91 results about "Marine fuel" patented technology

The invention discloses a marine fuel leakage assessment method, device and equipment, a medium and a product. The method comprises the following steps: acquiring leakage scene information related to marine fuel leakage, wherein the leakage scene information at least comprises personnel position information, ship environment information, leakage state information and fuel type information; based on the leakage scene information, determining first distribution data of leakage concentration and leakage related positions by calling a preset simulation model realized based on computational fluid dynamics or calling a historical leakage simulation result in a database, and second distribution data of leakage concentration and leakage time at a position indicated by the personnel position information; and according to the first distribution data and the second distribution data, visually displaying a leakage concentration contour map marked with the personnel position information, a leakage concentration time change map and personnel escape suggestion information. According to the scheme, the actual threat degree of leakage to personnel on the ship can be reflected, and suggestions for dealing with leakage are provided.

The invention discloses a method for producing marine fuel oil. The method comprises the following steps: a residual oil raw material and hydrogen sequentially enter a first hydrotreating reactor to an (N-1)-th hydrotreating reactor for reaction, an obtained product, solid-removed oil slurry and optional catalytic diesel oil enter an Nth hydrotreating reactor to be in contact with a hydrogenation catalyst for reaction, and hydrogenated diesel oil and hydrogenated heavy oil are obtained, wherein a portion of the hydrogenated diesel oil is used as a first hydrotreating reactor feed; one part of the hydrogenated heavy oil enters a catalytic cracking unit for reaction to obtain catalytic diesel oil and catalytic slurry oil; and blending the obtained hydrogenated heavy oil with optional solid-removed oil slurry, optional catalytic diesel oil and optional hydrogenated diesel oil to prepare the marine fuel oil. According to the method disclosed by the invention, high-quality ship fuel which is low in cost and can meet indexes can be produced, and the problems that the overall utilization efficiency of a catalyst is low and the operation period of a device is restricted due to the fact that solid-removed oil slurry, catalytic diesel oil and the like are conventionally mixed at the inlet of the first reactor can be solved.

This invention discloses a hydrodesulfurization catalyst and its preparation method and application. The steps are as follows: (1) an organic polymer is modified with acid and then mixed with boehmite powder to obtain a first mixture; (2) an aqueous solution of amorphous silica-alumina and a heated organic polymer is mixed and spheroidized to obtain a first precursor; (3) a second precursor is prepared; (4) a second mixture is prepared; (5) a third precursor is prepared; (6) a support is prepared, and after introducing a hydrogenation active metal component, it is dried and calcined to obtain the hydrodesulfurization catalyst. The prepared catalyst has a non-uniform pore distribution structure, which not only gives it high impurity removal capacity, containment capacity and asphaltenes conversion capacity, but also reduces the sediment content in the generated oil. It is particularly suitable for the hydrotreating process of directly producing low-sulfur marine fuel oil from fluidized bed heavy oil.

This utility model relates to a special fixture for machining angle injector heads for marine fuel systems. The fixture body has a beveled positioning surface with an eccentric hole perpendicular to the bottom surface. The inner diameter of the eccentric hole precisely matches the outer diameter of the non-threaded end of the angle injector head. The bevel angle of the fixture body matches the tilt angle of the angle injector head. The beveled surface of the fixture body has at least two positioning pin holes and threaded holes for positioning and connecting the angle injector head. The positioning pins are inserted between the angle injector head and the fixture body, and the positioning hexagonal bolts pass through the mounting holes of the angle injector head and are tightly screwed into the threaded holes of the fixture body. Compared with the prior art, this utility model has a simple structure, is easy to install, has accurate positioning, high reliability, can achieve stable machining, and can be extended to the angle machining of various similar injector heads.

The present application relates to a kind of low sulfur high performance fuel oil production device, it relates to fuel oil production technical field.Low sulfur modified residual oil, hydrogenation low sulfur raffinate are used as main raw material, auxiliary agent A, auxiliary agent B prepared by special oil device are matched, reaction conditions are accurately controlled through DCS system, low sulfur high performance marine fuel oil is prepared in low temperature mild environment;Device integrates vacuum deep pull and viscosity reduction cracking combined process, light fraction can be deep-processed into three kinds of base oil, etc.Additional value products, heavy fraction is reduced in viscosity by viscosity reduction cracking, and low-temperature fluidity is improved;Auxiliary agent B is prepared by dithiophosphoric acid, molybdenum trioxide, epoxy succinic acid polymer, 2,6-naphthalene dicarboxylic acid, anhydrous toluene, phosphorous acid;Fuel oil prepared by the present application, sulfur content is lower, environmental protection is better, low-temperature fluidity is improved, and combustion efficiency is better.

The invention relates to a method for producing aviation kerosene by hydrogenation of Fischer-Tropsch synthetic oil, which comprises the following steps: carrying out hydrofining reaction by using the Fischer-Tropsch synthetic oil as raw material oil, fractionating the obtained hydrofining product into different components, and feeding into a hydrocracking reactor for deep cracking. Different components can be subjected to cracking reaction on different bed layers, excessive cracking of light fractions is effectively avoided, the total yield of the aviation fuel is greatly improved, the quality of the aviation fuel product is improved, and meanwhile, the energy consumption is reduced, and the treatment capacity and the production economy are improved.

The present application relates to the technical field of marine fuel filling, and particularly relates to a marine liquid ammonia fuel filling system, comprising the following steps: step S1, collecting data; step S2, calculating the real-time refrigeration power of the ship fuel tank in the filling process; and controlling the working state of the refrigeration system inside the ship fuel tank; step S3, controlling the filling speed through the difference between the maximum allowable refrigeration power of the ship fuel tank and the real-time refrigeration power. Through the above technical scheme, there is heat loss in the filling process, and the lost heat is much greater than the heat loss speed of the ship fuel tank in the closed state, which will cause more parts of the injected liquid ammonia to be gasified, so it is necessary to increase the refrigeration power of the ship fuel tank to make the injected fuel not be gasified too much after entering the fuel tank, so as to make the pressure of the whole filling system controllable and ensure the safety of filling.

The present application belongs to the technical field of marine fuel oil, and particularly relates to a clean marine fuel oil prepared based on ethylene tar hydrogenation product, more particularly to a No. 180 clean marine fuel oil, and further discloses a preparation method thereof. The marine fuel oil is prepared by compounding and blending ethylene tar under hydrogenation treatment, catalytic oil slurry, residue material, dilution light oil and stearate, and has the advantages of low sulfur content, moderate viscosity, good lubricity, good compatibility, good storage stability and low process cost.

The application discloses a method for preparing marine fuel by integrating methanol hydrogen production and heavy oil hydrogenation, and belongs to the technical field of heavy oil hydrogenation upgrading. The method for preparing marine fuel by integrating methanol hydrogen production and heavy oil hydrogenation comprises the following steps: S1: methanol and water vapor enter a methanol reforming reactor to prepare hydrogen-rich gas; S2: heavy oil raw materials and the hydrogen-rich gas are preheated by a heavy oil preheater and then enter a heavy oil hydrogenation upgrading reactor to perform hydrogenation upgrading; and S3: upgraded oil after hydrogenation upgrading enters a quenching reactor and a product separator in sequence, and marine fuel is obtained. The process provided by the application uses a catalyst added with a cerium modifier, has high water resistance, can realize integrated and continuous production of methanol reforming hydrogen production, heavy oil catalytic hydrogenation desulfurization, denitrification, deoxygenation and other reactions, and is high in efficiency and energy saving.

The invention relates to the technical field of marine fuel filling, in particular to a marine liquid ammonia fuel filling system which comprises the following steps: S1, collecting data; s2, the real-time refrigeration power of the ship fuel bin in the filling process is calculated; the working state of a refrigerating system in the ship fuel bin is controlled; and S3, the filling speed is regulated and controlled through the difference value between the maximum allowable refrigeration power and the real-time refrigeration power of the ship fuel bin. By adopting the technical scheme, heat loss exists in the filling process, and the lost heat is far greater than the heat loss speed of the ship fuel bin in a closed state, so that more parts of injected liquid ammonia are gasified, and the liquid ammonia is completely gasified. Therefore, the injected fuel cannot be excessively gasified after entering the fuel bin by increasing the refrigerating power of the ship fuel bin, so that the pressure of the whole filling system is controllable, and the filling safety is guaranteed.

The application discloses a kind of ship oil-containing pollutants production ship fuel oil physical and chemical treatment device, belong to environmental protection hazardous waste disposal and resource utilization technical field.The existing process long cycle, low efficiency and equipment matching problem is solved.The device includes: with steam jacket and frequency conversion stirring mechanism's reaction kettle, high speed three-phase centrifugal separator, flexible pipeline system connecting each unit, electric heating steam generator and electric control system.The application is by "chemical reaction-physical separation" two-stage process, with efficient centrifugal separation instead of natural sedimentation, processing cycle is shortened to 8 hours from several days, high efficiency of deashing and degrading, can the ash content of raw material oil is stably reduced from 1.4% above to 0.07% below, and the key indicators of the regenerated fuel oil produced meet the national standard GB / T17411-2015.The whole set of equipment is strong in adaptability, and is efficient and stable in operation.

The utility model discloses a marine fuel injector safety valve which comprises a valve body applied to a fuel injector, the valve body is provided with a hollow valve cavity, a valve element is arranged in the valve cavity, and a pressure mechanism capable of driving the valve element to move downwards is arranged at the top of the valve element. The pressure mechanism comprises an adjusting part, a pressing plate and a double-layer spiral spring, a deformation space used for installing the double-layer spiral spring is defined between the pressing plate and the valve element, and the resilience force of the double-layer spiral spring is used for driving the valve element to block the opening in the bottom of the valve cavity. An oil inlet channel communicated with the bottom of the valve cavity is arranged at the bottom of the valve body, and the oil inlet channel is of a spiral structure. According to the technical scheme provided by the utility model, the double-layer reducing reverse spiral spring is innovatively adopted and is matched with the design of the spiral oil inlet channel, so that a hydraulic damping effect is generated in the rapid opening and closing process, transient response is ensured, and mechanical oscillation is inhibited.

The invention relates to a method and system for measurement of water content of alternative marine fuels, namely methanol, ethanol or ammonia. The measuring is done during bunkering of a marine vessel. The system comprises a water content measuring device (10) which is arranged attachable to a fuel conduit (3) in a bunkering station (7) for a marine vessel (1); and is arranged to measure the water content on-line from the fuel conduit (3) during bunkering of the marine vessel (1).

This invention discloses a method for producing mixed alcohols using bio-based methyl acetate as a green hydrogen acceptor, relating to the field of biomass energy chemical technology. The method provided by this invention includes at least the following steps: adding green hydrogen and bio-based methyl acetate to a hydrogenation reaction unit; after hydrogenation, a mixture is obtained; adding the mixture to a gas-liquid separation unit; after gas-liquid separation, unreacted green hydrogen and a mixed liquid are obtained; adding the mixed liquid to a distillation unit; after distillation, unreacted bio-based methyl acetate and a mixed alcohol are obtained. The method for producing mixed alcohols provided by this invention achieves efficient green hydrogen carrying capacity and on-site consumption of wind / solar power, while simultaneously enhancing the value of bio-based acetic acid. The product can be directly used as marine fuel, aligning with the "dual carbon" goal and possessing both economic and environmental significance.

The application provides a production method and device of low-sulfur marine fuel oil, in which a first bubble breaking unit breaks raw material hydrogen into micro-bubbles, which can effectively increase the phase boundary area of hydrogen and raw material heavy oil, enhance the hydrogen dissolving process, thereby enhancing the hydrogenation reaction process, reducing the reaction pressure, reducing the equipment investment and improving the hydrogen utilization rate; a second separation unit can effectively remove H2S gas in the first gas phase product generated in the slurry bed reactor, avoids the hindering of the H2S gas to the second hydrogenation reaction of the fixed bed reactor, and improves the product quality; in addition, the first reaction product from the slurry bed reactor is separated to obtain light distillate products and first heavy distillate, which are respectively introduced into the fixed bed reactor for hydrogenation refining, thereby avoiding the rapid deactivation of the catalyst at the front end of the fixed bed reactor and prolonging the operation cycle of the equipment.

The application discloses a control monitoring system and method of a marine fuel cell system. The system comprises a hydrogen storage and supply module, at least two fuel cell power generation modules, a plate heat exchanger heat dissipation module and a cockpit module. The control monitoring system comprises a control conversion module and at least two safety monitoring modules. The control conversion module comprises a control conversion unit, a power conversion unit and a communication conversion unit. The control conversion unit is used for sending fuel supply instructions to the hydrogen storage and supply module, sending temperature adjustment instructions to the plate heat exchanger heat dissipation module, sending electric energy scheduling instructions to the power conversion unit and sending state information of the fuel cell power generation module to the cockpit module through the communication conversion unit according to the operating state of the fuel cell power generation module. The safety monitoring module is used for monitoring the operating state of the fuel cell power generation module in real time and sending the operating state to the control conversion unit and sending alarm information to the cockpit module. The monitoring precision of the fuel cell system is improved, and the safe operation of the system is ensured.

This invention discloses a residue hydrotreating system and method. The system includes a first series of devices and a second series of devices arranged in parallel. The first series of devices includes a first hydrotreating protection reaction zone, a first product gas-liquid separation zone, a first hydrotreating reaction zone, and a first gas-liquid separation zone. The second series of devices includes a second hydrotreating protection reaction zone, a second hydrotreating reaction zone, and a second gas-liquid separation zone. The liquid phase outlet of the first product gas-liquid separation zone is connected to the inlet of the second hydrotreating reaction zone, and the outlet of the second hydrotreating protection reaction zone is connected to the inlet of the first hydrotreating reaction zone. The liquid phase outlet of the second gas-liquid separation zone is connected to the inlet of a second atmospheric distillation tower. The bottom outlet of the second atmospheric distillation tower is connected to the inlet of a vacuum distillation tower. The residue removal outlet of the vacuum distillation tower is connected to the inlet of the second hydrotreating protection reaction zone. The method of this invention enables the combined operation of two sets of residue hydrotreating devices, simultaneously producing low-sulfur marine fuel and catalytic cracking feedstock, maximizing the utilization rate of the devices and catalysts.

The invention relates to an auxiliary decision-making method for ship fuel selection, which breaks through a traditional route division mode singly based on geographic distance or time, integrates docking ports, predicted navigation time, geographic position information, regulation region boundaries and fuel information conditions in a ship route plan, breaks through the traditional route division mode, and improves the ship fuel selection efficiency. Finely dividing the set route into a plurality of small route segments; according to the division mode, the actual conditions of all the legs can be accurately matched, and a more accurate basis is provided for follow-up fuel selection. When fuel is selected in each leg, factors in multiple aspects such as fuel cost, regulatory requirements and operation states (such as cargo capacity) of the ship are comprehensively balanced. And different fuels are flexibly switched and used, so that the optimal balance between the economical efficiency and compliance of ship operation is realized. The relevance between different legs and dynamic changes of laws and regulations and cost are fully considered, the purpose of lowest total fuel cost is achieved from the global perspective, and meanwhile it is ensured that the ship strictly meets the requirements of the laws and regulations all the time.

A method for producing marine fuel oil includes: 1) reacting feedstock oil with a catalytic conversion catalyst in a catalytic conversion reactor to obtain a reaction product containing polycyclic aromatic hydrocarbons (PAHs) comprising 8-25 wt% propylene and 15-50 wt% of the feedstock oil, with an initial boiling point volumetric distillation temperature of not less than 250°C; 2) hydrodesulfurizing the PAH-containing catalytic cracking distillate oil to obtain a low-sulfur hydrotreated distillate oil, wherein the sulfur content of the low-sulfur hydrotreated distillate oil is not greater than 0.1%; and 3) blending the low-sulfur hydrotreated distillate oil as a low-sulfur marine fuel oil component with vacuum residue to obtain marine fuel oil. The method of this invention can produce a large quantity of fuel oil components, resulting in significant economic and social benefits.

The invention discloses a fuel cell system with continuous online communication and a power distribution method thereof. The system comprises a host high-voltage power supply, a host standby low-voltage power supply, a DCL, a loop I and a loop II, the host high-voltage power supply converts high-voltage electricity into low-voltage power supply output through a DCL, and is in power supply communication connection with the controller, the hydrogen concentration sensor and low-voltage parts through a loop I; the host standby low-voltage power supply is in power supply communication connection with the controller, the hydrogen concentration sensor and the low-voltage parts through a loop II; the control circuit part on the first loop is composed of a coil of the KM1, a normally-closed circuit of the KM2 and a normally-closed circuit of the KM1. The control circuit part on the second loop is composed of a switch S2, a coil of the KM2 and a normally-closed circuit of the KM1. The invention is applied to a marine fuel cell system, and aims to solve the risk of communication disconnection of the marine fuel cell system so as to ensure the safety of equipment and personnel.

The present application relates to the field of processing inferior residual oil, and discloses a method for processing inferior residual oil, which comprises the following steps: (1) performing a mild catalytic cracking reaction on inferior residual oil I to obtain a mild catalytic cracking reaction product; (2) separating the mild catalytic cracking reaction product to obtain catalytic cracking heavy oil; (3) performing a hydrodesulfurization reaction on the catalytic cracking heavy oil to obtain a hydrodesulfurization reaction product; and (4) separating the hydrodesulfurization reaction product to obtain hydrogenated heavy oil. The method for processing inferior residual oil provided by the present application combines catalytic cracking heavy oil hydroprocessing and catalytic cracking, can maximize the production of light oil and low-sulfur marine fuel oil from inferior residual oil, and thus reduces the production cost of the light oil and low-sulfur marine fuel oil prepared by the method.

This application discloses an automatic mixing and intelligent control method for marine fuel refueling enhancers, belonging to the field of marine fuel refueling technology. Based on the relationship between the main fuel flow fluctuation amplitude and a preset threshold, a PID control algorithm or fuzzy control algorithm is adopted. The atomization pressure threshold is calibrated based on the enhancer viscosity and nozzle diameter. The air pressure of the pneumatic diaphragm pump is adjusted first to meet the threshold, and then the opening of the adjustable proportional pneumatic regulating valve is fine-tuned to match the fuel flow ratio. When the fuel flow fluctuation reaches the compensation threshold, a gradual proportional correction strategy is initiated. When any core parameter deviates from the set range, a linkage control is triggered based on linear interpolation. After accumulating multiple batches of data, a dedicated operating condition parameter library is generated through improved K-means clustering and multiple linear regression analysis, achieving automatic matching of optimal control parameters when starting a new operating condition. This method achieves precise adaptive control of the enhancer ratio, efficient mixing uniformity, comprehensive safety protection, and intelligent closed-loop iteration of data.

The application discloses a method for producing marine fuel oil by atmospheric residue hydrogenation, and belongs to the technical field of marine fuel oil production, which comprises the following steps: (1) mixing hydrogen with atmospheric residue as raw oil after the raw oil is heated by a raw oil heater and exchanged with four effluents of a hydrogenation reactor to obtain mixed raw material; (2) heating the mixed raw material to a certain temperature by a mixed raw material heating furnace, then feeding the mixed raw material into a hydrogenation reactor one through a raw material three-way valve to remove solid particles existing in the material; the reaction effluent of the hydrogenation reactor one is sequentially fed into a hydrogenation reactor two and a hydrogenation reactor three to sequentially perform hydrogen demetallization and hydrogen desulfurization reactions; (3) mixing the reaction effluent of the hydrogenation reactor three with recycled oil obtained from a product fractionation system, then feeding the mixture into a hydrogenation reactor four to perform slow cracking reaction; (4) feeding the reaction effluent of the hydrogenation reactor four into a separator system to perform gas-liquid separation, mixing the separated gas phase effluent with new hydrogen to obtain mixed hydrogen, then mixing the mixed hydrogen with the hot raw oil in the step (1), and repeating the steps (2)-(4); and (5) feeding the liquid phase effluent of the separator system into a product fractionation system to perform separation, and obtaining fuel gas, naphtha, marine fuel oil one and marine fuel oil two. The method has the advantages of reducing energy consumption, improving product quality and flexibly adjusting product distribution by improving the hydrogenation process flow of the atmospheric residue.

The utility model discloses a drainage system of a marine fuel cell, which relates to the technical field of ship equipment and comprises a fuel cell, a water collector and a lifting drainage component. The fuel cell is provided with a discharge pipe for discharging waste water and waste gas; the discharge pipe is communicated with the water collector; the lifting drainage assembly comprises a water suction pump, a water suction pipe, a water tank and a drainage pipe, the water suction pump is located in the water collector, and the two ends of the water suction pipe communicate with the water suction pump and the water tank correspondingly, so that the water suction pump can pump waste water in the water collector to the water tank for storage; the water tank is located above the water level outside the ship, so that waste water in the water tank can be discharged out of the ship by virtue of self gravity, the waste water discharging convenience of the fuel cell is improved, the risk of waste water backflow caused by the fact that the fuel cell cannot discharge the waste water is reduced, the waste water in the water tank can be supplied to the ship for recycling, and the resource utilization rate is improved.

The invention provides a ship fuel filling device and a ship fuel filling method, the filling device comprises a vehicle body, a filling system and an inerting system, and a sealing cavity is formed in the vehicle body. And the filling system is arranged in the sealing cavity. The filling system comprises a liquid-state filling pipeline, a gas-state circulating pipeline and a release valve. The first end of the liquid filling pipeline forms a liquid inlet connector, and the second end of the liquid filling pipeline forms a liquid outlet connector. The first end of the gas-state circulating pipeline forms a gas inlet connector, and the second end of the gas-state circulating pipeline forms a gas outlet connector. And the release valve is arranged on the liquid filling pipeline. The inerting system is arranged in the vehicle body and comprises a nitrogen inlet, and the nitrogen inlet is formed in the vehicle body. According to the ship fuel filling device, the filling system and the inerting system are both integrated on the vehicle body, the filling device can be conveniently moved to the filling position to conduct ship fuel filling operation, and the deployment efficiency is high.

This invention discloses a sustainable fuel digital tracer system, comprising at least two chemical tracers added at predetermined concentration ratios, which constitute a unique identification code for each batch of fuel. The at least two chemical tracers are selected from methoxyacrylate compounds, or at least one is selected from methoxyacrylate compounds, with the remainder selected from at least one of benzoate compounds, p-hydroxybenzoate compounds, and sorbate compounds. The tracers of this invention are all pure organic small molecules free of metals and halogens, achieving "harmless passage" to the engine after combustion. This system can accurately decode fuel at low concentrations, possesses excellent cross-fuel versatility, and cleverly meets the shelf-life requirements of marine fuels, achieving low-cost, high-precision fuel authenticity verification and accurate traceability.

A multi-stage process for reducing the production of a Product Heavy Marine Fuel Oil from Distressed Fuel Oil Materials (DFOM) involving a pre-treatment process that transforms the DFOM into Feedstock HMFO which is subsequently sent to a Core Process for removing the Environmental Contaminates. The Product Heavy Marine Fuel Oil complies with ISO 8217 for residual marine fuel oils and has a sulfur level has a maximum sulfur content (ISO 14596 or ISO 8754) between the range of 0.05 mass % to 1.0 mass. A process plant for conducting the process is also disclosed.

The present application relates to the field of processing high sulfur residue oil, and discloses a method for processing high sulfur residue oil, which comprises the following steps: (1) carrying out a hydrodesulfurization reaction on a mixed raw material containing high sulfur residue oil and catalytic cracking heavy oil I, to obtain a hydrodesulfurization reaction stream; (2) separating the hydrodesulfurization reaction stream to obtain hydro-wax oil and hydro-reduced residue I; (3) carrying out a mild catalytic cracking reaction on the hydro-wax oil and a part of the hydro-reduced residue I, to obtain a mild catalytic cracking reaction stream; (4) separating the mild catalytic cracking reaction stream to obtain catalytic cracking heavy oil I; and (5) blending a part of the catalytic cracking heavy oil I with a part of the hydro-reduced residue I to obtain low-sulfur marine fuel. The method for processing high sulfur residue oil can produce light oil and low-sulfur marine fuel simultaneously and in large quantities, thereby reducing the production cost of the light oil and low-sulfur marine fuel.

This invention discloses a process for producing distillate-type marine fuel oil, comprising: (1) a hydrorefining process: using atmospheric and vacuum gas oil and residue oil as raw materials, the raw materials are sent to a hydrorefining unit for hydrorefining to obtain hydrorefined oil; (2) a fractionation process: the hydrorefined oil is sent to a first stripping tower, where hydrogen sulfide and light hydrocarbon components generated by the hydrorefining reaction are removed from the top of the tower, and the bottom oil is heated by a heater and then enters a fractionation tower; naphtha is extracted from the top of the fractionation tower, heavier components are removed from the bottom, and MGO component oil is extracted from the side stream; (3) a stripping process: the MGO component oil is sent to a second stripping tower to remove light components from the MGO component oil to obtain MGO product. This invention, by using a residue hydrorefining unit and optimizing the process parameters of the residue hydrorefining unit, enables the byproduct MGO component oil from residue hydrorefining to directly meet the usage standards of MGO fuel oil, thereby reducing the energy consumption of refineries and the processing cost of MGO fuel oil.