36results about How to "High conversion rate" patented technology

The invention discloses a catalyst for denitrating smoke at a low temperature and a production method and an application thereof, the catalyst consists of a main active component (A) and an assistant active component (B), wherein the main active component (A) is oxide of manganese, the assistant active component (B) is one or a plurality of metal oxides of cobalt, cerium, copper, iron, molybdenum, zinc and tin, and a mole ratio range of metal elements of the main active component (A) to the assistant active component (B) is that (A) : (B) is equal to 2:1 to 100:1. The catalyst provided by the invention is produced by the method of precipitation. The catalyst works at the low temperature of 120-200 DEG C, and works by directly adopting the waste heat of smoke at the low temperature in a coal-fired power plant, therefore the advantages of energy-saving and consumption-reducing are obvious; under a space velocity of 100,000h<-1>, a high efficiency of nitrogen oxide conversion rate is maintained, and a high activity is realized at the high space velocity. Compared with selective catalytic reduction (SCR) catalyst, the consumption of the catalyst provided by the invention is less with same treatment amount of smoke, and expenses on investment and maintenance are saved more.

The invention discloses a VOCs elimination catalyst and a preparation method thereof. According to a hydrothermal process, a reducer and an accelerator are added, and the Co/Mn mole ratio is regulated to regulate and control the shape and nanoparticle size of the catalyst. The catalyst has higher benzene catalytic oxidation activity within a wider temperature range. The benzene catalytic conversion rate of the catalyst at 207 DEG C is up to 90%. The catalyst disclosed by the invention has better purifying effects than the traditional benzene catalytic oxidation catalyst. The preparation method has the advantages of simple preparation technique and low cost, and is convenient to operate. The catalyst has high benzene conversion rate, and has obvious industrial application values.

The invention relates to a method for preparing epoxypropane in a microchannel reactor. The method mainly solves the problems of existence of explosive danger, low conversion rate and low selectivity in the prior art. The technical scheme is as follows: by adopting the method for preparing epoxypropane in a microchannel reactor, gas-phase propylene contacts hydrogen peroxide generated by hydrogen and oxygen in-situ compounding in the microchannel reactor to directly generate the epoxypropane under the action of a catalyst; and propylene and oxygen directly react under the action of a catalyst to generate the epoxypropane, the epoxypropane is collected at the lower reach of the microchannels in the liquid-phase form, and the unreacted gas cyclically enters the microchannel reactor inlet or is evacuated after being diluted. The microchannel reactor comprises at least one microchannel, wherein the sectional dimension of each microchannel is 1 micrometer-1 centimeter, and the sectional dimensions of the microchannel in positions of different lengths are identical or different; and the catalyst is positioned in at least one part of the axial length of the microchannel. The technical scheme well solves the problems, and can be used for preparing epoxypropane.

The invention provides anextraction method of rhodiola. The extraction methodcomprises the following steps: weighing, crushing, removing impurities through water extraction, performing leaching extraction, concentrating an extract,performing alcohol precipitation and drying. The method of simultaneous extraction and separation is adopted, an extraction system and a separation and purification system are combined,specific and simple impurity removing method, extraction method and purification method are combined, the content of the obtained total flavones in the extract is higher than 90%, a selected preparation technology is simple and low in energy consumption and an environment-friendly production mode is achieved.

The invention discloses deepest mystery of space static and constant unit of electric material; constant definite proportion transformational relation is adopted to multiply the conversion efficiency of the electric material, so as to overcome the crisis of being lack of electrical coal and oil geology resources; new energy including devices in the fields such as photovoltaic energy capital construction, transportation vehicles, photovoltaic grid-connected power station, sailing ships, toys, a telecommunication system, street lamps, wind power generation, excursion boats, computers and the like can be provided, thus benefiting mankind.

The invention discloses a synthesis technology of maleic anhydride-crylic acid-methyl acrylate copolymer. The synthesis technology comprises steps of (a) firstly, respectively preparing certain concentration of maleic anhydride solution, crylic acid solution, ammonium persulfate solution and a certain amount of methyl acrylate according to certain proportion; (b) then adding the maleic anhydride solution into a vessel; (c) then starting a stirring and temperature rising device; (d) after achieving certain temperature, keeping the constant temperature, dripping initiator and monomer solution, after dripping, rapidly raising temperature up to certain value; (e) after stirring and reacting for a period at the constant temperature, stopping, cooling down naturally, so as to obtain the target product. The synthesis technology can be used for rapidly preparing the maleic anhydride-crylic acid-methyl acrylate copolymer, the preparation process is simple, the conversion rate of the preparation is high, and the preparation cost of the maleic anhydride-crylic acid-methyl acrylate copolymer is greatly lowered.

The invention belongs to the technical field of environmental protection and relates to a method for ecologically treating organic waste by using eupolyphaga. Particularly, the pretreated organic waste is subjected to biological waste conversion by using eupolyphaga. According to the method, organic waste treatment is combined with eupolyphaga breeding, the organic waste is converted and utilized,no pollution is generated in the process, a large amount of eupolyphaga is bred, eupolyphaga polypide and ootheca are good-quality protein feed raw materials, and excrement can be used as fertilizerfor use; the whole process is ecological and environmentally friendly, by pretreating the organic waste, the treatment conversion rate of the organic waste in eupolyphaga is high, the cost of breedingeupolyphaga is lowered, and the economic benefit is good.

The invention discloses a synthesis process of a poly-MA-AA-Mac (poly-maleic anhydride-acrylic acid-methyl acrylate) anti-scale agent based on control of pH value. The synthesis process disclosed by the invention comprises the following steps of: (a), firstly, respectively preparing maleic anhydride solution, acrylic acid solution and methyl acrylate with a certain concentration according to a certain proportion; (b), then, adding maleic anhydride solution, acrylic acid solution and methyl acrylate into different containers by adopting different monomer dropping manners, and adjusting the pH of the solution to be 7-10; (c), starting a stirring and temperature-increasing device, stopping after keeping constant-temperature stirring reaction for a certain time, naturally cooling, and thus obtaining the target object. The synthesis process disclosed by the invention is capable of rapidly preparing the poly-MA-AA-Mac anti-scale agent; furthermore, the preparation process is simple; the preparation conversion rate is high; the preparation cost of maleic anhydride-acrylic acid-methyl acrylate copolymer is greatly reduced; in addition, the product conversion rate and the product performance are improved by controlling the pH value in the synthesis process.

The invention provides an electric vehicle charging system capable of generating power by solar energy, which comprises a solar panel fixed on a vehicle roof and an intelligent voltage conversion and control module, and is characterized in that the voltage output of the solar panel fixed on the vehicle roof is connected with the intelligent voltage conversion and control module; the output voltage of the intelligent voltage conversion and control module is used for charging a power battery of the electric vehicle, and the intelligent voltage conversion and control module is used for controlling and exciting the fixed solar panel to generate power at the maximum conversion rate at different time and different illumination intensities and realizing communication butt joint with the electric vehicle through an internal charging controller; and the maximum power is output to charge the power battery, so that the charging amount reaches the practical level, charging is monitored and protected, and the device is attractive and safe. Solar charging is applied to the electric vehicle, and the popularization and promotion value is achieved.

The invention belongs to the technical field of photodynamic phototherapy photosensitizer medicines for microvascular diseases. In particular to a hypocrellin derivative as shown in a formula I, and a stereoisomer, a position isomer, an isotope label, a solvate, a polymorphic substance, a prodrug or a pharmaceutically acceptable salt thereof. The maximum light absorption wavelength of the hypocrellin derivative as shown in the formula I is 400-600nm, and the depth of penetrating tissues conforms to the focus depth of microvascular diseases. The problem of scar-free treatment can be solved, absorption of visual pigments can be avoided as far as possible, and teratogenic new blood of a focus is selectively destroyed without damaging normal tissues or visual pigments, so that the effect of photodynamic phototherapy is exerted to the greatest extent.