16results about How to "Reduce hydrogen consumption" patented technology

This invention relates to the field of petroleum refining and chemical engineering, and discloses a method for hydrogenating waste tire pyrolysis oil. The method includes the following steps: (1) in the presence of hydrogen, the waste tire pyrolysis oil raw material undergoes a gas-phase desulfurization reaction in a first gas-phase hydrogenation reactor to obtain a gas-phase desulfurization reaction product; (2) the gas-phase desulfurization reaction product is subjected to gas-liquid separation to obtain a gas-phase component and a liquid-phase component; (3) the liquid-phase component is pressurized and mixed with hydrogen, and then subjected to a liquid-phase dearomatics reaction in a second hydrogenation reactor to obtain a liquid-phase dearomatics reaction product; the nitrogen content in the waste tire pyrolysis oil raw material is 3000-10000 μg / g. This method uses waste tire pyrolysis oil from the middle distillate as raw material, achieving deep desulfurization while reducing the removal of nitrogen oxides and monocyclic aromatic hydrocarbon saturation. It also simplifies the overall process flow, reduces the reaction severity, and lowers energy and hydrogen consumption.

This invention discloses a method for preparing aviation fuel with different functional components based on the directional dismantling of organic waste molecular structure, belonging to the field of organic waste recycling. The method uses waste plastics, waste rubber, and waste oils as raw materials, employing a vertically connected two-stage reactor. Multiple types of mixed organic waste are co-pyrolyzed in the first-stage reactor, and the pyrolysis volatilization products directly enter the second-stage reactor for gaseous catalytic hydrogenation, ultimately yielding a mixed aviation liquid fuel containing different functional components. This method utilizes the molecular structure of organic waste itself to prepare liquid fuel products such as isoalkanes and aromatics, replacing the isomerization and aromatization reactions in existing catalytic processes. It has advantages such as a simple process flow and simple catalytic reaction, and can quantitatively prepare mixed aviation fuel composed of two or more functional components from n-alkanes, isoalkanes, aromatics, and cycloalkanes according to actual applications.

The application discloses a method for cracking tar into high value-added products, which adopts a route of separating light components by fractional distillation and then hydrogenating heavy components, so that the yield of target products can be affected by hydrogenation of naphthalene, methyl naphthalene and the like below 250 DEG C in the process of hydrocracking, and on the other hand, the components below 250 DEG C account for about 30% to 50%, so that the hydrogen consumption in the subsequent hydrocracking can be reduced by separating the components in advance. After the heavy fraction is subjected to hydrocracking, part of polycyclic aromatic hydrocarbons in the heavy fraction can be cracked into part of monocyclic aromatic hydrocarbons, which can be used for producing aromatic solvent oil, so that the light fraction in the hydrocracking product is separated and mixed into the light fraction generated by pre-fractionation, and the next step processing is carried out, so that the yield of high value-added products can be further improved.

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.

The invention belongs to the field of methanol synthesis, and discloses a methanol synthesis system and method. The system comprises a gasification unit, a carbon dioxide separation unit, a carbon dioxide boosting unit, a synthesis gas boosting unit, a first methanol synthesis unit, a second methanol synthesis unit and a water electrolysis unit. According to the method, hydrogen / oxygen production through water electrolysis, biomass gasification and methanol synthesis are coupled, so that the problems of low equilibrium conversion rate, high hydrogen consumption, high energy consumption and the like in traditional methanol production through biomass gasification are avoided, the challenge of raw material sources is solved, carbon emission is avoided, and the method has remarkable economic and social benefits.

The present application relates to a molecular sieve composition, a preparation method thereof and application thereof. The molecular sieve composition of the present application comprises a mosaic molecular sieve of a TON structure molecular sieve and a 5A type molecular sieve. The molecular sieve composition of the present application has a dual function of adsorption and hydroisomerization.

This invention relates to the field of hydrocracking catalysts, and discloses a hydrocracking catalyst, its preparation method and application, and a method for hydrocracking treatment of residue oil. The hydrocracking catalyst contains molecular sieves, silicon-modified alumina, and active metal components. Optionally, the hydrocracking catalyst also contains alumina and / or additives. The content of the molecular sieve is 5-25 wt%, the content of the silicon-modified alumina is 30-60 wt%, and the content of the alumina is 0-20 wt%. The content of the active metal components, calculated as oxides, is 5-35 wt%, and the content of the additives, calculated as oxides, is 0-1.0 wt%. The catalyst provided by this invention has the advantages of large specific surface area, large pore volume, large pore size, and high metal content. When used in the hydrocracking treatment of residue oil, it not only exhibits high activity and good stability, but also improves naphtha selectivity, expands feedstock adaptability, and reduces hydrogen consumption.

This invention specifically relates to a distributed power management strategy for a hybrid electric propulsion system for electric aircraft, belonging to the field of aviation electrification. The system consists of a fuel cell, an energy storage battery, and a supercapacitor connected in parallel to a DC bus via a power converter. In this invention, each unit is independently controlled based on local information, eliminating the need for a communication network: the fuel cell adaptively switches between voltage and power modes according to the load power and battery state of charge, avoiding heavy or light load operation; the battery adjusts its steady-state operating point through a virtual resistance droop mechanism, absorbing steady-state power deficits or excess power; the supercapacitor absorbs dynamic power through a virtual capacitance droop mechanism, suppressing load fluctuations. This invention effectively suppresses the negative impacts of heavy / light loads, load fluctuations, and frequent start-stop cycles on fuel cell lifespan and efficiency, reduces hydrogen consumption, and improves overall system reliability.

The invention relates to a method and system for producing ethylene and propylene from heavy oil, and the method comprises the following steps: introducing heavy hydrocarbon oil into a supercritical extraction separation unit for supercritical extraction separation to respectively obtain light deasphalted oil, heavy deasphalted oil and deoiled asphalt; carrying out hydrotreating on the deoiled asphalt to obtain hydrogenated deoiled asphalt; introducing the heavy deasphalted oil and the hydrogenated deoiled asphalt into a first reactor to be in contact with a first catalytic conversion catalyst for a first catalytic conversion reaction; introducing the light deasphalted oil into a second reactor to contact with a second catalytic conversion catalyst for a second catalytic conversion reaction; wherein the first catalytic conversion catalyst and the second catalytic conversion catalyst contain MPZ hierarchical pore molecular sieves. According to the method disclosed by the invention, polycyclic aromatic hydrocarbon which is not easy to react can be saturated, the cracking property of the deoiled asphalt is improved, the generation of coke is reduced, and the yields of ethylene and propylene are improved.

This invention belongs to the field of intelligent control technology for unmanned platform power and new energy, specifically relating to a power supply unit for deployment in extreme environments and its energy management method. The energy management method includes the following steps: S1, acquiring the current physical state vector of the system in real time through a multi-dimensional state sensing network; S2, inputting the state vector into the pre-trained deep Q-network main network inside the energy management controller, and selecting the action command with the highest Q value; S3, sending the action command to the DC / DC conversion module, instructing the DC / DC conversion module to prioritize controlling the sodium-ion battery pack to release a high-rate current, and to connect in parallel with the hydrogen fuel cell stack for high-power output to compensate for the physical sluggishness of the dynamic response of the hydrogen fuel cell; S4, dynamically adjusting the opening of the temperature-controlled proportional directional valve to directionally transport the collected waste heat to the heat exchange branch of the sodium-ion battery pack for heating and insulation.

The invention provides a fuel cell heavy truck energy management method and system considering energy-saving driving. The method comprises the steps that an energy-saving driving index is determined according to driving state parameters obtained in real time; based on the energy-saving driving index, the front road information, the driving motor power and the driving state parameters, utilizing a space time sequence fused graph neural network prediction model to predict an instantaneous vehicle power demand; constructing a multi-objective optimization model and solving the model to obtain the target output power of the fuel cell stack and the target charging and discharging power of the energy storage device; issuing a power instruction to the fuel cell stack and the energy storage device according to the target output power and the target charging and discharging power, and triggering an energy storage compensation mode when the deviation between the actual driving power and the predicted power demand exceeds a preset condition; and the weight of the model is updated based on the deviation and the change of the energy-saving driving index, and energy-saving driving information is fed back to the driver. In this way, the driver is guided to optimize operation so as to further excavate the energy-saving potential, and the energy consumption economy and the driving range of the whole vehicle are improved.

The application provides an energy management method for a hydrogen-powered full-electric ship, and belongs to the technical field of energy management. The method comprises the following steps: acquiring historical operation data of a hydrogen-powered full-electric ship in real time; based on the acquired historical operation data, predicting a load power prediction interval of the hydrogen-powered full-electric ship in a future preset time period; taking the load power prediction interval in the future preset time period as a known future disturbance input, and rolling to solve an optimal power distribution sequence of a power source of the hydrogen-powered full-electric ship in the future preset time period; and controlling power outputs of the proton exchange membrane fuel cell and the lithium battery according to the solved optimal power distribution sequence, so as to realize operation cost optimization of the hydrogen-powered full-electric ship. Hydrogen consumption and equipment degradation cost are effectively reduced.

The application provides a fuel cell hybrid electric vehicle energy management method based on a sand cat group optimization algorithm fusion optimization, and comprises the following steps: in an offline optimization stage, an improved sand cat group optimization algorithm SCSO is used to globally optimize membership function parameters and rule weights of a fuzzy controller, so that a high-performance basic fuzzy controller is obtained; in an online adjustment stage, the basic fuzzy controller obtained in the offline optimization stage is taken as a starting point of a deep deterministic policy gradient algorithm DDPG, an equivalent factor adjustment amount is output by a DDPG agent according to real-time vehicle states, and the output of the basic fuzzy controller is dynamically corrected, so that adaptive optimization of the strategy is realized. The application realizes the consideration of global optimality and real-time adaptability, thereby effectively reducing hydrogen consumption of the whole vehicle, improving fuel cell durability, and improving system dynamic response performance.

This invention discloses a method for preparing a ruthenium bipyridine-anchored photocatalyst, and also relates to its application in the conversion of biomass-based oil into alkane fuels, belonging to the field of photocatalysis technology. The preparation method involves using a sulfonated semiconductor material in combination with divalent tripyridine ruthenium, wherein the divalent tripyridine ruthenium couples with sulfonic acid groups on the surface of the sulfonated semiconductor through secondary ion exchange to form a ruthenium bipyridine-sulfonic acid ligand structure. The photocatalyst prepared by this invention has the following characteristics: it can significantly improve the separation efficiency of photogenerated carriers, enhance the absorption performance of the catalyst in the visible light band, and achieve comprehensive enhancement of catalytic performance through optimized oxidation and reduction capabilities. The photocatalyst prepared by this invention exhibits excellent light energy utilization efficiency and product yield in the photocatalytic conversion of biomass-based oil into alkane fuels, overcoming the limitations of single photocatalytic materials, and possesses significant technological advancements and broad practical application prospects.

This application discloses a medium- and low-temperature coal tar processing and conversion process, comprising: feeding medium- and low-temperature coal tar feedstock into a delayed coking unit to obtain needle coke and delayed coking product oil; the delayed coking product oil entering a fractionation tower to separate phenolic oil; the phenolic oil undergoing dephenolization to obtain dephenolized oil; the dephenolized oil entering a hydrorefining section to obtain hydrorefined product oil; the hydrorefined product oil entering a fractionation tower to cut gasoline, diesel, and kerosene fractions; the kerosene fraction entering a hydroisomerization section to obtain hydroisomerized product oil; the hydroisomerized product oil entering a hydroreforming section to obtain hydroreformed product oil; and the hydroreformed product oil entering a fractionation tower to obtain aviation kerosene blank oil. Through the comprehensive utilization of coal tar through deep processing, aviation kerosene and high-value chemicals such as gasoline, diesel, phenolic chemicals, and needle coke are produced, improving the utilization rate of coal tar resources. Simultaneously, the deep processing of coal tar extends into the field of high-value materials, fully realizing the sustainable development of coal tar processing.

This invention proposes an intelligent integrated thermal management system and method for fuel cell buses, comprising: a fuel cell thermal management circuit with a heat exchanger installed on it; a passenger compartment thermal management circuit connected to the heat exchanger, with a dual-core heat exchanger installed on it; a power battery thermal management circuit connected to the dual-core heat exchanger, with a four-way valve installed on it; a motor thermal management circuit connected to the four-way valve; and an air conditioning thermal management circuit connected in parallel to the dual-core heat exchanger.