37 results about "Porous system" patented technology

The multi-aperture system of the present invention provides a retinal oximetry apparatus for determining the level of oxygen saturation in retinal vessels using a lenslet array comprising at least seven lenses for the simultaneous measurement of reflected light with at least three wavelengths and at least four polarization states. The multi-aperture system of the present invention further provides an apparatus for determining the level of oxygen saturation in retinal vessels using a lenslet array comprising at least ten lenses for the simultaneous measurement of reflected light with at least three wavelengths for oxygen measurement, at least three wavelengths for melanin content, and at least four polarization states. Methods of operating the same are also provided.

The invention discloses a process method of a finish machining large-scale diesel engine cylinder body porous system. The process method comprises: machining two or more than two holes inside a porous system on a cylinder body by adopting self guidance of a workpiece; installing a guide sleeve on the two machined holes inside the porous system on the cylinder body as guidance; installing a float boring bar inside the guide sleeve; installing a precision boring unit and a boring cutter on the float boring bar corresponding to a to-be-machined hole; and connecting the float boring bar with a main shaft to carry out precision machining on a large-scale diesel engine cylinder body porous system hole on a horizontal boring and milling machine or a horizontal machining center. The process method makes use of a machined hole of the workpiece for guidance so as to carry out machining on the porous system with large aperture, long distance and higher requirements on size, form and position precision and surface roughness concentration; moreover, the method has high machining precision and lower process cost and can meet the requirements of high-precision process. The process method does not require special machine tool and special frock and has simple and safe operation and quick production; therefore, the method is suitable for popularization and application in the engine industry.

The present invention refers to a biotechnological process that enhances oil recovery of a 14 to 25 API Gravity oil contained in carbonate-containing and/or clayey sandstone porous rock systems with low permeability (7 to 100 mD), thus focused to petroleum wells associated to zones with low recovery factor. The process utilizes the indigenous extremophile microorganisms activity from the oil reservoir and an IMP culture, as well as its metabolites (gases, acids, solvents and surfactants), which improve oil mobility and are able to develop at 60 to 95° C. temperatures, 7 to 154.6 Kg/cm² (100 to 2,200 psi) pressures and NaCl content from 5,000 to 45,000 ppm, in anaerobic conditions. The biotechnological process of the present invention includes: indigenous microorganisms sampling, collecting and characterization from the reservoir; formulation of culture media; selection, enrichment, activation and preservation of such microorganisms, as well as biostimulation (indigenous microorganisms) and bioaugmentation (IMP culture) to increase the metabolite production, useful for oil recovery in a porous media impregnated with oil in carbonate-containing and/or clayey sandstone porous systems, with one or several cycles and confinement periods from 5 to 10 days, to increase oil recovery. Experimental tests show that the biotechnological process of the present invention supplies an oil recovery increase up to 30%, additional to that obtained in secondary recovery processes.

The invention relates to an in-situ supported forming preparation method of titanium silicon molecular sieve composite catalyst. The method comprises the steps: (1) introducing a porous system into a TS-1 hydrothermal synthesis system of an MFI topological structure consisting of a silicon source, a titanium source, a template agent, a complexing agent and an alkali source; (2) separating out crystal nucleus from TS-1 on the surface and in pores of the porous material after aging, and loading the crystal nucleus onto the porous material in an in-situ growth manner to obtain an intermediate product 1; (3) crystallizing the intermediate product 1 to obtain a mixture of TS-1 composite catalyst, and separating and drying the mixture to obtain an intermediate product 2; and (4) roasting the intermediate product 2 in a N2 atmosphere to obtain the TS-1 composite catalyst. According to the prepared TS-1 composite catalyst, TS-1 is firmly combined with the porous material, the mechanical strength is high, and the abrasion resistance is good; the TS-1 is in-situ formed in a porous material carrier, so that the specific surface area is increased, and the catalytic efficiency is improved; the process is simple, and the production cost is low; the catalyst is large in particle size and easy to separate, and the service life is prolonged.

The invention relates to a method for jointly removing SOx, NOx and other pollutants aiming at the waste heat recovery of flue gas in a coke oven, which is used for removing harmful substances SOx and/or NOx, HCl (Hydrogen Chloride), HF (Hydrogen Fluoride), mercury and the like in the flue gas. Therefore, the method comprises the following steps: carrying out heat exchange between the combustion flue gas and a cold medium through a heat exchanger, fully mixing with NH3 and flowing through a pollutant adsorption device on which an adsorbent material layer is arranged from bottom to top. The SOx and/or the NOx, the HCl, the HF and the mercury in the flue gas are adsorbed in an adsorbent porous system, and clean flue gas is discharged from the upper part of the adsorption device. A fresh adsorbent is supplemented from the top part of the adsorption device into the adsorption device, an adsorbent of which the adsorption is saturated is discharged out of the adsorption device from the bottom part of the adsorption device, and the saturated adsorbent is returned to the adsorption device for reuse after being analyzed and regenerated.

Provided are methods, systems, and computer-readable media for determining capillary pressure in a basin/reservoir. Well log data is obtained that includes permeability log data, porosity log data, water saturation log data, and oil saturation log data. Thomeer parameters for a multi-pore system of a Thomeer model are determined by evaluating an objective function that measures the mismatch between the well log data and modeled data having the Thomeer parameters as input. The objective function is iteratively evaluated using linear equality constraints, linear inequality constraints, and nonlinear equality constraints until convergence criteria are met.

A method of fabricating porous carbon foam includes mixing equal masses of SiO₂ particle dispersion with a chitosan solution, dropwise adding a glutaraldehyde aqueous solution into the mixture and solidifying it in air forming a room temperature hydrogel, lyophilizing the hydrogel to form a sponge-like SiO₂-embedded aerogel, carbonizing in a furnace the aerogel to form a SiO₂-embedded carbon foam, soaking the embedded carbon foam in NaOH to dissolve the SiO₂ particles to form a carbon foam having carbon sheets with sub-micron cavities, immersing the carbon sheets in de-ionized water to remove any NaOH residuals followed by drying, placing the carbon foam in KOH solution followed by drying, annealing in nitrogen atmosphere the dried carbon foam to synthesize a carbon foam with a multi-dimensional porous system, immersing the synthesized carbon foam in de-ionized water to prevent self-burning in air, and rinsing the carbon foam in HCl and water, then oven drying.

A novel single-well geothermal and solar combined heating system comprises a single-well heat exchange system, a solar heat collection system, a heat pump system, heating consumers, a first water tank, a second water tank, a first circulation pump, a second circulation pump, a third circulation pump, a fourth circulation pump, a fifth circulation pump, a first valve, a second valve, a third valve,a fourth valve, a fifth valve and a sixth valve. The novel single-well geothermal and solar combined heating system has the advantages that the stability during solar heating is improved through thegeothermal heat accumulation capacity and variable load strain capacity, meanwhile, solar energy is stored underground in the non-heating season, and underground heat losses during winter heating is effectively compensated; in the non-heating season, through natural convection of water in a porous system, heat of injected water is effectively transmitted to the position away from a well wall, heatexchange of rocks outside a well is improved, and the single-well geothermal heat accumulation capacity is greatly improved; and in the heating season, through natural convection of water in the porous system, heat of the distant rocks is rapidly transmitted into the metallic well, and the single-well heat collection amount is increased.

The invention discloses a preparation method of antibacterial active carbon, which belongs to the technical field of water treatment preparation. Rice husks are subjected to hydrolytic degradation under the action of a compound activator of zinc chloride and copper chloride so as to form a low polymer and be dewatered through reaction, so that an intermediate product can be promoted to be condensed to form a graphite-like microcrystalline structure and produce a porous system; under an acidic condition, a large number of residues of zinc and copper ions in high concentration form a complex in an aromatization organic matter so as to be adsorbed in micropores of the graphite-like microcrystalline structure, and the copper and zinc ions can remarkably inhibit amination of bacteria on nitrite, so that the breeding of the bacteria is reduced, and the aim of an antibacterial effect is achieved. Apurple perilla extract mainly contains perillaldehyde which is a powerful antibacterial substance and has a certain damage effect on formation of a bacterial cell wall, and after activated carbon is soaked in an acetone solution of the purple perilla extract, the purple perilla extract is distributed in activated carbon pores so as to achieve an inhibition effect on surrounding bacteria breeding, so that the aim of the antibacterial effect is achieved.

The invention relates to a comprehensive treatment method and device for removing SOx, NOx and other pollutants from coke oven flue gas. Harmful substances such as SOx and/or NOx, HCl, HF, mercury and the like in flue gas are removed basically. The method comprises the following steps of: fully mixing combustion flue gas with NH3, and making the mixed gas flow through a pollutant adsorption device provided with an adsorbent material layer from bottom to top; adsorbing SOx and/or NOx, HCl, HF and mercury in the flue gas into a porous system of an adsorbent, and exhausting clean flue gas from the upper part of the adsorption device; and replenishing a fresh adsorbent into the adsorption device from the top of the adsorption device, exhausting the adsorption-saturated adsorbent out of the adsorption device from the bottom of the adsorption device, resolving and regenerating the saturated adsorbent, and returning into the adsorption device for recycling.

The invention discloses a ballastless track freezing and damage behavior calculation method which comprises the following steps: S1, acquiring a porous framework volume compression modulus of a pouredconcrete test piece according to a dynamic elastic wave test, and calculating to obtain a Biot coefficient; S2, acquiring pore structure distribution parameters and overall porosity of concrete testpieces according to CT scanning and image recognition technologies; S3, according to pore structure distribution parameters, acquiring temperature-freezing rate relation curve in freezing process of concrete test pieces through calculation; S4, according to a Young-Laplace equation ice-unfrozen water balance and ice-adsorbed water film balance relationship, constructing a function relationship among the average pore pressure, the temperature and the pore structure; and S5, Based on porous medium mechanics, Darcy's law of water migration in a porous medium and Friour's law of heat conduction ofa porous system, constructing a coupling control equation of a porous medium stress field, a temperature field and a seepage field to obtain an interaction relationship among structural stress, heattransfer and water migration in the ballastless track in the freeze-thaw process.

The invention describes an antibiotic coating for porous bodies and its use. Into the porous system of non-metallic porous bodies and of metallic porous bodies, a coating made of at least one antibiotic salt that is hardly soluble in water or in an aqueous environment from the group of the netilmicin laurate, the netilmicin myristate, the netilmicin dodecyl sulfate, the sisomicin laurate, the sisomicin myristate, the sisomicin dodecyl sulfate, the gentamicin laurate, the gentamicin myristate, the clindamycin laurate, the amikacin laurate, the amikacin myristate, the amikacin dodecyl sulfate, the kanamycin laurate, the kanamycin myristate, the kanamycin dodecyl sulfate, the tobramycin laurate, the tobramycin myristate, the tobramycin dodecyl sulfate, the ciprofloxacin myristate, the vancomycin dodecyl sulfate, the vancomycin laurate, the vancomycin myristate, the vancomycin teicoplanin and the clindamycin teicoplanin is introduced. The antibiotically coated, porous bodies are used as implants.

The invention provides a method for preparing a wormlike mesoporous Al2O3/molecular sieve composite material. The whole method generally comprises the following two steps: 1) preparing a nano-grade molecular sieve; 2) performing in-situ compounding of the molecular sieve with a mesoporous aluminum oxide material. By adjusting hydrolysis of an aluminum source, the aluminum source is slowly hydrolyzed to form the wormlike mesoporous aluminum oxide material which is very well compounded with a molecular sieve, and at the same time a multi-stage porous system of a structure of mesopores (provided by aluminum oxide) and micropores (provided by the molecular sieve) as well is formed. The method provided by the invention is simple and feasible, easy in condition regulation and control and easy in large-scale production and has the potential of being applied to industrial fields such as molecule adsorption and catalysis.

The invention provides a preparation method of an iron disulfide doped Mo2S3 porous system. The preparation method comprises the following steps: 1) preparing iron disulfide doped Mo2S3 powder; and 2)preparing the iron disulfide doped Mo2S3 porous system. The invention further provides a porous solar evaporation system based on iron disulfide doped Mo2S3. As a light acquisition and photothermal conversion material, the system has dual characteristics of high absorptivity and water supply, and under simulated sunlight irradiation of 1kW m <-2 >, the evaporation rate can reach 2.4 kg m <-2 > h<-1 > at most, which is higher than that of all currently reported molybdenum disulfide-based evaporation systems. Meanwhile, the iron disulfide doped Mo2S3 porous system prepared by the invention canbe stably used for purification treatment of seawater and sewage containing organic matters and heavy metal ions.

The invention discloses a geothermal single-well reinforced heat exchange system. The system comprises an artificial porous system arranged in the middle of an underground compact rock layer, a heat-taking heating assembly arranged on the ground surface and an underground heat-collecting assembly arranged underground; the underground heat-collecting assembly comprises a geothermal well penetratingthrough the compact rock layer and the artificial porous system which are arranged underground, and a heat preservation pipe arranged in the middle of the geothermal well; and a metal well wall is adopted for the geothermal well, a water outlet channel is formed in the heat preservation pipe, an annular space between the heat preservation pipe and the metal well wall forms a water inlet channel,the heat preservation pipe is in communication with a well mouth and a well bottom of the geothermal well, and an upper screen pipe and a lower screen pipe are arranged at the part, at the artificialporous system, of the metal well wall. According to the geothermal single-well reinforced heat exchange system, through the reinforced heat exchange of the artificial porous system, the output power of the geothermal single well can be greatly improved, so that the situation that dry holes cannot be used without water is avoided, the utilization rate of punching is effectively improved, and the investment risk of enterprises is reduced.

The invention discloses a preparation method of activated coke for flue gas desulfurization, and belongs to the technical field of adsorbents. An electroless copper plating solution can generate reducing gases carbon monoxide and hydrogen under a heating condition, and the slowly released reducing gases make copper ions oxidized and precipitating on the surface of iron powder, so the activated coke does not react with sulfuric acid to avoid being penetrated and increase the sulfur capacity of the activated coke; the activated coke is doubly activated, parts of organic matters in the activatedcoke are hydrolyzed and degraded under the action of a zinc chloride and copper chloride composite activator in order to form an oligomer, reaction dehydration can promote the condensation and aromatization of an intermediate to form a graphite-like microcrystalline structure and produce a porous system in order to increase the sulfur capacity of the activated coke, and a prepared green powder isalso a catalytic oxidant, and can be combined with oxygen in the air to catalyze the oxidation of hydrogen sulfide, sulfur dioxide and the like into sulfur trioxide in order to improve the desulfurization effect of the activated coke, so the method has a broad application prospect.

The invention provides a method for strengthening flavor of foods through vacuum pulsating. The vacuum pulsating is formed through periodic air extraction and air charge, so that permeation and transmission of flavor substances in the foods in a porous system are facilitated. Food semi-finished products are placed in airtight vacuum pulsating equipment, negative pressure is formed through vacuumizing, after the negative pressure is maintained for a certain time, sterile air is introduced until the negative pressure becomes constant pressure, after the constant pressure is maintained for a certain time, vacuumizing is performed once again, and the steps are sequentially repeated until the pulsating vacuum effect is realized. Through periodic stimulation and pulsating, the flavor of the foods is strengthened, and the mouth feel of foods is improved.

The invention discloses a method for detecting the position degree of a porous system. The method for detecting the position degree of the porous system comprises the following steps that firstly, parts of a plurality of machining surfaces formed under the same machining reference condition are obtained, the hole groups of each machining surface is independently detected, and the machining reference of the hole set is different from the machining reference of the corresponding machining surface; then the diameter of the hole group of each machining surface is detected; secondly, at least one machining feature is selected on each machining surface to serve as a positioning mechanism, and a position degree detection tool used for detecting the machining hole set is prepared according to theselected positioning mechanism; and finally, the prepared position degree detection tool is assembled on the corresponding positioning mechanism, and the hole group of the machining surface is detected. According to the method for detecting the position degree of the porous system, a plurality of machining surfaces are subjected to decomposition detection, so that the problem of measurement of multiple machining surfaces at a long distance is solved, and the detection efficiency is improved.

The invention relates to a preparation method of a carbon-based electrode material and an application thereof, belonging to the field of electrode materials. The preparation method of the carbon-basedelectrode material comprises the following steps of: taking biomass waste and cutting the biomass waste into required shapes or molds to obtain biomass materials with shapes or molds; drying the biomass material with a shape or mold to obtain the biomass material with a fixed shape or mold; the biomass material with a fixed shape or mold is directly put into a tubular furnace, heated and carbonized under a protective gas atmosphere, and the treated biomass material is cooled to room temperature under a protective gas atmosphere to obtain a whole carbon-based electrode material. The carbon-based electrode material provided by the invention has the advantages of simple preparation method, rich raw materials, low price, environmental protection, no use of chemical activator, customizable shape, interconnected graded porous system, higher specific surface area, and excellent capacitor storage capacity and cycle stability.