76 results about "Decomposition" patented technology

The present invention is directed towards a method of purification of chloroolefins having 3 carbons and to a method to provide stable compositions of chloroolefins having 3 carbons. The chloroolefins are purified via the use of a solid absorbents for the removal of decomposition product such as phosgene and/or phosgene precursory from the reaction of the chloroolefins with oxygen. The chloroolefins stabilized against an increase of the phosgene level via the addition of inhibitors to the chloroolefins.

The invention discloses an electroencephalogram signal feature extraction method combining with a public space mode algorithm and an EMD. Firstly, electroencephalogram signals of a subject are selected as a training set and a testing set, and the signals of the single subject in two channels C3 and C4 are pre-processed; then, experience mode decomposition is conducted on the prepressed EEG signals to obtain a series of intrinsic mode functions IMFi, and energy spectrum diagrams of all the intrinsic mode functions are drawn; then, previous three order IMF components of the channels C3 and C4 undergoing a single pass test are merged to form a N * T matrix Xi, wherein N represents IMF number, T represents the number of sampling points undergoing one test, the whole experiment process includes G groups of tests, and G groups of vector matrixes are obtained and are divided into G1 groups of test vector matrixes and G2 groups of training vector matrixes which are respectively subjected to public space mode decomposition. CSP filtering is conducted on the intrinsic mode functions decomposed by utilizing the three channels and the EMD, frequency domain information of the EMD is added on the basis of the CSP, and the problem that the CSP is lack of the frequency domain information is solved.

Treated water with good water quality which can be discharged or reused is obtained by efficiently removing SS, fluorine, cyanogen, selenium, ammonia, and COD components contained in coal gasification wastewater such as gas washing wastewater generated in a coal gasification step. A method of treating coal gasification wastewater comprising steps (1) to (4), wherein the step (1) is performed prior to the step (2): (1) a fluorine removal step in which fluorine is removed by coagulation sedimentation; (2) a cyanogen decomposition step in which cyanogen is decomposed by wet oxidation or thermal hydrolysis; (3) a selenium treatment step in which selenate ions are subjected to a reduction treatment with a metal reductant; and (4) a COD/ammonia removal step in which COD and/or ammonia are/is removed.

The invention discloses an SAR (synthetic aperture radar) image segmentation method based on total-variation spectral clustering, and mainly solves the problems of low accuracy and poor regional consistency of the existing spectral clustering method when applied to SAR image segmentation. The method comprises the following steps of: (1) performing total-variation image decomposition on the input SAR image; (2) extracting the gray characteristic G of the structure part of the SAR image; (3) extracting the wavelet characteristic T of the texture part of the SAR image; (4) calculating the similarity Wij between any two points i and j in a total sample set S by use of the gray characteristic G and the wavelet characteristic T; (5) approaching to the characteristic vector space after the spectral sampling of the total sample set S through the sampling sample set Sm according to an Nystrom approaching method by use of the sampling sample set Sm selected from the total sample set S, and taking the characteristic vectors corresponding to the first k maximum characteristic values as a dimension-reducing characteristic matrix Y; and (6) performing k-means clustering on the dimension-reducing characteristic vector matrix Y, and outputting the final segmentation result of the SAR image. The method disclosed by the invention has the advantages of high segmentation result accuracy and good regional consistency, and can be applied to the SAR image target detection and target segmentation and recognition.

The invention discloses a mushroom cultivating material which is characterized in that bamboo sawdust, bamboo shells and biogas residues are used as raw materials, and the water content of the cultivating material is 62-65%. The invention also provides a manufacturing method of the cultivating material. Compared with the prior art, the mushroom cultivating material has the advantages that firstly, the cultivating material is reasonable in proportion, and a fungous material keeps certain air permeability, so that the growth speed of mycelia is increased, and the sackful time is shortened; secondly, bamboo sawdust particles are hard in texture and resistant to decomposition, and the biogas residues contains comprehensive nutrients including nitrogen, phosphorus and potassium, so that the growth of mushroom is promoted, the yield of a product is increased, and the quality of the product is improved; and thirdly, wood is replaced with bamboos and bran is replaced with the biogas residues, so that the source of a cultivating raw material is widened, and the production cost is reduced. The mushroom cultivating material has the social benefits that wood dust is replaced with the bamboo sawdust and the bamboo shells, so that part of contradiction between a fungus and forestry can be alleviated, waste materials can be changed into things of value, and energy conservation and emission reduction can be favorably realized.

The present invention provides a photocatalyst composite structure and a preparation method thereof. The photocatalyst composite structure has backbone-branch structural feature; the graphite type carbon nitride (g-C3N4) is the backbone, and carbon nanotubes(CNTs) grown in situ on the backbone chemical through vapor deposition (CVD) are the branches; and the nano photocatalyst coats on the entire backbone-branch complex structure surface. The invention has the advantages that the photocatalyst composite structure can degrade organic contaminants and realize photocatalytic water decomposition for hydrogen production under ultraviolet and visible light; in addition, the backbone-branch composite structure has large specific surface area, and can fully contact with organic pollutants and electrolyte solution to improve the photocatalytic efficiency.

The invention discloses a catalytic purification method of chlorobenzene waste gas. The invention includes the following steps: the reaction is carried out by introducing humid air into the waste gas containing chlorobenzene in the presence of the catalyst; the catalyst is composed of a carrier which is stable in humid air, transition metal oxide which is carried on the carrier, rare earth oxide and phosphoric acid; the using method of the invention is that, the invention can stably convert the chlorobenzene in the waste gas into carbon dioxide and hydrogen chloride in a long time in humid air, at lower reaction temperature and in the presence of oxidation decomposition catalyst, while the activity of the catalyst is not reduced; the catalyst is composed of transition metal oxide and rare earth oxide, so the cost of the catalyst is low. The invention uses the extremely economical method for eliminating chlorohydrocarbon in the waste gas, has no formation of polychlorinated by-products and does not cause secondary pollution, so the invention is a very effective method for the treatment of the waste gas containing chlorohydrocarbon and has greater environmental protection application prospect.

The present invention relates to a process for the manufacture of structural hybrid thermoplastic composites where organic and inorganic fibres are well dispersed in a thermoplastic matrix. The process comprises defibrillating the organic fibres with or without the presence of surface active agents using a mixer at a high shear and at a temperature lower than the decomposition temperature of organic fibres and melting point of the surface active agents to separate the hydrogen bonded fibres and generate microfibres, followed by blending and dispersion of the organic fibres in the thermoplastic matrix to produce a fibre composite, followed by further blending and dispersion of the fibre composite with inorganic fibres at a low shear to get the moldable hybrid composite, followed by extrusion, injection or compression-injection molding. Low shear mixing maintains the inorganic fibre length. The process produces high performance composite materials having excellent performance properties and are ideally suited for automotive, aerospace, furniture, sports articles, upholstery and other structural and semi-structural applications.

The invention provides an elastic wave vector imaging method and device, a storage medium and an apparatus. The method comprises the steps of building a conversion relation between group angles and polarizing angles by using the P wave speed of a set direction of an anisotropic medium of each point in an imaging area, the S wave speed of each set direction and anisotropic parameters; using an elastic wave equation to perform wave field depth prolongation of multi-component earthquake data in the imaging area to obtain a focus forward propagation wave field and a shot record back propagation wave field and corresponding Poynting vectors; according to set time intervals, decomposing the focus forward propagation wave field and the shot record back propagation wave field by using the Poyntingvectors and the conversion relation between group angles and polarizing angles; performing vector imaging of elastic waves in anisotropic media by using wave field decomposition results correspondingto all shots in the multi-component earthquake data. The imaging efficiency and accuracy can be improved.

The invention discloses a multi-fundamental frequency extraction method and a multi-fundamental frequency extraction device based on empirical mode decomposition and a hidden Markov model. The method comprises steps: an auditory filter bank is used for filtering a speech signal, and framing is carried out on the signal after filtering; an auto-correlation function is calculated on each time frequency unit for an auditory spectrum; on the basis of an intrinsic mode function obtained through the empirical mode decomposition, the instantaneous frequency of each time frequency unit dominant sound source is calculated; on the basis of each instantaneous frequency, a frequency matching function is calculated; the frequency matching function is used for building the likelihood probability of each fundamental frequency state, and a corpus is used for counting the transition probability between each fundamental frequency state and a fundamental frequency value; and the likelihood probability of each fundamental frequency state is enhanced, the enhanced likelihood probability is combined with the corresponding transition probability, and the hidden Markov model is used for extracting a multi-fundamental frequency track of the speech signal.

The invention provides a microbe water purifying additive and a preparation method thereof and an application thereof. The preparation of the microbe water purifying additive is as follows: aspergillus niger CCAM080003 is subject to activation, expansion and fermentation culture, and the culture materials collected are dried and crushed, and the additive is prepared. The microbe water purifying additive of the invention contains hydrolase such as hot activity cellulase, xylanase, dextranase, prolease and lipase, etc., and can accelerate the decomposition of organic matters in the sewage and improve the water treatment efficiency, so the microbe water purifying additive is applied to the water purification treatment in ponds, sewage treatment plants and scenic water, etc. The microbe water purifying additive of the invention can be joined with the microbe purifying agent to purify water; compared with the independent use of the microbe purifying agent, the addition of the water purifying additive can greatly improve the speed of purifying the water and obviously improving the purifying effect.

The invention discloses a method for matching cured tobacco leaves by using a tobacco leaf beating and re-drying module. The method comprises the following steps: performing classified collection on tobacco leaf samples of an aroma module, a smoke module and a mouthfeel module to serve as modeling samples by adopting a sensory evaluation method; then preparing the modeling samples into powder, scanning and acquiring a near infrared spectrogram, preprocessing the spectrogram, then performing calculation on principal components, and creating a Naive Bayes classification model by using principle component scores; and then preparing to-be-matched tobacco leaf samples into powder, acquiring a near infrared spectrum, preprocessing the spectrum, then performing principle component decomposition operation on the spectrum of the to-be-matched tobacco leaf samples by using spectrum data loads of the modeling samples to obtain principle component scores of the to-be-matched tobacco leaf samples, classifying the to-be-matched tobacco leaves by using the principle component scores and the Naive Bayes classification model, and performing module matching according to a classification result. By adopting the method disclosed by the invention, the sensory evaluation is only needed at a modeling stage, manpower and time are saved, and the to-be-matched tobacco leaves can be classified and matched quickly and accurately.

The invention provides a preparation method of a paper-graphite-CoPd thin film electrode. The preparation method comprises the following steps: (1) uniformly coating ordinary paper with a mixture of graphite and clay; (2) retaining the paper coated with the graphite for 20-30 min under the voltage of 1.0V, activating the coating graphite, and then performing electro-deposition on Co for 120-150 min under the voltage of -0.8V to obtain a paper-graphite-Co thin film electrode; and (3) enabling the paper-graphite-Co thin film electrode to stand in 0.8 mmol/L<-1> of PbC12 solution for 1-3 min to obtain the paper-graphite-CoPd thin film electrode, namely a graphite coated paper loading CoPd catalyst. According to the method, with pencil coated paper, Co is subjected to electro-deposition on the surface of conducting paper coated with graphite, and then partial Co is replaced with Pd to prepare the graphite coated paper loading CoPd catalyst, so that the electroreduction performance of hydrogen peroxide is improved. The preparation method overcomes the defects of high current collector cost, hydrogen peroxide decomposition and the like, and solves the problem that hydrogen peroxide based full cells are bad in cathode activity.

The invention discloses a carbon substrate surface TaC coating layer and a preparation method thereof. The carbon substrate surface TaC coating layer comprises TaC generated by in-situ reaction of a hybrid complex of Ta and C and carbon of a carbon substrate, and TaC generated by decomposition of the hybrid complex of Ta and C. The preparation method comprises the following steps of (1) synthesizing a TaC precursor; (2) preparing TaC precursor paste; and (3) performing high-temperature segmented thermal processing. The carbon substrate surface TaC coating layer has the advantages of high bonding strength with the substrate, high crystallinity, uniformity, compactness, corrosion resistance, remarkable thermal stability and the like. The preparation method is simple in requirement on a process device, short in period and low in cost and has wide adaptability.

The present invention is the use of Poly(2-ethyl-2-oxazoline) in the creation of peroxide gels for various applications. Such applications include bleaching of hair, teeth, laundry or any other bleachable item. Blending of the gel is accomplished by mixing the Poly(2-ethyl-2-oxazoline) with a peroxide such as hydrogen peroxide, carbamide peroxide, sodium perborate, or sodium percarbonate, usually also with water or an appropriate organic solvent. Peroxide concentrations in these new gels can reach a 30% concentration of hydrogen peroxide while maintaining a shelf life of six months at room temperature without developing peroxide decomposition.

The invention discloses a novel sorafenib tosylate polycrystalline form A and a preparation method thereof. A DSC spectrum of the crystal form comprises a transition peak at 198.0-207.5 DEG C and a melting decomposition peak at 238.5-247.5 DEG C. The invention also discloses a method for preparing the sorafenib tosylate (I) polycrystalline form A from sorafenib free base and p-toluenesulfonic acid in a mixed solvent of alcohol and water. The method has the advantages of good repeatability, simple operation, high product yield, high purity, and suitability for industrialized productions.

The present invention relates to a method for preparing tungsten oxide and tungsten powder from scheelite. The method uses the scheelite as a raw material and comprises the following steps: (1) conducting leaching reaction; (2) conducting filtering and washing; (3) conducting hydrogen peroxide extraction-decomposition to extract tungsten; (4) conducting hydrogen peroxide multiple dissolution-decomposition to purify tungstic acid; (5) pure tungstic acid calcination to prepare tungsten trioxide; and (6) conducting peroxotungstic acid solution spraying pyrolysis to prepare tungsten oxide and tungsten powder. The method only consumes cheap and easily available sulfuric acid, greatly reduces the decomposition cost of the scheelite and uses sulfuric acid to decompose; decomposed residues are gypsum; the gypsum can be used as building materials; the method does not produce dangerous waste alkali cooking residues, greatly reduces production and operation costs of enterprises, uses hydrogen peroxide as an extractant of tungstic acid, does not produce ammonia nitrogen wastewater, eliminates the technology of producing the ammonia nitrogen wastewater for many years in tungsten smelting, greatly reduces environmental protection costs, directly produces various tungsten end products and tungsten powder, and improves added value of products of the tungsten smelting enterprises.

The invention provides a method of soil improvement in a tobacco field. The method comprises the following steps: spreading crop straw and quicklime or lime nitrogen over the tobacco field to be improved for deep ploughing; performing anaerobic reduction treatment on the tobacco field with deep ploughing. The method increases the PH value of the soil in the tobacco field by applying the quicklimeor the lime nitrogen, so as to kill pathogenic bacteria and accelerate the decomposition of the straw. And meanwhile, by using the decomposition of the crop straw under the anaerobic condition, the organic matter content of the soil is increased, the soil structure of the tillage layer is improved, the carbon-nitrogen ratio of the soil and microflora are regulated, and the occurrence of tobacco bacterial wilt, black shank disease and other soil-borne diseases is controlled effectively. The experience results represent that, after the degraded tobacco field is improved by the method provided bythe invention, the PH value of the soil is increased by 10-30 %, the organic matter content is increased by 5-30 %, the incidence rate of soil-borne diseases such as tobacco bacterial wilt and blackshank disease is reduced by 60-90 %.

The invention discloses a micro-irrigation emitter, which comprises a water dropper, a spray-head and a drop-irrigation pipe (strip). The inner wall and/or the outer surface and/or a water outlet part of the micro-irrigation emitter are/is covered with a photocatalyst film coating layer. The micro-irrigation emitter of the invention has the advantages of: 1) a sterilizing function, namely, nano-TiO2 can damage cell membranes of cells because of super-oxidation decomposition capacity to cause cytoplasm loss to further cause the death of bacteria, which can prevent the occurrence of biological clogging; 2) a water purification function, namely, the micro-irrigation emitter has the function of eliminating water pollution and removing organic harmful substances in water so as to avoid chemical jamming; 3) a self-cleaning function, namely, the nano-TiO2 has extremely strong hydrophilicity so as to effectively prevent dust from being absorbed and staying to further realize the self-cleaning function and relieve physical jamming; and 4) an anti-aging function, namely, the nano-TiO2 needs to absorb a great amount of ultraviolet light to produce a light-catalyzed reaction, so the micro-irrigation emitter has relatively stronger functions of absorption, reflection, scattering and the like on the ultraviolet light and has weatherability and ageing resistance.

The invention discloses a special milk tea powder for fitness and body-building and a preparation method of the special milk tea powder, and belongs to the technical field of formula milk powder and nutritional food. The special milk tea powder is characterized by being prepared from 76-90 percent of skim milk powder, 5-20 percent of maltodextrin, 2-5 percent of instant tea powder and 0.5-3 percent of calcium beta-hydroxy-beta-methyl butyrate. The special milk tea powder has the advantages that the problems of bad taste of the calcium beta-hydroxy-beta-methyl butyrate and the like are solved; the effects of nutrition complementation and collaborative gain are achieved; the market vacancy is filled; the milk tea powder tastes good, is convenient to eat, high in safety and high in acceptability, and does not have toxic and side effects; the damage degree of muscular tissues during exercise is obviously reduced; the decomposition of muscle proteins after strenuous exercise is reduced, and the lean body mass is increased; fat can be combusted, and endurance is improved; exercise induced fatigue is resisted, and the exercise capacity of an organism is improved; the milk tea powder is simple in production process and easy to produce, and has an extremely large market developing potential.

The invention relates to the technical field of nano photocatalytic material preparation and hydrogen production application thereof, and in particular relates to a silver sulfide/tungsten trioxide-based z-type photocatalytic material as well as a preparation method and application thereof, the silver sulfide/tungsten trioxide-based z-type photocatalytic material has a zero-dimensional/one-dimensional composite structure, the zero-dimensional structure is silver sulfide nano-particles, the one-dimensional structure is a tungsten trioxide nanorod, and the silver sulfide nano-particles are dispersed on the surface of the tungsten trioxide nanorod. WO3 and Ag2s are respectively provided with one-dimensional and zero-dimensional structures, and the migration path of photogenerated charges canbe shortened, so that the photogenerated charges are rapidly transferred to the surface of the material, and the composite probability of photogenerated carriers in a material body phase is reduced; the photogenerated charge transfer mode between Ag2SNPs and WO3NRs follows a z-type photo-catalytic charge transfer mechanism, while the photogenerated charge oxidation reduction capability is maintained, the separation efficiency of the photongenerated carriers is further improved, and the silver sulfide/tungsten trioxide-based z-type photocatalytic material has better performance of photocatalytic water decomposition for hydrogen production.

The present invention discloses an apparatus and method for treating perfluoro-compounds (PFCs). The method for treating PFCs includes: (a) decomposing PFCs and eliminating a first acid gas generated by the decomposition through a pre-cleaner; (b) filtering out dust particles from the exhaust gas through a filter; (c) electrifying the dust particles in the exhaust gas by electrical discharge and collecting dusts through a dust collector; (d) decomposing PFCs using a regenerative/catalytic reaction through a catalytic reactor; (e) eliminating a second acid gas generated by the regenerative/catalytic reaction through a post-cleaner; and (f) letting the purified exhaust gas out through a fan.

The invention discloses a discharge treatment system for the produced water of a polymer flooding oilfield, and belongs to biochemical discharge treatment of tertiary oil recovery polymer-containing sewage of the oilfield. Sulfate reducing bacteria having polyacrylamide degradation ability are cultured and screened; the produced water of the polymer flooding oilfield is treated though a combined process comprising a sulfate reducing bacteria pretreatment unit, a hydrolytic acidification unit and a contact oxidation unit; the sulfate reducing bacteria pretreatment unit is used for partially degrading and removing residual HPAM (Hydrolyzed Polyacryamide) out of the sewage at first, so that the load of the subsequent treatment units is reduced; a low-intensity ultrasonic generator is used for increasing the activity of a microbial enzyme by performing irradiation treatment on the activated sludge so that the capacity of decomposition of microorganisms on organic matters is improved; several techniques are combined to achieve the synergistic effect for improving the overall treatment capacity and the applicability of the process to the produced water of the polymer flooding oilfield. The discharge treatment system provided by the invention is simple in process and easy to implement, and is expected to realize standard discharge of the produced water of the polymer flooding oilfield in combination with auxiliary units such as a sedimentation tank.

The invention discloses a multifunctional organic fertilizer and a preparation method thereof. The multifunctional organic fertilizer comprises the following raw materials in parts by weight: 30-50 parts of silkworm litter, 3-8 parts of mulberry twig, 2-8 parts of pond sludge, 10-30 parts of lignite, 5-20 parts of grass carbon, 5-20 parts of rice bran, 3-10 parts of saccharomycete, 3-10 parts of Bacillus licheniformis and 50-300 parts of purified water. The organic fertilizer adopts a biological fermentation technology, and has the advantages of multiple functions, simple production process, low production cost, high fertilizer effect and quick action; the finished product contains a large amount of Bacillus licheniformis, Bacillus subtilis, Bacillus mucilaginosus, Bacillus megaterium, Bacillus amyloliquefaciens and actinomycete, has strong aerobic fermentation and decomposition capabilities, activates microorganism propagation, and can loosen the soil, enhance the soil productivity and adsorb residual heavy metal and other harmful toxin in the soil; and the organic fertilizer can be applied to various vegetables, fruit trees, Chinese medicinal herbs, tea, melons, fruits and the like.

The invention discloses a technology for producing potassium sulphate by a liquid-phase grouting method. The technology comprises the steps of adopting concentrated sulfuric acid or dilute sulphuric acid and industry waste acid and potassium chloride as a raw material; carrying out double decomposition reaction on sulfuric acid and potassium chloride in a liquid phase; producing potassium sulphate through concentrating and grouting processes, cooling the potassium sulphate, and simultaneously neutralizing a free acid by adopting calcium carbonate powder; and finally obtaining agricultural potassium sulphate meeting the GB20406-2006 standard. The potassium chloride is high in conversion rate and short in reaction time, and a potassium sulphate product is high in quality. Furthermore, the disadvantages of serious corrosion and high energy consumption of a Mannheim method are overcome; and the problems that other double decomposition methods are complicated in potassium sulphate production procedure and the product is low in quality are solved.

The invention discloses a microbial improvement method for soil of an abandoned land of a mine. The method comprises the following steps of step 1, soil stabilization and plant surface planting through bacillus subtillis, wherein antibiotics are generated, hormones stimulating the plant growth are secreted, and host microorganisms are trapped and killed; step 2, nitrogen fixation, wherein gaseousnitrogen in the atmosphere is fixed through nodule bacteria, brown nitrogen-fixing bacteria and frankiaceae for providing nitrogen nutrients for plants; step 3, phosphorus and potassium adding, wherein potassium, silicon and phosphorus in soil minerals are decomposed through bacillus mucilaginosus; step 4, phosphorus and potassium dissolving. The microbial improvement method for the soil of the abandoned land of the mine has the advantages that through multi-proportion addition of a microbial agent, the introduction of harmful microbes is controlled and cut off, beneficial microbes are cultivated, the soil is improved continuously through the action of the beneficial microbes, heavy metals are controlled, chelated and conditioned through the decomposition characteristics of the cultivatedmicrobes, the PH value of the soil is neutralized, soil ripening is accelerated to improve the soil, the self-purification action is strengthened, and natural circulation is accelerated to improve thehealthy growth of hyperaccumulators.

A method for preparing a sodium-ion battery comprising a positive electrode and a negative electrode arranged to either side of an electrolyte, the positive electrode comprising, as the active material, a material made from sodium, the method comprising the following steps: a step of depositing a sodium salt on the surface of the positive electrode, before placing same in the battery; a step of assembling the positive electrode, the negative electrode and the electrolyte; and a step of forming a passivation layer on the surface of the negative electrode with the sodium ions from the decomposition of the sodium salt, by applying a first charge to the abovementioned assembly.