1037 results about "Hydrogen system" patented technology

The present invention relates to a ventilator of fuel-cell vehicles for ventilating hydrogen in the hydrogen-system unit area arranging a hydrogen circulating device in the fuel-cell vehicles boarding the fuel cell. The ventilator of fuel-cell vehicle includes a first ventilating device for taking ventilating air in from a front side of the fuel-cell vehicle to hydrogen-system unit area arranging the fuel cell, the hydrogen supply device, and the hydrogen exhaust device in the center of front and rear direction of the fuel-cell vehicle; and a second ventilating device for sucking the ventilating air taken in from the rear end of vehicle body of the fuel-cell vehicle to the hydrogen-system unit area.

The invention relates to a processing flow of FT synthetic oil, which comprises hydrogenation, low-temperature oil washing, decarburization and PSA. The invention is characterized in that the synthetic oil is mixed with hydrogen via a filter, and enters a hydrogenated prerefining reactor after heat exchange, then enters a hydrogenated refining reactor after the synthetic oil is heated to 300 to 380 DEG C by a heating furnace; oxygen-containing compounds, unsaturated hydrocarbons and metal impurities in the raw material are extracted; the hydrogenated refined product enters a high thermal separator for separation of oil phase and gas phase after heat exchange, and enters a hydrocracking reactor for hydrocracking after heat exchange and heating of the heating furnace; the cracked product and the refined product are mixed to enter a fractionation system; a combined flow with two stages connected in series is adopted for the hydrogenated refining reactor and the hydrocracking reactor which share a recycle hydrogen system; a fractionation system is shared by the hydrogenated refined oil and the hydrocracked oil; and a three-column process flow is adopted for the fractionation system. The invention has the advantages of low gas consumption of the low-temperature oil washing process, high recovery of light hydrocarbons, less matching investment, and reduction of energy consumption and improvement of hydrogen recovery rate due to the decarburization process.

System for producing electric energy and hydrogen based on renewable energy sources, such as wind energy from one or several wind turbines, and incorporating means for producing hydrogen. The system comprises a hybrid electrolyzer device, which comprises a combination of at least two different electrolysis technologies and at least one control device, which manages the hydrogen production between the two electrolyzers of the different electrolysis technologies; being at least one electrolyzer of a rapid dynamics electrolysis technology type and, at least the second one of a substantially slower dynamics electrolysis technology type.

The invention discloses a two-stage hydrocracking operation method to increase the production of high-grade middle distillate oil, which comprises: doping given proportion fresh feed oil in second stage feeding, inhibiting the activity of second-stage catalyst, increasing yield, and enlarging handling capacity. This invention uses one cycle hydrogen system and separation system. Compared with prior art, this inveniton has high yield, well stability, and long running period.

The invention provides a solid fuel chemical-looping gasification hydrogen production system and method. The solid fuel chemical-looping gasification hydrogen production system is characterized by comprising an air reactor, wherein the air reactor is connected with a first gas-solid separation device; the first gas-solid separation device is connected with a fuel reactor; the fuel reactor is connected with a second gas-solid separation device; a gas outlet of the second gas-solid separation device is connected with a synthetic gas converter; the synthetic gas converter is connected with a CO2 adsorption unit; a discharge port of the CO2 adsorption unit is connected with an H2 processing unit; an outlet of the CO2 adsorption unit is connected with a third gas-solid separation device; a CaCO3 solid outlet of the third gas-solid separation device is connected with a calcining furnace; the calcining furnace is connected with a fourth gas-solid separation device; a gas outlet of the fourth gas-solid separation device is connected with a CO2 processing unit; a solid outlet of the fourth gas-solid separation device is connected with a CaO storage tank; and the CaO storage tank is connected with the CO2 adsorption unit. The system can implement near zero discharge of CO2 in the hydrogen production process, and thus, reduces the influence of greenhouse gas on the environment.

The invention relates to a method for production of a diesel oil fraction and an aviation fuel fraction by use of animal and plant oils and fats, and the method comprises the following steps: a) performing refining processing on the animal and plant oils and fats; b) performing catalytic hydrogenation and deoxidation to obtain saturated linear alkanes and propane; c) performing hydroisomerization and hydrocracking processing to obtain an alkane material flow with higher branched chain degree; d) separating to obtain liquid hydrocarbons and gaseous hydrocarbons with the boiling point within the boiling point range of diesel oil, aviation fuels and naphtha; e) directly collecting the diesel oil fraction as a product, or cycling in whole or in part to continue isomerization and cracking reaction to increase production of the aviation fuel fraction; and f) mixing propane gaseous hydrocarbon and naphtha for steam reforming hydrogen production reaction, separating and purifying the obtained hydrogen to enter into a circulating hydrogen system; the method is used in the production of the renewable diesel oil and aviation fuels with excellent combustion performance and cold flow performance, and meanwhile efficient utilization of by-products and in-system supplement of hydrogen consumption can be realized.

The invention belongs to the key technical field of million kilowatt level advanced pressurized water reactor nuclear power plants, and discloses a nuclear power plant generator whole air tight test method. The test method includes that gas is inflated into a generator and a hydrogen system, the pressure is increased to working pressure to be maintained, a leakage point is detected to be handled, the test can be finished when pressure maintaining time of leakage rate meets a predetermined requirement and is larger than or equal to 24 hours, and mixed gas of air and hydrogen is inflated to the generator and the hydrogen system. The test method further comprises a temperature control operating step and an anti-oil-swapping operation step, wherein the temperature control operating step is used for maintaining balanced temperature inside the generator, and the anti-oil-swapping operation step is used for controlling swapping of sealing oil on the airside and the hydrogen side not to cause gas leakage. The test method further comprises sealing oil tank liquid level monitoring step in the process of pressure maintaining. Recording duration for monitoring of gas temperature, pressure, ambient atmosphere pressure and sealing oil tank liquid level inside the generator is every 20-40 minutes in the process of the pressure maintaining. The nuclear power plant generator whole air tight test method is short in time limit for construction and high in test precision.

The invention discloses a testing platform of a fuel cell hydrogen system which comprises a real-time control system and a hydrogen system testing table.The real-time control system is connected with a hydrogen testing system and used for achieving testing control for the hydrogen testing system under the control of upper computer testing software.The hydrogen system testing table comprises a hydrogen backflow module, a hydrogen temperature control module, a galvanic pile analog module and a hydrogen tail exhaust module and is used for detecting the hydrogen system through the modules.The state of the hydrogen system can be simulated when the fuel cell system is operated, so that whether the performance and service life of all parts of the hydrogen system meet design requirements and requirements of the fuel cell system or not is tested.

The invention provides a fuel cell engine system integrated structure which includes an electric pile, an air system, a water system, a hydrogen system, a power control unit and an electro-driving system. The fuel cell engine system integrated structure also includes a framework, which is constructed in a manner that the electric pile, the air system, the water system, the power control unit and the electro-driving system can be arranged on the framework in a multilayer arrangement, wherein the electric pile is arranged at the center of the framework, the power control unit is disposed on the top layer of the framework, and the rest other parts of the fuel cell engine system are fixed on the framework in an arrangement of surrounding the electric pile. The electric pile, the power control unit and the rest other parts of the fuel cell engine system are all fixed on the framework respectively in a detachable manner. The parts in the integrated structure are easy to maintain and detach.

The invention discloses a fuel cell vehicle carriage hydrogen system; the system comprises a high-pressure hydrogen storage bottle group system, a bullied pipeline, an unloading pipeline, a hydrogen supply pipeline and a blowdown pipeline; the bullied pipeline, the unloading pipeline, and the hydrogen supply pipeline are connected to the high-pressure hydrogen storage bottle group system side by side; the blowdown pipeline is connected at the tail end for safe unloading; and the system can be applied to a hydrogen carriage hydrogen system of a fuel cell vehicle, which can receive the high-pressure hydrogen of a hydrogen filling station, can safely unload and use the carriage high-pressure hydrogen, and can provide steady pressure and flow for a fuel cell engine. The fuel cell vehicle carriage hydrogen system has the advantages of complete function, simple structure, in-place security protection measure, and high safety and reliability. When having the bullied, unloading, and hydrogen supply functions, the system also has the over-temperature, overpressure, overflow, and return protection functions.

The invention relates to a large water electrolysis hydrogen production system with wide power fluctuation adaptability and a control method. The system comprises: a plurality of water electrolysis hydrogen production module groups which are arranged in parallel; a system power division controller, which is configured to be used for power distribution and control of the water electrolysis hydrogenproduction module groups in the water electrolysis hydrogen production system; each water electrolysis hydrogen production module group comprises a plurality of water electrolysis hydrogen productionmodules with different power levels and a module power division controller, the module power division controller is configured to be used for power diversion control of a water electrolysis hydrogenproduction module in the module group. The module power division controller is connected to the system power division controller, and the water electrolysis hydrogen production modules in the water electrolysis hydrogen production module groups share one module manager used for temperature, alkali liquor circulation and gas-liquid separation control and a hydrogen purification assembly used for hydrogen purification. Compared with the prior art, the hydrogen production energy consumption efficiency and wide power fluctuation adaptability can be improved, the instantaneous response speed is increased, and the power loading cost is reduced.

A hydrogen system for improving the operational life of a fuel cell comprises a fuel cell stack (1), a hydrogen supply part (2) and a hydrogen reflux part (3), and is characterized by also comprising a hydrogen purging part (4) which consists of a high-pressure purging gas cylinder (41) with purging gas, a purging gas control electromagnetic valve (44) connected with the purging gas cylinder, a reducing valve (43) communicated with the purging gas control electromagnetic valve (44) and a one way valve (42) connected with the purging gas cylinder (41). The residual hydrogen on the hydrogen chamber and the hydrogen channel of the fuel cell stack is removed through purging by the hydrogen purging part; the hydrogen chamber of the fuel cell membrane electrode can be effectively prevented from generating higher instant electric potential by electrochemical reactions to burn the membrane electrode when the system starts up or shuts down, thereby greatly improving the life-span of proton exchange membrane fuel cell. The invention is also characterized by simple structure, high efficiency and long life-span.

The invention discloses a wide-power water electrolysis hydrogen production system and method. The system comprises a rectifier transformer and an electrolytic bath, the rectifier transformer convertsAC into DC and then introduces DC into the electrolytic bath; the system further comprises a gas-liquid separator, a gas cooler and a gas drop catcher; the rectifier transformer is connected with a fluctuating power supply; the gas-liquid separator comprises a hydrogen separator and an oxygen separator; the gas cooler comprises a hydrogen cooler and an oxygen cooler; the gas drop catcher comprises a hydrogen drop catcher and an oxygen drop catcher; the cathode electrolyte outlet of the electrolytic bath is communicated with the hydrogen separator of the gas-liquid separator, and the anode electrolyte outlet of the electrolytic bath is communicated with the oxygen separator of the gas-liquid separator. The problems that a conventional water electrolysis hydrogen production system is limited in power adjustable range, and the response capacity of the system such as pressure adjustment, and the like, in the wide power fluctuation period is insufficient are solved.

The invention relates to an optimization method of an oil refinery hydrogen system. According to the system provided by the invention, the maximum benefit of the oil refinery hydrogen system is targeted, constraint conditions are optimized, and a new mathematical programming algorithm including light dydrocarbon resource optimization is formed; and compared with the mathematical programming algorithm of an existing hydrogen system, the optimization method is more suitable to actual circumstances, and more benefits can be obtained to meet the requirements of hydrogen conservation and synergy for oil refinery. The invention further provides application of the method in the optimization of the oil refinery hydrogen system, and after the method is optimized, efficient utilization of hydrogen and light dydrocarbon can be realized, so that considerable comprehensive benefit is obtained.

The invention discloses an electric methanol hydrogen transporting tool. The tool comprises a methanol-to-hydrogen system, a hydrogen generating system and an electric engine, wherein the methanol-to-hydrogen system, the hydrogen generating system and the electric engine are connected with each other in sequence. The methanol-to-hydrogen system is used for preparing hydrogen through methanol steam reforming; the hydrogen passes through a membrane separation device plated with a palladium silver alloy to obtain a high-purity hydrogen; the obtained hydrogen is used for generating power through the hydrogen generating system; and the generated electric power is provided to the electric engine to work. The hydrogen generating system comprises a fuell cell, wherein the fuell cell comprises a plurality of sub fuel cell modules; and each sub fuel cell module comprises at least one super-capacitor. According to the electric methanol hydrogen transporting tool disclosed by the invention, the methanol can be used as energy for the transporting tool so that problems of energy crisis and vehicle emission are solved. The electric methanol hydrogen transporting tool disclosed by the invention is advantaged in that the volume of a hydrogen preparation device is small; the prepared hydrogen is rapid, stable and highly purified because the hydrogen is purified by using a special catalyst formula and a palladium membrane; and stable input energy can be provided to the transporting tool.

The invention discloses a hydrogenation method for medium and low temperature coal tar. The medium and low temperature coal tar is pretreated and fractionated to obtain carbolic oil, light distillates and asphalt; the carbolic is subjected to dephenolization to obtain phenol products and dephenolized oil; the light distillates and the dephenolized oil are mixed and sent into a hydrotreating reaction zone; liquid generated from hydrotreatment is sent into a hydrocracking reaction zone; the liquid generated from hydrotreatment is fractionated to obtain intermediate distillate oil used as diesel; the tail oil obtained from fractionation is recycled to the hydrocracking reaction zone or the hydrotreating reaction zone; naphtha obtained from fractionation is sent into a catalytic reforming reaction zone; hydrogen obtained from catalytic reforming is used in a hydrogen system; and the obtained liquid is extracted and fractionated to obtain premium gasoline or light aromatic products. Compared with the prior art, the method provided by the invention employs a combined process comprising fractionation, dephenolization, hydrotreating, hydrocracking and catalytic reforming to obtain phenol products, light aromatic products and high-quality motor fuel, and greatly prolongs operation cycle of the device.

The invention discloses a hydrogen supply system for a liquid hydrogen source material for a hydrogen internal combustion engine. The hydrogen supply system comprises a hydrogen storage tank used for storing the liquid hydrogen source material and a liquid hydrogen storage carrier, a reaction kettle used for dehydrogenating the liquid hydrogen source material, a buffering tank used for storing hydrogen, an oxygen storage tank used for storing oxygen, a heat exchange device used for transmitting heat generated by the hydrogen internal combustion engine to the reaction kettle, and a hydrogen storage device which is used for conveying the liquid hydrogen source material into the reaction kettle through a pump. The dehydrogenation reaction of the liquid hydrogen source material is conducted in the reaction kettle; hydrogen generated through the reaction is conveyed to the buffering tank; meanwhile, the liquid oxygen storage carrier generated after dehydrogenation is conveyed back to the hydrogen storage tank; the hydrogen in the buffering tank and the oxygen in the oxygen storage tank enter the hydrogen internal combustion engine according to a proportion. According to the dehydrogenation device for the normal-temperature and normal-pressure liquid hydrogen source material for a hydrogen internal combustion engine automobile, a hydrogen storage and hydrogen internal combustion engine integrated technology for enabling the hydrogen released by liquid hydrogen source material dehydrogenation at the normal temperature and the normal pressure to directly enter a hydrogen internal combustion engine system is put forwards for the first time, according to the technology, a common car can run for 500 kilometers with the hydrogen generated by 80 L of an organic carrier, and therefore the cost for large-scale utilization of hydrogen energy in the future is greatly reduced.

A compact, chemical-mechanical apparatus, having no electrical components, for storing and generating hydrogen safely, on-demand, at the time and point of use in small or large quantities using the environmentally clean chemical reaction between sodium metal and water to generate hydrogen (H₂) gas and sodium hydroxide (NaOH) byproduct is presented, for powering electricity generating fuel cells for large scale commercial and private electric motor vehicle transport. The apparatus of the present invention supports hydrogen gas generation by the controlled addition of liquid water to solid sodium metal to produce hydrogen gas and sodium hydroxide using only mechanical components without electrical components that require external power and can generate sparks or short circuits, producing catastrophic failure in hydrogen systems. The sodium hydroxide can be reclaimed and recycled by electrolysis using hydroelectric power to recover the sodium metal for reuse in generating hydrogen, thereby forming a complete clean energy hydrogen power cycle.

The invention discloses a liquid hydrogen source material dehydrogenation reaction system and an application method thereof. The dehydrogenation system comprises a storage device used for storing a liquid hydrogen source material and a liquid hydrogen-storage carrier, a reaction kettle used for dehydrogenating the liquid hydrogen source material, a buffering tank used for storing hydrogen gas, and a heating device arranged outside the reaction kettle and used for heating the reaction kettle. According to the invention, the liquid hydrogen source material is delivered into the reaction kettle through a pump; the liquid hydrogen source material is dehydrogenated in the reaction kettle; produced hydrogen gas is delivered to the buffering tank; and residual liquid hydrogen-storage carrier is delivered back to the hydrogen storage tank. The normal-temperature normal-pressure liquid hydrogen source material dehydrogenation system provided by the invention is used for carrying out a dehydrogenation reaction upon the liquid hydrogen source material. The produced hydrogen gas is supplied for a fuel cell or an internal combustion engine. The hydrogen gas is converted into electrical energy or mechanical energy which can be applied in various industrial and civil fields such as automobiles, electrical power, energy storage, chemical engineering, pharmacy, and mobile devices.

The invention discloses a fixed bed hydrogenation reactor and an application method thereof. In the fixed bed hydrogenation reactor, a gas-liquid phase product pre-separation technology with gas phase withdrawal in an axial center position is employed, wherein a plurality layers of baffle plates are arranged on the inner wall of the reactor, thereby improving operation stability of the hydrogenation system, improving gas-liquid distribution status in the reactor and eliminating wall flow, deflected flow and the like defects. The reactor, when being used in a reaction process of C3 fraction liquid-phase selective hydrogenation to remove methyl acetylene (MA) and propadiene (PD), can not only increase the MAPD hydrogenation purification reaction efficiency of a propadiene material but also is low in residual hydrogen, so that separation load in a down-stream propylene rectification column is reduced.

The invention relates to a refrigeration and low-temperature technology, and provides a low-temperature Dewar container. The low-temperature Dewar container comprises a low-temperature Dewar module; the low-temperature Dewar module comprises a hydrogen storage pressure bearing layer and a cold storage sandwich layer; a hydrogen accessing coil is arranged in the cold storage sandwich layer, is bentto extend in the cold storage sandwich layer, and is provided with a high-pressure hydrogen inlet and a high-pressure hydrogen outlet; and the high-pressure hydrogen outlet communicates with the hydrogen storage pressure bearing layer. The invention further provides a low-temperature high-pressure hydrogen storage system, which comprises the low-temperature Dewar container. As supercharging module and a cooling module cooperate for supercharging and cooling, the hydrogen density can be increased in a state of maintaining hydrogen phase to achieve the purpose of improving the hydrogen storagequality in the hydrogen storage pressure bearing layer; and compared with a traditional hydrogen storage technology, the hydrogen storage and release process can be realized under the conditions of lower pressure and higher temperature, and the cold storage sandwich layer can use the cooling capacity in the hydrogen storage and release process.

The invention relates to a combination method for residue hydrotreatment, catalytic cracking heavy oil hydrogenation and catalytic cracking. A reaction product obtained by a residue hydrotreatment reactor is separated into gas phase material flow and liquid phase material flow, residue hydrogenation tail oil obtained by fractionating the liquid phase material flow is taken as a catalytic cracking raw material to enter into a catalytic cracking device, catalytic cracking heavy oil in the catalytic cracking product is mixed with the gas phase material flow of the residue hydrogenation reaction product to enter into a catalytic cracking heavy oil hydrogenation reactor, the hydrogenated catalytic cracking heavy oil is circularly returned into the catalytic cracking device. According to the invention, a residue hydrogenation device and the catalytic cracking device are organically combined for conversing the residual oil into light oil to maximum limit and raising the yield of gasoline and diesel oil. In addition, a hydrogen source and a hydrogen system of the existing residue hydrogenation device are fully used, the separated hydrogen source and a circular hydrogen compressor are not required to the catalytic cracking heavy oil hydrogenation which substantially saves the investment cost and operation cost.