280 results about "Co carbon monoxide" patented technology

A hydrocarbon stream is combusted within a reactor to produce soot and syngas. Sub-stoichiometric combustion of the hydrocarbon stream within the reactor converts at least 10% of the carbon in the hydrocarbon stream into soot. The syngas is mixed with a steam stream to produce a hydrogenation feed stream. A shift reactor converts at least a portion of the carbon monoxide and steam to carbon dioxide and hydrogen to produce a shifted gas stream. Water is separated from the shifted gas stream to produce a dehydrated gas stream. The dehydrated gas stream is separated to produce a hydrogen product stream and a recycle stream. The recycle stream is recycled to the reactor.

A carbon dioxide (CO2) hydrogenation catalyst and a method of its preparation. The CO2 hydrogenation catalyst includes an alkali-metal enriched bauxite residue including calcium carbonate (CaCO3), iron(III) oxide (Fe2O3), iron(III) oxyhydroxide (FeO(OH)), aluminum hydroxide (Al(OH)3), sodalite, muscovite, and Na5Al2CSi3O15. The CO2 hydrogenation catalyst further includes 1 weight percent (wt. %) to 10 wt. % potassium based on a total weight of the CO2 hydrogenation catalyst by inductively coupled plasma optical emission spectroscopy (ICP-OES). The CO2 hydrogenation catalyst is used in a method of hydrogenating carbon dioxide to produce olefins.

A process for producing C2 to C5 hydrocarbons, the process comprising introducing a feed stream comprising hydrogen and a carbon-containing gas selected from the group consisting of carbon monoxide, carbon dioxide, and mixtures thereof into a reaction zone of a reactor, and converting the feed stream into a product stream comprising C2 to C5 hydrocarbons in the presence of a shaped mixed catalyst in the reaction zone. The shaped mixed catalyst comprises a metal oxide catalyst component comprising nickel oxide, gallium oxide, and zirconium oxide; a microporous catalyst component is a molecular sieve having 8-MR (member ring) pore openings; and wherein the mixed catalyst is reduced in a hydrogen-containing atmosphere at a temperature of 450°C to 750°C.

This invention relates to a method for preparing hexamethylenediamine by hydrogenation of adiponitrile in the presence of a Raney nickel catalyst, wherein a Raney nickel catalyst modified by treatment with carbon monoxide or carbon dioxide in a liquid medium is used.

A process is described for synthesising hydrocarbons comprising the steps of: (a) feeding a gas mixture comprising hydrogen and carbon dioxide to a reverse water-gas shift unit to form a crude synthesis gas comprising hydrogen, carbon monoxide carbon dioxide and steam, (b) cooling the crude synthesis gas to condense water and removing water, and optionally carbon dioxide, from the crude synthesis gas to produce a feed stream comprising hydrogen and carbon monoxide, (c) passing the feed stream though a hydrocarbon synthesis unit comprising a reactor containing a Fischer-Tropsch catalyst to form a product stream comprising a mixture of liquid hydrocarbons, a co-produced water stream, and a tail gas stream containing hydrogen, carbon monoxide and gaseous hydrocarbons, and (d) upgrading the product stream in an upgrading unit to produce an upgraded product stream, wherein a naphtha stream is separated from the product stream or the upgraded product stream, at least a portion of the tail gas stream is fed with steam to a first derichment vessel containing a derichment catalyst to form a first gas mixture containing methane, at least a portion of the naphtha stream is fed with hydrogen and steam to a second derichment vessel containing a derichment catalyst to form a second gas mixture containing methane, and the first and second gas mixtures containing methane are fed to the reverse water gas shift unit. A system for performing the process is also provided.

This application discloses an aluminum electrolysis anode gas treatment device and flue gas treatment method, relating to the field of aluminum electrolysis flue gas treatment technology. The aluminum electrolysis anode gas treatment device includes: a gas collection unit disposed at the burner of the electrolytic cell; a separation unit, the inlet of which is connected to the outlet of the gas collection unit, the separation unit having a first outlet and a second outlet, the first outlet for outputting carbon dioxide gas and the second outlet for outputting carbon monoxide gas; a directional conversion unit, the inlet of which is connected to the first outlet of the separation unit; and a preheating unit, the inlet of which is connected to the second outlet of the separation unit. This application achieves a closed-loop treatment of aluminum electrolysis anode gas from collection, separation to resource utilization, simultaneously solving the technical problems of occupational health hazards, high carbon emissions, and carbon resource waste existing in the prior art.

In a process for separating a feed flow containing hydrogen, carbon dioxide and at least one of the components chosen from the list of carbon monoxide, methane or nitrogen, a feed flow is separated forming a mixture (1) containing predominantly hydrogen, carbon dioxide and at least one of the components chosen from the list of carbon monoxide, methane or nitrogen and the mixture is separated by membrane separation in a membrane system (M1, M2) comprising a turbine (T1, T2) coupled with at least one booster compressor (C1, C2).

The present application relates to a process for producing synthetic ammonia by using hydrogen-containing tail gas, comprising the following steps: S1: sodium cyanide tail gas is pressurized, then heated and water-cooled. S2: the impurity-removed tail gas is desulfurized. S3: the desulfurized tail gas is mixed with chlor-alkali tail gas, the mixed gas is heated and deoxidized. S4: the deoxidized tail gas is pressurized and enters a PSA (pressure swing adsorption) device for pressure swing adsorption treatment, obtaining high-purity hydrogen. In the PSA device, dehydrating, carbon dioxide, methane, carbon monoxide and nitrogen adsorbents are sequentially arranged. The carbon dioxide adsorbent is activated carbon modified by carbonate and strong alkali, and the nitrogen adsorbent is 13X zeolite molecular sieve modified by Na + and Ba 2+ and Ca 2+ ion exchange. S5: nitrogen reacts with the high-purity hydrogen obtained in step S4 to generate ammonia. The present application can improve the adsorption capacity of the adsorbent for impurity gas, thereby reducing the replacement frequency of the adsorbent, prolonging the service period and service life of the adsorbent, and improving the production efficiency.

The application discloses a method for synthesizing calcium formate from carbon monoxide and calcium hydroxide and recycling tail gas to prepare sodium formate, and belongs to the technical field of fine chemical synthesis and resource recycling. The method uses tail gas (CO: 80.70%, O2: 1.44%, CH4: 0.43%, H2: 7.27%, N2: 10.16%) and calcium hydroxide (Ca(OH)2) as raw materials, selects an ionic liquid with a specific structure as a catalyst and a reaction medium, and directionally synthesizes calcium formate under mild conditions. Sodium formate is prepared after pretreatment of the calcium formate production tail gas, and the separation and circulation process of the ionic liquid, the washing mechanism of the ethanol solution and the recycling scheme of the ethanol after washing are clarified. The application realizes full resource recycling of coal chemical CO, ionic liquid and ethanol, solves technical problems such as tail gas pollution, catalyst recovery difficulty and solvent waste in the traditional process, and has the advantages of high calcium formate purity (≥98%), high CO conversion rate (≥92%), high sodium formate purity (≥98%) and high ethanol recovery efficiency (≥90%). The comprehensive economic and environmental benefits are significant, and the method is suitable for industrialized production.

The utility model relates to underground safety protection technical field, concretely is a kind of carbon monoxide two-stage reaction elimination device for coal mine underground drilling blasting, it include: mine water gel explosive, carbon monoxide reagent, primary container, secondary container, sealing cover and connecting pipe, the one end of primary container is enclosed and built-in sleeve in one end, mine water gel explosive is placed in sleeve, carbon monoxide reagent is placed outside sleeve. Lead from secondary container from the lead wire port of mine water gel explosive lead, carbon monoxide reagent is placed into secondary container, and mine water gel explosive lead is led from the lead wire port of sealing cover. Connecting pipe is passed through secondary container, and inner-embedded nut is tightened. After sealing process is completed, detonate explosive, after primary container, secondary container are simultaneously blown apart, carbon monoxide reagent in two containers is actively reacted with carbon monoxide.

This invention discloses a proton exchange membrane hydrogen pump anode and its application. The anode includes an anode sheet and a catalyst composited on the anode sheet. The catalyst includes a support and a first metal and a second metal composited on the support. The first metal is selected from one or more of platinum, iridium, palladium, and ruthenium; the second metal is selected from one or more of iron, cobalt, nickel, molybdenum, and vanadium. The first metal serves as the main active center for the hydrogen oxidation reaction, and the second metal can regulate the electronic structure of the first metal, thereby reducing the adsorption of carbon monoxide at the active site or promoting its oxidative removal. The synergistic effect of the two metals allows the anode containing the catalyst to maintain high hydrogen oxidation activity and stability in hydrogen fuel containing carbon monoxide, thereby improving the carbon monoxide poisoning resistance of the proton exchange membrane hydrogen pump containing the anode.

This invention belongs to the field of catalytic reaction technology, specifically disclosing a Fischer-Tropsch synthesis catalyst regeneration and carbon dioxide co-production reactor and its co-production process. The reactor includes a Fischer-Tropsch synthesis fixed-bed reactor, a carbon monoxide conversion reaction unit, and a tail gas discharge unit. The Fischer-Tropsch synthesis fixed-bed reactor is filled with a Fischer-Tropsch synthesis catalyst for the Fischer-Tropsch synthesis reaction and catalyst carbon deposition and char regeneration. The carbon monoxide conversion reaction unit is located downstream of the Fischer-Tropsch synthesis fixed-bed reactor and converts the carbon monoxide generated during char regeneration into carbon dioxide. The tail gas discharge unit outputs carbon dioxide-rich gas and removes residual oxygen from the tail gas. By performing in-situ conversion of carbon monoxide during regeneration, this invention can significantly increase the volume fraction of carbon dioxide in the regenerated tail gas and provide a stable feedstock for the downstream carbon dioxide hydrogenation to methanol reaction, thereby achieving synergy between catalyst regeneration and efficient utilization of carbon resources.

The present application relates to a kind of preparation methods and systems of electronic grade dimethyl carbonate prepared from dimethyl oxalate, the method comprises the following steps: dimethyl oxalate is preheated and sent into decarboxylation reactor to carry out decarboxylation reaction, carbon monoxide, dimethyl carbonate and other light components are extracted from the top of decarboxylation reactor, and heavy components are extracted from the bottom of decarboxylation reactor;Carbon monoxide, dimethyl carbonate and other light components extracted are separated after gas-liquid, and liquid phase dimethyl carbonate is sent into rectifying column to carry out rectification purification;Electronic grade dimethyl carbonate product is obtained by crystallization purification in refrigeration crystallization device after rectification, and crystallization mother liquor returns rectifying column;Decarboxylation reactor is three-stage reaction tower, and rectifying section, reaction section, stripping section are sequentially from top to bottom.The present application is completely reacted by the design of three-stage decarboxylation reactor;Heavy components generated are extracted in real time, and catalyst stability is high;Electronic grade DMC is prepared by using rectifying column coupled with crystallization tower, and the yield of DMC is significantly improved.

The utility model provides a kind of acetic acid preparation system.System includes: catalyst pipeline, methanol pipeline, carbon monoxide pipeline, first heat exchanger, second heat exchanger and sequentially communicated carbonyl reactor, evaporator, light removal tower, dehydration tower and product tower;Carbonyl reactor communicates evaporator, evaporator top outlet communicates light removal tower, light removal tower communicates dehydration tower, dehydration tower communicates product tower, and product tower side wall is connected with product pipeline;Product pipeline and methanol pipeline are coupled heat exchange by first heat exchanger;Light removal tower bottom outlet is connected with light removal tower side wall via second heat exchanger, and product tower top outlet is connected with dehydration tower via second heat exchanger;Methanol pipeline and catalyst pipeline connect carbonyl reactor;Carbonyl reactor side is provided with catalyst circulation pipe, and the inlet of catalyst circulation pipe is connected with the bottom of carbonyl reactor, and outlet is connected with the upper portion of carbonyl reactor and below liquid level.Application of the system helps to improve raw material conversion rate and product yield.

This invention relates to the field of waste-to-energy incineration technology and provides an artificial intelligence-based combustion control method for waste-to-energy boilers. The method includes: collecting data from a distributed control system, flue gas monitoring, and feed metering, aligning these data with a unified time frame, and generating combustion condition data; calculating drift residuals and missing rates, classifying and labeling them to obtain confidence weights; calculating equivalent lower heating value and moisture content from steam flow and feed flow based on energy balance, updating parameters only during the stable steam and carbon monoxide windows; identifying the equivalent time delay from control quantities to steam and emissions based on cross-correlation peak values, writing this information into the prediction model after stabilization, and performing shift compensation; constructing hard constraints for steam and emissions based on aligned predictions, writing confidence into the cost function, using MPC to calculate the feasible region, selecting incremental deployments within the policy network domain, and backing down and auditing for low confidence levels.

This invention belongs to the field of solid waste resource utilization technology. To address the problems of inconsistent temperature during existing fluidized bed waste plastic gasification processes, which prevent graded conversion and result in products primarily consisting of hydrogen and carbon monoxide with low added value and low energy efficiency, this invention provides a device and method for graded gasification of waste plastics to prepare chemicals. The fluidized bed reactor has a top section connected to a silo. The middle section of the reactor is connected to air / oxygen tanks, carbon dioxide tanks, hydrogen tanks, and carbon monoxide tanks. A gas-liquid separator and column chromatography are connected at the top of the reactor, and a liquid pump connects it to a preheater at the bottom. An outlet is located at the bottom. Graded conversion of waste plastics is achieved within the fluidized bed, increasing the added value of the waste plastics and facilitating their graded conversion and high-value utilization. The invention features high production efficiency, continuous production capability, and applicability to other solid waste resource utilization processes.

A slag carbonation system linked to synthetic gas production, according to one embodiment of the present invention, comprises: a synthetic gas production apparatus for producing synthetic gas containing hydrogen and carbon monoxide from a mixed gas containing carbon dioxide; a carbonation apparatus for carbonating slag by using carbon dioxide contained in the synthetic gas obtained from the synthetic gas production apparatus; and a gas-liquid separator for separating moisture contained in the synthetic gas obtained from the carbonation apparatus.

The present application relates to smelting technology technical field, specifically to a kind of direct reduction iron-making equipment and iron-making method using secondary reduction reaction.The direct reduction iron-making equipment includes sequentially arranged and sequentially connected raw material feeding device, direct reduction iron-making furnace and direct reduction iron-making tank according to the flow of iron-making raw material processing, and gas separation device is further provided between the direct reduction iron-making furnace and the direct reduction iron-making tank for transporting the mixed gas of carbon monoxide and carbon dioxide generated in the direct reduction iron-making furnace into the direct reduction iron-making tank for secondary reduction reaction after separating carbon dioxide;Wherein, the raw material feeding device includes iron ore feeder, coke or coal feeder, and iron ore preheater is provided on the iron ore feeder for preheating iron ore.The present application improves the production efficiency of direct reduction iron-making, and reduces the equipment investment cost of direct reduction iron-making.

A syngas generation system including a molten carbonate fuel cell (MCFC) including an MCFC cathode configured to receive an MCFC cathode input stream including a flue gas stream and an MCFC anode configured to output an MCFC anode exhaust stream including carbon dioxide and steam. The syngas generation system further includes a solid oxide electrolysis cell (SOEC) including a SOEC cathode and a SOEC anode. The SOEC is configured to receive a SOEC cathode input stream at the SOEC cathode, the SOEC cathode input stream including at least a portion of the MCFC anode exhaust stream, co-electrolyze carbon dioxide and steam in the SOEC cathode input stream, and output a SOEC cathode exhaust stream including carbon monoxide and hydrogen gas from the SOEC cathode.

Provided are: a method for producing carbon monoxide, which has excellent reduction efficiency of carbon dioxide; a carbon dioxide reduction electrode; a carbon dioxide reduction device; and a modified metal complex.　This method for producing carbon monoxide includes reacting carbon dioxide with water in the presence of a modified metal complex which is obtained from a mixture that contains a polynuclear metal complex represented by formula (1) and a conductive material. In the formula (1), R, P, Q1, Q2, M, a, X, b, and O are as defined in the description.

The utility model discloses a coal gas pressure stabilizing control device for a blast furnace coal injection and pulverizing system. A waste gas pipeline is provided with a waste gas fan, a waste gas electric regulating valve, a waste gas flowmeter and a waste gas pressure transmitter; a coal mill inlet temperature thermal resistor and a coal mill inlet pressure transmitter are arranged on the outlet pipeline; a coal gas pressure transmitter, a coal gas flowmeter and a coal gas electric control valve are arranged on the coal gas pipeline, and an outlet temperature thermocouple and an outlet pressure transmitter are further arranged on the outlet pipeline; a waste gas carbon monoxide detector and a waste gas oxygen content detector are arranged on the waste gas pipeline; and a gas pneumatic quick switching valve, a gas electric blind plate valve, a gas electric butterfly valve and a carbon monoxide heat conduction type gas analyzer are arranged on the gas pipeline, and the number of the gas electric control valves is larger than or equal to two. According to the utility model, the gas regulating valve or the bypass pipeline three-valve group is additionally arranged, so that a monitoring instrument is perfected, and the gas flow and pressure are accurately controlled.

The application relates to a solid oxide co-electrolysis driven carbon cycle liquid fuel preparation system, which comprises a solid oxide electrolysis device configured to produce synthetic gas; a Fischer-Tropsch device in pipeline communication with the solid oxide electrolysis device; a multi-component separator in pipeline communication with the Fischer-Tropsch device; a feeding device in pipeline communication with the multi-component separator; and a combustion device in pipeline communication with the multi-component separator and the Fischer-Tropsch device. Hydrogen and the like can be sent into the feeding device to form gas raw material supplement and recycling, carbon monoxide and hydrogen can also be sent into the combustion device to generate high-temperature combustion products, the high-temperature combustion products are transported to the solid oxide electrolysis device, the gas raw material can be heated, high-temperature heat recovery is realized, and a high-grade heat source is provided for the solid oxide electrolysis device; therefore, the energy utilization efficiency of the system and the yield of the synthetic liquid fuel are remarkably improved.

This invention provides a methanol plant and a method for producing methanol. A first SOE (Self-Oxygenation Electrolysis) section is arranged to receive a carbon dioxide-rich feed and electrolyze it into a carbon monoxide-rich stream. A methanol circuit is arranged to receive at least a portion of the carbon monoxide-rich stream and a hydrogen-rich stream, and convert them into a crude methanol stream. A first H2O-rich stream is converted into a first vapor stream using heat from the electrolysis process in the first SOE section. The first vapor stream is used as heat for distilling the crude methanol stream in a methanol distillation section.

The application discloses a kind of self-adapting flameless combustion multi-pollutant collaborative control methods for electronic waste pyrometallurgical recovery two combustion chambers, it is related to the technical field of combustion control and pollutant generation in situ inhibition of electronic waste pyrometallurgical recovery.The combustible component flue gas is introduced into the front section of two combustion chambers, so that the combustible flue gas environment is formed in the front section of two combustion chambers;The auxiliary fuel is introduced into the front section of two combustion chambers in the form of axial injection, and the flameless distributed combustion main reaction zone is formed in the front section of two combustion chambers;In the rear end of two combustion chambers, the combustion-supporting medium is introduced in a staged oxygen-supplying manner, and the oxidation reaction of carbon monoxide and intermediate combustible components in the combustion products is completed through a high-temperature oxidation environment;Based on the temperature field distribution, oxygen concentration distribution and combustion incomplete component characteristic parameters in two combustion chambers, the fuel injection parameters and combustion-supporting medium staged supply parameters are adjusted, so that the overall combustion state in two combustion chambers is stably maintained in the flameless distributed combustion state.The application can improve the overall pollutant control stability and operation reliability of the system.

This invention relates to a method for the coupling production of C2 hydrocarbons and benzene from methane via carbon dioxide oxidation, belonging to the field of chemical production technology. Specifically, a mixture of methane and carbon dioxide is passed through a reactor equipped with a catalyst to produce C2 hydrocarbons and benzene, with carbon monoxide and water as byproducts. In this method, the selective production of C2 hydrocarbons and benzene is achieved by changing the type and composition of the catalyst and simultaneously adjusting the reaction conditions. This invention features a short process flow, simple operation, and uses an inexpensive, readily available, and stable catalyst, making it easy to scale up industrially and showing promising prospects for industrial application.

Provided is a technology capable of improving the generation efficiency of hydrocarbon gas. This generation system comprises: a generation unit for generating a hydrocarbon gas by means of a catalytic reaction based on hydrogen gas and carbon dioxide gas, and discharging a discharge gas containing hydrogen gas, carbon dioxide gas, and hydrocarbon gas; a first supply unit for supplying a first raw material gas containing hydrogen gas and carbon dioxide gas to the generation unit; a first acquisition unit for acquiring the amount of hydrogen gas and the amount of carbon dioxide gas contained in the first raw material gas; a second supply unit for separating the hydrogen gas and carbon dioxide gas from the discharge gas and supplying a second raw material gas containing the separated hydrogen gas and carbon dioxide gas to the generation unit; a second acquisition unit for acquiring the amount of hydrogen gas and the amount of carbon dioxide gas contained in the second raw material gas; and a control unit for controlling the amount of hydrogen gas and the amount of carbon dioxide gas contained in the first raw material gas based on the amount of hydrogen gas and the amount of carbon dioxide gas contained in the second raw material gas.

Provided herein are methods of producing iron compositions, methods of converting carbon dioxide from a process gas into carbon monoxide and hydrogen, and systems for producing iron compositions.

This invention discloses a one-stage treatment method for sintering flue gas; the reactor used includes a heat exchanger, a hot blast furnace, and a reaction device; the heat exchanger is provided with an inlet channel and an outlet channel. The heat exchanger is used to exchange the heat of the gas passing through the outlet channel to the inlet channel. The inlet channel of the heat exchanger, the hot blast furnace, the reaction device, and the outlet channel of the heat exchanger are connected in sequence. The reaction device is equipped with a Ce-Mn-based catalyst. The temperature of the input sintering flue gas is 160℃~220℃; the volume ratio of nitrogen oxides to carbon monoxide is 1:(10~20); and the gas hourly space velocity is 50000h. ‑1 ~60000h ‑1 This invention achieves multifunctional coupling of catalytic units through a single-stage synergistic catalysis process, completing the removal of CO and nitrogen oxides (NOx) from sintering flue gas in the same reactor. x The treatment of sintering flue gas reduces the cost of sintering flue gas treatment.

The present invention relates to a process and system for separating carbon monoxide from a syngas mixture having a high methane content by a cryogenic plant in which a partial condensation cycle is typically employed, and more particularly, to mixing methane-rich liquid exiting a distillation column with a lower boiling mixture, the boiling point of the mixed flow is lower than that of the methane-rich liquid.

Described herein are systems and methods for modulation based on carbon monoxide sensor data. Specifically, a sensor housing including a sensor may be provided within a heating appliance. The sensor may be configured to measure carbon monoxide levels within the heating appliance. A controller may process the data from the sensor to determine when the carbon monoxide levels rise above a threshold carbon monoxide level. When this condition occurs, the controller adjusts the operation of a component of the heating appliance in an attempt to reduce the carbon monoxide to satisfactory levels. For example, the controller may increase a speed of an inducer or may adjust a gas valve of the heating appliance.