334 results about "Organic sulfide compound" patented technology

The invention provides a process method for making hydrodesulfation and alkene reduction on the bad gasoline, like all-fractional FCC gasoline, etc. Under the conditions of hydrogen gas existence and temperature gradually rising, to contact with three catalysts forms three reaction regions. The first reaction region has lower temperature and uses hydrofining catalyst and mainly eliminates di-alkene in the gasoline; the second reaction region has higher temperature and uses selective hydrodesulfation catalyst and mainly eliminates organic sulfide and some alkenes; the third reaction region has the highest temperature, uses gasoline modifying catalyst and makes the modifying reactions including aromatization, isomerization and benzene alkylation, increasing octane number of gasoline and improving product quality. It has the advantages of simple flow, being easy to operate, fully using reaction heat, prolonging the operating cycle of catalyst, high liquid yield, low hydrogen consumption.

The invention discloses a carbon fiber surface modification method, and relates to a carbon fiber modification method. The invention solves the problem of the uncontrollability of the distribution and arrangement of a carbon fiber surface functional group, which is not propitious to the study of the mechanism of a carbon fiber interface. The carbon fiber is plated with silver after surface pre-processing, then the carbon fiber with the silver-plated surface is infused in the dilute solution of thiol molecule containing sulfur element; depending on the coactions of the bonding reaction of sulfur atoms and metb and the force among self-assembly molecules, the thiol molecule has chemical absorption on the fiber surface and forms a closely arranged and ordered two-dimensional self-assembly single molecule membrane; two procedures are as follows: 1. the chemical plating of silver on the carbon fiber surface; and 2. the self assembly of molecules of organic sulfide on the silver-plating carbon fiber. The carbon fiber surface modification method has the advantages of realizing controllable, directional and ordered arrangement on the carbon fiber surface functional group from the molecule level, thus being beneficial to the study of the mechanism of the carbon fiber composite material interface.

The invention belongs to the technical field of hydrofining catalysts, and particularly relates to a hydrofining catalyst carrier and a preparation method thereof as well as a hydrofining catalyst using the carrier and a preparation method of the hydrofining catalyst. The preparation method of the carrier comprises the steps of: mixing modified diatomite, alumina powder, a bonding agent and a pore-enlarging agent, then kneading and forming, drying and roasting to obtain the carrier, and is characterized in that the modified diatomite is prepared by steeping diatomite in alkali liquor and neutralizing in acid liquor and then carrying out water washing and filter pressing, wherein the amount of impurities on the surface and in pore spaces can be greatly reduced, thereby being beneficial to load of active ingredients; and the hydrofining catalyst prepared by using the carrier is applicable to removal of organic sulfides and unsaturated hydrocarbons in light naphtha, liquefied gas, natural gas and oil refining dry gas.

Attrition resistant, sorbent compositions for the removal of elemental sulfur and sulfur compounds, such as hydrogen sulfide and organic sulfides, from cracked-gasoline and diesel fuels are prepared by the impregnation of a sorbent support comprising zinc oxide, expanded perlite, and alumina with a promoter such as nickel, nickel oxide or a precursor of nickel oxide followed by reduction of the valence of the promoter metal in the resulting promoter metal sorbent support composition. Also disclosed is a composition comprising desulfurized, cracked-gasoline wherein the desulfurized cracked-gasoline comprises less than about 1 ppmw thiol compounds and less than about 1 ppmw tetrahydrothiophene compounds.

A process for deeply hydrorefining poor-quality gasoline includes such steps as removing biolefine from FCC full-fraction gasoline at lower temp, and modifying (arylisomerizing) and hydrodesulfurizing at higher temp. The hydrodesulfarizing catalyst is the hydrorefining catalyst containing copper oxide and/or zinc oxide.

The invention discloses a treatment method for stinky waste gas containing sulfides and hydrocarbons. The sulfides in the waste gas comprise hydrogen sulfide and organic sulfides. A combined treatment process of solvent absorption and alkali liquor absorption is adopted in the waste gas treatment; the absorption solvent adopted in the solvent absorption process is crude diesel oil fraction; the crude diesel oil fraction solvent is cooled to the temperature of between 10 DEG C below zero and 30 DEG C, then enters an absorption tower, and is in countercurrent contact with the stinky waste gas to absorb the hydrocarbons and the organic sulfides therein; the rich absorption solvent discharged from the absorption tower is not regenerated and directly enters a diesel oil hydro-treating device; and the gas phase discharged from the absorption tower enters an alkali liquor absorption device to absorb the hydrogen sulfide and the organic sulfides therein, and is finally emptied through an exhaust tube. The method has the advantages of simple flow, low cost, stable treatment effect and the like.

The invention discloses a Znln2S4 nanometer material and synthesizing method and application, which is characterized by the following: adopting bivalent zinc salt, trivalent indium salt and organic sulfide as raw material; proceeding solvent heating or water heating reaction at 100-220 deg.c in the sealing reactor; setting surface activist as addictive; synthesizing Znln2S4 nanometer pipe, nanometer band and nanometer line selectively through controlling solvent kind, reacting temperature and reacting time. The invention belongs to layer-shaped hexagonal crystal phase with kind's direction of specific property, which is fit for relative domains of solar battery, optical catalyst, high-energy battery, and heat-conversion.

A process for hydromodifying the poor-quality gasolinge(full-fraction FCC gasoline) features that under existence of H2 and in the condition that the temp is gradually raised, said gasoline is in contact with three catalysts to form 3 reaction regions. In the first low-temp region, the hydrorefining catalyst is used for removing biolefine. In the second higher-temp region, the modifying catalyst is used for increasing octane value and quality. In the third high-temp region, the selective hydrodesulfurizing catalyst is used for removing organic sulfide.

The invention relates to an organic sulphur hydrogenation catalyst, comprising specific parts by weight of Al2O3 carrier, ZnO, iron oxide and molybdenum oxide. ZnO added in the hydrogenation catalyst disclosed by the invention is taken as an assistant, and has excellent synergistic effect together with active components of iron oxide and molybdenum oxide. Compared with the sulphur hydrogenation catalyst in the prior art, the organic sulphur hydrogenation catalyst has high thiofuran conversion and removal efficiency when used for removing organic sulfide such as thiophene in gas.

The invention relates to a preparation method of copper, cobalt and sulfur micropowder. The copper, cobalt and sulfur micropowder is copper, cobalt and sulfur ternary composite sulfide CuCo2S4 solid powder, the color is black brown or black, the shape is amorphous or in cubic crystalline phase, the powder dimension is 10<-5> to 10<-8>m; the preparation method is as follows: divalent copper salt, divalent cobalt salt and an organic sulfur compound are synthesized by a one-step hydrothermal method. The preparation method is simple and is easy to realize industrial production, the prepared copper, cobalt and sulfur micropowder has excellent electrochemical properties, higher specific capacity and good cycle stability.

A process for preparing ultralow-sulfur diesel oil includes mixing refined low-sulfur diesel oil with phase-transfer catalyst and aqueous solution of hydrogen peroxide, stirring, reaction for converting the organic sulfide to sulfone and/or sulfoxide, recovering phase-transfer catalyst, removing excessive hydrogen peroxide, selectively removing sulfone and/or sulfoxide by polar solvent, and adsorption. The final sulfur content is lower than 10 ppm (even up to 0 ppm).

Attrition resistant, sorbent compositions for the removal of elemental sulfur and sulfur compounds, such as hydrogen sulfide and organic sulfides, from cracked-gasoline and diesel fuels are prepared by the impregnation of a sorbent support comprising zinc oxide, expanded perlite, and alumina with a promoter such as nickel, nickel oxide or a precursor of nickel oxide followed by reduction of the valence of the promoter metal in the resulting promoter metal sorbent support composition.

The present invention discloses one kind of gas desulfurizing absorption liquid and its desulfurizing method. The gas desulfurizing absorption liquid has nanometer alpha- or gamma-ferric oxide and iron chelate as catalyst. In the presence of organic compound and alkali compound and light irradiation, air is introduced and the absorption liquid absorbed inorganic and/or organic sulfide are oxidized into simple substance sulfur. The gas desulfurizing method of the present invention has the advantages of low catalyst consumption, fast regeneration of catalyst, no jamming of the absorption tower, etc.

The present invention is method of adding one kind of secondary amine and one kind of organic amine with steric effect into water or sulfolane solution of N-methyl diethanolamine to obtain the activator for removing H2S from gas mixture with or without CO2. The present invention provides two solution recipes. The recipe I for the solution suitable for removing H2S from gas mixture containing no or less organic sulfide consists of N-methyl diethanolamine 30-50 wt%, secondary amine 1-10 wt%, steric amine 1-15 wt% and water for the rest. The recipe II for the solution suitable for removing H2S from gas mixture containing organic sulfide consists of N-methyl diethanolamine 30-40 wt%, secondary amine 1-5 wt%, steric amine 1-15 wt%, water 5 wt% and sulfolane for the rest.

The invention discloses a rechargeable aluminum-sulfur battery and a preparation method thereof. The rechargeable aluminum-sulfur battery is prepared by adopting metallic aluminum or aluminum alloy, preferably foamed aluminum as cathode, polymeric organosulfides as anode active substances, and halogenated aluminic acid ionic liquid formed by halogenated aluminum with any one of quaternary ammonium salt, quaternary phosphor salt or quaternary sulfosalt as electrolyte. The rechargeable aluminum-sulfur battery has high energy density, good circulation performance, safety and environmental protection, no pollution in preparation process, low cost and simple technique, thus having good application prospect.

The invention discloses an adsorbent for removing sulfur from cracked gasoline and diesel fuel. The adsorbent comprises the following components: 1) a silicon oxide source which at least contains mica, 2) a stannic oxide adhesive, 3) oxide(s) of one or more metals selected from IIB, VB and VIB, and 4) at least one accelerator metal selected from cobalt, nickel, iron and manganese. The adsorbent has good wear-resistant strength and desulfurization activity, and can be used for removing elemental sulfur and sulfides such as hydrogen sulfide and organic sulfide from the cracked gasoline and the diesel fuel.

The invention discloses a purification method of a sulfur-containing organic waste gas. The method comprises the following steps: firstly, washing and pre-treating the waste gas with alkali liquor so as to remove hydrogen sulfide in the waste gas; secondly, washing with sump oil to remove organic sulfide and hydrocarbon contaminants in the waste gas; and finally, performing catalytic combustion to completely remove hydrocarbon contaminants in the waste gas, thereby ensuring that the waste gas meets the emission standard. The waste gas is the organic waste gas which is high in sulfur content and is discharged from a sour water tank or alkaline residue tank of a petrochemical enterprise. The method provided by the invention is economical and can be used for removing various harmful substances in the waste gas; and the method has the advantages of short process flow, simplicity, lower equipment investment and operating cost, complete removal of contaminants, no secondary pollution and the like.

A positive electrode for lithium secondary battery includes a collector obtained by forming a carbonaceous material film on the surface of a conductive substrate, and a positive electrode material layer carried on the carbonaceous material film side of the collector and containing an organic sulfide compound as a main active material.

The invention discloses a combined treatment method for waste gas containing sulfur compounds. The method comprises the following steps of: mixing the waste gas containing the sulfur compounds and air, delivering the preheated gas to a catalytic incineration reactor, and performing catalytic incineration operation at the temperature of between 150 and 450 DEG C under the conditions that the space velocity is 1,000 to 35,000h<-1> and the peroxide coefficient is 0.5 to 8.0; delivering the flue gas formed after catalytic incineration to an absorption tower after heat exchange and cooling, discharging the desulfurized and washed purified flue gas, delivering the desulfurized and washed slurry to a regeneration tank provided with a stirring device, performing regeneration reaction on the slurry and regeneration alkali, delivering the reaction product to a sedimentation tank, overflowing the clarified liquid in the sedimentation tank to a pre-pumping tank, recycling the alkali supplemented clarified liquid to a desulfurization tower, and regularly clearing the settled calcium sulfite, calcium sulfate and calcium carbonate. By the method, hydrogen sulfide and organic sulfides in the waste gas containing the sulfur compounds can be efficiently converted into sulfur dioxide, and the sulfur dioxide is recycled.

The invention relates to a garlic oil cyclodextrin or cyclodextrin derivative inclusion compound, and a preparation method thereof. Garlic oil is an organic sulfide extracted from garlic and has the functions of resisting bacteria, diminishing inflammation, improving organism immunity, preventing and treating cardiovascular system diseases, and the like. Garlic oil has aroma and hot taste similar to fresh garlic, is integral in flavor, pure natural, safe and healthy, and is widely applied to salty food additives, health-care food, edible blend oil and the like, but as the garlic oil is unstable in properties, strong in volatility and acrimony and difficult to dissolve in water, the application of the garlic oil to food is greatly limited. The preparation method applies cyclodextrin and cyclodextrin derivatives to the inclusion of garlic oil so as to prepare the garlic oil cyclodextrin or cyclodextrin derivative inclusion compound, solves the problems that the garlic oil is low in water solubility, strong in acrimony and the like, and enables the garlic oil to be directly applied to food and health care products.

A process for adsorptive desulfurization of gasoline or diesel oil or aromatics lower than C₁₂ containing organic sulfide impurities, wherein these feedstocks contact an amorphous alloy adsorbent comprising nickel as a major active component in a fluidized bed reactor or a magnetic-stabilized fluidized bed reactor or a slurry bed reactor. There is only a single diffuse peak at 2θ=45° in the 2θ range from 20° to 80° in the X-ray diffraction (XRD) pattern of the adsorbent. The adsorbent consists of 50-95 wt % of nickel, 1-30 wt % of aluminum, 0-35 wt % of iron, and 0-10 wt % of one or more metals selected from copper, zinc, molybdenum, chromium, and cobalt.