136 results about "Carbon dioxide production" patented technology

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.

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.

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.

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.

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 present application belongs to the technical field of fermentation products and its preparation, and particularly relates to a bubble fermented milk with thixotropy and a preparation method thereof. The bubble fermented milk is prepared by fermenting raw milk and a gas production regulator by kefir bacteria, wherein the protein content of the raw milk is 2.3% to 3.8%, and the gas production regulator is used to adjust the carbon dioxide production in the fermentation process of the kefir bacteria, so that the fermented milk contains micro-bubbles, and the amount of the micro-bubbles makes the pressure of the bubble fermented milk in a closed container greater than or equal to 0.028 MPa. The bubble fermented milk changes from a solid state to a liquid state after shaking. The present application constructs a bubble-protein network composite structure and accurately controls the gas production, so that the product presents a smooth and particle-free liquid taste after shaking, and the synergy of the bubble feeling and the thixotropy is balanced.

This apparatus for producing carbon dioxide is provided with: an anode which is provided on one side of an electrolyte membrane and generates protons from hydrogen; a cathode which is provided on the other side of the electrolyte membrane and generates hydrogen; a first liquid chamber which is provided between the anode and the electrolyte membrane and to which a first electrolyte solution that has absorbed carbon dioxide is supplied; and a second liquid chamber which is provided between the electrolyte membrane and the cathode and to which a second electrolyte solution is supplied. The anode is supplied with a gas that has a hydrogen concentration of less than 99 vol%.

The utility model provides a sealed animal treadmill system which comprises an integrally sealed treadmill box body, a silica gel sealing ring and a presser lock catch are arranged on the edge of the treadmill box body, and internal sealing is achieved through extrusion of the silica gel sealing ring and the presser lock catch so as to monitor carbon dioxide output and oxygen consumption. Transparent observation windows are arranged on the top and the side face and used for observing the motion state of animals in the running machine in real time from the outside; and the ventilation interface is used for extracting gas exhaled by animals as sampling gas and sending the sampling gas to the sensor analysis module, and the gas which is not extracted is discharged through a vacuum pump. According to the utility model, the silica gel sealing ring is tightly matched with the presser lock catch, so that the integral sealing inside the treadmill is realized, the gas leakage is effectively prevented, the real-time monitoring data of the carbon dioxide generation amount and the oxygen consumption amount are ensured to be accurate, and a reliable experimental environment is provided for scientific research.

The present invention describes a device for extracting carbon dioxide from a gaseous medium, comprising a first air flow channel for a dried gaseous medium, a second air flow channel for exhaust air, and at least one rotatable sorption unit comprising at least one sorption agent for the physical absorption of carbon dioxide. The at least one rotatable sorption unit is controlled by the first air flow channel, and the second air flow channel removes the exhaust air from the rotating sorption unit. Furthermore, a method for extracting carbon dioxide and the use of the device and the method are disclosed.

The invention relates to the production of building products with enhanced strength and can be used in the building industry to produce various building products. More particularly, the invention relates to the field of producing carbon-cured products from metallurgical process waste and carbon dioxide. The technical result of the invention consists in increasing the strength characteristics of building products. Moreover, this technical result can be achieved without increasing energy consumption or material intensity. The technical result is achieved as a result of a method of producing high-strength carbonated building products which includes preparing and mixing raw materials, specifically mineral raw materials and metallurgical process waste, adding water, moulding, carrying out forced carbonation and subsequently holding the resulting products in an aqueous environment for a period of from 12 to 28 days.

The present invention relates to a process for producing methane from carbon dioxide, in which a gas mixture of carbon dioxide and a proportion of gases inert with respect to the conversion of carbon dioxide to methane is converted to methane in a fixed-bed reactor filled with a metal-modified zeolite with the addition of hydrogen gas. It also relates to the use of metal-modified zeolites for producing methane from corresponding gas mixtures. Compared to a conventional process for producing methane, the elimination of gas separation and the adsorption of the reaction water in the reactor significantly increases the degree of conversion of CO2 to methane and thus the efficiency of the process.The present invention further relates to a system comprising a device, during the intended operation of which a gas mixture of carbon dioxide and gases inert with respect to the conversion of carbon dioxide to methane is formed, and a fixed bed reactor which is filled with a metal-modified zeolite, and wherein the fixed bed reactor is connected to the device in such a way that gases formed during operation of the device are introduced into the fixed bed reactor via the feed line for carbon dioxide-containing gases.

The utility model relates to the technical field of chemical equipment, in particular to a carbon dioxide production line pipeline gas leakage detection device which is composed of a carbon dioxide detector, a clamping mechanism and a telescopic mechanism. The clamping seat of the clamping mechanism is provided with the placing groove, so that the detector can be stably fixed in the placing groove, shaking and displacement during working are avoided, and a foundation is laid for accurate detection. The telescopic mechanism comprises a first sleeve and a telescopic rod which are sleeved with each other, and one end of the telescopic rod is rotationally connected with the clamping base. The telescopic rod can stretch out and draw back in the first sleeve to drive the clamping base and the detector to move, and the angle can be adjusted. By means of the design, the detector is large in adjustment range in the spatial position, the distance between the detector and a detection target can be changed, the detector can cope with complex environments and align to detection points in different directions, and the applicability and detection comprehensiveness of the device are remarkably improved.

Process for the production of syngas from carbonaceous waste material and CO2 comprising the following stages: a stage a) comprising the reaction [R1] in which the carbonaceous material is reacted with carbon dioxide to obtain carbon monoxide according to the following reaction scheme: [R1] CO2 + C = 2 CO; a stage b) of producing H2 and adding it to the carbon monoxide obtained in stage a) to obtain syngas, wherein stage b) comprises at least one of the following stages: bl) the carbon monoxide from the previous stage is reacted with water vapour to obtain carbon dioxide and hydrogen according to the following reaction scheme: [R2] CO + H2O = CO2 + H2 b2) producing hydrogen by means of electrolysis of water, which is added to the carbon monoxide from stage a). The invention also relates to the unit in which stages a) and bl) are conducted as well as the related apparatus comprising the aforementioned unit.

The utility model discloses a carbon dioxide production technology in methanol removal device, including the casing, the top fixedly connected with the shell cover of casing, the both sides of casing are linked with the air inlet pipe and exhaust pipe respectively, the inside of casing is provided with filter screen and guide pipe, be provided with connecting structure between guide pipe and air inlet pipe, the connecting mechanism includes connecting seat, handle, sliding slot, sliding block, clamping block and spring. The utility model relates to the technical field of carbon dioxide production, and this carbon dioxide production technology in methanol removal device, through the cooperation between sliding slot, sliding block, clamping block, spring, first deflector and second deflector, realizes and removes methanol fully, solves the phenomenon that methanol cannot fully contact between active carbon filter screen due to the flow rate of carbon dioxide in the casing is relatively fast, causes methanol removal thoroughly, thereby reduce the removal device's removal carbon dioxide internal methanol effect problem.

The utility model relates to the technical field of carbon dioxide production equipment, in particular to a carbon dioxide gas cylinder fixing device which comprises a supporting structure and an anti-skidding structure, the supporting structure is provided with a supporting plate, the two sides of the supporting plate are bent upwards to form two supporting parts, and the anti-skidding structure is arranged on the supporting plate. U-shaped groove holes are formed in the upper ends of the two supporting parts respectively. The circle centers of the two U-shaped groove holes are collinear; bottle necks on the two sides of the double-valve steel cylinder can be placed in the U-shaped groove holes so that the double-valve steel cylinder can be horizontally fixed, the anti-skid structure and the supporting plate are detachably connected, and the anti-skid structure is used for fixing the supporting structure to the workbench. The supporting structure is prevented from sliding. Through the structural design, the double-valve steel cylinder can be rapidly taken and placed, and practicability and convenience are good.

The invention provides a breathing heat metabolism detection system and method, and the system is characterized in that a breathing gas circuit is connected with a host, and is provided with a first flow meter; the first flowmeter is used for acquiring the breathing flow rate; an array type sensor is arranged in the host, and the environment gas concentration and the human body exhaled gas concentration are detected based on the array type sensor; wherein the array sensor comprises an environment sensor and a measurement sensor; detecting oxygen concentration and carbon dioxide concentration of ambient air based on an environment sensor; detecting an oxygen concentration and a carbon dioxide concentration of the exhaled gas based on the measurement sensor; on the basis of the obtained breathing flow rate, the oxygen concentration of the ambient air, the carbon dioxide concentration of the ambient air, the oxygen concentration of the exhaled gas and the carbon dioxide concentration of the exhaled gas, the breathing oxygen consumption and the carbon dioxide generation amount of the human body are calculated through a signal collecting and processing module; the human body energy metabolism condition is indirectly measured based on the human body breathing oxygen consumption and the carbon dioxide generation amount.

The utility model relates to the technical field of pneumatic superchargers, and discloses a supercharging device for carbon dioxide production, which comprises a box body, the pressurizing assembly comprises a moving plate arranged in the box body, pressurizing air bags fixed to the two sides of the moving plate and a driving motor arranged above the box body, a threaded rod used for driving the moving plate to move is fixedly installed at the output end of the driving motor through screws, and the threaded rod is in threaded connection with the moving plate; according to the pressurizing device for carbon dioxide production, the pressurizing assembly moves up and down along with the moving plate, then the bidirectional pressurizing effect is achieved, accordingly, the pressurizing efficiency is improved, the carbon dioxide pressurizing effect is achieved by extruding the pressurizing air bag, and the pressurizing efficiency is improved. Due to the wrapping design of the pressurizing air bag, the pressure relief condition caused by abrasion is effectively avoided, and the pressurizing effect is improved.

The invention discloses a supported copper-based nanorod heterojunction photocatalyst as well as a preparation method and application thereof. The heterojunction composite photocatalytic material provided by the invention comprises the following components: a carrier copper bismuthate nanorod and ZIF-67 on the surface of the carrier copper bismuthate nanorod. The preparation method comprises the following steps: adding a copper source and a bismuth source into water, and carrying out hydrothermal reaction to obtain a copper bismuthate nanorod CuBi2O4; mixing the obtained copper bismuthate nanorod with a cobalt source and an imidazole compound, stirring, and growing a ZIF-67 dodecahedron on the surface of the copper bismuthate nanorod in situ to obtain the heterojunction composite photocatalytic material ZIF-67 / CuBi2O4. The ZIF-67 / copper bismuthate heterojunction photocatalyst prepared by the invention has good photosensitivity, and can meet the requirement of producing methane by photocatalytic reduction of carbon dioxide; as a heterojunction composite photocatalytic material, the material has good photoelectrochemical properties, and can meet the requirements of efficient photoelectric conversion, wide spectral response, long cycle life and the like.

The invention discloses a method for producing bioethylene by using carbon dioxide, and relates to the technical field of genetic engineering. A recombinant expression bacterium is obtained by transferring an ethylene forming enzyme coding gene efe with a nucleotide sequence as shown in SEQ ID NO.1 into a recombinant bacterium, and the obtained recombinant expression bacterium can express an ethylene synthase gene and stably inherit the ethylene synthase gene, so that a large batch of CO2 is absorbed, fixed and converted into bioethylene. The recombinant expression strain constructed by the invention can be used for producing bioethylene, a new carbon sequestration pathway is provided, the concentration of greenhouse gases can be effectively reduced, global warming can be relieved, the generated ethylene can also realize resource utilization of wastes, and the practical value is remarkable.

The utility model provides a rectifying and purifying device for high-purity carbon dioxide, which relates to the technical field of carbon dioxide production equipment, and comprises a rectifying tower body, the inner wall of the rectifying tower body is provided with fixed insertion holes, and a plurality of tower plate structures are arranged in the rectifying tower body. The tower plate structures are arranged in the height direction of the rectifying tower body, a connecting assembly is arranged between every two adjacent tower plate structures, the connecting assemblies are used for connecting every two adjacent tower plate structures, and the top side of the uppermost tower plate structure is connected with a connecting rod; by arranging the fixing inserting holes, the connecting rods, the connecting assemblies and the fixing assemblies, the operation of mounting and dismounting the tower plate structure is simple and convenient, the two adjacent tower plate structures can be conveniently separated, the operation of dismounting and mounting the tower plate structure is simple and convenient, the efficiency of maintaining or replacing the tower plate structure is high, and the practicability is high. And the production progress and the economic benefits of enterprises are ensured.

The group of inventions relates to a method and plant for producing urea from by-products of oil or gas refining and can be used in the chemical industry and in the production of fertilizers. What is proposed is a method for producing urea which includes a) a stage of dehydrogenating hydrocarbons at oil or gas refining facilities to produce a hydrogen-containing gas, during which carbon dioxide is separated from the flue gases from the dehydrogenation process furnaces; b) a stage of steam-air reforming the hydrogen-containing gas to produce a converted gas; c) a stage of converting carbon monoxide and separating carbon dioxide from the converted gas to produce a synthesis gas; d) a stage of producing ammonia from the synthesis gas produced in stage c); and e) a stage of producing urea from the ammonia produced in stage d) and the carbon dioxide produced in stages a) and c). Also proposed is a plant for producing urea. The technical result of the group of inventions is an increase in the energy efficiency and environmental friendliness of technology for producing urea from by-products of oil and gas refining, together with a reduction in metal consumption, specific energy consumption and specific fuel gas consumption, in addition to which, the residual content of unconverted hydrocarbons after steam-air reforming is not more than 1 vol.%.