6999results about How to "Increase reaction rate" patented technology

A system, including method and apparatus, for generating droplets suitable for droplet-based assays. The disclosed systems may include either one-piece or multi-piece droplet generation components configured to form sample-containing droplets by merging aqueous, sample-containing fluid with a background emulsion fluid such as oil, to form an emulsion of sample-containing droplets suspended in the background fluid. In some cases, the disclosed systems may include channels or other suitable mechanisms configured to transport the sample-containing droplets to an outlet region, so that subsequent assay steps may be performed.

The invention discloses a magnetic biological carrier and a preparation method thereof. The raw materials of the magnetic biological carrier comprise aggregate, iron oxide, a binder and a reducing agent. The preparation method of the magnetic biological carrier comprises the following steps of: mixing the aggregate, iron oxide and the reducing agent, crushing, screening with a 60-mesh sieve to obtain a mixed material, adding water which is 30-60% of the mixed material by weight to the binder, stirring for dissolving the binder to obtain a binder solution, then mixing the binder solution with the mixed material, uniformly stirring, granulating and shaping to obtain 2-10 mm granules, drying the granules till the water content of the granules is less than 10%, and calcining at the temperature of 350-1100 DEG C for 0.2-10 hours to obtain the magnetic biological carrier. The magnetic biological carrier provided by the invention can be applied to the deep treatment of secondary treatment water of domestic sewage, meets the requirements of landscape water replenishing and circulating cooling water treatment, and can be used for realizing the deep treatment and resource utilization of industrial wastewater.

The invention discloses a low-temperature SCR catalyst which takes nitrogen mingled with active carbon as a carrier. The catalyst takes the nitrogen mingled with active carbon prepared by ammonia gas ignition as the carrier and one of the oxides loaded with metallic element of Mn, V, Fe, Co or Cu as an active ingredient. The invention also discloses a specific method for preparing the catalyst. The carrier of nitrogen mingled with active carbon increases the number of base sites on the surface of the active carbon, so as to improve the adsorptive capacity of NO and O2 and lead more NO to be oxidized into NO2. The load of the metal metallic oxides of Mn, V, Fe, Co and Cu forms a large amount of acid sites on the surface of the catalyst, which promotes the absorption capability of the catalyst to NH3. The measures effectively enhances the denitration activity of the low-temperature SCR catalyst which takes the nitrogen mingled with active carbon as the carrier and extends the activity temperature window of the reaction thereof.

An intelligent device and method for diagnosing and positioning the leakage of fluid delivery pipeline are disclosed. Said method includes detecting leakage by delivery difference-pressure wave coupling method, and positioning by transient pressure wave locating method to calculate the leakage position. Its device is composed of the start and end stations to which the pressure flow and temp meters, upper-layer set and lower-layer set are mounted, communication network for real-time data exchange, and GPS correction system.

The invention discloses a method for producing biodiesel in the presence of a supported solid acid catalyst and a solubilizing agent. The method is characterized in that: (1) a hydrophobic solid acid catalyst which is high in catalytic efficiency, recyclable, easily separable and simple in post treatment process is adopted; (2) a cosolvent is introduced during a reaction process to improve reaction conditions and reduce reaction temperature and pressure; (3) the cosolvent and lower alcohols used in the reaction can be recycled; and (4) equipment corrosion and environmental pollution are avoided and advantages of low requirements on equipment corrosion, short technical process, environmental-friendly production, low investment in equipment and low operation cost are achieved.

The invention discloses a method for preparing nano-rod cellulose, which comprises the following steps: dispersing fiber raw material into sulphuric acid water solution of which mass concentration is 50 to 65 percent, hydrolyzing the fiber raw material by single-mode microwave radiation for 5 to 60 minutes at a temperature of between 20 and 50 DEG C and at the microwave radiation power of 10 to 100 watts, then adding distilled water into hydrolysis solution and diluting the hydrolysis solution to have 10 times of volume, and obtaining stable nano-rod cellulose suspension through post treatment processes such as centrifugal separation, dialysis, filter, ultrasonic dispersion and the like of the diluent, so as to obtain the nano-rod cellulose of which width is about 10 nanometers and length is about 200 to 300 nanometers.

The invention relates to a carbide preparation method belonging to the field of carbide preparation. The conventional carbide preparation technology adopts block materials and electric arc as a heat-supply, while the preparation method according to the invention adopts powdery carbon-containing materials and powdery calcium-containing materials, and the combustion of partial carbon-containing materials and oxygen-containing gas as a heat-supply at 1700-2300 DEG C to prepare carbide, wherein the carbon-containing materials is coal or coke, calcium-containing materials is calcium carbonate, calcium oxide, calcium hydroxide or carbide slag, the granularity of the carbon-containing materials and calcium-containing materials is less than 1mm, and the quality ratio is 0.5-3:1. The oxygen-containing gas for combustion is oxygen, oxygen-enriched air or air. The method solves the problems of high energy consumption and high pollution of the carbide preparation and has advantages of wide choice scope of materials, high energy utilization rate, continuous operation and large production capacity. The technology also couples with the process of carbon-containing materials coking and calcium-containing materials calcining, preheats the materials to 500-1500 DEG C utilizing the combustion of by-products CO of the carbide preparation and the assistant fuel, thereby further reducing the oxygen and energy consumption of the carbide preparation.

The invention relates to a preparation method of a loading iron based metal organic skeleton out-phase Fenton catalyst and an application thereof. The preparation method comprises the following steps of by taking MIL-100 (Fe) as a basal body, loading a ferrous component through a hydrothermal method so as to obtain the loading iron based metal organic skeleton out-phase Fenton catalyst, namely Fell@ MIL-100 (Fe). The catalyst is used for degrading an organic pollutant in waste water by using an out-phase Fenton catalyst system. Compared with the prior art, the loading catalyst prepared by the invention fully utilizes the advantages of MIL-100 (Fe) and a ferrous component in an out-phase Fenton reaction, so that the loading catalyst has high porosity, large specific surface area, and is stable in a water phase, catalytic activity sites are uniformly dispersed, the capacity is controllable and the like, meanwhile, the mutual circulation action of the Fe<2+> component in a carrier and a Fe<3+> in the basal body are utilized to further strengthen the Fenton reaction activity, the catalyst is suitable for removing refractory organics in waste water by catalytic oxidation of out-phase Fenton, the operation of the technology is simple, the cost is low, the preparation method is an efficient and energy-saving new technology, and the catalyst has the far-reaching application prospect and wide social and economic benefits.

This invention relates to acidity zeolite catalyst used for glycerol dehydration to perpare acrolein and the reaction craft. Glycerine directly dehydrate to generate acrolein under the condition of acidity zeolite catalyst, 200 to 500deg temperature, 0.001 to 3.0MPa pressure and 0.1 to 100.0h - 1 liquid airspeed, at the same time produce byproduct pyruvic alcohol. The raw material raw glycerine could be mixed liquor of water solution, alcosol, fatty acid ester solution at any ratio.