Patents
Literature
Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

260results about How to "Increase conversion rate" patented technology

Catalyst special for O-alkylation production of aromatic ether and method for producing aromatic ether

The invention provides a catalyst special for O-alkylation production of aromatic ether and a method for producing aromatic ether. The catalyst is a supported catalyst, wherein transition metal or precious metal serves as an active component, a mixture of any one of ammonium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium phosphate and phosphoric acid and any one of potassium hydroxide, potassium carbonate, sodium hydroxide and sodium carbonate serves as an auxiliary, one or a mixture of an oxide carrier, clay and a molecular sieve serves as a carrier, the weight carrying amount of the active component is 0.1-5%, and the weight carrying amount of the auxiliary is 0.1-1%. The method comprises the steps that phenol and alkyl alcohol are catalyzed to react through the catalyst, wherein the mole ratio of phenol to alkyl alcohol in the raw materials is 1:(3-10), the catalyzing reaction is carried out in a gas-solid phase continuous flowing reaction device, and the catalyzing reaction temperature is 230-300 DEG C. The one-way service life of the catalyst reaches 3000 h or longer, and the problems that a catalyst used in the existing aromatic ether production process is short in service life, and consequently continuous industrial production of aromatic ether cannot be achieved are solved.
Owner:张旻捷

Preparation method for micro-nano silver loaded active carbon for eliminating formaldehyde for long term under room temperature condition

The present invention relates to the field of air purification materials, in particular to a preparation method for micro-nano silver loaded active carbon for eliminating formaldehyde for a long term under a room temperature condition. The present invention provides the preparation method for micro-nano silver loaded active carbon for eliminating formaldehyde for a long term under the room temperature condition. The preparation method comprises the following steps of active carbon washing, ammonia water impregnation modification and micro-nano silver loading. Compared with the prior art, the formaldehyde purification material provided by the present invention is prepared from the loaded micro-nano silver component by taking the active carbon washed by ultrapure water and treated by the ammonia water as a carrier; and by utilizing adsorption and reduction of the active carbon, catalytic oxidation performance of the micro-nano silver to the the formaldehyde and an enrichment conversion cooperation mechanism between the micro-nano silver and the active carbon, the micro-nano silver loaded active carbon is high in decomposition rate of catalyzing and oxidizing the formaldehyde and is stable in performance.
Owner:JUYILE ENVIRONMENTAL PROTECTION TECH SHANGHAI

Low-temperature SCR denitration catalyst with titanium-based core-shell structure and preparation method of catalyst

The invention provides a low-temperature SCR (Selective Catalytic Reduction) denitration catalyst with a titanium-based core-shell structure and a preparation method of the catalyst. The titanium-based core-shell structure of the catalyst is formed by use of composite nanoparticles MnOx-CeO2 as the core and TiO2 as the shell and the size range of the catalyst is from 20nm to 200nm, wherein the molar ratio of the three elements Mn, Ce and Ti is (0.05-1): (0.05-1): 1. The preparation method of the catalyst mainly comprises the following steps: (1) mixing cerous nitrate with a manganese nitrate solution, dropwise adding a sodium hydroxide solution and then shifting the mixed solution to a hydrothermal kettle, and carrying out reacting, centrifuging, washing, drying and calcining to obtain the nanoparticles MnOx-CeO2; (2) preparing the nanoparticles with the core-shell structure in a reversed-phase microemulsion with CTAB (Cetyltrimethyl Ammonium Bromide) as a surfactant, n-amyl alcohol as a cosurfactant and cyclohexane as an oil phase. The low-temperature SCR denitration catalyst with a titanium-based core-shell structure has the advantages that the titanium-based core-shell structure is constructed for the first time, the center of the catalyst is protected by use of the TiO2 shell, and the probability that the active center contacts with SO2 in flue gas is reduced, and therefore, the active center is prevented from irreversible poisoning caused by erosion of SO2.
Owner:NANJING NORMAL UNIVERSITY +1

Disorder bit compensation circuit for gradual approaching A/D converter

The invention relates to disorder place compensation circuit which is used for successive approximation type analog to digital converter, belongs to the digital-analog composite signal processing technology area, in the circuit the first inout end of the comparator outputs produce circuit and disorder place compensate produce circuit connects the first clock signal, the second input end of the comparator outputs produce circuit and disorder place compensate produce circuit connects the comparator compare result, the output of the comparator outputs produce circuit and disorder place compensate produce circuit separately corresponding connects the two input ends of the analog to digital converter output adjustment circuit, the clock input end of which connects the second clock signal, and lead out the output data signal and overflow signal of the analog to digital converter from the analog to digital converter output adjustment circuit. The set fuction of the circuit enhances transferring speed of the analog to digital converter, in the meantime, adjustes the output signal through increase compensation place and use the output adjustment circuit, eliminates the error by set in advance and produces the overflow signal.
Owner:SOUTHEAST UNIV

Denitration method for two-section microwave catalytic reaction bed

The invention relates to a denitration method for a two-section microwave catalytic reaction bed. The method comprises the following steps: filling a catalyst in a reaction tube of a microwave catalytic reactor device, thereby forming a microwave catalytic reaction bed, and then generating a gas-solid reaction by use of a processed gas while passing by the microwave catalytic reaction bed, thereby performing the denitration treatment. The microwave catalytic reaction bed is composed of two independent microwave catalytic reaction beds which are mutually connected in series; Cu-HZSM-5 or Mn/MgFe2O4 catalyst is taken as the catalyst in a first section microwave catalytic reaction bed; activated carbon or activated carbon loaded MnO, CuO or CeO-CuO, MgO-FeOx, CeO-ZrO2 catalyst is taken as the catalyst in a second section microwave catalytic reaction bed; and the processed gas passes by the first and second section microwave catalytic reaction beds in turn and is subjected to a direct decomposition reaction and a selective reduction reaction in turn, thereby removing the nitric oxide. The denitration method has the advantages of being free from secondary pollution and corrosion, high in conversion rate, small in energy consumption, energy-saving, environmentally-friendly, low in running cost, and the like.
Owner:XIANGTAN UNIV

Concentrating photovoltaic solar power generation and heating machine

The invention belongs to the field of solar energy development and utilization and particularly relates to a concentrating photovoltaic solar power generation and heating machine. The concentrating photovoltaic solar power generation and heating machine comprises a solar energy lens group condensation system, a power generation system, a heating system and a tracking system, wherein the solar energy lens group condensation system forms a lens group by a monomer convex lens through an array combination; the power generation system adopts an III-V group semiconductor cell capable of bearing condensing illumination with 1000 times, and thus generates the same electric energy relative to a crystal silicon chip by using few III-V group semiconductor cells; and the tracking system has a function of real-time and automatic tracking of the solar optical axis so as to obtain the maximum energy efficiency value of the solar energy. The problem of heat dissipation of the concentrating photovoltaic cells is a technical problem always puzzled in the industry. The invention adopts a technical scheme using water cooling heat dissipation, which can fundamentally solve the problem and reliably obtain the conversion energy of two kinds of solar energy, namely power generation and heat supply, as well as change the final conclusion that you can't have your cake and eat it.
Owner:宁波龙巍环境科技有限公司

Preparation method of graphene oxide and quinone compound co-modified hydroxyl-containing macroporous foam carrier

The invention relates to a preparation method of a graphene oxide and quinone compound co-modified hydroxyl-containing macroporous foam carrier and belongs to the technical field of water treatment in environmental engineering. The preparation method comprises the following steps: preparing a graphene oxide modified polyurethane foam composite material from a hydroxyl-containing macroporous foam material at the room temperature by virtue of a physical adsorption method, and aminating the composite material until graphene oxide and polyurethane foam contain a certain amount of primary amine; and reacting by virtue of an anthraquinone compound containing sulfonyl chloride groups with primary amine, so as to fix a quinone compound, wherein the hydroxyl-containing macroporous foam material can be polyvinyl alcohol foam or polyvinyl alcohol doped polyurethane foam and the like. According to the preparation method, the quinone compound and graphene oxide are simultaneously fixed to the surface of the macroporous foam material, so that the contact among a redox mediator, graphene and microorganisms is facilitated; and the technical bottlenecks that graphene and the water soluble quinone compound in a water treatment system are difficult to be recycled and flow out along with water to cause secondary pollution are solved.
Owner:DALIAN UNIV OF TECH

Business opportunity mining method based on enterprise portraits

The invention discloses a business opportunity mining method based on an enterprise portrait, and the method comprises the steps: obtaining structured, semi-structured and unstructured mass data through Internet data and enterprise basic data, carrying out the preprocessing of the data, and forming an enterprise service data center on the basis of the data; dynamically matching deduplication and user basic information through a system to form a unique ID of the whole network of the user; integrating and cleaning the data of each dimension of the enterprise, and binding the data with the uniqueID of the enterprise to form a portrait system; carrying out model training through multi-dimensional enterprise portraits and enterprise historical order data, and improving the user conversion rateand the repurchase rate; enabling different portraits to correspond to different recommendation rules, pushing proper products to enterprises in time, and pushing business opportunities to matched business personnel through an intelligent matching algorithm; obtaining sales feedback data in time through buried points, and building a business opportunity mining evaluation model; and performing secondary optimization on the business opportunity mining model in combination with results of machine learning and business personnel feedback information.
Owner:汉唐信通(北京)科技有限公司

Vanadium-titanium magnetite treatment method

The invention provides a vanadium-titanium magnetite treatment method. The vanadium-titanium magnetite treatment method comprises the following steps that rough vanadium-titanium magnetite is subjected to mineral separation, and vanadium-titanium magnetite concentrate is obtained; the vanadium-titanium magnetite concentrate and coal are mixed and then directly added into a rotary kiln to be prereduced, and calcine and rotary kiln smoke are obtained; the calcine is transferred into an electric furnace to be subjected to reduction smelting, and vanadium containing molten iron, titanium slag andelectric furnace smoke are obtained; and the vanadium containing molten iron is transferred into a converter to be subjected to converting, and vanadium slag and semisteel are obtained. According to the vanadium-titanium magnetite treatment method provided by the embodiment of the invention, the vanadium-titanium magnetite concentrate is subjected to the treatment processes including rotary kiln prereduction, electric furnace reduction smelting and converter converting, thus, the metallization rate of the obtained calcine is high, the content of iron and vanadium in the titanium slag is low, valuable metal elements are sufficiently utilized, the high-grade vanadium slag and the high-grade semisteel are obtained, the foundation is laid for follow-up processing of the iron element and the vanadium element, the technological process is short, the production energy consumption can be decreased, environmental pollution is reduced, and the investment cost and production cost are reduced.
Owner:CHINA ENFI ENGINEERING CORPORATION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products