614 results about "High carbon dioxide" patented technology

Ultra cleaning of combustion gas to near zero concentration of residual contaminants followed by the capture of CO2 is provided. The high removal efficiency of residual contaminants is accomplished by direct contact cooling and scrubbing of the gas with cold water. The temperature of the combustion gas is reduced to 0-20 degrees Celsius to achieve maximum condensation and gas cleaning effect. The CO2 is captured from the cooled and clean flue gas in a CO2 absorber (134) utilizing an ammoniated solution or slurry in the NH3—CO2H2O system. The absorber operates at 0-20 degrees Celsius. Regeneration is accomplished by elevating the pressure and temperature of the CO2-rich solution from the absorber. The CO2 vapor pressure is high and a pressurized CO2 stream, with low concentration of NH3 and water vapor is generated. The high pressure CO2 stream is cooled and washed to recover the ammonia and moisture from the gas.

A process is provided to produce water that will meet the specifications of the United States Pharmacopeia Inc. for Purified Water and Water for Injection, and water for dialysis as circumscribed by the American Association for Advancement of Medical Instrumentation (AAMI). The system has no storage tanks where stagnant water will be fouled by biofilm colonizing the tank surface. Water is circulated throughout the purification system and drawn as required, on demand. The water is purified and used immediately or recycled and repurified to ensure quality. Sanitation of the purification system, maintaining microbiological purity and cleaning is done by controlling the pH so that it is normally acidic by maintaining a high carbon dioxide concentration in solution, the carbon dioxide being allowed to pass into the permeate from a reverse osmosis membrane assembly used to purify the water.

A carbon supplementing apparatus for supplying carbon dioxide efficiently in micro-algae culturing tank, its usage and use are disclosed. A vertical baffle plate is installed above in the container with 10-50 cm gap, gas distributor is arrange at bottom of tank, the apparatus is built-in the bottom of tank, whose upper edge is aligned with the tank bottom, baffler plate is above culturing level of tank so as to pass culturing fluid to the apparatus with agitator driven. It has longer vapor-liquid contact time, more vapor-liquid contact area and higher carbon dioxide efficiency.

A molten carbonate fuel cell, operating method of the fuel cell, sintering furnace equipped with the fuel cell, and power generator, wherein a cathode gas with a high carbon dioxide concentration can be obtained without a process of increasing the carbon dioxide concentration, and the heat of furnace exhaust gas can be effectively reclaimed and the fuel consumption can be reduced. The cathode gas is a gas containing a furnace exhaust gas discharged from an industrial furnace for heating materials, a mixed gas of the furnace exhaust gas and a gas for cathode use or a preheated gas for cathode use, which is a gas for cathode use preheated using the furnace exhaust gas as a heating source, or the preheated gas for cathode use, and the carbon dioxide concentration of the cathode gas is 0.1-50 vol %.

The invention discloses a catalyst for synthesizing methanol through carbon dioxide hydrogenation, which is composed of oxides, wherein measured by metals, the mole ratio of various metals is as follows: [n(Cu)+n(Zn)+n(MA)]:[n(Al)+n(MB)]=2-15, n(Cu):n(Zn)=0.5-4, n(MA):n(Zn)=0-1, and n(MB):n(Al)=0-9, MA represents monovalent or divalent metal ions, and MB represents trivalent or tetravalent metal ions. The catalyst has the advantages of high carbon dioxide conversion ratio, good methanol selectivity and high methanol yield.

A system for processing oil from algae is disclosed. Specifically, the system recycles byproducts of the process for use as nutrients during algae growth and oil production. The system includes a conduit for growing algae and an algae separator that removes the algae from the conduit. Also, the system includes a device for lysing the algae and an oil separator to remove the oil from the lysed matter. Further, the system includes a biofuel reactor that receives oil from the oil separator and synthesizes biofuel and glycerin. Moreover, the algae separator, oil separator and biofuel reactor all recycle byproducts back to the conduit to support further algae growth.

A system for processing oil from algae is disclosed. Specifically, the system recycles byproducts of the process for use as nutrients during algae growth and oil production. The system includes a conduit for growing algae and an algae separator that removes the algae from the conduit. Also, the system includes a device for lysing the algae and an oil separator to remove the oil from the lysed matter. Further, the system includes a biofuel reactor that receives oil from the oil separator and synthesizes biofuel and glycerin. Moreover, the algae separator, oil separator and biofuel reactor all recycle byproducts back to the conduit to support further algae growth.

Contemplated plants and methods for NGL recovery from feed gases having a carbon dioxide content equal or greater than about 2% employ temperature control configurations that allow high-level and flexible recovery of ethane and heavier components while avoiding freezing of the carbon dioxide in the process. Where the feed gas has a significant fraction of C3+ components and moderate carbon dioxide content, a single column configuration with an intermediate reflux condenser may be used, while two-column configurations may be used for feed gases with high carbon dioxide content and relatively low C3+ component concentration.

The invention discloses an ozone-assisted method for catalytic decomposition of volatile organic pollutants in high-temperature flue gas. According to the invention, ozone gas is introduced into a fixed bed reactor of a catalytic reaction. According to the catalyst in the fixed bed reactor, carbon nano-tubes, activated carbon, titanium dioxide, silica, or a composition thereof is adopted as a carrier; and Mn2O3, MnO2, CeO2, CuO, Cu2O, V2O5, Fe2O3, FeO, or a composition thereof is adopted as an active component. The active component accounts for 1-50% of total mass of the catalyst. The concentration of the introduced ozone gas is in a range of 0.1-50mg / L. According to the invention, a strong oxidant ozone is introduced in a catalytic decomposition process, such that active oxygen in the system is increased, catalytic decomposition of pollutant molecules is promoted, catalytic decomposition efficiency of the catalyst upon the volatile organic pollutants is substantially improved, and carbon dioxide selectivity is greatly improved. Therefore, an optimal effect of volatile organic pollutant low-temperature catalytic decomposition is achieved.

The invention discloses an electrolytic tank and application for an electrochemical reduction reaction of carbon dioxide. The electrolytic tank comprises a cathode chamber, an anode chamber and a gas-liquid separator, wherein the cathode chamber is divided into an upper cavity and a lower cavity; the lower cavity is a container with an open upper end, and the upper cavity is a container with an open lower end; the upper cavity is disposed above the lower cavity; first flange plates are disposed at the opening ends of the two cavities respectively; the two cavities are connected through the first flange plates. Compared with a traditional H-type electrolytic tank, the electrolytic tank can remarkably increase the converting rate of the carbon dioxide and improve electrochemical reaction speed and is easy to operate, and the calculation is convenient.

The invention discloses a catalyst for synthesizing methanol through CO2 hydrogenation, comprising Cu, Zn, Al, X, halogen and oxygen elements, oxides and halides, wherein the molar ratio of [Cu+Zn+MA] to [Al+Mb] is 2-18; the molar ratio of Cu to Zn is 0.5-5; the molar ratio of MA to [Cu+Zn] is 0-5; the molar ratio of MB to Al is 0-9; the molar ratio of halogen to Al is 0.05-5; MA and MB cannot be 0 at the same time; MA represents a mono-valent or divalent metal ion in X; MB represents a trivalent and / or tetravalent metal ion in X; X is one or a combination of more elements of Li, K, Mg, B, Ga, In, transition metal elements and rare-earth metal elements. The catalyst has the advantages of high carbon dioxide conversion rate, good methanol selectivity and high methanol yield.

Contemplated NGL plants include a feed gas bypass circuit through which a portion of the feed gas is provided downstream to a vapor portion of the feed gas to thereby increase turbo expander inlet temperature and demethanizer temperature. Contemplated configurations are especially advantageous for feed gases with relatively high carbon dioxide content as they entirely avoid carbon dioxide freezing in the demethanizer, provide additional power production by the turboexpander, and recover C2+ components to levels of at least 80% while achieving a low carbon dioxide content in the NGL product.

The invention discloses a carbon dioxide foam stabilizer suitable for low-permeability oil deposit, which is prepared from modified guargum, hydroxyethyl cellulose and lauryl alcohol, wherein the mass ratio of the modified guargum to the hydroxyethyl cellulose to the lauryl alcohol is 4 to 1 to 1. The invention is used for enhancing the stability of carbon dioxide foams, thereby the carbon dioxide foam stabilizer can plug a test well gas channeling passage, improve gas suction and a liquid generating section plane, reduce the gas-oil ratio, solve the problem of gas channeling emerged from low-permeability oil deposit gas injection development and provide technical support for the low permeable oil deposit gas injection development.

A strengthening and regenerating system for a carbon dioxide capturing solution comprises a regeneration tower, a reboiler, a supersonic generator panel, a supersonic controller, a pressure sensor, a liquid position sensor, and a temperature sensor; rich liquor from an absorption tower enters the regeneration tower from the top part of the regeneration tower, then flows to the bottom part of the regeneration tower, enters the reboiler, absorbs the thermal energy there, and then is returned to the regeneration tower; when the solution submerges the supersonic generator panel, according to the liquid position information obtained by the liquid position sensor, a vibrator in the supersonic generator panel under the liquid position is started to work, then the carbon dioxide in the liquid phase is promoted to evaporate from the liquid phase through a supersonic cavitation effect, then the carbon dioxide rises to the top part of the regeneration tower and forms a pressure; and according to the pressure value measured by the pressure sensor and the temperature value measured by the temperature sensor, the supersonic controller adjusts the output frequency and power of the vibrator in the supersonic generator panel. The system can accelerate the evaporation speed of the carbon dioxide in the solution, reduces the desorption temperature, reduces the external steam consumption, improves the absorption rate of carbon dioxide and the regeneration degree of the solution, and reduces the energy consumption of each unit of carbon dioxide.

The invention relates to a preparation method of a modified carbon dioxide calcium-based absorbent. The method comprises the steps of dissolving calcium nitrate, magnesium nitrate and citric acid in deionized water at the temperature of 20-50 DEG C to form a mixed solution, adding ethylene glycol into the mixed solution, carrying out evaporating dehydration in water bath at the temperature of 80-85 DEG C to form gel, drying the gel in a drying oven at the temperature of 120-130 DEG C, grinding the dried gel to obtain solid powder, calcining the solid powder at the temperature of 800-900 DEG C for 2-5 hours and obtaining the modified carbon dioxide calcium-based absorbent. The carbon dioxide calcium-based absorbent prepared through two modifications (the magnesium nitrate is the primary modifier and the ethylene glycol is the secondary modifier) has the advantages of high carbon dioxide cyclic absorption efficiency, strong sintering resistance and good pore structure distribution at the same time, so that the carbon dioxide calcium-based absorbent still has high carbon dioxide collecting efficiency in the multiple cyclic calcination / carbonation reaction processes and the defects of the existing carbon dioxide calcium-based absorbents, that the superficial area is decreased and the porosity is reduced after multiple cyclic calcinations, are overcome.

The invention provides an apparatus and a method for producing acetic acid by reducing carbon dioxide through a microbial-electrochemical system. The apparatus includes an anode chamber and a cathode chamber, wherein the anode chamber and the cathode chamber separated by a separator. An anode is arranged inside the anode chamber and a cathode is arranged inside the cathode chamber. The anode and the cathode are connected in series outside the anode chamber and the cathode chamber through a power supply to form a loop. The cathode divides the cathode chamber into a cathode liquid chamber and a cathode gas chamber and is a gas diffusion electrode. The invention also discloses a method for producing acetic acid by reducing carbon dioxide through the apparatus. In the invention, the cathode is in the structure of a gas diffusion electrode so that a mass transfer rate and a catalytic rate of carbon dioxide in an electrochemical reaction. An acetic acid generating rate is higher. The apparatus and the method have an important application prospect in fixation and conversion of carbon dioxide.

The invention discloses a large-range carbon dioxide monitoring system based on a wireless sensor network, which comprises a monitoring server. The monitoring server is connected with a plurality of carbon dioxide monitoring devices at different positions in an atmospheric environment in a wireless mode; the carbon dioxide monitoring devices comprise power modules, microprocessors, carbon dioxidemonitoring sensors connected with the microprocessors, and wireless radio frequency transceiver modules; the power modules supply power to the whole carbon dioxide monitoring devices; the carbon dioxide monitoring devices are mutually connected and communicate through the respective wireless radio frequency transceiver module. The invention carries out large-range unified monitoring on the content of carbon dioxide in complex environments and places through the multi-hop mechanism of the wireless sensor network, improves the accuracy of carbon dioxide measurement by utilizing a parsing algorithm, overcomes the problem of high difficulty of real-time accurate large-range carbon dioxide monitoring and is suitable for various large-range complex environments.

The present invention relates to a graphene material inlaid with single metal atoms, the preparation method thereof and its application of being used as the catalyst for the electroreduction of carbon dioxide. The graphene material inlaid with single metal atoms comprises single metal atoms and graphene; the single metal atoms are dispersed in the framework of the graphene; and the graphene is at least one selected from N doped graphene and N and S co-doped graphene. The material is used for the electrochemical reduction reaction of carbon dioxide, which significantly improves the utilization efficiency of the metal atoms and enhances the catalytic activity for the electroreduction of carbon dioxide, improves the catalytic stability, inhibits effectively the hydrogen evolution reaction, improves the selectivity for CO product, and broadens the electric potential window of reducing carbon dioxide to generate CO.

The invention discloses a reactor for microalgae outdoor breeding, including a reactor unit (1) located outdoor, a microalgae harvesting system (4) and an algal liquid circumfluence tube (22), etc., wherein, the reactor unit (1) is in ladder-like structure, is connected by a pluratliy of step-by-step reduced water-drop force eliminating unit (11) whose upstream side is convex with overflow weir (12) from upstream to downstream; when the algae body flowing from the upstream to the downstream meets the required concentration, the microalgae is harvested by the microalgae harvesting system (4), when it does not meet the required concentration, the algal liquid is transferred and returned to the upstream of the reactor unit (1) through the algal liquid circumfluence tube (22). The inventive reactor uses ladder-type flow to generate onflow, so that the distribution of the algae body in the algal liquid is more uniform, the invention has more higher carbon dioxide utilization, low-cost, easy maintenance and repair, the specific algal species and methods can not easily be polluted by imported microalgae, and is suitable for large-scale, low-cost, continuous or semi-continuous breeding of microalgae.

The invention relates to a catalyst for synthesizing methanol by carbon dioxide hydrogenation and a preparation and application thereof. The catalyst for synthesizing methanol by carbon dioxide hydrogenation is prepared from Cu (copper), Zn (zinc), Al (aluminum) and Zr (zirconium). The preparation method comprises the following steps of enabling CuZnAlZr salt and a precipitator to perform flow combining and co-precipitation, or enabling AlZr and CuZn to perform co-precipitation by steps, or enabling AlZr and CuZn to perform co-precipitation and pulping respectively; using the additional metal salt solution to strictly control the pH (potential of hydrogen) value in the aging process after precipitation. The catalyst has the advantages that the conversion rate of carbon dioxide and the yield of methanol are effectively increased, and the stability is good; under the same operation condition, compared with the typical CuZnAl catalyst for synthesizing the methanol, the space time yield of the methanol is increased by 8% to 10%.

The invention discloses a runway pool microalgae culture system using micro-bubble continuous gas flotation to harvest algal cells; the system includes a runway pool, the runway pool is internally provided with a turbulent flow carbon supplementing device, a device using micro-bubble continuous gas flotation to collect the runway pool algal cells, a flow blocking device, a double-paddle-wheel device and a groove structure which is arranged at the lower side. The system has the following advantages: (1) the circulation of a water body in the runway pool can be accelerated, and the gas exchange frequency between a liquid surface and the atmosphere is improved; (2) preliminary concentration on the algal cells can be achieved effectively in real time, the centrifugal efficiency is improved, the centrifugal energy consumption is reduced and the harvesting cost is decreased; (3) distributed carbon dioxide can be prevented from escaping, the utilization rate of carbon dioxide is improved, and the pH of an algal liquid is more rapidly adjusted; (4) exchange between an upper layer and a lower layer of the algae liquid can be effectively promoted, not only can the algae cells on the surface layer be prevented from being damaged by light, but also the total effective light energy quantity received by the algae cells of the unit water body is increased; and (5) the runway pool can realize continuous cultivation of microalgae, and an extremely small amount of waste water generated in the cultivation process can be recycled after the waste water is introduced to a disinfection pool and a nutrient salt blending pool through a pipeline and is treated.

The invention aims at providing a carbon dioxide adsorbent and an application thereof, and belongs to the field of carbon dioxide processing during atmospheric pollution control. The carbon dioxide adsorbent is prepared by adopting a method comprising the following steps of: carrying out polymerization reaction on aniline and a Y-shaped molecular sieve to obtain solid granules; and carrying out carbonation reaction on the solid granules to obtaThe carbon dioxide adsorbent provided by the invention has very high carbon dioxide adsorption capacity, can be used for removing the light-concentration carbon dioxide and is obviously superior to the active carbon in removing effect, easy to operate, superior to the active carbon in regeneration property and low in cost, thereby being used for removing the light-concentration carbon dioxide contained in a gas and achieving good economic benefit and environmental benefit.

The invention provides a preparing method for amido-modified nanometer fiber material for carbon dioxide adsorption. The preparing method is characterized by including the special steps that 1, at the room temperature, a non-water-soluble high-molecular polymer for spinning is stirred and dissolved into a solvent in a stirring kettle, and electrospining raw materials with a mass percentage of 5-30% are obtained; 2, the electrospining raw materials obtained in the step 1 are added into an electrostatic spinning device, electrostatic spinning is carried out, and a nanometer fiber template material is obtained; 3, the nanometer fiber template material obtained in the step 2 is immersed into a prepared organic amine solution with a concentration of 1 mg / mL-1 g / mL, the mixture is stirred in a rotating evaporimeter, the nanometer fiber template material and the organic amine are mixed accordingly, and then stirring is carried out for 5 h to 10 h to remove methyl alcohol or ethyl alcohol, and the amido-modified nanometer fiber material with the carbon dioxide adsorption function is prepared. The amido-modified nanometer fiber material has the high carbon dioxide adsorption capacity and powdering resistance, the preparing method is simple, and the preparing method has the enormous application potentiality in the field of carbon capture.

The invention discloses a multifunctional integrated freshness protection package and a preparation method thereof and belongs to the field of packaging materials. Ethylene absorption, ethylene suppression, antibacterial, high carbon dioxide selective permeation and high steam permeation function film is used as raw material film, and two to five kinds of the function film are selected to be prepared into the multifunctional integrated freshness protection package. The multifunctional integrated freshness protection package is suitable for fresh keeping of fruits and vegetables which are high in breathing intensity and particularly suitable for fresh keeping of breathing jumping fruits in the normal temperature.

The invention discloses an ERI configuration phosphorous-aluminum molecular sieve membrane having a high CO2 separation performance. The ERI configuration phosphorous-aluminum molecular sieve membrane comprises a porous support body and is characterized in that a membrane formed from a SAPO-17 or AlPO-17 zeolite molecular sieve crystal covers the surface of the porous support body. According to the preparation method, a nanometer T type molecular sieve is adopted as a crystalline state silicon source to induce the synthesis of the high-crystallinity submicron SAPO-17 molecular sieve crystal, and the compact ERI configuration AlPO-17 or SAPO-17 molecular sieve membrane is synthesized on the surface of the porous support body by adopting the crystal as the crystal seed through a secondary hydrothermal method, wherein the molecular sieve membrane has advantages of uniform crystal size, compact growth, uniform thickness, high crystallinity, complete coverage, and high carbon dioxide separation performance, and is suitable for the separation of the carbon dioxide gas from natural gas and flue gas.

The invention provides a corrosion inhibitor for inhibiting the corrosion of high-temperature high-pressure carbon dioxide and a preparation method thereof. The corrosion inhibitor comprises 1 to 80 weight percent of thioimidazolone derivative, 1 to 50 weight percent of quaternary alkylammonium salt, 0.01 to 20 weight percent of sulfur-containing low molecular weight organic matter, 0 to 70 weight percent of water, 0 to 30 weight percent of nonionic surfactant, 0 to 70 weight percent of solvent, and 1 to 20 weight percent of alkynol. The corrosion inhibitor has good effect of resisting the corrosion of the high-temperature high-pressure carbon dioxide, can form a layer of effective protective film on the surface of metal, prevent hypersalinity wastewater from corroding the metal at high temperature and high partial pressure of carbon dioxide, and can be used in oil wells with high temperature and high partial pressure of carbon dioxide.

Algae and cyanobacteria are genetically engineered to have lower RUBISCO (ribulose-1,5-bisphosphate carboxylase / oxygenase) content in order to grow more efficiently at elevated carbon dioxide levels while recycling industrial CO2 emissions back to products, and so as not to be able to grow outside of cultivation.

A process for producing LNG from high CO2 natural gas. The process includes: separating methane from a hydrocarbon stream containing CO2 to produce a methane-depleted hydrocarbon stream; subjecting the methane-depleted hydrocarbon stream to at least one separation process; and feeding at least one recycle stream from the at least one separation processes into the step for separating methane. The at least one separation process is selected from the group consisting of deethanizing, depropanizing, debutanizing and CO2 separating.