45 results about "Inorganic sulfide compound" patented technology

The invention discloses a method for treating waste lye by high-temperature wet oxidation. At 220°C to 260°C and under the pressure of keeping the waste lye in liquid phase, the waste lye is contacted with air exceeding the theoretical oxygen demand, and the waste lye is used The oxygen in the air oxidizes the inorganic sulfide and organic matter in the waste caustic so that the sulfur in it is converted into sulfate, and the organic matter is oxidized and decomposed into water and carbon dioxide; the reacted material discharged from the wet liquid phase oxidation reactor enters the high-pressure gas-liquid separator , The oxidized spent lye after gas-liquid separation and the waste lye feed are exchanged for heat, and the oxidized spent lye after heat exchange and the gas phase separated from gas and liquid enter the cooling and washing tower. Compared with the prior art, the method of the present invention has low energy consumption, the removal rate of S2- can reach 100%, the removal rate of COD can reach 75%-85%, and the waste lye after treatment can be directly discharged into the sewage treatment system, effectively alleviating the The pressure brought by the high concentration of wastewater in sewage treatment plants.

Trace element levels of mercury in crude oil are reduced by first passing the crude oil through a filtration device to generate filtered crude having a reduced concentration of mercury and a reject stream having a concentrated mercury level. In one embodiment, the filtration device is back-flushed to generate the reject stream. In another embodiment, the reject stream comprises a portion of the retentate from a cross-flow filter device. The reject stream is treated with an extractive agent selected from tetrakis(hydroxymethyl)phosphonium sulfate; tetrakis(hydroxymethyl) phosphonium chloride; an oxidizing agent; an organic or inorganic sulfidic compound to extract a portion of the mercury into a water phase for subsequent removal. In one embodiment, the extractive agent is a reductant to convert non-volatile mercury into volatile mercury.

The invention provides a quick impurity removing method for the rare earth leach liquor of weathering crust elution-deposited rare earth ores, and aims to solve the problems that the content of metal ions of impurities in the leach liquor of the weathering crust elution-deposited rare earth ores is high, a conventional impurity removing method is longer in process flow and complicated in operation, the precipitation and sedimentation speed of generated flocculated impurities is lower, and the quantity of adsorbed and carried rare earth is large. The method specifically comprises the following steps of (1) directly adding a mixed solution of ammonium hydrogen carbonate and inorganic sulfide into the rare earth leach liquor; (2) adding ammonia water or sulfuric acid to adjust the pH value of the mixed solution; (3) under the condition of stirring, adding a flocculating agent solution into the mixed solution, continuously stirring for 1h to 3h, then standing for sedimentation, and extracting supernatant liquor to obtain low-impurity rare earth leach liquor. According to the method, the sedimentation time of the impurities can be effectively shortened, the production efficiency is greatly improved, quick and full sedimentation of the impurities can be achieved, the rare earth of the obtained low-impurity rare earth leach liquor is high in recovery rate and high in purity, and the method is suitable for popularization and application.

The invention discloses a sulfide composite electrolyte with toughened polymer conductive fiber and application thereof in a room temperature all-solid-state lithium battery. By bionic-simulating thetoughening behavior on the bamboo by the bamboo fiber in the natural world, compounding one-dimensional nanometer polymer lithium ion conductive fiber in a sulfide inorganic fast ion conductor, wherein the fiber length is 1-1000 microns, and diameter is 10-1000nm, arranging the fibers in parallel according to the same direction, wherein the conductive fibers are uniformly distributed on the surface or in the composite structure. This structure improves the capacity for defensing the stress deformation of the sulfide inorganic fast ion conductor, the breaking strength of the inorganic sulfide fast ion conductor is improved to 1.2-1.4MPam1/2 from the situation of not greater than 0.70MPam1/2. The invention further discloses all-solid-state lithium battery assembled by the composite electrolyte structure.

The present invention is converting and absorbing fine desulfurizer and its preparation. The present invention features that the fine desulfurizer consists of Co 0.01-0.2 wt%, Mo 0.01-0.2 wt%, Cu 1-15 wt%, Zn 1-10 wt%, K 0.1-5 wt% and manganese ore 70-95 wt%, and is prepared with manganese ore bar as carrier and Co(Ac)2, (NH4)6Mo7O24, Cu(NO3)2, Zn(NO3)2 and KNO3 as precursors, and through precipitation process. The fine desulfurizer is suitable for fine eliminating organic sulfide and inorganic sulfide from natural gas, semiwater gas, coke oven gas, petroleum cracking gas, etc. to result in high desulfurizing precision and total outlet sulfur content lower than 0.1 ppm. The fine desulfurizer has high heat stability, high conversion rate, long service life and other advantages.

The invention discloses a method for recovering sulphur in an acidic gas. The method comprises the following steps of: carrying out hydrogenating hydrolysis on organic sulphur in the acidic gas by a catalytic hydrogenation reaction to obtain an inorganic sulphide, catalytically oxidizing the inorganic sulphide to obtain sulphur, then cooling and condensing the reaction gas after the catalytic oxidation to separate liquid-state sulphur, then washing and absorbing the residual sulphide in the tail gas after sulphur separation by alcohol-containing washing solution from low-temperature methanol washing, so as to realize complete recovery for sulphur. The invention further discloses a device used for realizing the method aforementioned and a reactor. The process, device and reactor disclosed by the invention are suitable for sulphur recovery for the acidic gas with a low-concentration H2S content, and the tail gas after desulfurization is washed and treated by virtue of alcohol-containing solution in a low-temperature methanol washing process, thus reducing the content of sulphides in the tail gas and protecting environment; meanwhile, the reactor disclosed by the invention is simple and reasonable in structure, and capable of saving equipment floor space and reducing project investment.

The invention relates to bacillus cereus and application thereof in oxidizing inorganic sulfide, which belong to the technical fields of biology and environment protection. The invention discloses an inorganic sulfide-oxidizing bacterium, which is classified and named as Bacillus cereus ZJNB-B3, and preserved in China Center for Type Culture Collection with the preservation number of CCTCC NO: M2016337. The bacterium has a higher oxidizing ability on reduced state inorganic sulfide. The bacillus cereus provided by the invention can tolerate a natural environment with the pH ranging from 4.5 to 9.1, can be applied in desulfuration innocent treatment of natural biological desulfurization systems with mild conditions, such as malodorous hydrogen sulfide gas generated by livestock slaughter processing and feed fish meal processing.

A method of making a golf ball comprising the steps of providing a preform comprising an uncured polybutadiene composition; coating the preform with a cure-altering material comprising an organosulfur compound, an inorganic sulfide compound, or a metal-containing organosulfur compound; curing the coated preform at a predetermined temperature to form a crosslinked golf ball core having an outer surface having a first hardness and a geometric center having a second hardness greater than the first to define a negative hardness gradient; and forming a cover layer about the core to form the golf ball.

The invention discloses a process of using diesel alkaline dregs wastewater as diesel alkaline washing, which solves that problems of serious wastewater pollution and complex disposal process; the process includes the steps as follows: the diesel alkaline dregs wastewater is fed into a storage tank; the solid wastes are discharged after the sedimentation through the standing for 1-8 hours; the compression air is fed from the bottom of the storage tank to enable the alkaline dregs to be mixed with the air sufficiently so that the organic or inorganic sulfides are transformed into sulfates through oxidation; and then 1-5ppm of polyacrylamide with the molecular weight of 0.01-0.02 million is added to be mixed evenly with the sulfates according to the weight of the saline; and then NaOH is added to obtain the 3% NaOH solution which contains Na2SO4 and is circulated for the alkaline process.

The invention discloses a method for synthesizing a thiobenzamide derivative through CO2 regulation and control of substituted benzonitrile. The method comprises the following steps: taking the substituted benzonitrile as a raw material, an inorganic sulfide as a sulfur source and CO2 as an auxiliary agent for reacting in the presence of a reaction solvent, and concentrating and purifying a reaction solution to obtain the thiobenzamide derivative. The reaction system disclosed by the invention is relatively simple, other catalysts are not added outside a reactant and the inorganic sulfide, themethod is suitable for synthesis of high-additional-value thiobenzamide containing a plurality of substituent groups, the reaction is carried out at low temperature and low pressure, and the risk coefficient is reduced.

The invention discloses a method for removing nano-silver in water. The method comprises steps as follows: an inorganic sulfide solution is mixed with nano-silver-containing water, and a mixed solution is obtained; the mixed solution after reaction is filtered by a biological membrane, and treatment of the nano-silver-containing water is finished. The method has the advantages that the operation is simple, utilized reagents are simple and available, the application is wide, the practicability is high, the removing effect is good and the like.

The invention discloses a method for synthesizing a benzothiazole-2-ketone derivative from carbonyl sulfide and disulfide as raw materials. The method comprises the following steps: mixing disulfide,inorganic sulfide and an organic solvent, introducing sufficient COS to implement a reaction, and concentrating and purifying a reaction liquid, thereby obtaining the benzothiazole-2-ketone derivative. The inorganic sulfide used in the method is adopted as an activation catalyst and is low in price and easy to obtain; a catalysis system is relatively simple, and no other catalyst promoter is addedexcept reactants and inorganic sulfide; direct dehydration is implemented in the reaction process, no other dehydration agent is used, and thus the atom economy is improved; the catalysis system is good in applicability, is applicable to synthesis of fine chemicals with high additional values, and is very good in substrate applicability to each fine chemical with high additional values; reactionsare implemented at normal temperatures, normal pressure or low pressure, and thus danger coefficients can be reduced; the reaction time is short, and the efficiency can be improved.