801results about How to "Improve decomposition rate" patented technology

Disclosed is a reactor, a retained catalyst structure, and a method for increasing the rate of decomposition of polysulfides and removal of hydrogen sulfide in liquid sulfur. The reactor, the retained catalyst structure, and the method include a retained catalyst structure arranged and disposed for contacting a first stream and a second stream in a reactor including a catalyst. The catalyst increases the rate of decomposition of polysulfides and facilitates the removal of hydrogen sulfide in the liquid sulfur of the first stream with the second stream. The first stream includes liquid sulfur containing polysulfides and dissolved hydrogen sulfide. The second stream includes an inert gas or a low oxygen-containing gas.

The present invention relates to a method and apparatus for removing and recovering metal such as copper from various kinds of waste water containing copper. A method for treating waste water includes treating waste water in a copper treatment step (10) comprising a combination of electrodialysis operation and electrolytic deposition operation to produce treated water (107) having a lowered copper concentration, and recovering copper from the waste water.

The invention provides a method for extracting tungsten from scheelite and producing high-quality calcined gypsum, comprising the following steps: adding a mixed acid of phosphoric acid and sulphuric acid to decompose scheelite; and after decomposition, adding hydrated gypsum seed crystals to finish the dewatering conversion process of dihydrate gypsum to obtain hydrated gypsum with good properties. The invention has the following advantages: the efficient atmospheric pressure leaching of scheelite is realized, the resource and energy consumption is saved, and the decomposition rate of scheelite can reach over 98%; the serious problems of Cl<-> corrosion and HCl volatilization in the traditional acid decomposition process can be overcome; the recycling of phosphoric acid is basically realized, and the leaching cost and the wastewater discharge are greatly reduced; the leaching device is simple, the operation is convenient and industrialization is easy to realize; the obtained byproduct gypsum has pure quality and can be used to produce gypsum boards, and can be used in retarder, plaster and the like produced by using cement; and due to the recrystallization process, the P2O5 content in gypsum is further reduced to below 0.5%.

The invention provides a method for recovering fiber from an epoxy resin / fiber composite material, which comprises the following steps: mixing the first epoxy resin / fiber composite material with reaction mother liquor for obtaining a first mixed material; heating the mixed material for decomposing the first epoxy resin / fiber composite material; and recovering the fiber from decomposition products of the first epoxy resin / fiber composite material, wherein the reaction mother liquor comprises phenolic compounds, water and a catalyst; and the catalyst in the reaction mother liquor is an alkali metal hydroxide. The method adopts the solvent decomposition method for decomposing the epoxy resin / fiber composite material without the need of carrying out breaking or smashing and other pretreatment on the epoxy resin / fiber composite material, thereby reducing the impacts on the mechanical properties of the fiber, reducing the loss of the mechanical properties of the fiber, being more conductive to carrying out plastic injection molding, hot compression molding or making into non-woven fabric for further application. Simultaneously, the method provided by the invention can realize higher decomposition efficiency of resin and lower cost.

The invention relates to a method for making landscape plant waste compost inoculum and an application of the same. The method is as follows: bacillus subtilis, trichoderma viride, lactobacillus plantarum, paracoccus denitrification, aspergillus oryzae and saccharomyces cerevisiae respectively occupying 10 to 20 mass portions are inoculated in a solid state fermentation medium so as to carry out cultivation and fermentation in dark sealing for 1 to 3 weeks at a temperature of between 25 and 30 DEG C; one week later, 250 mass portions of saw dust is added and evenly stirred and then cultivation and fermentation are continued; two weeks later, hay is placed to absorb surplus moisture and then is removed, and powdery inoculum can be obtained through drying in the shade for further use. Garden wastes are piled up and then are inoculated with inoculum with the weight occupying 1 to 3 per mill of that of a pile and dipped in warm water at a temperature of between 30 and 40 DEG C; compost is carried out at a temperature of between 55 and 65 DEG C, and pile turning and water replenishing are carried out every 3 to 4 days; then, pile turning and water replenishing are carried out every two weeks so as to keep pile water content of between 50 and 60 percent; thus, compost is completed after three weeks so as to reach to rotten innocuity standards. The strain has simple making and low cost, and can be directly used or bred continuously; moreover, the strain has no variation, no inactivation and long storage period, and the obtained compost can improve soil and increase nutrient utilization rate.

A high-temperature and aerobic composting method for solid wastes which adopts a vertical ventilation device relates to a high-temperature and aerobic composting method for the solid wastes. The composting method aims at solving the problems that in the aerobic fermentation process, the conventional bottom ventilation method causes obvious uneven fermentation at the upper part and the lower part of a stacking body in a fermentation device, thus quality stability and uniformity of the fermented product are affected. In the composting method, middle air distribution pipes are fixed in a fermentation tank arranged at the lower side of an inverted ventilating slot; both the bottom part and the middle part of the fermentation tank adopt intermittent ventilation type, the ventilation time is 5-30 minutes, intermittent time is 15-120 minutes and ventilation rate is 0.03-2m<3> / (min m<3> mixing materials). The composting method increases the contact area between air and materials; air direction forms a reverse rotational flow, which increases residence time of fresh air in the fermentation device, thus improving the mass transfer efficiency, and the operational cycle of a single fermentation is shortened by over 1 / 4.

The invention belongs to the field of building heat-insulating materials, and particularly relates to a production method for a water-proof inflammable coal ash / metakaolin-based insulation board. According to the preparation method, aggregate is metakaolin and coal ash, and polymerization is performed under the activation of an alkali activator, so that the hydration reaction efficiency of a geopolymer is increased greatly; a foaming agent is aluminum powder, so that the decomposing rate and foam producing amount are increased greatly in an alkaline environment, cost is lowered, and high economic efficiency is achieved. A selected polystyrene material has high density, high heat-insulation efficiency and a good waterproof effect. Moreover, reaction conditions are relatively mild, a reaction is easy to control, operation is easy, and the whole process flow meets the requirement of environmentally-friendly production. The prepared heat-insulating material has the advantages of light weight, high strength, good heat-insulation effect, superior waterproofness and inflammability.

The invention discloses a preparing method of large-hole high-specific surface thin diaspore, which comprises the following steps: adding SB powder in the sodium aluminate solution with 110-200g / L-Al2O3 and 1.30-1.75 causticization coefficient; setting the quality rate of seed quantity and Al2O3 quality at 1.0 constantly; decomposing at 100-150 deg.c water heating condition for 3-6 h; sucking the cooled decomposed product; washing to neutral; washing through alcohol; drying; obtaining the product. The invention possesses high-seed activity and excellent water heating stability, which can provide higher-distinguishing rate within lower seed and shorter decomposing time.

The invention discloses an inner-electric-arc plasma torch for gasifiers and relates to plasma heating equipment. The inner-electric-arc plasma torch is mainly composed of a front torch body, a rear seat, a first electrode and a fourth electrode, an arc cavity and a cooling water jacket are structured in the front torch body, an inlet and a compression nozzle are respectively arranged in two ends of the arc cavity, the cooling water jacket is arranged on the outer side of the arc cavity, and the head of the first electrode is arranged out of the arc cavity of the front torch body and is close to the inlet; the head of the fourth electrode (8) extends to the compression nozzle side in the arc cavity through the compression nozzle, a metal component at the position of the compression nozzle forms a third electrode, a second annular discharging surface is arranged on the third electrode, a metal component at the position of the inlet forms a second electrode, and a first annular discharging surface is arranged on the second electrode; or the head of the fourth electrode further extends to the arc cavity from the compression nozzle and is close to the inlet, and the metal component at the position of the inlet forms an auxiliary electrode. By the inner-electric-arc plasma torch, water vapor can be heated and decomposed in the arc cavity, energy is concentrated on water molecules, and the water molecules are easier to decompose.

The invention discloses a system and a method for energy conservation and discharge reduction in a synthesis gas produced in a fixed bed and gas making heater, which solves the problem of a large production of byproduct steam and waste gas from raw material. The system for energy conservation and discharge reduction in a synthesis gas produced in a fixed bed and gas making heater of the invention includes a fixed bed and gas making heater provided with a jacket, wherein insulating refractory material is bushed at an annular area of an inner wall of the gas making heater jacket; material which is resistant to high temperature, wear, thermal shock, slagging and flame is masonried or injected in the annular area of the inner wall of the insulating refractory material and is closed to a hearth; the method of the invention is: 1) raising the wall temperature around a gasification area of the hearth of the gas making heater to over 1000 DEG C; 2) reducing the mixing space of blowy wind and water gas in the gas making heater outside of the heater. The invention has the advantages that by adopting the composite heat insulation and slagging resistant material to be masonried around the gasification area of the hearth of the gas making heater, the surrounding wall temperature reaches over 1000 DEG C, thus reducing the amount of the byproduct steam of the water jacket, lowering slag and carbon residue from the gas making heater, and improving steam resolution ratio of the gasification.

A pressure-sensitive adhesive composition for an optical film of the present invention comprises 100 parts by weight of a (meth)acrylic polymer comprising 45 to 99.99% by weight of an alkyl (meth)acrylate monomer unit and 0.01 to 2% by weight of a tertiary amino group-containing monomer unit; and 0.01 to 2 parts by weight of a peroxide as a crosslinking agent. The pressure-sensitive adhesive composition can form an pressure-sensitive adhesive layer that has satisfactory reworkability such that optical films can be easily peeled from liquid crystal panels with no adhesive residue and also has satisfactory processability such that it can be worked without pressure-sensitive adhesive fouling or dropout.

The invention relates to a method for decomposing a thermosetting epoxy resin or a composite material thereof by high-temperature water phases, which belongs to the technical field of regenerative utilization of waste resin materials or treatment of industrial wastes. The method is characterized by comprising the following steps: putting certain amount of thermosetting epoxy resin sheets or granules, and deionization and catalyst heteropolyacid into a high-temperature high-pressure stainless steel reaction kettle; heating the reaction kettle to raise the temperature to a temperature of 250 and 370 DEG C for 30 to 120 hours; and decomposing the water diversion phase so that the decomposed product becomes an oligomer or a single substance which cannot be dissolved in liquid phase and is easy to separate. The method mainly adopts heteropoly acid, phosphotungstic acid, tungstosilicic acid, or molybdenum phosphoric acid as a catalyst, the addition of the catalyst is 0.1 to 3.0 percent of that of deionized water, and a higher decomposition rate of the epoxy resin can be obtained finally. The method does not need to use an organic solvent as a decomposing liquid, but uses water as the decomposing liquid, thus the method has low cost and is pollution-free to the environment; and the method can achieve the aims of waste regeneration and utilization as well as environmental protection.

The present invention relates to the field of air purification materials, in particular to a preparation method for micro-nano silver loaded active carbon for eliminating formaldehyde for a long term under a room temperature condition. The present invention provides the preparation method for micro-nano silver loaded active carbon for eliminating formaldehyde for a long term under the room temperature condition. The preparation method comprises the following steps of active carbon washing, ammonia water impregnation modification and micro-nano silver loading. Compared with the prior art, the formaldehyde purification material provided by the present invention is prepared from the loaded micro-nano silver component by taking the active carbon washed by ultrapure water and treated by the ammonia water as a carrier; and by utilizing adsorption and reduction of the active carbon, catalytic oxidation performance of the micro-nano silver to the the formaldehyde and an enrichment conversion cooperation mechanism between the micro-nano silver and the active carbon, the micro-nano silver loaded active carbon is high in decomposition rate of catalyzing and oxidizing the formaldehyde and is stable in performance.

The invention discloses an organic active fertilizer with a soil improving effect, and a production method thereof. The organic fertilizer mainly comprises animal dung, sludge, scorched earth, straws, traditional Chinese medicine meal, vinasse, biogas residues, internal organ powder, sweet potato root tuber, composite vegetable fibers, oil residues, ammonium humate, modified bentonite, dolomite and a compounded functional inoculant. The organic fertilizer prepared through improving the material proportions and a making technology has the advantages of improvement of the decomposition rate of organic matters, improvement of the dispersion of the organic matters in soil, improvement of the output of crops, improvement of the soil conditions and the crop quality, enhancement of the disease resistance of the crops, and effective solving of the problems of low decomposition rate, low utilization rate and agglomeration of organic fertilizers.

The invention belongs to the technical field of treatment of non-biodegradable organic wastewater, and in particular relates to a bipolar three-electrode coupling technology. A bipolar particle electrode is formed by loading one or more than one of common metal oxides such as MnO2, CuO and Fe2O3 on gamma-Al2O3 which as taken as a carrier; and the bipolar particle electrode, as well as a negative electrode and a positive electrode which are normal conductive carbon fiber felts, so as to form a bipolar three-electrode coupling reactor; and by using ozone, catalytic oxidation is strengthened; water is discharged through a hollow fiber separating membrane; therefore, non-biodegradable wastewater organic pollutants are degraded efficiently and biodegradability of wastewater is improved. The technology is low in operation cost, easy in installation and low in working pressure; meanwhile, due to application of a direct-current electric field which is lower than 10V, the coupling treatment device effectively strengthens an electrochemical reaction, and enhances adaptability to acidic, alkaline and high-temperature wastewater; chemical oxygen demand (COD) of wastewater is reduced for more than 80%; and the coupling treatment device obviously improves solid-liquid separation efficiency, remarkably improves effluent quality and stabilizes effluent quality.

The invention relates to a preparation method of nickel foam supported bimetal MOF base ozone catalyst, a production thereof and application. The preparation method comprises the steps that a metal organic framework ZIF-67 is taken as a template, nickel foam serves as a carrier, an in-situ hydrothermal-impregnation synthesis method is adopted to prepare a supported porous Mn / Co bimetal MOF base ozone catalyst, bimetal Mn / Co oxide in situ grows on a nickel foam base through a hydrothermal method, the supported bimetal oxide is modified by ZIF-67 through a impregnation method, and thus the nickel foam supported bimetal MOF base ozone catalyst is prepared. According to the preparation method, the crystal size and morphology of the catalyst are regulated effectively and accurately, evenly-distributing of active sites is facilitated, the decomposition rate on ozone and the mineralization rate on organic matter of the nickel foam supported bimetal MOF base ozone catalyst are greatly improved, the problems of separating and recycling of suspended catalysts can be effectively solved, the operation cost of water treatment is lowered, and large application prospects are achieved.

The invention relates to a method for preparing calcium oxide and sulfur from gypsum. The method comprises the following steps: (1) pretreating gypsum: drying dihydrate gypsum to form a dehydrated gypsum with the total water content of 2-10%, grinding the dehydrated gypsum into a gypsum powder; (2) decomposing the gypsum: enabling the gypsum powder in the step (1) to be in contact with a sulfur-containing process gas, reacting at the temperature of 700-1200 DEG C, and finally generating calcium oxide and a sulfur dioxide gas; (3) reducing the sulfur dioxide: enabling the prepared sulfur dioxide gas to be in contact with a carbonaceous reducing agent, reacting at the temperature of 600-1000 DEG C, and generating a sulfur-containing process gas. The sulfur-containing process gas is divided into two strands, one is used for the decomposition reaction of the gypsum in the step (2), and the other is used for producing sulfur through the processes of condensation, catalytic reaction, pelleting and the like. The conversion rate of the gypsum is high, the gypsum is consumed to produce the high value added calcium oxide and sulfur, the source of raw materials is wide, the energy consumption is low, and excellent environmental protection benefit and economic benefit are achieved.

The invention relates to an incineration technique for processing waste gas containing ammonia and a system thereof. The technique is to divide the waste gas containing ammonia into two parts which enter two combustion chambers of an incinerator at the same time. In one combustion chamber, the ammonia in the waste gas containing ammonia is decomposed and oxidized at a high temperature; in the other combustion chamber, the ammonia in the waste gas containing ammonia has oxidation-reduction reaction with NO and NO2 from reaction products of the first combustion chamber. The system comprises an incinerator which has two communicated combustion chambers respectively connected with a processing waste gas containing ammonia supplying system. The incinerator is respectively connected with a fuel gas supplying system and a combustion air assisting system. The reaction products of the two combustion chambers are connected with a reaction product post-processing system. The invention can effectively decrease consumption of the fuel gas and generation of NOX, thus meeting requirements of saving energy and protecting environment.

There is provided a dispersing emulsion excellent in storage stability and mechanical stability, particularly an asphalt modifier of an water based dispersing emulsion, which can be mixed with a hot asphalt or an asphalt emulsion, and can improve rutting resistance, toughness, and flexibility at a low temperature without losing workability. There is provided a dispersing emulsion of a thermoplastic elastomer, which is emulsified and dispersed in the presence of at least one nonionic emulsifier selected from the group consisting of a styrenated phenol poly(alkylene oxide), a poly(alkylene polyamine) poly(alkylene oxide), polyalcohol fatty acid esters, polyalcohol fatty acid esters poly(alkylene oxide), and a benzylated phenol poly(alkylene oxide).

A plasma reactor for abating hazardous materials included in process gases while being installed on an exhaust path of the process gases toward a vacuum pump is provided. The plasma reactor includes an insulator having a pipe shape through which process gases pass, a first ground electrode connected to a front end of the insulator facing the process chamber, a second ground electrode connected to a rear end of the insulator and provided with a facing part that faces a center of the inside of the insulator along the moving direction of process gases, and a driving electrode fixed to an external circumferential surface of the insulator and connected to a power supply applying an AC or RF voltage.

This invention relates to a three-stage two-seed seed crystal decomposing process. The process comprises: passing the mother liquor through an agglomeration decomposer and a seed crystal growth decomposer in order, adding decomposing seed crystal into the seed crystal growth decomposer, then passing through a reinforced decomposer, adding fine seed crystal into the reinforced decomposer, sending the overflow liquid of the reinforced decomposer to a leaf filter to obtain decomposed mother liquor, recovering fine seed crystal from the leaf filter, returning to the reinforced decomposer, returning seed crystal from the reinforced decomposer to the agglomeration decomposer, and sending part of the mother liquor via the seed crystal growth decomposer to the reinforced decomposer for circulation. The process has such advantages as reasonable procedures, low energy consumption, low cost, easy control, high decomposition rate and high product quality.

A vegetation protective soil base material activation method is applied to the fields of ecological slope protection project, ecological restoration project and side slope and landscape garden greening project and the like. The method includes that concrete greening additive, organic matter, cement and activation substance are fully mixed to be uniform and then mixed into soil base material, and a spraying and sowing machine is adopted to spray activation substance on side slope finally, wherein the activation substance is obtained by combination and activation of three microbial inoculum fertilizers of nitrogen-fixing microbial inoculum fertilizer, phosphate-dissolving microbial inoculum fertilizer and silicatebacterium fertilizer. The vegetation protective soil base material activation method provided by the invention provides growth environment for plants in concrete and is beneficial to side slope greening plant growth. Meanwhile quantity of microorganism in slope protection base material is increased, and soil nutrient activation speed is improved by utilizing decomposition of microorganism on organic matter and release action of microorganism on mineral element, thus improving soil aggregate, improving soil fertility and effectively promoting side slope restoration.

The invention relates to a method for preparing high-purity magnesium oxide by pyrolysis of magnesium chloride. The method comprises the following steps of: (1) dissolving salt lake bischofite or old brine, and then removing B2O3 and SO2<-4>, so as to obtain a magnesium chloride solution with the mass concentration of 29-32%; (2) preconcentrating the magnesium chloride solution, spraying the preconcentrated magnesium chloride solution into a pyrolysis reactor by virtue of a nozzle, decomposing under the conditions that the decomposition temperature is 500-650 DEG C, the pressure is -80 to -20Pa and the decomposition time is 1-5 seconds to obtain themolysis products of magnesium oxide and themolysis tail gas; and (3) sintering the pyrolysis product magnesium oxide sequentially subjected to hydration purifying, washing and filtering to obtain high-purity magnesium oxide with the MgO content of more than 99.0%. The invention has the advantages of simple process, low cost, high raw material decomposition rate, short decomposition time, high thermal efficiency and high thermal utilization ratio.

The invention relates to a method for restoring side slope ecology by adopting AB(Acinetobacter baumannii) bacterium plant growing bags, comprising the following steps of: placing substrates and seeds in plant growing bags sewn by adopting non-woven fabrics, obliquely palletizing the planting bags on a side slope by layers, and then curing for 30 days to accomplish side slope restoration. In the method, the AB bacterium plant growing bags are used as main materials for side slope restoration, thereby being beneficial to the activation and the long-term effectiveness of nutrients in the substrates; meanwhile, the quantity of microorganisms can be increased, and the microorganisms are used for decomposing organic matters and releasing mineral elements, thereby increasing the fertility of soil and being beneficial to the growth of greening plants on the side slope. The palletizing mode of the plant growing bags is beneficial to the utilization of moistures and simultaneously provides plastically space for vegetation regulation and control and landscape design at the later stage, thereby effectively promoting the progress of side slope restoration.

The invention discloses an oxygen / carbon dioxide combustion technique applied to a cement clinker production process. The oxygen / carbon dioxide combustion technique comprises the following steps: cooling a clinker by a first path of air, feeding a first path of high-temperature fume as secondary air into a rotary kiln after clinker cooling, preheating a second path of high-temperature fume by a heat exchange device, introducing an O2 / CO2 gas of a decomposition furnace, and feeding into a waste heat boiler for waste heat power generation; feeding a second path of air into the rotary kiln through a combustor; feeding fume discharged from the tail end of the rotary kiln into a preheater I for preheating a raw material, and feeding fume discharged from the preheater I into the waste heat boiler; feeding fume discharged from the decomposition furnace into a preheater II for preheating the raw material; generating backflow fume of which the CO2 concentration is greater than 95% from the preheater II, mixing a part of the backflow fume with oxygen separated from a third path of air, preheating, feeding the mixed gas as an O2 / CO2 atmosphere for raw material decomposition into the decomposition furnace, and performing purification, dust collection and concentration on the other part of the mixed gas, thereby obtaining CO2 of which the concentration is greater than 99%. Compared with a conventional cement clinker production process, the cement clinker production process disclosed by the invention has the advantage that the emission amount of CO2 is reduced by 60-75%.

The invention discloses a two-phase anaerobic treatment device based on magnetite and activated carbon reinforcement. The device is provided with an acidizing phase barrel body, a methane production phase barrel body and a stirring machine. Technological steps of the device comprises slowly adding FeCl3 and FeCl2 mixture into HCl solution, adjusting pH of mixed solution to be 6.5 to 7.5 through NaOH solution and obtaining black suspension precipitation namely magnetite; adding the magnetite into a suspension sludge area in an acidizing phase device and sealing the device; adding coal-quality columnar activated carbon into an activated carbon filling layer in a methane production phase device and sealing the device; respectively controlling hydraulic retention time of the acidizing phase device and the methane production phase device and pH and temperature in the devices. The two-phase anaerobic treatment device disclosed by the invention has the following effects of reinforcing acidizing phase complex organism decomposition, improving hydrolytic acidizing efficiency, quickening methane production phase organic aid and alcohol matter metabolism, maintaining acidity balance in the methane production phase and having an obvious effect of improving methane yield. The two-phase anaerobic treatment device has small invest cost, is simple to operate and can be applied to upgrading and reconstruction of an existing two-phase anaerobic technology to resist impact of high organic load wastewater.

This invention discloses a method for preparing calcium sulfate whiskers and phosphoric acid. The method comprises: phosphate ore decomposition, slurry filtration and separation, calcium sulfate whisker crystallization, separating, washing and drying. The method adds composite additive A during the during phosphate ore decomposition process, and adds composite additive B during calcium sulfate whisker crystallization process to form calcium sulfate whiskers and phosphoric acid. Composite additive A is composed of humic acid and diatomite at a ratio of 1:(2-10). Composite additive B is composed of sodium dodecyl sulfonate and sulfate or phosphate of magnesium and aluminum at a ratio of (2-5):1. The addition amount of composite additive A is 0.5-5.0% of phosphate ore. The addition amount of composite additive B is 0.1-2.0% of theoretical formation amount of calcium sulfate whiskers. The method has such advantages as adequate utilization of raw materials, low solid waste discharge amount, and low production cost.

The invention discloses roxburgh rose fruit wine and a making process thereof. The roxburgh rose fruit wine is prepared from roxburgh rose through the steps of raw material pretreatment, enzymolysis, blending, yeast activation, fermentation, mixing, ageing, clarification, filtering, filling, sterilization and the like. According to the making process, the roxburgh rose is diced and is put into high-alcohol-concentration white wine to be soaked, so that the loss of nutrient substances is avoided; the soaked roxburgh rose is pulped and is subjected to compound enzyme treatment, so that more nutrient substances can be separated from the roxburgh rose, and the utilization efficiency of the roxburgh rose is improved; by carrying out clarification by virtue of a compound clarifying agent after ageing, the finished roxburgh rose fruit wine has stable color and soft taste, is transparent and further has multiple health efficacies of promoting digestion, tonifying spleen, converging and stopping diarrhea, clearing summer-heat, enhancing physique, and the like.