staged combustion to achieve effective control of NOx during the combustion process; use a centralized SCR system to treat NOx in the exhaust gas of boilers in the area, thereby reducing construction costs.

[0018] The above embodiments are merely illustrative of the principles and effects of the invention, as well as some embodiments of its application. For ordinary technicians in this field, several variations and improvements can be made without departing from the creative concept of the invention, which all fall within the scope of protection of the invention.

Claims

1. A distributed cooking fuel replacement system, characterized in that: The system includes a liquid ammonia tank, a main solenoid valve, a solenoid valve, a plasma generator, a burner head, a blower, a deep-buried stove, a suction fan and a centralized exhaust NOx treatment device. The liquid ammonia tank is connected to each terminal user through the main solenoid valve. The equipment of the terminal user includes a solenoid valve, a plasma generator, a burner head, a blower, a deep-buried stove and a suction fan. The plasma generator is connected to the main solenoid valve through a solenoid valve. The burner head, the blower, the deep-buried stove and the suction fan cooperate as equipment for combustion reaction. The burner head is used to collect combustion flames, the blower is used to generate air, the deep-buried stove is used to support the combustion reaction equipment, the suction fan is used to collect high-temperature flue gas generated by the combustion reaction, and the suction fans of each terminal user are connected to the centralized exhaust NOx treatment device.

2. A dispensing cooking fuel replacement system according to claim 1, characterized in that: The plasma generating device is arc plasma, microwave plasma, DBD plasma, corona discharge plasma or rotating arc plasma.

3. A dispensing cooking fuel replacement system according to claim 1, characterized in that: The plasma generating device has continuous output or pulse controlled output.

4. A dispensing cooking fuel replacement system according to claim 1, characterized in that: The number of the plasma generating devices is one or 2-100 forming a group.

5. A dispensing cooking fuel replacement system according to claim 1, characterized in that: The combustion head is an air staged combustion organization mode.

6. A dispensing cooking fuel replacement system according to claim 1, characterized in that: The blower is a centrifugal blower, a screw blower, a vortex blower or a reciprocating blower.

7. A dispensing cooking fuel replacement system according to claim 1, characterized in that: The exhaust NOx centralized treatment device is an SCR treatment device or uses excess air for treatment to reduce NOx to meet emission standards.

8. A distributed cooking fuel replacement method, characterized in that: The liquid ammonia tank is distributed to the end user through the main solenoid valve, and the end user installs the solenoid valve to control the user's use. The fuel is controlled by the solenoid valve and passes through the plasma, and then enters the combustion head to react with the air generated by the blower to generate high-temperature flue gas to heat the kitchen utensils in the deep-buried stove. After heating the kitchen utensils, the high-temperature flue gas is taken away by the suction fan and enters the exhaust gas NOx centralized treatment device.

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