40results about How to "Realize targeted regulation" patented technology

The invention provides a gasification device and a gasification method for preparing hydrogen-rich synthetic gas from biomass. The device comprises a biomass feeder, a mixer, a pyrolysis chamber, a gasification chamber, a gasified gas separator, a combustion chamber, a flue gas separator, a bin and a butterfly valve. In the method, the biomass gasifying process is divided into three parts, namelybiomass pyrolysis, semicoke gasification and heat carrier circulation. Through the method and the device, the synthetic gas with the tar content less than 200mg/Nm<3> and the H2/CO ratio more than 1.1 can be obtained, and the energy utilization rate and the process economy are obviously improved.

The invention discloses a method for promoting microbes to synthesize docosahexaenoic acid (DHA) by an exogenous additive factor. The method comprises the following steps of: inoculating the microbes into a fermentation culture medium for fermentation to synthesize the DHA, adding the exogenous additive factor into the fermentation culture medium before the fermentation synthesis, and/or adding a precursor matter for synthesizing fatty acid during the fermentation synthesis, wherein the microbes may be any one of thraustochytrium, schizochytrium and crypthecodium cohnii; the exogenous additive factor is any one or the combination of several of acetic acid, citric acid and simvastatin; and the precursor matter for synthesizing the fatty acid is the acetic acid. In the invention, under simple and effective fermentation control, substrate conversion efficiency is improved, operation is simple, no extra labor and equipment are added, and the synthesizing concentration and production strength of a target product can be improved by just relatively low additive investment, so that production cost is reduced. And the method is pollution-free, increases no manpower and material resources, reduces the cost, is simple and convenient and creates economical benefit.

The invention discloses a method and a device for pulse composite magnetic field assisted GMAW high-speed welding. The device comprises a direct-current pulse adjustable excitation power supply and apulse composite magnetic field generation device, and the direct-current pulse adjustable excitation power supply is connected with the pulse composite magnetic field generation device; the pulse composite magnetic field generation device comprises a GMAW welding gun and magnetizing iron cores arranged on the outer edge of the GMAW welding gun; and the magnetizing iron cores comprise a plurality of magnetic poles, magnetic pole heads are arranged along the circumference of the GMAW welding gun, an included angle is formed between the upper portion of each magnetizing iron core and the center line of the GMAW welding gun, and excitation coils are wound around the upper portions of the magnetizing iron cores. By controlling the inclination angle in the welding direction, the amplitude and frequency of left and right swing and residence time on two sides of a weld joint of droplet metal and a welding arc, transverse spreading and backward flowing of liquid metal in a molten pool can be improved, and under certain welding parameters and magnetic field parameters, the purposes of eliminating the defeats namely, undercut and the humping defect can be achieved.

The invention provides a coal-based active coke hole structure grouping regulation method based on coal internal ash catalytic activation and relates to the field of porous carbon materials. The method aims to solve the problems that in traditional coal-based porous carbon material preparation methods, microporous carbon materials obtained through physical activation methods have poor adsorption academic properties and universality and chemical activation methods require a large number of activators and a high cost. Coal is used as a raw material, an inorganic component in inherent ash of thecoal is directionally removed through different kinds of de-ashing pretreatment, namely acid washing or alkaline washing, the catalytic pore forming effect of the natural ash is utilized, and after acatalytic physical activation process and a subsequent cleaning process, a microporous carbon material or a graded porous carbon material with excellent gas adsorption/storage characteristics can be obtained. The method is applied to the field of porous carbon materials.

The invention discloses colloidal gold partly modified by polyethylene glycol and a preparation method thereof. The preparation method comprises the following steps of (1) preparing the colloidal gold; (2) fixing nanogold on a glass solid phase carrier; (3) modifying the colloidal gold by using the polyethylene glycol; and (4) preparing a solution of the colloidal gold partly modified by the polyethylene glycol. 80-95% of the surface region of the colloidal gold prepared by the method is covered by the polyethylene glycol, and the other 5-20% of the surface region is still a bare gold surface. The stability of the colloidal gold partly modified by the polyethylene glycol prepared by the preparation method in complex mediums and the selective recognition of the colloidal gold to target proteins are obviously enhanced. Through asymmetrically modifying the colloidal gold, directional adjustment and control of reactions can be realized, and the uncontrollable agglomeration and sedimentation problems caused by isotropic colloidal gold in traditional method are also solved; and the colloidal gold partly modified by the polyethylene glycol is expected to be widely used in nano-assembling and biosensing fields.

The invention discloses a method for restoring heavy metals by regulating microorganisms through iron-containing minerals, and belongs to the field of biological treatment of pollutants. The method comprises the steps of enriching and domesticating original florae in heavy metal contaminated soil and water, and then adding the enriched original florae and different iron-containing minerals into the heavy metal wastewater together. The iron-containing minerals have certain conductivity as a (semi)conductor material, and can be used as an electron shuttle carrier to mediate an electron transferprocess. Interspecific electron transfer among anaerobic microorganisms can be enhanced, directional regulation of communities are realized, and reduction of high-valence heavy metals can be cooperated. The required iron-containing minerals widely exist in the nature, the raw materials are easy to obtain, the operation is simple, the reduction activity of anaerobic microorganisms can be remarkablyregulated and controlled, and the remediation effect of heavy metal pollutants is enhanced.

The invention discloses a directional regulating method for a systematic structure of a high-strength high-toughness ultra-fine hard alloy material. The method comprises the steps of establishing a researching platform for designing a hard alloy cutter substrate and a wearing-resistant coating microsturcture; performing directional regulating on distribution and dispersion of a crystal grain inhibitor and segregation thickness in a WC/Co interface according to a performance requirement; establishing thermodynamics information of a temperature interval, a solubility interval and phase stability in generating each deposit of a diamond coating, and researching influence of technical conditions such as precursor kind and component and deposition temperature and pressure to properties such as phase kind and component of the diamond coating; and based on a metastable phase graph of a pseudobinary CrN-AlN system and a phase change driving force of each phase, predicting the phase structure and the phase composition of sosoloid at different temperatures, thereby realizing phase field simulation of a CrAlN base coating spinodal decomposition process. According to the method of the invention, a cooperative function and a strengthening and toughening mechanism of the crystal grain growth inhibitor are disclosed in an atom scale, and furthermore directional regulating of the high-strength high-toughness ultra-fine hard alloy microstructure is realized through a thermal-dynamic analysis facility.

The invention belongs to the technical field of graded utilization of low-rank coals and biomasses and specifically relates to a graded utilization device and method for low-rank coals and biomasses based on chemical chains. A reduced oxygen carrier and low-rank coal particles or biomass particles are mixed to be subjected to a rapid pyrolysis reaction, and the reduced oxygen carrier generates anoxidized oxygen carrier; pyrolysis cokes, the oxidized oxygen carrier and a pyrolysis gas-liquid phase product are separated at the dense phase stage of a two-stage pyrolysis reactor; the pyrolysis cokes and the oxidized oxygen carrier obtained by separation and an oxidized oxygen carrier from an air reactor simultaneously enter a gasification reactor for a gasification reaction, and the oxidizedoxygen carrier is reduced into the reduced oxygen carrier; and the reduced oxygen carrier respectively enters a two-stage air reactor and the two-stage pyrolysis reactor through a distributor. In thewhole process, the graded and efficient recycle of solid carbon-containing raw materials with relatively high volatile components such as the low-rank coals and the biomasses is realized, and meanwhile, pyrolysis reaction control, gradient utilization of energy and internal separation of a reaction product are realized.

The invention relates to a method for preparing polycarbonate through catalysis of an ionic liquid. The method comprises the following step: carrying out a melt polymerization reaction on diester carbonate and a dihydroxy compound under the action of an amide ionic liquid catalyst to generate polycarbonate. According to the method disclosed by the invention, the amide ionic liquid catalyst with high catalytic activity, good selectivity and excellent thermal stability is obtained by taking an amide-containing compound as an anion and tetraalkylphosphorus as a cation, and polycarbonate with a large molecular weight and a high glass-transition temperature is obtained through catalysis. The method disclosed by the invention is mild in reaction condition, designable in catalyst structure and relatively high in reaction rate; a solvent is not needed in the reaction process, virulent phosgene is not used, and environmental pollution is avoided; and a product obtained by the reaction is free of catalyst residue and toxic substances, and the method is a green and environment-friendly low-cost polycarbonate preparation process.

The invention belongs to the technical field of functional food, and provides a weight-losing composition and application thereof in preparation of weight-losing products. The weight-losing composition comprises plant polyphenol and prebiotics, and the mass ratio of the plant polyphenol to the prebiotics is 1: 9 to 9: 1. The plant polyphenol is one or two of a polygonum cuspidatum extract, an elderberry extract, a vaccinium myrtillus extract, chinaroot greenbrier polyphenol and an acai berry extract. The prebiotics are a combination of any two or three prebiotics selected from the group consisting of mannose oligomer, xylooligosaccharide, galactooligosaccharide and stachyose. In order to solve the technical problem that the skinny bacteria (Akkermansia muciniphila) in the intestinal tract cannot be directionally regulated, several plant polyphenols and prebiotics are combined, so that the growth of fat bacteria is inhibited while the skinny bacteria in the intestinal tract are proliferated, and the directional regulation and control of micro-ecology in the intestinal tract are realized. The intestinal flora is regulated and controlled through the natural prebiotics and plant polyphenols, so that the body achieves a good weight reduction effect.

The invention provides a hazardous waste vitrification regulation and control system. The system comprises a liquid nitrogen cooling subsystem, a flue gas dust removal subsystem and an energy recovery subsystem, wherein the liquid nitrogen cooling subsystem is used for cooling hazardous waste molten materials; the flue gas dust removal subsystem is used for performing innocent treatment on tail gas generated in the liquid nitrogen cooling subsystem; and the energy recovery subsystem is used for recovering and reusing heat in a ceramic membrane filtration subsystem. The invention further provides a regulation and control method based on the hazardous waste vitrification regulation and control system. By means of the method and the system, directional regulation and control over a hazardous waste molten glass body are achieved, and the yield of the hazardous waste molten glass body is increased and can reach 100%; tail gas generated after the hazardous waste is molten is filtered, and harmless treatment of the tail gas is achieved; and energy recycling is achieved, and energy consumption of the system is reduced.

The invention provides a method for adjusting the color of light-colored pterocarpus macrocarpus by saturated steam heat treatment. Saturated steam is used as a hot medium, the conjugated structure ofthe chromophoric system and structure of wood is increased, so that the color of the light-colored pterocarpus macrocarpus is deepened and tends to be the wood color of deep-colored pterocarpus macrocarpus. The light-colored pterocarpus macrocarpus treated by the method has a uniform color, and is changed in a redder and deeper direction in color and similar to the color of the deep-colored pterocarpus macrocarpus. The processed light-colored test material red-green chromaticity index change value [delta]a* is greater than or equal to 4, yellow-blue chromaticity index change value [delta]b* is greater than or equal to 4, and lightness value [delta]L* is decreased to less than or equal to -6. The method is superior in that the color of the light-colored pterocarpus macrocarpus is adjustedby the saturated steam heat treatment, no chemical reagent is introduced, environmental protection is achieved, the cost is lower, and the method is suitable for large-scale industrial processing andproduction.

The invention provides a thermoelectric conversion device, a preparation method thereof and a thermoelectric conversion system. The thermoelectric conversion device comprises a first electrode; the P-type element and the N-type element are located on the surface of one side of the first electrode and electrically connected with the first electrode; the second electrodes are located on the sides, away from the first electrode, of the P-type element and the N-type element respectively; the first heat conducting plate is positioned on the first electrode and deviates from the P-type element and the N-type element; the second heat conducting plate is positioned on the second electrode and deviates from the P-type element and the N-type element; the microstructure is located on the surface of the first heat-conducting plate and/or the second heat-conducting plate, the direction from the first surface of the microstructure to the second surface of the microstructure is the same as the direction from the first heat-conducting plate to the second heat-conducting plate, and the area of the first surface is smaller than that of the second surface. The microstructure realizes directional regulation and control of heat flow in the thermoelectric conversion device, so that the temperature difference between the two ends of the thermoelectric conversion device is increased, and the thermoelectric conversion efficiency or refrigeration power of the thermoelectric conversion device is improved.