80 results about "Carbon oxide" patented technology

The invention belongs to the technical field of gas sensors, and particularly relates to a carbon oxide nanohorn modified chitosan composite membrane and a preparation method and application of the composite membrane. The composite membrane comprises a three-dimensional network skeleton formed by chitosan and carbon oxide nanohorns uniformly dispersed on the three-dimensional network skeleton. The preparation method comprises the following steps: mixing the carbon oxide nanohorn and chitosan according to a mass ratio of 1: (8-10), carrying out vacuum defoaming, spreading and drying. The chitosan carbon nanohorn composite membrane can be used as a sensitive layer of a gas sensor or a monitoring device. According to the application, the carbon oxide nanohorn is introduced into the chitosan matrix as a reinforcing phase, so that the performance of the chitosan film sensor in the aspects of hydrogen sulfide gas detection sensitivity, error and stability can be improved.

A system is described that enables the purification of COx, SOx, NOx, dioxin and furan, and H2S gases using wet and dry filters in a single chimney, comprising: a nozzle system (2) that sprays a mixture consisting of water, micronized zeolite, ammonia, and boron mineral in fine droplets to perform the first purification of SOx (sulfur oxides), NOx (nitrogen oxides), and COx (carbon oxides) gases entering the chimney (1) from the combustion gas, a zeolite-based dry filter (3) that purifies the dioxin and furan components in the flue gas (B) rising after the first purification, a first continuous measurement system (4) that measures the values of the combustion gas at the entry point to the chimney (1), a second continuous measurement system (5) that measures the values of the combustion gas after the dry filter (3), an Al-supported processor (6) that adjusts the amount of the mixture to be sprayed from the nozzle system (2) based on the comparison of the first continuous measurement system (4) and the second continuous measurement system (5).

The present invention relates to a process for producing a methane-rich gas having an operational production mode and an operational standby mode wherein the standby mode comprises directing a standby process gas comprising hydrogen and less than 0.1 vol% carbon oxide into contact with the material catalytically active for methanation.

The present invention provides a process and apparatus for producing an alcohol product stream from a gas fermentation process. A feed gas stream comprising hydrogen and a carbon oxide is subjected to fermentation to convert at least a portion of the feed gas stream to an alcohol. Fermentation is conducted in a reactor having a plurality of trays.

A process for converting a carbon oxide into a renewable product, particularly a carbon oxide produced from the hydroconversion of a biofeedstock. The process comprises contacting a carbon oxide containing process stream with a catalyst system under catalytic conditions to convert the carbon oxide to non-carbon oxide products, wherein the catalyst system comprises a noble metal catalyst. The process may be used in an integrated process for producing a renewable fuel and a renewable product from a carbon oxide, the integrated process comprising a biofeedstock hydroconversion process and a carbon oxide deoxygenation process wherein a carbon oxide byproduct from the hydroconversion process is contacted with a catalyst system comprising a noble metal catalyst to produce a renewable product.

The disclosure relates to a catalyst suitable for electrochemical reduction reactions of one or more carbon oxides, comprising a nitride-doped multi-metallic material comprising a primary metal being copper and one or more secondary metals selected from silver, gold, platinum, palladium, ruthenium, iridium, osmium, and any mixture thereof, wherein the nitride-doped multi-metallic material comprises, as determined by XRD, copper, copper nitride and copper-Me alloy wherein Me is one of the secondary metals and to a gas diffusion electrode suitable for electrolysis of one or more carbon oxides comprising such a catalyst.

The application relates to the field of mixed gas purification and discloses application of gaseous alkane in reducing the risk of combustion and explosion in the deoxidation process of oxygen-containing gas, which comprises: mixing the oxygen-containing gas with hydrogen in the presence of stabilizing gas to perform an oxidation reaction; wherein the stabilizing gas is gaseous alkane, and the oxygen-containing gas contains oxygen and optional other flammable gas. The method for deoxidizing the oxygen-containing light hydrocarbon by hydrogen provided by the application reduces the risk of combustion and explosion of the mixed gas by taking gaseous alkane as the stabilizing gas, adopts the hydrogen-catalyzed reaction to promote the reaction of oxygen in the mixed gas with hydrogen to generate water, achieves the purpose of deoxidation of the oxygen-containing gas, the reaction product is clean, the hydrogen-catalyzed reaction can effectively inhibit the occurrence of carbon deposition on the surface of the catalyst and the generation of carbon oxides, and the hydrogen-catalyzed reaction has strong bearing capacity for the fluctuation of the oxygen content of the raw material gas.

The invention relates to the field of oxidative desulfurization of oil and sulfur-containing liquid hydrocarbon fuels (including diesel fuel) and can be used to reduce harmful emissions and exhausts (in the form of sulphur oxide and carbon monoxide - SO2 and CO) of oil refineries, as well as various industrial enterprises (including energy), facilities and engines using hydrocarbon fuels. Method of oxidative desulfurization of oil and liquid hydrocarbon fuel and reducing harmful emissions of sulfur oxides and carbon provides a process of oxidation in tanks or pipelines by ozone (O3) or ozone-containing gases, in which sulfur oxides (SO2 and SO), without releasing them into the atmosphere, mix in a closed vessel or pipeline with carbon monoxide (CO) and by means of chemical reactions of sulfur monoxide decomposition (2SO↑ → SO2↑+S↓) and sulfur recovery (SO2↑ + 2CO↑ → S↓ + 2CO2↑) elemental sulfur (S) is extracted from oil or liquid hydrocarbon fuel and carbon monoxide (CO) is converted into its dioxide (CO2). The oxidation, also decomposition and recovery reactions are carried out one-step or sequentially, in the presence of oxidation-recovery group catalysts corresponding to these reactions, such as tert-Butyl hydroperoxide (C₄H₁₀O₂). Ozonized atmospheric air is used as ozone-containing gas.

A method for synthesizing methanol and a synthesis gas flow include supplying hydrogen and carbon oxides to a methanol reactor assembly. A residual gas flow with unreacted hydrogen and unreacted carbon oxides is obtained from the methanol reactor assembly, and the residual gas flow is supplied to a hydrogen separation assembly to obtain a hydrogen-containing flow, which is supplied to the methanol reactor assembly and has a higher molar proportion of hydrogen than the residual gas flow. A purge gas flow having methane is obtained from the hydrogen separation assembly. The purge gas flow is supplied to a recovery assembly for recovering a recovery flow having carbon dioxide and hydrogen, the recovery assembly has a recovery reactor for partly converting the methane of the purge gas flow into carbon oxides and hydrogen using a partial thermal oxidation, and the recovery flow is supplied to the methanol reactor assembly.

This invention belongs to the field of acyclic compound synthesis technology, specifically relating to a production process for 1,1-dimethyl-3-hydroxybutyl hydrogen peroxide. The production process includes the following steps: (1) preparing a metal salt solution A; preparing a solution B from 1,3,5-tris(4-carboxyphenyl)benzene; oxidizing carbon nanotubes to form carbon oxide nanotubes, and then preparing a suspension from molecular sieves, metal oxides, and carbon oxide nanotubes; (2) adding solution B to the suspension, continuing to add solution A for reaction, and after post-treatment, obtaining a catalyst precursor; (3) calcining the catalyst precursor in an inert atmosphere to obtain a catalyst; (4) activating the catalyst to catalyze the reaction of 2-methyl-2,4-pentanediol and hydrogen peroxide to obtain 1,1-dimethyl-3-hydroxybutyl hydrogen peroxide. This invention further improves the selectivity and yield of 1,1-dimethyl-3-hydroxybutyl hydrogen peroxide by designing the catalyst.

This invention relates to a lithium secondary battery, comprising a battery casing and an electrode assembly and an electrolyte housed within the battery casing, wherein the value of G, as defined by the following mathematical formula (1), is between 1.8 and 3.5. Mathematical formula (1): where, in the above mathematical formula (1), V CH V represents the volume (in mL) of hydrocarbon gases present in a lithium-ion secondary battery. CO V is the volume (in mL) of carbon oxide gases present in a lithium secondary battery. total The total volume of gas present in the lithium secondary battery (unit: mL) is C, which is the discharge capacity of the lithium secondary battery when charged and discharged at a voltage range of 0.33 C and 2.5 V to 4.2 V.

The present application relates to an effluent analysis device comprising: an effluent sampling passage; the hydrocarbon detector is connected with the discharge sampling channel through a first heat tracing pipeline; the second heat tracing pipeline is connected with the first heat tracing pipeline, and one end, deviating from the first heat tracing pipeline, of the second heat tracing pipeline is provided with a first port and a second port which are arranged in parallel; the nitrogen and oxygen detector is connected with the first port; the carbon and oxygen detector is connected with the second port; the controller is used for respectively acquiring a carbon oxide detection result, a nitrogen oxide detection result and a carbon oxide detection result according to a preset sampling period and carrying out fusion processing. By adopting the discharge analysis equipment, the discharge of the aero-engine can be analyzed and measured.

A method for reducing the risk of burning and explosion in a deoxygenation process of an oxygen-containing gas includes multiple steps. According to this method, in the presence of a gaseous alkane, hydrogen reacts with an oxygen-containing gas from which an unsaturated hydrocarbon has been removed. The oxygen-containing gas contains the oxygen and the unsaturated hydrocarbon, and the content of the oxygen in the oxygen-containing gas is greater than 0.5% by volume. A gaseous alkane is introduced to reduce the risk of burning and explosion of a mixed gas. A hydrocatalytic reaction is carried out to promote oxygen in the mixed gas to react with hydrogen to produce water, which removes oxygen from the oxygen-containing gas and also effectively inhibits carbon deposition on the surface of a catalyst and the production of a carbon oxide, which enhances the toleration for fluctuation of the oxygen content in a raw gas.

The invention belongs to the technical field of reactors, and discloses a post-accident treatment device for a high-temperature gas cooled reactor and supercritical carbon dioxide coupling system, after an accident of the high-temperature gas cooled reactor and supercritical carbon dioxide coupling system, mixed gas containing carbon oxides circulates in a cooling loop; the accident post-treatment device of the high-temperature gas cooled reactor and supercritical carbon dioxide coupling system comprises a reactor, a compression structure and a heat exchanger which are sequentially communicated, the reactor and the heat exchanger can be communicated with a cooling loop of the high-temperature gas cooled reactor, and the reactor is located on the upstream of the heat exchanger and converts carbon monoxide in mixed gas into carbon dioxide. The compression structure is used for pressurizing the mixed gas, and the heat exchanger is used for cooling the mixed gas, so that carbon dioxide in the mixed gas reaches a supercritical state, a coolant and the supercritical-state carbon dioxide are effectively separated, and carbon oxides in a cooling loop are removed.

The invention relates to a process for preparing methanol, in which a first reactant stream having a first reactant in the form of hydrogen and a second reactant stream having a second reactant in the form of a carbon oxide-containing gas mixture are provided; the first reactant and the second reactant are fed into a synthesis reactor arrangement; and the methanol synthesis is conducted in the synthesis reactor arrangement to form a product stream having methanol. Forecasts are created as to rates of change in inflow rate of the first and / or second reactant in order to compensate for fluctuations.

The application discloses a kind of carbon oxide content multi-step prediction methods of methanation furnace based on multivariate deep reconstruction neural network, the method makes full use of the interaction between historical measurable furnace temperature and other process variable data and historical carbon oxide content, introduces historical process variable guidance, extracts deep correlation characteristics of sequence by stacking structure, realizes more accurate prediction to carbon oxide sequence by forward prediction and backward reconstruction layer in the form of minimizing cumulative prediction error;The application can make full use of the continuity and time sequence of methanation furnace process data and quality data, improve the utilization rate of process data on sequence modeling, enrich sequence characteristics, and improve the accuracy of model prediction, realize the multi-step prediction of carbon oxide content of methanation furnace.

The purpose of the present invention is to provide: an antimicrobial agent which is based on carbon-based quantum dots and for which there are no concerns in terms of health and safety; and a method for more efficiently producing carbon-based quantum dots which can be used in such an antimicrobial agent, etc. Provided is an antimicrobial agent containing carbon oxide quantum dots. Also provided is a method for producing the antimicrobial agent, the method comprising a step for producing carbon oxide quantum dots. The step for producing the quantum dots comprises: a step for obtaining nanofiber cellulose by nanofiberizing a cellulose-containing raw material; and a step for heating the obtained nanofiber cellulose in water to a temperature of 100-350°C at a pressure of 200 kPa-20 MPa.

This method for producing an oxygen compound comprises a step for obtaining a gas containing an oxygen compound from a raw material gas containing carbon oxide, hydrogen, and water, in the presence of a catalyst (A) containing rhodium, wherein the content of the water in the raw material gas is 0.03-2.0 vol%, and the content of the rhodium in the catalyst (A) is 0.6-2.9 mass%. Moreover, in this method for producing an oxygen compound, the raw material gas further contains at least one selected from among methanol, ethanol, and acetaldehyde, and the total content of the methanol, the ethanol, and the acetaldehyde in the raw material gas is 0.05-1.0 vol%.

The invention belongs to the field of methanation catalysts, and relates to a flaky nickel-based catalyst as well as a preparation method and application thereof. The nickel-based catalyst comprises an active component nickel and a dispersing agent aluminum oxide, the lamellar thickness of the nickel-based catalyst is 0.8-1.5 nm, and the most probable pore diameter of the nickel-based catalyst is 35-100 nm. The preparation method comprises the following steps: (1) respectively obtaining a nickel salt solution and a mixed alkali solution; and (2) stirring and mixing the nickel salt solution in the step (1) and the mixed alkali solution to obtain a suspension, and reacting to obtain the lamellar nickel-based catalyst. The lamellar nickel catalyst has large pore size distribution, can enhance mass transfer of reactants, can show more excellent catalytic activity in reaction, is used for removing oxycarbide in hydrogen, can realize CO methanation at a lower reaction temperature and reduce the concentration of CO in the hydrogen to be lower than 1ppm, is suitable for industrial production, and has wide application prospects. Wide application prospects are realized.

The invention relates to a process for obtaining a hydrogen stream (1) in a plant (2), wherein a carbon-containing energy carrier stream (3) and an oxygen stream (4) are fed from an oxygen recovery arrangement (5) of the plant (2) to an ATR reactor arrangement (6) of the plant (2) for obtaining a synthesis gas stream (7) comprising hydrogen and carbon oxides, wherein the ATR reactor arrangement (6) affords the synthesis gas stream (7) from the energy carrier stream (3) by autothermal reforming with the oxygen stream (4), so that a catalytic partial oxidation in particular provides the heat required for the endothermic reforming reactions, wherein the synthesis gas stream (7) is fed at least partly to a separating device (8) of the plant (2) for separating the synthesis gas stream (7) into the hydrogen stream (1) including hydrogen and a purge stream (9) including carbon oxides, wherein the plant (2) has a steam heater (13), which steam heater (13) has at least one superheating stage (14a, b) for obtaining a respective superheated output steam stream (15a, b) from a respective input steam stream (16a, b), which input steam stream (16a, b) is conducted through the steam heater (13) until the superheated output steam stream (15a, b) is obtained, and wherein the plant (2) includes a turbine arrangement (12) for generating electrical power, which turbine arrangement (12) is driven by at least one superheated output steam stream (15a, b), characterized in that the at least one superheating stage (14a, b) has at least two heating sections (17) in each case, which heating sections (17) are guided through an inner region (18) of the steam heater (13), in which inner region (18) the heating sections (17) are heated by a burner (19) of the steam heater (13), in that the at least one superheating stage (14a, b) has a quench section (20) which is arranged between the at least two heating sections (17) in terms of process technology, in which quench section (20) steam obtained in

This method produces methanol with reduced dependency on fossil fuel. The method includes: a gas acquisition step of acquiring a gas (G1) containing hydrogen by a pyrolysis reaction and / or a dehydrogenation reaction of a hydrocarbon; and a conversion step of converting at least part of the gas (G1), and a source gas containing (G2) carbon oxide into methanol. In the conversion step, the reaction is allowed to proceed by condensing a high boiling point component containing converted methanol and water, and discharging the high boiling point component condensed to the outside of the reaction system.

The invention relates to a method for producing a hydrogen stream (1), wherein a carbon-containing energy carrier stream (3) and an oxygen stream (4) from an oxygen generation arrangement (5) of a plant (2) are supplied to an ATR reactor arrangement (6) of the plant (2) in order to produce a synthesis gas stream (7) comprising hydrogen and carbon oxides, wherein the ATR reactor arrangement (6) produces the synthesis gas stream (7) from the energy carrier stream (3) by autothermal reforming with the oxygen stream (4), such that a partial oxidation, in particular a catalytic partial oxidation, provides the heat required for the endothermic reforming reactions, wherein the synthesis gas stream (7) is at least in part supplied to an adsorption device (8) of the plant (2) in order to separate the synthesis gas stream (7) into the hydrogen-containing hydrogen stream (1) and into a first purge stream (10a) and a second purge stream (10b), each comprising carbon oxides. The method is characterised in that: the first purge stream (10a) is supplied to a recovery adsorption device (11) of the plant (2) in order to separate hydrogen from the first purge stream (10); the recovery adsorption device (11) provides a recovery stream (12), that comprises the separated hydrogen, and a remaining recycle stream (13); the recycle stream (13) is supplied substantially completely to the energy carrier stream (3); and the second purge stream (10b) is supplied for combustion to at least one feedstock heater (15a) of a plurality of feedstock heaters (15a-e) of the plant (2). The invention also relates to a corresponding plant for producing a hydrogen stream and to a method for preparing methanol.

The invention relates to a process for preparing methanol, in which a synthesis gas comprising carbon oxides and hydrogen is provided, which is passed at elevated pressure and elevated temperature through a catalyst bed of a methanol synthesis catalyst for conversion of the synthesis gas to methanol to obtain a product stream comprising crude methanol and unreacted synthesis gas. Unreacted synthesis gas is recycled to the catalyst bed inlet and combined with the synthesis gas, resulting in a mixed synthesis gas. The mixed synthesis gas at the catalyst bed inlet has a stoichiometry number SN of ≥0.80, the catalyst bed in the conversion of the mixed synthesis gas to methanol has a maximum catalyst bed temperature of ≤280° C., and the mixed synthesis gas at the catalyst bed inlet has a carbon monoxide concentration of ≤20% by volume.

Photocatalytic reactor for carbon oxide reduction, comprising a plurality of lateral light diffusion waveguides. Each lateral light diffusion waveguide comprises a core covered with a cladding having at least one microstructured and / or nanostructured outer lateral surface, which is in turn coated with a layer of photocatalytic material decorated with nanoparticles of plasmonically active metallic material.

The application belongs to the technical field of steel metallurgy, and particularly relates to a low-carbon sintering CO x The system comprises a sintering trolley (1), a plurality of heating elements (2), a lug (3), a wire (4), a power supply (5), and a temperature detection device (6). The plurality of heating elements (2) are respectively inserted from the bottom of the sintering trolley (1), each heating element (2) is provided with a lug (3) at the bottom of two end heads, the lugs (3) are connected in pairs by the wire (4), and the power supply (5) is connected to the circuit formed by the lugs (3) and the wire (4). The temperature detection device (6) is used for monitoring the temperature of the sinter. The method and the system can provide heat for the lower part of the sintering material layer by the electric heating mode, can realize the segregation distribution of the solid fuel, can reduce the usage and the ratio of the solid fuel in the lower part of the sintering material layer, and can effectively reduce CO and CO2 generated by the combustion of the solid fuel.

The present invention provides a material segregation reducing agent that can produce concrete with high viscosity and excellent resistance to material segregation regardless of aggregate quality, and that can fix carbon dioxide into concrete, a powdered cement composition containing the material segregation reducing agent, and a hydraulic composition containing the powdered cement composition. [Solution] Contains cement hydrate carbon oxide, with a BET specific surface area of ​​5-100 m² 2 A material segregation reducing agent with a concentration of / g. A powdered cement composition comprising the material segregation reducing agent and cement, wherein the content of the segregation reducing agent in the powdered cement composition is 1 to 50% by mass. A hydraulic composition comprising the powdered cement composition, aggregate, and water.

The present disclosure relates generally to compositions and processes for producing Fischer-Tropsch catalysts. In particular, the disclosure provides for a process for producing a product composition comprising alcohols and liquid hydrocarbons via a Fischer-Tropsch synthesis reaction, the process comprising: contacting a mixture of hydrogen and a gaseous carbon oxide that is carbon monoxide, carbon dioxide or a combination thereof and an olefin co-feed with a supported cobalt-manganese Fischer-Tropsch synthesis catalyst to provide the product composition; wherein the olefin co-feed comprises at least one C2-C14 olefin and is present in an amount in the range of 0.001 wt % to 40 wt % relative to the total amount of hydrogen, the gaseous carbon oxide and olefin; wherein a weight ratio of manganese to cobalt in the catalyst is at least 0.05 on an elemental basis.

The invention provides a laser cladding method for preventing a nickel-based coating from cracking and a nickel-based coating structure. The method comprises the following steps: providing nickel-based composite powder which comprises a core formed by nickel-based metal and a shell layer formed by transition metal oxide; a coating is formed on the surface of a base material by adopting a laser cladding method, transition metal oxides react with carbon elements to form transition metal elementary substances and oxycarbide, and the oxycarbide is separated from the coating. According to the preparation method, oxide of transition metal is introduced and reacts with carbon in situ, free carbon is changed into oxycarbide to be removed, the cracking phenomenon caused by enrichment of the carbon element at the grain boundary is avoided, meanwhile, the transition metal element plays a role in enhancing grain boundary interface connection, and while cracking is inhibited, the grain boundary interface connection is enhanced. New impurities are not introduced; compared with a traditional mode, the mechanical property and the corrosion resistance are remarkably improved, and the preparation method is simple, clear, high in operability, easy to implement and convenient for large-scale application.

A process for reacting of a hydrocarbon includes reacting a hydrocarbon with oxygen to produce a gas stream and a solid stream in a reactor, and separating the gas stream from the solid stream. The gas stream includes hydrogen, water, and carbon oxides, and the solid stream comprises solid carbon.