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379results about How to "High hydrogen content" patented technology

Preparation method of double-sided passivated crystalline silicon solar cell

The invention discloses a preparation method of a double-sided passivated crystalline silicon solar cell, belonging to the technical field of photovoltaic power generation. The preparation method comprises the following steps of: firstly, respectively carrying out surface precleaning and surface texturing on P-shaped single crystal silicon and a polycrystalline silicon wafer by adopting an alkaline solution and an acid solution; secondly, diffusing by using phosphorus oxychloride as a diffusion source to form a PN junction; thirdly, removing a phosphosilicate glass on the surface of the silicon wafer by adopting a chemical wet method, and etching the edge of the silicon wafer by adopting a plasma; fourthly, preparing a silicon nitride film on the surface of an emitting region of a P-type silicon wafer by adopting a plasma enhanced chemical vapor deposition method; fifthly, preparing a mixed phase film material of hydrogenated microcrystalline silicon and amorphous silicon by adopting a hot filament chemical vapor deposition method, depositing a film at one side of the P-type silicon wafer, and passivating the defects and a dangling bond on the surface of the P-type silicon wafer; and sixthly, sintering a screen printing back electrode and a screen printing positive electrode to form the solar cell. The invention lowers the probability of compounding photo-generated minority carriers on the back surface, enhances the long-wave light quantum efficiency and creates the conditions of transportation and collection of the photo-generated carriers.
Owner:SHANGHAI JIAO TONG UNIV

Multilevel-control polyradical biomass-gasification energy regeneration system

The invention provides a multilevel-control free-polyradical biomass-gasification energy regeneration system, which can transform extensive biomass and carbon-containing raw materials, including energy crops, agriculture-forestry byproducts, organic waste, industrial and dangerous waste and the like, into high-grade energy. The system is designed for continuous operation. Gasification comprises the following steps of performing pretreatment, performing pyrolysis, transforming carbon, fusing ash, cracking tar, reforming syngas and utilizing waste heat, wherein the steps are precisely controlled one by one and integrated so as to achieve optimum; moisture from the pretreatment of the materials is led into a carbon-transforming unit so as to realize oxygen-free pyrolysis; gasification gas is in contact with a large number of free polyradicals in a free-polyradical reaction-accelerating unit; and the obtained product is purified and then enters downstream application, such as power generation, hydrogen production and biomass methanol / ethanol production. The system has the advantages of needing no auxiliary fuel, maximizing gasification efficiency and thoroughly cracking tar and clearing pollutants, and is an upstream technique for the application of biomass renewable energy. As energy utilization meets all strict environmental protection standards, the system is also an energy-saving environment-friendly technique for non-incineration harmless treatment.
Owner:浙江瑞拓展泰再生能源有限公司

Self-heating staggered-arrangement micro-boss array type alcohol reforming device

The invention discloses a self-heating staggered-arrangement micro-boss array type alcohol reforming device. The self-heating staggered-arrangement micro-boss array type alcohol reforming device comprises a hydrogen purification component, a reforming hydrogen production plate and a catalytic combustion plate sequentially from top to bottom. A reforming hydrogen production cavity is arranged in the reforming hydrogen production plate and loaded with a hydrogen production catalyst which is used for alcohol reformation so as to produce hydrogen; a catalytic combustion cavity is arranged in the catalytic combustion plate and loaded with a combustion catalyst which is used for alcohol combustion and heat supply. Heat is supplied for the reforming hydrogen production through alcohol combustion, so that the natural operation of the alcohol reforming device can be realized. Staggered-arrangement micro-boss array structures are arranged in the reforming hydrogen production cavity and the catalytic combustion cavity, so that the specific area is large and the heat transfer and mass transfer efficiency is high. In addition, the alcohol reforming device comprises the hydrogen purification component, so that the fuel conversion efficiency of the reforming hydrogen production cavity can be improved, and hydrogen at an outlet can be directly used for a hydrogen fuel battery. The self-heating staggered-arrangement micro-boss array type alcohol reforming device is compact in structure, convenient for catalysts to load, easy for the whole structure to assemble, and capable of being used in intermediate and small flow alcohol reforming hydrogen production situations.
Owner:ZHEJIANG UNIV

Water cup for separating hydrogen from oxygen

ActiveCN106361099AInhibition of dissolutionIncrease the hydrogen contentCellsDrinking vesselsElectrolysisHydrogen
The invention provides a water cup for separating hydrogen from oxygen. The water cup comprises a hydrogen and oxygen separating part arranged in a water cup base, wherein the hydrogen and oxygen separating part is provided with a hydrogen output port and an oxygen output port; the hydrogen output port is communicated with the inside of a cup body; the oxygen output port is communicated to the outside of the cup body; hydrogen is output into the cup body through the hydrogen output port; oxygen is output to the outside of the cup body through the oxygen output port. The hydrogen and oxygen separating part is arranged outside the cup body to perform a hydrogen and oxygen separating process outside the cup body, then the hydrogen is output to the inside of the cup body, and the oxygen is discharged to the outside of the cup body, so that mixing of oxygen generated by electrolyzed water with drinking water in the cup body is avoided; in particular, an ozone component in the oxygen is prevented from being dissolved into the drinking water, so that higher-purity oxygen is dissolved into the cup body, and the hydrogen component in the drinking water is increased; the hydrogen can effectively eliminate free radicals generated by excess oxygen in a human body, so that the function of preventing various diseases is realized, and meanwhile the drinking experience of a user can be improved.
Owner:广东蜗品科技有限公司

Method and device for preparing high-purity hydrogen from biomass

The invention discloses a method and a device for preparing high-purity hydrogen from biomass. A thermal chemical hydrogen preparation process of biomass is divided into three steps, namely biomass gasification, step-by-step biomass carbonization and water-charcoal reaction. The combustible gas generated by biomass gasification provides heat energy required by the whole production line, and electricity is generated by gas to provide electric energy required by all power equipment, so that biomass is the only energy source of the whole process and ensures zero consumption of external power. The step-by-step biomass carbonization process overcomes the defects of low yield and low biomass charcoal reaction activity of the conventional carbonization process, and greatly improves the reaction activity of the biomass charcoal while ensuring a high yield of biomass charcoal by coupling a slow low-temperature carbonization reaction and a fast high-temperature carbonization reaction; therefore, the water-charcoal reaction is accelerated and the energy consumption in the water-charcoal reaction process is reduced. The content of hydrogen of the generated primary hydrogen-rich gas is over 85%, and can even be more than or equal to 99.99% after purification of a hydrogen purification device.
Owner:TIANJIN UNIV

Catalyst for hydrogen production by catalytic reforming with biological oil and preparation method

The invention relates to a catalyst for hydrogen production by catalytic reforming with biological oil and a preparation method. The catalyst comprises catalyst active components and a catalyst carrier; the catalyst active components refer to the following components in percentage by weight of 10-15 wt% of Ni, 5-13 wt% of Mo, 5-10 wt% of Fe and the balance being attapulgite and sepiolite mixed clay pit catalyst carrier. The catalyst provided by the invention has the advantages of large surface area, strong absorption function and strong promotion function; the cheap and easiest available attapulgite and sepiolite mixed clay pit are used as the catalyst carrier; and the catalyst active components comprise nickel, molybdenum and iron composite components, so that the molecules of the biological oil are subjected to splitting and chain scission to form high-quality synthesis gas of low-molecule hydrocarbon and high-content hydrogen. The catalyst provided by the invention has the advantages of simple catalyst preparation, large strength, strong catalyst activity, and regeneration. Not only can the catalyst be used for hydrogen production by catalytic reforming with the biological oil, but also the catalyst can be applied to direct hydrogen production by catalytic gasification with biomass.
Owner:ANHUI UNIV OF SCI & TECH

Hydrogenation method for reducing condensation point of diesel

A hydrogenation method for reducing the condensation point of diesel comprises the following steps: raw oil is in contact with a hydrofining catalyst in a first reaction area for reaction, effluents in the first reaction area are subjected to separation and fractionation to obtain gases, naphtha fractions, low-condensation-point diesel fractions I and high-condensation-point heavy diesel fractions; the obtained high-condensation-point heavy diesel fractions enter a second reaction area, and are in contact with a hydro-upgrading condensation point reducing catalyst to carry out an isocracking condensation point reducing reaction; effluents in the second reaction area are subjected to separation and fractionation to obtain low-condensation-point diesel fractions II; the low-condensation-point diesel fractions and the low-condensation-point diesel fractions II are mixed to obtain low-condensation-point diesel. According to the invention, the process selectivity is improved, so that the low-condensation-point diesel yield is improved remarkably. Through the adoption of the hydrogenation method, No.-10 to No.-50 low-condensation-point diesel can be produced flexibly, the cetane number is increased as compared with that of the raw material, the content of impurities such as sulfur and nitrogen is reduced greatly, and the Europe IV diesel standard and the Europe V diesel standard can be met.
Owner:CHINA PETROLEUM & CHEM CORP +1
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