210 results about "Carbon dioxide production" patented technology

The invention belongs to the technical field of equipment intelligent control, and discloses a multi-objective optimization intelligent control method for a combustion carbon dioxide production system. The method comprises the following steps: constructing a combustion mechanism model; training a combustion data model; fusing the combustion mechanism model and the combustion data model to obtain a dual-drive model, and determining an optimization target; a dual-drive model is adopted to simulate the garbage combustion process, the control strategy is optimized according to the optimization target, and combustion equipment is adjusted; the advantages of the two models are effectively fused, advantage complementation between the models is achieved, and therefore the physical interpretability and adaptability of the models are improved; in the control strategy optimization process, not only is the combustion efficiency considered, but also carbon emission and pollutant emission are considered, the combustion efficiency is improved, and the carbon emission and the pollutant emission are reduced, so that multi-target optimization of the combustion carbon dioxide production system is achieved, and the control strategy optimization efficiency is improved. And the environment-friendly performance and the economic performance of the garbage combustion carbon dioxide production system are improved.

The invention discloses preparation of a high-performance carbon matrix embedded iron-based catalyst based on a metal organic framework precursor and application of the high-performance carbon matrix embedded iron-based catalyst in reverse water-gas shift reaction. In the preparation process, commercially available 1, 3, 5-trimesic acid iron (the chemical formula is C9H3FeO6, abbreviated as Fe-BTC) is selected as a raw material, pyrolysis treatment is carried out in an argon atmosphere, then air passivation is carried out, and finally the high-performance carbon matrix embedded iron-based catalyst based on the metal organic framework precursor is successfully prepared. The MOF-600 has excellent performance in many catalysts, the carbon dioxide production rate reaches 24.0 mmol CO.gcat <-1 >. S <-1 > at the temperature of 400 DEG C in a reverse water gas shift reaction, the performance is remarkably superior to that of an existing non-noble metal catalyst, and extremely high catalytic efficiency and application potential are shown.

The invention relates to the technical field of sustainable aviation fuel preparation processes, and discloses a process for producing sustainable aviation fuel by capturing carbon dioxide of an industrial boiler with an industrial byproduct hydrogen, which comprises the following steps: S1, raw material pretreatment; s2, converting hydrogen and carbon dioxide in the raw materials into Fischer-Tropsch synthesis gas by using a catalyst; s3, converting the Fischer-Tropsch synthesis gas obtained in S2 into liquid alkane; s4, the liquid alkane obtained in S3 is subjected to hydroisomerization to generate sustainable aviation fuel, industrial by-products of hydrogen and carbon dioxide can be converted into the sustainable aviation fuel through the steps of Fischer-Tropsch synthesis, hydroisomerization and the like, the fuel can serve as a substitute of petroleum fuel, dependence on traditional petroleum resources is reduced, and the sustainable aviation fuel is obtained. According to the invention, not only can sustainable aviation fuel be produced, but also light products (C5-C8 alkanes) and heavy products (C16-C24 alkanes) can be generated, and the light products and the heavy products can be respectively used for further Fischer-Tropsch synthesis reaction and can be sold as automotive second-generation biodiesel.

The invention relates to construction of a Ralstonia strain capable of producing isobutanol by utilizing fructose and carbon dioxide and application of the Ralstonia strain. The construction method comprises the following steps: firstly, knocking out bkdA and bkdB genes in tricarboxylic acid cycle of the Ralstonia H16 to obtain a recombinant strain H1601; then, a PHB operator phaCAB in the H1601 is knocked out, and an alsS gene of bacillus subtilis and ilvC and ilvD genes of Ralstonia are introduced into the site, so that a recombinant strain H1602 is obtained. And finally, introducing yqhD and kivD gene expression cassettes of escherichia coli into the H1602, and constructing a recombinant strain H1603 capable of synthesizing isobutanol by using fructose and carbon dioxide. The strain can be used for synthesizing isobutanol through heterotrophic or autotrophic fermentation by taking carbon dioxide and fructose as carbon sources, the operation is simple and convenient, and higher yield can be obtained.

The present invention provides a method for producing synthetic fuel from water and carbon dioxide. The method includes the steps of (a) preparing water-derived hydrogen, (b) preparing carbon dioxide, (c) introducing the hydrogen and carbon dioxide into a first reaction to produce a first product comprising synthesis gas, (d) introducing the synthesis gas into a second reaction to produce a second product comprising syncrude, (e) dividing the syncrude oil into a plurality of fractions comprising a first fraction, (f) introducing at least one fraction of the plurality of fractions into a hydrogenation reaction to produce a third product, and (g) recovering a fraction corresponding to a boiling point range of the first fraction from the third product. The present invention also provides an aviation fuel produced by the method.

The utility model relates to the technical field of carbon dioxide production, and discloses a carbon dioxide production gas internal moisture drying mechanism which comprises a drying box body filled with a concentrated sulfuric acid solution. A rotating rod is rotationally connected between the top wall and the bottom wall in the drying box body, a plurality of stirring rods are fixedly connected to the lower end part, located in the concentrated sulfuric acid solution, of the rotating rod, a plurality of fixing boxes are fixedly connected to the upper end part, located in the concentrated sulfuric acid solution, of the rotating rod, and a fixing plate is inserted into each fixing box; a drying plate is arranged on the surface of each fixing plate, an air pump is fixedly installed on the side face of the drying box body, when the drying mechanism is used, moisture in carbon dioxide gas can be dried multiple times, the drying effect is better, meanwhile, the drying plates can be conveniently and rapidly replaced, and use is convenient.

The utility model relates to the field of carbon dioxide production, in particular to a liquefying device for carbon dioxide production, which comprises a bottom cavity and liquefying cavities, a circular truncated cone is arranged in the bottom cavity, a plurality of liquefying cavities are mounted on the upper end face of the circular truncated cone along the circumferential direction, branch pipes are arranged in the liquefying cavities, and connectors are mounted at the other ends of the branch pipes. A main pipe is installed on the upper end face of the connector, a control valve is installed on the outer side wall of the branch pipe, a liquid level sensor is arranged below the control valve, a control panel is installed on the end face of the left side of the bottom cavity, and the control panel is electrically connected with the liquid level sensor. And the problem that the interface is unstable and needs to be frequently overhauled and replaced due to over-high flowing speed of liquefied carbon dioxide is effectively relieved.

The present invention relates to a method for producing light magnesium carbonate and co-producing calcium carbonate by sequestering carbon dioxide using magnesium reduction slag, acidic ammonium salt solution and magnesium reduction slag are added to leaching reactor, stirring and controlling pH to be 8.5-10.5, after solid-liquid separation, the solution is passed into a precipitation reactor, and industrial flue gas is passed into stirring reaction, until the system pH drops to 8, solid-liquid separation, the obtained mother liquor is used as a leaching liquid to repeatedly extract the same batch of magnesium slag, and then the mother liquor obtained after repeated extraction is used as a leaching liquid to extract multiple batches of magnesium slag, until the magnesium ion concentration in the mother liquor is greater than 0.1M, solid-liquid separation, industrial flue gas is passed into and pH is controlled to be 7.3-8.5, solid-liquid separation after reaction, ammonia is added to the obtained mother liquor and industrial flue gas is passed into, the system pH is controlled to be 9-9.5, and finally solid-liquid separation, drying, obtain light magnesium carbonate. The method is low in cost, can achieve zero emission and high value application of magnesium reduction slag, and has strong operability and is easy to realize industrialization.

The utility model discloses a carbon dioxide filling station, which relates to the technical field of carbon dioxide production, and particularly comprises a placing table, a telescopic mechanism perpendicular to the top surface of the placing table is arranged above the placing table, the telescopic mechanism is connected with the placing table through an L-shaped bracket, a clamping mechanism for clamping and fixing a steel cylinder is arranged on the L-shaped bracket, and the clamping mechanism is connected with the placing table. A control cabinet is arranged on the side face of the L-shaped support, and a controller is arranged in the control cabinet. A U-shaped frame with a downward opening is installed at the bottom of the telescopic mechanism, and a first two-way lead screw is arranged in the U-shaped frame. When the carbon dioxide filling station is used, the height of the U-shaped frame is adjusted through the telescopic mechanism, the filling connector is connected to a valve of a steel cylinder in an abutting and pressing mode when the filling connector and the abutting and pressing block are close to each other, and therefore filling operation of carbon dioxide is conducted, the use adaptability of the filling station is improved, and the filling efficiency is improved. And convenience is provided for filling of carbon dioxide.

The utility model discloses a carbon dioxide production device convenient for non-condensable gas recovery, which comprises a purification box, the top of the purification box is communicated with a cooling box, one side of the cooling box far away from the purification box is communicated with a purification box, the bottom of the purification box is communicated with a gas inlet pipe, and the top of the purification box is communicated with an exhaust pipe. Condensing plates are fixedly connected to the two sides of the inner wall of the cooling box at equal intervals, the condensing plates located on the two sides of the inner wall of the cooling box are arranged at intervals, and refrigerating pipes are embedded in the condensing plates. The utility model relates to the technical field of carbon dioxide production, and solves the problems that in the prior art, when moisture contained in non-condensable gas is condensed, a condensation pipe or a condensation plate for heat conduction adopts a smooth surface, and the surface area of a condensation assembly is small, so that the circulation speed of the non-condensable gas is high, the condensation efficiency of water vapor is low, and the condensation effect is poor. A large amount of dehydrating agent needs to be consumed for dehydration, and the dehydrating agent needs to be frequently replaced, so that the production efficiency of carbon dioxide is influenced.

The invention relates to a method for producing carbon in solid form from CO2 in gaseous form using a conversion apparatus (1) having a conversion chamber (3) accommodating a fluid mass of catalysing liquid metal (7) capable of catalysing conversion of CO2 into oxygen gas and solid carbon, wherein the conversion chamber (3) is heated and the liquid metal (7) therein is vibrated. Gas comprising CO2 is caused to flow through the heated conversion chamber (3) between an inlet (4) and an outlet (5) thereof while making contact with the vibrating fluid mass of catalysing liquid metal (7) in the conversion chamber to thereby cause CO2 in the gas to convert, at an interface between the gas and the vibrating fluid mass of catalysing liquid metal, into oxygen gas and solid carbon. The invention also relates to such a conversion apparatus (1).

The invention relates to a method for simultaneously preparing high-purity carbon dioxide and nitrogen by using flue gas, which is characterized in that flue gas is used as a raw material, and the high-purity carbon dioxide and nitrogen are economically and conveniently obtained by dedusting, removing impurities such as oxygen, hydrocarbon, hydrogen, CO and the like and reasonably utilizing heat of purification treatment. Belongs to the technical field of carbon capture, waste gas treatment and resource utilization. The method mainly comprises the following six parts: fine removal and dust removal, heat exchange and low-pressure steam production, pretreatment, carbon-nitrogen separation, high-purity nitrogen production and high-purity carbon dioxide production. A mature organic amine method is used for carbon-nitrogen separation, a PSA method is used for high-purity nitrogen refining, and a low-temperature liquefaction method is used for liquid carbon dioxide. On the whole, high-purity carbon dioxide and nitrogen which can be used for chemical synthesis and industrial utilization are obtained through deep impurity removal of flue gas, reasonable configuration of the technological process and comprehensive utilization of heat generated by deoxidation, and 0.3 MPa saturated steam lt is supplemented by a carbon-nitrogen separation unit; 0.9 ton / tCO2, and the loss of the organic amine sold in the market is 1t; and 0.5 kg / t of CO2.

The present invention provides a bicarbonate production method suitable for producing a high purity bicarbonate while suppressing loss of carbon dioxide. The bicarbonate production method includes a generation step of generating a bicarbonate by using a mixed gas that contains carbon dioxide, and a concentration of the carbon dioxide in the mixed gas is 30 volume% or more and 95 volume% or less in a standard state.

A method for producing a synthetic fuel from hydrogen and carbon dioxide comprises extracting hydrogen molecules from hydrogen compounds in a hydrogen feedstock to produce a hydrogen-containing fluid stream; extracting carbon dioxide molecules from a dilute gaseous mixture in a carbon dioxide feedstock to produce a carbon dioxide containing fluid stream; and processing the hydrogen and carbon dioxide containing fluid streams to produce a synthetic fuel. At least some thermal energy and / or material used for at least one of the steps of extracting hydrogen molecules, extracting carbon dioxide molecules, and processing the hydrogen and carbon dioxide containing fluid streams is obtained from thermal energy and / or material produced by another one of the steps of extracting hydrogen molecules, extracting carbon dioxide molecules, and processing the hydrogen and carbon dioxide containing fluid streams.

A method of converting CO2 gas produced during industrial processes comprising contacting methanogenic archaea with the CO2 gas under suitable conditions to produce methane.

The application discloses a production device and method for enhancing carbon dioxide production, belonging to the technical field of carbon dioxide preparation, which comprises a buffer tank, a compression device, a desulfurization device, a refining device, a liquefaction device, a purification device, a storage bottle, pipeline one, pipeline two, pipeline three, pipeline four, pipeline five, pipeline six, the buffer tank is connected with the compression device through the pipeline one, the desulfurization device is connected with the compression device through the pipeline two, the refining device is connected with the desulfurization device through the pipeline three, the liquefaction device is connected with the refining device through the pipeline four, the purification device is connected with the liquefaction device through the pipeline five, and the purification device is connected with the storage bottle through the pipeline six; the produced liquid carbon dioxide has a purity of 99.9%, and the production has high purity and high efficiency.

The utility model relates to carbon dioxide manufacturing technical field provides a kind of for carbon dioxide production's adsorption tower drying system to handle original carbon dioxide gas, and original carbon dioxide gas refers to the gas with moisture and alcohol after not passing through pre rectification tower rectification treatment, including the first adsorption tower and second adsorption tower of the first heating regeneration component, second heating regeneration component being set respectively, first adsorption tower and second adsorption tower are connected in parallel between liquefier and pre rectification tower;First heating regeneration component and second heating regeneration component all include the molecular sieve of array setting and adsorbent fixed between adjacent molecular sieve, and the heating regeneration process in first adsorption tower and second adsorption tower is independent of each other.The utility model is according to the process of " one open one spare " independent participation handles original carbon dioxide gas, and alcohol removal water in a adsorption tower, not only simplify the treatment process before carbon dioxide gas liquefaction, and improve the alcohol removal efficiency of adsorption tower.

Processes for preparing synthetic hydrocarbons are disclosed herein. An aspect of the process comprises: electrolyzing a feed stream comprising steam and CO2 with a H2O / CO2 (S / C) molar ratio greater than about 2.0 in a high-temperature co-electrolyzer apparatus operating at a co-electrolyzer temperature to produce an enhanced hydrogen rich syngas having a first concentration of H2, removing at least a portion of H2 from the enhanced hydrogen rich syngas to provide a hydrogen rich syngas having a second concentration of H2 that is lower than the first concentration of H2, and producing at least an FT product stream that comprises synthetic hydrocarbons by reacting the hydrogen rich syngas in a Fischer-Tropsch (FT) reactor. Processes for reducing methane and soot content during production of an enhanced hydrogen rich syngas are also disclosed.

The present disclosure relates to systems and methods useful for providing one or more chemical compounds in a substantially pure form. In particular, the systems and methods can be configured for separation of carbon dioxide from a process stream, such as a process stream in a hydrogen production system. As such, the present disclosure can provide systems and method for production of hydrogen and / or carbon dioxide.

This invention discloses a device for regulating oxygen content in a photophytic aquatic body, comprising a culture tube equipped with a light source assembly, a pneumatic piston assembly at the bottom of the culture tube including a dual-function air pump for charging and suction, and a piston plate slidably disposed inside the culture tube; an air box at the top of the culture tube, equipped with a carbon dioxide introduction mechanism and an oxygen removal mechanism. The piston plate reciprocates to circulate the algal solution, facilitating the transfer of oxygen produced by microalgae photosynthesis into the air box. When the oxygen concentration in the air box exceeds a set value, the piston plate automatically accelerates its movement. This accelerated movement of the piston plate also triggers the oxygen removal mechanism to expel the oxygen produced in the air box more quickly, thus regulating the oxygen content and preventing excessive oxygen consumption and carbon dioxide production caused by excessively high oxygen-to-gas mixture concentrations in the air box.

An apparatus is adapted for the production of formate from carbon dioxide. The apparatus includes a reactor including a reduction cell and a production cell and a formate dehydrogenase catalyst immobilized in the production cell. A cathode solution circulates through the reduction cell and the production cell. The cathode solution includes a charge carrier. An anode solution circulates through the anode compartment. The charge carrier is reduced in the reduction cell and reoxidized in the production cell. The carbon dioxide is converted to formate in the production cell.

To provide a novel method for producing methanol that enables easy production of high-purity methanol from carbon dioxide.SOLUTION: A method for producing methanol comprises an oxidation step in which a first material containing an oxygen carrier is contacted with carbon dioxide and hydrogen to yield a second material containing an oxide of the oxygen carrier and methanol.SELECTED DRAWING: Figure 1

The present invention relates to a device / method for capturing / converting CO2, comprising a CO2 capture unit (2) producing CO2 (3), a water electrolysis unit (5) converting water (4) to oxygen (6) and hydrogen (7), a RWGS unit (8) treating the CO2 with hydrogen to produce a CO2- and water-rich RWGS gas (9), a FT unit (13) converting the RWGS gas to produce a FT effluent (14), a first separation unit (15) treating the FT effluent to produce a hydrocarbon effluent (17) and a gaseous effluent (33), a second separation unit (34) separating the gaseous effluent into a CO2-depleted gas (18) and a CO2-rich gas (35) sent to the RWGS unit, a partial oxy-combustion unit (28) oxidizing the CO2-depleted gas to produce CO sent to the FT unit, which is sent to the RWGS unit, and a hydrogen unit (20) treating the hydrocarbon effluent to produce a hydrocarbon fraction (21).

The application discloses a kind of liquid carbon dioxide production soft polyurethane foam static mixing equipment, specifically relates to soft polyurethane foam production field, including: mixing mechanism, mixing mechanism includes multiple in vertical direction sequentially connected mixing cylinder, multiple mixing cylinder are all provided with helical blade, the top of the uppermost mixing cylinder is provided with feed pipe, feed pipe includes two feed ends, the bottom of the lowermost mixing cylinder is provided with discharge pipe, material enters by two feed ends, and sequentially through multiple vertical sequentially connected mixing cylinder is mixed after being discharged by discharge pipe.The application is provided with booster mechanism between adjacent two mixing cylinders, realizes the effect of segmented pressurization, so that it can be segmented pressurization, solve because the stroke is long, the pressure loss of liquid carbon dioxide and polyether when flowing causes its flow rate to reduce, and then cause polyether to easily stick on the problem of helical blade in mixing process.

A beverage carbonating device includes a carbon dioxide production unit and a pressure container. The carbon dioxide production unit produces carbon dioxide gas by mixing at least two reactants. The pressure container stores the produced carbon dioxide gas in a pressurized gaseous state. As a detachable module, the pressure container is sealingly detachable from the carbon dioxide production unit. Accordingly, the carbon dioxide gas is stored and sealed in the pressure container when detached from the carbon dioxide production unit. Further, a beverage vessel is used with the beverage carbonating device.

System for producing high-quality synthesis gas from household waste and carbon dioxide, characterized in that it comprises: a feeder (1), a dryer (2), a low-temperature pyrolysis reactor (3), a medium-temperature pyrolysis reactor (4) and a high-temperature pyrolysis reactor (5) connected in series; wherein the pyrolysis gas outlets of the low-temperature pyrolysis reactor (3) and the medium-temperature pyrolysis reactor (4) are successively connected to a dechlorination device (9) and a combustion chamber (8); wherein the flue gas outlet of the combustion chamber (8) is successively connected to the flue gas lines of the high-temperature pyrolysis reactor (5), the medium-temperature pyrolysis reactor (4) and the low-temperature pyrolysis reactor (3) as well as to the flue gas cleaner (10); The synthesis gas outlet of the high-temperature pyrolysis reactor (5) is successively connected to a heat exchanger (7) and a dryer (2).

1. A method comprising: (i) providing a gas stream comprising greater than 1% by volume of carbon dioxide; (ii) providing water; (iii) converting the carbon dioxide and the water into an organic intermediate and oxygen gas in the presence of light; (iv) separating the oxygen gas from the organic intermediate; and (v) after separating the oxygen gas from the organic intermediate, converting the organic intermediate to ethylene and carbon dioxide.

The utility model relates to a heavy component removal device in food-grade carbon dioxide production. The heavy component removal device comprises a feed gas inlet, a molecular sieve heavy component removal unit, a first condenser, a first gas-liquid separator and a distillation tower, the molecular sieve heavy component removal unit is connected with the feed gas inlet; the first condenser is connected with the molecular sieve heavy component removal unit; the first gas-liquid separator is connected with the first condenser, and a light component discharge port is formed in the first gas-liquid separator; and the distillation tower is connected with the first gas-liquid separator. On the premise that the operation cost is not increased, the use amount of an adsorbent in the molecular sieve heavy component removal unit is reduced, the regeneration frequency is reduced, the energy consumption is reduced, deep removal of heavy components can be ensured, and the grade of product quality is improved.

The utility model relates to the technical field of chemical equipment, in particular to a purifying tower for carbon dioxide production, which comprises a tank body and an adsorbent module. An access hole with a cabin door is formed in the side wall of the tank body. A mounting frame of the adsorbent module is in sliding connection with the tank body and can enter and exit from the adsorption cavity through the access hole, a plurality of layers of supporting plates are arranged on the frame, and an adsorbent storage box can be placed on each layer. After impurity-containing carbon dioxide gas enters the adsorption cavity, the adsorbent adsorbs the impurities to purify carbon dioxide, such as activated carbon and a molecular sieve. The adsorbent needs to be replaced after being used for a period of time, a cabin door is opened to slide out the mounting rack, the adsorbent storage box is conveniently replaced or the adsorbent is treated, and the mounting rack slides in to continue working after completion. The design does not need complex disassembly, shortens the maintenance time, and improves the maintenance and production efficiency. In addition, the layout of multiple layers of supporting plates makes full use of space, the adsorbent loading capacity is increased, different adsorbents are convenient to manage and replace, and the purification capacity is improved.

The invention relates to a method for producing phosgene, in particular to a method for producing organic isocyanate by reacting phosgene with an organic amino compound. In the process, at least one gas stream of carbon dioxide, which has been formed by the hydrolysis of organic modified carbamates, and which may have been released by secondary components, is reduced to carbon monoxide. The generated carbon monoxide reacts with chlorine in phosgene synthesis to generate phosgene. The organically modified carbamates used in the method can preferably be obtained from the chemical decomposition of scrapped polyurethane materials, in particular using alcohols, ammonia or amino alcohols as chemical decomposition agents.