212 results about "Methanol fuel" patented technology

The invention relates to the field of methanol fuels, and particularly discloses a synthetic environment-friendly methanol fuel and a preparation method thereof, the synthetic environment-friendly methanol fuel comprises the following raw materials by weight: 50-70 parts of methanol, 15-30 parts of biomass blend oil, 1-4 parts of a mutual solvent, 0.5-2 parts of a cetane number improver, 0.01-0.05 part of a cleaning dispersant, 0.002-0.01 part of a metal corrosion inhibitor, 0.003-0.015 part of an acid neutralizer, and 0.005-0.02 part of a stabilizer. The biomass blend oil is prepared from waste animal and vegetable oil through transesterification and hydrogenation upgrading processes. According to the invention, the biomass blend oil is prepared from waste animal and vegetable oil through ester exchange and hydrogenation upgrading processes, so that resource utilization of wastes is realized, and more importantly, the inherent defects of too low cetane number and insufficient heat value of methanol are effectively overcome due to the characteristics of high cetane number, high saturation and low oxygen content of the biomass blend oil; the fuel can be stably and efficiently combusted in a compression ignition engine, meanwhile, emission of particulate matter and uncombusted hydrocarbon is remarkably reduced, and environmental friendliness is embodied from the source.

The invention discloses a flux-based preparation method of metal organic gel, which is characterized in that a series of metal organic gel materials are prepared by controlling proportion and temperature by taking ferric salt and any other mixed metal salts and organic ligands as raw materials, and the metal organic gel materials are directly used as an anode catalyst of a methanol fuel cell. The synthesis method is simple, the reproducibility is good, batch production can be achieved, and the prepared metal organic gel has the excellent methanol fuel cell anodic oxidation performance.

The invention belongs to the technical field of catalyst preparation and methanol fuel cells, and particularly relates to a Pt-based composite catalyst, a membrane electrode and a preparation method and application of the Pt-based composite catalyst and the membrane electrode. The preparation method of the Pt-based composite catalyst comprises the following steps: carrying out a hydrothermal reaction on graphene oxide, nickel salt and a nitrogen source under an alkaline condition, sequentially carrying out dipping treatment and reduction treatment on the obtained Ni (OH) 2 / NC material and a platinum source in water, mixing the obtained Pt / Ni (OH) 2 / NC material with polypyrrole and water, and carrying out ultrasonic treatment to obtain the Pt-based composite catalyst. And dispersing the obtained Pt / Ni (OH) 2-PPy / NC catalyst in a first mixed solution obtained by heating polyvinyl alcohol, glycerol, ethylene glycol, trehalose and water, and carrying out circulating freezing-unfreezing treatment to obtain the Pt-based composite catalyst. When the Pt-based composite catalyst provided by the invention is used as an anode catalyst of a membrane electrode, the low-temperature performance of a methanol fuel cell can be remarkably improved.

The utility model relates to a filter for methanol fuel, and relates to the technical field of methanol fuel filters. The filter comprises a filter mounting pipe, the two ends of the filter mounting pipe are open, the top wall of the filter mounting pipe is communicated with a vertical mounting pipe, the sections of the filter mounting pipe and the vertical mounting pipe are T-shaped, a filter body is arranged in the vertical mounting pipe, a sealing cover is arranged at the top end of the vertical mounting pipe, and the top end of the filter body is connected with the sealing cover. A locking assembly used for fixing the sealing cover to the vertical mounting pipe is arranged on the vertical mounting pipe. The utility model has the effects of simplifying the design of the filter system and improving the convenience and reliability of maintenance and operation of the filter.

The invention aims to provide a single needle valve type high-response methanol-diesel injector based on opposed electromagnetic valve control, and belongs to the field of engines. Opposite type double-medium channel control assemblies are installed in an ejector connector body, an ejector middle body and an ejector throttling block, a methanol / diesel shared nozzle assembly is installed in a nozzle body, a diesel connector and a methanol connector are installed on the side of the ejector connector body, a high-pressure diesel channel is arranged in the diesel connector, and a high-pressure methanol channel is arranged in the methanol connector. Free connection and disconnection of an internal high-pressure methanol path and an internal high-pressure diesel path can be controlled, then independent injection of methanol fuel and diesel fuel is achieved, the two fuel injection modes are controlled through the same needle valve, the fuel is injected through the same injection hole, and the advantages of being high in reliability and simple in structure are achieved. And after methanol / diesel oil injection is finished, rapid cut-off of an internal passage of the injector and rapid seating of the needle valve can be achieved, and the response characteristic of fuel injection mode switching of the injector is improved.

The invention discloses a layered multi-dimensional fault diagnosis method and system for a methanol fuel ship power system, and relates to the technical field of fault diagnosis and monitoring of ship power systems, and the method comprises the steps: dividing into four coupling levels along a path of methanol supply-chemical electric energy conversion-motor propulsion-whole ship energy efficiency; constructing a hierarchical coupling diagnosis model comprising a local diagnosis function of each level, a system overall diagnosis function, a cooperative monitoring and diagnosis iteration relation and a coupling correlation model; collecting and preprocessing real-time operation data of each hierarchy, inputting the real-time operation data into the model for fault diagnosis and cross-hierarchy association analysis, obtaining and outputting a diagnosis result, and generating differentiated disposal suggestions; the method is accurate in diagnosis value quantification, high in objectivity, extremely simple and practical in hierarchical correlation formula, and excellent in real-time performance; coupling fault identification is efficient, coverage is comprehensive, cascade fault tracing is accurate, and disposal is efficient; and the adaptability and the reliability are high.

The application discloses a kind of based on digital twinning methanol fuel supply system intelligent operation and maintenance platform, belong to ship power and industrial automation technical field.The platform includes data acquisition and management module, digital twinning state mapping module, multi-working condition feature extraction and diagnosis module, operation and maintenance decision and evaluation module and visual display module.Platform carries out real-time acquisition, time synchronization and quality gate control fusion to operating parameter and safety monitoring data, and constructs physical residual characteristic quantity based on digital twinning model output and real-time observation data;Combining fault sensitive feature extraction and evidence fusion realizes fault identification, and passes through remaining useful life prediction and operation and maintenance optimization output under safety constraint maintenance suggestion, can be used for methanol fuel supply system state monitoring, fault diagnosis, life prediction and operation and maintenance decision support.

The invention provides a cylinder oil composition suitable for a methanol fuel ship and a preparation method of the cylinder oil composition, and particularly relates to the technical field of lubricating oil. The cylinder oil composition suitable for the methanol fuel ship comprises the following components in percentage by mass: 5.0%-20% of a clearing agent, 1.0%-8.0% of an ashless dispersant, 0.5%-1.5% of a composite antioxidant, 0.5%-3% of an anti-wear agent, 0.01%-1% of a metal deactivator and the balance of base oil, the detergent is composed of high-base-number synthetic calcium sulfonate, low-base-number synthetic calcium sulfonate, high-base-number calcium boride sulfonate and high-base-number sulfurized calcium alkyl phenolate. According to the cylinder oil composition for the methanol fuel ship, the scheme of the purification dispersant is optimized, and a plurality of components such as the metal deactivator are introduced for combination, so that the obtained cylinder oil composition for the methanol fuel ship improves the wear resistance and the corrosion resistance of an oil product when the oil product is polluted by methanol and formic acid, and can meet the performance requirements when a marine two-stroke engine uses methanol fuel.

The present application relates to the technical field of ship fuel supply system control, and discloses a dual-ear C-shaped LNG fuel tank and methanol fuel adaptive switching control system, which comprises a fuel state sensing module, a switching logic decision module, an actuator control module, a safety redundancy guarantee module and a state feedback recording module. The fuel state sensing module collects fuel parameters and actuator operating state data and normalizes them; the switching logic decision module builds a model to simulate switching dynamic characteristics and actuator response characteristics and performs parameter adaptation; the actuator control module builds an algorithm to calculate switching pressure threshold values, flow matching values and valve group action time sequences; the safety redundancy guarantee module evaluates switching safety; and the state feedback recording module performs secondary evaluation in combination with environmental conditions when there is a risk. The system realizes adaptive switching of LNG and methanol fuel, and improves switching accuracy, system stability and safety.

The invention provides a two-stroke air entrapment direct injection methanol engine. The two-stroke air entrapment direct injection methanol engine comprises an air cylinder body crankcase assembly, a crankshaft assembly, an engine oil lubricating assembly, an air inlet assembly, an oil supply assembly, a starting assembly, an air pump assembly and a control assembly. According to the application, the methanol use environment is met by adopting the design of internal preheating and combustion chamber preheating of the special fuel pump for methanol and heat energy generated by air compression in the fuel rail, and fuel atomization is promoted by gas pressure and high-speed flow generated by air compression of the direct-connected air pump assembly through a gas-entrained injection technology; meanwhile, uniform mixing of gas and fuel oil is enhanced, homogeneous combustible mixed gas is more easily formed in the combustion chamber, the first-stage fuel oil pump and the second-stage fuel oil pump are connected in series, and the stability of the using pressure of methanol fuel oil is effectively guaranteed; according to the preheating function, the engine can rapidly enter the optimal working temperature in the low-temperature environment during low-temperature starting and low-temperature operation, and therefore the emission performance and the working performance of the engine are improved.

The application discloses a starting device for a marine methanol engine, which comprises a compressed air control unit, a compressed air starting unit, a supplementary combustion unit, a rotating speed signal sensor and a plurality of Hall sensors. The compressed air control unit comprises a pressure reducing valve, a first one-way valve and a first electromagnetic reversing valve. The compressed air starting unit comprises a first electromagnetic on-off valve, a second electromagnetic reversing valve, a first pneumatic reversing valve, a second one-way valve, a second pneumatic reversing valve and a silencer. The supplementary combustion unit comprises a second electromagnetic on-off valve, a common rail pipe, a supplementary combustion gas injection valve, a third one-way valve and a third electromagnetic on-off valve. The starting device can quickly realize the cold state starting and the hot state starting of the marine methanol engine by using a small number of valve combinations, has high automation degree and good integration degree, and conveniently and efficiently solves the difficult starting problem of the marine methanol fuel engine.

The application provides a methanol engine with an internal direct injection structure applied to the field of methanol engines, wherein the valve is directly installed in the interior of the cylinder, the methanol fuel can be directly atomized and injected in the interior of the cylinder, loss caused by injection of the methanol fuel in the intake pipe can be avoided, the first fuel injection is performed when the piston moves from the top dead center to 1 / 2 of the total stroke, the second fuel injection is performed when the piston moves to the bottom dead center position, the two fuel injections are performed in stages, the mixing effect of the two fuel injections can be enhanced by the disturbance of the air flow in the cylinder, the methanol fuel combustion efficiency is improved to a certain extent, fuel loss in the starting process of the methanol engine is reduced, the methanol fuel is fully combusted, the working efficiency is effectively improved, and the methanol engine is more economical and environmentally friendly.

The application discloses a methanol injection method of a methanol engine, relates to the methanol engine, and transmits methanol fuel sprayed from a methanol nozzle in a spiral transmission mode to separate atomized methanol fuel from methanol droplets, wherein the atomized methanol fuel is transported into a combustion chamber, and the methanol droplets are transported to a methanol nozzle injection side to be heated and evaporated. The application further discloses a methanol injection device and a calibration method of the methanol engine. The application fully utilizes the energy of air to evaporate the methanol droplets, guarantees the evaporation effect of methanol particles, and improves the atomization efficiency of the suspended droplet particles.

The invention aims to provide a methanol / diesel oil dual-fuel single needle valve injector, and belongs to the field of engines. A methanol hydraulic on-off control assembly is installed in the methanol connector body and the on-off valve body, a diesel hydraulic on-off control assembly is installed in the diesel connector body and the ejector intermediate body, a methanol-diesel common nozzle assembly is installed in the nozzle body, a methanol pipeline connector is installed on the side of the methanol connector body, and a methanol pipeline is arranged in the methanol pipeline connector. A diesel pipeline connector is installed on the side of the diesel connector body, a diesel pipeline is arranged in the diesel pipeline connector, and a high-pressure methanol path and a high-pressure diesel path are arranged in the diesel connector body. The two fuel injection modes are controlled through the same needle valve, fuel is injected through the same injection hole, and an inner and outer needle valve nested structure which is high in machining difficulty and poor in reliability is avoided. In addition, in the methanol and diesel oil injection mode, diesel oil is introduced into a pressure chamber of the injector, and corrosion damage to a precise throttling hole in the injector caused by methanol fuel is avoided.

The utility model discloses a front mounting structure of a methanol fuel tank of an excavator, which relates to the technical field of excavator accessory mounting and comprises a front plate, an inner vertical plate, an outer vertical plate and a bottom plate, and the bottom plate serves as a bottom supporting surface of the fuel tank and is fixedly arranged at the bottoms of the inner vertical plate and the outer vertical plate; the front side plate is a bent plate, the inner vertical plate and the outer vertical plate are vertically arranged on the two sides of the front side plate respectively, and the front side plate, the inner vertical plate and the outer vertical plate form a three-face enclosure and are fixedly connected with the fuel tank through the bottom plate so that the fuel tank can be installed on an excavator platform from top to bottom. The front side plate, the outer vertical plate, the inner vertical plate and the bottom plate are combined to form the front installation of the fuel tank body, and the fuel tank body is fixedly installed on an excavator platform from top to bottom through bolts, so that the shielding of a rotary platform on the whole machine at the bottom can be avoided, and the installation of a large-volume methanol fuel tank can be conveniently realized; and moreover, the bottom stress of the fuel tank can be effectively reduced, and the mounting stress of the bottom of the fuel tank is ensured to be within the standard of stainless steel materials.

The invention discloses an oil and gas management off-grid electric valve with a methanol fuel cell, and relates to the technical field of oil and gas conveying pipeline control equipment, in particular to the oil and gas management off-grid electric valve with the methanol fuel cell. The device comprises an electric valve, a photovoltaic panel, an energy storage lithium battery, a methanol fuel cell and a methanol barrel which are arranged on an oil-gas pipeline. The photovoltaic panel converts light energy into electric energy to charge the lithium battery, and the lithium battery provides operation power for the valve. The methanol fuel cell is connected with the lithium battery and is started and stopped under the control of the voltage of the lithium battery. The device preferably further comprises a power management control system which is used for monitoring the voltage of the lithium battery, starting the fuel battery to charge the lithium battery when the voltage is lower than a lower limit, and closing the fuel battery when the voltage is higher than an upper limit, so that automatic management and supplement of energy are realized. According to the invention, a hybrid power supply mode with photovoltaics as a main mode and methanol fuel cells as an auxiliary mode is utilized, and the long-term off-grid stable power supply problem of oil and gas valves in remote areas is solved.

The invention discloses an engine ignition control method and a related device, and relates to the technical field of engine control. The engine ignition control method comprises the steps that the actual water content of methanol fuel of a target engine is obtained; adjusting the ignition energy of an ignition coil according to the actual water content so as to perform ignition control on the target engine; wherein the ignition energy of the ignition coil is in positive correlation with the actual water content. The water content of the methanol fuel of the engine can be measured in real time, then the ignition energy of the ignition coil is adjusted according to the water content, the higher the water content of the methanol fuel is, the larger the corresponding ignition energy of the ignition coil is, and therefore the relatively rarefied methanol fuel can be successfully ignited; therefore, stability of combustion in an engine cylinder is guaranteed, and engine power is improved.

The invention belongs to the field of fuel cells, and provides a numerical simulation optimization method and system for a direct methanol fuel cell, and the method comprises the steps: determining a flow field geometric structure which is set as a snakelike topological path formed by continuous multiple sections of turn-back units; and determining the initial methanol permeation current density, and performing dynamic iteration on the initial methanol permeation current density to determine the real-time permeation current density of methanol diffusion in the flow field geometric structure. A dynamic permeation current density iterative algorithm is provided, electrochemical reaction and mass transfer processes are coupled in real time, permeation current density is updated in real time and coupled to cathode overpotential calculation, permeation current prediction errors are reduced to below 0.78%, and compared with the prior art, the precision is improved by more than 6 times.

The invention discloses a flexible methanol fuel cell and a humanoid robot power supply system, and relates to the technical field of methanol power generation, the flexible methanol fuel cell comprises a flexible bag body, the two ends of the flexible bag body are provided with a liquid inlet and a liquid outlet, and the side surface is provided with a mounting opening; the membrane electrode is sealed in the mounting opening; the anode diffusion layer and the cathode diffusion layer are respectively fixed on the anode side and the cathode side of the membrane electrode, and fine wire meshes are fixed on the anode diffusion layer and the cathode diffusion layer. A humanoid robot power supply system comprises a flexible methanol fuel cell, a DMFC energy management system and an energy storage cell, and the flexible methanol fuel cell serves as a power generation unit and is integrally distributed on the outer surface of a robot. According to the flexible methanol fuel cell disclosed by the invention, the whole cell body has good bending, twisting and tensile elasticity, can adapt to various irregular surfaces and dynamic deformation scenes, and is light in weight and thin in thickness. The flexible methanol fuel cell is used as a power generation skin to be integrated on the robot, the mass energy density is improved, and the endurance working time is prolonged.

The utility model discloses a methanol fuel spraying device which comprises a base, and spraying assemblies are evenly installed on the top wall of the base. The spraying assembly comprises a plurality of steering shafts, and a plurality of installation cavities are evenly formed in the top wall of the base. According to the methanol fuel spraying device, the feeding pipe is communicated with the external supply pipe, methanol fuel is conveyed into the feeding pipe and passes through the connecting pipe, then atomized fuel is sprayed out of the atomizing nozzle and enters the combustion chamber to be in full contact with air to be combusted, the atomized methanol fuel makes more sufficient contact with the air, combustion is more thorough, and the combustion efficiency is improved. The spraying position of the atomizing nozzle can be adjusted, the mounting base is driven to rotate in the corresponding mounting cavity by rotating the abutting bolt, the steering shaft is driven to rotate in the mounting cavity when the mounting base rotates, and then the mounting base drives the connecting pipe and the atomizing nozzle to rotate to a proper angle to complete adjustment.

The invention discloses a high-stability pure methanol vehicle fuel composition as well as a preparation method and application thereof. The high-stability pure methanol vehicle fuel composition comprises the following components in percentage by mass: 95% of high-purity methanol; the composite functional additive comprises the following components in percentage by mass: 0.2% of a combustion-supporting synergist, 1.5% of a compatible stabilizer, 1% of an anti-explosion regulating agent, 0.6% of a vapor pressure regulator, 0.1% of a metal corrosion inhibitor, 0.15% of a non-metal protective agent, 0.04% of an antioxidant, 0.2% of a purification dispersant, 0.4% of a lubrication improver and 0.0105% of an auxiliary agent. The problems that in the using process of existing pure methanol vehicle fuel, the formula is complex, cost is high, long-term storage stability is poor, cold starting performance and lubricity defects cannot be considered at the same time, and the use requirement of a methanol vehicle is difficult to meet are solved.

The utility model discloses a methanol fuel liquid level sensor, and belongs to the technical field of liquid level sensors, the methanol fuel liquid level sensor comprises an accommodating part and a liquid level detection part, the accommodating part comprises an oil tank main body, one end of the oil tank main body is provided with a communicating vessel assembly, and the liquid level detection part is arranged on the inner side of the communicating vessel assembly; the liquid level detection component comprises a sensor component arranged on the inner side of the communicating vessel component, a physical liquid level component is arranged outside the communicating vessel component, and the physical liquid level component is matched with the sensor component. Through the arrangement of the physical liquid level assembly, a liquid level observation and measurement structure with the physical property can be achieved in cooperation with the sensor assembly, the remaining situation of fuel in the fuel tank can be obtained through the structure when a sensor fails or is damaged, and practicability is improved.

The application provides a dual-fuel engine starting method, device, storage medium and system, the engine comprising: a methanol injector and a diesel injector, the methanol injector being installed to an air inlet pipe of the engine, and the diesel injector being installed to a cylinder cover of a cylinder of the engine, the method comprising: receiving and responding to an engine starting instruction, acquiring a plurality of temperature parameters, and determining a minimum temperature parameter in all the temperature parameters; when the minimum temperature parameter is less than a preset temperature, controlling the diesel injector to inject a preset first injection amount of diesel into the engine cylinder; determining a speed change rate of a process in which an engine speed changes from static to a first preset speed, and determining a second injection amount of diesel and a third injection amount of methanol according to the speed change rate and simultaneously controlling the diesel injector and the methanol injector to inject, so as to start the engine. The application solves the problem that methanol fuel has low vapor pressure and large latent heat, and thus it is difficult to start the engine at low temperature.

The invention belongs to the technical field of fuel additives, and particularly relates to a preparation method of micro-quantum core mother liquor for an internal combustion engine. S1, raw material pretreatment and solvent dehydration; s2, preparation of a combustion and calorific value enhancement functional mother solution A; s3, preparation of a system protection function mother solution B; s4, preparing a mother solution C with stable operation and lubricating functions; and S5, compounding, degassing and finely filtering the three functional mother liquor. An eight-element synergistic system is constructed, and the micro-quantum core mother liquor for the internal combustion engine is prepared by adopting a three-module step-by-step preparation process; after methanol fuel is added, the combustion efficiency, power output and cold start performance can be synergistically improved, meanwhile, electrochemical corrosion, sealing element swelling and part abrasion are inhibited, and it is guaranteed that the fuel is stably stored for a long time; the process avoids the compatibility problem of multi-additive mixing, and solves multiple contradictions of energy improvement, material protection and fuel stability.

The application relates to a preparation method of a platinum-based alloy rare earth metal oxide fuel cell anode catalyst, and relates to a preparation method of a platinum-based alloy oxide fuel cell catalyst, which aims to solve the technical problems of low catalytic activity and easy carbon monoxide poisoning of the existing methanol fuel cell anode catalyst. The method comprises the following steps: firstly, preparing a CeO2 catalyst carrier material by using a hydrothermal synthesis method; then mixing a corresponding Pt, Sn and Cu precursor solution used for preparing a PtSnCu alloy with the CeO2 catalyst carrier material to perform oil bath heating reaction; and finally, separating, washing and drying to obtain the catalyst PtSnCu / CeO2. The initial capacity of the catalyst in an acid electrolyte is 1010.5-1163.3 mA mg Pt ‑1 , and the capacity after 500 cycles is 680.65-820.4 mA mg Pt ‑1 , the retention rate is 67.4%-70.5%, and the catalyst can be used in the field of methanol fuel cells.

The application discloses a kind of multi-branch methanol fuel supply system steady flow, steady pressure method and system, the method includes: according to the actual flow value read by flowmeter installed on each engine branch, total flow actual value and total flow set value are obtained;According to total flow actual value and total flow set value, the reference control amount of adjusted variable frequency pump frequency is obtained;According to the reading of first pressure sensor and second pressure sensor installed on the main pipeline of variable frequency pump outlet, pressure actual value is obtained;According to pressure actual value, the basic control amount of proportional valve is obtained;According to the reference control amount of adjusted variable frequency pump frequency and the basic control amount of proportional valve, the final frequency instruction of variable frequency pump and the final opening degree instruction of proportional regulating valve are obtained.The application improves the system control stability, enhances the system anti-interference ability, reduces the system energy consumption.

The utility model discloses an electric ship with an external methanol power generation standard power unit, which relates to the field of ships, and adopts the technical scheme that the electric ship comprises a ship body and the methanol power generation standard power unit, the ship body comprises a propeller, a motor and a power box; the propeller is driven by a motor, and the power box is provided with a methanol power generation standard power unit; the methanol power generation standard power unit comprises a methanol fuel tank, a methanol range extender and a power battery pack; a liquid outlet of the methanol fuel tank is communicated with a liquid inlet of the methanol range extender, the power output end of the methanol range extender is electrically connected with the power input end of the power battery pack, and the power output end of the power battery pack is electrically connected with the power input end of the motor. Methanol is adopted as a power source, longer endurance can be provided, fuel filling is more convenient and faster and only needs to be carried out on the fuel wharf boat, harbor expenses do not need to be paid, the methanol and water are mutually soluble, pollution cannot be generated, and environmental protection is better achieved.

This invention relates to the field of new energy and liquid carbon fuel technology, specifically to a high-cleanliness methanol alternative fuel for vehicles and its preparation method. The method includes raw material mixing and vaporization, atmospheric pressure gas-phase catalysis, and multi-stage condensation and separation steps. The method combines base methanol with hydrocarbon additives and introduces them into a composite mixed-bed molecular sieve catalyst containing aromatic cascade, etherification, and alkylation active units, as well as an anti-coking flow carrier. Its core principle is to enhance the octane number by following the atmospheric pressure gas-phase aromatization and cascade mechanism, generate ethers in situ as phase stabilizers and hydrogen bonding agents, and utilize a mesoporous carrier to reduce steric hindrance and promote macromolecular desorption. This invention differs from the high-pressure reaction conditions of traditional methanol-to-gasoline processes by overcoming the defects of methanol fuel phase separation upon contact with water and catalyst coking through a one-step atmospheric pressure gas-phase conversion. It eliminates the need for physical co-solvents and significantly extends the catalyst regeneration cycle.

A methanol delivery device for a dual-fuel diesel engine is mounted on a cylinder head. The cylinder head interior has a cylinder head injection valve hole with an injection valve bushing and a through hole extending from the outside of the cylinder head directly to the injection valve hole. A distribution control block is connected to the outside of the cylinder head. The methanol delivery device includes a bushing connecting block, a delivery intermediate body, a monitoring flange, and a right-angle flange, forming three sealed passages within the cylinder head. The first passage connects the distribution control block and the injection valve bushing, for delivering methanol fuel to the hydraulic pump injection valve. The second passage connects the injection valve bushing and the distribution control block, for returning un-injected methanol fuel from the hydraulic pump injection valve. The third passage connects the through hole and the distribution control block, for detecting methanol fuel leakage and draining leaked methanol fuel. This invention, while ensuring good sealing and safety, reduces external interface exposure, simplifies interface layout, and achieves functions such as methanol fuel input, return, leakage drainage, and detection.

The utility model discloses a surge tank structure of a marine methanol supply pipeline, which comprises a methanol supply pipeline and a nitrogen inerting system, the methanol supply pipeline is provided with a surge tank, and the top of the surge tank is provided with a gas inlet connected with the nitrogen inerting system through an electronic ball valve. A pressure sensor in signal connection with the electronic ball valve is installed on a pipeline between the electronic ball valve and the gas inlet, a dynamic pressure adjusting mechanism is constructed, when the pressure drops to a preset value, nitrogen is supplemented into the surge tank in time through a nitrogen inerting system, and unsmooth methanol fuel supply caused by sudden pressure drop is avoided; a safety valve used for exhausting is further installed at the top of the surge tank, when the pressure in the surge tank is too high, the safety valve is automatically opened to exhaust redundant gas, the situation that a methanol supply pipeline is impacted due to the too high pressure is avoided, the methanol leakage risk is reduced, meanwhile, the service life of the pipeline and related equipment is prolonged, and the operation and maintenance cost of the ship is reduced.