20results about How to "Avoid enrichment" patented technology

The application discloses a preparation method of a high-strength aluminum nitride substrate and relates to the technical field of aluminum nitride substrate preparation. The method comprises the following steps: preparing modified aluminum nitride powder; adding a non-oxygen composite sintering aid composed of fluorides and borides to the modified aluminum nitride powder to obtain a mixture; the adding amount of the composite sintering aid is 0.5wt%-5wt% of the total mass of the modified aluminum nitride powder; the mixture, a binder and a dispersant are mixed in a planetary ball mill to obtain a uniform slurry; the slurry is subjected to flow casting to form a green porcelain embryo, and then, glue removal treatment is performed under the protection of flowing inert gas to remove the binder; the green porcelain embryo after glue removal is placed in an atmosphere sintering furnace to perform a multi-stage temperature rising sintering procedure to form a ceramic body; and the sintered ceramic body is subjected to heat treatment and then cooled to obtain the aluminum nitride substrate. The application reduces the lattice thermal resistance of the aluminum nitride substrate and improves the mechanical strength of the aluminum nitride substrate.

The application discloses a kind of marine carbon fiber warp knits and its preparation method application, carbon fiber reinforced resin composite material, belong to carbon fiber composite material technical field, solve the problem of existing technology in the forming of ship large curved surface workpiece Fabric is easy to shrink, resin infiltration efficiency is low.The marine carbon fiber warp knits includes at least two carbon fiber yarn sheets, the carbon fiber yarn sheet is formed by carbon fiber yarn spread yarn flat cross section;At least two carbon fiber yarn sheets are stacked along the thickness direction, and the lay angle of adjacent carbon fiber yarn sheet constitutes asymmetric lay structure;The carbon fiber yarn sheet is stitched by warp knitting thread, and the stitching density of the warp knitting thread is 8-14 roots / inch.The marine carbon fiber warp knits can realize width variation <5mm, resin rapid and uniform infiltration, improve the forming quality and efficiency of ship large curved surface workpiece.

The invention relates to a bi-crosslinking cyanate ester-epoxy blended adhesive and a preparation method thereof, and relates to the technical field of high polymer materials, the adhesive comprises the following components in parts by weight: 45-85 parts of cyanate ester resin, 5-35 parts of epoxy resin, 0-20 parts of a reactive diluent, 2-6 parts of a bi-crosslinking curing agent and 0-50 parts of a functional filler, the bi-crosslinking curing agent has the following structure: R is alkyl, aliphatic amine or aryl; r'is a primary amino group and / or a secondary amino group, R ''is-C = N and / or-OCN, m is an integer from 1 to 3, and n is an integer from 1 to 2. By adding the double-crosslinking curing agent containing the amino group and the cyano group, the technical problems of high curing temperature, large stress after curing, poor temperature resistance of epoxy resin and the like of the existing cyanate ester resin system are solved, and the curing temperature, the bonding strength and the temperature resistance of the adhesive are balanced. The adhesive can be cured at the temperature lower than 90 DEG C, and has high glass transition temperature, low thermal weight loss and excellent adhesive property.

The novel waste heat recovery device comprises a waste heat recovery structure, a high-temperature section, a medium-temperature section and a low-temperature section are arranged in the waste heat recovery structure, each section is provided with a high-temperature section maintenance door, a medium-temperature section maintenance door and a low-temperature section maintenance door which correspond to each other, and the three maintenance doors are fixed to the side face of the waste heat recovery structure through bolts. A waste residue collecting box is arranged below the filtering section, an exhaust pipe is arranged above the left side of the filtering section and the smoke inlet, and a drainage pipe is arranged below the right side of the waste heat recovery structure. The heat recovery rate can be improved through three-section temperature-dividing gradient heat exchange, three maintenance doors are arranged, all the modules are treated respectively, maintenance is more convenient, a filtering layer can be cleaned at regular time through a filtering section and a waste residue collecting box, and the situation that dust is enriched, and the working efficiency is affected is avoided.

This invention provides a solar-powered soil warming and air-source water self-irrigation device, belonging to the field of solar thermal utilization technology in agricultural facilities. This device can warm the planting soil when there is solar radiation and achieve air-source water self-irrigation when there is no sunlight. The device includes a solar concentrating unit, an evaporation and condensation unit, and a water collection unit. The evaporation and condensation unit includes a conical evaporation tube with evaporating liquid at the bottom. In use, the bottom of the conical evaporation tube is inserted into the planting soil. The solar concentrating unit is located at the head of the conical evaporation tube to reflect and focus sunlight into the tube. The inner surface of the tube is an internal reflective surface to reflect the sunlight into the evaporating liquid surface at the bottom. The water collection unit is located on the outer wall of the conical evaporation tube above the planting soil to collect condensate from the humid air inside the device, allowing the condensate to converge and flow downwards into the planting soil.

The application discloses a kind of high-efficiency continuous separation and purification device and process of crude adipic acid process, belong to chemical separation technical field.The process aims at solving the problems of low efficiency, discontinuity, high moisture content of product, impurities, large wastewater discharge and other problems existing in traditional segmented separation process.The core of this process is to use a set of sedimentation, filtration, washing function in one of the sedimentation filter centrifuge, and the crude adipic acid slurry is continuously and integrally processed, and low-moisture, low-impurity filter cake is directly obtained.Meanwhile, the separated mother liquor and washing water are innovatively introduced into a monobasic acid removal tower in parallel, and after removing impurities such as monobasic acid, the purified liquid is returned to the system for recycling.The application realizes the great simplification of process flow, the continuous automation of production process, the significant improvement of product quality and the internal circulation of resources, and is especially suitable for large-scale industrial application of adipic acid production.

The application discloses a kind of photocatalytic nanocomposite and its preparation method and application, belong to nanocomposite technical field, first synthesis CuInS2 quantum dot powder, a layer of carbon is covered on the surface of CuInS2 quantum dot powder, then amino is introduced by silane coupling agent modification, then modified carbon composite CuInS2 quantum dot powder is loaded on tubular carbon nitride powder formed.The tubular structure of tubular carbon nitride powder is conducive to CuInS2 quantum dot dispersion on its surface or inside, so that the active site of CuInS2 quantum dot powder is fully exposed, the band gap energy of CuInS2 quantum dot powder is about 1.53eV, when being irradiated, electron and hole pair can be generated, can promote the separation of photoinduced electron and hole to improve the activity of catalyst, and the dense carbon layer on CuInS2 quantum dot powder can form physical barrier to prevent peroxide from directly contacting with sulfur ion.

This application relates to the technical field of intelligent airflow control, and in particular to a dynamic optimization method for airflow organization in a clean operating room. Applied to an operating room containing an inner ring main air supply array, an outer ring auxiliary air supply array, and return air louvers, the method includes: when at least a portion of the movement vector points towards the operating table, and the corresponding movement speed is greater than a preset speed threshold and the area shrinkage rate is greater than a preset shrinkage rate threshold, suspending personnel position tracking air supply, marking the low-pressure wake zone, and executing the following: reducing the deflection angle of the guide vanes of the inner ring main air supply array to zero, simultaneously reducing the air supply volume of the outer ring auxiliary air supply array; controlling the outer ring auxiliary air supply array corresponding to the low-pressure wake zone to intercept air supply; increasing the opening of the return air louvers at the wall where each intercepted air supply falls, and decreasing the opening of the return air louvers at other walls. This application proactively abandons tracking through a three-level coordination mechanism, intervening in the flow field phase change conflict caused by transient convergence and dispersion to maintain the cleanliness of the core area.

The invention discloses a preparation method of aluminum-doped small-particle-size cobalt carbonate, belongs to the technical field of lithium ion batteries, and solves the problems that the aluminum element in the existing aluminum-doped small-particle-size cobalt carbonate is easy to recrystallize and separate out, and the particle morphology is difficult to control. The preparation method comprises the following steps: preparing a cobalt-aluminum mixed solution, adding an NH4HCO3 solution into a reaction kettle to serve as a base solution, starting the reaction kettle for heating, adding the cobalt-aluminum solution and the NH4HCO3 solution for precipitation reaction until the particle size D50 of aluminum-doped cobalt carbonate reaches 3.7-3.8 mu m, ending the first reaction and the second reaction until the particle size of the material in the reaction kettle grows to 4.0-4.5 mu m, ending the second reaction, and cooling to room temperature to obtain the cobalt-aluminum composite material. And carrying out a third reaction until the particle size of the aluminum-doped cobalt carbonate grows to 4.0-5.0 [mu] m, washing, and drying to obtain the aluminum-doped small-particle-size cobalt carbonate. The method is convenient to operate and stable in reaction, cooperative control over distribution uniformity and structural integrity of the aluminum element in the aluminum-doped small-particle-size cobalt carbonate particles is ensured, hydrolysis and recrystallization are avoided, and no aluminum segregation substance exists on the surfaces of the aluminum-doped small-particle-size cobalt carbonate particles.

The utility model discloses a sludge wet oxidation waste gas soil filter treatment device which comprises a spray absorption unit, a biological soil filter unit and a waste gas collection and exhaust unit, the spraying absorption unit performs reverse heat and mass transfer on waste gas to be treated and an intermediate medium in a spraying tower, the waste gas subjected to heat exchange enters the biological soil filter tank unit, is subjected to microbial decomposition through a filter tank filler layer and an active soil layer, is collected by a transparent collection cover of the waste gas collection and exhaust unit, and is subjected to high-altitude up-to-standard emission. The waste gas treatment device is low in waste gas treatment cost, simple, stable and reliable; the transparent collecting cover is made of a light-transmitting material, so that photosynthesis of herbaceous plants can be maintained, and strain loss caused by rain wash can be prevented; and the waste gas collection and exhaust unit is used for organized emission, so that enrichment of organic matters in a factory environment is avoided. The device combines spraying and biological soil filter unit treatment processes, achieves up-to-standard emission of waste gas, and guarantees long-term stable operation of the system.

The invention discloses a method for recycling converter steel slag, which comprises the following steps of: mixing high-alkalinity steel slag with multi-source solid waste to react according to different alkalinity of converter hot-state steel slag, so as to obtain phosphorus-free slag, high-chlorine slag and ferrophosphorus slag which are in a solid solution state and are mutually layered; and then the components can be respectively circulated to corresponding working procedures of steel production for absorption. The low-alkalinity steel slag is subjected to cooling, crushing and acid leaching, the obtained iron slag is returned to be sintered for absorption, and the leachate is subjected to micro-electrolysis, oxidation and precipitation treatment and then is respectively recovered to obtain iron phosphate and calcium chloride products, so that zero discharge of wastewater is realized. According to the method, the steel slag is subjected to quality-divided treatment according to different alkalinity of the converter hot steel slag, so that the harmless treatment effect of the steel slag is improved, the discharge amount of the steel slag is greatly reduced, the method is environment-friendly and low in treatment cost, and synergistic efficient treatment of different steel slag, steel mill solid waste and waste acid is realized through a simple and easy-to-operate process; waste gas emission is little, no waste water is discharged, the required raw materials are solid wastes generated in the iron and steel industry, the overall treatment cost is low, and the method is environment-friendly.

The invention discloses an electrolyte purity maintaining assembly applied to a stainless steel cold acid line, purifying equipment and a using method of the purifying equipment, and aims to solve the problem of high power consumption caused by electrolyte impurity accumulation and circulation dead angles. The device comprises an electrolyte purity maintaining assembly and an electrolyte purifying device. The maintaining assembly comprises a storage tank and a circulating structure arranged in the storage tank; the circulating structure is composed of a liquid outlet cylinder, an impeller, a connecting pipe I and a connecting pipe II, the connecting pipe I and the connecting pipe II are distributed up and down, the impeller is driven by a magnetic coupling driving mechanism to rotate, and tank bottom fluid dead corners and electrolytic mud deposition are eliminated through negative pressure suction. According to the purification equipment, a driving motor is matched with an inner / outer gear ring and a gear set to drive an annular liquid pipe to perform circumferential rotation and axial lifting; the fluid boundary layer on the surface of the filter screen is destroyed by utilizing mechanical micro-amplitude vibration generated by a hemispherical block matching structure and a pulse generation structure formed by a closed ring and a communicating pipe so as to peel off viscous impurities.

The invention discloses a steel slag hot-state circulation treatment method, which is characterized in that based on the characteristics of steel slag and steel mill solid waste, a new thought of combining the steel slag with specific solid waste for coordinated treatment so as to realize steel slag dephosphorization and solid waste absorption is provided, and reaction products obtained by the synergistic treatment of the steel slag and the solid waste have different melting points and are easy to separate; accumulation and enrichment of harmful elements in the solid waste are greatly avoided; the low-cost enrichment of phosphorus in the steel slag is realized, the discharge capacity of the steel slag can be greatly reduced, and particularly, the obtained phosphorus-free slag has higher heat and can be circularly used for converter smelting, so that the energy is saved. Compared with an existing reduction gasification dephosphorization technology, the dephosphorization effect is better, the waste gas emission amount is small, no waste water is discharged, in addition, the technology is more concise, the stability is higher, and the input cost is lower.

The invention discloses a resource recycling method and system for ammonia-containing gas, and the method comprises the following steps: firstly, introducing the ammonia-containing gas into a gas-liquid separation pretreatment area at the bottom of a device, and carrying out step-by-step gas-liquid separation and impurity purification through a horizontal spiral channel disc, a wire mesh demister and an iron oxide absorption layer; the purified gas enters an ammonia gas absorption reaction area in the middle and is subjected to countercurrent contact reaction with absorption liquid in a filler layer; the generated ammonium salt recovery liquid is pumped into an ammonium salt crystallization area at the top under the regulation and control of an automatic control system, and an ammonium salt crystal product is finally obtained through evaporation concentration, gradient crystallization and vibration screening; the method is realized by a system integrating three functional areas of gas-liquid separation, ammonia gas absorption and evaporative crystallization. According to the invention, efficient absorption of ammonia components in ammonia-containing gas and resource recovery of ammonium salt products are realized, and the method has the advantages of compact process and high operation automation degree.

This application provides a vacuum carbonate coke oven gas desulfurization absorbent oil removal device, relating to the field of desulfurization absorbent oil removal technology. It includes a gas-liquid separator, an oil removal tank, and a condensate tank. A conveying pipe is installed between the gas-liquid separator and the oil removal tank, and an overflow pipe is installed between the oil removal tank and the condensate tank. An oil drain pipe is installed at the bottom of the oil removal tank, and a first control valve is installed on the oil drain pipe. In use, the acidic gas from the top of the vacuum carbonate desulfurization process regeneration tower is condensed and sent to the gas-liquid separator. The condensate discharged from the gas-liquid separator enters the interior of the oil removal tank through the conveying pipe. Inside the oil removal tank, impurities such as naphthalene and acenaphthene are separated by gravity. The impurities are deposited at the bottom of the tank, and the oily liquid is discharged through the oil drain pipe. The purified condensate overflows through the overflow pipe and is sent back to the condensate tank for recycling, thereby preventing the gradual accumulation of oily impurities in the circulation system.

The invention discloses a diffused neodymium-iron-boron magnet, an alloy, diffusion slurry and application. The alloy consists of the following components in atomic percent: 30-50% of heavy rare earth element HRE, 20-40% of light rare earth element LRE, 5-15% of transition metal element T 'and the balance of low-melting-point metal element M, wherein HRE is selected from one or more of Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y; lRE is selected from one or more of La, Ce, Pr, Nd, Sm and Eu; t'comprises Co; m is selected from one or more of Cu, Al and Ga. The application of the alloy to the diffused neodymium-iron-boron magnet comprises the following steps that the alloy is smashed into alloy powder; mixing the alloy powder with a binder and a solvent to prepare diffusion slurry; a neodymium iron boron magnet is coated with the diffusion slurry; and carrying out diffusion heat treatment on the coated neodymium-iron-boron magnet.

The present application relates to a kind of refrigerant leakage guiding device of heat pump system and indoor unit, including heat exchanger;Pipe joint assembly A, including first refrigerant pipe joint, second refrigerant pipe joint, first water pipe joint and second water pipe joint;Pipe assembly, including first refrigerant pipe, second refrigerant pipe, first water pipe, second water pipe, first sealing pipe and second sealing pipe;First sealing pipe sleeve is set to the outside of first refrigerant pipe and forms first annular passage, the junction of one end of first refrigerant pipe and first refrigerant pipe joint with first annular passage communication, second sealing pipe sleeve is set to the outside of second refrigerant pipe and forms second annular passage, the junction of one end of second refrigerant pipe and second refrigerant pipe joint with second annular passage communication.The present application prevents refrigerant enrichment in the interior of heat pump system.Reduce the probability that flammable refrigerant leaks into the indoor unit of heat pump system and then fire occurs.

The invention discloses a trabectedin-loaded nano-micelle and oxaliplatin-loaded drug combination composition and application, and relates to the technical field of delivery and drug combination, and the trabectedin-loaded nano-micelle and oxaliplatin-loaded drug combination composition comprises trabectedin-loaded nano-micelle and oxaliplatin. The invention also discloses an application of the combined pharmaceutical composition in preparation of antitumor drugs. According to the invention, a pH-sensitive amphiphilic biodegradable material (such as PCL-PEOz) and a chemical drug are self-assembled to form stable micelles, so that the bioavailability of the drug is improved, the critical concentration of the micelles is reduced, and long-acting circulation in vivo is realized; the system can be combined with oxaliplatin for use, so that the sensitivity of tumor cells to oxaliplatin is promoted, the synergistic effect of chemotherapy and immunotherapy is exerted, the treatment effect of malignant tumors is improved, and the tumor microenvironment is improved.

The application provides a laser welding method and device, the laser welding method comprises the following steps: controlling a laser beam to irradiate a preset welding point on a stack, so as to generate a keyhole and a molten pool surrounding the keyhole at the preset welding point; controlling a target moving object to move along a first welding path; after the target moving object moves along the first welding path, controlling the target moving object to start from a first point on a reference circle, travel along the reference circle and swing alternately in a first direction and a second direction in the radial direction of the reference circle; when the target moving object reaches a second point on the reference circle, recording the moving track of the target moving object between the first point and the second point as a second welding path. The application improves the metal fusion, and improves the welding strength and welding stability.