1228 results about "Gas phase" patented technology

The invention discloses a gas self-excitation modulation device, an enhanced pollution aeration treatment system and an application method of the enhanced pollution aeration treatment system, through the arrangement of the gas self-excitation modulation device, intermittent modulation airflow matched with an orifice bubble generation process is formed, the instantaneous pulse acting force for upward separation of bubbles is increased, the bubble generation time is shortened, and the aeration bubble size is reduced; and the mass transfer rate of the gas-liquid interface is further improved. According to the invention, the existing laid aerator does not need to be replaced, the aerator material does not need to be modified, and the method is widely applicable to microporous aerators in any form; a water phase does not need to be driven to flow, so that energy consumption is greatly reduced, and adverse disturbance to a target water body is avoided; compared with a gas dissolving method and a jet flow air entraining method, the technology only drives a gas phase to enter a liquid phase, energy is saved, and meanwhile full-amount treatment of target liquid can be achieved. In addition, through sectional arrangement of the oscillation cavity self-excitation unit and the outflow unit, batch application can be carried out.

The invention discloses a method and a system for identifying mixed gas in transformer oil, a product and a medium, and relates to the technical field of testing or analyzing materials by means of measuring chemical or physical properties of the materials, and the method comprises the following steps: acquiring an internal structure diagram of a transformer, determining spatial position relations of parts and corresponding temperature distribution characteristics, and obtaining solubility differences of different spatial positions according to the spatial position relations and the corresponding temperature distribution characteristics. During operation, mixed gas concentration data of a plurality of detection points are collected, initial gas concentration data are recorded when an operation threshold range is deviated, and gas concentration change data are corrected according to solubility differences of different temperature zones. Calculating gas concentration space-time distribution characteristics, and determining a gas accumulation area according to the gas concentration space-time distribution characteristics and a space position relation. And separating the mixed gas components by using a gas chromatographic method, comparing preset gas types with the content of each component, and determining the corresponding gas type of each internal region. By implementing the method, the accuracy of identifying the types of the mixed gas in the transformer oil can be improved.

The invention relates to the technical field of liquid hydrogen storage and transportation, and discloses a liquid hydrogen container heat insulation performance rapid detection method, which comprises: S1, measuring the specification of a liquid hydrogen container and the initial state parameter in the liquid hydrogen container; s2, calculating initial parameters of liquid hydrogen and hydrogen in the liquid hydrogen container; s3, the change rate of the state parameters in the liquid hydrogen container is measured, and the final state parameters in the liquid hydrogen container are monitored; s4, calculating final parameters of liquid hydrogen and hydrogen in the liquid hydrogen container; s5, calculating the evaporation mass flow rate of the gas-liquid interface of the liquid hydrogen container according to the change rate of the state parameters in the liquid hydrogen container; s6, the thermodynamic energy change rate of hydrogen and liquid hydrogen in the liquid hydrogen container is calculated; s7, calculating the total internal energy change of the liquid hydrogen container, and calculating the total heat transfer amount of the gas phase and the liquid phase of the liquid hydrogen container; and S8, comparing the total heat transfer amount of the gas phase and the liquid phase of the liquid hydrogen container with standard static evaporation rate data to obtain the heat insulation performance of the liquid hydrogen container. The detection method has the characteristics that hydrogen does not need to be discharged, and the detection precision and safety are improved.

The invention relates to the technical field of chemical engineering, in particular to a simple and safe ammonia residual gas recovery system which comprises a liquid ammonia storage tank (1), an accident ammonia absorption tower (2), a circulating pump set, a gas phase pipeline and a liquid phase pipeline, the circulating pump set comprises a circulating water pump, a compression pump and a waste heat recovery pump, the waste heat recovery pump is connected with a steam valve, and the liquid ammonia storage tank (1) is connected with a gasifier (11). The vaporizer (11) is connected with the buffer tank (12), the buffer tank (12) and the accident ammonia absorption tower (2) circulate pure ammonia gas through a gas phase pipeline, the accident ammonia absorption tower (2) and the liquid ammonia storage tank (1) circulate pure liquid ammonia through a liquid phase pipeline, the absorption tank (21) adsorbs exhaust gas detected by the accident ammonia absorption tower (2), and recovered nitrogen is used for purging the liquid ammonia storage tank (1), so that escape-free environment-friendly treatment and recycling of ammonia are realized.

The invention relates to the technical field of reactors, and discloses a uniform gas-liquid distribution suspended bed reactor for heavy oil hydrogenation, which comprises a reactor shell, a gas-liquid distribution disc is horizontally arranged at the lower end of an inner cavity of the reactor shell, a Venturi annular gas-liquid diffuser is arranged on the gas-liquid distribution disc, and a pre-distribution chamber is formed at the bottom of the gas-liquid distribution disc; the Venturi annular gas-liquid diffuser comprises an outer gas guide pipe arranged on the gas-liquid distribution disc in a penetrating mode. According to the Venturi annular gas-liquid diffuser, through the synergistic effect of a liquid-phase flow annular nozzle and a gas-phase flow annular nozzle, a liquid phase sprayed out at a high speed is actively sheared and broken relative to a low-speed gas phase, and uniform small bubble groups can be generated, so that the gas-liquid contact area is greatly increased; the dissolution rate and the mass transfer efficiency of the hydrogen into the heavy oil are remarkably improved, so that the hydrogenation reaction depth and the product quality are directly improved, and meanwhile, the catalyst in a catalyst suspended bed reaction zone is effectively protected.

The invention relates to an analogue simulation-based gas atomization pulverization analysis optimization method, which comprises the following steps of: constructing a two-dimensional axisymmetric geometric model of gas atomization equipment, and setting boundary conditions; respectively simulating flow field evolution and particle size distribution by combining a single gas phase model, a VOF two-phase flow model and a DPM discrete phase model based on the geometric model; and according to a simulation result, analyzing and optimizing baffle parameters in gas atomization powder preparation. According to the method, details which are difficult to observe in an experiment can be captured, and a simulation result can be visually displayed, so that analysis and understanding are facilitated; and meanwhile, a baffle is added into the two-dimensional geometric model, and parameters of the two-dimensional geometric model are optimized through analogue simulation, so that the particle size, the distribution condition and the atomization efficiency of the powder are improved.

The utility model relates to the technical field of gas-liquid redistributors, and discloses a gas-liquid redistributor for a small packed tower, which comprises a distribution plate, gas uniform distribution holes and liquid uniform distribution holes are arranged on the distribution plate and are arranged on different circles taking the center of the distribution plate as the center, and the gas uniform distribution holes and the liquid uniform distribution holes are arranged on each circle. The gas uniform distribution holes and the liquid uniform distribution holes are alternately distributed, the distances between two adjacent circles are equal, and the liquid distribution holes of the two adjacent circles are distributed in a staggered manner; a gas distribution pipe and a liquid distribution pipe are respectively arranged above and below the distribution disc, the gas distribution pipe is connected with the gas uniform distribution holes, and the liquid distribution pipe is connected with the liquid uniform distribution holes. The gas-liquid redistributor disclosed by the utility model is suitable for being used in a small-sized gas-liquid mass transfer packed tower, has a simple structure, cuts a gas phase into smaller gas flows, uniformly distributes liquid into smaller liquid drops, and increases the contact area between the liquid and the gas, thereby improving the mass transfer efficiency.

A thermal plasma can be generated using a pair of electrodes spaced apart from each other by a gap along a first direction. One or more reactants can be conveyed into and / or through at least a portion of the generated plasma. For example, the portion of the generated plasma can subject the reactant(s) to a temperature of at least 1000 K. As a result, the one or more reactants can undergo a thermochemical reaction that converts the one or more reactants into one or more products.

The present invention refers to a SiC and Chlorosilane production system 2540, comprising at least one CVD SiC production reactor 850, in particular SiC fluidized bed reactor 850a, in particular according to claim 9, and a Chlorosilane production unit 2550, wherein the Chlorosilane production unit 2550 comprises at least a bed reactor 2416, in particular a fixed bed reactor or a fluidized bed reactor, for generating Chlorosilanes by reacting at least one fraction of the vent gas mixture provided via the vent gas outlet 216 of the CVD SiC production reactor 850 and Si, wherein further fractions of the vent gas mixture at least comprise H2 and a C-bearing molecule, in particular methane, and wherein Si is provided as solid 2398 inside the bed reactor 2416.

The invention relates to the technical field of separation and evaporation of sulfur trioxide, and discloses a device and a process for producing liquid sulfur trioxide by utilizing a film evaporator, the separation of gas-phase sulfur trioxide and low-concentration fuming acid is realized by utilizing the film evaporator, and the liquid sulfur trioxide is separated from the low-concentration fuming acid under the action of gravity and a rotary movable scraper of the film evaporator. Nicotinic acid forms an underspin film on the inner wall of the cylinder wall, and liquid is distributed into a uniform film, so that sulfur trioxide is quickly evaporated, and the evaporation capacity per unit area can be about 6-9 times that of a traditional evaporator; and meanwhile, under the action of high-speed rotating film scraping of the circumference, the heating time is short, the retention time of low-concentration nicotinic acid on the wall surface is shortened, and corrosion of the low-concentration nicotinic acid to the inner wall of the cylinder body at high temperature is avoided. According to the invention, the cyclone is arranged in the film evaporator, so that the material is prevented from being carried by gas, the removal efficiency of fog drops with the particle size of more than 1 micron reaches more than 99.9%, and the evaporation rate can be effectively improved by 1.0-2.6%.

Disclosed herein are methods and systems for the recovery of uranium from used fuel salts using nonaqueous chemistry without electrometallurgy techniques. The used fuel salts are maintained in a molten state in a chlorination chamber, and are then chlorinated for a period of time sufficient to convert at least some UCl3 into a different uranium chloride, thereby generating a uranium-containing gas phase. The uranium-containing gas phase is separated from the resulting residue, and is condensed for collection.

An electric heater to heat a flow of a fluid having a jacket block comprising a plurality of longitudinal bores to allow the through-flow of a gas phase medium. An elongate heating element extends through each of the bores and is positionally stabilised within the jacket block via a plurality of stabilising fins that project radially inward to at least partially surround the elongate heating element within each of the bores.

The invention provides a gas phase transportation optimization device based on a PVT method. The device comprises a crucible, the interior of the crucible is used for containing raw materials to form a raw material area, seed crystals are arranged at the top of the crucible, and a heater is arranged on the periphery of the crucible; the at least one stage of conveying mechanism is arranged in the crucible, and the multiple stages of conveying mechanisms are arranged at intervals in the radial direction of the crucible; wherein each stage of conveying mechanism extends from the bottom of the crucible to the top of the crucible, a conveying channel is formed in each conveying mechanism, and the conveying channels are used for promoting gas-phase substances formed by sublimation of raw materials to be conveyed from the raw material area to the surface of the raw material area; and the extension terminal, close to the top of the crucible, of the conveying mechanism is located above the surface of the raw material area, so that the gas-phase substances are promoted to escape from the surface of the raw material area through the conveying channel. According to the device provided by the invention, the problems that gas-phase substances are difficult to transport in a raw material area in the single crystal growth process by a traditional PVT method, and meanwhile, the gas-phase substances are recrystallized on the surface of the raw material area, so that self-escape is hindered are solved.

This method for producing a halogenated alkene comprises converting a halogenated alkane which has 2-4 carbon atoms and contains a fluorine atom into a halogenated alkene which has 2-4 carbon atoms and contains a fluorine atom in a gas phase in the presence of silicon oxide and an alkali metal element.

The method for producing a halogenated alkene converts a halogenated alkane having 2 to 4 carbon atoms and containing a fluorine atom into a halogenated alkene having 2 to 4 carbon atoms and containing a fluorine atom in the gas phase in the presence of silicon oxide and an alkali metal element.

A method for evaluating an unknown gas sample includes acquiring a chromatogram of the unknown gas sample and processing the chromatogram to identify a peak. The peak is evaluated to determine if it is representative of a single gas species in the unknown gas sample. The peak is fit with at least first and second curves when the peak is not representative of a single gas species. First and second areas under the corresponding first and second curves are computed and processed to compute a composition of the unknown gas sample or a ratio of concentrations of individual gases in the unknown gas sample.

The invention belongs to the technical field of reactors, and particularly relates to a multiphase unpowered reactor, which comprises a vertical shell, an upper reaction area and a lower liquid collection area are arranged in the shell, the reaction area is communicated with the liquid collection area through a cap hood, and the multiphase unpowered reactor is characterized in that an annular pipe is arranged in the middle of the reaction area and is connected with a feed port of the shell through a feed pipe; a plurality of horizontal circulating hydraulic sprayers are arranged on the annular pipe, and the axis of at least one horizontal circulating hydraulic sprayer is tangential to the outer side of the annular pipe; a cross pipe is arranged at the lower part of the reaction area; a plurality of vertical circulating hydraulic sprayers are arranged on the cross pipe; and the horizontal circulating hydraulic spray head and the vertical circulating hydraulic spray head are venturi mixed flow spray heads. The reactor has the beneficial effects that two sections of liquid-phase hydraulic sprayers are combined with the atomizing sprayers at the top of the reaction area at the middle section and the lower section of the reaction area of the shell to respectively form liquid flow in the vertical direction and the horizontal direction, so that the mixing effect of gas-phase, liquid-phase and solid-phase substances is enhanced, and the conversion efficiency is improved.

Embodiments presented provide for a multirotational counter rotating reactor. The reactor is configured to accept a fluid stream and separate the fluid stream into high quality liquid and gaseous phases through spinning of the sets of discs as well as through performing a heat transfer to the fluid stream.

A reaction system includes a vessel having a gas inlet and a gas outlet, a liquid within the vessel, a solid phase and a gas phase present within the vessel, and at least one liquid separator disposed within the vessel. The liquid has an upper liquid surface within the vessel, and the liquid separator is configured to remove at least a portion of liquid droplets generated based on the gas phase and the solid phase passing through the liquid.

The invention discloses an oil reservoir numerical simulation method considering oil-gas phase equilibrium change in micro-nano pores. The method comprises the steps that stability testing is conducted on a phase equilibrium grid to be calculated to preliminarily judge whether an oil-gas mixing system represented by the grid is in a two-phase state or a single-phase state; for the oil-gas mixing system in the two-phase state, iteratively calculating phase separation considering capillary force to obtain a final two-phase equilibrium composition; the stability discrimination method comprises the following steps: calculating the current capillary force of the oil-gas mixing system to obtain corresponding gas-phase pressure and liquid-phase pressure, and performing the stability test by using the gas-phase pressure and the liquid-phase pressure; the problem that the capillary force effect cannot be considered in actual oil and gas reservoir model simulation of a conventional complex geological structure and a large-scale grid is solved, and the technical precision and efficiency can be ensured at the same time, so that the method can be directly applied to an actual digital-analog process.

The invention relates to the technical field of hydrogen energy conveying and material performance testing, in particular to a testing structure for hydrogen permeation testing in a high-pressure gas-phase hydrogen environment and an installation method and application of the testing structure. The testing structure comprises a sample body and an insulation sealing assembly, and the sample body is of a double-step disc structure; the uppermost edge of the first sealing insulation assembly is flush with the upper end face of the cylindrical platform, the sample body is installed on the inner side of the first sealing insulation assembly in a matched mode, the second sealing insulation assembly is in a shape with an upward opening, and the first sealing insulation assembly is installed in the second sealing insulation assembly in a matched mode. The test surface of the sample body of the test structure and the gas main flow keep a consistent flow velocity field, and when the test structure is used for testing, the permeation behavior of the hydrogen flow on the material surface can be truly reflected; all the clamping and conducting structures are arranged outside the pipe wall of the test pipeline or at the left part of the sample body, so that flow field disturbance is prevented from being introduced into a main airflow path.

The invention discloses a high-gas-liquid-ratio gas-liquid two-phase flow and liquid holdup measurement method and device based on three-dimensional differential pressure, and the method comprises the steps: applying a centrifugal force to a gas-liquid two-phase flow through a centrifuge, and generating a stable gas nucleus-liquid ring separation structure; measuring radial differential pressure, axial differential pressure, temperature and pressure values of the centrifuge in real time; establishing a liquid holdup calculation model based on the differential pressure ratio of the radial differential pressure and the axial differential pressure, and obtaining the liquid holdup according to the liquid holdup calculation model; calculating a friction coefficient and corrected gas phase density according to the temperature and pressure values; and based on the mapping relation between the axial differential pressure and the gas phase apparent velocity and the gas state equation, the gas-liquid two-phase flow is calculated according to the liquid holdup, the friction coefficient and the corrected gas phase density. According to the invention, a high-precision, separation-free and fast-response industrial-grade solution is realized, and a new-generation measuring tool is provided for the key fields of shale gas exploitation, submarine oil and gas pipeline transportation and the like.

The utility model relates to a liquid hydrogen storage system which comprises an integrated hydrogen storage device and a hydrogen storage medium, the integrated hydrogen storage device comprises a liquid storage tank for storing a hydrogen storage medium, a gas storage tank for storing hydrogen, a reactor connected with the output ends of the liquid storage tank and the gas storage tank, a condenser connected with the reactor, a gas-liquid separator connected with the output end of the condenser, a gas compressor and a gas buffer tank, and one or more unsaturated aromatic hydrocarbons or heterocyclic unsaturated compounds with a saturated vapor pressure of more than 1 kPa and a temperature of 20 DEG C. The gas-phase storage medium of the liquid hydrogen storage system sequentially passes through the condenser, the gas-liquid separator, the gas compressor and the gas buffer tank, so that a hydrogen pressurizing, cooling and refluxing process is realized, a liquid hydrogen storage material can be effectively recycled, and the purity of hydrogen can be ensured.

A sealed and insulating tank for storing and / or transporting a liquefied gas has a sealed and self-supporting internal reservoir with an interior surface for contacting the liquefied gas and an outer surface with an insulating barrier covering the outer surface of the internal reservoir. The insulating barrier is fixed to the internal reservoir. An outer sealed membrane covers an outer surface of the insulating barrier, and the outer sealed membrane has a metal sheet provided with bellows or corrugations. The outer sealed membrane is fixed to the insulating barrier or the internal reservoir. An intermediate space between the internal reservoir and the outer sealed membrane contains a gaseous phase under depression in order to press the outer sealed membrane against the outer surface of the insulating barrier.

The invention relates to the technical field of data processing, in particular to a boron-11 electronic gas analysis method for trace impurity recognition, which comprises the following steps: acquiring a historical time sequence data sequence of the concentration of each gas phase element in a container for storing boron-11 electronic gas at the current monitoring moment; periodically dividing each historical time sequence data sequence to obtain suspected abnormal data in each data segment; according to suspected abnormal data in the recent time sequence data sequence of each gas phase element concentration, the recent monitoring data distribution change abnormal degree and the multi-type correlation change abnormal degree of each gas phase element concentration are obtained, and a self-adaptive concentration threshold value at the current monitoring moment is correspondingly obtained; according to the self-adaptive concentration threshold value corresponding to the concentration of each gas phase element, trace impurity abnormity monitoring is carried out on the boron-11 electron gas at the current monitoring moment, and the accuracy of trace impurity abnormity monitoring is improved by dynamically adjusting the fixed threshold value.

The invention relates to a gas-liquid separator (1) for an electrolysis plant, comprising a container (2) with an inlet (3) for introducing a gas-liquid mixture which separates in the container (2) into a gas phase (4) and a liquid phase (5) due to the Earth's gravitational field, with a gas outlet (6) for removing gas from the gas phase (4) and a liquid outlet (7) for removing liquid from the liquid phase (5). According to the invention, the gas-liquid separator (1) includes a controllable heating device (8) by means of which the container (2) can be heated. The invention further relates to an electrolysis plant with at least one gas-liquid separator (1) according to the invention and to a method for operating an electrolysis plant.

The invention provides a reactor and a dual-light-source mass spectrum device for in-situ detection of gas-phase species in a catalytic reaction. The reactor comprises a control part, a first tube body and a second tube body, the control part comprises a first shell and a switching piece; the first shell is provided with a first channel and a second channel which are arranged in the first direction. The switching piece is arranged between the first channel and the second channel; the first pipe body extends in the first direction and is located on the side, away from the second channel, of the switching piece. The first pipe body is communicated with the first channel; the second pipe body extends in the first direction and is partially located in the second channel. The second pipe body is connected with the first shell and can move in the first direction relative to the first shell. The switching piece moves relative to the first shell to control connection and disconnection of the first channel and the second channel. When the first channel communicates with the second channel, the second pipe body is allowed to partially extend into the second pipe body, and when the first channel is isolated from the second channel, the second pipe body is located on the side, away from the first channel, of the switching piece. The application of the reactor realizes material replacement on the premise of not breaking vacuum.

The invention belongs to the technical field of organic matter synthesis, and discloses an adiponitrile preparation device and method based on a falling film reactor. The stirring assembly and the falling film reactor are adopted, and the stirring assembly can achieve further uniform dispersion and rapid dehydration of liquid flowing out of the falling film tube. Meanwhile, heat supply is not needed in the stirring assembly, the temperature of the liquid can be further reduced, and side reactions after the materials enter the gas-liquid separation tank are reduced. In the reaction process, liquids such as adipic acid and adiponitrile are uniformly dispersed in a gas phase, the local concentration is prevented from being too high in the heating process, water is rapidly separated in the reaction process, and the product yield is increased.

The invention discloses a gas spray header, vapor deposition equipment and a use method of the gas spray header. The gas spray header comprises a gas distribution plate, a plurality of first gas holes and a first conveying channel distributed on the gas distribution plate at intervals. The second gas holes are distributed in the second conveying channel on the gas distribution plate at intervals, and the first gas holes and the second gas holes are used for supplying the first gas and the second gas to the surface of the substrate to be processed. The first gas conveying channel located in the center of the gas distribution plate is called a center first gas conveying channel, and the second gas conveying channel adjacent to the center first gas conveying channel is called a center second gas conveying channel. Outlets of the second gas center gas supplementing holes are distributed in the area where the center first gas conveying channel is located at intervals, and the second gas center gas supplementing holes are used for supplementing second gas to the center area below the gas distribution plate. According to the invention, the distribution uniformity of the gas-phase precursor in the central area of the reaction cavity is improved.