KR101641371B1 - Apparatus for Improving Recycle Fuel from Plastic Waste for Generating Engine Using Diesel and Heavy oil, and Method for Improving the Same - Google Patents

Abstract

TECHNICAL FIELD The present invention relates to an improvement device for diesel and heavy oil engine power generation from recycled fuel oil produced from waste plastics and an improvement method thereof, and more specifically, to improve the flash point and pour point of regenerated fuel oil to improve the quality to be suitable for light oil and heavy oil engine power generation The present invention relates to an improvement device for diesel and heavy oil engine power generation. Regeneration fuel oil produced from plastic waste The improvement device for the light oil and heavy oil engine power generation is a pyrolysis furnace for pyrolysis of waste plastic for domestic use; A separator for separating the regenerated fuel oil in the thermal decomposition furnace into a gas and a liquid component; A cooling device for cooling the gas and liquid components separated in the separation device; A purifier for purifying the liquid component and the gas component transferred from the cooling device and transferring the liquid component and the gas component through different paths; And a pour point improving unit for raising the pour point of the regenerated fuel oil transferred from the purifier and a flash point improving unit for increasing the flash point by adding the generated wastewater and alkali metal compound.

Description

Technical Field [0001] The present invention relates to an improvement device for diesel and heavy oil engine power generation, and a method for improving the same,

TECHNICAL FIELD The present invention relates to an improvement device for diesel and heavy oil engine power generation from recycled fuel oil produced from waste plastics and an improvement method thereof, and more specifically, to improve the flash point and pour point of regenerated fuel oil to improve the quality to be suitable for light oil and heavy oil engine power generation The present invention relates to an improvement device for diesel and heavy oil engine power generation.

Generally, the recycled fuel oil obtained by pyrolyzing the plastic for daily use contains a large amount of paraffin component and highly volatile carbonized organic matter as compared with light oil. As a result, the flash point of the regenerated fuel oil is increased, which is a disadvantage in that it is not suitable as a heavy oil or light oil engine. In addition, due to the high pour point, when the temperature of the winter or the atmosphere is low, it is difficult to supply a proper flow rate to the engine. Plastics for daily use include PVC, polypropylene (PP), polyethylene (PE), polystyrene (PS), vinyl chloride (PVC) and reinforced plastic (ABS). In the case of such a living plastics, pyrolysis and emulsification are carried out in the order of vinyl chloride (PVC), polystyrene (PS), polypropylene (PP) and polyethylene (PE). In the initial stage of pyrolysis, olefins and paraffins account for a large portion, and paraffin can be a major cause of inhibiting the pour point. Therefore, appropriate means are needed to improve the pour point of paraffin entangled at low temperatures. Also, it is necessary to prevent the phenomenon of becoming a print at a low temperature due to a component of a volatile organic compound.

As a prior art related to the production of regenerated fuel oil, Patent Registration No. 0659244 entitled 'Regenerated fuel oil processing system using waste plastic'. The prior art includes a first molecular reactor for melting waste plastic; A first molecular filter for removing impurities contained in the regeneration gas discharged from the first molecular reactor; A cooling decompression device for lowering the temperature of the regeneration gas that has passed through the first molecular filter to lower the pressure of the regeneration gas; A first cooler for cooling and liquefying the regeneration gas not liquefied in the cooling and depressurizing device; A first recycled oil storage tank for storing regenerated oil liquefied in the cooling decompression device and the first cooler, and for introducing regeneration oil not liquefied in the first cooler; A first cooling water pump for supplying cooling water to the cooling decompression device; A first cooling water cooling device for lowering the temperature of the cooling water discharged from the cooling decompression device; And a gas purifier connected to the first recycled oil storage tank, wherein the gas purified in the gas purifier is transferred to a firebox of the first reactor through a gas pipe to be used as fuel for heating the first reactor And a regeneration processing system for regeneration processing.

Another prior art related to the production of regeneration oil is Patent No. 0969702, "Waste synthetic resin emulsification apparatus and waste synthetic resin emulsion method". The present invention relates to a process for producing a gas by vaporizing a waste synthetic resin, comprising a cooler for recovering regenerated oil by cooling the gas, a harmful gas processing device for removing the harmful gas contained in the gas remaining after recovering the regenerated oil, And a storage tank for storing the regenerated recovered oil, wherein the noxious gas processing apparatus oxidizes harmful substances contained in the gas by mixing the gas and the compressed air at a volume ratio of 1: 1 to 1.5: 1, , A pre-treatment reactor in which the pre-treated gas and oxygen are mixed in a volume ratio of 1: 1.5 to 1: 2 to oxidize and treat the harmful substances contained in the pre-treated gas An oxidation reactor and a neutralization reactor for removing harmful gas by injecting a mixture of an aqueous solution of sodium hydroxide and coral into the gas, .

The prior art does not disclose the improvement of the pour point of paraffin or the volatile component of the low temperature flame phenomenon, which is disadvantageous in that it is not suitable for application to light oil engine power generation.

The present invention has been made to solve the problems of the prior art and has the following purpose.

Prior Art 1: Korean Patent Registration No. 0659244 (21st Century Energy Co., Ltd., published on December 19, 2006) Recycled oil processing system using waste plastic Prior Art 2: Korean Patent Registration No. 0969702 (published by S-R & C Co., Ltd., July 14, 2010) Waste synthetic resin emulsification apparatus and waste synthetic resin emulsification method

It is an object of the present invention to provide a method and apparatus for improving the pour point and flash point of refueling fuel while at the same time avoiding the phenomenon of being ignited at low temperature due to volatile gas components so that the fuel oil produced from the waste plastics can be used for light- And to provide an improvement device for the light oil and heavy oil engine power generation and an improvement method thereof.

According to a preferred embodiment of the present invention, the improvement device for light oil and heavy oil engine power generation of regenerated fuel oil produced from plastic waste is a pyrolysis furnace for pyrolysis of waste plastic for domestic use; A separator for separating the regenerated fuel oil in the thermal decomposition furnace into a gas and a liquid component; A cooling device for cooling the gas and liquid components separated in the separation device; A purifier for purifying the liquid component and the gas component transferred from the cooling device and transferring the liquid component and the gas component through different paths; And a pour point improving unit for raising the pour point of the regenerated fuel oil transferred from the purifier and a flash point improving unit for increasing the flash point by adding the generated wastewater and alkali metal compound.

According to another preferred embodiment of the present invention, the pour point improvement device of the improvement device for light oil and heavy oil engine power generation of regenerated fuel oil includes a surfactant storage tank for storing the surfactant.

According to another preferred embodiment of the present invention, the flash point improvement unit of the improvement apparatus for light oil and heavy oil engine power generation includes an alkali metal compound storage tank.

According to another preferred embodiment of the present invention, the flash point strengthening unit or the pour point improving unit of the improvement device for light oil and heavy oil engine power can accurately measure and transfer the amount of regenerated fuel oil, additives and wastewater having different specific gravity and kinematic viscosity per process step A non-contact type level sensor, a chemical resistance electromechanical valve, and a chemical resistance transfer pump.

According to another preferred embodiment of the present invention, a method for producing fuel for engine power generation is a method for producing a fuel oil for diesel fuel oil and heavy oil engine power generation by improving waste plastic renewable fuel oil, ;

Separating and cooling the fuel oil obtained through the pyrolysis; Purifying the cooled regenerated fuel oil and adding and mixing a surfactant to improve the pour point; Adding and mixing wastewater and an alkali metal compound to improve the pour point to increase the flash point; And mixing and stirring the mixture of the wastewater and the alkali metal compound generated in the pyrolysis process with the regenerated fuel oil containing the surfactant to increase the flash point, thereby producing a stationary engine power generation fuel.

The improvement device according to the present invention has an advantage in that the regenerated fuel oil produced from waste plastic for life can be improved to meet a predetermined quality standard so that it can be applied to a fixed heavy oil or light oil engine generator. By using the fuel flow channel for power generation as described above, it is advantageous to maximize utilization of the waste plastic as renewable energy. It also has the advantage of being advantageous in terms of resource recycling by producing fuel of suitable quality for civil power generation industry. It has an advantage that environmental pollution is prevented by effectively treating acidic wastewater while producing recycled raw materials from waste plastics for living use.

1 shows an embodiment of a method for producing fuel for engine power generation according to the present invention.
FIG. 2A shows an embodiment of an improvement device for diesel and heavy oil engine power generation according to the present invention.
FIG. 2B shows an embodiment of a pour point improving apparatus and a flash point improving apparatus which can be applied to the improvement apparatus for light oil and heavy oil engine power generation according to the present invention.
FIG. 3 is a table showing test results of the fuel oil produced in the improvement device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1 shows an embodiment of a method for producing fuel oil for engine power generation according to the present invention.

Referring to FIG. 1, a method of producing a fuel oil suitable for diesel fuel and heavy oil engine power generation by using a regenerated fuel oil produced from waste plastic includes a step (P11) of obtaining a raw material by a pyrolysis process of waste plastic; Separating and cooling the fuel oil obtained through pyrolysis (P12); (P13) adding and mixing the surfactant to improve the pour point (P14); (P15) of adding a mixture of alkali metal compounds to the wastewater generated in the pyrolysis process to improve the flash point to increase the flash point; And a step (P16) of making a fuel for engine power generation by stirring the mixture for improving the flash point and the flash point improving the pour point.

The waste plastic to which the improvement method according to the present invention can be applied may be a thermoplastic resin including polypropylene (PP), polyethylene (PE), polystyrene (PS), vinyl chloride (PVC) and reinforced plastic (ABS). Such a thermoplastic resin can be separated into steam and vapor as pyrolysis is applied to, for example, a horizontal rotary pyrolyzer. The pyrolyzed water vapor and oil components can be separated from the sludge and become liquid when cooled (P12). Liquid ecological water vapor and vapor can be purified by separating liquid sludge (P13). In addition, by-product gas may be generated during purification (P131). The generated by-product gas can be supplied to the heating furnace to be used as a fuel flow path for pyrolysis, the waste water can be recycled, and the oil can be used as a regenerating fuel flow path.

Pyrolysis is carried out in the order of vinyl chloride (PVC), polystyrene (PS), polypropylene (PSP) and polyethylene (PE), and because of the pyrolysis furnace, the regenerated fuel oil may contain olefin and paraffin components. The pyrolyzed paraffins become entangled with each other when cooled, thereby lowering the pour point of the recycled fuel oil. Therefore, the pour point of the recycle fuel oil containing such paraffin components needs to be improved. In order to improve the pour point, a surfactant is added at a temperature of 45 to 55 캜 to mix and stir, and paraffin is made into a small lump to improve the pour point of the recycled fuel oil (P14). By improving the pour point, the flow of regeneration fuel containing olefin and paraffin components of the regenerated fuel oil can be smoothly supplied at a low temperature to the light oil and heavy oil engine power generation. Volatile organic compounds having 1 to 6 carbon atoms may be generated in the early stage of the pyrolysis process for the production of regenerated fuel oil, for example, during the temperature rise to 200 to 350 ° C. Such a volatile component has a problem that the flash point of the regenerant oil is lowered. Therefore, the flash point of the refueling oil needs to be improved. In order to improve the flash point, the alkali metal compound may be added to the acidic wastewater generated in the pyrolysis process and mixed with the acidified renewable fuel oil, thereby improving the flash point (P15). By improving such a flash point, it is possible to prevent the occurrence of fires in light oil and heavy oil engine power generation, and to meet the quality standard of the renewable fuel oil. The regeneration fuel flow path for engine power generation can be made through agitation (P16) by mixing the regenerated fuel oil with improved pour point and the mixture for improving the flash point (P17).

An embodiment of the improvement device according to the present invention in which such a method can be applied will be described below.

FIG. 2A shows an embodiment of an improvement device 20 for diesel and heavy oil engine power generation according to the present invention, and FIG. 2B shows an embodiment of a pour point improvement device 232 and a flash point improving device 233 according to an embodiment of the present invention.

Referring to FIG. 2A, the improvement device 20 for regenerating diesel fuel and heavy oil engine according to the present invention includes a horizontal low speed rotation pyrolysis furnace 21 for pyrolysis of waste plastics; A separator (22) for separating the regenerated fuel oil from the pyrolysis furnace into a gas and a liquid component; A cooling device (23) for cooling the gas and liquid components separated in the separation device; A purifier (24) for separating and purifying the liquid component and the gas component transferred from the cooling device (23) and transferring them to different paths; And a pour point improving unit (25) for adding and stirring a surfactant to increase the pour point of the regenerated fuel oil transferred from the purifier (23), and an alkaline metal compound added to the generated wastewater generated in the pyrolysis step And the height may include a flash point improving unit 26. [

The pyrolysis furnace 21 may be, for example, a horizontal low speed rotation type pyrolyzer and may include a pyrolysis furnace 212 for melting the introduced waste plastic and a heating furnace 213 for heating the pyrolysis furnace 212 .

The fuel in the heating furnace 213 may be, for example, a by-product gas and regenerated fuel oil, and may be a by-product gas burner or a regenerative fuel oil burner. The by-product gas burner is used because the regenerated fuel oil burner is used for the initial operation of the heating furnace 213 and the by-product gas generated by the progress of the thermal decomposition of the polymer waste is used as the combustion raw material for the heating furnace 213 will be. The heating furnace 213 may be constructed in a structure in which a burner is installed along the front and longitudinal direction of the pyrolysis furnace 212. In the heating furnace 213, the burner can be installed below the cylindrical cylinder, and can be heated along the peripheral surface by the low-speed rotation of the pyrolysis furnace 212, and can be heated to a large number of burners The entire pyrolysis furnace 212 can be heated. The heating furnace 213 can heat the pyrolysis furnace 213 such that the temperature of the pyrolysis furnace 213 is, for example, 300 to 500 ° C, but the heating temperature can be appropriately adjusted according to the temperature of the polymer waste.

The by-product gas and the vapor generated as a result of pyrolysis from the waste plastics in the pyrolysis furnace 212 can be transferred to the separator 22. In the separating device 22, the liquid type sludge is again conveyed to the pyrolysis furnace 212, and the gaseous vapor and water vapor can be transferred to the cooling device 23. The vaporized vapor and water vapor in the gaseous state are cooled in the cooling device 23 to be changed into the liquid state, and the vapor changes into the regenerated fuel oil and the liquid sludge in the liquid state. As such, in the pyrolysis furnace 21, liquids such as by-product gas, vapor and wastewater can all be in a gaseous state and can be transferred to the separation device 22 together with the liquid sludge. The liquid sludge can then be transferred back to the melting furnace 212 from the separator 22. On the other hand, the water vapor and the vapor component can be converted from the gas form to the liquid form by the cooling device 23. Thus, the cooling device 23 changes the wastewater and the vapor component into liquid. The cooling device 23 may be, but not limited to, for example, air cooling, water cooling, natural cooling, or a combination thereof. For example, a cooling unit (not shown) in which the temperature is abruptly lowered may be installed at the end of the cooling device 23. The cooling unit can be, for example, in the form of a plurality of tubes. However, since the by-product gas must be maintained in a gaseous state, at least the cooling temperature of the cooling unit can be set to a higher temperature than the vaporization temperature of the by-product gas.

The vaporized mixture exiting the cooling unit 23 can be liquid wastewater, vapor and solids, and can include byproduct gas. The by-product gas is separated and then transported to the pyrolysis furnace (21) to be used as fuel.

The vapor, wastewater and liquid sludge treated in the cooling device 23 can be conveyed to the purification device 24. The purification apparatus 24 may include, for example, a water precipitation apparatus and an oil water separation apparatus.

The oil precipitation apparatus can be, for example, a device for allowing the by-product gas to be discharged by pressure as the external pressure is applied, and to allow the solids to settle in the wastewater in liquid form and the regenerated fuel oil and liquid sludge. The byproduct gas separated from the oil precipitation apparatus can be transported to the pyrolysis furnace (21) as described above and used as raw material or transferred to the storage tank.

The wastewater and regenerated fuel oil and the liquid sludge of the treated liquid components in the oil precipitation apparatus can be transferred to an oil separation apparatus. If necessary, the solids can be treated separately before being conveyed to the oil separator.

The oil separator is for separating the regenerated fuel oil, waste water and liquid sludge, and the regenerated fuel oil, waste water and liquid sludge can be separated into three layers. The oil-water separator may be, for example, a rectangular container using a specific gravity and a temperature difference, and may have two partition walls having different heights so that regenerated fuel oil, waste water, and liquid sludge can be separated. The temperature of the oil water separator can be adjusted as needed. For example, the temperature of the oil separation apparatus can be maintained at 35 to 45 占 폚. The oil water separator can be connected to the wastewater tank and a filter can be installed in the wastewater tank. On the other hand, the oil-water separation device can be connected to the mixing device. When the oil separator is completely separated from the wastewater and the renewable fuel oil and liquid sludge, the wastewater can be transferred to the wastewater tank and the recycled fuel oil can be transferred to the mixing unit. And the liquid sludge can be transported by pyrolysis and can be recycled. The wastewater transferred to the wastewater tank can be transferred to the mixing apparatus after filtration. The weight ratio of the regenerated fuel oil and the wastewater fed to the mixing device to be mixed can be 85: 15 to 10, taking the total heat generation amount into consideration as the regenerated fuel oil: wastewater. The mixing device may have a speed variable stirrer and may be mixed by stirring, for example, an additive such as an alkali metal compound, wastewater and regenerated fuel oil. Thereafter, the regenerated fuel oil can be transferred to the flash point improving unit 26.

2B, the regenerated fuel oil before being transferred to the pour point improving unit 25 may be transferred to the temporary reservoir 251 and the temperature of the regenerated fuel oil may be reduced to 45 to < RTI ID = 0.0 > RTI ID = 0.0 > 55 C. < / RTI > The pour point improving unit 25 may comprise a surfactant tank 252 and the amount of surfactant supplied in the surfactant tank 252 may be adjusted according to the amount of regenerated fuel oil. For example, a surfactant may be supplied such that the amount of surfactant is 3 to 8 liters per 100 liters of regenerated fuel oil. Thereafter, the regenerated fuel oil and the surfactant can be moved to the agitation unit and a variable motor can be installed in the agitation unit. The variable motor provided in the stirring unit can stir the regenerated fuel oil and the surfactant for 10 to 20 minutes at a speed of 500 to 800 times per minute, for example. The mixed liquid in which the pour point is to be improved in the pour point improving unit 25 can thus be transferred to the mixing unit 27. [

The flash point improving unit 26 may include a temporary reservoir 261, an alkali metal compound tank 262, a stirring unit, and a flow rate control unit 264 to which waste water generated in the pyrolysis process is transferred. The temporary storage 261 may include a temperature control unit for maintaining the temperature of the wastewater at a temperature of 80 to 90 占 폚. The amount of the alkali metal compound supplied from the alkali metal compound tank 262 may be, for example, 0.5 to 1.5 wt% based on 100 wt% of the recycled fuel oil. The wastewater and the alkali metal compound can be transferred to the variable agitation unit and the variable motor can be installed in the agitation unit in the given amount. The variable motor may be rotated for 8 to 15 minutes, for example, at a rotational speed of 400 to 800 revolutions per minute to stir the wastewater and the alkali metal compound. The fuel oil with the improved pour point after the stirring is completed can be transferred to the mixing device 27. When the temperature is lower than 60 캜 in the stirring process, paraffin components become irregularly entangled and the pour point of the recycled fuel oil may be lowered again. Thus, the mixture of the regenerated fuel oil of the pour point improving unit 25 and the flash point improving unit 26 is transferred to the mixing unit 27 and mixed for 10 to 20 minutes to make the fuel flow path for engine power generation.

The flow rate control units 254 and 264 measure the flow rate of the regeneration fuel oil, water, and additives by using a noncontact type level sensor, and simultaneously control the operation and stoppage during the inflow and outflow by combining the feed pump and the motor- Lt; / RTI > These flow rate control sensors 254 and 264 are provided with a surfactant storage tank 252, a regenerated fuel temporary storage tank 251, an alkali metal compound tank 262, a waste water temporary storage tank 261 generated in a pyrolysis process, The regenerated fuel oil-pour point improving unit 253, the regenerated fuel oil-flash point improving unit 263, or the mixing device 27. [

The regenerated fuel oil produced according to the method or apparatus according to the present invention has been shown to be suitable for diesel and heavy oil engine power generation.

The physical properties of the regenerated fuel oil prepared by adding alkylnaphthalene as a surfactant in an amount of 5 wt% of the total weight and the alkali metal compound in an amount of 1.0 wt% of the total weight were as follows. The test report of fuel oil is presented.

Quality standard (ISO8217) Before improvement After improvement Kinematic viscosity (cSt) 2.0180 2.99    same as before Density (kg /) 890975 825.1    same as before  Sulfur (%) 1.52.0 0.03    same as before Flash point (℃) min60 21.5 65.0 Computers (mgKOH / kg) max0.52.5 14.1 0.5 10% residual carbon water (mass%) max0.3 0.08    same as before Residual carbon content (mass%) max0.315.0 0.12    same as before Pour Point (℃) max0-6, 630 17 29.0 Exterior ( - ) clear and bright Black color    same as before Water (volumn%) max0.30.5 Less than 0.1    same as before  Mass% max0.010.07 0.010    same as before

Quality standard: ISO8217

The improvement device according to the present invention has an advantage in that the regenerated fuel oil produced from waste plastic for life can be improved to meet a predetermined quality standard so that it can be applied to a fixed heavy oil or light oil engine generator. As such, it can be used as a fuel for new and renewable power generation, thereby maximizing utilization of waste plastics as renewable energy. It also has the advantage of being advantageous in terms of resource recycling by producing fuel of suitable quality for civil power generation industry. It has an advantage that environmental pollution can be prevented by effectively treating acidic wastewater while producing regenerated oil from waste plastic for living use.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

20: Improvement device for engine power generation 21: Pyrolysis furnace
22: separator 23: cooling device
24: Purification apparatus 25: Pour Point Improvement Unit
26: flash point improving unit 27: mixing device
212: pyrolysis furnace 213: heating furnace
232: Pour Point Improving Device 233: Flash Point Improving Device
251, 261: Temporary storage 252: Surfactant tank
253: Pour Point Improvement Unit 254, 264: Flow Control Unit
262: alkali metal compound tank 263: flash point improving unit

Claims (5)

Pyrolysis furnace for pyrolysis of waste plastics for daily use;
A separator for separating the regenerated fuel oil in the thermal decomposition furnace into a gas and a liquid component;
A cooling device for cooling the gas and liquid components separated in the separation device;
An oil precipitation apparatus for treating by-product gas and solid matter as external pressure is applied so as to purify the liquid component and the gas component transferred from the cooling device and transfer the same to different paths, and a regenerated fuel oil, wastewater and liquid A purification device comprising an oil-water separation device for separating sludge;
A pour point improving unit for raising the pour point of the regenerated fuel oil transferred from the purifier and a flash point improving unit for increasing the flash point by adding the generated wastewater and alkali metal compound; And
And a mixing device for mixing the regenerated fuel oil and the waste water,
Wherein the improvement of the pour point is made by alkyl naphthalene. delete delete The flashpoint improving unit according to claim 1, wherein the pour point improving unit includes a temperature adjusting unit for maintaining the temperature of the regenerating fuel oil at 45 to 55 캜, and the flash point improving unit includes a temperature adjusting unit , And is stirred at a temperature of at least 60 DEG C to prevent the formation of paraffin in the mixing apparatus. The improvement device for diesel and heavy oil engine power generation of regeneration fuel oil produced from plastic waste. A method for producing fuel oil for light oil and heavy oil engine power generation by improving waste plastic renewable fuel oil,
Obtaining a raw material by thermal decomposition of waste plastics;
Separating and cooling the fuel oil obtained through pyrolysis into a liquid component and a gas component;
Treating the cooled liquid component and the gaseous component with a by-product gas and a solid material while an external pressure is applied to purify the cooled liquid component and the gaseous component so as to be transferred through different routes;
Separating the fuel oil treated with the by-product gas and the solid matter into different layers of regenerated fuel oil, wastewater and liquid sludge;
Cooling and refining the regenerated fuel oil and adding and mixing alkyl naphthalene to improve the pour point;
Adding an alkali metal compound to the wastewater to increase the flash point; And
And mixing the regenerated fuel oil and the wastewater to form a fuel flow path for engine power generation.

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