129 results about "Gas flux" patented technology

A method of calculating the flux of any gas (x) in a CBC circuit for a ventilated or a spontaneous breathing subject, for example said gas(x) being; a) an anesthetic such as but limited to; i)N2O; ii) sevoflurane; iii) isoflurane; iv) halothane; v) desflurame; or the like b) Oxygen; c) Carbon dioxide; or the like utilizing the following relationships; Flux of gas(x)=SGF (FSX−FEX) wherein SGF=Source of gas flow into the breathing circuit (CBC circuit) in liters / minute as read from the gas flow meter as set by the anesthesiologist; FSX=Fractional concentration of gas X in the source gas (which is set by the anesthesiologist); FEX=Fractional concentration of gas X in the end expired gas as determined by a portable gas analyzer, or the like.

Applicant's present invention comprises mass spectrometer systems that operate in a mass range from 1 to 1016 DA. The mass spectrometer system comprising an inlet system comprising an aerodynamic lens system, a reverse jet being a gas flux generated in an annulus moving in a reverse direction and a multipole ion guide; a digital ion trap; and a thermal vaporization / ionization detector system. Applicant's present invention further comprises a quadrupole mass spectrometer system comprising an inlet system having a quadrupole mass filter and a thermal vaporization / ionization detector system. Applicant's present invention further comprises an inlet system for use with a mass spectrometer system, a method for slowing energetic particles using an inlet system. Applicant's present invention also comprises a detector device and a method for detecting high mass charged particles.

The invention discloses a vehicle particle emission measuring device which comprises a particle concentration tester and a data recording and processing module. A tail pipe is sequentially connected with a sampling probe and a sampling dilutor before being communicated with the particle concentration tester, thereby forming a gas flux channel. The sampling dilutor is connected with a diluting control device. The particle concentration tester is connected with a vacuum pump. A pressure sensor and an exhaust flow-meter are arranged in the tail pipe respectively. The pressure sensor, the exhaust flow-meter and the particle concentration tester transmit signals to a data recording and processing module respectively. The invention also discloses a method employing the mentioned measuring devices for vehicle particle emission measurement. The device of the invention arrives at the amount of the mass of particle matters exhausted during the testing process by calculating the data collected by relevant devices, instead of weighing, and can reflect objectively the weight of particle matters exhausted during any test time period, which in turn can play an important role in making effective control tactics.

A system for obtaining emission flux of a gas plume, emanating from a source, includes an airborne differential absorption lidar (DIAL) system for determining multiple concentration path length (CPL) values along a flight path; and an airborne wind measuring system (WMS) for determining a wind vector at the aircraft altitude. Also included is a processor for receiving the multiple CPL values determined by the DIAL system and the wind vector determined by the WMS. The processor uses the CPL values to compute either (a) an area-integrated concentration (AIC) value or (b) an average concentration value over a cross-plume extent, defined along the length dimension of the flight path. The processor also scales the wind vector to the near ground altitude level of the gas plume to obtain a scaled wind vector. The emission flux is obtained by multiplying either the AIC value or the average concentration value with a component of the scaled wind vector. The component of the scaled wind vector is defined by a vector perpendicular to the length dimension of the flight path.

A method for determining a flux of a gas contained in a medium through a boundary of the medium comprises 1) measuring at least twice with a probe a concentration C of the gas over a time interval Δt and 2) determining the flux of the gas using the following mathematical equation: (I) where F is the gas flux, D is the diffusivity value and ΔC is a variation in the gas concentration during the time interval Δt. The probe is placed proximate the boundary. The probe has a gas inlet, a cavity, a gas concentration sensor and a membrane. Each element is in fluid communication with each other so that the gas flows from the gas inlet through the membrane and contacts the gas concentration sensor.F=(D∂C(z,t)∂z)z=0=DΔCπΔt(I)

A system for obtaining emission flux of a gas plume, emanating from a source, includes an airborne differential absorption lidar (DIAL) system for determining multiple concentration path length (CPL) values along a flight path; and an airborne wind measuring system (WMS) for determining a wind vector at the aircraft altitude. Also included is a processor for receiving the multiple CPL values determined by the DIAL system and the wind vector determined by the WMS. The processor uses the CPL values to compute either (a) an area-integrated concentration (AIC) value or (b) an average concentration value over a cross-plume extent, defined along the length dimension of the flight path. The processor also scales the wind vector to the near ground altitude level of the gas plume to obtain a scaled wind vector. The emission flux is obtained by multiplying either the AIC value or the average concentration value with a component of the scaled wind vector. The component of the scaled wind vector is defined by a vector perpendicular to the length dimension of the flight path.

The invention relates to a matrix type dielectric barrier discharge plasma odor processing device which is characterized by comprising a housing, discharge dielectrics, a fixing device, electrodes, electrode outgoing lines, discharge zones and a pulse power supply, wherein the discharge dielectrics are arranged by the fixing device in a matrix type, the electrodes are arranged in the discharge dielectrics and are connected with the pulse power supply through the electrode outgoing lines, and the discharge zones are arranged between the neighboring discharge dielectrics. The odor processing device can be convenient for regulating according to the concentrations of pollutants and the processing air amount of waste gas with foreign smell to make the strength generated by plasma match with the strength of the waste gas to be processed, thereby achieving the optimal pollutant removing effect and running energy consumption. The air resistance and the additionally applied voltage of the plasma reaction system are greatly reduced, the gas flux is enlarged, and the removing efficiency of odorants is improved by above 30%. The device has the advantages of compact structure, good processing effect on the pollutants with the odor and high efficiency and wide generalization and application prospect, and can be widely applied to processing waste gas containing the odorants, such as styrene, hydrogen sulfide, carbon disulfide, organic amine and the like.

A system is provided for determining emission rate of a gas from a source. The system includes a selector for designating an in-plume area extending across a plume of gas. The in-plume area includes a length dimension greater than a width dimension. The system also includes a processor for determining an area-integrated concentration value for the in-plume area. The system further includes a wind vector received by the processor. The processor determines the emission rate of the gas based on the area-integrated concentration value and a vector component of the wind vector.

A gas balance bag is put into a closed box in use for measuring gas flux discharged by soil or plants. An amount of air is filled into the gas balance bag from small hole in the closed box, making the gas balance bag expand so as to take up certain volume in the closed box. Then, extracting gas measuring and calculating processed result are carried out according to traditional method suitable to closed box. The gas balance bag adjusts consistent air pressure between inside box and outside box. Comparing with measuring in site or in lab, the invention measures gas flux discharged by soil or plants accurately and reduces error.

A gas flux measuring device measures a region, such as a forest, as a measuring object with no influence by concomitants and with high responsiveness and excellent measuring stability. The device includes a laser beam source, laser output controller, wavelength modulation controller, first light receiver, first direct current component detector, first wavelength modulation demodulator, optical system, reference cell, second light receiver, second direct current component detector, second wavelength modulation demodulator, third wavelength modulation demodulator, analyzer, adder, temperature measurement and pressure measurement. A flow velocity measuring device directly measures horizontal 2-directional flow velocity components and a vertical directional flow velocity component of a gas flow in the measuring region and puts out these measurement signals into the analyzer. Based on the signals inputted from the flow velocity measuring device, the analyzer makes an analysis based on the eddy correlation method and obtains, by calculation using this analysis result, a momentum flux and concentration of the measuring object gas.

The invention relates to a membrane system which is particular suitable for oxygen generation. It comprises a membrane (14), and a porous substrate (12) for supporting the membrane (14), wherein the substrate (12) comprises pillars (15) and defined channels (16) for bringing a gas in controlled contact with the membrane (14). This membrane system (10) allows a gas flux and is furthermore applicable for small and light devices.

The present invention discloses a silica-like membrane for separating gas, which is modified from poly(dimethylsiloxane) (PDMS) membrane by an atmospheric pressure high temperature plasma torch (APHTPT). Furthermore, the present invention of the separating gas silica-like membrane with an inorganic / organic interface structure which has both the gas flux of the organic membrane and also the gas selectivity of the inorganic membrane.

The invention discloses a blue light-excited white light fluorescent powder and its use and its manufacture process and device. Its molecular formula is aY2O3.bGd2O3. (1.5-a-b)Re2O3.2.5Al2O3.xSiO2, where Re is two or above of Ce, Eu, Tm and Tb; 0<a<1.5, 0<=b<1.5, 0<x<3; it can be used to manufacture white LEDs. Its process steps include preparing precursor solution, aerating, atomizing, reacting, collecting and after-processing. Its manufacture device includes a liquid fillingdevice, an atomization generating device, a gas supplying device, a gas flux control device, a reaction furnace, a powder collecting device, and a purifying processing device. The invention has simple process, high efficiency, good quality, and suitable for industrial production; and low-cost.

The invention relates to a method for continuously manufacturing aligned nanostructures on a running support, which comprises conveying the support through a heated space and synthesising, in this space, aligned nanostructures on the support by catalytic chemical vapour deposition. The heated space is divided into n consecutive zones in the conveying direction of the support (n being an integer ≧2), and the synthesis of the nanostructures results from heating and injection operations, in each of these n zones, of a flux of an aerosol containing a catalytic precursor and a source precursor of the material of the nanostructures to be formed, carried by a carrier gas. The injection operations are made by modifying, in at least two of the n zones, at least one parameter chosen among the flow rate of the carrier gas flux, the chemical composition of the carrier gas, the mass concentration of the catalytic precursor in the catalytic precursor and source precursor mixture. The invention also relates to a device for implementing this method.

The invention discloses a fusion welding of magnesium and Al heterogeneous metals, which adopts low magnesium Al alloy weld stick as the filling materials, the indifferent gas to protect, the electromagnetic pulse AC tungsten Ar arc to weld magnesium and Al. there into, the mass percentages of the weld stick are: magnesium is 0.5-3.0% with 2.0-3.0mm diameter; the said indifferent gas is Ar gas with purity more than 99.9%; the parameter of the tungsten Ar arc welding is: the basic current is 50-130A, the impulse current is 200-350A, the impulse time is 5-10s, the impulse frequency is 35-75Hz, the welding voltage is 24-26V, the welding speed is 1.0mm / s-1.8mm / s, the Ar gas flux is 10-18L / min, the extension length of the tungsten polar is 5-6mm, the distance between the welding torch jet and the working piece is 6mm-10mm, the thickness of the working piece is 1.5mm-14mm. the invention has high welding efficiency, low cost, convenient operation, and is suitable for the manufacturing of magnesium-Al heterogeneous compound structure.

The invention relates to a pre-treatment technology of raw material powder used for preparing induction plasma capacitor grade nanometer tantalum powder. The technology comprises the steps as follows: a. tantalum powder with the granularity of 2-10micrometer which is prepared by sodium thermal reduction is used raw material; b. spheroidizing treatment is carried out on the raw material tantalum powder by an induction plasma powder synthesizing system, the technological parameters of the spheroidizing treatment are as follows: medium gas flux is 30 standard liter / min; sheath gas flux is 80-120 standard liter / min of argon and 0-10 standard liter / min of hydrogen; reaction chamber pressure is 50-120Kpa; plasma power is 30-60KW; powder feed rate is 2-15kg / h; cooling gas flux is 300-800 standard liter / min; the relative position of a powder feeder is arranged at the middle part of a plasma area; powder feeding gas flux is 8-20 standard liter / min; c. filtering treatment is that vibration filter is carried out by a 160-220 mesh screen mesh on a screen grader; d. air current grading treatment is that grading treatment is carried out on a cyclone separator, the technological parameters of the g rading treatment are as follows: power feed rate is 2-5kg / h, and the grading gas flux is 300-600 standard liter / min. The invention can carry out the continuous preparation of capacitor grade nanometer and submicron tantalum powder and ensures that the raw material is spherical by spheroidizing, filtering and grading treatment, and the powder with the granularity controlled within 2-5 micrometer takes more than 90 percent of the whole powder; and the invention improves the granularity distribution state, overcomes the aggregation and improves the collection efficiency of the tantalum powder, the utilization rate of energy and material and the electrical property.

A composite membrane comprising a discriminating layer and a porous support layer for the discriminating layer, CHARACTERISED IN THAT the discriminating layer comprises at least 60 wt % of oxyethylene groups and the porous support layer has a CO2 gas flux of 5 to 150×10−5 m3 (STP) / m2·s·kPa at a feed pressure of 2.07 kPa. The membranes are particularly useful for purifying waste gas streams e.g. by removing greenhouse gases.

The invention discloses a sea-gas coupled real-time observation buoy system based on Beidou satellite and Iridium satellite double-satellite communication. The sea-gas coupled real-time observation buoy system comprises a sea-gas coupled observation sensor unit, a data collecting communication control unit, an anchoring unit, a buoy body platform, a power supplying unit and a data processing center. The buoy data collecting communication control unit adopts a Beidou satellite system to transmit conventional block method sea-gas flux, upper-layer sea current profile and buoy operation state parameters which have high requirements on data safety and low requirements on the communication quantity, and adopts an Iridium satellite system to transmit high frequency eddy related and high-resolution seawater skin surface temperature profile data which have high requirements on the communication quantity. A buoy can synchronously observe turbulence flux parameters of an eddy-related method of amovable platform, flux parameter of a block method, the seawater 0-1.0 m high-resolution skin surface temperature profile and the 0-70 m upper-layer sea current profile in real time in real time. Thesea-gas coupled real-time observation buoy system is suitable for being released in deep and open sea, and has the characteristics of diverse sea-gas interface observation parameter, safe data transmission and the like.

An apparatus and a method for measuring gas mass-transfer diffusivity of film material relate to an apparatus and a method for measurement of a film material. The apparatus comprises two connected vacuum chambers, that is, a measurement chamber and a plenum chamber of which the background leak rate has been determined. The measurement chamber and the plenum chamber are connected through an air exhaust channel with a sealing flange, the sealing flange faces to the side of the plenum chamber, and flange covers and seal rings are utilized for sealing and fixing a disc-shaped blind flange or a test piece; the plenum chamber is provided with an openable plenum chamber door for facilitating mounting or dismounting of the blind flange or the test piece; and the plenum chamber is provided with a plenum-chamber pressure gage, a pneumatic pipeline with a pressure-adjusting control valve and a pumping pipeline with a plenum-chamber valve. The apparatus employs a porous ceramic support material and accelerates gas transportation rate by utilizing a vacuum pump for making a larger pressure difference, and for film materials with low permeability, the apparatus can rapidly obtain stable gas pressure and gas flux data and has accurate measurement result.

The invention discloses a comprehensive tester, mainly used for debugging and calibrating various medical devices as anesthesia machines, ventilators, infusion pumps and the like. The comprehensive tester comprises a first gas source interface (A); a second gas source interface (B); a plurality of gas channels while each channel can be opened and closed; a plurality of pressure detectors (7) respectively arranged in the gas channels for detecting the gas pressures in the gas channels; and a plurality of flux detectors (9) respectively arranged in the gas channels for detecting the gas fluxes in the gas channels. The comprehensive tester can provide at least one gas source for test, can provide a plurality of independent gas channels of adjustable pressures and fluxes, and can independently test gas pressure of flux.

The invention relates to a steam driving laminated gas distributing system, and relative method, which is used in dense oil steam driving well, wherein said invention comprises an oil well measuring unit, an oil well gas filling data processing unit, a laminated gas distributing unit, a display output unit and a laminated testing unit; the oil well measuring unit and the laminated testing unit are connected to the data processing unit, to transmit the gas filling parameters to the data processing unit; and the data processing unit will transmit the laminated gas distributed amount to the laminated gas distributing unit, to distribute gas laminated; and the data processing unit is connected to the display output unit to output oil well information, each filling parameter and filling result. The invention can distribute the gas flux laminated, based on the gas distributed amount and the area of gas distribute hole of each layer.

The invention relates to an experiment set, in particular to an acoustic response characteristic simulation experiment set. The acoustic response characteristic simulation experiment set for seabed gas transfer and aquo-complex generation is characterized by comprising a pressure control system, a temperature control system, a detection system, a high-pressure reactor and a computer acquisition system. The pressure control system is communicated with the high-pressure reactor, the high-pressure reactor is arranged in the temperature control system, and the detection system is arranged in the high-pressure reactor and connected with the computer acquisition system. Combined with the bender element detection technology and time domain reflectometry (TDR), the acoustic response characteristic simulation experiment set can monitor change situations of acoustic parameters and aquo-complex saturability in the process of gas transfer and aquo-complex generation in real time, obtained experiment results are closer to seabed environment, and acoustic response characteristic research on generation of aquo-complex with different gas fluxes can be achieved.

The invention discloses a forecast and balance method for tank level of a coke oven gas of steel makers, which comprises the following steps of: determining main gas users having influence on variation of the tank level; based on mass of existing data, creating a tank level forecast model reflecting a relation between the gas tank level and each main gas user through a modern regression modeling method; creating a flux forecast model for each main gas user through the modern regression modeling method by using mass of existing data based on the time sequence forecast thought; forecasting variation trend of the tank level for some time to come; forecasting a gas flux forecasted value of each user according to the created flux forecast model, and inputting the gas flux forecasted value into the tank level forecast model to obtain a forecasted value of variation of the gas tank corresponding to each forecasting time. The forecast and balance method for the tank level of the coke oven gas of the steel makers can accurately forecast variation trends of keeping steady, increasing and descending of the tank level of the gas tank, and can provide rational guidance for on-site dispatchers to finish balance dispatching of the gas.

A passive sampling apparatus and method for measuring the cumulative mass of a selected gas being transported through a known cross-sectional area, for example, a soil surface, during a chosen period of time, using absorbent material, are described. Two quantities of absorbent material are disposed in a hollow container, such as a pipe section, and spaced apart such that they may be readily separated for analysis. The absorbent material closest to the soil captures the gas leaving the soil. Under reversed flow conditions, for example when the ambient air enters the ground because of fluctuations in atmospheric pressure, the upper absorbent material captures the component of interest entering the apparatus, thereby preventing this gas from entering the lower material and disturbing the measurement. The apparatus can therefore sequester the component of interest without being affected by the direction of gas transport.

The invention relates to a cumene oxidizing reaction catalyst and a preparing method and application thereof. The catalyst is nano alkaline earth metal oxide which an auxiliary is added, and the catalyst aperture is of 2-30 nm mesoporous structure; the auxiliary is one of CuO, MnO2, Co3O4, NiO, Cr2O3, ZnO and Fe2O3. The catalyst is nano alkaline earth metal oxide prepared through a hydrothermal synthesis method, and the auxiliary is added to the nano alkaline earth metal oxide, and then an ultrasonic impregnation method is used. The catalyst can be applied to cumene oxidizing reaction, according to the reaction condition, one gram of cumene reaction liquid contains 0.005-0.01 g of catalyst, the gas flux is 100-800 ml / min, the oxygen volume fraction is 20-80%, and the reaction temperature is 70-110 DEG C. The catalyst prepared through the method is high in activity, selectively, mild in reaction condition, high in economy and capable of being used in industrial production.

This invention discloses a kind of propylene oxidize unit DCS automation system in the crylic acid device which sets up the fresh propylene enter material flux automation system, the fresh air enter material flux automation system, vapor flux automation system, circle off-gas flux automation system, and sets up a minim water analyzer, oxygen content analyzer, propylene content analyzer, the control house setting up a DCS makes the output information of fresh propylene flux into the DCS as the main momentum signal and makes the vapor, fresh air, circle off-gas into the reactor flux signal and then into the DCS as the momentum signal all of them above composes the flux mixture ratio control system and the output signals of every analyzer enter the DSC and take part in the calculus; the merits of this invention are that uses the propylene material well and matches the vapor, the use level of oxygen, the use level circle off-gas reasonably and in the operation state concludes catalyst, temperature, pressure and so on the same state used in reactor that can reduce the manufacture cost and increase the yield and enhance the outcome 0.5 to 2 percent and ensure the operate security.

An absorbent includes a ferromagnetic nucleus with a one-layer or two-layer shell or devoid thereof and the nucleus is embodied in the form of a plate with a planar size that ranges from 500-5000 μm and the thickness is equal to 0.1-1000 μm. The method for producing the inventive magnetically-operated absorbent includes evaporating and / or melting a magnetic material powder in a low-temperature plasma, quenching and condensing the thus obtained vaporized and / or melt-particle product in a gas flux, and transferring the product precipitated in the form of crystals or micro slugs of corresponding metals, correspondingly to a stabilizer-containing dispersion medium and holding in the medium until a gas release is over. Then the crystals or micro slugs are processed by flatting, for example pressing so that the plates of a specified thickness are obtained.

This invention belongs to the thermal energy utilization device of the mine ventilation gas and includes the counter current circular channel, the centrally positioned porous material and high temperature resistant heat pipe. The mine ventilation gas is conducted circlewise to the bottom of the combustion center, rectified by the gas distribution board, and combusted axially inside the porous medium. The flume is marshaled above and conducted to the circular channel for heat exchange with the mine ventilation gas. Through parallel installation of the combustion units, the real time control of the operational number of combustor based on the mine ventilation gas flux, the control of steam flux and electrical heating components in the high temperature heat pipe based on the temperature of the combusting area, this invention meets the requirement of mine ventilation gas processing on the flux and concentration, and ensures the stable operation of the devices.

The invention discloses a method for optimizing the magnetic suspension permanent magnet planar motor magnetic steel array parameter. An average fundamental wave amplitude is used for setting the expected gas flux density, and a mathematic model of the expected gas flux density is set up; average fundamental wave amplitudes on different levels are used for calculating the expected flux density overall average fundamental wave amplitude in an effective magnetic field space height range, and a gas flux density harmonic model is used for calculating the average relative mean square error of the practical flux density and the expected gas flux density; the magnetic steel parameter is determined based on the principle that the expected flux density overall average fundamental wave amplitude should be as large as possible, and the average relative mean square error of the practical flux density should be as small as possible, an optimizing result can effectively restrain higher harmonics, and especially, second harmonics are restrained greatly.