27 results about "CARBON DIOXIDE/NITROGEN" patented technology

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.

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 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 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.

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

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.

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.

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 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 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 discloses a can sealing purging control method and system based on a production line station and the residual oxygen amount and application, and belongs to the field of food packaging mechanical automation control. The method comprises the steps that historical data on the production line station under the purging conditions of the set can body type, the set material type, the set purging gas and the set purging time are collected; constructing a training sample set based on the historical data on the production line station, and constructing a production line station tank purging prediction model based on the training sample set; the input of the production line station tank purging prediction model comprises tank sealing purging task information and a purging curve, and the output of the production line station tank purging prediction model comprises a residual oxygen amount curve and a final residual oxygen amount; precise control over the amount of the purge gas for the tank body is achieved, waste of the purge gas is reduced while the purge effect is effectively guaranteed, the method is particularly suitable for intelligent replacement purge of inert gas such as carbon dioxide and nitrogen, energy is saved, and consumption is reduced.

The application provides a method for preparing an NH2-UiO-66 membrane on a PES carrier and application. The preparation method comprises the following steps: firstly, pre-modifying the PES carrier; then, placing the PES carrier in a reaction precursor solution to perform multiple solvothermal reactions; after the reaction is completed, washing and drying the prepared membrane to obtain a dense NH2-UiO-66 / PES composite membrane, wherein the reaction precursor solution comprises a metal source, an adjusting agent, a metal source and an organic ligand. The prepared NH2-UiO-66 / PES composite membrane has high connectivity, small intercrystalline defect density, controllable membrane layer thickness and can efficiently separate industrial flue gas such as a carbon dioxide / nitrogen gas mixture. The preparation of the membrane material adopts a solvothermal room-temperature synthesis process, which is simple, and the use of PES instead of porous aluminum oxide (alpha-Al2O3) is conducive to reducing the preparation cost of the membrane, while ensuring high separation performance, and also ensuring that the membrane has an ultra-large flux, so that the NH2-UiO-66 membrane can be scaled up and applied in industrialization.

The present invention provides a 13X molecular sieve and a synthesis method thereof, and relates to the technical field of molecular sieve catalyst preparation, the synthesis method 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 13X molecular sieve is obtained. The synthesized 13X molecular sieve has good CO2 adsorption performance, and the CO2 adsorption capacity can reach 6.23 mmol / g. The selectivity ratio of carbon dioxide to nitrogen reaches 57, and the obvious selectivity on 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 embodiment of the invention discloses a preparation system and method of high-temperature co-electrolysis synthesis gas. The system comprises a plurality of galvanic pile-hot box modules which are integrated in a skid-mounted assembly and have the same structure, a gas supply system, a quantitative evaporation device, an air supply system and a tail gas treatment system. The gas supply system independently supplies carbon dioxide, nitrogen and hydrogen to each module through a high-pressure gas tank and a gas inlet main pipe; the quantitative evaporation device provides water vapor for each module through an electronic water pump, a high-pressure common rail and an evaporator; the air supply system supplies air to the electric pile cabin and the hot box airflow gap through an air main pipe and an oxygen-enriched air main pipe respectively; the tail gas treatment system treats produced gas through a condenser, a low-pressure tank, a carbon removal device and a compression loop, and cyclic utilization of unreacted gas is achieved. Through the isomorphic modular design and the public main pipeline system, the system can be flexibly expanded from the hundred-kilowatt level to the megawatt level, and the high efficiency and stability of the synthesis gas preparation process are ensured.

The utility model discloses a kind of kiln waste heat refrigeration and flue gas emission reduction integrated equipment, including refrigeration device, purification device and back to furnace pipe, refrigeration device includes flue gas heat exchanger, lithium bromide water chiller and cold taking device, several flue gas passages and several hot water passages are equipped in the inside of flue gas heat exchanger, several flue gas passages are respectively adjacent with several hot water passages Setting, one end of several flue gas passages is communicated with kiln, another end is communicated with exhaust pipe, the heating side of lithium bromide water chiller is communicated with several hot water passages, the cold water side of lithium bromide water chiller is communicated with cold taking device;The purification device includes dust collector and carbon dioxide recovery device, the two sides of dust collector are respectively communicated with exhaust pipe and carbon dioxide recovery device, back to furnace pipe is communicated with exhaust pipe and kiln.The kiln waste heat refrigeration and flue gas emission reduction integrated equipment can recover the waste heat in flue gas discharged by kiln for refrigeration, and can reduce dust, carbon dioxide, nitrogen oxides emission.

The application provides a surface porous composite graphite negative electrode material and a preparation method and application thereof, and belongs to the technical field of lithium ion battery negative electrode materials. The surface porous composite graphite negative electrode material comprises porous etched graphite and a carbon layer covering the surface of the porous etched graphite, and the carbon layer is formed by twice carbonization of refined pitch. The preparation method comprises the following steps: performing oxidation treatment on graphite powder, and then performing tannic acid anchoring and ferric chloride hexahydrate complexing in sequence to obtain a modified precursor; performing heat treatment and carbon dioxide / nitrogen etching to obtain surface layer etched graphite; performing acid pickling to obtain porous etched graphite; mixing the porous etched graphite with refined pitch and performing twice carbonization to obtain the negative electrode material. Through step-by-step limited anchoring, the catalytic center tends to be distributed on the surface layer, and in combination with controlled etching, pre-acid pickling and surface opening remodeling, the application helps to give consideration to surface layer transmission structure adjustment and surface state control, and helps to reduce the content of residual magnetic metal impurities, and is suitable for lithium ion battery negative electrodes.

The invention belongs to the technical field of oil production devices, and particularly relates to a steam, carbon dioxide and nitrogen combined injection energy-saving yield-increasing oil production device which comprises a gas injection well pipe, the upper end of the gas injection well pipe is fixedly communicated with a steam inlet pipe, a carbon dioxide inlet pipe and a nitrogen inlet pipe, and a gas mixer is installed at the upper end of the gas injection well pipe. The gas injection well pipe is provided with a plurality of groups of flange connecting assemblies, and the device further comprises three groups of introduction quantity regulation and control feedback mechanisms, a steam pretreatment mechanism, a plurality of groups of compensation pressurization fixing mechanisms and a compensation pressurization starting mechanism. Steam, carbon dioxide and nitrogen are forcibly mixed under the turbulent flow effect of the gas mixer, the problem that the displacement effect is uneven due to large gas physical property difference can be avoided, whether pretreatment is conducted or not can be automatically judged according to the steam introduction amount, trickles are dispersed, condensate water generation and pipeline corrosion are reduced, and the energy consumption is reduced. Meanwhile, the locking force of the flange connecting assembly is automatically supplemented according to temperature and air pressure changes, leakage is prevented, and damage is avoided.

The utility model discloses an automatic purification type moxibustion instrument, and relates to the technical field of moxibustion instruments. The multifunctional moxibustion machine comprises a machine box body, a lifting box body is installed in a cavity in one side of the machine box body in a sliding mode, a folding box body is horizontally installed at the top of the lifting box body, a control panel is installed at the top of the machine box body, and a moxibustion box is installed at the top of the folding box body. A smoke purification assembly is arranged between the case main body and the lifting box body, and a locking assembly is arranged between the lifting box body and the folding box body. The control panel controls the combustion bin in the case body to conduct preheating, moxa cone ignition and combustion, gas and particulate matter which are not completely combusted exist, the gas and the particulate matter are sucked into the combustion bin through the centrifugal fan in the lifting box body to be subjected to secondary sufficient combustion, and the combusted gas passes through the filter box to be subjected to secondary sufficient combustion. Harmful gases in the moxa smoke are catalyzed into odorless and non-toxic gases such as carbon dioxide, nitrogen and oxygen to be discharged, so that automatic purification and clean discharge of the moxa smoke are realized.

The invention relates to a zeolite molecular sieve adsorbent and a preparation method and application thereof, and belongs to the technical field of molecular sieves. The preparation method of the zeolite molecular sieve adsorbent comprises the following steps: (1) preparing a solution A containing a silicon source, an acid source and rare earth metal salt, and preparing a solution B containing an aluminum source and an alkali source; (2) mixing the solution A and the solution B obtained in the step (1), and performing ultrasonic aging to obtain aged slurry; and (3) carrying out microwave crystallization, washing and drying on the aged slurry obtained in the step (2) to obtain the zeolite molecular sieve adsorbent. According to the preparation method, rare earth elements are adopted for doping, the rare earth element-doped zeolite molecular sieve is obtained, the pore diameter of the zeolite molecular sieve can be accurately regulated and controlled through introduction of the rare earth elements, and therefore accurate and efficient screening of difficult-to-group components such as carbon dioxide / acetylene, carbon dioxide / nitrogen, carbon dioxide / methane and methane / nitrogen is achieved.

This invention provides a method for the adsorption and replacement of methane in shale using a carbon dioxide / nitrogen mixed gas. The method includes: injecting a first preset amount of methane into a reference cell to obtain first pressure change data; injecting a second preset amount of carbon dioxide / nitrogen mixed gas into the reference cell in stages to obtain second pressure change data; and determining the adsorption amounts of carbon dioxide, nitrogen, and methane by the shale at each pressure point, as well as the desorption amounts of methane in the shale at each pressure point, based on the first and second pressure change data, the volume of the reference cell, and the residual volume of the sample cell. This method fully considers the potential impact of bidirectional gas diffusion on the competitive adsorption of the mixed gas during the adsorption and replacement of methane in shale, providing a solid foundation for improving the recovery efficiency of the adsorbed gas and thus effectively improving shale gas recovery.