47 results about "CARBON DIOXIDE/NITROGEN" patented technology

The invention discloses a renewable energy-driven nitrogen-carbon-hydrogen coupling fixation nitrogen fertilizer preparation device and method. On-site conversion of renewable energy and zero-carbon synthesis of nitrogen fertilizers (ammonia, ammonium nitrate, ammonium bicarbonate, urea and the like) can be realized under the condition that additional energy and material input are not needed. Energy management and system energy supply are achieved by means of renewable energy source driving and a flexible control technology, and materials such as carbon dioxide, nitrogen and water are continuously obtained from the environment based on a direct air trapping technology; the green nitrogen fertilizer is synthesized by direct selective catalytic conversion of inert nitrogen, oxygen, hydrogen and other materials by using a low-temperature plasma-electro-catalysis composite conversion system and equipment. According to the invention, stable and efficient synthesis of air into the nitrogen fertilizer with high added value is realized under the driving of renewable energy sources, so that instant green fertilizer and chemical supply is provided for remote areas such as high mountains, deserts and islands and areas lacking industrial foundations, and the method has a good application prospect.

The invention relates to the technical field of greenhouse gas emission reduction, and discloses a gas injection method for improving coal seam carbon dioxide sequestration efficiency, which comprises the following steps: S1, reservoir evaluation and well pattern deployment; s2, multi-slug alternate injection is carried out; s3, intermittent injection-production operation is carried out; s4, long-term storage monitoring; and S5, stability maintenance measures are taken. According to the method, through an innovative'carbon dioxide-nitrogen-carbon dioxide 'multi-slug alternate injection process and an optimized well pattern deployment strategy, the problems of gas fingering and fluid channeling caused by strong heterogeneity of the coal seam are effectively solved, and particularly, by means of the low viscosity and weak adsorption characteristics of the nitrogen buffer slug, the coal seam gas density is improved, and the coal seam gas density is improved. The carbon dioxide preferentially enters a high-permeability channel and forms a mobility control barrier, so that the subsequently injected carbon dioxide is forced to turn to a medium-low-permeability area, and the swept volume and the contact area of the carbon dioxide in the coal seam are obviously enlarged.

The present disclosure provides system and method for synthesis of green ammonia and other nitrogenous fertilizers derived from it including urea and nitric acid (as well as others that may be produced by any combination / reaction of these) by coupling renewable energy and Carnot battery with Solid-Oxide Electrolyser Cell (SOEC) and Direct Air Capture (DAC). 5 The system provides a solution for round-the-clock renewable energy using Carnot battery that provides both heat and power to run SOEC. The heat from Carnot battery is used by DAC to capture carbon dioxide from air. A nitrogen-oxygen generator may produce nitrogen using continuous power from Carnot battery. Ammonia may be produced by using hydrogen from SOEC, and nitrogen from the nitrogen-oxygen generator. Urea may be produced using 0 carbon dioxide from DAC and ammonia. Ammonia and oxygen from SOECs and nitrogen- oxygen generator may be used for synthesis of nitric acid, and other nitrogenous fertilizers. The process heat from ammonia and nitric acid synthesis is recycled back to the Carnot battery.

Use of a gas hydrate for producing a frozen food foam product, wherein the gas comprises air and / or one or more of carbon dioxide, nitrogen, nitrous oxide, argon and oxygen, preferably the gas comprises carbon dioxide and / or nitrogen.

Pyrolytic emissions often include molecularly decomposed hydrocarbons, as well as byproducts from pyrolytic processes. Unfortunately, legacy processing treats effluent streams, including pyrolytic emissions, as waste that is released into the air-even though such pyrolytic emissions streams often include greenhouse gases and pollutants such as carbon dioxide, nitrogen oxides, sulfur dioxide, volatile organic compounds, and particulate matter-the discharge of which contributes to global greenhouse gas emissions. Disclosed herein are pyrolytic emissions looping systems that include several reactors where each of the several reactors converts different hydrocarbons into different useful end-products, thus providing a way to continuously recycle the effluent gas stream from pyrolytic processes.

The invention provides polyarylether resin, a preparation method thereof and a gas separation membrane, and relates to the technical field of polymer synthesis. According to the polyarylether resin, starting from the molecular design of a membrane material, an amino group having acid-base interaction and hydrogen bond interaction with carbon dioxide molecules and a non-planar aromatic macromolecular fluorenyl group capable of promoting the reduction of the stacking density of the molecular chain are introduced into the molecular chain; the polyarylether resin containing amino and fluorenyl structures and having a specific structure is obtained, and the polyarylether resin has excellent heat resistance, solubility and good gas separation performance for carbon dioxide and nitrogen, and can be used as a gas separation membrane material. The invention also provides a preparation method of the polyarylether resin and a gas separation membrane prepared from the polyarylether resin. The gas separation membrane has high carbon dioxide permeability coefficient and carbon dioxide / nitrogen selectivity.

The application provides a deodorization catalyst and a preparation method and application thereof, and belongs to the technical field of deodorization catalysts. The application uses pseudo-boehmite as a catalyst active carrier, and uses diiron trioxide, titanium oxide and silicon oxide as effective active components of the catalyst. Through synergistic action, the catalyst accelerates the full combustion of foul-smelling gas in the production of animal carcass treatment and feather protein powder in a incinerator under the condition of ≤700 DEG C, and converts the foul-smelling gas into harmless products such as carbon dioxide, nitrogen, sulfur, water vapor, etc., and a small amount of over-oxidized products such as sulfur dioxide and nitrogen oxides, etc. have good alkaline conditions and water solubility, and are removed by spraying an alkaline aqueous solution, so as to reach the environmental protection standard discharge, and finally realize the efficient and low-cost elimination of the foul-smelling gas generated in the production of animal carcass treatment and feather protein powder.

The utility model discloses a biomass combustion boiler, which relates to the technical field of agricultural machinery and comprises a boiler body, and a bag breaking chamber and a hearth are arranged in the boiler body. A plurality of horizontally-arranged branch pipes are arranged in the bag breaking chamber and arranged around straw bags, the ends of the branch pipes are fixed to a main pipe, the main pipe penetrates through the bag breaking chamber and extends outwards, the extending end of the main pipe is provided with a connector, the connector is connected with a hearth or a heat exchanger, and the heat exchanger is connected with the hearth. By means of the arrangement, the main pipe discharges smoke generated by materials in the hearth to the surfaces of straw bags through the branch pipes; smoke contains gas components such as carbon dioxide and nitrogen which do not support combustion, and when the smoke surrounds the straw bags, air (oxygen) can be isolated to a certain degree, so that combustion of the straw bags is inhibited, and the flame-retardant effect is achieved.

The invention provides polyarylether resin as well as a preparation method and application thereof, and relates to the technical field of polymer synthesis. According to the polyarylether resin, starting from the molecular design of a film material, amino groups having acid-base interaction and hydrogen bond interaction with carbon dioxide molecules are introduced into a molecular chain, so that the polyarylether resin with a polar amino structure is obtained, and the polyarylether resin has excellent heat resistance and solubility, and can be used for preparing a membrane material. And good gas separation performance for carbon dioxide and nitrogen. The invention also provides a preparation method of the polyarylether resin and application of the polyarylether resin as a membrane material in gas separation, the polyarylether resin can be used as the membrane material for preparing a gas separation membrane, and the prepared gas separation membrane has high carbon dioxide permeability coefficient and carbon dioxide / nitrogen selectivity.

The present application relates to a method for synthesizing high-value products by using refinery furnace gas, which is purified and then sent to a chemical chain three-stage atmospheric reactor, near-pure carbon dioxide, nitrogen and hydrogen products are obtained in each stage, the near-pure hydrogen product after reforming of coke oven gas is used as a supplement hydrogen source to adjust the gas structure, after being pressurized, the mixed raw material is sent to a synthesizer, and then methanol or ammonia products are obtained after gas-liquid separation. The present application solves the problem that carbon dioxide and nitrogen cannot be utilized when traditional refinery furnace gas replaces coal-based carbon monoxide to synthesize high-value products by chemical carbonylation; absorbs part of the coke oven gas at the tail end of the coke oven process, and makes up for the defect that the raw material structure needs cheap hydrogen source supplement in the process; and optimizes the tail gas and low-grade heat recycling process in each production process, realizes near-zero emission in the life cycle and chemical energy cascade utilization.

System and apparatus for robust, portable gas detection. Specifically, this disclosure describes apparatuses and systems for optical gas detection in a compact package using two optical pathways. There is a need for a very compact, low-power, gas detection system for gases such as CO2, NOx, water vapor, methane, etc. This disclosure provides an ultra-compact and highly stable and efficient optical measurement system based on principals of optical absorption spectroscopy using substantially collinear pathways.

To provide a power generation device using pseudo-oil that has no depletion risk, does not generate CO2, nitrogen oxide, particulate matters (PMs) etc. when used and requires lower cost compared to emulsion fuel purification.SOLUTION: A power generation device has a function for circulating for a fixed time three processes comprising: converting a mixed solution of water and oil into a nanosized state by using a nano-bubble generation device; emulsifying the mixed solution by using an ultrasonic vibration stirring device; and causing the solution to pass through an electromagnetic field (magnetic field) of an electromagnet (and neodymium) so that quantum reaction is promoted by emulsification and plasma ionization of the nano-sized solution, and a function for purifying pseudo-oil fuel by using a phenomenon in which occurrence of element transmutation of the water content and oil in the mixed solution in these processes causes the water and oil to begin to have the same property.SELECTED DRAWING: Figure 1

The present invention discloses a steam, carbon dioxide, and nitrogen co-injection energy-saving and production-increasing oil production device, which relates to the technical field of production-increasing oil production devices. The device comprises a combination valve body, a connecting pipe, a connecting head, a first gas injection well pipe, and a second gas injection well pipe. The connecting pipe and the connecting head are in three groups, and the combination valve body is respectively connected to the connecting head of the first gas injection well pipe through the connecting pipe. The present invention can isolate the heat of steam, carbon dioxide, and nitrogen. The heat transfer between high-temperature steam and carbon dioxide and nitrogen can compensate for the pressure loss of heat carbon dioxide and nitrogen, thereby improving the oil production or oil production efficiency, preventing the airflow injected into the oil field from flowing back into the second gas injection well pipe, and also preventing some oil from flowing back into the interior of the second gas injection well pipe. The airflow entering the oil field is fanned and dispersed, and especially when multiple airflows are injected, the various airflows can be mixed to make them uniform, so that the airflow is fully integrated into the oil.

A method for synthesizing high-value products from refinery furnace gas is provided. Crude furnace gas from a refinery is purified, and then clean furnace gas is delivered to a three-stage normal pressure reactor in a chemical looping, where nearly pure carbon dioxide, nitrogen, and hydrogen products are obtained in each stage of the process. Nearly pure hydrogen reformed from coke oven gas is used for hydrogen replenishment to adjust a gas structure. Mixed raw materials that meet standards are pressurized and delivered to a synthesizer, and methanol or ammonia products are obtained after gas-liquid separation.

The present invention discloses a process for preparing belite-sulfoaluminate cement by using industrial waste as an auxiliary raw material. 80-100 parts of limestone are used as the main raw material, and 20-30 parts of fly ash, 10-15 parts of industrial gypsum, 10-15 parts of aluminum-containing sludge, and 5-10 parts of steel slag are used as auxiliary raw materials. It is prepared through two-stage reactions of hydrothermal reaction and calcination sintering. Through the improvement of the composition, content of raw materials and the process, on the premise of ensuring the mechanical properties of the cement, the emission of waste gas can be effectively treated, and the energy consumption in the production process is reduced; on the other hand, a biomass powder preparation system is coupled to co-pyrolyze biomass powder with cement raw materials, further reducing the generation of waste gas such as carbon dioxide and nitrogen oxides and the treatment cost; it has good application prospects.

To provide an in-duct fire extinguishing device that can simplify fire extinguishing facilities and reduce costs. [Solution] The duct fire extinguishing device 1 of the present invention is a device installed inside a duct 101, and includes a tank 10 filled with an inert gas (carbon dioxide gas, nitrogen gas, etc.) and a fire extinguishing liquid (potassium carbonate liquid, purified water, etc.), a nozzle 20 equipped with an outlet 51 for spraying the inert gas and fire extinguishing liquid filled in the tank 10 into the duct 101, and a heat-sensitive valve 30 that closes the outlet 51 of the nozzle 20 when the temperature inside the duct 101 is below a set value and opens the outlet 51 of the nozzle 20 when the temperature inside the duct 101 exceeds the set value.

This application relates to a carbon fixation planting and filtration system. The system includes a planting chamber with a receiving trough. From the bottom to the opening of the receiving trough, an air inlet pipe, a plant fiber and carbon-based carbon fixation layer, and a planting layer are sequentially arranged. The air inlet pipe is connected to the plant fiber and carbon-based carbon fixation layer, allowing air entering through the air inlet pipe to reach the plant fiber and carbon-based carbon fixation layer. The planting layer is used for planting plants. Through this carbon fixation planting and filtration system, the air inlet pipe ensures smooth airflow into the plant fiber and carbon-based carbon fixation layer. In the plant fiber and carbon-based carbon fixation layer, trace elements such as carbon dioxide, nitrogen, argon, phosphorus, and potassium, as well as harmful substances in the air, are condensed and solidified. Planting through the planting layer integrates planting, carbon dioxide fixation, and air filtration, achieving multiple objectives: environmental purification, mitigating global warming, and promoting plant growth.

The invention discloses a method for preparing urea through electrochemical catalysis of carbon dioxide and nitrogen, and belongs to the technical field of value-added chemicals constructed through an electrochemical method.The method comprises the steps that S1, a copper dimer is synthesized; s2, synthesizing graphite phase carbon nitride; s3, synthesizing copper diatoms loaded on the surface of the graphite phase carbon nitride; s4, taking silver / silver chloride as a reference electrode, taking a platinum net as a counter electrode, taking the copper diatomic catalyst as a working electrode, and carrying out electrochemical reaction in an H-type electrolytic tank to obtain a urea product; rich and cheap carbon dioxide and nitrogen in nature are used as reaction raw materials, water is used as a proton source, and green, clean and mild synthesis of urea under room-temperature room pressure is realized. More importantly, the catalyst shows good activity, selectivity and stability in a urea electrochemical synthesis reaction; the catalyst can become a low-cost and high-efficiency catalyst applied to urea electrosynthesis.

The invention aims to introduce an imidazole amino acid ionic liquid into a poly (ethylene oxide) membrane. A series of amino acid ionic liquid / poly (ethylene oxide) composite membranes are prepared by adopting a low-temperature plasma polymerization process and are used for overcoming the defect that the carbon dioxide / nitrogen selectivity of the poly (ethylene oxide) membrane is quickly reduced along with the rise of temperature. The preparation method specifically comprises the following steps: preparing amino acid ionic liquid by adopting a conventional method, preparing a separation layer solution through solution blending for soaking a base membrane, and finally putting the composite membrane into a low-temperature plasma reaction kettle for induced polymerization. The composite membrane is excellent in carbon dioxide / nitrogen permeation separation performance and has industrial application potential.

The patent application relates to a paper-based packaging material with a carrier paper and a first coating arranged indirectly on at least one side of the carrier paper, wherein the first coating is a barrier layer and has an increased diffusion resistance to at least one substance selected from a group comprising fluid, gas, air, oxygen, carbon dioxide, nitrogen, inert gas, odorant, aromatic substance, water vapor, liquid, water, water-fat emulsion, fat, oil, mineral oil, and edible oil, odorant, flavorant, water vapor, liquid, water, water-fat emulsion, grease, oil, mineral oil, and edible oil individually or in combination, wherein the first coating is disposed between the carrier paper and a visually perceptible surface coating and directly contacts the surface coating. Furthermore, the invention relates to a package made of such a paper-based packaging material and a method of manufacturing the same.

A kind of hydrogen bond organic framework material for flue gas desulfurization and its preparation method and application, it relates to flue gas desulfurization technical field, it is to place the activated crystal powder in carbon dioxide atmosphere under the condition of minus 87 ℃ to minus 20 ℃, 6-12 hours are stationary. 1-2 hours are extracted by vacuum pump, carbon dioxide molecule is removed, and the hydrogen bond organic framework material is obtained. Technical effect is, the obtained hydrogen bond organic framework material shows specific adsorption to sulfur dioxide, and hardly adsorbs other components such as carbon dioxide, nitrogen, methane and the like in flue gas. The material itself has good hydrophobicity, the adsorption amount of water is extremely low, greatly reduces the influence of water vapor in real flue gas environment on the adsorption capacity of material, and shows high water stability and acid-base stability, which is beneficial to the application in real flue gas environment. And the material has high cycle stability.

A system and method for generating electricity and heat from the combustion of tail gas containing biogenic methane using a gas turbine are provided. A gas turbine can generate electricity and heat from process tail gases (comprising biomethane, but also comprising fixed gases such as carbon dioxide, nitrogen, oxygen, hydrogen, carbon monoxide, as well as trace gases) as a secondary fuel while using natural gas as the primary fuel in the gas turbine. The tail gases from biogenic methane purification processes can have heating values as low as 42 BTU / SCF. The gas turbine will reduce net energy consumption, reduce greenhouse gas emissions, and reduce operating costs for biogenic methane purification processes. The gas turbine can also destroy tail gases that would otherwise cause excessive air emissions without the use of pollution control equipment (such as a thermal oxidizer or flare).

The invention provides a process optimization method for improving the recovery efficiency through gas-assisted viscosity reduction and energy increase. The process optimization method for improving the recovery efficiency through gas-assisted viscosity reduction and energy increase comprises the steps that 1, heavy oil reservoirs are screened; 2, according to the selected heavy oil well, a heavy oil thermal recovery mode and a heavy oil cold recovery mode are selected, and the injection sequence of a viscosity reducer, carbon dioxide, nitrogen and steam is selected; step 3, optimizing the consumption of carbon dioxide and nitrogen; 4, calculating the gas floating time by adopting a gas-assisted viscosity-reducing and energy-increasing device; step 5, determining a corresponding soaking time range; and 6, the critical production pressure difference is calculated, and the production period is prolonged through pressure control production. The gas-assisted process optimization method for reducing viscosity, increasing energy and improving the recovery efficiency has the advantages of being economical, simple, convenient, high in operability and the like; and full-flow coverage of gas injection, soaking and production in the gas-assisted viscosity reduction and energy increase process is realized.

The present invention relates to the field of gas separation membrane technology, and in particular to a covalent organic framework-based gas separation membrane and its preparation method and application, comprising the following steps: preparing a mixed solution containing a polyamine monomer, a polyaldehyde monomer, and an organic solvent, reacting to obtain a COF material; preparing an aqueous solution of small amine molecules, adding the COF material, and mixing until adsorption equilibrium is obtained to obtain NH2-COF; preparing an aqueous phase reaction liquid containing NH2-COF and an organic phase reaction liquid containing polyacyl chlorides; contacting the aqueous phase reaction liquid with the surface of a support membrane, removing excess liquid, and then contacting it with the organic phase reaction liquid to react to obtain a nascent COF membrane; and heat-treating the nascent COF membrane at 30-90°C for 1-30 minutes to obtain a COF gas separation membrane. The gas separation membrane prepared by the present invention can achieve efficient separation of carbon dioxide / nitrogen and carbon dioxide / methane, solving the problem of low selectivity of COF membranes in carbon dioxide / nitrogen and carbon dioxide / methane separation in the prior art.

The present invention provides an acid-gas adsorbent suitable for curbing, in a low-humidity environment, a decrease in adsorption performance with respect to an acid gas. This acid-gas adsorbent comprises a polymer P having an amino group, and a liquid L having a boiling point of 130°C or higher. When the acid-gas adsorbent is run through an adsorption test A for 15 hours, the amount of carbon dioxide adsorbed is 0.35 mmol / g or higher. 　Adsorption test A: a mixed gas G1 composed of carbon dioxide, nitrogen, and water vapor is continuously fed into a container in which the acid-gas adsorbent is accommodated. The concentration of carbon dioxide in the mixed gas G1 is 400 volppm, and the mixed gas G1 has a temperature of 20°C and a humidity of 50%RH.

The invention discloses a process for producing an aerosol propellant from R152a, which comprises the following steps: refining an R152a raw material through a molecular sieve adsorption tower and an activated carbon adsorption tower in sequence, then mixing the R152a raw material with carbon dioxide and nitrogen according to a specific ratio at normal temperature and normal pressure, and finally filling a steel cylinder special for aerosol with the mixed material. According to the process, by optimizing the raw material treatment and mixing process, the prepared aerosol propellant has good spraying performance, stability and compatibility, and the process is simple, convenient to operate and suitable for industrial production.

The present invention belongs to the technical field of uranium purification, and specifically relates to a method for treating uranium-containing high-salt waste liquid in a nitric acid system. The waste liquid after filtering out impurities is transported to a waste liquid incinerator via a diaphragm metering pump and evenly sprayed into the combustion chamber of the waste liquid incinerator through a feed nozzle. The flue gas after the combustion of natural gas and air is used as a heat source to completely gasify the waste liquid. At the same time, the organic phase and interface contaminants contained in the waste liquid can be fully burned and oxidized into carbon dioxide, nitrogen oxides, sulfur dioxide and water vapor by excess air; the nitrate in the waste liquid is partially decomposed into metal oxides and nitrogen oxide gases by heat, and the uranium contained is also decomposed into uranium oxides and nitrogen oxide gases. The salts, metal oxides and uranium oxides remaining in the waste liquid are discharged from the lower outlet of the waste liquid incinerator in the form of powder for temporary storage. The present invention combines waste liquid incineration technology with nitric acid distillation technology, which can not only achieve standard discharge of waste liquid but also realize the recycling and utilization of nitric acid resources therein.

The invention belongs to the technical field of materials, and particularly relates to a 13X molecular sieve synthesis method, which comprises: mixing a sodium aluminate solution, a sodium hydroxide solution and a sodium metasilicate nonahydrate solution, uniformly stirring, stirring for a first time at a first temperature, carrying out a hydrothermal reaction for a second time at a second temperature, and finally filtering, drying and calcining to obtain the 13X molecular sieve. The synthesized 13X molecular sieve has good CO2 adsorption performance, and the CO2 adsorption capacity can reach 7.23 mmol / g. The selectivity ratio of carbon dioxide to nitrogen reaches 230, and the obvious selectivity of carbon dioxide is superior to that of nitrogen, so that the catalyst has good selectivity. In an adsorption-regeneration cycle test, a sample shows stable adsorption-regeneration performance, the adsorption capacity is not obviously reduced, and the sample has good stability under static and dynamic adsorption conditions.

The invention relates to a virtual power plant low-carbon flexible operation method considering chemical production. The method comprises the following steps: 1) constructing an objective function of a virtual power plant low-carbon flexible operation model considering chemical production; 2) constructing balance constraints of energy substances of electricity, hydrogen, heat, carbon dioxide, nitrogen, methane, methanol and urea of the virtual power plant low-carbon flexible operation model considering chemical production; 3) constructing constraints of pressure swing adsorption nitrogen generation equipment, methane preparation equipment, methanol preparation equipment, ammonia gas preparation equipment and urea preparation equipment, and constraints of a carbon capture unit, carbon sequestration equipment, an electrolytic bath, a hydrogen fuel cell, a cogeneration unit and a gas-fired boiler of the virtual power plant low-carbon flexible operation model considering chemical production; and 4) solving the virtual power plant low-carbon flexible operation model considering chemical production to obtain an operation decision of the virtual power plant.

The present invention relates to the field of gas separation technology, and specifically to the application of a MOF material NUC-200 in the separation of carbon dioxide / methane and carbon dioxide / nitrogen mixtures. In order to solve the problems of high regeneration energy consumption of existing adsorbents for separating carbon dioxide mixtures and poor structural stability of the adsorbents in humid environments, the present invention provides an application of a MOF material NUC-200 in the separation of carbon dioxide / methane and carbon dioxide / nitrogen mixtures, wherein the preparation method of the MOF material NUC-200 comprises the following steps: 1) adding zinc acetate and 4,5-dicyanoimidazole to methanol and stirring; 2) adding ammonia water and stirring to continue the reaction until a white solid precipitate appears; 3) filtering, washing, and drying the white solid precipitate. The MOF material NUC-200 described in the present invention can achieve efficient separation of carbon dioxide / methane and carbon dioxide / nitrogen mixtures.