610 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 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 present invention discloses method for making defect-free high performance mixed matrix membranes (MMMs) containing a continuous polymer matrix and dispersed molecular sieves such as AlPO-14 or UZM-5. These MMMs can be used for separations. The novel method for making defect-free high performance MMMs comprises: post treating the MMM at a temperature ≧150° C. This new method results in a MMM with either no macrovoids or voids of less than 5 angstroms at the interface of the continuous polymer matrix and the molecular sieves. The MMMs are in the form of symmetric dense film, thin-film composite (TFC), asymmetric flat sheet or asymmetric hollow fiber. These MMMs have good flexibility and high mechanical strength, and exhibit high carbon dioxide/methane (CO₂/CH₄) selectivity and high CO₂ permeance for CO₂/CH₄ separation. The MMMs are suitable for a variety of liquid, gas, and vapor separations.

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.

The present invention relates to a composite separation membrane including a graphene oxide coating layer. The composite separation membrane of the present invention has both high carbon dioxide permeability and high selectivity for carbon dioxide over nitrogen, hydrogen or methane gas, is free of surface defects, and exhibits remarkably increased selectivity for carbon dioxide over other gases (hydrogen, nitrogen, methane, etc.) without any change in carbon dioxide permeability, particularly even when exposed to water. Due to these advantages, the composite separation membrane of the present invention can be applied to industrial fields involving carbon dioxide separation and recovery processes. The present invention also relates to a method for manufacturing the composite separation membrane.

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.

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.

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.

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 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 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.