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356results about How to "less investment" patented technology

Middle-low-temperature flue gas desulfurization, dedusting and denitration and denitration catalyst thermal-desorption integrated device

The invention relates to a middle-low-temperature flue gas desulfurization, dedusting and denitration and denitration catalyst thermal-desorption integrated device. The integrated device comprises a desulfurization, dust-collection and purification section, an desorption, ammonia-spraying and mixing section and a denitration reaction section which are integrated in a tower body from bottom to top, wherein the desulfurization, dust-collection and purification section comprises an ash bin, a closed dust discharging valve, a flue gas inlet, an airflow uniform-distribution and flow-guiding plate, filter bags and a pulse-jet device; the desorption, ammonia-spraying and mixing section comprises an ammonia-spraying structural body, a thermal desorption gas conveying-jetting structural body and mixed flow-equalizing structural bodies; the denitration reaction section comprises a denitration catalyst and a purified flue gas outlet. Compared with the prior art, the integrated device has the beneficial effects that (1) the processes of desulfurization, dedusting and denitration of flue gas as well as the thermal desorption of the denitration catalyst are integrated; (2) the service life of the denitration catalyst is long; (3) the denitration efficiency is high; (4) ammonia gas and flue gas as well as high-temperature thermal desorption gas and flue gas are in full contact with each other; (5) the denitration catalyst can be regenerated through online thermal desorption; (6) a denitration catalyst dust-cleaning system can be omitted.
Owner:ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC

Feed additive by mixedly fermenting shrimp heads and vegetable feed proteins and processing method thereof

The invention discloses a feed additive by mixedly fermenting shrimp heads and vegetable feed proteins and a processing method thereof. The method comprises the following steps of: performing squeezing and crushing, pulping with water, and filtration and separation on the shrimp heads to separate out shrimp shells so as to obtain a shrimp paste raw material; mixing the shrimp paste and the vegetable feed proteins according to a proportion, adding bacteria for solid fermentation, and drying and crushing to prepare fermented feed protein powder; and drying the separated shrimp shells to prepare raw materials of chitosan and shrimp shell powder. The method has the advantages of simple process, small equipment investment and low cost; and the feed additive has the advantages of full aroma of the fermented feed protein powder, good palatability, high utilization rate of proteins, rich beneficial functional nutrients such as astaxanthin, small peptide, probiotics and the like, wide application to aquatic and livestock and poultry feeds, improvement of survival rate, good animal growth effect, good feed attraction to aquatic animals, capacity of replacing fish meal in the livestock and poultry feeds, capacity of greatly replacing fish meal in high-grade aquatic feeds, remarkable reduction of feed cost, contribution to environmental protection, power saving, efficiency improvement, and remarkable social and economic benefits.
Owner:薛晓宁

Non-intrusive resident load identification method based on S_Kohonen

The present invention discloses a non-intrusive resident load identification method based on S_Kohonen. The method comprises the steps: the step 1: determining a switching event according to the changing of an active power at a home electric power inlet, and when the switching event happens, collecting current samples of electric appliances having generation of the switching events at the home electric power inlet; the step 2: performing frequency-domain analysis of the collected electric appliance current samples, extracting the frequency-domain harmonic amplitudes of the collected electric appliance current samples as load features of each electric appliance, and forming a load feature base; the step 3: designing an S_Kohonen neural network suitable for resident load identification, and determining the number of nerve cells of the input layer and the output layer of the S_Kohonen neural network and the scale of the competition layer to determine a selection mode for obtaining the nerve cells and a learning algorithm of weight regulation; the step 4: performing parameter initialization; the step 5: performing training of the S_Kohonen network through a training set and performing test of the training set; and the step 6: regulating the network parameters to realize optimal network performances.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Technique for joint production of methanol and natural gas with methyl hydride containing synthesis gas

The invention belongs to the technology field of coal gasification comprehensive utilization and provides particularly a technique for preparing methanol and natural gas from methane-containing synthetic gas. The technique can overcome the shortcomings of a processing scheme of methanol in synthetic gas in the prior art; and the technique comprises the following steps: methane-containing synthetic gas is pressurized and then mixed with recycle gas from a methanol synthetic tower to synthesize methanol; the methanol-containing gas from the methanol synthetic tower is heat-exchanged with the gas mixture fed into the tower and cooled, and methanol is separated; a part of the methanol-separated gas as purged gas is introduced into a methane synthesizing device, and the other part is introduced into the methanol synthetic tower to continuously react to obtain natural gas after it is pressurized via circulator, recycled and then mixed with the methane-containing synthetic gas. The technique combines synthesis of methanol of high CH4 inert gas and production of natural gas by re-synthesizing methane from purged gas obtained from methanol synthesis. With the technique, two synthesis pressures and heat energy utilization can be combined together; thus making full use of the material and achieving the purposes of saved investment, energy and consumption and good benefit.
Owner:中国石油和化工勘察设计协会煤化工设计技术中心

Integrated device for hydraulic classification and sorting of coarse slime as well as classification and sorting system

InactiveCN101502818AReduce construction investment and operating costsless investment
A coarse coal slime hydraulic grading and sorting integration device and a sorting system using the device belong to the technical field of cleaning unit and are used for shortening technological processes of coal separation and improving the sorting accuracy of the coal slime. The grading and sorting integration device comprises a hydraulic grading swirler, an upwelling current sorter and a connecting barrel, which are connected in sequence. A coarse coal slime grading and sorting system is composed of the grading and sorting integration device, a hydraulic grading swirler barrel, a hydraulic grading swirler pump, an arc-shaped sieve, a coal slime centrifuge, a gangue dewatering sieve, a cleaned coal belt conveyer, a gangue belt conveyer and a main pipeline. The hydraulic grading swirler barrel is connected with the feeding hole of the hydraulic grading swirler, the overflow port of the hydraulic grading swirler is connected with the pipeline of a floatation system. The overflow port of the upwelling current sorter, the arc-shaped sieve, the coal slime centrifuge and the coal slime belt conveyer are connected in sequence. The overflow port at the bottom of the upwelling sorter is connected with the gangue dewatering sieve, the gangue belt conveyer and a thickener in sequence.
Owner:煤炭科学研究总院唐山研究院

Filler-free synergistic compound fertilizer produced by urine syrup ammonia-acid method and production method thereof

The invention discloses a filler-free synergistic compound fertilizer produced by a urine syrup ammonia-acid method to pelletize and a production method thereof. The production method thereof comprises the following steps: selecting raw materials according to the product formulation, and metering, crushing and evenly mixing the raw materials; adopting the urine syrup ammonia-acid revolving drum pelleting process, carrying out first-segment drying, second-segment cooling and coarse and fine screening on the mixture, and then feeding the screened mixture into a coating machine; utilizing the front end of the coating machine to spray fertilizer synergist by a continuous pulverization coating method, utilizing the middle end of the coating machine to spray pasty anti-blocking agent, and utilizing the tail end of the coating machine to add powdery anti-blocking agent; and adequately stirring and packaging to obtain the finished product. The filler-free synergistic compound fertilizer produced by the pelleting process of the urine syrup ammonia-acid method has small investment, simple operation, low production cost, obvious energy conservation effect, beautiful product appearance, good dissolubility and improved nutrient utilization ratio; and after the filler-free synergistic compound fertilizer is applied to crops, production and income are increased.
Owner:CNSG ANHUI HONG SIFANG FERTILIZER IND CO LTD

Coal syngas circulation gas free methanation technology

The invention belongs to the chemical engineering field, and specifically relates to a coal syngas circulation gas free methanation technology. The technology firstly divides a methanation reactor into two parts, the purified raw material gas is divided into a plurality of gas flows, then the gas flows is introduced into the front methanation reactor, wherein parts of the front methanation reactor are connected through a combination mode of serial connection and parallel connection; the gas in the each level of methanation reactors in the front part goes out from the outlet of the first reactor and the outlet is serially connected to other level methanation reactors, or the gas is divided into a plurality of gas flows and enters other level reactors which are connected through a combination mode of serial connection and parallel connection. The technology adopts water steam as the diluting gas for diluting the raw material gas in a methanation reactor, the water steam is mainly applied to the high temperature methanation reaction technology, the pressure of the by-product namely steam is larger than the methanation reaction pressure, and thus the steam can be directly added into the raw material gas in a methanation reactor. The technology does not need a circulation gas compressor, so the production cost is reduced. Because the methanation reaction is a strong heat dissipation reaction, the added water stream is reduced so as to improve the energy utilization rate.
Owner:CNOOC GAS & POWER GRP +1

Method for separating sodium fluoride crystals from silicon dioxide

ActiveCN101717097ASimple operation and controlless investment
The invention relates to a method for separating sodium fluoride crystals from silicon dioxide, in particular to a method for jointly producing sodium fluoride and sodium silicate by using sodium fluosilicate which is a by product of phosphate fertilizer production. The method of the invention comprises: a, stirring a sodium fluosilicate solid and 30 to 50 percent solution of sodium carbonate with a big force to perform a reaction to obtain solution containing sodium fluoride crystals and a silicon dioxide precipitate; b, adding sodium hydroxide into the solution obtained by the step a in a theoretical dose based on a molar ratio of Na2O to SiO2 of 30 to 50 percent to dissolve the silicon dioxide to form solution of sodium silicate and the sodium fluoride crystals, wherein the concentration of the solution of the sodium hydroxide is 45 to 50 percent; c, centrifugally filtering the solution obtained by the step b, washing solid sodium fluoride, and drying the sodium fluoride to obtain a finished product of the sodium fluoride, wherein washing liquor obtained after the solid sodium fluoride is washed is used for preparing the solution of sodium carbonate; d, concentrating liquid separated by the step c, separating the precipitated sodium fluoride, and returning the solid sodium fluoride separated out to the step a; and e, concentrating the liquid sodium silicate obtained by the step b to obtain liquid sodium silicate having a standard density and a standard modulus. The method has the advantages of simple operation and control, low investment and high yield.
Owner:YUNNAN YUNTIANHUA

Process method for refining austenitic manganese steel by blowing argon gas into medium frequency induction furnace

The invention discloses a process method for refining austenitic manganese steel by blowing argon gas into a medium frequency induction furnace, comprising the following steps of: (1) designing and manufacturing a gas diffuser; (2) mounting the gas diffuser in the center of the bottom of the medium frequency induction furnace and connecting the medium frequency induction furnace with an argon gasblowing system; (3) when furnace charge is molten to form a about 1/3 molten pool, quickly melting at high power and starting to blow argon gas into the furnace from the gas diffuser at the bottom; (4) controlling the pressure and the flow rate for blowing the argon gas according to the capacity of molten steel so as to fully remove harmful gas and inclusion in the molten steel and homogenize thetemperature and components; (5) cutting off a power supply and cooling and continuously blowing the argon gas; and (6) measuring the temperature, tapping and casting. By blowing the argon gas to refine, gas and nonmetallic inclusion in the molten steel can be effectively removed, the desulfuration and the deoxidization can be achieved and the components and the temperature of the molten steel canbe homogenized. By using the method, the purified molten liquid can be molten, thereby improving the metallurgical quality of the molten steel.
Owner:广西长城机械股份有限公司

Roasting pretreatment process for extracting vanadium pentoxide from high-carbon scherbinaite-containing coal mine and vanadium pentoxide extracting method

The invention discloses a roasting pretreatment process for extracting vanadium pentoxide from a high-carbon scherbinaite-containing coal mine and a vanadium pentoxide extracting method, which comprise the following steps that: the stone coal scherbinaite is used as raw materials, the raw materials are crushed and pressed into blocks and are dried, then, the materials are continuously put into a tunnel kiln capable of regulating the air volume and the pushing speed to be roasted, the temperature is controlled between 400 DEG C and 1000 DEG C in the roasting process, the roasting time lasts 7hto 40h, and the pretreatment process is completed after the roasting. The roasting products are crushed, and then, vanadium pentoxide products are obtained sequentially through leaching, neutralization, oxidization, impurity removal, enrichment, ammonium salt vanadium deposition and calcination. The process has the advantages that the application range is wide, the energy consumption is low, the heat value utilization is sufficient, the equipment investment is low, the environment pollution is little, and the like. The method is suitable for being applied to the vanadium pentoxide extraction from the high-carbon scherbinaite-containing coal mine.
Owner:肃北蒙古族自治县西矿钒科技有限公司

Zero discharge treatment process of saline sewage produced by refining

The invention provides a zero discharge treatment process of saline sewage produced by refining. The treating process comprises the steps that saline sewage produced by flue gas desulfurization is conveyed to an evaporation chamber after undergoing two-stage filtration and heat exchange, evaporated steam is mixed with fresh steam after being pressurized and the steam mixture enters the shell pass of a heater to be condensed and discharged; saline water in the tube pass of the heater is heated to be evaporated and crystallized in the heater, the steam enters a compressor and salt crystals are deposited in a salt leg at the bottom of the evaporation chamber and are swirled and centrifugally concentrated; salt crystal filter cakes are dried in a drying machine, moisture is volatilized and is discharged from the top of the drying machine, gases pass through a two-stage cyclone separator to separate salt solid particles and the salt solid particles are emptied by a drying draught fan, and the salt solid after dehydration and drying is packaged to prepare sodium sulfite or ammonium sulfate products. The process provided by the invention has the effects of overcoming the defects of the prior art, really achieving zero discharge treatment of sewage and producing sodium sulfite or ammonium sulfate with economic value and has the beneficial effects of high energy efficiency, low investment, short flow, small floor area, low failure rate and satisfaction of long period operation.
Owner:田晓良
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