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35 results about "Sulfurifustis" patented technology
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Wastewater treatment method capable of realizing sulfur synergy denitrification simultaneous nitrogen and phosphorous removal
ActiveCN104098177AEasy to operateGuaranteed stabilityTreatment with anaerobic digestion processesNitrateSulfate
The invention relates to a wastewater treatment method, particularly to the wastewater treatment method capable of realizing sulfur synergy denitrification simultaneous nitrogen and phosphorous removal. The wastewater treatment method comprises the steps as follows: (1) starting of a reaction device; (2) intensification of sulfur synergy denitrification nitrogen and phosphorous removal microbes; (3) stable operation of a wastewater treatment system. According to the method, all substances are converted under the microbial action, organic matters in inlet water are degraded into carbon dioxide, sulfate radials are firstly converted into sulfides and then oxidized into the sulfate radials to finish a cycle, and meanwhile, nitrate radials added under the condition that the organic matters are consumed are converted into nitrogen. At an anaerobic phosphorus release stage of the system, the conversion rate of the sulfides is up to 30% and the removal rate of the organic matters is up to 95%; at an anoxic phosphorus absorption stage of the system, the conversion rate of nitrate to nitrogen is up to 98%, the conversion rate of the sulfate is up to 90%, and meanwhile, the phosphorus removal effect is up to 80%.
Owner:SUN YAT SEN UNIV
Combination device for adsorption desulfurization and biological reactivation adsorption agent, and operating method thereof
InactiveCN101130438AAvoid disassemblyAvoid loadIon-exchange process apparatusIon-exchanger regenerationCooking & bakingSorbent
The invention discloses a uniset to regenerate absorption with adsorbing desulfuration and microbial utilization method and operational method in biological technique domain, which is characterized by the following: communicating two adsorbing desulfuration fixed bed reactor and more than one biological sulfur removal reactor with agitating device through line; assembling valve on the line; assembling transmitting pump on the line; stripping sulfur compound with the sorbent in the adsorbing desulfuration fixed bed reactor; mixing sulfur removal microbial cell, water phase and little oil phase in the biological sulfur removal reactor evenly; leading oil-water microemulsion into the adsorbing desulfuration fixed bed; desorbing sulfur compound and aromatic hydrocarbons; transferring into the biological sulfur removal reactor; stripping sulfur with sulfur removal microbial cell; leading air into adsorbing desulfuration fixed bed reactor; drying the adsorbent; baking; getting regenerated adsorbent.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Bacillus and application thereof in nitrogen removal and sulfur removal of culture water body
ActiveCN111100824ACompliance with Biosafety RegulationsSelf-supportingBacteriaMicroorganism based processesEcological safetyElectron donor
The invention discloses a bacillus and an application thereof in nitrogen removal and sulfur removal of a culture water body, and belongs to the technical field of environmental microorganisms and environmental engineering. The strain is named as (Bacillus sp.)SC16, and has a preservation number of GDMCC No:60942. The strain is obtained by screening bottom mud of an aquaculture pond, do not have ecological safety risk when being applied to aquaculture water again, and accords with biological safety regulations. The strain has autotrophic and denitrification performance, can utilize inorganic carbon as a unique carbon source and utilize ammonia nitrogen, nitrate nitrogen or nitrite nitrogen as a unique nitrogen source for metabolism, and thus achieves the purpose of removing the nitrogen source; the strain has sulfur removal performance, can utilize sulfides as an electron donor to oxidize the sulfide to obtain energy; and meanwhile, the strain has strong tolerance to nitrite and has good growth. The strain can be prepared into a microecological preparation to be applied to nitrogen removal and sulfur removal treatment of a culture water body, has a wide application prospect, and has good social benefits.
Owner:JINAN UNIVERSITY
Halomonas with aerobic denitrification and heterotrophic sulfur oxidation functions and application thereof
ActiveCN112551692AImprove recovery rateGrow fastWater contaminantsTreatment with aerobic and anaerobic processesHalomonas salinaNitration
The invention discloses halomonas with aerobic denitrification and heterotrophic sulfur oxidation functions and application thereof , and belongs to the technical field of microorganism application. The invention provides two strains of halomonas sp. MCCC 1A17488 and MCCC 1A13718 with aerobic denitrification and heterotrophic sulfur oxidation functions, and the preservation numbers of the halomonas sp. MCCC 1A17488 and the MCCC 1A13718 are as follows: GDMCC No:60985 and GDMCC No:60984. The halomonas sp. MCCC 1A17488 and MCCC 1A13718 can be applied to nitrogen and sulfur removal, can be suitable for biological nitrogen removal treatment of various nitrogen-containing wastewater, has efficient denitrification and heterotrophic sulfur oxidation capacity under aerobic and anoxic conditions, can rapidly and efficiently remove nitrate, nitrite, ammonia nitrogen, sulfide and the like, and has good application prospects in the biological nitrogen and sulfur removal of sewage, sludge, sedimentsor culture water bodies.
Owner:THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES +1
Sulfur-free wine brewing method
InactiveCN110862885APrevent oxidationPrevent rancidityMicroorganism based processesWine preparationBiotechnologyGrape wine
The invention discloses a sulfur-free wine brewing method and relates to the technical field of wine brewing. According to invention, in a wine fermentation process, sulfur dioxide or other sulfides are not added, and inert gases such as nitrogen, argon and the like are used for sterilization in a pressurizing and cold treatment mode. Sanitary management is strictly controlled in a production process, growth of microorganisms and miscellaneous bacteria is inhibited, wine is prevented from being oxidized, rancid and aged, and pure natural healthy wine is formed. In a wine fermentation process,sulfur dioxide or other sulfides are not added, and a cold sterilization technology is utilized. Inert gases such as nitrogen, argon and the like are adopted for sterilization in a pressurized treatment mode, and sanitary management is strictly controlled in a production process, so that growth of microorganisms and miscellaneous bacteria is inhibited, wine is prevented from being oxidized, rancidand aged, and the wine can be kept for one year or more at room temperature without being degraded while taste, flavor and nutrient substances are not lost. The brewed pure natural healthy wine contains no sulfides and does not influence human health.
Owner:宁夏贺兰山东麓庄园酒业有限公司
Domestication culture method of sulfur autotrophic short-cut denitrification sludge
InactiveCN113548731AEasy to operateAchieve nitrous accumulationBiological treatment apparatusTreatment with aerobic and anaerobic processesBiotechnologyHomoserine
The invention belongs to the technical field of wastewater treatment, and provides a domestication culture method of sulfur autotrophic short-cut denitrification sludge, wherein the method comprises the following steps: S1, seed sludge selection; S2, an earlier stage of domestication culture; S3, a middle stage of domestication culture; S4, a later stage of domestication culture; and S5, at the last stage of domestication culture, when the sulfur autotrophic denitrifying bacteria in the sludge become dominant bacteria, enabling sludge domestication to be successful, and enabling the proportion of the sulfur autotrophic denitrifying bacteria Thiobacillus sp. to be larger than 40%. The method disclosed by the invention is simple to operate, can be realized only by adding a trace amount of N-dodecanoyl-L-homoserine lactone and combining with water quality adjustment, and is low in operation cost; and the domestication method is rapid and efficient, nitrous accumulation can be achieved within 40 days, sulfur autotrophic short-cut denitrification sludge can be domesticated, and the method can be used for combined treatment of mixed wastewater containing ammonia nitrogen, nitrate nitrogen and sulfide.
Owner:ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Mixed nutritional denitrification method based on sulfur reduction and sulfur autotrophic denitrification
ActiveCN113716689AAchieve cycleLow additional costWater treatment compoundsWater contaminantsWastewaterSulfurifustis
The invention relates to a mixed nutritional denitrification method based on sulfur reduction and sulfur autotrophic denitrification. The method comprises the following steps of: 1, dividing raw wastewater containing sulfate into a part A and a part B; 2, inputting the part A of raw wastewater into a sulfate reduction reactor; 3, inputting the part B of raw wastewater and effluent supernatant of the sulfate reduction reactor into an anoxic tank, and communicating a water outlet of the anoxic tank with an aerobic tank through a sulfur autotrophic tank, so as to enable nitrification liquid to flow back to the anoxic tank from the tail of the aerobic tank; and 4, communicating a water outlet of the aerobic tank with a sedimentation tank, and carrying out mud-water separation on the wastewater treated by the aerobic tank through the sedimentation tank. According to the method provided by the invention, the total dissolved sulfide generated by sulfate in the raw wastewater under the action of SRB is fully utilized as a denitrification matrix; and the problem that the synergistic effect is singly exerted and the overall effect of the system is neglected in the existing research is solved.
Owner:CHINA THREE GORGES CORPORATION +1
Superfine sulfur-containing tailing concrete
ActiveCN113149551AEasily brokenHigh bulk densitySolid waste managementClinker (waste)Process engineering
The invention discloses superfine sulfur-containing tailing concrete. The superfine sulfur-containing tailing concrete is prepared from the following raw materials: low-clinker cement and superfine sulfur-containing tailings. According to the present invention, the cementing technology principle is adopted, the M32.5 low-clinker composite cement is adopted as the cementing material, and the superfine sulfur-containing tailings are adopted to replace the cement and the water in the same volume so as to prepare the superfine sulfur-containing tailing high-content concrete; sulfate released by acidification of sulfide of the superfine sulfur-containing tailings is fully utilized to excite high-quantity auxiliary materials of the M32.5 cement, the cementing strength is improved, the economic value of the superfine sulfur-containing tailings is improved to the level of the M32.5 cement, waste is turned into wealth, and harm is turned into treasure. The concrete disclosed by the invention is stable in mechanical property and micro-expansive. The method is simple to operate and low in cost, and has a wide application prospect under the background of shortage of raw materials in the building material market.
Owner:安徽铜冠产业技术研究院有限责任公司
Sulfurization detection resistor
ActiveUS20210199562A1High precisionIncrease variation timingMass resistorsWeather/light/corrosion resistanceElectrical conductorAcrylic resin
A sulfurization detection resistor includes: a rectangle-shaped insulating substrate; pair of front electrodes formed at both ends facing each other on a surface of the insulating substrate; plurality of sulfurization detection conductors arranged in parallel between the paired front electrodes; plurality of resistors connected between the ends of each of the sulfurization detection conductors and the paired front electrodes; and sulfide gas impermeable protective film that covers all of the resistors and some of the sulfurization detection conductors, wherein each of the sulfurization detection conductors has a sulfurization detection unit exposed from a window hole in the protective film; and by covering the sulfurization detection units with different types of sulfurization rate adjustment layers formed of an acrylic resin, a silicon resin, and the like, timing of disconnection is set so as to vary in response to a cumulative amount of sulfurization in each of the sulfurization detection units.
Owner:KOA CORP
Sulfur composite material for lithium-sulfur battery and preparation method of sulfur composite material
ActiveCN110931758AAvoid uneven loadImprove performanceCell electrodesLi-accumulatorsLithium–sulfur batteryNanoparticle
The invention relates to a sulfur composite material for a lithium-sulfur battery and a preparation method of the sulfur composite material, the sulfur composite material comprises a carrier and an active substance loaded on the surface of the carrier, the active substance is sulfur, and the carrier is composed of a nano-particle material, a linear nano-material and a layered nano-material. The multi-dimensional carrier is constructed by the nano materials with different microstructure, the content of active substance sulfur in the composite material can be remarkably improved, a good electronic conductive network is formed through the bridging effect of the high-conductivity nano particles and the chemical adsorption effect of the high-conductivity nano particles on polysulfide, and the charge-discharge cycle performance of the lithium-sulfur battery is improved. The sulfur content in the multi-dimensional sulfur composite material prepared by the method can be as high as 90% or above, and the initial specific discharge capacity of the composite material can reach 1290mAh / g.
Owner:CHINA AUTOMOTIVE BATTERY RES INST CO LTD
Adjusting and control method for elemental sulfur byproduct of sulfate in desulfurization and denitrification absorption liquid of flue gas
InactiveCN110064278AAvoid secondary pollutionGain economic benefitsGas treatmentDispersed particle separationFlue gasMolar concentration
The invention belongs to the technical field of flue gas purification, and discloses an adjusting and control method for an elemental sulfur byproduct of sulfate in desulfurization and denitrificationabsorption liquid of flue gas. According to the method, the sulfate and Fe(II)EDTA-NO in the desulfurization and denitrification absorption liquid of the flue gas are used for adjusting the molar concentration of Fe(III)EDTA in the absorption liquid in the biological and chemical conversion process of the sulfate and the Fe(II)EDTA-NO, a sulphide generated from biological reduction of the sulfateis completely oxidized into the elemental sulfur, the Fe(III)EDTA is reduced into Fe(II)EDTA, and the Fe(II)EDTA can return to a flue gas desulfurization and denitrification system for recycling. Theprovided method can achieve that the sulfate in the desulfurization and denitrification absorption liquid of the flue gas is completely converted into the elemental sulfur, the added Fe(III)EDTA is reduced into the Fe(II)EDTA, and the added Fe(III)EDTA can be recycled. According to the method, the sulphur resource can be recovered, secondary pollution is avoided, the economic benefit is obtained,and the method is an ideal adjusting and control method of the desulphurization byproduct in a desulfurization and denitrification technology of the flue gas.
Owner:DALIAN UNIV OF TECH
Sulfur-tolerant methanation system and method for coal-based natural gas
ActiveCN111718760ARealize comprehensive utilizationReduce trafficProductsReagentsSyngasThermodynamics
The invention discloses a sulfur-tolerant methanation system and method for coal-based natural gas, and belongs to the technical field of coal-based natural gas. Firstly, a coal gasification process combining crushed coal gasification and pulverized coal gasification is adopted, and a sulfur-tolerant methanation process combining an adiabatic reactor and a uniform-temperature reactor is used for carrying out methane synthesis on raw gas, so the effective content of methane in the synthesis gas is improved, and the reaction load of a subsequent working section is reduced; sulfide and carbon dioxide in the raw gas are removed through a conventional purification process; and finally qualified civil natural gas is produced through a deep methanation process combining the adiabatic reactor andthe uniform-temperature reactor. According to the process system, comprehensive utilization of raw coal is realized, the production load of the methanation process is effectively reduced, the sizes ofthe reactor and pipeline equipment are reduced, and the unit capacity is improved; and the strong heat release characteristic of the methanation reaction is fully utilized to produce medium-pressuresteam and high-quality supersaturated steam, so the heat in the process system is reasonably utilized, the energy consumption is reduced, and the production efficiency is high.
Owner:HUANENG CLEAN ENERGY RES INST
Curable composition and optical material comprising same
PendingCN113840861AHigh refractive indexHigh glass transition temperatureOptical partsOptical elementsRefractive indexSulfurifustis
The present invention relates to a curable composition and an optical material comprising the same, and more particularly, to a curable composition for forming a high refractive index optical material and an optical material comprising the same, the curable composition comprising an episulfide compound; sulfur-containing organic particles containing a specific content of sulfur atoms; and a reducing agent.
Owner:LG CHEM LTD
Sulfur response signal enhancement assembly of flame photometric detector and application thereof
ActiveCN111220747AHigh luminous intensityHigh sensitivityComponent separationPhotometry using electric radiation detectorsCombustion chamberSulfurifustis
The invention provides a sulfur response signal enhancement assembly of a flame photometric detector. The sulfur response signal enhancement assembly is composed of a quartz rod, a circular porous baffle, a T-shaped cylinder and a metal ring which are coaxially arranged, the metal ring sleeves the quartz rod, and the distance from the lower end of the quartz rod to a nozzle is adjusted by changingthe position of the metal ring on the quartz rod. The circular porous baffle plate of the response signal enhancement assembly is fixed between a flame photometric detector combustion chamber and anexhaust hole cover, and the circular porous baffle does not influence the emission of the gas in the combustion chamber. The response signal enhancement assembly has the following advantages that thetemperature of flame is reduced by the placed quartz rod, the light-emitting area of sulfur in the flame is increased, and then the sensitivity of sulfide detection is improved; the mechanical structure of the assembly is simple, compact and reliable; the distance from the lower end of the quartz rod to the nozzle can be adjusted by changing the position of the metal ring, thereby adjusting the contact area between the quartz rod and the flame.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Enrichment culture method of sulfur bacteria
ActiveCN112746032APromote growthIncrease growth rateBacteriaMicrobiological testing/measurementBiotechnologyThiobacillus sp.
The invention discloses an enrichment culture method of sulfur bacteria. The method comprises the following steps of (1) determining an upper limit value DOmax of the DO concentration in a culture system and a corresponding aeration rate Q; (2) determining the dissolved oxygen concentration, recorded as DOtop, of sulfur bacteria in the optimal growth state period; (3) in a sulfur bacteria culture process, when the DO concentration is increased to 30%-40% of DOmax, starting a material supplementing system; when the DO is reduced by 15-25%, stopping the material supplementing system; when the dissolved oxygen concentration is lower than 2% of DOmax and stays for 10-20 minutes, discharging part of bacteria-water mixture according to 5%-10% of the total volume of a bacteria-water mixture in the culture system; and repeating the steps until a culture process is finished. According to the method, the automatic control culture of bacterial cells can be realized, the rapid growth and propagation can be realized, the activity of the obtained sulfur bacteria is high, the rapid growth and propagation of thiobacillus of which a final product is elemental sulfur can be realized, and a new pollution source cannot be generated while sulfide pollution of a sewage treatment plant is solved.
Owner:CHINA PETROLEUM & CHEM CORP +1
Copolymerization of elemental sulfur to synthesize high sulfur content polymeric materials
ActiveUS11078333B2High sulfur contentFunction increaseCell electrodesLi-accumulatorsElastomerThermoplastic
Copolymerization of elemental sulfur with functional comonomers afford sulfur copolymers having a high molecular weight and high sulfur content. Nucleophilic activators initiate sulfur polymerizations at relative lower temperatures and in solutions, which enable the use of a wider range of comonomers, such as vinylics, styrenics, and non-homopolymerizing comonomers. Nucleophilic activators promote ring-opening reactions to generate linear polysulfide intermediates that copolymerize with comonomers. Dynamic sulfur-sulfur bonds enable re-processing or melt processing of the sulfur polymer. Chalcogenide-based copolymers have a refractive index of about 1.7-2.6 at a wavelength in a range of about 5000 nm-8μιτι. The sulfur copolymer can be a thermoplastic or a thermoset for use in elastomers, resins, lubricants, coatings, antioxidants, cathode materials for electrochemical cells, dental adhesives / restorations, and polymeric articles such as polymeric films and free-standing substrates. Optical substrates are constructed from the chalcogenide copolymer and are substantially transparent in the visible and infrared spectrum.
Owner:THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIV OF ARIZONA
Method for strengthening sulfidizing treatment of arsenic-containing wastewater by utilizing sulfur dioxide
PendingCN113443690AImprove stabilitySolve secondary pollutionWater contaminantsWater/sewage treatment by flocculation/precipitationSulfidationWastewater
The invention relates to a method for strengthening sulfidizing treatment of arsenic-containing wastewater by utilizing sulfur dioxide. The method comprises the following steps of: 1, introducing sulfur dioxide gas with a proper concentration into the arsenic-containing wastewater with a pH value of more than 3, and rapidly reducing the pH value of the wastewater; 2, when the pH value of the wastewater is lower than 3, stopping aeration with the sulfur dioxide gas, and then adding a sulfidizing agent to enable sulfide precipitates to gradually aggregate and grow; 3, introducing sulfur dioxide gas into the sulfurized wastewater in a stirring state again; and 4, filtering the treated wastewater to obtain arsenic sulfide slag, recycling the arsenic sulfide slag, and subjecting low-concentration arsenic waste liquid formed by a supernatant to deep removal of arsenic. Compared with the prior art, the arsenic removal efficiency of the wastewater can be remarkably improved, and meanwhile, the problems of acid consumption and additional waste salt generation caused by pH value adjustment of the wastewater can be solved; and the method has the good effects of recycling resources and treating the waste with the waste.
Owner:SHANGHAI JIAO TONG UNIV
Post-treatment system, desulfurization device thereof, control method and storage medium
ActiveCN113107644ANot poisonousAvoid poisoningInternal combustion piston enginesExhaust apparatusProcess engineeringSulfurifustis
The invention relates to a post-treatment system, a desulfurization device thereof, a control method and a storage medium. The desulfurization device comprises a renewable sulfur trap, a storage type sulfur trap and a first three-way valve, and the renewable sulfur trap and the first three-way valve are sequentially arranged at the upstream of a main post-treatment device along the exhaust flow direction. An inlet of the first three-way valve communicates with an outlet of the renewable sulfur trap, a first outlet of the first three-way valve communicates with an inlet of the main post-treatment device, a second outlet of the first three-way valve is connected with a bypass pipeline, and a storage type sulfur trap is arranged on the bypass pipeline. According to the desulfurization device, the toxicity to the main post-treatment device during regeneration of the renewable sulfur trap can be avoided, the regeneration interval of the renewable sulfur trap does not need to be prolonged, the volume of the renewable sulfur trap does not need to be increased, and the exhaust back pressure is not influenced during non-regeneration; and the storage type sulfur trap is only used for trapping sulfide released during regeneration of the renewable sulfur trap, so that the storage type sulfur trap is long in service life and does not need to be frequently replaced.
Owner:WEICHAI POWER CO LTD +1
Fuel oil sulfur content treatment method and related device
InactiveCN112523848AReduce failure rateReduce air volumeElectrical controlInternal combustion piston enginesCombustionExhaust fumes
Embodiments of the invention disclose a fuel oil sulfur content treatment method and a related device, which are used for conducting decomposition processing on sulfides generated by combustion of fuel oil with different sulfur contents, so that the failure probability of a catalyst in a fuel oil device is reduced. The method provided by the embodiments of the invention comprises the following steps of determining first conversion efficiency of the catalyst in the fuel oil device on NOX gas; judging whether the first conversion efficiency is smaller than or equal to a first preset value; if yes, controlling the opening degree of a throttle valve of the fuel oil device to be reduced in order to enable the amount of air entering an engine cylinder of the fuel oil device to be smaller than the amount of air needed by sufficient combustion reaction in the cylinder and the combustion reaction in the cylinder to deteriorate, and inputting a large amount of generated waste gas and residual energy into the catalyst to increase the internal temperature of the catalyst ; detecting the internal temperature of the catalyst in real time; judging whether the internal temperature of the catalystis not less than a second preset value or not at the first moment; and if not, controlling the opening degree of the throttle valve to be reduced in order to reduce the amount of air entering the engine cylinder.
Owner:GUANGXI YUCHAI MASCH CO LTD
Sulfur-modified chloroprene rubber and method for producing same, sulfur-modified chloroprene rubber composition, vulcanizate, and molded article
Provided is a sulfur-modified chloroprene rubber having a functional group A represented by general formula (A) and located at a terminal of the molecule, and a functional group B represented by general formula (B) and at a terminal of the molecule, wherein the mass ratio B / A of the content of functional group B to the content of functional group A is 12.00 or less, and the total amount of functional group A and functional group B is 0.10-1.00 mass%. (In formula (A), Ra1 and Ra2 each independently represent a hydrogen atom, a halogen atom, a hydroxy group, an alkoxy group, a carboxy group, a carboxylate group, a cyano group, an alkyl group which may have a substituent, or an arylthio group which may have a substituent, and Ra1 and Ra2 may bond with each other to form a ring which may have a substituent.) (In formula (B), Rb1 and Rb2 each independently represent an alkyl group which may have a substituent, or an aryl group which may have a substituent).
Owner:DENKA CO LTD
A post-processing system and its desulfurization device, control method and storage medium
ActiveCN113107644BNot poisonousAvoid poisoningInternal combustion piston enginesExhaust apparatusProcess engineeringEnvironmental engineering
Owner:WEICHAI POWER CO LTD +1
Sulfur-resistant methanation catalyst, preparation method and use thereof
ActiveCN107537536BHydrocarbon from carbon oxidesPhysical/chemical process catalystsPtru catalystMethanation
The invention relates to a sulfur-tolerant methanation catalyst and a preparation method thereof and mainly aims at solving the problems of low CO conversion rate and poor CH4 selectivity of the sulfur-tolerant methanation catalyst in the prior art. The problems are better solved by adopting the technical scheme that transition metal sulfides and phosphides are used as active ingredients in the sulfur-tolerant methanation catalyst, and the catalyst comprises the following components in percentage by mass: a) 5-25% of MoS2; b) 0-3.5% of Fe3P; c) 0-5% of Ni3P; and d) aluminum oxide. Compared with the traditional sulfur-tolerant methanation catalyst, the sulfur-tolerant methanation catalyst has high CO conversion rate and CH4 selectivity, is used for solving the problems of low activity and poor selectivity of the traditional sulfur-tolerant methanation catalyst and can be used for production for preparing methane by using synthesis gas.
Owner:CHINA PETROLEUM & CHEM CORP +1
A sulfur-resistant methanation system and method for coal-to-natural gas
ActiveCN111718760BRealize comprehensive utilizationReduce trafficProductsReagentsSyngasThermodynamics
Owner:HUANENG CLEAN ENERGY RES INST
Sulfur-loaded hollow nano polyhedron octasulfide nine cobalt/carbon fiber composite material and preparation method and application thereof
PendingCN114256447ALower requirementEasy to preparePositive electrodesLi-accumulatorsPolysulfideSulfurifustis
The invention provides a sulfur-loaded hollow nano polyhedron octasulfide nine-cobalt / carbon fiber composite material and a preparation method and application thereof, and the preparation method comprises the following steps: firstly growing a polyhedron ZIF-67 on a carbon fiber cloth substrate by adopting a self-template method, and then vulcanizing to obtain a Co9S8 / carbon fiber composite material. On one hand, the Co9S8 / carbon fiber composite material has a relatively large internal space inside, so that the loading quality of sulfur is ensured, and the volume expansion of a lithium polysulfide Li2Sx substance in the circulation process is buffered; on the other hand, the material can be strongly combined with polysulfide and limit outward diffusion of the polysulfide, and the porous shell is beneficial to transportation of Li < + > and electrons. And soaking the Co9S8 / carbon fiber composite material in a carbon disulfide solution of sulfur, drying, and performing sulfur fumigation to obtain the sulfur-loaded hollow nano-polyhedron octasulfide nine cobalt / carbon fiber composite material, and the carbon fiber cloth is used as a substrate, so that the overall conductivity is improved. The composite material positive electrode has high discharge capacity and high cycle stability due to the physical and chemical dual-function synergistic fixation effect.
Owner:SHANGHAI JIAO TONG UNIV
Sulfur-modified chloroprene rubber composition, vulcanized product, molded article using said vulcanized product and method for producing sulfur-modified chloroprene rubber composition
Provided is a technology for producing a sulfur-modified chloroprene rubber which has excellent compression set and excellent wear resistance, while being reduced in heat generation. Provided is a sulfur-modified chloroprene rubber composition that is obtained by having a sulfur-modified chloroprene rubber, which contains at least a sulfur-modified chloroprene polymer and an emulsifying agent, contain a sulfenamide which may have an arbitrary substituent in an amount of 0.0005-0.01 part by mass per 100 parts by mass of the sulfur-modified chloroprene rubber.
Owner:DENKA CO LTD
Breeding method and application of desulfurization strain with high sulfur oxidation performance
ActiveCN112779191AImprove processing efficiencyGood sulfur oxidation performanceBacteriaMicroorganism based processesBiotechnologyHigh concentration
The invention relates to a breeding method and application of a desulfurization strain with high sulfur oxidation performance, the breeding method is based on a plasma treatment technology, high sulfide conditions are taken as screening pressure, a plurality of complete bacterial colonies are selected by using a plate with gradient sulfide concentration, the change of the sulfur oxidation performance of each strain is investigated through culture of high-concentration sulfide, the sulfur oxidation performance of the cells is determined through a respiration determination method, and finally a target strain is screened out. According to the breeding method, the strain with good desulfurization performance and high treatment efficiency can be bred, and compared with a wild strain, the sulfur oxidation performance of the bred strain is improved, sulfate radical accumulation is remarkably reduced, and the elemental sulfur generation rate is increased, so that the system is low in energy consumption and low in operation cost, deep popularization of biological desulfurization is powerfully promoted, the robustness of biological desulfurization is enhanced, and a very valuable thought is provided for the biological desulfurization technology to deal with the problem of complex and changeable gas components in practical application.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
A kind of biological regulation preparation for polymer flooding produced water and using method thereof
ActiveCN109896637BGrowth inhibitionAvoid corrosionWaste water treatment from quariesBiocideThio-Chemolithoautotrophic Growth
Owner:CHINA PETROLEUM & CHEM CORP +1
A sulfur response signal enhancement component of a flame photometric detector and its application
ActiveCN111220747BHigh luminous intensityHigh sensitivityComponent separationPhotometry using electric radiation detectorsCombustion chamberSulfurifustis
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Polysulfide adhesive tape
InactiveCN108699407AGood oil resistanceFull adhesionPolyureas/polyurethane adhesivesOrganic non-macromolecular adhesivePolymer scienceBackbone chain
Provided is a polysulfide adhesive tape having excellent oil resistance, etc. and sufficient adhesive force. The polysulfide adhesive tape of the present invention is provided with an adhesive layer formed from a polysulfide adhesive composition including a sulfur-containing polymer. The sulfur-containing polymer has a disulphide structure represented by -S-S- in a main chain, and a tack ball number of the adhesive layer as measured by the inclined ball tack test (inclination angle of 30 degrees) defined in JIS Z 0237 at a temperature of 23 DEG C and a humidity of 65% is 2 or more.
Owner:NITTO DENKO CORP
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