3583results about How to "Reduce adsorption" patented technology

Methods and apparatus for reducing adsorption in microscale devices are provided. In the methods and apparatus, an electrical current such as an alternating current is applied to materials under pressure-induced flow. Integrated systems for simultaneous control of current and pressure in a channel are also provided.

Provided is a method for joint-mining of coalbed gas and coal. The method comprises: a well-drilling step; a fracturing and penetration step; a coalbed gas extraction step: an ignition step, and an underground gasification step. The method combines an underground coal gasification technology and a coalbed gas extraction technology, not only allows for utilization of the high temperature of underground gasification to heat a coalbed. thus increasing the permeability of a coal seam. and increasing the recovery rate of the coalbed gas, but also allows for utilization of the coalbed gas to perform the drilling and the fracturing and penetration processes, thus increasing the efficiency of underground coal gasification for mining.

The invention discloses organosilicon synthetic leather adopting a three-layer structure and a preparation method thereof. The organosilicon synthetic leather is bonded by a base material, bottom layer glue and surface layer glue in sequence. According to the organosilicon synthetic leather adopting the three-layer structure, through the reasonable design of the chemical composition of the bottom layer glue and the surface layer glue, the bottom layer glue provides a firm interlamination bonding function for the two connecting surfaces under the combined action of various chemical reactions, and is endowed with the characteristics of softness and smoothness of the organosilicon synthetic leather, the surface layer glue is endowed with the characteristics of being dry, comfortable and wearable of the organosilicon synthetic leather, so that the organosilicon synthetic leather has the characteristics that dust adsorption is reduced, and the wear resistance, the scrape resistance and the scratch resistance are improved.

The invention disclose a micro-emulsification type stainless steel cutting fluid belonging to metal-cutting lubricant technical field to solve the problems that the existing cutting fluid can not be commendably used in cutting process of stainless steel and can endanger the health of the workers. The micro-emulsification type stainless steel cutting fluid comprises 20-40 wt% water, 5-20 wt% paraffin base mineral oil or naphthenic base mineral oil, 1-15 wt% non-ionic surfactant of alkyl phenol polyoxyethylene ether or fatty alcohol polyoxyethylene ether, 5-10 wt% chloroparaffin, 1-10 wt% petroleum sodium sulphonate and hardship or alkenyl succinic acid rust preventive, 5-25 wt% mixing alkyol amine of mono ethanolamine and trieanolamine, 5-15 wt% oleic acid, 2-10 wt% polyatomic alcohol lauric acid ester or polyatomic alcohol oleic acid ester, 0.1-0.5 wt%.benzotriazole, and 0.1-0.5 wt% methyl silicone oil anti-foam agent. The micro-emulsification type stainless steel cutting fluid is specially used in the cutting process of the stainless steel.

The invention relates to a nano carbon doped electrocatalyst for a fuel cell, and application of the nano carbon doped electrocatalyst. The electrocatalyst is prepared by adopting the steps of: complexing a nitrogen-containing and / or boron-containing organic precursor and a transition metal salt to form a composite; adding nano carbon as a carrier, and heating and reacting a mixture by adopting a microwave radiation method; and after the reaction is complete, filtering and drying, placing a product obtained after the reaction in an inert atmosphere and / or reducing atmosphere, and treating at a high temperature of 500-1500 DEG C to obtain the nano carbon doped electrocatalyst. The nano carbon doped electrocatalyst is very low in cost, high in activity and stability and excellent in anti-poisoning capacity.

A separation device for detaching and stacking stamped sheet metal comprises a driving mechanism, a pushing mechanism, a lifting mechanism, a separating mechanism and a sheet metal supporting base. The sheet metal supporting base is used for supporting the other mechanisms and stacking the sheet metal. The pushing mechanism allows a pushing assembly to slide linearly in the horizontal guide direction of a guide support through a vertical slide rod connected with a cylinder so that the effect of pushing out the sheet metal on the top layer can be achieved. The lifting mechanism controls the guide support to rise and fall by adjusting the number of rotation circles of a screw so that a push block can always keep aligned with the sheet metal on the top layer when starting to work. The separating mechanism is connected to the lifting mechanism when a steel wire rope is wound around a pulley so that the separating mechanism can synchronously rise and fall together with the lifting mechanism under the influences of the gravity of the separating mechanism. A separating rod can prevent the sheet metal on the top layer from absorbing the sheet metal on the lower layer and sliding together with the sheet metal on the top layer, and a separating inclined block makes a gap formed between the sheet metal on the top layer and a sheet metal stack. The intermittent movement of the pushing mechanism and the lifting mechanism is achieved through double ratchets by means of the driving device. The separation device is easy to operate, high in efficiency, good in separation effect, high in flexibility and wide in applicability.

The invention relates to a method for preparing an epoxide and mainly resolves the problems in the prior art such as the low activity of catalysts for production of the epoxide, poor effect of mass transference, and high cost of production. The invention well resolves the problems through adopting the technical proposal which selects cheap organic amine as a template with shorter crystallization time, carries titanium through posterior synthesis in the presence of inertia gas, grafts inorganic titanium to silicon dioxide framework with a hexagonal mesoporous structure to form a substance of active titanium with four coordinating structure, and carries out alkylation treatment to produce a catalyst of the epoxide. The method provided by the invention can be applied to the industrialized production of the epoxide.

The invention discloses a mud-proof slump-retaining type polycarboxylate superplasticizer with low shrinkage and high adaptability and a low-temperature preparation method thereof. The polycarboxylatesuperplasticizer is mainly prepared by the following steps: carrying out free radical polymerization on 4-hydroxybutylvinyl polyoxyethylene ether, unsaturated carboxylic acid, an unsaturated amide-type monomer, dipolyethylene glycol maleate, an unsaturated quaternary ammonium cationic monomer, an oxidizing agent, a catalyst, a reducing agent, a chain transfer agent and deionized water at 5-15 DEGC through an aqueous solution, regulating pH value by adding a sodium hydroxide solution, and supplementing water. The preparation method of the invention has advantages of low-temperature production, no heat source, simple equipment, no pollution, short reaction time and high production efficiency. The prepared mud-proof slump-retaining type polycarboxylate superplasticizer endows concrete withgood workability, good adaptability, low shrinkage and high strength, has excellent mud-proof slump-retaining property, and greatly reduces construction difficulty.

The invention relates to a method for preparing alcohols by selectively hydrogenating aldehydes, belonging to hydrogenation technologies. In order to meet the requirements of people on two aspects, i.e. the improving of the selectivity on preparing the alcohols by hydrogenating the aldehydes and the prolonging of the service life of a catalyst currently, the method proposes that: the aldehydes are taken as raw materials; the reaction temperature is 20-300 DEG C; the reaction pressure is 0.1-7.0 MPa; the weight space velocity of the aldehydes is 0.02-20 h<-1>; the aldehydes and hydrogen gas are in contact with a hydrogenation catalyst; and the aldehydes are produced into corresponding alcohols through selectively hydrogenating. In the method, the hydrogenation catalyst comprises a carrier, a metal active component and silane groups; the silane groups are grafted through a silylanizing treatment; and the content of the silane groups in the total weight of the catalyst is 0.05 wt% to 25 wt%. Compared with the existing method, with the adoption of the catalyst in the method provided by the invention, the selectivity is high, the amount of byproducts, such as ethers, esters and acetals is greatly lowered; and meanwhile, the generation amount of carbon deposit is little, so that the catalyst has longer service life.

The present invention provides a device and methods of use thereof for desalting a solution. The methods, inter-alia, make use of a device comprising microchannels, which are linked to conduits, whereby induction of an electric field in the conduit results in the formation of a space charge layer within the microchannel. The space charge layer provides an energy barrier for salt ions and generates an ion depletion zone proximal to the linkage region between the microchannel and the conduit. The method thus enables the removal of salt ions from the region proximal to the conduit and their accumulation in a region distant from the conduit, within the microchannel.

A plastic container for liquid medicine, which, concerning the effective components of liquid medicine, is capable of prevention of deterioration in quality due to mixing of oxygen and water vapor, prevention of variation in concentration due to water volatilization and moisture absorption, etc. A plastic container for liquid medicine, which is a plastic container internally coated with DLC (diamond-like carbon) film wherein water vapor permeability is 0-0.006 g / container / day and oxygen permeability is 0-0.011 ml / container / day, such properties being obtained by optimizing the three conditions, composition, density and film thickness of the DLC film.

The invention relates to the field of high-throughput screening and particularly relates to an automatic micro-droplet array screening system using method with pico-liter-scale precision. The using method provided by the invention comprises the following steps of: firstly, using liquid with a low thermal expansion coefficient and filled in a liquid driving system and a capillary tube as carrier liquid, and entirely emptying bubbles inside the capillary tube; secondly, soaking a sampling end of the capillary tube in an oil phase sample immiscible with a water phase sample, extracting a section of oil phase sample into the capillary tube, so as to isolate the water phase sample and the carrier liquid; thirdly, soaking the sampling end of the capillary tube into a sample / reagent storage tube and extracting a certain volume of the water phase sample solution into the capillary tube; and finally, moving the sampling end of the capillary tube into the oil phase sample above micro-pores of a micro-porous array chip, and pushing the sample solution in the capillary tube into the micro-pores, so as to form sample droplets. With the adoption of the using method provided by the invention, the liquid is quantitatively measured, and the generated droplets have the pico-liter-scale volume precision, so that the consumption of the samples / reagents in the high-throughput screening can be effectively reduced, and the experiment cost can be saved.

The invention discloses a preparation method of a high-performance lithium adsorbent. The method comprises the following steps of: (1) adding 100-500 ml of deionized water to a three-neck flask of 1L and adjusting a pH value to be 3-7; (2) adding 25-150g of organic aluminum to the flask at 40-70 DEG C and hydrolyzing to obtain active aluminum hydroxide, gradually dipping a lithium salt solution or a lithium salt solid three times of the organic aluminum 0.5h after hydrolyzation and reacting for 1-2h to obtain an active substance product of LiCl.2Al(OH)3.xH2O; (3) filtering the active substance containing the aluminum hydroxide and washing with 95 percent of ethanol twice to obtain solid precipitate and filtrate; and (4) drying the solid precipitate at 30-70 DEG C. The prepared active substance of aluminum hydroxide radically solves the problem of uneven reaction of a traditional method for preparing the active substance of aluminum hydroxide by utilizing solid-phase mixing, and the invention has the advantages of high absorption speed, greater specific surface area and longer adsorbent service life.

The invention discloses a mud-resistant polycarboxylic acid water-reducing agent and a preparation method thereof. The mud-resistant polycarboxylic acid water-reducing agent disclosed by the invention is prepared by copolymerizing an unsaturated polyalkylene dialcohol ether monomer a, an unsaturated carboxylic acid monomer b, unsaturated acid hydroxyalkyl ester c and an ammonium salt cationic unsaturated monomer d through free radicals under the action of an initiator and a chain transfer agent; and the mol ratio of the monomer a to the monomer b to the monomer c to the monomer d is 1.0:(2.0-4.2):(0.2-1.0):(0.1-0.5). Under the condition that aggregates contain mud, the dispersion effect of the mud-resistant polycarboxylic acid water-reducing agent disclosed by the invention is obviously prior to that of the traditional water-reducing agent; and the mud-resistant polycarboxylic acid water-reducing agent not only has low amount of admixture but also has better keeping property.

The invention relates to cationic surface active agent modified sagging bar earth manufacturing method. It belongs to high-tech content, high addition value sagging bar earth new product exploitation utilization. It includes the following steps: using sagging bar earth as material to do acid treatment; ion exchanging with sodium ion; and using ultrasonic wave to promote cation exchange. The method can greatly increase modified speed and interaction with organic. The modified sagging bar earth phenol adsorbability can rise by 18 times.

The invention relates to a nitrogen-doped nano carbon electrocatalyst for a fuel cell, and preparation and application of the nitrogen-doped nano carbon electrocatalyst. The electrocatalyst is prepared by adopting the steps of: with phenylamine as a reaction precursor, mixing the phenylamine, a surfactant and a soluble transition metal salt and then polymerizing under acidic and high-oxidization conditions, carrying out high-temperature carbonization on the polymer under the protection of an inert gas and / or ammonia atmosphere after drying, and finally carrying out acid treatment. The preparation method of the electrocatalyst is simply and easily controlled, and the mass production is easily realized. The nitrogen-doped nano carbon electrocatalyst has better oxygen reduction catalytic activity, stability and selectivity in an acidic medium fuel cell compared with Pt / C, and has higher catalytic activity and stability in an alkaline medium fuel cell compared with commercialized Pt / C. In addition, the nitrogen-doped nano carbon electrocatalyst also has the advantages of low cost and high anti-poisoning property, and is capable of replacing platinum to be used as a fuel cell oxygen reduction electrocatalyst.

The invention discloses a method of atmospheric dielectric barrier discharge plasma to carry out polymer microporous membrane hydrophilic modification. The method comprises the following steps: (1) the polymer microporous membrane is cleaned clearly, dried and then arranged into the solution of an organic monomer for dipping; after the surface of the microporous membrane absorbs the organic monomer, the microporous membrane is taken out and aired; (2) the polymer microporous membrane treated by the step (1) is arranged between the two discharge electrodes of the dielectric barrier discharge to carry out atmospheric dielectric barrier discharge plasma treatment; (3) the polymer microporous membrane treated by step (2) is cleaned and then dried. The method has the characteristics of simple technique, convenient operation, quick processing speed, good and durable processing effect, low cost, being not easy to cause environment pollution, energy saving, and the like.

The invention discloses a method and device for cleaning space debris. According to the method, electromagnetic force is applied to the space debris running on an original orbit; the speed and / or direction of the space debris are / is changed under the action of the electromagnetic force; the space debris of which the speed is changed is changed to run on a new orbit under the action of gravity; at least the height of the perigee of the space debris on the new orbit is smaller than the height of the perigee of the space debris on the original orbit; the space debris running on the new orbit finally falls into the atmosphere of the earth under the action of atmosphere resistance. The device comprises a satellite bearing platform which is provided with an electric field device cleaning the space debris or a magnetic field device cleaning the space debris or a combination of the electric field device and the magnetic field device. The method and device for cleaning the space debris do not have high requirements for the accuracy of position detection of the space debris, micro space debris can be effectively cleaned, solar energy can be fully utilized for power generation, and self-carried energy is saved. The device for cleaning the space debris has the advantages of being simple in structure, low in manufacturing cost, and better in pulse action effect.

A magnetic nanoparticle suitable for imaging a geological structure having one or more magnetic metal or metal oxide nanoparticles with a polymer grafted to the surface to form a magnetic nanoparticle, wherein the magnetic nanoparticle displays a colloidal stability under harsh salinity conditions or in a standard API brine.

The invention relates to a gas sensor test system for dynamic and static gas distribution dual purposes, and belongs to the technical field of gas sensor test. The system comprises: a test cavity, wherein the main body of the test cavity is a stainless steel cavity; sealed cabin ports, wherein the quantity of the sealed cabin ports is 2, the sealed cabin ports are respectively arranged at two ends of the test cavity, and every sealed cabin port is matched with a sealed cabin door; a gas inlet pipeline arranged on one of the sealed cabin ports; a gas outlet pipeline arranged on the other one of the sealed cabin ports; a humiture sensor arranged in the test cavity; a liquid injection window arranged on the sealed cabin door provided with the gas outlet pipeline and used for injecting a liquid to the test cavity; and a heating platform arranged in the test cavity, wherein the liquid injection window cooperates with the heating platform to heat the injected liquid in order to vaporize the liquid. The system can realize simulation of dynamic gas environment and static gas environment, and also can realize performance calibration and test of a gas sensor in different gas environments.

The invention discloses a method for preparing a nanometer photocatalyst material supported embedded composite film. The method comprises the following steps: dissolving an organic polymer base film material, a pore-forming agent and a nanometer catalyst in a solvent, stirring and standing to prepare a casting film solution; dispersing the nanometer photocatalyst in the solvent to obtain dispersion liquid, spreading the dispersion liquid on a plate to prepare a spreading solution, and drying the spreading solution to obtain a spreading film; and covering the spreading film with the casting film solution, scraping a liquid film by utilizing a film scraper, immersing the scraped liquid film in a constant temperature gel bath, and curing the liquid film to prepare the nanometer photocatalyst material supported embedded composite film. The invention also provides the nanometer photocatalyst material supported embedded composite film and application thereof. According to the method, a nanometer photocatalyst coating is uniformly, effectively, stably and firmly supported on the surface of the embedded composite film. Moreover, according to the composite film, the removal rate of pollutants is effectively improved, and film pollution is reduced.

The invention relates to synthesis of polyoxyethylene fatty alcohol ether sulphonate, and complex formulation for tertiary oil recovery displacement agent, and belongs to chemical displacement agent technic field. The invention discloses a synthesis method of a surface active agent for tertiary oil recovery for a high-temperature, high salinity and high calcium and magnesium ion oil reservoir, and complex formulation for highly effective displacement agents. Polyoxyethylene fatty alcohol ether sulphate is reacted with a sulfonating agent under the action of catalyst to produce polyoxyethylene fatty alcohol ether sulphonate. Polyoxyethylene fatty alcohol ether sulphonate are used as main material which is complex formulated with heavy alkyl benzene sulfonate, water, polymerisate, etc. Compared with existing products, the displacement agent of the invention in the three-high system reduces the oil-water boundary tension ultra-low (10<-3>mN / m), and the boundary tension is not affected by temperature, degree of mineralization and the concentration of calcium and magnesium ions.

The disclosure is directed to polyelectrolyte complex nanoparticles that can be used to deliver agents deep into hydrocarbon reservoirs. Methods of making and using said polyelectrolyte complex nanoparticles are also provided.

The invention relates to a method for manufacturing a digital PCR (polymerase chain reaction) chip based on a mineral-oil saturated PDMS (polydimethylsiloxane) material. The method is characterized in that the digital PCR chip based on PDMS is prepared from a PDMS monomer of a certain amount of mineral oil (liquid paraffin) and comprises an emulsion droplet generation structure and an emulsion droplet collection structure. After the emulsion droplets are made and collected on the same chip, the emulsion droplets are subjected to PCR amplification on the same chip. The phagocytosis to the oil phase in the digital PCR system by the PDMS of the chip can be avoided, the emulsion droplets can be kept stable during PCR, and the stability of the PCR can be guaranteed. In addition, compared with the existing technology of the digital PCR chip, the method provided by the invention is low in cost, is convenient to operate and has a very wide application prospect.

The invention discloses a carbon folded non-woven filter materials and its manufacturing technology, the filter materials comprising of the upper,middle,low non-woven layers and active carbon placed in the middle of non-woven network, its manufacturing processes are : (1) low non-woven volumes, the first hot melt gum membrane or hot melt gum network or low melting point non-woven volumes the middle layer non-woven network volumes, or compound non-woven fabrics (network non-woven face up) volumes, (2) spreading active carbon (3) the second hot melt gum membrane or hot melt gum network or low melting point non-woven volumes ,upper layer non-woven volumes (4) ultrasonic compounded or hot pressing compounded, (5) rolling. The active carbon grain are fixed between upper-low non-woven through the middle layer non-woven network, its active carbon is not directly contact or hardly contact with the adhesive, it guarantees the active carbon and its composite materials perform at the maximal limitation. The manufacturing process is simple, efficient, of low production cost, it also save energy and protect the environment.

The invention discloses a method for treating sulfur-bearing niffy waste gas emitted from a storage tank, which includes the following process: the waste gas is firstly decarbolized and then sequentially passes through a noncombustible adsorbent bed layer and a flammable adsorbent bed layer; the noncombustible adsorbent includes silica gel, molecular sieve or alumina, the flammable adsorbent includes activated carbon or activated carbon fibers, the volume ratio of noncombustible adsorbent to flammable adsorbent is 20:80 to 80:20. By adopting the method of the invention, the concentration of the niffy gas emitted from the storage tank can meet the relevant national standards, and the hydrocarbon concentration of waste gas also can meet the relevant national standards; furthermore, the treatment process is simple and has no potential safety hazard. The method of the invention is mainly applied to the places where sulphid and hydrocarbon waste gas can be generated, for instance, an oil tank, an oily sewage tank, a device which can generate sulfur-bearing hydrocarbon waste gas in hydrocarbon processing course, etc.

The invention relates to long-carbon-chain amide glycine betaine clean fracturing fluid and a preparation method thereof. The glycine betaine amphiprotic surface active agent long-carbon-chain (more than 18 carbons) amide glycine betaine is used as a main agent, the carbon chain of the glycine betaine is long, the glycine betaine is dissolved in the water and is likely to form gel after being stirred, so that the fracturing fluid is good in viscosity. In addition, the clean fracturing fluid by adopting the long-carbon-chain (more than 18) amide glycine betaine as the main agent adsorbs less rock stratum, the consumption of the surface active agent is effectively reduced, the calcium resistance is strong, the gel is thorough to break, no residue exists, and the harm on the stratum is small. The prepared long-carbon-chain amide propyl glycine betaine clean fracturing fluid can be well applied to an oil field and plays an important role in increasing the yield of the oil-gas field.

The invention relates to a composite type mercury ion adsorbent and a preparation method thereof. The adsorbent consists of chitosan, polyvinyl alcohol and clay. A polyvinyl alcohol macromolecular chain and a chitosan macromolecular chain are penetrated and wound mutually by high-speed stirring, so that the inorganic clay is dispersed fully; and the release of the chitosan and the polyvinyl alcohol in the process of using the adsorbent is avoided effectively by a method of combining cross linking agent cross linking and freezing crossing linking of glutaraldehyde. The adsorbent has high adsorption capacity and high adsorptive selectivity on Hg(II) ions, hardly adsorbs Cd(II) and Pb(II) ions, and adsorbs a small amount of Cu(II) ions, and can be recycled, and adsorbability of the adsorbentis slightly influenced by the pH value of a solution. The integral preparation process is performed in an aqueous solution, the preparation method is simple and convenient, low in energy consumption,low in production cost, environment-friendly, and easy to industrialize, and special process equipment is avoided.