179results about How to "Concentration controllable" patented technology

The invention discloses a method of treating hexavalent chromium wastewater by immobilized microorganisms. The method aims at solving the problem that the human health is affected as the environment is severely polluted by the hexavalent chromium wastewater. The method comprises the following steps: a step I of preparing immobilized microorganism particles and a step II of treating wastewater, wherein in the step I, a microbial agent is dissolved into a sodium alginate solution, an additive is added to form a mixed solution, then the mixed solution is added into a calcium chloride solution to obtain embedded particles, and the embedded particles are stewed and immobilized, and washed by normal saline to obtain the immobilized microorganism particles. According to the method of treating hexavalent chromium wastewater by immobilized microorganisms disclosed by the invention, by selecting and matching the additive and a culture medium, the treatment effects and treatment efficiency of the hexavalent chromium wastewater can be greatly improved to meet the needs of industrially treating the hexavalent chromium wastewater. The method of treating hexavalent chromium wastewater by immobilized microorganisms has the advantages of low cost, small equipment investment, convenience in operation, and the like, has a wide market prospect and a high application value, and is worthy of being popularized and applied on a large scale.

The invention relates to a method for preparing dual-sharp printing wires by one time. The invention comprises that sheathing a film outside the polyester wires to form wire beam to be cut into wire cake; packing the wire cake by the politef coat, and be tied by the beam; immerging the wire cake in the processing liquid of shaping kettle, for 25-35min at 115-128Deg. C, while the processing liquid is formed by mixing caustic soda, caustic potash, or lithium hydrate and water, and the processing liquid is added as 28-42%; taking out the wire cake, removing the coat, washing in water to remove the left liquid and corrosion material, arranging into fixed support to be dewatered by dewatering machine, dried or baked by bake oven to be packed into final product. The invention has high efficiency and low cost, without pollution.

The invention relates to a low-temperature dew point corrosion experiment method for phosphorus in yellow phosphorus tail gas on a boiler material, and a device thereof, in particular to a yellow phosphorus tail gas phosphorus component low-temperature dew point corrosion experiment method and a device for implementing the method. A yellow phosphorus tail gas phosphorus component low-temperature dew point corrosion experiment system is contained, and consists of a heating temperature control system, a condensation reflux system and a tail gas treatment system. The experiment heating temperature control device adopts an air heating jacket, and has good temperature control capacity and quick, even and stable heating; and a tail gas absorbing device is arranged, so pollution is free in the experiment. The method and the device can perform dew point corrosion study on acids, can better simulate the low-temperature dew point corrosion of impurities such as the phosphorus on the boiler material in the yellow phosphorus tail gas comprehensive utilization, and also can be used for comprehensive utilization study on other industrial waste gases (tail gases).

The invention relates to a method for compounding concentration of emulsion used for a rolling mill, wherein the process of adopting crude oil to prepare the emulsion is realized by flow-controlled adding process of crude oil and the process of adopting desalted water to prepare the emulsion is realized by flow-controlled adding process of desalted water. The crude oil is transferred to an emulsion main tank from a crude oil tank through a dispensing pump and a flow meter is adopted to monitor flow data of the crude oil and the flow data is sent to a control processing unit; and the desalted water is transferred to the emulsion main tank from a desalted water tank through a desalted-water pump and a flow meter is adopted to monitor the flow data of the desalted water and the flow data is sent to a control processing unit. The compounding device comprises the crude-oil tank, the dispensing pump, the desalted water tank, the desalted water pump, the emulsion main tank, two flow meters and two control processing units. With the invention, the concentration of the emulsion can be easily controlled and the precision is high; the operation is simple, convenient and feasible and the maintenance is convenient; both contamination and waste can be reduced; the manufacturing cost can be reduced; and the lubricating effect of the emulsion is good and the service life of rollers can be prolonged.

The invention belongs to the technical field of solar cells, and relates to a preparing method of a carbon quantum dot modified perovskite solar cell. The preparing method comprises the steps that a carbon quantum dot solution is prepared in situ through a pulse laser irradiation anti-solvent; then a transparent conductive substrate covered with an electron transmission layer is spin-coated with aperovskite precursor solution, the carbon quantum dot solution is dripped onto a perovskite thin film in the spin-coating process, and the perovskite thin film modified by carbon quantum dots is formed after heat treatment; and finally, a hole transport layer and a metal electrode are prepared, and preparation of the perovskite solar cell is completed. The carbon quantum dots prepared through themethod are controllable in size and excellent in dispersity and stability, and can be directly introduced into the perovskite thin film, and the preparation process of perovskite is simplified advantageously. The carbon quantum dot modified perovskite solar cell prepared through the preparing method is high in photoelectric conversion efficiency and good in stability, the maximum efficiency can reach 21% or above, and the carbon quantum dot modified perovskite solar cell has extremely high practical application value.

The invention relates to gallium oxide crystals with thermoluminescence performance and a preparation method thereof. The gallium oxide crystals comprise gallium oxide and Ge4+ doped in gallium oxide, and the doping concentration preferably ranges from 0.1 mol% to 10 mol%. The gallium oxide crystals are prepared through a mode guide method. Compared with the prior art, the germanium-doped gallium oxide crystals have the good thermoluminescence performance, and the Ge4+ doping concentration can be controlled. A mixed atmosphere of Ar and CO2 is adopted, Ar gas and CO2 gas introduced at different stages are combined, decomposition and volatilization of the gallium oxide crystals in the growing process are effectively restrained, and the crystals are short in growth period and low in cost.

The invention discloses a flame retardant adsorption master batch and a preparation method thereof. The flame retardant adsorption master batch is prepared by mixing and absorbing 1-7 parts of a porous adsorbing material particle and 99-30 parts of a flame retardant additive, wherein the porous adsorbing material particle is a polyolefin open-cell foamed plastic or natural porous material with a partial open-cell structure or sponge or netty microstructure; the average particle size of the porous adsorbing material particle is 1-10 mm, the porosity is at least 30% and the average diameter of the micropore is 50-200 mu m. The porous adsorbing material particle is taken as a storage stack for absorbing a liquid or suspending flame retardant, wherein the maximum concentration is 99%; in the high polymer material machining process, the adding amount of the master batch is few, the operation is convenient and the physical and mechanical properties influence on the resin material is small; the traditional master batch preparation process can be replaced without an expensive device or heating treatment, so that the master batch preparation period and device utilization rate are greatly shortened.

A method for preparing micro-nano Ag2O with controllable shape and size relates to a micro-nano Ag2O, particularly to a method for realizing the controllable growth of the micro-nano Ag2O in shape and size by changing the concentration of the reactants. The invention provides a method for changing the reactants concentration from the whole and realizing the controllable growth of the micro-nano Ag2O in shape and size, which is a method for preparing micro-nano Ag2O with controllable shape and size. Mix AgNO3 and ammonia at the Moore ratio of 1:(0.2-10) to produce a mixture A of AgNO3 and ammonia. Add NaOH into the mixture A till the mixture A produces deposit. Stir the mixture and put it still to produce the mixture B. Centrifugate the mixture B and wash the deposit with water and alcohol for at least once in sequence to produce the target product.

The invention discloses a method for making a tea-based beverage through a capsule beverage machine, and belongs to the technical field of beverage preparation. According to the method for making thetea-based beverage through the capsule beverage machine, the problem that a tea-based beverage made by an existing tea making machine is low in quality is solved. According to the method for making the tea-based beverage through the capsule beverage machine, the capsule beverage machine comprises a brewing head provided with a water inlet pricking needle and a leading-out pricking needle, a brewing cup for accommodating a capsule, and a liquid supplying mechanism; and the liquid supplying mechanism communicates with the water inlet pricking needle, and a tea raw material accommodating cavity is formed in the capsule. The method for making the tea-based beverage comprises the steps that a water-absorbing stage is conducted, specifically, the liquid supplying mechanism leads brewing liquid into the tea raw material accommodating cavity through the water inlet pricking needle, so that tea raw materials are soaked and absorb water; a tea extracting stage is conducted, specifically, the liquid supplying mechanism leads the brewing liquid into the tea raw material accommodating cavity through the water inlet pricking needle, and soluble substances in the tea raw materials are extracted to form tea liquid; and a tea discharging stage is conducted, specifically, the tea liquid in the tea raw material accommodating cavity is discharged through the leading-out pricking needle.

The invention provides a carbon fiber sizing method. The carbon fiber sizing method has the advantages that the sizing uniformity is effectively improved, the concentration of a sizing agent in a sizing groove is easily controlled, and the curing of the sizing agent on a press roll is obviously reduced; the method also solves the problems of yarn adhering because of easy attaching and curing of resin in the sizing agent, and different sizing amount among batches because of continuous low concentration of the sizing agent in the sizing groove and continuous decrease of sizing amount of carbon fiber.

The invention discloses a preparation method of a low-silicon SAPO-34 molecular sieve, which is characterized by comprising the following steps: (1) uniformly mixing a silicon source, a phosphorus source and an aluminum source according to the mol ratio of (0.7-2)P2O5:(0.01-0.2)SiO2:Al2O3:(20-100)H2O, and drying to obtain silicon phosphorus aluminum dry glue with the solid content of not lower than 60%; (2) uniformly contacting and mixing the silicon phosphorus aluminum dry glue with a template and a silicon source to obtain a mixture, wherein the addition amount of the template is 1-2.5 mol on the basis of 1 mol of Al2O3 in the silicon phosphorus aluminum dry glue; and (3) putting the mixture in a closed reaction kettle, sectionally crystallizing under autogenous pressure, and recovering the product.

The invention belongs to the technical field of environmentally-friendly electroplating technologies, and relates to a method for obtaining nano metal iron plating by direct electroplating under the lower temperature through utilizing NaFeO2 as raw material and utilizing a sodium hydroxide water solution as an electrolyte. The method mainly comprises the following steps: using Fe2O3 powder and NaOH (which are chemical analytically pure) as raw materials and mixing at the mass ratio of 2:1, calcinating for 4 h at the temperature of 400 DEG C so as to obtain pure NaFeO2 powder raw material; adopting a NaOH solution with the mass fraction of 30-50 percent as the electrolyte, adopting a platinum wire as the anode and adopting a copper sheet as the cathode; dissolving a defined amount of NaFeO2 powder into the NaOH solution to form a NaFeO2 saturated solution; performing electroplating for 1-3 h under the condition of 25-80 DEG C and 1.8 V constant voltage, taking out the cathode after electroplating, and washing and drying, so that the nano iron plating is obtained.

The invention relates to a preparation method, amplification primers and detection reagent for a HPV full-length genome quality control product. The preparation method of the HPV full-length genome quality control product comprises: (1) acquiring a DNA template, (2) carrying out PCR amplification through amplification primers, (3) connecting a target DNA fragment to a vector by a HD Cloning linkage technology, (4) introducing the plasmid into a competent cell and then extracting the plasmid and (5) diluting the plasmid with a human genome. The preparation method of the human papillomavirus full-length genome quality control product can successfully acquire the HPV gene detection quality control product which has no risk of biological infection, can simulate a clinical sample, can be mass-produced, has a controllable concentration and can be stably preserved. The preparation method has good applicability.

The invention discloses an integrated ClO2 preparation system with relatively independent processes of electrolysis and ClO2 preparation. The system is characterized by comprising a NaClO3 electrolysis and crystal preparation unit, a ClO2 generation unit and an HCl synthesis unit, wherein an electrolyte solution containing NaClO3 crystals is fed into a solid-liquid separator for separation, NaCl and Cr2H4Na2O9 entrained by the NaClO3 crystals are washed off, the obtained NaClO3 crystals are dissolved and filtered and then enter a generator, and a solution which is separated out of the solid-liquid separator and contains NaCl and Cr2H4Na2O9 flows back to an electrolysis system and returns to an electrolytic cell for continuous electrolysis, so that NaCl and Cr2H4Na2O9 are only located in a NaClO3 preparation system without entering the ClO2 generation unit and are recycled; NaCl generated in the ClO2 generation unit is dissolved and then is sent to the NaClO3 preparation unit, and accordingly, supplementation of NaCl is not needed basically.

The invention discloses a perfume generating device which comprises a shell, a perfume bottle assembly, an MCU, a switching assembly, a fan and remaining amount monitoring assembly. The MCU is electrically connected with an LIN transceiver, the perfume bottle assembly comprises a bottle body, a valve assembly and a bottle cover, the bottle cover is provided with an air inlet hole and an air outlethole, and the valve assembly comprises an air door part and an elastic part. The air door part seals the air inlet hole and the air outlet hole, the switching assembly comprises a pressing disc, a motor and a pressing rod hinged into the shell, one end of the pressing rod is connected with the pressing rod, and the other end of the pressing rod is in threaded connection with a transmission shaftof the motor. An air inlet and an air outlet are formed in the pressing disc, the fan is arranged on the air inlet, the shell is provided with a vent opening and an air outlet pipe, the air outlet iscommunicated with the air outlet pipe, the bottle body is connected with two metal sheets, and the two metal sheets, the fan and the motor are electrically connected with the MCU. The perfume generating device can be incorporated with a vehicle control system and is hidden in a console. The perfume bumping spilling probability is reduced, perfume switching is automatically controlled, the fragrance diffusion concentration is controllable, and the remaining amount of perfume is automatically detected.

The invention discloses an electrospinning synthesis method of a MoO3 sheet structure, and the electrospinning synthesis method comprises the steps of: adding a molybdenum salt, hydroxylamine hydrochloride, dopamine hydrochloride and PVP into a mixed solvent of ethanol, DMF and 1,5-pentanediol, stirring to obtain a spinning solution, and forming precursor fiber by an electrospinning method; calcining the obtained precursor fiber to obtain a product. The method designs a novel precursor reaction system, has the advantages such as wide sources of raw materials, low price, simple operation and equipment, controllable parameters, uniform product size, good repeatability and dispersibility, and has broad application prospects in gas sensing, adsorption, and other fields.

The invention discloses a preparation method for GaN nanostructure with adjustable Ga vacancy, belonging to the field of nanometer materials and a preparation technology thereof. The preparation method adopts a chemical vapor deposition method, and comprises the following steps of taking high purity Ga2O3 powder and NH3 gas as Ga source and N source respectively; putting the Ga2O3 powder in a ceramic boat; putting the ceramic boat at a central heating area; sealing a horizontal tube furnace; vacuumizing till the pressure is below 1*10<-2>Pa, aerating argon of flow of 100sccm, and heating the tube furnace; aerating argon of flow of 100-200sccm at 980 DEG C and keeping aerating for 3 hours; stopping heating, naturally cooling to 600 DEG C, opening a heating device again and heating to 980 DEG C and keeping for 2 hours; and naturally cooling to room temperature, turning off argon and taking a sample out. The preparation method has the characteristics of being simple, low in cost, high in productivity, light in environment contamination, and easy to promote, and the product is uniform and is good in controllability.

The invention relates to the technical field of processing of traditional Chinese medicine materials, in particular to equipment and a method for sulphur fumigation of traditional Chinese medicine materials and medicinal slices. The method is characterized by comprising the following steps: 1) placing the traditional Chinese medicine materials, i.e. uniformly paving the traditional Chinese medicine materials to be subjected to fumigation in a sulphur fumigation box; 2) adding sulphur proportionally according to the amount of the added traditional Chinese medicine materials; 3) burning the sulphur, setting temperature, time and air pressure in the fumigation box, and subjecting the traditional Chinese medicine materials to fumigation by adopting vacuum and low temperature; 4) monitoring and adjusting temperature and concentration of sulfur dioxide as well as the air pressure in real time; and 5) absorbing and processing sulfur dioxide waste gas. According to the method and equipment for sulphur fumigation of the traditional Chinese medicine materials, controllable operation of the sulphur fumigation process of the traditional Chinese medicine materials is realized. Through controlling key factors such as temperature, concentration of oxygen and sulfur dioxide and the like in the fumigation process, the loss of active ingredients in the traditional Chinese medicine materials is reduced, and the residual quantity of sulfur dioxide and heavy metal in the traditional Chinese medicine materials can be controlled, therefore, the quality of the traditional Chinese medicine materials can be ensured to the maximum degree. The equipment has the characteristics of convenience in operation, controllable fumigation parameters, low cost, convenience in generalization and the like.

The invention belongs to the technical field of ultrafiltration membrane manufacturing, and more specifically relates to a grafted modified chlorinated polyvinyl chloride ultrafiltration membrane, and a preparation method thereof. The grafted modified chlorinated polyvinyl chloride ultrafiltration membrane is composed of, by weight, 16.5 to 20.5% of a membrane base material, chemically pure chlorinated polyvinyl chloride (CPVC) resin, 73.0 to 80.5% of a solvent, chemically pure N,N-dimethyl acetamide (DMAC), 2.5 to 5.5% of a pore-foaming agent, chemically pure polyvinylpyrrolidone (PVP) K30, 0.5 to 1.5% of an additive, chemically pure nanometer-grade aluminium oxide (Al2O3); and 0.5 to 1.5% of a grafting agent, chemically pure polyethylene polyamine. According to the preparation method, membrane base material molecules are grafted with charged groups so as to change surface charge of the membrane base material molecules and improve pollution resistance of the grafted modified chlorinated polyvinyl chloride ultrafiltration membrane.