26 results about "Sulfurifustis" patented technology

The application discloses a biological electrochemical auxiliary sulfur conversion promoting sulfur-based denitrification and sulfate emission reduction method and belongs to the field of water treatment. ‑ Nitrogen-containing wastewater enters an elemental sulfur denitrification system, and NO3 0 is reduced to N2 by sulfur autotrophic denitrifying bacteria, and elemental sulfur (S 2‑ ) is converted into SO4 2‑ . Effluent enters a cathode chamber of an electrochemical auxiliary sulfate reduction system, and hydrogen autotrophic sulfate reducing bacteria utilize cathode hydrogen production to reduce SO4 ‑ to HS 2‑ , and meanwhile, alkalinity produced by cathode hydrogen production neutralizes acidity produced in the denitrification process in the elemental sulfur denitrification system. ‑ HS 2‑ / supernatant is returned to the elemental sulfur denitrification system to react with S 0 to generate polysulfide (S n 2‑ ), S n 2‑ , which is used as an efficient electron donor to participate in denitrification, thereby significantly improving denitrification efficiency. The application does not need to add an organic carbon source, sludge production is small, high-concentration nitrogen-containing wastewater is efficiently treated, and the content of sulfate in effluent is simultaneously reduced, thereby realizing sulfur resource recycling, and the application is an economic and environment-friendly autotrophic denitrification method.

The invention discloses paracoccus versutus and an application thereof, and particularly discloses paracoccus versutus and an application thereof, the paracoccus versutus is paracoccus versutus TYWJ-2, the preservation number is CGMCC No.31068, and the paracoccus versutus is preserved in the China General Microbiological Culture Collection Center on July 2, 2024, the preservation number is CGMCC No.31068, and the preservation number is CGMCC No.31068. The address is located in Institute of Microbiology, Chinese Academy of Sciences, No.3, No.1 Yard, Beichen West Road, Chaoyang District, Beijing, and the postcode is 100101. The Paracoccus verrucosus TYWJ-2 provided by the invention has stronger desulfurization capacity and higher sulfur conversion rate, the 12h sulfide degradation rate reaches 98.1%, the sulfur generation rate reaches 76.8%, and the Paracoccus verrucosus TYWJ-2 has good biological desulfurization application potential.

The invention provides a system and a method for coupling biogas desulfurization with denitrification nitrogen removal. The system comprises a sulfur-containing biogas conveying unit, a wet desulfurization unit, an alkali liquor adding device, a first purified biogas conveying device, a dry desulfurization unit, a nitrate nitrogen wastewater conveying unit, a sulfur autotrophic nitrogen removal unit, a wet by-product conveying unit, a dry by-product conveying unit and a desulfurizing agent regeneration unit. According to the system, wet-process byproducts and dry-process byproducts are directly used for sulfur autotrophic nitrogen removal, an outsourcing sulfur source is replaced, the sulfide treatment cost is reduced, and meanwhile, alkalinity addition is reduced by utilizing alkalinity of the byproducts. The Fe-containing by-product after denitrification is subjected to chemical oxidation regeneration to regenerate the ferric iron-based desulfurizing agent, the ferric iron-based desulfurizing agent is reused for dry desulfurization, closed-loop circulation of iron elements is formed, the treatment cost of a sulfur source, alkalinity, a carbon source and the by-product is saved, and the method is suitable for cooperative treatment of biogas and tail water of a sewage treatment plant.

A method for prepanng a sulfur-rich polyethyleneimine (PEI)-based adsorbent, comprises mixing PEI, an episulfide and an organic solvent to obtain a mixture, and subjecting the mixture to ring-opening

The invention provides a low-nitrogen treatment method for sulfur recovery tail gas, and in the method, low-nitrogen treatment of the sulfur recovery tail gas is realized while the treatment efficiency of various sulfides is ensured through multi-point and multi-process low-nitrogen design.

The invention relates to a vehicle tire which contains at least in one tread a vulcanizate obtained by sulfur vulcanization of a rubber mixture which contains at least the following components: a) 50 to 100 phr of at least one styrene-butadiene rubber (SBR) and b) 2 to 30 phr of a prevulcanized rubber sealing material homogeneously distributed in the rubber mixture, comprising at least one polybutene with a chlorine content of less than or equal to 5 mg / kg.

A rubber material which is a rubber material containing a sulfur-modified chloroprene polymer, the content X (mass%) of sulfur constituting the aforementioned sulfur-modified chloroprene polymer, and the total amount Y (mass%) of a conjugated resin acid and a salt of a conjugated resin acid satisfy the following formula (A) with respect to the total amount of the rubber material being 1.00 mass% or more.13.90X - 5.10 ≤ Y...(A)

The utility model discloses a sulfur-containing sewage gasification device, which relates to the technical field of sewage treatment and comprises a stripping tower, a heat exchanger is arranged on the side surface of the stripping tower, one side of the bottom of the heat exchanger is connected with a steam distribution pipe, and the other side of the bottom of the heat exchanger is connected with an ultrasonic flowmeter through a sewage delivery pipe. Through the arrangement of the steam distribution pipe, the heat exchanger, the steam-water separator, the mixing pipe and the pipeline static mixer, part of steam which originally enters the stripping tower and is used for separating sulfide enters the heat exchanger through the steam distribution pipe, and then the steam exchanges heat with sulfur-containing sewage through the heat exchanger for preheating; the preheated steam enters a steam-water separator to separate condensate water, the separated dry steam and the sulfur-containing sewage are converged in a mixing pipe, and the sulfur-containing sewage and the steam are mixed through a pipeline static mixer; the inside of the pipeline can be cleaned to relieve blockage, the maintenance and replacement interval is prolonged, and the steam stripping separation efficiency can be improved.

The invention provides a composite material, a preparation method thereof and an aluminum-sulfur battery, and belongs to the technical field of battery materials. The composite material comprises a composite carrier and elemental sulfur loaded on the composite carrier, the composite carrier comprises a carbon carrier and a PMo12-based metal organic framework growing on the carbon carrier, and the PMo12-based metal organic framework comprises a metal organic framework with a pore structure and phosphomolybdic acid encapsulated in the pore structure. The composite material provided by the invention has excellent conductivity, high sulfur loading capacity, strong polysulfide anchoring capability and efficient sulfur conversion catalytic activity, and is beneficial to improving the cycle performance of the battery.

The application discloses a lime-sulfur solution for enhancing the effect of sulfur autotrophic denitrification and phosphorus removal and application thereof, and is characterized in that sulfur and lime are mixed according to a mass ratio of 1-2:1, then the mixture is mixed with a calcium chloride-sulfide solution with a proper concentration and heated to make the sulfur basically dissolved, so as to obtain an alkaline lime-sulfur solution; the lime-sulfur solution is added into influent of a denitrification filter according to the demand of denitrification and phosphorus removal, dissolved reduced sulfur is used as an electron donor of autotrophic denitrification, and calcium ions are used as a precipitant for phosphorus removal. In the lime-sulfur solution prepared by the application, the dissolved sulfur added into wastewater promotes the electron transfer between sulfur and microorganisms, the alkalinity of the lime-sulfur solution helps to neutralize the sulfur autotrophic acid production and stabilize the pH value at 8-9, and promotes the growth of hydroxyapatite and the removal of phosphorus.

The invention discloses extreme acidithiobacillus acidophilus based on sulfur metabolic pathway enhancement as well as a construction method and application of the extreme acidithiobacillus acidophilus. According to the invention, based on conjugational transfer, sulfide of Acidithiobacillus caldus, namely a quinone oxidoreductase SQR gene is over-expressed, a promoter Amp is adopted for starting expression, an extreme acidophilic engineering bacterium A. caldus-G-SQR is constructed, and compared with wild type A. caldus, the acid stress tolerance, sulfur oxidation capacity and intracellular ATP (adenosine triphosphate) generation capacity of the extreme acidophilic engineering bacterium A. caldus-G-SQR are all improved. The core effect of the SQR in strain environmental adaptation and metabolic regulation is fully verified.

The application discloses a coordination gradient optimized nanocage Fe monatomic-sulfur positive electrode and a preparation method thereof, which comprises a carbon-based nanocage confined Fe monatomic material with a coordination shell gradient optimized and elemental sulfur. The coordination structure of metal Fe monatomic and nitrogen in the carbon-based ZIF-8 derived nanocage is precisely controlled, and the gradient optimization design of the Fe monatomic coordination shell is realized in combination with sulfur atoms, thereby breaking the limitation of the catalytic activity of the traditional M-N4 configuration. Meanwhile, the effective regulation of the size and shell thickness of the carbon nanocage is achieved by using the dopamine coating method coupled with high-temperature pyrolysis. The material utilizes the synergistic mechanism of physical confinement and chemical anchoring, significantly enhances the adsorption and catalytic conversion capacity of polysulfides, effectively suppresses the shuttle effect, and relieves the volume expansion problem in the charging and discharging process, thereby greatly improving the oxidation-reduction reaction kinetics, cycle stability and comprehensive electrochemical performance of lithium-sulfur batteries.

The invention discloses stenotrophomonas acidaminiphila and application thereof, the stenotrophomonas acidaminiphila is stenotrophomonas acidaminiphila TYYJ-1, the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.31067, and the stenotrophomonas acidaminiphila is preserved in the China General Microbiological Culture Collection Center on June 24, 2024, and the preservation number of the stenotrophomonas acidaminiphila TYYJ-1 is CGMCC No.31067. The address is located in Institute of Microbiology, Chinese Academy of Sciences, No.3, No.1 Yard, Beichen West Road, Chaoyang District, Beijing, and the postcode is 100101. The stenotrophomonas microacidophilus TYYJ-1 provided by the invention has relatively strong desulfurization capacity and relatively high sulfur conversion rate, the 12h sulfide degradation rate reaches 99.3%, the sulfur generation rate reaches 77.9%, and the strain is facultative nutritional, can be rapidly propagated in an organic culture medium such as an LB culture medium, can increase the bacterial liquid density, and has good biological desulfurization application potential.

The present application relates to water treatment and aquaculture environmental protection technical field, and disclose a bypass sulfur cycle coupled seawater aquaculture tail water deep denitrification and phosphorus removal method and system, including main road and bypass double process: S1 solid-liquid separation obtains concentrated solid phase and main road clear liquid;S2 in bypass anaerobic reactor, concentrated solid phase organic matter is hydrolyzed and acidified, and then sulfate reducing bacteria is utilized, and reduced sulfate is generated into sulfide and releases phosphorus, and bypass fermentation liquor is obtained;S3 in side flow chemical phosphorus removal unit, reagent is added, and phosphorus precipitate is generated and recovered in a direction, and sulfur-rich supernatant is obtained;S4 in main road anoxic reactor, main road clear liquid, sulfur-rich supernatant and nitrification reflux liquid complete autotrophic denitrification;S5 in main road aerobic reactor, ammonia nitrogen is oxidized into nitrate, and part of effluent is refluxed.The present application realizes spatial decoupling of electron donor and acceptor, and double sludge age operation guarantees efficiency, and external carbon source is not needed, and denitrification and phosphorus removal and phosphorus resource recovery are realized, and the seawater aquaculture tail water quality is adapted.

The invention relates to a sulfur-crosslinkable rubber compound, its vulcanizate and a vehicle tire. The sulfur-curable rubber compound contains at least the following components: - at least one diene rubber, - at least one silica, - 1 to 30 pph of at least one silane A with the general formula AI) (R 1 ) o Si-R 2 -(SR 3 ) q -SX; AI) and - 0.5 to 30 pph of at least one silane B with the general formula BI) (R 1 ) o Si-R 2 -(SR 3 ) u -SR 2 -Si(R 1 ) o BI)

Provided is a rubber composition having excellent breaking strength. The rubber composition contains an inverse vulcanizate containing 10 mass % or more of carbon atoms and 30 mass % or more of sulfur atoms.

To solve the issue that, in producing distilled liquor, sulfur-based gases that interfere with aroma are removed by leaving the liquor to stand for several months to allow the gases to volatilize (aging), which requires a long period of time before the finished quality of the distilled liquor can be known.SOLUTION: A gas adsorption sampling container is an openable and closable sealed container including: a section for housing a gas-generating substance; a removable gas adsorbent; a section holding the gas adsorbent at a position where the section does not come into contact with the housed gas-generating substance; and a sampling port that allows the internal gas to be collected while the container remains sealed.SELECTED DRAWING: Figure 1

The invention discloses a sulfur autotrophic denitrification coupled anaerobic ammonia oxidation denitrification method and system, and belongs to the technical field of sewage treatment. According to the method disclosed by the invention, through layered culture of microorganisms in the granular sludge, sulfur autotrophic denitrifying bacteria in an outer layer are firstly denitrified by utilizing sulfides, so that a substrate is provided for anaerobic ammonium oxidation bacteria in an inner layer, and the toxic effect of the sulfides on the anaerobic ammonium oxidation bacteria is reduced. The denitrification effect and the operation stability of the coupling system are ensured. Ammonia nitrogen, nitrate nitrogen and sulfide in the wastewater are synchronously and efficiently removed; the whole process is an autotrophic process, an organic carbon source does not need to be added, and a coupling system does not need aeration, so that the energy consumption and the operation cost are remarkably reduced; according to the method, the sludge yield is low, the growth rate of sulfur autotrophic bacteria and anaerobic ammonium oxidation bacteria is low, the sludge yield is extremely low, and the sludge treatment cost is reduced.

A dynamic adjustment method for sulfur constraint boundary based on an open-loop coal blending optimization model is proposed. The objective function is to dynamically adjust the sulfur constraint boundary based on the minimum coal blending cost to meet boiler combustion requirements. The coal blending optimization model is Equation (1): In Equation (1): minf(x) is the minimum cost of coal blending; C i x is the cost of the i-th single coal; i b is the blending ratio of the i-th single coal; i ΔS represents the virtual coal coefficient and the dynamic adjustment of the sulfur constraint limit. This invention guides future coal blending based on the current combustion status of the boiler, building upon open-loop coal blending. It focuses on online monitoring of sulfur dioxide emissions and real-time load in boiler combustion. Through fuzzy modeling and adaptive decision-making, it continuously compensates for the sulfur constraint upper bound of the open-loop optimization model. By applying negative or positive biases to the sulfur constraint upper bound, it aims to reduce boiler outlet sulfide emissions or improve the economic efficiency of coal blending, thus promoting the development of closed-loop coal blending. This invention has significant foreseeable economic, social, and environmental value.

The invention relates to a sulfur-crosslinkable rubber mixture, to the vulcanisate of the rubber mixture, and to a vehicle tyre. The rubber mixture contains at least the following constituents: a) 50 to 100 phr of at least one polyisoprene, b) 0 to 50 phr of at least one butadiene rubber, where the butadiene rubber has been functionalized for binding of silica, c) 20 to 100 phr of at least one silicon dioxide of high surface area, d) 1 to 30 phr of silanes selected from at least two organosilicon compounds.

This invention discloses a method for treating blackened and odorous water bodies using a combination of sulfur autotrophic denitrification and anaerobic ammonium oxidation. The method includes: collecting overlying water and sediment samples from the blackened and odorous water body; sealing and allowing the overlying water and sediment samples to stand to obtain a treatment sample; determining the content of volatile organic sulfur compounds in the sediment sample and calculating the theoretical dosage of calcium nitrate; adding 1.0 times the theoretical dosage of calcium nitrate to the sediment of the treatment sample, and adding SAD sludge and Anammox sludge to the surface layer of the sediment; continuously operating until any day between days 20 and 30, then adding 0.3 to 0.8 times the theoretical dosage of calcium nitrate; continuing operation until days 45 to 55 to complete the water body treatment. This invention not only effectively solves the problem of water quality deterioration caused by seasonal changes but also synergistically removes NH4 from the sediment. + It contains AVS and organic matter, thereby reducing the emission of greenhouse gases such as N2O during sediment remediation.

This invention discloses a sulfur fixation method in the recycling process of sulfide-based all-solid-state batteries, belonging to the field of battery recycling technology. The method includes steps such as pinhole puncture pretreatment, preparation of a pressure cooking sulfur fixation system, pressure cooking sulfur fixation in a pressure vessel, solid-liquid separation, and reagent circulation. This invention achieves efficient sulfur fixation during the recycling of sulfide-based all-solid-state batteries, completely solving the problem of H2S toxic gas emission during recycling, eliminating safety and environmental hazards, and meeting industrial production environmental emission standards. The sulfur fixation process of this invention is highly compatible with existing wet / dry recycling processes for sulfide batteries, requiring no major modifications to existing equipment. It is simple to operate, the process is controllable, and it reduces the production cost of industrial-scale recycling. The sulfur fixation process of this invention does not introduce harmful impurities and does not affect the subsequent extraction and purification of other valuable elements such as lithium and phosphorus, ensuring the purity and quality of each recycled product.

The present invention relates to stabilized chlorinated polyvinyl chloride (CPVC) polymer formulations and stabilizers for use therein. Stabilization is achieved by using a sulfide-containing organotin species with a co-stabilizer and an organic chain extender that provides increased thermal stability over conventional organotin stabilizers.

A method for producing a cement material comprises steps of: reacting sulfur dioxide and water to form a first acid, the first acid comprising at least one sulfur-containing anion; reacting the first acid and a first cement precursor to form a second cement precursor; wherein the second cement precursor comprises the at least one sulfur-containing anion; and converting the second cement precursor to the cement material.

The invention discloses a method for strengthening accumulation of extracellular elemental sulfur by pseudomonas putida during degradation of propanethiol through gene knockout. The method comprises the following steps: by taking a propanethiol degrading bacterium Pseudomonas putida S-1 as an original strain, in a basic salt culture medium taking propanethiol as a unique carbon source, the S-1 can degrade propanethiol and generate separable extracellular elemental sulfur (sulfur balls) at the same time; extracellular sulfur ball accumulation can be enhanced by knocking out the persulfide dioxygenase coding gene in the S-1 strain, the yield of the extracellular elemental sulfur is increased by 69.2% compared with that of a wild type, and the yield of the elemental sulfur is increased while propanethiol is degraded by microorganisms.

Processes for forming sulfur polymer cathodes include heating elemental sulfur above a melting point of sulfur to form molten sulfur having linear polysulfide chains, combining the molten sulfur with a cross-linker to form a sulfur polymer mixture, depositing a film of the sulfur polymer mixture on a substrate, and cooling the film of the sulfur polymer mixture to solidify the sulfur polymer mixture into a sulfur polymer. The cross-linker is a cyclic organic vinylic monomer comprising diene groups.