145 results about "Oxocarbon" patented technology

This disclosure relates to systems and methods for gas separation in oxocarbon electrolyzers. A disclosed method includes supplying an oxocarbon to an input stream of a cathode chamber of an oxocarbon electrolyzer, converting the oxocarbon to a product gas in the cathode chamber, obtaining an output stream, with the product gas and residual oxocarbon, from the oxocarbon electrolyzer, and recycling a portion of the product gas, from the output stream, to the input stream.

A process can be used for the treatment of an offgas stream, which is formed in a plant for the production of aluminum by electrolytic reduction of aluminum oxide in a melt, using at least one anode composed of a carbon-containing material. The offgas stream contains carbon oxides due to the reduction of the aluminum oxide by the carbon. At least a substream of the carbon oxides contained in the offgas stream is reacted with hydrogen or mixed with a hydrogen stream and is subsequently passed to a use. After purification and conditioning of the offgas stream in a device, an enrichment, for example with carbon monoxide, can subsequently be carried out in a reactor and the synthesis gas obtained in this way can be fed to a chemical or biotechnological plant for the synthesis of chemicals of value.

The invention provides a method of reducing a gaseous carbon oxide to carbon, the method comprising mixing a gas comprising a gaseous carbon oxide with a liquid metallic composition by producing a dynamic interface between the gas and the liquid metallic composition, wherein the liquid metallic composition is not dispersed as droplets in a liquid carrier during the mixing and wherein the gaseous carbon oxide reacts stoichiometrically with at least one metal in the liquid metallic composition to form carbon and metal oxide.

The invention provides hydrocarbon synthesis equipment and a hydrocarbon synthesis process. The hydrocarbon synthesis equipment comprises an alcohol synthesis unit and an alcohol-to-hydrocarbon section, the apparatus and process incorporate a reforming system for treating C1-C4 paraffins and / or olefins enriched by-product streams produced in the apparatus and process to provide a reformer-based syngas stream that is sent to the inlet of an alcohol synthesis unit.

The invention relates to the technical field of methanol preparation through oxycarbide hydrogenation, in particular to a method for preparing methanol through oxycarbide hydrogenation for an offshore energy island. The method comprises the following steps: S1, partially reducing CO2 into CO through an electrocatalytic reduction reaction to form a CO and CO2 mixed gas with a controllable carbon-oxygen ratio, and controlling the volume ratio of CO2 / (CO2 + CO) in the mixed gas to be 10-60%; and S2, reducing the mixed gas of CO and CO2 and H2 into methanol through thermocatalysis. According to the method, green hydrogen obtained through power generation and hydrogen production of renewable energy serves as a raw material of CO2 hydrogenation reaction, methanol is prepared by combining CO2 obtained through ship flue gas CO2 capture and island air CO2 capture, the method has the advantages of being high in CO2 conversion rate, high in methanol selectivity, small in energy consumption, long in catalyst service life and the like, the renewable energy on an offshore energy island can be effectively utilized, and the method is suitable for industrial production. And ship carbon emission reduction and CO2 resource utilization are facilitated.

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).

A method of producing a liquid fuel includes: causing a raw material gas containing at least a carbon oxide and hydrogen to flow into a reactor storing a catalyst; and producing the liquid fuel from the raw material gas through a conversion reaction in the presence of the catalyst. The raw material gas further contains oxygen. The ratio of the concentration of carbon monoxide to the concentration of carbon dioxide in the carbon oxide is 0.9 or less.

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 separating a carbon dioxide product stream from a flue gas stream is disclosed. The process comprises passing a stream of carbon dioxide and oxygen to a regenerator to generate a catalyst stream and produce a flue gas stream comprising carbon oxides, and / or nitrogen oxides, catalyst fines, oxygen, and water. Heat is transferred to a water stream from the flue gas stream in a heat recovery unit to form a cooled flue gas stream and a steam stream. Water is removed from the cooled flue gas stream in a dehydration unit to provide a dehydrated flue gas stream. The dehydrated flue gas stream is separated into an oxygen stream and a carbon dioxide product stream.

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.

Method for verifying the functionality, in particular the oxidation capability, of a NO oxidation catalyst installed in the exhaust line of an internal combustion engine operated with excess air, wherein, for the purpose of verifying the functionality of the NO oxidation catalyst (5), a defined amount of carbon monoxide is added and / or generated as a reducing agent upstream of the NO oxidation catalyst (5), and this carbon monoxide is oxidized at the NO oxidation catalyst (5) with the help of the oxygen contained in the exhaust gas stream upstream of the NO oxidation catalyst, wherein the change in the oxygen content in the exhaust gas stream caused by the oxidation of the added and / or generated carbon monoxide within and / or downstream of the NO oxidation catalyst (5) is recorded and / or determined as the actual oxygen value and compared with a predetermined target oxygen value, and wherein a defined deviation of the actual oxygen value from the target oxygen value indicates a deterioration in the functionality of the NO oxidation catalyst (5), in particular by generating and / or issuing an error message, and wherein the amount of exhaust gas returned to the combustion chamber of the internal combustion engine (2) during the verification phase and the air / fuel ratio Lambda are varied such that the combustion chamber temperature does not exceed 1850K in the range greater than to and including 1.02 Lambda, in particular in the range of 40 to and including 1.02 Lambda, 1600K in the range of 1.02 to and including 0.98 Lambda and 1500K in the range less than 0.98 Lambda.

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.

A process for producing a methane containing product gas mixture is described comprising the steps of: (a) providing a hydrogen containing feed gas stream; (b) providing a carbon oxide containing feed gas stream containing carbon dioxide and optionally carbon monoxide; (c) measuring the flow-rate of the hydrogen containing feed gas stream and adjusting the flowrate of the carbon oxide containing feed gas stream, relative to of the flowrate of the hydrogen in the hydrogen containing feed gas stream to produce a feed gas mixture having a composition with a stoichiometric ratio of reactants having a value M of about 3, where M = ([H2]-[CO2]) / ([CO]+[CO2]); (d) passing the feed gas mixture through one or more beds of methanation catalyst, in a methanation unit, to react a portion of the hydrogen with at least a portion of the carbon dioxide and any carbon monoxide to form a first methane containing product gas mixture including residual hydrogen and residual carbon dioxide; (e) measuring the concentration of residual hydrogen of the first methane containing product gas mixture; and combining the first methane containing gas product mixture with an oxygen containing stream, wherein the flow rate of the oxygen containing stream is adjusted relative to the measured concentration of residual hydrogen in the first methane containing product gas mixture, so as to produce a second methane containing product gas mixture which is passed through a bed of an oxidation catalyst in a hydrogen removal unit to form a hydrogen depleted third methane containing product gas mixture; comprising a total of less than 5 mole% hydrogen; wherein the hydrogen containing gas stream is produced by electrolysis of water.

The invention relates to a method and a device for producing a crude synthesis gas containing hydrogen and carbon oxides by simultaneous partial oxidation of a hydrocarbon-containing gas input stream and a hydrocarbon-containing liquid input stream containing impurities. The evaporation of the liquid input stream is performed under partial evaporation conditions to obtain a gaseous mixed input stream and a liquid residual stream. The gaseous mixed input stream is impurity-depleted relative to the hydrocarbon-containing liquid input stream and is supplied to partial oxidation, where the depletion is effective to prevent the formation of deposits or carbon deposits by crystallization of dissolved inorganic components, especially in and / or upstream of the POX burner. The liquid residual stream is enriched with impurities relative to a hydrocarbon-containing liquid input stream and discharged from the process.

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 utility model provides a robot welding device. The robot welding device comprises a six-axis mechanical arm, a welding device is installed at the front end of the six-axis mechanical arm, one side of the welding device is fixedly connected with a purification mechanism used for purifying poisonous gas and metal smoke generated in the welding process, and the purification mechanism comprises a purification box, a filter screen, an activated carbon filter layer, an air pump and a water tank. An air pump works to extract air in the purification box through an air extraction pipe, so that negative pressure is formed at an opening of an expansion pipe to extract smoke and gas generated in the welding process into the purification box, and then a filter screen filters metal particles in the smoke; and the absorbent cotton and the activated carbon filter layer filter oxycarbide and nitric oxide in smoke and gas and then discharge the smoke and the gas into the air, so that the air around welding is filtered and purified to a certain extent, and the harm of poisonous gas generated in the welding process to workers is reduced.

The invention discloses a method for melting electric sub-fire full hydrogen and full oxygen float glass, comprising: dividing the glass melting pool into a rod area, a foam area, a hot spot area and a mirror area, setting an electric heating system in each area, and inserting a bubbler system in the mirror area; arranging a bottom-fired heating spray gun system on the breast wall, wherein the hydrogen energy consumption of the hot spot area and the mirror area accounts for more than 35% of the total energy consumption; heating by electric energy, adding mineral fuel at the same time, and heating the above-mentioned pools by a mineral fuel auxiliary electric heating system; adjusting the electric energy heating ratio to more than 60% of the total heating energy, wherein the heating electric energy of the rod area and the foam area is adjusted to more than 40% of the total heating electric energy; separating the melting area from the cooling area. The beneficial effects of the invention are: it can ensure that the longitudinal convection morphology of the glass kiln does not change greatly and the temperature gradient of the glass liquid does not occur, meet the process operation requirements, save energy, reduce the emission of carbon oxides and nitrogen oxides, and has obvious economic and social benefits.

A process of separating carbon oxides from a flue gas stream is disclosed. The process comprises separating a flue gas stream into a first flue gas stream and a second flue gas stream. The first flue gas stream is combusted with an oxygen stream in a boiler to provide a carbon dioxide rich flue gas stream. A carbon dioxide recycle stream is taken from the carbon dioxide rich flue gas stream. The second flue gas stream is recycled to an oxygenate production unit. The carbon dioxide recycle stream is recycled to the boiler or to a regenerator or both.

The embodiment of the utility model discloses an IC removal device and a TOC analysis system, and relates to the technical field of TOC detection. The IC removal device includes an upper case, a lower case, and a permselective membrane. A first groove is formed in the upper shell, first fixing pieces are arranged at the two ends of the upper shell, and the first groove is used for containing oxycarbide. A second groove is formed in the lower shell, fixing grooves are formed in the two ends of the lower shell, the second groove is used for containing sample fluid, a second fixing piece is arranged in each fixing groove, the upper shell and the lower shell are fixed in an involution mode, and the first fixing piece is inserted into the fixing grooves and abuts against the second fixing pieces, so that the upper shell and the lower shell are detachably fixed. And the selective permeable membrane is arranged between the upper shell and the lower shell and is used for allowing oxycarbide to pass through.

The present invention relates to a method for synthesizing methanol (1), wherein: a carbon-containing fuel stream (11) is supplied to a synthesis gas reactor component (13) to obtain a synthesis gas stream (2) containing hydrogen and carbon oxides, the synthesis gas stream (2) is supplied to a first reactor stage (21a) of a methanol reactor component (4) to be partially converted into methanol (1), the generation pressure when the synthesis gas stream (2) is obtained in the synthesis gas reactor component (13) is higher than the synthesis pressure when the synthesis gas stream (2) is partially converted into methanol (1) in the first reactor stage (21a), a residual gas stream (15) containing unreacted carbon oxides is obtained from the methanol reactor component (4), and the residual gas stream (15) is supplied to a circulation compressor (14) to provide The method comprises the steps of: raising the pressure of a residual gas stream (15), supplying the pressure-raised residual gas stream (15) to a methanol reactor assembly (4) for partial conversion into methanol (1), supplying the synthesis gas stream (2) to a heat recovery device (10) before supplying it to a first reactor stage (21a) to recover heat from the synthesis gas stream (2), supplying a recovery stream (6) with unreacted hydrogen from unreacted residual gas (16a) from the first reactor stage (21a) to a hydrogen recovery assembly (5) to obtain an H recovery stream (7) containing unreacted hydrogen from the recovery stream (6), and resupplying the unreacted hydrogen of the recovery stream (6) to the first reactor stage (21a) for at least partial conversion into methanol (1). The method is characterized in that the unreacted hydrogen of the recovery stream (6) is only lifted once by a recycle compressor (14) with unreacted carbon oxides from the first reactor stage (21a) before being resupplied to the first reactor stage (21a). The invention also relates to a corresponding system for the synthesis of methanol (1).

The main purpose of the present invention is to reduce the temperature difference between the gas temperature at the inlet and the gas temperature at the outlet of a reactor in a conversion reaction for converting a raw material gas containing carbon oxide and hydrogen gas into a liquid fuel. A method for producing a liquid fuel according to an embodiment of the present invention comprises: a step in which a starting material gas containing at least a carbon oxide and hydrogen gas is introduced into a reactor in which a catalyst is housed; and a step for generating a liquid fuel from the raw material gas by a conversion reaction in the presence of the catalyst, the raw material gas further containing an inert gas, and the ratio of the carbon monoxide concentration to the carbon dioxide concentration in the carbon oxide being 0.9 or less.

A method for generating hydrogen (H2) includes introducing a H2-containing feed gas stream into a reactor containing a red mud-supported nickel (Ni-SRM) catalyst including Ni-SRM catalyst particles. The method further includes passing the H2-containing feed gas stream through the reactor to contact the H2-containing feed gas stream with the Ni-SRM catalyst particles at a temperature of 500° C. to 700° C. to form an activated Ni-SRM catalyst and terminating the introducing the H2-containing feed gas stream. The method further includes introducing and passing CH4-containing feed gas stream through the reactor to contact the CH4-containing feed gas stream with the activated Ni-SRM catalyst at a temperature of 600° C. to 1000° C. thereby converting at least a portion of the CH4 to carbon and H2.

[Problem] The purpose of the present invention is to provide: a carbon neutral product which is formed using a recycled raw material recycled from materials other than glass, which minimizes the discharged amount of by-products such as carbon dioxide derived from primary raw materials, and which contains glass as a primary product; and a method for producing glass. [Solution] Provided is a carbon neutral product that is formed using a silicon-based raw material, a calcium-based raw material and a sodium-based raw material as primary raw materials, with at least one of the silicon-based raw material, calcium-based raw material and sodium-based raw material that serve as primary raw materials being recycled from materials other than glass. The carbon neutral product is characterized by containing: a primary product comprising glass formed by using a material containing a recycled material containing carbon derived from a material as at least a part of the primary product; and a by-product comprising a gas containing a carbon oxide which is derived from the primary raw materials and is not substantially newly produced.

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 present disclosure relates generally to a carbon-neutral process for the generation of carbon-neutral hydrogen and carbon-neutral electricity. More specifically, the present disclosure relates to compositions, methods and apparatus employing a carbon-neutral process for generating electricity employing a liquid organic hydrogen carrier (LOHC) for supplying hydrogen for generating the carbon neutral electricity. The present disclosure also relates more specifically to carbon-neutral compositions consisting of liquid organic hydrogen carriers used for supplying hydrogen to generate electricity that may be regenerated in a carbon-neutral process using an apparatus with a net zero atmospheric emission of carbon oxides.

The present invention discloses a method for efficiently capturing carbon oxides in flue gas from steel sources by using aluminum waste, belonging to the technical field of resource utilization of aluminum waste. This method involves covering the surface of aluminum waste with molten salt and melting it under an inert atmosphere to obtain a melt. After removing nitrogen and oxygen from the flue gas from steel sources, it is introduced into the interior of the melt. The carbon oxides in the flue gas from steel sources are used to selectively oxidize the aluminum in the melt into aluminum trioxide, which migrates to the molten salt layer on the surface of the melt to form aluminum-rich slag. The aluminum-rich slag is separated from aluminum trioxide by water leaching. This method makes full use of the activity differences between metallic aluminum and other impurity components in aluminum waste, selectively oxidizes aluminum while capturing flue gas, and then realizes the separation of aluminum from impurity components such as silicon, copper, and iron. The aluminum-rich slag can be obtained high-purity aluminum trioxide through simple treatment, having both economic and environmental benefits and meeting the development requirements of the steel industry and the secondary aluminum industry.

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