6414 results about "Inorganic sulfide" patented technology

Sorbents for removal of mercury and other pollutants from gas streams, such as a flue gas stream from coal-fired utility plants, and methods for their manufacture and use are disclosed. The methods include mixing sorbent substrate particles with a sulfide salt and a metal salt to form a metal sulfide on the outer surface of the sorbent particles.

A zinc ion-exchanging battery device comprising: (A) a cathode comprising two cathode active materials (a zinc ion intercalation compound and a surface-mediating material); (B) an anode containing zinc metal or zinc alloy; (C) a porous separator disposed between the cathode and the anode; and (D) an electrolyte containing zinc ions that are exchanged between the cathode and the anode during battery charge/discharge. The zinc ion intercalation compound is selected from chemically treated carbon or graphite material having an expanded inter-graphene spacing d₀₀₂ of at least 0.5 nm, or an oxide, carbide, dichalcogenide, trichalcogenide, sulfide, selenide, or telluride of niobium, zirconium, molybdenum, hafnium, tantalum, tungsten, titanium, vanadium, chromium, cobalt, manganese, iron, nickel, or a combination thereof. The surface-mediating material contains exfoliated graphite or multiple single-layer sheets or multi-layer platelets of a graphene material.

The invention provides a method for preparing hydrogen and LNG from coke oven gas. The method comprises the following steps: electric decoking; boosting of the coke oven gas by a compression system; cooling of the raw gas coke oven gas by using the BOG gas (the BOG gas is a gas formed after the passive heating gasification of LNG) of LNG in order to further remove tar, benzene, naphthalene and like substances in the coke oven gas; and pretreatment using a TSA process to finely remove macromolecular impurities, such as tar, benzene, naphthalene and the like; wet and dry two-stage desulfurization for removing sulfides in the coke oven gas; two-stage low pressure shifting for a reaction of CO and water vapor to form CO2 and hydrogen; and pressurization using a compressor, an MDEA solution process for removing carbon dioxide, a membrane separation technology for separating hydrogen and methane, separation, concentration and purification of the hydrogen and methane, and dehydration, demercuration and liquefaction of the separated high-concentration methane to obtain the LNG. The coke oven gas is finally converted into the hydrogen and the LNG which have high values, so the energy of thecoke oven gas is fully used, and the environment is protected.

A golf ball has a cover member and a core member. The cover member contains: 3 to 30 parts by weight of a thermoplastic elastomer containing polyamide; 5 to 50 parts by weight of a terpolymer ionomer containing ethylene, (meth)acrylic acid, and (meth)acrylic ester; 30 to 80 parts by weight of a copolymer ionomer containing ethylene and (meth)acrylic acid; and 1 to 20 parts by weight of an epoxidized-diene-based block copolymer. The core member is formed by vulcanizing a rubber composition containing: 100 parts by weight of a base rubber, A parts by weight of an alpha, beta-unsaturated carboxylic acid or a metal salt thereof, B parts by weight of an organic peroxide, and C parts by weight of a sulfide where A, B, and C satisfies the relationship:andA lies in the range from 25 to 45.

The invention discloses a method for using low-temperature plasma to prepare a supported metal sulfide catalyst and belongs to the technical field of material science. The method is characterized by including: allowing ionization of hydrogen sulfide gas or gas containing hydrogen sulfide through gas discharge to form the low-temperature plasma distributed evenly, and using the low-temperature plasma to interact with supported metal salt precursor to generate metal sulfide. Due to the fact that the catalyst is avoided from being exposed in excessively high temperature, the prepared catalyst is free of thermal agglomeration, so that the catalyst is smaller in particle size and higher in dispersity. The method is suitable for preparation of various sulfide catalysts, metal sulfide can be supported on different materials to prepare various supported catalysts. The method has the advantages of low reaction temperature, low energy consumption, short preparation time and the like. In addition, processing objects are common metal salt, wide involve range is achieved, and the prepared catalyst is applicable to various common heterogeneous reactions.

The present invention is directed to a contaminant removal agent comprising a polyvalent metal sulfide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate such as a zeolite. The agent removes mercury from process streams. The ion exchange to deposit the polyvalent metal on the substrate is preferably performed at a pH above the pH_ZPC.

Alkali metals and sulfur may be recovered from alkali polysulfides in an electrolytic process that utilizes an electrolytic cell having an alkali ion conductive membrane. An anolyte solution includes an alkali polysulfide and a solvent that dissolves elemental sulfur. A catholyte solution includes alkali metal ions and a catholyte solvent. Applying an electric current oxidizes sulfur in the anolyte compartment, causes alkali metal ions to pass through the alkali ion conductive membrane to the catholyte compartment, and reduces the alkali metal ions in the catholyte compartment. Sulfur is recovered by removing and cooling a portion of the anolyte solution to precipitate solid phase sulfur. Operating the cell at low temperature causes elemental alkali metal to plate onto the cathode. The cathode may be removed to recover the alkali metal in batch mode or configured as a flexible band to continuously loop outside the catholyte compartment to remove the alkali metal.

The invention relates to a high temperature resistant anticorrosion coating based on graphene and a preparation method thereof. The high temperature anticorrosion coating comprises the following components by the mass percentage: 5-60% of epoxy resin, 3-30% of polyphenylene sulfide resin, 3-30% of amino resin, 1-10% of a pigment, 1-20% of graphene, 3-50% of n-butyl alcohol, 0.1-0.3% of a defoaming agent, 0.1-10% of polyhydroxy acid sodium salt, 0.1-5% of benzenedicarboxylic acid dibutyl ester, 0.5-1.0% of bentonite, and 0.2-0.5% of a leveling agent. Compared with the prior art, the prepared coating has the advantages of quite excellent waterproof and anticorrosion performance, high temperature resistance, weather resistance, alkali resistance, impact resistance, artificial aging resistance and the like, and the preparation method has the advantages of good controllability, simple operation, low production cost, and easy industrialized production.

A method for capturing and reducing the mercury content of an industrial flue gas such as that produced in the combustion of a fossil fuel or solid waste adds a chelating agent, such as ethylenediaminetetraacetic acid (EDTA) or other similar compounds like HEDTA, DTPA and/or NTA, to the flue gas being scrubbed in a wet scrubber used in the industrial process. The chelating agent prevents the reduction of oxidized mercury to elemental mercury, thereby increasing the mercury removal efficiency of the wet scrubber. Exemplary tests on inlet and outlet mercury concentration in an industrial flue gas were performed without and with EDTA addition. Without EDTA, mercury removal totaled 42%. With EDTA, mercury removal increased to 71%. The invention may be readily adapted to known wet scrubber systems and it specifically provides for the removal of unwanted mercury both by supplying S2- ions to convert Hg2+ ions into mercuric sulfide (HgS) and by supplying a chelating agent to sequester other ions, including but not limited to Fe2+ ions, which could otherwise induce the unwanted reduction of Hg2+ to the form, Hg0.

A process for removing hydrogen sulfide, other sulfur-containing compounds and/or sulfur and mercury from a gas stream contaminated with mercury, hydrogen sulfide or both. The method comprises the step of selective oxidation of hydrogen sulfide (H₂S) in a gas stream containing one or more oxidizable components other than H₂S to generate elemental sulfur (S) or a mixture of sulfur and sulfur dioxide (SO₂). The sulfur generated in the gas stream reacts with mercury in the gas stream to generate mercuric sulfide and sulfur and mercuric sulfide are removed from the gas stream by co-condensation.

The invention discloses a sulfide coated particle as well as a preparation method and an application thereof. The sulfide coated particle comprises a core and a shell coating the core, wherein the core is prepared from at least one of metal, oxide, metal hydroxide, metal inorganic salt, elemental carbon or oxysome thereof, carbide, nitride, semiconductor and organic matter; the shell is prepared from metal sulfide. The to-be-coated core is mixed with the metal salt, a reducing agent and a sulfur source with a liquid phase method, metal sulfide is precipitated to the particle surface through in-situ reduction, and uniform, continuous and controllable coating of the core surface with metal sulfide is realized. The coating method is simple, reaction conditions are mild, universality is high,a coating layer is controllable in thickness, complete and uniform, and the sulfide coated particle has quite broad practical application prospect in the fields of electrocatalysis, lithium ion batteries, biomedicine and the like.

A composite characterized by comprising an aluminum alloy shaped item having a surface roughness of 5 to 50 μm or more, the surface provided with 1 μm or less fine depressions or protrusions, and a thermoplastic resin composition composed mainly of a polyphenylene sulfide or polybutylene terephthalate resin whose average of lengthwise and crosswise linear expansion coefficients is in the range of 2 to 4×10⁻⁵° C.⁻¹, the thermoplastic resin composition penetrating and anchored in the depressions or protrusions. The thermoplastic resin composition is not easily detached from the aluminum alloy shaped item. Thus, in, for example, electronic equipments and household electrical appliances, the advantage of metallic cage body can be reconciled with the advantage of synthetic resin structure. This composite can ensure high production efficiency and is suitable for mass production. Further, morphology and structure designing thereof can be accomplished freely.

A method and apparatus for treating wastewater streams by adding, either separately or as a mixture, a nitrate containing compound and an alkaline material in an amount sufficient to achieve a lower concentration of atmospheric hydrogen sulfide and dissolved sulfides downstream of the addition as compared to the atmospheric hydrogen sulfide and dissolved sulfides present in the wastewater stream prior to the addition. By adding alkaline material in addition to a nitrate containing compounds, the amount of nitrate containing compound added can be reduced by at least 10% as compared to the amount of nitrate that would theoretically need to be added in the absence of alkaline material to achieve a comparable lower concentration of atmospheric hydrogen sulfide and dissolved sulfides in the wastewater stream.

Chlorine and sulfide species are separately introduced to a flue gas passing through a scrubber in order to remove the elemental and oxidized mercury from the gas through the precipitation of mercuric sulfide at near 100% efficiency.

Methods of manufacturing bentonite sorbents for removal of pollutants including mercury from gas streams, such as a flue gas stream from coal-fired utility plants are disclosed. The methods include mixing bentonite sorbent particles with a sulfide salt and a metal salt to form a metal sulfide on the outer surface of the bentonite sorbent particles.

The invention discloses 2-pyridine-oxyl(sulfide) benzoyloxy enoates compound with general formula(I, II); wherein X is H or S; R1 is H, halogen, or 4,6- dimethoxy pyrimidine-2- radicel or one of the following groups; methyls on N-O bonds and double bonds are in maleinoid form or anti form; R2,R3,R4,R6,R7 are selected from H or alkyl from C1-C6; R5 is alkyl from C1-C6, alcoxyl-alkyl from C2-C6, alkenyl from C3-C6 or alkynyl from C3-C6; radicals of R6 and R7 are in maleinoid form or anti form; R8 is alkyl from C1-C6, alkenyl from C3-C6 or alkynyl from C3-C6. The compound (I, II)is of activity in weeding and is safe to crops like soybean, cotton, earthnut, cole, corn, etc.

The invention is a technique for strongly integrating a galvanized steel sheet and a resin molded article. A hot-dip galvanized steel sheet “Z18” is immersed in an aqueous solution for aluminum degreasing at 75° C. for 7 minutes, to form roughness having an RSm of 0.8 to 2.3 μm and an Rz of 0.3 to 1.0 μm on the surface. The surface is covered with convex protrusions having a diameter of about 100 nm, and a chromate treatment layer appears in the surface. In other words, three conditions suitable for bonding are satisfied thereby. A resin composition comprising 70 to 97 wt % of polyphenylene sulfide and 3 to 30 wt % of a polyolefin resin is injected onto the surface. The resin composition penetrates into ultra-fine irregularities and is cured in that state, whereby a composite in which the galvanized steel sheet and the resin molded article are strongly integrated is obtained. The shear rupture strength of the composite is extremely high, in excess of 20 MPa.