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118 results about "Economic production" patented technology

Economic production is an activity carried out under the control and responsibility of an institutional unit that uses inputs of labour, capital, and goods and services to produce outputs of goods or services.

Online detecting method and device for air leakage quantity of vacuum system of turbo generator unit

The invention relates to an online detecting method and device for air leakage quantity of a vacuum system of a turbo generator unit. The device and method can be used for measuring the amount of the air leaked from a condenser which is vacuumized by using a water-ring vacuum pump, on line. The method comprises the following specific steps of: additionally arranging a temperature sensor, a pressure sensor, a gas flow rate sensor and an absolute humidity sensor behind the water-ring vacuum pump, determining the mass flow of the water vapor in a pump-out pipeline in certain particular working condition through parameters measured by the sensors, and calculating to obtain the mass flow of the pumped-out air by using a thermodynamic formula, wherein the mass flow of the pumped-out air is the sum of air leak-in rates of all negative pressure parts of the whole vacuum system. The invention has the advantages of clear and accurate measuring principle, simple measuring mechanism, convenience for installation and capabilities of measuring air leakage amount of the condenser on line and providing a reliable parameter basis for the vacuum system of the turbo generator unit to maintain a higher vacuum level and a guarantee for the safe and economic production of a power plant.
Owner:SHANDONG ELECTRIC POWER RES INST +1

Power consumption peak avoidance method based on load characteristic index system

InactiveCN105574606AAssess peak avoidance potentialGuaranteed limitable loadForecastingCoverage ratioElectric power system
The invention discloses a power consumption peak avoidance method based on a load characteristic index system. The method comprises the following steps: collecting historical power consumption load data of a power system, drawing a daily load curve, and finding out typical daily load curves of various power consumption objects through K-means clustering; with a load fluctuation rate, a limitable load for economic production guarantee, a peak value time difference rate and a peak period coverage rate as characteristic indexes, digging the characteristic indexes from the typical daily load curves, and establishing a peak avoidance value model integrating the characteristic indexes; and calculating peak avoidance values of the consumers according to the peak avoidance value model, carrying out a clustering analysis of the peak avoidance values of the power consumption objects, creating a peak avoidance ranking table, and analyzing the peak avoidance capabilities and a peak avoidance ranking of the power consumption objects according to the ranking table. Through the method provided by the invention, the peak avoidance potentials of the consumers can be truly reflected, so that the power consumers can be guided to reasonably avoid peaks. Therefore, the method achieves certain practical significance.
Owner:UNIV OF JINAN

A method for improving the castability of medium and low carbon steel molten steel

The invention provides a method for improving castability of molten steel of medium and low carbon steel. The method comprises the following steps: controlling the content of sulfur in the molten steel to be less than or equal to 0.015%; primarily smelting molten iron so as to form molten steel, and then tapping the molten steel to a steel ladle; in the process of tapping 20%-30% by weight of molten steel, adding a proper amount of deoxidant which basically dose not contain aluminum or dose not contain aluminum according to the content of oxygen in the molten steel at the terminal point of primary smelting; in the process of tapping 31%-50% by weight of molten steel, adding 3.0-5.0Kg of active lime in each ton of steel and adding fluorite the adding amount of which is 20% of that of active lime; carrying out first argon-blowing refining; refining in the steel ladle furnace and carrying out secondary argon-blowing refining; and casting by using a continuous casting process. In the method, calcium treatment is not needed so as to effectively improve the castability of the molten steel; a water gap blocking phenomenon is relieved; and the number of middle ladle continuous casting furnaces in the continuous casting process of the middle and low carbon aluminum with low aluminum content is not less than 8, thereby achieving the purpose of economic production.
Owner:PANZHIHUA IRON AND STEEL +2

Monomer in situ polymerization-based homogeneous anion-exchange membrane and preparation method thereof

The invention discloses a monomer in situ polymerization-based homogeneous anion-exchange membrane and a preparation method thereof. The preparation method is characterized by comprising: adding 0.08 to 0.80 milliliter of divinylbenzene into each 4 milliliters of chloromethyl styrene monomer, adding 0.5 to 2 grams of phenolphthalein-based polyether ketone and 0.04 to 0.20 grams of dibenzoyl peroxide or azodiisobutyronitrile, uniformly mixing to form membrane casting solution, uniformly coating on a reinforced fabric, and heating at 70 to 130 DEG C for 6 to 48 hours for in-situ polymerization;and soaking the obtained basic membrane in trimethylamine aqueous solution at a mass percentage concentration of 10 to 40 percent to perform a quaterisation for 6 to 48 hours, washing and drying. Theobtained ion exchange content of the anion-exchange membrane is high, the OH-conductivity of the anion-exchange membrane is high, the membrane phase is uniform, the structure of the membrane is stable, the mechanical strength is high, the heat resistance is high, and the membrane can be developed in series to satisfy the demands for the membranes in different fields. The method of the invention avoids using harmful solvent, is simple in product and low in cost and is a green and economic production process.
Owner:UNIV OF SCI & TECH OF CHINA

Rotating dynamical type multiphase booster pump

ActiveCN101398014AGood variable working condition performanceEasy to disassemble and maintainPump componentsPump installationsImpellerBuffer tank
The invention relates to a rotating dynamic multiphase pressure pump which comprises a pump body connected with a dynamic device and a sectional pump shell outside the pump body. The pump body comprises a homogenization unit, an intake unit, a pressurization unit and a diffusion unit. The homogenization unit has a buffer tank, the centre of which a polyporous separation tube is inserted in; the upper terminal of the separation tube passes through the buffer tank and the lower terminal is fixed to the intake unit. The intake unit comprises a water guiding wimble which is fixed on the pump shaft and is provided with a homogenization blade. The pressurization unit comprises at least two stages impeller and a series structure formed by interstage adjustors. The impeller is fixed on the pump shaft with a tapered wheel hub which is provided with the blade outside and the impeller rotates with the pump shaft; the interstage adjustor comprises the wheel hub which is interstitially sleeved with the pump shaft and is provided with a guide blade; outside the guide blade, a sleeve is fixed and the sleeve is fixed on the pump shell to the guide blade; therefore, the interstage adjustor can not rotate with the pump shaft. The diffusion unit comprises a diffuser and a discharge chamber. The pressure pump enables the oil-gas-water multiphase flow to pressurize without separation and realizes the economic production of the marginal oil field, nearby oil field and deepwater oil field.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Carbon combustion synthesis of oxides

The present invention is generally directed to a novel, economic synthesis of oxide ceramic composites. Methods of the present invention, referred to as carbon combustion synthesis of oxides (CCSO), are a modification of self-propagating high-temperature synthesis (SHS) methods in which the heat needed for the synthesis is generated by combustion of carbon in oxygen rather than that of a pure metal. This enables a more economic production of the ceramic material and minimizes the presence of intermediate metal oxides in the product. The reactant mixture generally comprises at least one oxide precursor (e.g., a metal or non metal oxide, or super oxide, or nitride, or carbonate, or chloride, or oxalate, or halides) as a reactant, but no pure metal. Pure carbon in the form of graphite or soot is added to the reactant mixture to generate the desired heat (upon ignition). The mixture is placed in a reactor and exposed to gaseous oxygen. The high-temperature exothermic reaction between the carbon and oxygen generates a self-sustaining reaction in the form of a propagating temperature wave that causes a reaction among the reactants. The reaction proceeds rapidly following ignition, and the final product comprises simple and / or complex oxides of elements present in the oxide precursor(s). CCSO also enables synthesis of oxides that cannot be produced by conventional SHS, such as when the pure metal is pyrophoric (such as Li or La) or such as when it melts at room temperature (e.g., Ga) or such as the combustion heat of the metal is relatively low.
Owner:UNIV HOUSTON SYST

Fatty alcohol ether carboxylic acid preparation method

The invention discloses a fatty alcohol ether carboxylic acid preparation method which comprises the following steps: the first step, mixing fatty alcohol ether with deionized water, adding alkali, warming and reacting, then adding a catalyst, keeping pressure under the oxygen environment to react, finishing reacting until oxygen pressure does not change again, extruding a material mixed solutionand generating alcohol ether carboxylate; the second step, performing suction filtration on the mixed solution obtained in the first step to obtain filtrate and filter cake, utilizing deionized waterto wash the filter cake and storing the filter cake in alkali liquor to be applied to the next oxidizing reaction, wherein the filtrate is a fatty alcohol ether carboxylate solution; the third step, adding acid into the filtrate obtained in the second step, warming ad reacting, then adding inorganic salt to be stirred evenly, standing and layering and obtaining fatty alcohol ether carboxylic acidfrom the upper layer. The fatty alcohol ether carboxylic acid preparation method disclosed by the invention has the advantages of simple technological process, production process easy to control, highproduct purity, stable quality, green and environment-friendly production process, quick reaction speed, low energy consumption and more economic production process.
Owner:SHANGHAI FINE CHEM CO LTD
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