1037 results about "Gas blending" patented technology

A blower (1) for a fuel cell assembly for recirculating a gas mixture used for operating the fuel cell assembly is equipped with a drive motor (7, 8, 9) comprising a rotor (9) coupled to a motor shaft (7) and a stator (8) arranged radially outside the rotor (9). An annular channel (10) is provided radially between the rotor (9) and the stator (8) for conveying the gas mixture from an inlet side to an outlet side of the annular channel (10). A blower impeller (5) coupled to the motor shaft (7) is provided in the region of the outlet side of the annular channel (10) to convey the gas mixture from the inlet side to the outlet side of the annular channel (10) when rotating. Furthermore, a flow guide device (14) is provided to impart a circumferential swirl to the gas mixture entering the annular channel (10).The annular channel (10) is bounded by an assembly consisting of an outer wall (16; 21) and an inner wall (17), wherein the flow guide device (14) is provided on the inlet side between the outer wall (16; 21) and the inner wall (17).

The present disclosure relates to a carbon-based nanomaterial composition that may be formed from a gas mixture and a sulfur powder. The gas mixture may include a carbon based gas, an oxygen gas, and a hydrogen gas. The carbon-based nanomaterial composition may include sulfur doped nanospheres.

The invention relates to the technical field of industrial monitoring, in particular to a gas mixture detection model construction method and a gas mixture detection method.The gas mixture detection model construction method comprises the steps that spectral data of a plurality of gas mixtures are obtained; constructing a basic detection model based on a CNN model and a KAN model; and training the basic detection model based on the spectral data to obtain a gas detection model. The invention provides a gas mixture detection method based on a CNN network and a KAN network, which is combined with spectral analysis technologies such as infrared spectroscopy (IR) or Fourier transform infrared spectroscopy (FTIR) and the like, and can improve the recognition speed and precision of complex mixed gas. Through the combination of the technologies, rapid and accurate detection and concentration analysis of various gaseous molecular pollutants in air can be realized, a more reliable air quality control means is provided for the industrial manufacturing process, and the yield and quality stability of products can be improved.

A perforated packing for capturing carbon dioxide (CO2) from a dilute gas mixture includes at least one perforated mg) structure and a feed structure. The at least one perforated structure includes a body that includes at least one wall defining an inner volume of the body and an outer surface exposed to the dilute gas mixture; and a plurality of perforations extending through the at least one wall between the inner volume and the outer surface. The feed structure is fluidly coupled to the body and operable to flow a CO2 capture solution into the inner volume of the body, through the plurality of perforations, and along the outer surface to form a liquid film of the CO2 capture solution along at least part of the outer surface, the liquid film of the CO2 capture solution configured to absorb CO2 from the dilute gas mixture.

The invention discloses an organic waste gas purification treatment device, which comprises an adsorption purification structure and an auxiliary adjustment structure, the adsorption purification structure is a tank body, the upper part in the adsorption purification structure is connected with an activated carbon filter layer through a bolt, and steam moving sheets are arranged in steam hoods on the upper and lower ring surfaces of the adsorption purification structure and are connected with a steam main pipe and a steam auxiliary pipe through pressure relief conduits; the auxiliary adjusting structure is arranged on the left side of the adsorption purification structure and communicated with the lower end, a cavity dividing plate, a supporting frame body and other components are arranged in the organic waste gas pipe body, and a hydraulic pipe on the supporting frame body is connected with a high-concentration blocking net plate and connected with a gas supply pipe and a water supply pipe through a series of mechanical transmission; when the device is used, low-concentration organic waste gas can be directly purified; when high-concentration and high-temperature organic waste gas is treated, the waste gas and supplementary gas can be mixed, cooled and concentrated, so that the waste gas and supplementary gas meet activated carbon adsorption conditions, and meanwhile, steam can be utilized to push the steam movable sheet to construct a closed environment, so that organic matters adsorbed by activated carbon are quickly desorbed and output and recovered along with the steam.

The utility model discloses a multi-element gas automatic mixing device which comprises a plurality of gas branches, all the gas branches are jointly connected with a gas main path, the gas main path is connected with a mixing tank, the gas main path is provided with a static mixer, the mixing tank is provided with a dynamic mixer, and the static mixer is connected with the dynamic mixer. A gas outlet of the mixing tank is sequentially provided with a first-stage buffer tank, a second-stage buffer tank, a third-stage buffer tank and a first gas storage chamber in the gas conveying direction, and efficient mixing of gas is achieved through a static mixer and a dynamic mixer. The static mixer utilizes a spiral structure to generate rotation and turbulent flow to promote uniform mixing of gas; under the condition that the gas flow speed is lower or the gas types are more, the dynamic mixer is provided with an electric stirring blade, the mixing uniformity is further improved through mechanical stirring, the gas enters the buffer tank after being mixed through the arrangement of the multi-stage buffer tank, the pressure fluctuation is reduced, and the flow speed is homogenized. And the repeated diffusion and distribution process in the buffer tank improves the mixing uniformity of the gas.

An apparatus and method for determining the presence of a disease by analyzing a specimen by providing a vial partially containing the specimen and partially containing a headspace above the specimen, injecting an inert gas into the specimen in the vial to cause bubbling of the gas throughout at least a portion of the specimen such that the gas mixes with volatile organic compounds (VOCs) present in the specimen to create a VOC / gas mixture that is released into the headspace, collecting the VOC / gas mixture from the headspace in the vial, supplying the VOC / gas mixture to a chamber within the apparatus, causing the VOC / gas mixture to pass over a sensor array in proximity to the chamber, the sensor array generating an electrical signal as a function of VOCs detected in the VOC / gas mixture, and processing the electrical signal to determine the presence of a disease in the specimen.

This invention relates to materials, methods, and systems for carbon dioxide (CO2) capture. More specifically, this invention relates to materials, methods, and systems for removing, capturing, separating, and / or adsorbing carbon dioxide (CO2) from a gas mixture. Additionally, this invention relates to materials, methods, and systems for direct air capture (DAC) of CO2 from ambient air. This invention also relates to materials, methods, and systems for direct air capture (DAC) and methanation of CO2 from ambient air.

The invention discloses a cleaning method and equipment for improving the cleanliness of a solid surface. The cleaning method comprises the steps that a cleaning medium containing a cleaning liquid and a gas mixture is injected into a cleaning tank, gas exists in the cleaning medium in the form of micro-nano bubbles, the concentration of the micro-nano bubbles is 106-1012 / L, and the pressure of the gas is 0.01-2.00 MPa; ultrasonic waves with the frequency range of 1 kHz to 1 MHz are applied into the cleaning tank through a multi-frequency ultrasonic wave generating device; and the cleaning medium is adjusted to circularly flow in the cleaning tank so as to clean the surface of the solid. According to the solid surface cleaning method combining the micro-nano bubbles and the ultrasonic technology, the cleaning efficiency and effect are remarkably improved by optimizing generation, distribution and stability of the bubbles and accurately controlling interaction between ultrasonic waves and the bubbles.

The invention discloses process equipment and method for high-temperature nitrogen-free sintered magnesia, and belongs to the technical field of high-temperature combustion of industrial kilns, and the process equipment is composed of a calcining kiln, a bag-type dust collector, an induced draft fan, a gas cooler, a gas mixer, a liquid oxygen storage tank, a gasifier, PLC control equipment and a high-pressure fan. The oxygen content in the mixed gas is controlled to be 21-25%, artificial nitrogen-free combustion-supporting air is obtained to replace air to complete sintering of magnesia, air is not used, 79% of nitrogen components in the air are prevented from entering a combustion system, discharged tail gas is reduced by more than 2 / 3, heat loss in smoke is reduced, nitrogen oxide is not generated, catalytic reduction denitration is not needed, and the production cost is reduced. As the flue gas does not need to be heated, the energy consumption cost is saved. The concentration of carbon dioxide in discharged flue gas can reach more than 90%, liquid carbon dioxide is prepared through pressurization, and waste is turned into wealth.

The present disclosure provides a non-condensable gas reduction system that reduces the effects of atmospheric components contained in gas that is reduced in the reduction well. [Solution] A non-condensable gas reduction system in a geothermal power plant returns non-condensable gas that remains uncondensed when cooled from a first gas contained in geothermal fluid that springs from a production well to a reinjection well. The non-condensable gas reduction system comprises: a pump that pressurizes the first liquid sent to the reinjection well; an ejector that is driven by the first liquid, attracts the non-condensable gas, and discharges a second liquid that is a mixture of the first liquid and the non-condensable gas; and a gas separator connected downstream of the ejector that separates the second gas containing atmospheric components that has been mixed into the second liquid, and discharges the second gas into the atmosphere while discharging the second liquid into the reinjection well.

The invention relates to a hookah main machine with a reinforced atomization air channel and an electronic hookah. The hookah main machine specifically comprises a main machine body. The main machine is provided with a heating part, a second air inlet hole, an air outlet hole, a cavity used for containing tobacco materials and a heating part used for heating the tobacco materials. The second air inlet hole is communicated with the cavity and the air outlet hole to form the second air channel; wherein the number of the second air inlet holes is at least one; the second air inlet holes are formed in the periphery of the cavity; and when air is exhausted through the air outlet hole, external unheated air enters through the second air inlet hole, is mixed with the heated air around the cavity and is exhausted from the air outlet hole. By means of the second air inlet holes, the problems that tobacco materials in the tobacco bowl are only far away from the surface of the tobacco bowl and make contact with outside air, the air in the tobacco bowl is difficult to evenly enter the tobacco materials, the tobacco materials are not completely burnt, and the atomization effect of the tobacco materials is poor are solved, and it is ensured that cold air and heated gas of the tobacco materials are convectively atomized in the using process and are discharged from the air outlet holes.

Disclosed are multi-cartridge hollow fiber membrane apparatuses and methods for gas separation using them. Each external pressure type membrane apparatus contains one or more series of cartridges wherein the cartridges within each series are arranged sequentially. The retentate gas generated by each preceding cartridge in the series is used as a feed gas to the next cartridge in the series, and the permeate gas generated by a cartridge following the first cartridge in the series is used as a sweep gas on the permeate side of the preceding cartridge. The multicomponent gas mixture is separated into one or more products by the method of the invention with improved product recovery and / or product purity.

The invention relates to the technical field of gas mixing, and discloses a natural gas hydrogen-doped mixer which comprises an injector, a mixing pipeline and a rectifying piece, the injector comprises a central cavity and at least one annular cavity, the central cavity and the annular cavity are coaxially arranged, the annular cavity is located on the peripheral side of the central cavity, the central cavity is used for introducing natural gas, and the annular cavity is used for introducing hydrogen; in the flowing direction of the natural gas, the through-flow area of one side, close to the outlet, of the central cavity is gradually increased; the mixing pipeline is connected with the injector, and the rectifying part is arranged in the mixing pipeline. In the natural gas hydrogen-doped mixer, the hydrogen surrounds the natural gas jet flow, due to the fact that the speed difference exists between the natural gas and the hydrogen, the hydrogen sprayed at a high speed drives the natural gas flowing at a low speed after entering the mixing pipeline, the natural gas and the hydrogen are mixed in the shear layer, and the effect is good. The through-flow area of one side of the outlet of the central cavity is gradually increased, on one hand, the injection range of the natural gas is increased, the contact area of the natural gas and hydrogen is increased, and the mixing effect is better.

The invention discloses an acid-making process using hydrogen sulfide waste gas and waste sulfuric acid, and relates to the technical field of acid-making processes, and the acid-making process specifically comprises the following steps: step 1, high-temperature reaction and gas generation, step 2, gas purification and conversion, a demister and a spraying assembly are used for removing dust, impurities and harmful substances in the gas; and step 3, sulfur trioxide absorption and sulfuric acid preparation. According to the acid-making process using the hydrogen sulfide waste gas and the waste sulfuric acid, the absorption slurry is sprayed out through the nozzle to be in countercurrent contact with the gas mixture, physical absorption and chemical reaction are combined, dust, impurities and other harmful substances in the gas mixture are effectively removed, and the gas purification efficiency is improved; the nozzles at the upper end and the lower end are used for spraying and cleaning the corrugated plate, it is ensured that the corrugated plate is always kept clean, system efficiency reduction caused by blockage or pollution of the corrugated plate is reduced, and the operation efficiency and stability of the whole system are improved.

The invention discloses micron-sized Cu powder and a preparation method thereof.The method comprises the steps that raw materials are placed in a heating chamber, the heating chamber is vacuumized so that the vacuum degree can reach 80-150 KPa, and inert gas is introduced; the raw materials are subjected to heating treatment, the heating treatment temperature ranges from 1300 DEG C to 1700 DEG C, and the heat preservation time ranges from 10 min to 20 min; and cooling treatment is conducted on the Cu steam, the cooling treatment comprises the steps that the Cu steam and inert gas are mixed and then supplied into a closed space with a condenser, the flowing speed of the Cu steam and the inert gas supplied into the closed space is not lower than 500 ml / s, and the temperature difference of a cooling medium in the condenser before and after cooling treatment is not larger than 30 DEG C. According to the method, the micron-sized Cu powder which is uniform in size distribution and good in roundness can be obtained through simple operation.

Method for the preparation of sorbent material for use as adsorbent for carbon dioxide separation from a gas mixture, the sorbent material having primary amine or secondary amine moieties, or a combination thereof, immobilised on a solid support, wherein the sorbent material has primary amine or secondary amine moieties, or a combination thereof, is treated so as to have, after treatment, a total metal impurity content below 1400 ppm.

The invention discloses a natural gas hydrogen-doped or pure hydrogen verification and calibration loop. The loop comprises a gas supplementing and exhausting device, a filtering device, a circulating fan, a heat exchanger, a temperature control system, a bypass adjusting device, a working-grade standard device, a detected device, a transmission turbine device and a verification control system which are sequentially connected according to a gas flowing sequence to form the loop, the calibration method comprises the following steps: step 1, analyzing an obtained gas component xi by a mass spectrum analyzer; 2, calculating a contrast density function # imgabs0 # and a contrast temperature function # imgabs1 #; 3, assuming the molar density rho value of the gas mixture to obtain the contrast density delta and the reciprocal tau of the contrast temperature of the gas mixture; and 4, calculating to obtain comparison Helmholtz free energy # imgabs2 # binary comparison Helmholtz free energy # imgabs3 # and ideal Helmholtz free energy # imgabs4 #. The loop and the calibration method effectively solve the problems of verification and calibration of the detected flowmeter for trade measurement of natural gas doped hydrogen or pure hydrogen gas.

The present disclosure relates generally to a system for inflating a balloon and more particularly to a system and methods by which parameters for an inflation process are defined based on design and location of a balloon. Particularly, the system is configured to, automatically or in response to a user input, execute an inflation process to facilitate providing a defined minimum amount of a lighter-than-air gas followed by one or more supplemental gases to create a mixture within the balloon. Advantageously, the system may be configured to optimize an amount of each gas injected based on a design and location of the balloon and output an interface including costs, savings, and parameters relating to the location, design, and / or gaseous mixture.

There is provided a method for nitrogen oxide (NOx) synthesis, the method comprising: - providing a gas mixture comprising oxygen and nitrogen in a plasma reactor chamber; and - exciting the gas mixture into plasma in the plasma reactor chamber, wherein a duration of the excitation is in the range ≥0.15 / P nanoseconds & ≤90 / P nanoseconds, wherein P is pressure of the gas mixture in atm, and wherein the gas mixture is provided at a pressure P of ≥ 1.1 atm.

The invention belongs to the field of simulation optimization control, and particularly relates to a biomass gas blending combustion parameter optimization simulation control system based on combustion product prediction, and the system comprises an acquisition module which carries out data preprocessing based on multi-source pilot frequency sampling and through frequency division domain adaptive filtering and variable step size gradient descent optimization; the prediction module is used for predicting combustion product characteristic indexes through a mechanism and data driven double-layer fusion model; the control mapping module is used for obtaining a boiler control response parameter set by adopting deep reinforcement learning strategy network analysis under multi-target constraint; and the simulation adjustment module is used for loading control parameters in the digital twin platform, judging deviation based on a dynamic self-adaptive threshold value and triggering closed-loop feedback adjustment. According to the method, the problems of inaccurate pollutant prediction and control lag caused by fluctuation of biomass raw materials are solved, and feed-forward accurate control and closed-loop adaptive optimization are realized.

The invention discloses an atmospheric trace water-soluble metal element automatic sampling and pretreatment system, the system comprises an automatic sampling module and a pretreatment module, the automatic sampling module is provided with a gas introduction device, a gas corrosion device and a mixing growth chamber from front to back in sequence, and the mixing growth chamber is connected with the pretreatment module; the gas corrosion device is used for separating particulate matters and gas in a to-be-collected atmospheric sample, and the mixed growth chamber enables the particulate matters to grow and condense in supersaturated water vapor to obtain a primary sample; the pretreatment module comprises a sample enrichment unit and an automatic calibration unit; the sample enrichment unit is used for carrying out enrichment treatment on the primary sample through a bubble remover and a plastic injector; the automatic calibration unit is used for sequentially carrying out acid pickling, water washing, sample dilution and quantitative calibration on the enriched sample to finish the pretreatment process of the sample; according to the system, the sampling efficiency and the data reliability are remarkably improved, the automation degree is high, manual operation is reduced, personal errors are reduced, and the monitoring efficiency is improved.

The utility model belongs to the technical field of metal matrix composites, and relates to a metal matrix composite preparation device which comprises a metal melting furnace, a reinforcement conveying device and a blowing mixing device, and the reinforcement conveying device is connected with the blowing mixing device so as to convey reinforcements to the blowing mixing device; the injection mixing device is provided with an air inlet and a nozzle communicated with the air inlet, the nozzle is inserted into a cavity of the metal melting furnace, the nozzle is arranged below the liquid level of metal melt in the metal melting furnace, and the nozzle is further communicated with a reinforcing body conveying device. And the reinforcing body is fed into the metal melt in the metal melting furnace through gas introduced into the gas inlet. According to the utility model, the enhanced body is mixed with the gas through the injection mixing device, and then is directly blown into the melt in the metal melting furnace, so that the enhanced body is more uniformly stored in the melt, and the agglomeration is avoided.

A gas measuring device (100) for analyzing a gas mixture (310) and monitoring an environment (300) has a housing (110) for delimiting a measurement interior volume (120) and / or for separating the measurement interior volume (120) from the environment (300) containing the gas mixture (310). The housing has a gas inlet (111) and a gas outlet (112) for respective fluid-conducting connection between the measurement interior volume (120) and the environment (300), and an electrochemical gas sensor unit, which is arranged within the measurement interior volume (120), and which serves for determining a concentration of a gas fraction, in particular an oxygen fraction, contained in the gas mixture (310).The gas measuring device (100) has a heating element (220) and with an open-loop and / or closed-loop control system (230) to increase or maintain an interior temperature (TI) of the measurement interior volume (120) and settable by means of the control system (230).

The invention discloses a method for increasing the gas temperature at the top of a hydrogen-rich carbon circulating oxygen blast furnace. A combustion heat storage device for burning decarbonized coal gas is installed at the throat steel brick of the hydrogen-rich carbon circulating oxygen blast furnace. The combustion tube of the combustion heat storage device adopts high-speed airflow jet heating technology. The decarbonized coal gas and compressed air flow and mix in a certain proportion in the combustion tube, and are ignited and burned by an electronic spark device on the inner tube wall to form a stable heat source. 85-94% of the mixed gas is burned in the tube, and the rest is completely burned in the heat storage tube. A large amount of excess coal gas, flue gas and hot gas are ejected at a high speed of 110-250m / s, so that strong convection heat transfer is generated in the hydrogen-rich carbon circulating oxygen blast furnace, and due to the strong stirring of a large amount of gas, the mixing temperature of the low-temperature coal gas at the top of the hydrogen-rich carbon circulating oxygen blast furnace is uniform.

This invention relates to an advanced method for detecting and analyzing scent profiles using an intelligent gas sensor array system. The method involves acquiring an initial data set from a sensor array exposed to a gas mixture, followed by performing a coarse analysis to determine a superset of scent profiles, which includes various subset scent profiles within the gas mixture. Based on this preliminary analysis, a set of refinement parameters is established, leading to the adjustment of operational parameters of the sensor array. These parameters include sampling rate, duration of sensing, sensor selection, heating profile, and energy feed to selected sensors, which are tailored to enhance the specificity and accuracy of the subsequent analysis. The method further includes acquiring an expanded data set under these optimized conditions, allowing for a refined analysis of the gas mixture. This refined analysis is specifically designed to accurately identify the presence of target scent profiles, utilizing the enhanced sensitivity and specificity provided by the adjusted sensor array settings.

The utility model belongs to the technical field of ethylene glycol preparation, and particularly relates to an esterification purge gas treatment device in a process of preparing ethylene glycol from synthesis gas, which comprises an MN recovery tower, a gas mixer, a tail gas heater, a tail gas reactor, a cooler and a tail gas absorption tower, tower top outlet gas of the MN recovery tower and purge gas from PSA desorption gas of a hydrogenation unit enter a gas mixer, are mixed in the gas mixer, then enter a tail gas heater to be heated and then enter a tail gas reactor to react, an outlet of the tail gas reactor is connected with an inlet of a cooler, an outlet of the cooler is connected with a tail gas absorption tower, and an outlet of the tail gas absorption tower is connected with an outlet of the MN recovery tower. The tail gas absorption tower is connected with a spray water inlet pipe and a waste gas discharge pipe; and the tail gas reactor is a fixed tubular reactor. According to the device, nitrogen oxide which cannot be directly discharged in esterification purge gas can react to generate harmless gas such as nitrogen and nitrogen dioxide, environmental pollution is avoided, the device can adapt to the shutdown working condition of an esterification system, air does not need to be supplemented to the MN recovery tower, and the technological operation risk is reduced.

The invention discloses a gas hydrate cold storage device and method, and belongs to the field of cold storage and energy conservation. A cover is arranged on the hydrate generation kettle, an exhaust port and an air inlet are formed in the cover, and a liquid outlet and a liquid inlet are further formed in the side face of the hydrate generation kettle; the output end of the air storage tank is sequentially connected with an air pump, a one-way valve I, a control valve, a compressor and an air inlet; the carbon dioxide generating tank is connected with the input end I of the gas storage tank, and a one-way valve II is arranged between the carbon dioxide generating tank and the input end I of the gas storage tank; a one-way valve IV is arranged between the separator and the gas storage tank; and a heat exchange pipe is arranged on the outer side of the hydrate generation kettle. According to the device, the fusion efficiency of gas and water can be improved, gas which cannot be fused with water can be introduced into the cylinder again, and after the gas is mixed with gas in an original pipeline, the gas in the original pipeline is cooled in advance and then enters a hydrate reaction kettle to rapidly reach the preset temperature, and the fusion efficiency is further guaranteed.

Gas turbine power plant flue gas carbon dioxide capture system and method, which relates to the field of purification and treatment of flue gas pollutants. It solves the problems that in the existing carbon dioxide capture of gas turbine power plants, the physical separation method has high energy consumption and is not suitable for large-scale capture, and the chemical absorption method has environmental pollution and great capture difficulty. In the present invention, after the flue gas is cooled twice before and after passing through a cold water heat exchanger and a refrigerant heat exchanger in sequence, the low-concentration carbon dioxide flue gas is adsorbed and enriched by a carbon dioxide molecular sieve group, and the carbon dioxide mixed gas and the high-pressure impurity mixed gas are separated, and the carbon dioxide mixed gas is compressed and cooled by a compressor and a refrigerant heat exchanger, so as to realize the liquefaction and separation of low-concentration carbon dioxide. The present invention mainly purifies and treats flue gas pollutants.

The invention relates to the technical field of flame retardant property detection of fireproof materials, in particular to a detection device and a detection method for evaluating the flame retardant property of a facing type fireproof coating. According to the detection device, a combustion space close to an actual building environment is provided, on one hand, the state of the ventilation opening is adjusted through the electric louver, different ventilation conditions such as natural ventilation, mechanical ventilation or ventilation blocking when a fire occurs are simulated, and the coating is tested in various airflow environments; on the other hand, a heat radiation source is arranged to simulate a heat radiation environment around a material in a fire, non-uniform heat radiation intensity distribution is set to be similar to a real fire scene heat source complex condition, and the performance of the coating under different heat radiation conditions is tested. Besides, the gas mixer can dynamically adjust the oxygen concentration in the cabin according to the test requirement, so that the conventional oxygen index test is met, the oxygen content change in the fire process can be simulated, and the flame-retardant performance of the coating in the actual oxygen content fluctuation scene is explored.