Regeneration energy manufacturing system

Abstract

To economically stably obtain regeneration energy of organic waste methane gas and so on, and electric power without using a fossil fuel.SOLUTION: For waste plastic, scrap tire, crude oil sludge that are organic wastes and a large amount of unused vegetables and sludge from agriculture, combination of molecules of organic waste is converted into gas, char and oil. In this case, high temperature is generated by a thermal decomposition reaction furnace from energy of the organic waste without using a fossil fuel, thermal decomposition is performed in a batch system in another thermal decomposition reaction furnace using heat thereof, and the organic waste is converted into natural gas and regeneration energy, thereby providing means that performs effective utilization of organic waste resource and solves the problem. Since a fossil fuel is not used for this solution, the means significantly contributes to improvements in global environment.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] Methane gas is the main component of natural gas, which has existed in abundance underground since ancient times. Recently, it has been attracting attention due to calls for the suppression of carbon dioxide emissions. This gas is an essential heat source for social life, including power generation, cooking, and raising the temperature of hot springs. Meanwhile, the disposal of petroleum-related materials, such as waste plastic, used car tires, and sludge remaining in tanks after crude oil transport, as well as animal waste (e.g., cow, pig, and chicken), food waste, and biomass organic waste from agriculture and forestry, are becoming major global environmental issues. This technology not only deals with the disposal of these materials, but also involves utilizing them as energy resources to generate renewable energy. [Background technology]

[0002] Incinerator technology, which processes organic waste by burning it using heat from fossil fuels such as heavy oil, is widely used. Thermal power generation using coal, heavy oil, and biomass fuels is also widely used around the world. Various technologies have been developed to reduce the cost of generating electricity per unit of electricity. Furthermore, biomass pellets are used to reduce carbon dioxide emissions as a measure against global warming, and technology is being used to mix them with coal and burn them.

[0003] In developing countries, the disposal of large amounts of organic waste from cities is a major issue. Tropical and subtropical countries also face challenges with agricultural waste, including waste from harvesting tropical plants like coconuts, sugarcane, and palm trees, as well as animal waste from cows, pigs, and chickens. Meanwhile, developing countries face shortages of electricity and fuel gas, creating a need for the utilization of the vast amounts of organic waste and biomass resources they produce to generate methane gas and electricity. While established technologies exist for generating electricity, such as by rotting organic waste to produce methane gas and using that gas to drive turbine generators, or by using high-pressure steam generated by hydrolyzing waste to drive turbine generators, their poor cost performance makes widespread adoption difficult.

[0004] Recently, a technology for processing wood from wooden houses demolished in disasters such as earthquakes, discarded wood from forests and mountains, used plastic (waste plastic), agricultural waste, and hospital waste through pyrolysis and gasification without using heavy oil has been put into practical use not only in Japan but also in Indonesia, the Philippines, India, Nepal, and other countries. In Japan, a large amount of thin plastic made from petroleum, known as mulch, is used to improve agricultural efficiency, and there are problems with disposing of it after it has reached its end of life. Other problems include the disposal of used car tires and crude oil sludge transported by tanker. All of these materials, which were created by humans in the 20th century and did not exist in nature, are damaging the global environment. DISCLOSURE OF THE INVENTION The problem that the invention is trying to solve

[0005] In Japan, the technology for incinerators that use heavy oil is well developed, and large amounts of organic waste generated by urban homes and shops are treated in large incineration facilities. However, the cost of incinerators is very high, and developing countries in Asia and Africa find it extremely difficult to adopt incinerators to treat waste, and they are struggling to treat the vast amounts of organic waste they generate. In developing countries that produce electricity, this organic waste accumulates like small mountains near cities, and is becoming a major social problem as one of the root causes of environmental pollution. If trucks were used to transport the organic waste for treatment, a large number of trucks would be required, and the increase in carbon dioxide gases emitted from the fuel would pose a major issue that worsens global relations. To solve these problems, a system is installed on-site at sites where large amounts of organic waste have accumulated, and without the need for external energy, converts the organic waste's own energy into thermal energy obtained through pyrolysis, which is then used to treat the organic waste. By treating organic waste, the global environment can be improved, and furthermore, renewable energy such as natural gas and diesel oil for diesel engines can be produced from the organic waste, thereby solving social problems. Means for solving the problems

[0006] The target organic waste, such as old, processed tires, waste plastic, sludge, wood, cow manure, and chicken droppings, is placed in an oxygen-free pyrolysis reactor, and heat from a separate pyrolysis reactor for treating organic waste, such as municipal solid waste, is used to produce renewable energy from the organic waste. The latter pyrolysis reactor is initially started using a biomass burner, rather than fossil fuels, to ignite and heat the interior of the reactor until the temperature inside the reactor reaches the point where pyrolysis begins. Once pyrolysis begins, high-temperature water gas is generated, and the heat generated continues the pyrolysis, converting the organic waste into high-temperature water gas. A small amount of residue, about 3%, is produced and used as a raw material for concrete and block production, but most of it is converted into water gas and used as heat. This heat is then used in another pyrolysis reactor to convert other organic waste into renewable energy.

[0007] The water gas generated is nearly 800 degrees Celsius and is temporarily stored in a heat storage tank to suppress the generation of harmful gases such as dioxins. This high-temperature water gas is then used as a heat source for a separate pyrolysis furnace connected to the furnace for the purpose of renewable energy conversion. The biogas generated in this latter pyrolysis furnace is cooled in a steam reactor connected to the furnace, then passes through a calcinator to remove sulfur and nitrogen components, before being stored in a gas tank.

[0008] When the organic waste resources used to produce renewable energy are petroleum-based, approximately 80% of the output from the pyrolysis reactor is diesel oil, the remaining 15% is biogas, and the remaining 5% is silica, etc., which can all be used as renewable energy resources for industry.

[0009] This invention gasifies the vast amount of organic waste generated daily in cities and heats it to high temperatures, preventing the generation of harmful substances such as dioxins. By converting the gas into high-temperature thermal energy, it cleans the urban environment. At the same time, this thermal energy is used to convert abundant, underutilized biomass resources, such as agricultural, forestry, and livestock waste, into biomass-derived methane gas, a resource that contributes to improving the global environment. This can be used for automobile fuel, diesel generators, and boilers to raise the temperature of hot springs. This high-calorie fuel can also be used in boiler-turbine power plants that previously used coal to generate electricity. In other words, this process converts organic waste into renewable energy sources such as diesel oil and methane gas. The process of generating the raw biomass resources counts as carbon credits, contributing to the reduction of carbon dioxide emissions as a measure against global warming. BEST MODE FOR CARRYING OUT THE INVENTION

[0010] An embodiment of the present invention will be described below with reference to FIG.

[0011] Figure 1 shows the overall system configuration of the present invention. Organic waste is first loaded into a hopper (1), transported by a conveyor (2), and then fed into a pyrolysis reactor (6) via an autofeeder (5). Biomass material, used to heat the pyrolysis reactor, is first loaded into a hopper (3) and burned by a biomass burner (4), raising the temperature inside the pyrolysis reactor (6) until it reaches the temperature at which pyrolysis begins. Once the temperature reaches approximately 300°C, at which pyrolysis begins and the pyrolysis reaction stabilizes, the biomass burner function becomes unnecessary. The high-temperature water gas generated by pyrolysis is then fed back to the pyrolysis reactor from the output and used as heat for pyrolysis. The organic waste loaded into the pyrolysis reactor (6) is thermally decomposed and converted into water gas. Specifically, the carbon (C) and water (H2O) contained in the organic matter are converted into water gas (a synthesis gas of hydrogen and carbon monoxide) through pyrolysis. The molecular formula is C + H2O = H2 + CO. The gas is at a high temperature, and this heat is used as radiant heat to cause pyrolysis in another pyrolysis reactor (7) connected next. Organic waste, which is the raw material for renewable energy, is fed into this pyrolysis reactor (7) by a vacuum suction machine and conveyor (11). This is a batch type, and is controlled by a control program for a certain period of time. The controlled discharge varies depending on the organic waste fed and the control program, and the output is obtained as renewable energy such as diesel oil or biogas depending on the type of organic waste fed into this pyrolysis reactor.

[0012] When the organic waste fed into the pyrolysis furnace (7) is petrochemical waste such as plastics or tires, it is thermally decomposed in batches, and the output is not gas but an ash-like substance containing tar. Diesel oil is accumulated in an oil tank (17) via a tar separator (15) and a cooling condenser (16). This diesel oil is fed into a diesel generator (18) to generate electricity. Through this process, the majority (about 80%) of the petroleum-based organic waste is converted into electricity as renewable energy. The remaining 15% is converted into biogas through a steam reactor (12) and a calcinator (13) and stored in a gas tank (14).

[0013] When the organic waste fed into the pyrolysis furnace (7) is plant or animal biomass, it is pyrolyzed by radiant heat to produce biogas, which is then cooled in the connected steam reactor, passes through a calcinator (13) to remove sulfur and nitrogen components, and is then stored in a gas tank (14).

[0014] Developing countries in Southeast Asia, South Asia, and Africa are facing difficulties in disposing of the vast amounts of organic waste caused by rapid population growth. These regions also have abundant tropical and subtropical plant life, providing ample biomass resources. In India, for religious reasons, a large amount of cow dung is also used as a biomass resource, and its disposal is also an issue. On the other hand, these countries are facing a severe shortage of electricity due to population growth and industrial development. Furthermore, reducing carbon dioxide emissions is currently a major issue as a measure against global warming. Therefore, a new industry called carbon credit trading between developed and developing countries is gaining attention. This invention will enable developing countries to process huge amounts of urban waste and provide fuel for power generation that is effective for carbon credits. It will also be possible to trade with developed countries, contributing to the industrial development of each country and being of great help in solving various issues. [Brief explanation of the drawings]

[0015] [Figure 1] Figure 1 shows the overall system configuration for producing renewable energy resources from organic waste, which is a separately prepared resource, by utilizing heat generated during the treatment of organic waste such as municipal waste. [Explanation of symbols]

[0016] [Figure 1] 1. Hopper for accumulating municipal waste (organic waste) Conveyor for transporting organic waste as described in 2.1 3. Hopper for accumulating woody biomass 4.Biomass burner 5.Auto Feeder 6. Pyrolysis reactor Batch pyrolysis reactor that uses heat from the pyrolysis furnace in Section 7.6 as radiant heat 8. Heat-insulating walls 9. Hot air accumulation areas surrounding the pyrolysis reactor 10. Materials that store the radiant heat required for pyrolysis reactions 11. Conveyor that sucks organic waste and feeds it into the pyrolysis reactor 12. Steam reactor 13. Calcinator 14. Gas Tank 15. Diesel oil recovery and tar separation equipment 16. Cooling condenser 17. Diesel oil storage tank 18. Diesel generator,

Claims

[Claim 1] A renewable energy production system that is characterized by being composed of a device that places organic waste resources in a hopper at a site where the resources are accumulated and transports them on a conveyor, a reactor that gasifies the transported resources through a thermal decomposition reaction to generate water gas, a batch-type pyrolysis reactor that converts other organic waste resources into renewable energy resources using the water gas generated in the reactor as a heat source, a device that accumulates other organic waste and transports it to the batch-type pyrolysis reactor, and a device that accumulates the renewable energy generated in the pyrolysis reactor, and is installed on site where organic waste is stored to generate renewable energy without using external energy at the site where the organic waste is stored, using the self-generated thermal energy emitted by the organic waste, without using external fossil fuels.

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