Bio-petroleum production method and production system which use sewage sludge and livestock manure

Abstract

The present invention relates to a bio-petroleum production method and production system which use sewage sludge and livestock manure, and which constitute new innovative technology using sewage sludge and livestock manure to produce bio-char, and using the bio-char as a coal substitute so that waste management and sustainable energy production are possible, have various environmental advantages such as carbon reduction, soil improvement and water purification, and apply the technologies of effectively treating waste and producing bio-char, and thus can indirectly reduce carbon emissions and ensure incentives according to carbon credits.

Description

Bio-oil production method and production system using sewage sludge and livestock manure

[0001] The present invention relates to a method and a production system for bio-oil using sewage sludge and livestock manure, and more specifically, to a method and a production system for bio-oil using sewage sludge and livestock manure, which produces biochar using sewage sludge and livestock manure and uses the biochar as a coal substitute, thereby providing various environmental benefits such as carbon reduction, soil improvement, and water purification, and which can indirectly reduce carbon emissions by effectively treating waste and applying a technology for producing biochar, and which can secure incentives according to carbon emission rights.

[0002] Greenhouse gases from fuels such as coal, oil, and natural gas generally have a major impact on the greenhouse effect.

[0003] Greenhouse gases from agriculture and land use, particularly carbon dioxide (CO2), are estimated to account for approximately 20% of total greenhouse gas emissions.

[0004] In a situation where high oil prices and the need to address climate change under the Kyoto Protocol are urgent, interest in waste resources and biomass energy is increasing to produce low-cost new and renewable energy, generate early results, and reduce greenhouse gases. As part of this, each country is promoting livestock manure resource utilization, agricultural biomass energy and biodiesel production, fisheries and marine biomass energy, and forest biomass energy.

[0005] Carbonization is a pyrolysis process that is carried out in an oxygen-free environment by indirect heating (endothermic) by an external heating source to fix carbon among organic components to the final product through a reduction reaction. When organic matter is pyrolyzed in an oxygen-free environment, the final products include pyrolysis gas, pyrolysis oil, and char. When the goal is pyrolysis oil, it is called 'oilization', and when the goal is char, it is called 'carbonization'.

[0006] In addition, carbonized biomass is thermally decomposed at 200-300℃ to decompose hemicellulose, a hygroscopic component, thereby reducing hydroxyl radicals and reducing hygroscopicity, and by removing volatile organic compounds and recycling them as an energy source in the process, it reduces the manufacturing cost compared to wood pellets, while increasing the carbon ratio and converting it into an energy source closer to the characteristics of coal. It is called biochar or bio-coal.

[0007] Biochar is a compound word of biomass and charcoal, and is a high-carbon solid produced by thermal decomposition of biomass in an oxygen-free environment.

[0008] When biomass is heated to a high temperature in an oxygen-limited environment, it burns but does not combust. This phenomenon is called pyrolysis, and biochar is produced when biomass goes through this pyrolysis process.

[0009] Biochar, with its porous structure and neutral pH, promotes microbial growth and is highly effective in improving soil fertility. Applying biochar to soil improves soil fertility by preventing acidification or alkalinization. It also captures carbon from the air, effectively reducing greenhouse gases.

[0010] Biochar is known to increase agricultural yields by adsorbing and leaching nutrients from soil and ensuring the stability of microbial communities. It is also used as a catalyst, adsorbent, and various energy storage materials.

[0011] Conventional biochar manufacturing processes utilize biomass to crush or grind the raw materials into chips (e.g., wood chips) or particles (e.g., sawdust) and then feed them into the pyrolysis process. These raw materials vary greatly in shape, size, and moisture content. Therefore, when subjected to a pyrolysis process under specific conditions (e.g., constant temperature and processing time), the degree of pyrolysis varies significantly, resulting in significant differences in the quality of each biochar particle or chip.

[0012] Therefore, new technologies for recycling livestock manure and converting agricultural biomass into energy are urgently needed.

[0013] The present invention was invented to improve the above-mentioned problems, and the first problem to be solved by the present invention is to provide a method and production system for bio-oil production using sewage sludge and livestock manure, which is an innovative new technology that enables waste management and sustainable energy production by producing biochar using sewage sludge and livestock manure and using the biochar as a coal substitute, and has various environmental benefits such as carbon reduction, soil improvement, and water purification.

[0014]

[0015] The second problem that the present invention seeks to solve is to provide a method and production system for bio-oil production using sewage sludge and livestock manure, which can indirectly reduce carbon emissions and secure incentives based on carbon emission rights by applying technology for effectively treating waste and producing biochar.

[0016]

[0017] The third problem that the present invention seeks to solve is to provide a method and production system for producing bio-oil using sewage sludge and livestock manure, which have a carbon reduction effect in biochar production, and carbon stably stored in biochar can contribute to lowering the concentration of carbon dioxide in the atmosphere.

[0018]

[0019] The fourth problem to be solved by the present invention is to provide a method and production system for bio-oil production using sewage sludge and livestock manure, which can reduce methane emissions from organic waste through a pyrolysis process and promote carbon absorption by improving the physical and chemical properties of soil with biochar.

[0020] In order to achieve the above object, the method for producing bio-oil using sewage sludge and livestock manure according to the present invention has the technical features comprising: a first step of feeding sewage sludge and livestock manure into a supply hopper; a second step of stirring the sewage sludge and livestock manure to form a mixture; a third step of drying the mixture; a fourth step of pyrolyzing the dried mixture to produce biochar; a fifth step of reacting the biochar with oxygen and steam at a high temperature to produce synthesis gas; a sixth step of adding hydrogen to the produced synthesis gas to increase the hydrogen concentration; and a seventh step of converting the synthesis gas (CO+H2) into liquefied hydrocarbon using a catalyst through a Fischer-Tropsch synthesis reaction.

[0021] In addition, in the pyrolysis process of the fourth step, the dried mixture is produced as biochar by applying a rotary kiln type semi-carbonization reactor through pyrolysis using indirect heat.

[0022] Additionally, the synthesis gas produced in the fifth step contains hydrogen, carbon monoxide, and steam.

[0023] The catalyst for the above Fischer-Tropsch Synthesis reaction process may be a cobalt-based catalyst or an iron-based catalyst.

[0024] In addition, the catalyst for the Fischer-Tropsch reaction process includes an iron (Fe) compound as an active material, sodium (Na) and sodium hydroxide (NaOH) as cocatalysts, and a carrier.

[0025] In addition, in the case of an iron-based catalyst in the above Fischer-Tropsch synthesis reaction, depending on the basicity of the catalyst surface, the carbon and iron atoms generated through the Buda reaction react to cause a carbide formation reaction, and the carbide formation reaction promotes chain growth of hydrocarbons, allowing the synthesis of hydrocarbon products with long chain structures.

[0026] Additionally, in the process of adding hydrogen to synthesis gas, a metal catalyst can be used to promote the reaction between methane and hydrogen.

[0027] Additionally, the metal catalyst includes a nickel catalyst, a rutinium catalyst, a palladium catalyst, and a platinum catalyst.

[0028] Additionally, in the process of adding hydrogen to synthesis gas, a catalyst combining graphene and copper can be used to promote the reaction between methane and hydrogen.

[0029] Additionally, in the process of adding hydrogen to synthesis gas, a catalyst with an enzyme added to a graphene and copper complex can be used to promote the reaction between methane and hydrogen.

[0030] Additionally, sodium (Na) and sodium hydroxide (NaOH) may be included in amounts of 5 to 20 parts by weight, respectively, per 100 parts by weight of the carrier.

[0031] When sodium (Na) and sodium hydroxide (NaOH) are less than 5 parts by weight, the effect of increasing the surface basicity due to the addition of sodium (Na) and sodium hydroxide (NaOH) is weak, and when it is more than 20 parts by weight, the surface basicity is too strong, so that a carbon deposition reaction according to the reaction formula 7 described above occurs frequently during the Fischer-Tropsch reaction, and the catalyst may be easily deactivated.

[0032] In addition, the method further includes a process of producing biochar pellets using a pellet molding machine using the biochar produced in the fourth step and a process of cooling the biochar pellets using a cooler.

[0033]

[0034] Meanwhile, a bio-oil production system utilizing sewage sludge and livestock manure according to the present invention has the technical features of including a supply hopper for inputting sewage sludge and livestock manure; a stirrer for mixing sewage sludge and livestock manure supplied through the supply hopper to create a mixture; a dryer for drying the mixture; a pyrolysis furnace for producing biochar by pyrolyzing the dried mixture; a synthesis gas generator for producing synthesis gas by reacting the biochar with oxygen and steam at high temperature; and a reactor for converting the synthesis gas (CO+H2) into liquefied hydrocarbon.

[0035] In addition, the bio-oil production system utilizing sewage sludge and livestock manure according to the present invention further includes a pellet forming machine for forming biochar produced through the pyrolysis furnace into a pellet form; and a cooler for cooling the biochar pellets.

[0036] As described above, the present invention has the following effects.

[0037] First, by producing biochar from sewage sludge and livestock manure and using the biochar as a coal substitute, it is an innovative new technology that enables waste management and sustainable energy production, and has various environmental benefits such as carbon reduction, soil improvement, and water purification.

[0038] Second, by effectively processing waste and applying technologies to produce biochar, we can indirectly reduce carbon emissions and secure incentives based on carbon credits.

[0039] Third, biochar production has a carbon reduction effect, and the carbon stably stored in biochar contributes to lowering atmospheric carbon dioxide concentrations.

[0040] Fourth, methane emissions from organic waste can be reduced through the pyrolysis process, and biochar improves the physical and chemical properties of soil, promoting carbon absorption.

[0041] Figure 1 is a schematic diagram illustrating a bio-oil production system utilizing sewage sludge and livestock manure according to a first embodiment of the present invention.

[0042] Figure 2 is a drawing for explaining the rotation means of the thermal decomposition furnace of Figure 1.

[0043] Figure 3 is a block diagram illustrating a method for producing bio-oil using sewage sludge and livestock manure according to the first embodiment of the present invention.

[0044] Figure 4 is a flow chart explaining a method for producing bio-oil using sewage sludge and livestock manure according to the first embodiment of the present invention.

[0045] Figure 5 is a schematic diagram illustrating a bio-oil production system utilizing sewage sludge and livestock manure according to a second embodiment of the present invention.

[0046] Hereinafter, with reference to the attached drawings, a method and production system for producing bio-oil using sewage sludge and livestock manure according to a preferred embodiment of the present invention will be described in detail.

[0047] FIG. 1 is a schematic diagram illustrating a bio-oil production system using sewage sludge and livestock manure according to a first embodiment of the present invention, FIG. 2 is a diagram for explaining a pyrolysis furnace rotation means of FIG. 1, FIG. 3 is a block diagram explaining a bio-oil production method using sewage sludge and livestock manure according to a first embodiment of the present invention, and FIG. 4 is a flowchart explaining a bio-oil production method using sewage sludge and livestock manure according to a first embodiment of the present invention.

[0048] Referring to FIGS. 1 to 4, a bio-oil production system utilizing sewage sludge and livestock manure according to a preferred embodiment of the present invention is a device that uses organic wastes such as sewage sludge and livestock manure (e.g., pig manure, etc.) considered as waste to produce biochar (calories of 4,000 kcal or more) or pyrolyzes the biochar to produce biochar, and ultimately converts the biochar into liquefied hydrocarbon, which is bio-oil, through a Fischer-Tropsch synthesis reaction using a catalyst.

[0049] A bio-oil production system utilizing sewage sludge and livestock manure according to a preferred embodiment of the present invention comprises: a supply hopper (110) for inputting sewage sludge and livestock manure; a mixer (120) for mixing sewage sludge and livestock manure supplied through the supply hopper (110) to create a mixture; a dryer (130) for drying the mixture; a pyrolysis furnace (140) for thermally decomposing the dried mixture to produce biochar; a synthesis gas generator (150) for reacting the biochar with oxygen and steam at high temperature to produce synthesis gas; and a reactor (160) for converting the synthesis gas (CO+H2) into liquefied hydrocarbon.

[0050] In the bio-oil production system utilizing sewage sludge and livestock manure according to the first embodiment of the present invention configured as described above, a control valve (111) for controlling the discharge amount of sewage sludge and livestock manure is installed at the lower end of the supply hopper (110).

[0051] In addition, the agitator (120) may be configured to agitate sewage sludge and livestock waste by rotating a screw (122) inside a housing (121) by the rotational force of a motor (123).

[0052] By the rotation of the screw (122), sewage sludge and livestock waste are mixed and then transferred to a collection tank (124). The mixture captured in the collection tank (124) is dried through a dryer (130).

[0053] The above dryer (130) may be composed of a heater (131) and a screw (132) for transporting the mixture.

[0054] In addition, the above pyrolysis furnace (140) produces biochar by pyrolyzing a dried mixture using indirect heat, and may be configured as a rotary kiln type semi-carbonization reactor structure.

[0055] The above pyrolysis furnace (140) is equipped with a furnace (141) having a refractory wall and a burner (142) for heating the furnace (141).

[0056] An exhaust gas line (L1) is installed on the upper side of the above-mentioned furnace (141), and a dust collector and a bag filter can be installed on the exhaust gas line (L1) to filter out odors and pollutant gases generated during the thermal decomposition process.

[0057] Furthermore, as illustrated in FIG. 2, the bio-oil production system utilizing sewage sludge and livestock manure according to the first embodiment of the present invention is equipped with a pyrolysis furnace rotation means (190).

[0058] The above-mentioned thermal decomposition furnace rotation means (190) is provided with a circular gear (191) installed on both sides of the furnace (141) and having teeth (193) formed on the outer surface thereof; and a driving gear part (192) that is engaged with the circular gear (191) and connected to the rotation shaft of the motor (193) to rotate the furnace (141) by the power of the motor (193).

[0059] Furthermore, the thermal decomposition furnace rotation means (190) may further include a support roller (194) that supports the outer surface of the furnace (141) to support the rotation of the furnace (141); and a guide rail (195) that is inserted into a guide groove (194a) of the support roller (194) and formed along the outer surface of the furnace (141) to prevent left-right movement of the furnace (141).

[0060] In addition, the above-mentioned synthesis gas generator (150) produces synthesis gas by reacting biochar produced through a thermal decomposition reaction with oxygen and steam at high temperature.

[0061] Additionally, the reactor (160) converts the synthesis gas (CO+H2) into liquefied hydrocarbon.

[0062] Furthermore, the bio-oil production system utilizing sewage sludge and livestock manure according to the first embodiment of the present invention may further include a pellet forming machine (170) for forming biochar produced through a pyrolysis furnace (140) into a pellet form; and a cooler (180) for cooling the biochar pellets.

[0063] Biochar produced through a pyrolysis furnace (140) can be directly transferred to a synthesis gas generator or formed into pellets using a pellet forming machine (170) and a cooler (180).

[0064] Pellet-type biochar has a more solid bond, preventing damage due to crumbling, thus preventing raw material loss, enabling long-term storage, and further optimizing carbon content and porous structure.

[0065]

[0066] Meanwhile, FIG. 5 is a schematic diagram illustrating a bio-oil production system utilizing sewage sludge and livestock manure according to a second embodiment of the present invention.

[0067] Referring to FIG. 5, a bio-oil production system utilizing sewage sludge and livestock manure according to a second embodiment of the present invention is configured to recycle waste heat gas generated during the thermal decomposition process.

[0068] That is, an exhaust gas line (L1) is installed on the upper side of the furnace (141) of the pyrolysis furnace (140), and an exhaust gas branch line (L2) is installed in the exhaust gas line (L1), and the exhaust gas is configured to be supplied as fuel to the gas burner (142) through the exhaust gas branch line (L2). By supplying the exhaust gas as fuel to the gas burner (142), energy efficiency can be significantly improved.

[0069] Furthermore, after exhaust gas is introduced into the exhaust gas line (L1) installed on the upper side of the pyrolysis furnace (141), the biochar may be diverted to the pellet forming machine (170) (shown in FIG. 1) through the branch line (L3). At this time, the biochar is pelletized through the pellet forming machine (170) and cooled and solidified through the cooler (180).

[0070]

[0071] Meanwhile, referring to FIGS. 1 to 4, a method for producing bio-oil using sewage sludge and livestock manure according to a preferred embodiment of the present invention comprises: a first step (S10) of feeding sewage sludge and livestock manure into a supply hopper (110); a second step (S20) of mixing sewage sludge and livestock manure using a stirrer (120) to create a mixture; a third step (S30) of drying the mixture using a dryer (130); a fourth step (S40) of thermally decomposing the dried mixture using a pyrolysis furnace (140) to produce biochar; a fifth step (S50) of reacting biochar with oxygen and steam at high temperature using a syngas generator (150) to produce syngas; a sixth step (S60) of adding hydrogen to the produced syngas to increase the hydrogen concentration; It is configured to include a seventh step (S70) of converting synthesis gas (CO+H2) into liquefied hydrocarbon using a catalyst through a Fischer-Tropsch synthesis reaction using a reactor (150);

[0072] In the above first step (S10), sewage sludge and livestock manure are input in a 1:1 ratio. For example, the total solids content can be 900 kg with 500 kg of sewage sludge and 500 kg of livestock manure.

[0073] In the third step (S30), it is preferable to dry the mixture using a dryer (130) so that it has a moisture content of 10% or less.

[0074] In the thermal decomposition process of the above-mentioned fourth step (S10), the dried mixture can be produced as biochar by thermal decomposition at a high temperature of 300 to 700°C using indirect heat and applying a rotary kiln type semi-carbonization reactor structure.

[0075] The pyrolysis conversion rate (biochar conversion rate during the pyrolysis process) is 30 to 50% of the solids, and for example, 270 to 450 kg of biochar can be produced.

[0076] Biochar production volume may vary depending on the composition of raw materials, pyrolysis conditions, and equipment efficiency.

[0077] If the moisture content of the raw material input into the pyrolysis process is high, the moisture of the raw material may evaporate during the pyrolysis process, causing H2O to decompose into H and O2, and due to secondary chemical bonding of these with the syngas or biochar, the quality of the syngas, especially the calorific value, as well as the biochar, may deteriorate.

[0078] Therefore, it is desirable to keep the moisture content of the mixture introduced into the pyrolysis process in a pyrolysis furnace as low as possible.

[0079] For reference, biochar is a coal-substitutable fuel that can be converted into a high-carbon solid fuel through a pyrolysis process.

[0080] The porous structure of biochar can increase combustion efficiency and improve energy density.

[0081] If the combustion characteristics of biochar are optimized to be similar to those of coal, it can be used in existing combustion devices.

[0082] Biochar can make its market price competitive through mass production and cost reduction.

[0083] By optimizing the carbon content and porous structure of the produced biochar, energy density and combustion characteristics can be improved.

[0084] For reference, let's look at the differences between coal and biochar. Coal is formed over millions of years through geological processes, has an amorphous carbon structure and a layered structure, and has a variety of carbon contents depending on the variety, with anthracite coal having the highest content, and is mainly used for energy production and as an industrial fuel.

[0085] On the other hand, biochar is produced by pyrolyzing organic waste, has a porous structure and high surface area, is composed of high carbon content and a stable form, and is used for various purposes such as soil improvement and environmental purification.

[0086] Additionally, the carbon reduction effect of biochar production is as follows.

[0087] First, carbon stably stored in biochar contributes to lowering the concentration of carbon dioxide in the atmosphere (carbon storage effect).

[0088] Second, methane emissions from organic waste can be reduced through the pyrolysis process (methane emission effect).

[0089] Third, biochar improves the physical and chemical properties of soil, thereby promoting carbon absorption (soil improvement effect).

[0090] Fourth, carbon emissions can be indirectly reduced by effectively handling waste (waste management efficiency).

[0091] Additionally, the synthesis gas generated in the fifth step (S10) may contain hydrogen, carbon monoxide, and steam.

[0092] Additionally, the catalyst for the Fischer-Tropsch Synthesis reaction process may be a cobalt-based catalyst or an iron-based catalyst.

[0093] In addition, the catalyst for the Fischer-Tropsch reaction process may include an iron (Fe) compound as an active material, sodium (Na) and sodium hydroxide (NaOH) as cocatalysts, and a carrier.

[0094] Sodium (Na) and sodium hydroxide (NaOH) may each be included in an amount of 5 to 20 parts by weight per 100 parts by weight of the carrier.

[0095] When sodium (Na) and sodium hydroxide (NaOH) are less than 5 parts by weight, the effect of increasing the surface basicity due to the addition of sodium (Na) and sodium hydroxide (NaOH) is weak, and when it is more than 20 parts by weight, the surface basicity is too strong, so that a lot of carbon deposition reaction occurs during the Fischer-Tropsch reaction, which can easily cause the catalyst to be deactivated.

[0096] In addition, in the case of an iron-based catalyst in the above Fischer-Tropsch synthesis reaction, depending on the basicity of the catalyst surface, the carbon and iron atoms generated through the Buda reaction react to cause a carbide-forming reaction, and the carbide-forming reaction promotes chain growth of hydrocarbons, allowing the synthesis of hydrocarbon products with long chain structures.

[0097] Additionally, in the process of adding hydrogen to synthesis gas, a metal catalyst can be used to promote the reaction between methane and hydrogen.

[0098] Additionally, the metal catalyst includes any one of a nickel catalyst, a rutinium catalyst, a palladium catalyst, and a platinum catalyst.

[0099] Additionally, in the process of adding hydrogen to synthesis gas, a catalyst combining graphene and copper can be used to promote the reaction between methane and hydrogen.

[0100] Copper (Cu) enhances the reducing power of iron-based catalysts. In other words, copper can enhance catalytic activity by accelerating the catalytic activation process.

[0101] Additionally, copper plays a role in lowering the reduction temperature of the catalyst on iron-based catalysts.

[0102] Additionally, in the process of adding hydrogen to synthesis gas, a catalyst with an enzyme added to a graphene and copper complex can be used to promote the reaction between methane and hydrogen.

[0103] Furthermore, the process may include a process of producing biochar pellets using a pellet forming machine (170) (shown in FIG. 1) using the biochar produced in the fourth step (S10) and a process of cooling the biochar pellets using a cooler (180) (shown in FIG. 1).

[0104]

[0105] Meanwhile, the present specification and drawings disclose preferred embodiments of the present invention. Although specific terms have been used, they are used in a general sense only to easily explain the technical contents of the present invention and to assist in understanding the invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modified examples based on the technical concept of the present invention are possible in addition to the embodiments disclosed herein.

[0106] As described above, the present invention has the following effects.

[0107] First, by producing biochar using sewage sludge and livestock manure and using the biochar as a coal substitute, it is an innovative new technology that enables waste management and sustainable energy production, and has various environmental benefits such as carbon reduction, soil improvement, and water purification.

[0108] Second, by effectively processing waste and applying technologies to produce biochar, we can indirectly reduce carbon emissions and secure incentives based on carbon credits.

[0109] Third, biochar production has a carbon reduction effect, and the carbon stably stored in biochar contributes to lowering atmospheric carbon dioxide concentrations.

[0110] Fourth, methane emissions from organic waste can be reduced through the pyrolysis process, and biochar improves the physical and chemical properties of soil, promoting carbon absorption.

Claims

1. Step 1 (S10) of putting sewage sludge and livestock manure into the supply hopper (110); The second step (S20) is to mix sewage sludge and livestock manure to create a mixture; The third step (S30) of drying the above mixture; Step 4 (S40) of producing biochar by pyrolyzing the dry mixture; Step 5 (S50) of producing synthesis gas by reacting the above biochar with oxygen and steam at high temperature; Step 6 (S60) of increasing the hydrogen concentration by adding hydrogen to the produced synthesis gas; and A method for producing bio-oil using sewage sludge and livestock manure, comprising a seventh step (S70) of converting synthesis gas into liquefied hydrocarbon using a catalyst through a Fischer-Tropsch synthesis reaction.

2. In paragraph 1, A method for producing bio-oil using sewage sludge and livestock manure, characterized in that in the thermal decomposition process of the above-mentioned fourth step (S40), the dried mixture is produced as biochar by thermal decomposition using indirect heat and applying a rotary kiln type semi-carbonization reactor (140).

3. In paragraph 1, A method for producing bio-oil using sewage sludge and livestock manure, wherein the synthesis gas produced in the above-mentioned fifth step (S50) contains hydrogen, carbon monoxide, and steam.

4. In paragraph 1, A method for producing bio-oil using sewage sludge and livestock manure, characterized in that the catalyst for the above Fischer-Tropsch Synthesis reaction process uses a cobalt-based catalyst or an iron-based catalyst.

5. In paragraph 1, A method for producing bio-oil using sewage sludge and livestock manure, wherein the catalyst for the above Fischer-Tropsch reaction process comprises an iron (Fe) compound as an active material, sodium (Na) and sodium hydroxide (NaOH) as cocatalysts, and a carrier.

6. In paragraph 5, A method for producing bio-oil using sewage sludge and livestock manure, characterized in that in the case of an iron-based catalyst in the above Fischer-Tropsch synthesis reaction, carbon and iron atoms generated through the Buda reaction react depending on the basicity of the catalyst surface to cause a carbide formation reaction, and the carbide formation reaction promotes chain growth of hydrocarbons to synthesize hydrocarbon products with a long chain structure.

7. In paragraph 1, A method for producing bio-oil using sewage sludge and livestock manure, characterized in that a metal catalyst is used to promote the reaction of methane and hydrogen in the process of adding hydrogen to synthesis gas.

8. In paragraph 7, A method for producing bio-oil using sewage sludge and livestock manure, characterized in that the metal catalyst comprises any one of a nickel catalyst, a rutinium catalyst, a palladium catalyst, and a platinum catalyst.

9. In paragraph 1, A method for producing bio-oil using sewage sludge and livestock manure, characterized in that a catalyst combining graphene and copper is used to promote the reaction of methane and hydrogen in the process of adding hydrogen to synthesis gas.

10. In paragraph 1, A method for producing bio-oil using sewage sludge and livestock manure, characterized in that a catalyst comprising an enzyme added to a graphene and copper complex is used to promote the reaction of methane and hydrogen in the process of adding hydrogen to synthesis gas.

11. In paragraph 1, A method for producing bio-oil using sewage sludge and livestock manure, wherein sodium (Na) and sodium hydroxide (NaOH) are each contained in an amount of 5 to 20 parts by weight per 100 parts by weight of the carrier.

12. In paragraph 1, A method for producing bio-oil using sewage sludge and livestock manure, including a process of producing bio-char pellets through a pellet molding machine (170) using the biochar produced in the above-mentioned fourth step (S40) and a process of cooling the bio-char pellets using a cooler (180).

13. Supply hopper (110) for feeding sewage sludge and livestock manure; A stirrer (120) for mixing sewage sludge and livestock waste supplied through the above supply hopper (110) to create a mixture; A dryer (130) for drying the mixture; A pyrolysis furnace (140) for producing biochar by pyrolyzing a dry mixture; A synthesis gas generator (150) for producing synthesis gas by reacting the above biochar with oxygen and steam at high temperature; and A bio-oil production system utilizing sewage sludge and livestock manure, including a reactor (160) for converting synthesis gas (CO+H2) into liquefied hydrocarbon.

14. In paragraph 13, A pellet forming machine (170) that forms the biochar produced through the above pyrolysis furnace (140) into a pellet shape; and A bio-oil production system utilizing sewage sludge and livestock manure, further comprising a cooler (180) for cooling biochar pellets.

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