11 results about "Sulfide salt" patented technology

A caustic scrubber for removing SO2 from flue gas for use in a fuel cell assembly, the caustic scrubber comprising: a caustic scrubber tower comprising a packed bed of material; a flue gas inlet configured to direct flue gas into the caustic scrubber column; a scrubber solution pump configured to pump a scrubber solution comprising NaOH and H2O2 into the caustic scrubber column; and a waste scrubber solution outlet configured to discharge a waste scrubber solution, the waste scrubber solution comprising a sulfur salt formed by a reaction between the scrubber solution and SO2 in the flue gas.

The present application relates to a kind of sulfur-dissolving composition, sulfur-dissolving agent and its application, belong to oil and gas field chemical technical field.The sulfur-dissolving composition of the present application includes high branched polymer, amino modified nanomaterial, organic amine solvent and inorganic base catalyst;The molecular chain end of the high branched polymer has at least 3 or more amino groups;The inorganic base catalyst is water-soluble sulfide salt and / or water-soluble sulfhydryl salt.The sulfur-dissolving composition of the present application has strong sulfur-dissolving capacity, and amino modified nanomaterial has selective solubility to sulfur particles, and has higher compatibility with organic amine solvent.Amino modified nanomaterial has higher specific surface area, and is dispersed in organic amine solution, to provide abundant active sites for reaction with sulfur particles, reaction area increases, and the solubility of sulfur is improved;At the same time, the strong adsorption of amino modified nanomaterial reduces the mass transfer distance between sulfur molecules, and greatly improves the solubility of sulfur.

The application discloses a geopolymer gel antique exterior wall plastering mortar and a preparation method thereof. The geopolymer gel antique exterior wall plastering mortar is composed of the following components in mass: 75-85 parts of metakaolin-based geopolymer gel; and 15-25 parts of a mixture of molybdenum sulfide salt / tungsten sulfide salt. The preparation method comprises the following steps: preparing the metakaolin-based geopolymer gel; preparing the flaky stacked mixture of molybdenum sulfide salt / tungsten sulfide salt; adding the mixture of molybdenum sulfide salt / tungsten sulfide salt into the metakaolin-based geopolymer gel; and high-speed dispersing to obtain the metakaolin-based geopolymer gel antique exterior wall plastering mortar containing molybdenum sulfide salt / tungsten sulfide salt. The mixture of molybdenum sulfide salt / tungsten sulfide salt is creatively added into the geopolymer gel, and the obtained metakaolin-based geopolymer gel antique exterior wall plastering mortar can effectively improve the mechanical properties and solve the problems of color difference and wear resistance.

The invention belongs to metal passivation, and particularly relates to a method for reducing the content of sulfur-containing inorganic salt and / or sulfur-containing organic matter in electrolytic manganese, electrolytic manganese is obtained through electrolysis, the electrolytic manganese is in contact with sulfur reduction liquid, the content of the sulfur-containing inorganic salt and / or the sulfur-containing organic matter in the electrolytic manganese is reduced, and sulfur reduction electrolytic manganese is obtained; the sulfur reduction liquid is alkali liquid with a dissolved quality improving agent and the pH value of more than or equal to 10; the upgrading agent comprises one or more of water-soluble organic amines, an organic carboxylic acid source, silicate, water-soluble zinc salt and a soluble aluminum source; the sulfur-containing inorganic salt comprises at least one of sulfate and sulfide salt. The process provided by the invention can effectively adapt to the sulfur-containing characteristic of electrolytic manganese, and can effectively remove sulfur in the electrolytic manganese.

This invention belongs to the field of nanomaterials technology, specifically, it is a method for preparing highly crystalline antimony sulfide and its application in sodium-ion batteries. This invention uses antimony oxide as the antimony source, dissolves the antimony source using sulfide salts, and obtains antimony sulfide precipitate by adjusting the pH of the solution. The specific steps include: S1, mixing the sulfide salt and antimony oxide, dissolving them in water by high-speed stirring, and adding a dispersant to obtain an antimony solution; S2, controlling the temperature of the antimony solution, adding an acid solution, adjusting the pH, and stirring the reaction to obtain a precipitate; S3, filtering the precipitate obtained in S2, washing it three times with anhydrous ethanol, and then drying it at low temperature to obtain antimony sulfide particles; calcining the antimony sulfide particles under inert gas protection to obtain highly crystalline nano-antimony sulfide. The advantages of this invention are that the prepared nano-antimony sulfide has uniform particle size, good dispersibility, and controllable morphology; the product has few impurities, high yield, and high output; the process is simple and low-cost.

The invention provides a continuous process device for preparing organic polysulfide and a preparation method, and the device comprises a feeding system used for continuously providing an inorganic polysulfide salt solution and halogenated hydrocarbon; the static mixer is communicated with the feeding system and is used for mixing the inorganic polysulfide salt solution and halogenated hydrocarbon to form a mixed material liquid; the reactor is communicated with the static mixer and is used for realizing continuous reaction of the mixed material liquid to obtain an intermediate product; the washing system is communicated with the reactor and is used for washing and desalting the intermediate product; and the evaporator is communicated with the washing system and is used for continuously removing water from the intermediate product subjected to washing desalting to obtain the organic polysulfide. According to the invention, the whole-process uninterrupted production from raw material supply to the final product is realized through continuous design, and compared with the traditional intermittent production process, the batch interval can be eliminated, the production efficiency is greatly improved, the product quality is stable and controllable, the product purity is obviously optimized, and the large-scale industrial production requirement is met.

This invention discloses a method for preparing hydrogen sulfide from sulfur through electrochemical reduction, belonging to the field of chemical technology. The method involves reacting sulfur with a solution containing sulfide salts and / or hydrogen sulfide salts to form a polysulfide solution. This polysulfide solution is then electrolytically reduced in a three-chamber solid-state electrolyte electrolytic cell to generate hydrogen sulfide gas. The method uses a three-chamber solid-state electrolyte electrolytic cell as the reactor, with electrolyte flowing into the anode chamber and the polysulfide solution flowing into the cathode chamber. An electrolysis is performed by applying a potential between the anode and cathode, and hydrogen sulfide gas is collected from the intermediate chamber. This method offers mild process conditions, enabling the directional conversion of sulfur valence states at ambient temperature and pressure, promoting the efficient utilization of sulfur resources, and producing no waste salt. It provides a feasible path for the green transformation of low-value sulfur resources into raw materials for high-end industries.

The invention discloses a sulfur-doped Prussian blue-like nano hollow box as well as a preparation method and application thereof, and relates to the technical field of material science. The preparation method comprises the following steps: S1, dissolving nitric acid transition metal salt, transition metal chloride salt and trisodium citrate in deionized water, and stirring to obtain a solution A; s2, dissolving potassium ferricyanide in deionized water to obtain a solution B; s3, mixing the solution A and the solution B, stirring, standing, and centrifugally washing to obtain the Prussian blue analogue. And S4, dispersing the obtained Prussian blue analogue in an ethanol solution, transferring into a high-pressure hydrothermal kettle, adding a certain amount of sulfide salt into the high-pressure hydrothermal kettle, putting into a drying oven, reacting at a certain temperature, naturally cooling, centrifuging to obtain a precipitate, and washing to obtain the sulfur-doped Prussian blue-like nano hollow box. According to the sulfur-doped Prussian blue-like nano hollow box as well as the preparation method and the application thereof, the photo-thermal performance and the catalytic performance of the Prussian blue-like nano hollow box are improved.

The present application provides a carbon cloth-supported heterostructured material, and a preparation method therefor and a use thereof. The carbon cloth-supported heterostructured material comprises a carbon cloth and a bimetallic sulfide salt supported on the surface of the carbon cloth. The carbon cloth has a carbon fiber conductive network, and the bimetallic sulfide salt is grown in the form of shingle-like nanosheets on the surface of the carbon fiber conductive network, so as to form a three-dimensional network structure. The metal in the bimetallic sulfide salt comprises zinc. In the material of the present application, the bimetallic sulfide salt is uniformly grown in the form of shingle-like nanosheets on the carbon fiber conductive network in the carbon cloth, the nanosheets are connected to each other and cross each other to form the three-dimensional network structure, more active sites are introduced, and the electrical conductivity is improved, thereby facilitating implementation of fast kinetics that avoids solid-state diffusion and promotes ion diffusion. The carbon cloth-supported heterostructured material of the present application can significantly improve the rate performance, specific capacity and cycle performance of a composite negative electrode.

The application discloses a copper oxide mineral flotation inhibitor and a copper oxide or copper oxide cobalt ore flotation method, and belongs to the technical field of ore dressing. The copper oxide mineral flotation inhibitor comprises sulfide salt, dithiocarbamate and cysteine, is used in a copper oxide or copper oxide cobalt ore reverse flotation system, can realize high selective inhibition of copper oxide minerals such as malachite, can ensure high efficient collection of calcium magnesium carbonate gangue minerals by a fatty acid collector, and thus calcium magnesium gangue minerals can be directly removed by reverse flotation, the recovery rate of calcium magnesium gangue minerals in froth products is above 90%, acid consumption of copper oxide or copper oxide cobalt ore concentrate leaching is greatly reduced, and production cost is greatly reduced.

The application provides a regenerated magnetic powder and a method and application of preparing the regenerated magnetic powder by a salinization-reduction diffusion method, and the method comprises the following steps: (1) mixing neodymium iron boron sludge and a solid salt agent, and performing selective salinization roasting to obtain a roasting product; (2) mixing the roasting product and a reducing agent, and performing a reduction diffusion reaction to obtain the regenerated magnetic powder; wherein the solid salt agent comprises sulfidation salt and / or nitration salt. The neodymium iron boron sludge is recycled by the salinization-reduction diffusion method, and the regenerated magnetic powder with low oxygen content and low impurity content can be obtained and can be used for preparing high-performance regenerated sintered neodymium iron boron magnets. The method is green and efficient, can effectively improve the calcium removal efficiency and the intrinsic magnetic properties of the regenerated rare earth permanent magnet material, can reduce the cost, and realizes high-value recycling and reuse.