41results about How to "Easy for industrial scale-up" patented technology

The invention discloses a method for preparing a high-strength ultra-thin anode supported solid oxide fuel cell, the method comprises: the slurry of an anode support is firstly used for preparing an anode support green compact with a certain thickness by a tape casting method, then an active anode slurry and an electrolyte slurry are sprayed onto the anode support green compact by using an air direct spraying method, the green compact of the composite material is further increased to a certain temperature by a certain heating rate for the calcination, then a half cell is obtained, then the cathode slurry is finally sprayed on the half cell by the air spraying method, and a single cell is obtained by drying, calcinating and other steps. The obtained flat-plate single cell has the advantages of high mechanical strength of the anode support, even thin active anode, conditional method, easy control, simple process, easy industrial enlargement, etc.

The invention discloses a preparation method for oil-phase silver nanoparticles. Micromolecule alcohol, water, a non-polar solvent and a surface active agent are mixed to obtain a uniform solution; inorganic silver salt is dissolved into water or an organic solvent to obtain a silver salt solution; a reducing agent is dissolved into water or an organic solvent to obtain a reducing agent solution; the obtained uniform solution, the obtained silver salt solution and the obtained reducing agent solution are added into an over-gravity rotary bed reactor for reacting, and a nano-silver microemulsion is obtained; and the non-polar solvent is added into the nano-silver microemulsion, and the oil-phase silver nanoparticles are obtained. The silver nanoparticles are small in grain size, narrow in granularity distribution, good in oil phase dispersibility and free of sedimentation after standing is carried out for more than three months.

The invention relates to a catalyst for preparing 1,3-butadiene through ethanol condensation. The catalyst is acid-base bifunctional mesoporous CuZnZrMgAl mixed metal oxide, wherein the atomic percent ratio of metal elements, i.e., Cu / Zn / Zr / Mg / Al in the catalyst is (9.68 to 36.43): (0 to 7.34): (0 to 7.62): (18.22 to 62.56): (20.93 to 48.12). The catalyst has the advantages of low reaction temperature, multielement active ingredient synergetic effect and good catalyst performance.

The invention discloses an external-heated and solid heat carrier combined rotary dry-distillation method and device. The method comprises the steps of mixing a heat carrier and dried / preheated raw coal, and enabling a mixture of the heat carrier and the dried / preheated raw coal to be subjected to dry distillation in a dry distillation furnace, so as to generate hot semicoke and coal gas, wherein one part of the hot semicoke is a semicoke product, one part of the hot semicoke is hot coke granules, and the hot coke granules serve as the heat carrier and are applied to coal gas dedusting after the hot coke granules are heated; smoke generated during semicoke heating is used for drying and preheating raw coal. The device comprises a raw coal preheating and drying oven, a semicoke heating furnace and the dry distillation furnace, wherein the raw coal preheating and drying oven and the semicoke heating furnace are located above the dry distillation furnace, and a material outlet of the raw coal preheating and drying oven and a material outlet of the semicoke heating furnace are communicated with a material inlet of the dry distillation furnace; the dry distillation furnace and the semicoke heating furnace are communicated by a hot coke granule circulating and conveying system; the dry distillation furnace preferably is an external-heated dry distillation furnace. The method and the device, disclosed by the invention, have the advantages that the thermal efficiency is high, the calorific value of the coal gas is high, the dust content is low, and the yield is large; the device is compact in structure and small in floor area.

The invention relates to a resistance switch material in Ag / Ag2S core / shell nanometer structure and a preparation method thereof. The Ag / Ag2S core / shell nanometer structure takes Ag as a core and Ag2S as a shell; the shape is sphere or similar to sphere; the average diameter is 0.01-5.0 microns; and the thickness of the Ag2S shell is 2-100 nanometers. The preparation method comprises the steps of: adding silver nitrate in a glycol / PVP (Polyvinyl Pyrrolidone) system to react; adding sulfur powder to react continuously; and washing the reacted precipitate by ethanol and then drying to obtain Ag / Ag2S core / shell nanocrystalline. The Ag / Ag2S core / shell nanocrystalline provided by the invention can be used as a resistance switch material to construct an Ag2S resistance switch, and has the advantages of simple and convenient preparation, economy, and suitability for industrial amplification and practical application.

The invention discloses a cycling elution biomimetic peristaltic enzymolysis reactor and a method thereof, comprising a biomimetic peristaltic enzymolysis reactor, a peristaltic driving device (10), an elution device (19), a membrane filtration subassembly (12), enzymolysis solution cycling pump (15), a sugar concentration analyzer (20), spiral material feeding / discharging devices (8,9) and a control system. The peristaltic device comprises a peristaltic rod and a peristaltic driving device, and conducts reciprocating motion at the parallel direction of the axial direction of the reactor; the sugar concentration analyzer controls cycling elution of cellulase in the enzymolysis reactor and separation and concentration of the cellulase and the sugar solution in the membrane separation system. The characteristics of the reactor are as follows: through the biomimetic peristaltic role, mass transportation between the solid-phase substrates is improved, and the accessibility of solid-phase substrate is increased; the cycling elution enzymolysis can solve the problem of low loading coefficient, low loading coefficient for traditional reactor, the invention provides high-concentration sugar platform; due to the enzymolysis process without solid flipping mechanical transmission, the reactor with simple structure has low energy consumption, facilitates the industrial scale-up.

The invention discloses a preparation method of a high-performance ZIF-8-containing nanofiltration membrane based on two-step addition of sodium polystyrene sulfonate. The method comprises the following steps: (1) modifying an ultrafiltration base membrane by using a sodium polystyrene sulfonate (PSS) aqueous solution; (2) introducing an aqueous solution containing Zn<2+>; (3) introducing an aqueous solution containing 2-methylimidazole and PSS, preparing ZIF-8 by using an in-situ growth method, and adjusting the particle loading capacity; (4) introducing an aqueous solution containing piperazine (PIP); and (5) introducing an n-hexane solution containing trimesoyl chloride (TMC), and preparing a polyamide skin layer through interfacial polymerization. ZIF-8 is deposited on the surface of the base membrane through the in-situ growth method, the preparation method is simple and convenient, and industrial amplification is facilitated; in the step (1), anchoring of Zn<2+> on the surface ofthe base membrane is realized by using the PSS, and in the step (3), the deposition amount of ZIF-8 is increased by using the PSS, so that agglomeration of the ZIF-8 is avoided; and the polyamide nanofiltration membrane containing ZIF-8 prepared by the method shows high water flux and stable interception performance on divalent ions and dyes.

The invention discloses a bionic intestinal flow self-peristalsis reactor system and a method. The bionic intestinal flow self-peristalsis reactor system comprises a peristalsis driving device, a bionic intestinal flow self-peristalsis reactor, a pressure regulating device, a feeding and discharging device, a control system and a circulating pipeline, the bionic intestinal flow self-peristalsis reactor system is characterized in that the bionic intestinal flow self-peristalsis reactor comprises a plurality of peristalsis sections, all the peristalsis sections are connected in series to form abionic intestinal tract, the front end of the bionic intestinal tract is connected with the peristalsis driving device, the pulsating flow characteristic of a fluid in the bionic intestinal tract is provided by the peristalsis driving device, the peristalsis driving device provides pulsating pressure for the fluid in pipes so as to realize periodic pulsating flow of the fluid, the tail end of thebionic intestinal tract is connected with the feeding and discharging device through the pressure regulating device, the feeding and discharging device is connected with the peristalsis driving devicethrough the circulating pipeline, the peristalsis driving device is controlled by the control system. The bionic intestinal flow self-peristalsis reactor system and the method can be widely applied to the fields of heat transfer, chemical industry, food and the like.

The invention discloses a preparation method of a denitration catalyst employing shape effect for enhancing low temperature activity, which belongs to the technical field of control of atmosphere pollution. The method comprises the following steps: 1) weighing a CeO2 carrier and dissolving the CeO2 carrier in deionized water, weighing a manganous nitrate solution according to a mol ratio of Mn to Ce being 1.5:5-2:5, dumping the weighed CeO2 carrier in the manganous nitrate solution to obtain reaction liquid; 2) evaporating the reaction liquid under oil bath to dryness, then placing the material in a roasting oven for drying the material at the temperature of 105-115 DEG C to obtain a dried material; and 3) calcinating the dried material in a muffle furnace at the temperature of 395-405 DEG C for 3-4 hours to obtain the denitration catalyst employing shape effect for enhancing low temperature activity which takes CeO2 as the carrier. The invention also discloses the catalyst prepared by the method and an application thereof. The denitration catalyst has the advantages of good low temperature activity, high selectivity and wide activity temperature window. The preparation method has the advantages of simple and controllable process, and convenient operation process, and can be used in tail ends of the flue gas purifying apparatus in fire coal power plants, cement plants, and glass kilns and furnaces. The preparation method has the characteristics of energy saving and environmental protection.

The invention discloses a two-aqueous-phase extraction method of polygonatum sibiricum polysaccharide, and belongs to the technical field of bioengineering. The method solves the problems of low efficiency, high cost and low product purity of existing polygonatum sibiricum polysaccharide separation and purification methods. The method comprises the following steps: crushing polygonatum sibiricum raw materials, degreasing, drying, and performing extraction by using a water extraction method to obtain polygonatum sibiricum polysaccharide extract solution; and extracting and separating the polygonatum sibiricum polysaccharide by adopting a small-molecular organic solvent-soluble salt two-aqueous-phase extraction system, concentrating under reduced pressure, and drying to obtain a purified polygonatum sibiricum polysaccharide product. According to the method, the polygonatum sibiricum polysaccharide is extracted and separated by adopting the small-molecular organic solvent-soluble salt two-aqueous-phase extraction system, so that the separation and purification efficiency is greatly improved, the production cost is reduced, soluble impurities in the polygonatum sibiricum polysaccharideare effectively removed, and the product purity is improved; and the raffinate contains a small amount of polygonatum sibiricum polysaccharide, can be separated and purified again after being recovered, and the method is low in cost and convenient for industrial amplification.

The invention discloses a method for preparing nanometer perovskite type rare earth oxide in the technical field of catalyst, which comprises that: firstly, a rare earth raw material and a transition metal raw material are matched and then are mixed with strong base to be prepared into an even pasty mixture; and then the pasty mixture is orderly subjected to grinding, calcination, as well as washing and drying treatment to obtain nanometer rare earth composite oxide. The method adopts a mechanicochemical method to prepare a precursor substance, simplifies preparation working procedures, does not use an organic solvent in the whole reaction system, cannot cause the pollution to the environment, reduces the cost, and is easy for industrialized scale-up preparation.

The invention discloses a method for separating and extracting epsilon-polylysine, and belongs to the technical field of extraction and separation. By utilizing an organic solvent / inorganic salt aqueous two-phase system, the method for separating and extracting epsilon-polylysine is provided, and the method for separating and extracting epsilon-polylysine has the advantages that the generation ofwaste water can be reduced, the operation steps are simplified, the extraction cost is reduced, the extraction recycling rate is high, and the purity of the extracted product is high. By means of themethod, epsilon-polylysine is separated and extracted, the recycling rate can reach 98% or above, and compared with traditional ion exchange extraction methods, the method has obvious advantages.

The invention discloses a preparation method of a lysine acetate bulk drug, and belongs to the technical field of amino acid preparation. According to the preparation method, a conventional method ofusing an ion exchange column to remove chlorine is not used any more, thus acid, alkali, or ammonia water is not used, and the environmental pollution is reduced. An organic solvent / inorganic salt dual water phase system is established to separate and extract lysine acetate, and compared with a conventional ion exchange extraction method, the wastewater amount and consumed acid and alkali are further reduced. The recovery rate of provided preparation method can reach 99.8%, the product purity can reach 99.7%, and the light transmittance can reach 99.8%.

The invention discloses a method for extracting epsilon-PL (polylysine) and belongs to the technical field of extraction and separation. The method for directly separating and extracting epsilon-PL from unprocessed fermentation liquor by ion exchange resin is provided, and according to the method, extraction steps can be greatly reduced and the extraction cost is obviously reduced; with the adoption of the method for extracting epsilon-PL, the recovery rate can be as high as 75% or higher, the purity of a recovered finished product is as high as 98% or higher, and the recovery rate and the purity are increased by 15% and 2% respectively as compared with those achieved with the traditional ion exchange extraction method, so that the method has remarkable advantages.

The invention provides separation technology for a gene recombinant heat-resistant manganese superoxide dismutase and belongs to the technical field of bioseparation engineering. By mainly applying the ultrafiltration separation technology, high-purity heat-resistant manganese superoxide dismutase can be separated from recombinant Escherichia coli (E. coli) by three simple steps of crushing, centrifuging and ultrafiltration; and in the separation preparation process, chromatography and electrophoresis centrifugal technology are not used, the extraction period is greatly shortened, and the rapid large-scale preparation of the recombinant heat-resistant manganese superoxide dismutase is realized.

The invention discloses a bionic intestinal tract self-peristalsis reactor, which comprises a peristalsis driving device, a plurality of peristalsis sections, hard bushings, a fixing device and a valve, and is characterized in that in the bionic intestinal tract self-peristalsis reactor, all peristalsis sections are connected in series to form a bionic intestinal tract, the front end of the bionicintestinal tract is connected with the peristalsis driving device, the tail end of the bionic intestinal tract is connected with the valve, each peristalsis section is made of an elastic hose with acertain stretching ratio, the pulsating flow characteristic of a fluid in the elastic hose enables the flexible elastic pipe wall of the elastic hose to generate periodic peristalsis, the outer surface of each section of elastic hose is sleeved with the hard bushing, the hard bushings are used for limiting the maximum peristalsis amplitude of the elastic hoses, all the peristalsis sections are rigidly connected through rigid connecting components, the rigid connecting component is fixedly connected with the peristalsis section through a hoop, and the pulsating flow characteristic of the fluidin the bionic intestinal tract is provided by the peristalsis driving device. The bionic intestinal tract self-peristalsis reactor of the invention can be widely applied to the fields of heat transfer, chemical industry, food and the like.

The invention discloses a method for treating fluorine-containing olefin production waste, which is particularly suitable for a dechlorination system taking metal zinc as a dechlorinating agent and anon-alcohol polar organic solvent as a solvent. The method comprises the following steps: dissolving zinc chloride, carrying out solid-liquid separation, carrying out a double decomposition reaction,filtering, washing, drying, carrying out evaporative crystallization and rectifying. The method is used for comprehensively treating the fluorine-containing olefin production waste, and all componentsin the waste are treated.

The invention provides a method and a device for separating lysozyme from egg white. The method is characterized in that egg white diluent obtained through dilution, pH regulation, homogenization, centrifugal precipitation and the like is used as a raw material, and the separation device formed by coupling membrane filtration and electrodialysis is used for synchronously separating and concentrating the lysozyme in the egg white. The device can comprise a plurality of basic working units, and each basic working unit comprises a feeding chamber and a lysozyme recycling chamber, wherein the feeding chamber is formed by alternately arranging a feeding chamber partition plate, a porous filter membrane, a recycling chamber partition plate and a cation exchange membrane. According to the device formed by coupling membrane filtration and electrodialysis, the process flow of lysozyme separation and extraction is shortened, the consumption of chemical reagents by processes such as a direct crystallization method and a polyelectrolyte precipitation method is avoided, and the secondary pollution caused by the consumption of a large amount of salt solution and acid-base by an ion exchange method and a resin adsorption method is also avoided; the production cost is saved, the environment is protected, and the method is suitable for industrial production.

The invention discloses a preparation method of a lysine acetate bulk drug, which belongs to the technical field of amino acid preparation. The invention abandons the traditional method for dechlorination of ion exchange column, does not need to use solutions such as acid-base, ammonia water, etc., and reduces the pollution to the environment; Compared with traditional ion exchange extraction methods, wastewater generation and acid-base consumption are further eliminated. The product recovery rate of the lysine acetate crude drug obtained by the method of the invention can be as high as 99.8%, the product purity can be as high as 99.7%, and the light transmittance can be as high as 99.8%.

The invention discloses a cycling elution biomimetic peristaltic enzymolysis reactor and a method thereof, comprising a biomimetic peristaltic enzymolysis reactor, a peristaltic driving device (10), an elution device (19), a membrane cycling separation device (12), enzymolysis solution cycling pump (15), a sugar concentration analyzer (20), spiral material feeding / discharging devices (8,9) and a control system. The peristaltic device comprises a peristaltic rod and a peristaltic driving device, and conducts reciprocating motion at the parallel direction of the axial direction of the reactor; the sugar concentration analyzer controls cycling elution of cellulase in the enzymolysis reactor and separation and concentration of the cellulase and the sugar solution in the membrane separation system. The characteristics of the reactor are as follows: through the biomimetic peristaltic role, mass transportation between the solid-phase substrates is improved, and the accessibility of solid-phase substrate is increased; the cycling elution enzymolysis can solve the problem of low loading coefficient, low loading coefficient for traditional reactor, the invention provides high-concentration sugar platform; due to the enzymolysis process without solid flipping mechanical transmission, the reactor with simple structure has low energy consumption, facilitates the industrial scale-up.

The invention discloses a preparation method of a porous Cu surface for heat exchange. The method comprises the following steps: 1) placing a Cu substrate in ethanol for ultrasonic degreasing, then placing into an HCl solution for ultrasonic etching, further washing with deionized water and then naturally air-drying; 2) flatly placing the Cu substrate after natural air-drying on a polytetrafluoroethylene platform, placing into a hydrothermal reaction kettle with a tetrafluoroethylene inner liner, adding anhydrous ethanol into a gap between the hydrothermal reaction kettle and the polytetrafluoroethylene platform and performing steam heat treatment to get a Cu-based porous CuO thin film; and 3) performing reduction heat treatment on the Cu-based porous CuO thin film under a hydrogen atmosphere to get the Cu-based porous Cu surface for heat exchange. The Cu-based porous Cu surface prepared by the preparation method disclosed by the invention has an excellent boiling heat transfer effect; compared with a smooth base, the Cu-based porous Cu surface has the advantage that the boiling heat transfer coefficient at the initial stage of boiling can be increased by 8-12 times.

The invention provides an Ni-Zn-Co metal composite catalyst. The mass ratio of Ni to Zn to Co is (0.228-0.685) to (0.744-1.241) to (0.083-0.248). The invention further provides a preparation method of the Ni-Zn-Co metal composite catalyst. A novel catalyst synthesis method is adopted, and under the condition that synthesis atmosphere and reaction atmosphere are consistent, through optimization combination, solution reaction and calcination in air, the Ni-Zn-Co metal composite catalyst with good dispersibility and a uniform shape is finally prepared after hydrogen reduction in a fixed-bed reactor; the catalyst is used in acetylene selective hydrogenation to obtain a combined composition with a high acetylene conversion rate and high ethylene selectivity, the reaction conditions are mild, and operational and industrial amplification is facilitated.

The invention relates to one-dimensional morphology cobalt-aluminum hydrotalcite and its preparation method and electrochemical application, and belongs to the field of preparation of inorganic nonmetal functional materials. Through solid-liquid ion exchange of a solid cobalt-containing precursor and aluminum-containing and carbonate ion-containing solutions and in-situ crystalline phase transformation, the one-dimensional morphology hydrotalcite-like compound is obtained. The preparation method improves material dispersion uniformity and reduces bulk density. The one-dimensional morphology cobalt-aluminum hydrotalcite is suitable for being used as an electric material in field of energy.