112 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 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.

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 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.

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.

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.

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

Provided is an oxocarbon compound represented by formula (1) or formula (2). In formula (3), ring A represents a 10- to 18-membered unsaturated hydrocarbon ring, ring B represents an aromatic hydrocarbon ring, an aromatic heterocyclic ring, or a condensed ring including the ring structure of these rings, ring A and ring B may have a substituent, X represents an alkyl group, an aryl group, or an aralkyl group, and * represents a bonding site with the 4-membered ring in formula (1) or the 5-membered ring in formula (2).

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.

The present application relates to a kind of methods for removing carbon oxide in hydrogen, wherein a kind of methanation catalyst is prepared using a rotary reinforced impregnation method.The methanation catalyst prepared using the rotary reinforced impregnation method has smaller nickel particle size and nickel dispersion compared to the conventional impregnation method for preparing supported catalysts, which can effectively remove carbon oxide at high temperature and exhibit excellent catalytic activity in the methanation reaction for removing carbon oxide at low temperature, thereby reducing the energy consumption of the reaction for removing carbon oxide in hydrogen, and has broad application prospects.

The invention belongs to the technical field of ammonia preparation by solar energy and chemical cycle reforming thermochemical ammonia synthesis, and discloses a solar energy-driven triple chemical cycle reforming reaction ammonia preparation system and process, the system comprises a tower type solar heat collection module, a chemical cycle reforming reaction module and an ammonia synthesis module, sunlight reflected by the Fresnel lens is subjected to heat storage through the heat collection equipment, and the heat is used as reaction heat required by subsequent chemical cycle reaction and ammonia synthesis; the high-valence metal oxide in the chemical circulation reactor is firstly subjected to reduction reaction with the carbon-containing oxide to form a low-valence oxide, then the low-valence oxide is oxidized with water vapor and returns to the high-valence oxide again, and the generated product flows into the ammonia synthesis reactor to synthesize ammonia. According to the invention, raw materials required by ammonia synthesis can be provided by taking sunlight as a heat source and a chemical cycle reforming technology, the utilization rate of cost can be improved, the cost can be reduced, and a set of environment-friendly, efficient and recyclable ammonia synthesis device is formed.

The invention relates to a method for synthesising a hydrogen-containing compound, wherein a synthesis gas stream (1) comprising hydrogen and carbon oxides is fed to a methanol reactor arrangement (2) for partial conversion into methanol, wherein a methanol residual gas stream (3) is obtained from the methanol reactor arrangement (2), at least part of said methanol residual gas stream (3) being fed to a CO2 remover (4) from which a synthesis recycle stream (5) and a CO2 product stream (6) are obtained, said CO2 product stream (6) having a higher molar carbon dioxide content than the methanol residual gas stream (3), and wherein part of the synthesis recycle stream (5) is fed to the methanol reactor arrangement (2). The method according to the invention is characterised in that part of the synthesis recycle stream (5) is fed to a hydrogen separator (7) from which a separation stream (8) is obtained which has a higher molar hydrogen content than the synthesis recycle stream (5). The invention also relates to a corresponding system for synthesising a hydrogen-containing compound.

The utility model discloses an induction heating furnace system, and belongs to the technical field of new energy. According to the technical scheme, the device comprises a heating furnace system, and the heating furnace system is integrated with a heating element, a three-channel valve, a distribution collecting pipe and a control system; the heating element adopts a circumferential symmetric modular design, multi-section heating is realized, energy supply as required and accurate temperature control are realized, and the heating process requirements in the petrochemical industry field can be met; the heating furnace system can replace a traditional gas heating furnace, adopts green electric power resources as energy sources, avoids emission of a large amount of nitric oxide and oxycarbide, and is clean, environment-friendly, energy-saving and efficient. The novel heating furnace system can realize on-line replacement of heating elements, prolongs the production cycle, and can be widely applied to the field of practical chemical engineering.

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.