149 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 provides a marine fuel leakage control method and system, and belongs to the technical field of ship engineering.The method comprises the steps that multi-physics field data are collected, and the multi-physics field data comprise marine fuel concentration data, temperature data and pressure data; performing feature extraction on the marine fuel concentration data, the temperature data and the pressure data to obtain marine fuel leakage feature parameters; the marine fuel leakage characteristic parameters are input into a marine fuel leakage early warning model for prediction, and the marine fuel leakage probability and the marine fuel leakage position are obtained; and generating a marine fuel leakage control instruction based on the marine fuel leakage probability and / or the marine fuel leakage position. According to the method, the leakage probability and position of the marine fuel are accurately predicted, and the safety of ships and personnel is guaranteed.

The invention relates to the technical field of marine fuel oil additives, and particularly provides a marine fuel oil purification synergist and a preparation method thereof. The marine fuel oil purification synergist comprises the following components in percentage by mass: 8%-12% of a sulfur capturing agent, 15%-20% of a core-shell dispersing agent, 5%-8% of a lubricating agent, 0.5%-1% of an antioxidant, 1%-2% of a pour point depressant and the balance of a solvent. The marine fuel oil purification synergist has the advantages of high flash point, sulfur inhibition, combustion enhancement and dispersion stability. The multi-component synergistic system not only greatly improves the combustion efficiency of the marine fuel oil, but also effectively inhibits the emission of harmful substances, obviously reduces the carbon deposition and wear of an engine, and keeps the cleanliness of a fuel oil system. In practical application, the synergist shows excellent environment-friendly benefits and economic benefits, and a green fuel solution which can meet increasingly strict requirements of environment-friendly laws and regulations and can reduce the operation cost is provided for the ship industry.

This invention discloses an electric heat tracing laying device and its usage method for marine fuel oil pipelines, belonging to the field of electric heat tracing technology. The electric heat tracing laying device for marine fuel oil pipelines includes a traveling frame, and further includes: a traveling assembly mounted on the traveling frame for driving the traveling frame to move axially along the pipeline; the bottom of the traveling frame has an opening for the pipeline to enter; a rotating seat rotatably mounted on the traveling frame, on which an electric heating tape shell is mounted, and the electric heating tape shell releases the electric heat tracing tape outward through a discharge port; and a driving unit mounted on the traveling frame and connected to the traveling assembly. This invention replaces manual labor with mechanical automation, realizing the entire process of spiral winding of the electric heating tape, laying of the aluminum foil tape heat-conducting layer, and segmented fixing of the pressure-sensitive tape, solving the problems of low efficiency and insecure fixing in traditional methods, and significantly improving the safety and maintenance efficiency of marine fuel oil pipelines in low-temperature environments.

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 application provides a method for blending and producing RMG180 marine fuel oil and the produced RMG180 marine fuel oil, and relates to the technical field of production of RMG180 marine fuel oil. The application solves the problem of blending high-viscosity heavy oil slurry into low-sulfur marine fuel by removing solid matters after mixing high-viscosity heavy catalytic oil slurry and catalytic diesel oil, realizes the hierarchical utilization of VRDS atmospheric residue oil, reduces the production cost of marine fuel, and improves the quality of catalytic cracking raw materials.

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.

A method of producing hydrocarbons includes acidifying and extracting fatty acids from a feed solution that includes fatty acid salts using carbon dioxide (CO2); separating CO2 from the extracted fatty acids; recycling at least a portion of the separated CO2 to be used as the extractant; contacting at least a portion of the extracted fatty acids with a ketonization catalyst to produce ketones; contacting at least a portion of the ketones with a hydrodeoxygenation catalyst in the presence of hydrogen to produce n-paraffins. The n-paraffins may be subjected to hydrocarbon refining to produce hydrocarbons suitable for use as a sustainable aviation fuel, a sustainable diesel fuel, or a sustainable marine fuel.

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 discloses an electric heat tracing laying device for a marine fuel oil pipeline and a using method of the electric heat tracing laying device, and belongs to the technical field of electric heat tracing. An electric heat tracing laying device for a marine fuel pipeline comprises a walking frame and further comprises a walking assembly arranged on the walking frame and used for driving the walking frame to move in the axial direction of the pipeline, and an opening allowing the pipeline to enter is formed in the bottom of the walking frame; the rotating seat is rotationally arranged on the walking frame, an electric heating tape shell is arranged on the rotating seat, and the electric heating tape shell releases an electric heating tape outwards through the discharging opening; the driving part is arranged on the walking frame and is connected with the walking assembly; manual work is replaced with mechanical automation, the whole-process operation of spiral winding of the electric tracing band, laying of the aluminum foil adhesive tape heat conduction layer and segmented fixing of the pressure-sensitive adhesive tape is achieved, the problems that a traditional method is low in efficiency and not firm in fixing are solved, and the safety and maintenance efficiency of the marine fuel oil pipeline in the low-temperature environment are remarkably improved.

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).

The invention discloses a method for simultaneously removing ash content, reducing an acid value and reducing total precipitation of marine oily pollutants, and belongs to the technical field of waste oil recycling. The invention aims to solve the problems that the process of treating oily pollutants of ships in the prior art is complicated, and various impurities cannot be efficiently removed at the same time. The preparation method comprises the following steps: heating a ship oily pollutant raw material to 75-85 DEG C, adding a composite treatment agent which accounts for 5% of the mass of the ship oily pollutant raw material and is formed by compounding a polyoxypropylene polyoxyethylene ether block copolymer, triethanolamine, diethylenetriamine and solvent oil, and reacting at constant temperature for 1-2 hours; adding water accounting for 5% of the mass of the raw materials, and continuing constant-temperature reaction for 1-2 hours; and finally, heating the mixture to 90-95 DEG C, and carrying out centrifugal separation to obtain the qualified marine fuel oil. Through the one-agent multi-effect and integrated process, the process is simple, ash, acidic substances and total precipitates in the raw materials can be efficiently and synergistically removed, the product quality meets the national standard requirement, and the method has remarkable economic and environment-friendly benefits.

The utility model relates to a methanol unit pipeline emptying and monitoring device, and relates to the technical field of ship fuel. The device comprises a methanol storage cabinet, the methanol storage cabinet is communicated with a methanol delivery pump, the output end of the methanol delivery pump is communicated with a pneumatic diaphragm pump, the output end of the pneumatic diaphragm pump is communicated with the methanol storage cabinet, and the input end and the output end of the pneumatic diaphragm pump are both provided with remote control valves. And the methanol storage cabinet, the methanol delivery pump and the pneumatic diaphragm pump are communicated through pipelines. The methanol supply system has the effects of effectively emptying and monitoring methanol when the methanol supply system is shut down.

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 invention discloses a shared ship LNG fuel tank container, which belongs to the field of LNG fuel storage technology. The shared ship LNG fuel tank container includes: a lifting frame; a tank body, which is arranged in the lifting frame; a cold box structure, which is arranged in the lifting frame and connected to the tank body; a storage box, which is arranged in the lifting frame and connected to the end face of the cold box structure away from the tank body; and a liquid collection tray, which is arranged at the bottom of the storage box. The shared ship LNG fuel tank container of the present invention can complete the reloading operation when the ship docks and unloads, without the need for waiting time for refueling, and the fuel supply is fast.

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.