40results about How to "Achieve direct conversion" patented technology

The invention belongs to the field of fuel cells, and particularly relates to a generating and energy storage integrated device based on direct carbon fuel cells (DCFCs) with a liquid metal positive electrode. The generating and energy storage integrated device comprises a metal molten pool, the liquid metal positive electrode, the tubular solid oxide direct carbon fuel cells (SO-DCFCs) and a fluidization air distributing feeding system, wherein the tubular SO-DCFCs can be blind pipes and through pipes and can be inserted into the metal molten pool vertically or horizontally; the feeding system carries a fuel and a positive electrode material into the metal molten pool by virtue of carrier gas, and substances in the molten pool are stirred. The generating and energy storage integrated device provided by the invention has the advantages that chemical energy in the fuel and surplus electric energy in an power grid are changed into chemical energy in the liquid metal positive electrode to be stored, and the integration of a generating device and an energy storage device is realized; the integrated device is simple and compact, the reactivity of the carbon fuel and the metal positive electrode is high, the property of the cell is good, the friction of the cell caused by liquid state positive electrode fluidization is small, the service life of the cell is long, the seal is easy, the collection is convenient, and a large-scale electric pile is convenient to form.

The invention provides a method and system for eliminating the perspective effect of visual perception in the working environment in front of agricultural machinery. The method includes: performing camera calibration to obtain camera internal parameters and camera installation parameters; and constructing a single-point perspective according to the camera internal parameters and camera installation parameters. Coordinate conversion formula; among them, the single-point perspective coordinate conversion formula is used to convert the coordinates of any point in the perspective picture into the coordinates corresponding to the world coordinate system, and the corresponding coordinates in the reverse perspective view; Select the ROI vertex in the perspective picture, and determine the inverse perspective transformation matrix according to the single-point perspective coordinate transformation formula and the ROI vertex; according to the inverse perspective transformation matrix, perform inverse perspective transformation on each single point in the area determined by the ROI vertex to obtain Inverse perspective view after removing perspective effects. In this way, the end-to-end direct conversion from the spatial ROI to the image ROI can be realized, and the amount of image computation can be significantly reduced.

The invention discloses a method for desymmetry of 3-substituted cyclobutanone, cyclobutene compounds and uses thereof. The method uses 3-substituted cyclobutanone as a starting material, and under the action of chiral lithium amide, Enantioselective deprotonation to obtain the corresponding lithium enolate intermediate; then using chlorophosphate as an electrophile to capture the lithium enolate intermediate to obtain cyclobutene compound (I), the reaction process is as follows : The method of the invention is simple to operate; the raw materials and reagents are simple and easy to obtain, and the preparation is convenient; the substrate is widely applicable; the functional group compatibility is good; the reaction has high enantioselectivity (up to 93% ee); Wait.

The invention discloses a high-temperature solid oxide electrolytic cell device coupled with solar photovoltaic light and heat, which includes an SOEC electrolytic cell, a photovoltaic panel, a heat-absorbing cavity, a water vapor channel and the like. Its structure is to open the middle of the photovoltaic panel and fix it with one end of the tubular SOEC electrolytic cell. The outer layer of the tubular electrolytic cell and the other end are wrapped with an insulating layer, and the inner layer is coated with a solar selective absorption coating. The solar photovoltaic panel and the SOEC electrolytic cell A heat-absorbing chamber is formed, and part of the concentrated solar energy is directly irradiated on the photovoltaic panel to generate electricity, and the other part enters the heat-absorbing chamber through a round hole to heat the SOEC electrolytic cell. The thermal cavity provides the required thermal energy. The beneficial effect of the invention is that solar energy can be directly used to realize hydrogen production by electrolysis of water without additional energy input, and meanwhile, the structure is simple and the utilization efficiency of solar energy is high.

The invention relates to the field of conversion and storage from solar energy to electric energy, and especially relates to a solar-assisted energy-saving charging type organic lithium-sulfur battery. The solar-assisted charging organic lithium-sulfur battery comprises solid sulfur or a polysulfide ion solution anode, a lithium cathode and a semiconductor photoelectrode. During illumination charging, the semiconductor photoelectrode is excited by light to generate photo-induced electrons and holes, the holes in a valence band oxidize polysulfide ions, the photo-induced electrons reduce metallithium through an external circuit, a photovoltage generated by the photoelectrode partially compensates a charging voltage, the charging voltage is reduced, a purpose of saving electric energy is achieved, and meanwhile conversion and storage from solar energy to electric energy are achieved. The invention provides an efficient and stable solar rechargeable lithium-sulfur battery. A manufacturing method is simple, a process condition is mild and cost is low, and an industrial production requirement is satisfied.

The invention relates to a method for preparing diesel fraction, and particularly relates to a method for preparing diesel fraction through direct conversion of methanol / dimethyl ether. In the invention, the methanol and / or dimethyl ether are / is converted into diesel fraction under certain reaction conditions by the catalyst effect. The catalyst consists of a molecular sieve and an adhesive, wherein the molecular sieve accounts for 60-90% of the catalyst by mass. In the reaction, the conversion rate of the raw material is greater than 90%, and the diesel fraction selectivity in the total hydrocarbon product is 3-56% by weight. The method provided by the invention has the remarkable characteristics of convenience in operation, mild reaction conditions, concentrated product distribution and convenience in subsequent separation operation, and further can obtain the diesel fraction with relatively high output; meanwhile, the problems of diesel shortage and supply tension are relieved to a certain degree.

The invention discloses a preparation method of a millet beverage, relates to a preparation method of a cereal beverage, and solves the problems that during the preparation of the nutritional beverage prepared from millet, the pasting is needed, the energy consumption is high, a large amount of time is consumed, and the layering problem occurs after a long time of standing and storage. The preparation method comprises the following steps: crushing the millet, adding water into the crushed millet, and mixing and stirring the mixture uniformly; adding a protease and high-temperature amylase composite enzyme preparation; adding a cellulase and a saccharifying enzyme; cooling and filtering; adding vegetable oil; carrying out homogenization, high-temperature sterilization, and filling to obtain the millet beverage finished product. The method is applied to the field of beverage preparing.