52 results about "Phase density" patented technology

The invention relates to a method for accurately measuring absorbed phase density of methane on shale. The method comprises the following steps: 1) smashing a piece of shale sample to be 60-80 meshes, and dividing the powder into two; 2) performing a volumetric method isothermal adsorption experiment on the first shale sample, and obtaining a calculation model of the amount n, adsorbing CH4, of the adsorbed state methane substance; 3) performing a weight method isothermal adsorption experiment on the second shale sample, and obtaining a calculation model of the mass m, adsorbing CH4, of the adsorbed state methane; 4) performing adsorbed phase volume correction on the calculation model of the amount n, adsorbing CH4, of the adsorbed state methane substance, obtained in the step 2) and the calculation model of the mass m, adsorbing CH4, of the adsorbed state methane, obtained in the step 3), so as to obtain the corrected substance amount calculation model and the corrected mass calculation model of the adsorbed state methane; 5) according to a definition formula of the amount of substance, combining with the two calculation models in the step 4), and determining the mass m, adsorbing CH4, and the volume V adsorption of the adsorbed state methane; 6) according to the definition of the density, determining an exact adsorption value of the adsorbed phase density rho of methane on the shale.

The invention provides a method for accurately calculating the real adsorption quantity of methane on shale. The method comprises the following steps: crushing muddy shale samples; drying in a thermostat; obtaining the change data of quality of the muddy shale samples along the gas pressure, and calculating the initial volume and quality of samples and a sample cylinder; calculating the excessive adsorption quantity of the samples under different pressures; making a plot of the quality and gas density of measured samples at high-pressure section in a rectangular Cartesian coordinate system, and fitting to obtain an analytic expression, requiring fitting R<2>=1; calculating the saturated adsorption quality and saturated adsorption phase volume of the samples, wherein the ratio of the two is density value of an adsorption phase; and correcting the excessive adsorption quantity of saturated adsorption points on an absolute line through the adsorption phase volume, and correcting the excessive adsorption quantity on front other points through adsorption phase density, thus obtaining the true adsorption quantity of methane on shale.

The invention discloses a phase error correction method for an out-of-focus phenomenon of a fringe projection three-dimensional measuring system. The method comprises: a computer generates a phase-shifted fringe image and the image is collected by a camera; for the collected image, a background image I' and a phase phi' containing an error are calculated and edge extraction is carried out on the background image I'; a point spread function (PSF) of each edge pixel is calculated after edge map obtaining; a phase gradient direction and a phase density of each to-be-processed pixel are calculatedby using gradient filtering and neighborhood averaging methods in the phase map phi'; and then for the to-be-processed pixels, phase errors delta phi caused by the out of focus of the camera are calculated pixel by pixel, so that a finally corrected phase phi is obtained and the phi meets a formula: phi=phi'-delta phi. The corrected phase information can be converted into three-dimensional information of a to-be-measured object by a phase-height mapping relationship.

The invention relates to a preparation method of a high-solid-content butadiene-styrene latex for a latex product, and provides a preparation method of a high-solid-content butadiene-styrene latex. The method comprises the following procedures: by taking butadiene and styrene as main monomers, using composite emulsifier which at least contains one surfactant containing potassium or sodium carboxylate groups, and taking small-molecule organic ammonium polycarboxylate as agglomerant and alkali metal inorganic salt as water-phase density regulator, polymerizing, removing the residual monomers, agglomerating, centrifuging, and thickening to obtain 60-65% high-solid-content butadiene-styrene latex. The preparation method of a high-solid-content butadiene-styrene latex, provided by the invention, is simple, feasible, economic, friendly to environment and high in production efficiency; and the high-solid-content butadiene-styrene latex prepared by the method can meet the requirements for production processing and service performance of products such as latex mattresses, foamed carpets and the like.

The invention discloses a method for measuring the adsorption phase density of adsorbate gas on adsorbate. The method includes the steps: 1) measuring the excess adsorption quantity and the body phase density of the adsorbate gas under at least three different types of pressure; 2) acquiring adsorbed phase volume according to a corrected isothermal adsorption model and the excess adsorption quantity and the body phase density measured in the step 1); 3) acquiring the absolute adsorption quantity of the adsorbate gas on the adsorbate according to the corrected isothermal adsorption model and an isothermal adsorption model; 4) acquiring the adsorbed phase density of the adsorbate gas on the adsorbate according to a formula (1), and denoting the adsorbed phase density as rho adsorption phase with the unit g/cm<3>. The method is directly implemented based on original isothermal adsorption test data, simple, practicable and easy to popularize. According to research of adsorption behaviors by molecular simulation, assumed conditions of the method are more reasonable, and reasonableness is obviously superior to that of a traditional optimization scheme.

The two-phase gas-liquid flow capacitive sensor includes flange, protecting plate, capacitive plate, connecting pipe, plate pipe, shielding hood and stray capacitance filter circuit. The flanges are fixed to ends of connecting pipe, the plate and the shielding hood are fixed between two flanges, the capacitive plate is set outside the plate pipe, the protecting plate is set outside and the capacitive plate and the shielding hood are connected with lead separately. The protecting plate and the capacitive plate are in some optimal length, the angle of the arced pole plate is 120-140 deg and the radius of the shielding hood is in its optimal value. The present invention has simple structure, low cost, long life, high sensitivity and capacity of measuring flow rate, phase density and sliding ratio, and other advantages. The present invention is suitable for non-invasion measurement of two -phase gas-liquid flow in oil pipeline.

The invention discloses a method for predicting density and particle size distribution of particles in a fluidized bed based on computational fluid mechanics. The method comprises the following steps: 1, building a basic flow reaction model in the fluidized bed; 2, building a mathematic model for describing the particle phase density and particle size change rule; and 3, predicting the density and particle size distribution states in the fluidized bed. According to the method, simulation study is carried out on the fluidized bed by a computational fluid mechanics method; real-time correction is carried out on the density and the particle sizes of the particles by combining the mathematic model for describing the particle phase density and particle size change rule, so that a theoretical basis is provided for accurate prediction of the density and particle size distribution states of the particles in the fluidized bed, and performance prediction, optimal control and design enlargement of the fluidized bed. According to the method, the density and particle size distribution states of the particles in the fluidized bed are obtained by the computational fluid mechanics method, and complicated sampling analysis on the actually running fluidized bed is not needed, so that a lot of manpower, material resources and time cost are reduced; and the method disclosed by the invention is a novel method for obtaining the density and particle size distribution states of the particles in the fluidized bed.

The invention discloses a method for calculating adsorption quantities of different aperture surfaces of a shale organic matter. The method comprises the steps of (1), constructing an interlayer structure of graphene by means of graphite for establishing an organic matter model, and introducing a methane configuration into the established organic matter model; (2), performing adsorption simulation, performing energy minimizing on a molecule system, and obtaining an initial stable configuration through adjusting an atom position change; (3), calculating the number of methane molecules which arefilled in the organic matter aperture, determining a preferable adsorption position, utilizing a COMPASS force field in a full calculating process, calculating an intermolecular van der Waals attractive force, and an electrostatic potential energy between the methane and a skeleton; (4), dividing nano-holes into K units in a direction which is parallel with a hole wall surface, performing statistics on the kinds and number of the atoms in each box, and calculating a fluid density average value; and (5), calculating a Gibbs adsorption quantity. The method of the invention realizes better fitting between adsorption phase density calculation and an actual condition, thereby realizing higher precision.

Methods for determining and validating a first phase fraction of a gravitationally-separated multiphase fluid by conducting physical and electrical property measurements on samples of the fluid. The water content of crude petroleum oil is determined after the oil and water have begun to separate into phase layers such as occurs during un-agitated holding of the crude petroleum oil. A series of measurements of electrical properties such as permittivity and physical properties such as density is collected. The density minima can be used to generate hindsight determinations of average properties, such as the dry oil phase density, which in turn can be used to increase the accuracy of the water percentage in the oil determined by the permittivity and density methods. Flow weighted averages of water percentages by each method can be used to determine and validate the water content of the crude petroleum oil.

The invention provides a preparation method for multi-scale precipitation of heterogeneous aluminum alloy bars. According to the preparation method, a plurality of pure aluminum and 7075 aluminum alloy metal bars with the same length are mixed and bound, and then undergo rotating forging plastic deformation and multi-pass high-strain rotary forging deformation, so that the interfaces of initial aluminum alloy fine bars are combined to prepare pure aluminum and 7075 aluminum alloy mixed bar blanks, then multi-scale precipitation heat treatment on the bars is carried out by utilizing different age hardening behaviors of the pure aluminum and the 7075 aluminum alloy, and the heterogeneous Al and 7075 aluminum alloy bars with multi-scale precipitation phase density are finally obtained.

The invention discloses a method for determining the adsorption phase density of adsorbate gas on an adsorbate. The method disclosed by the invention is used for determining the adsorption phase volume and the adsorption phase density from the point of view of an experiment, not for optimizing and gaining the parameters from the point of view of mathematical optimization. In the conventional optimization method, a certain assumption on the adsorption phase volume or adsorption phase density is required to be made or an assumption that the adsorption phase volume does not vary with temperature and pressure or the adsorption phase density does not vary with temperature and pressure is made. In the method disclosed by the invention, the assumption on the adsorption phase volume or adsorption phase density is not required to be made, and the adsorption phase volume and adsorption phase density are directly determined from the point of view of the experiment, therefore, results determined by adopting the method are more objective and reliable than those determined by adopting the optimization method.

The invention relates to a combined annular mist flow phase-splitting flow measuring method. The combined annular mist flow phase-splitting flow measuring method comprises the following steps: measuring an average liquid membrane thickness of an annular mist flow in real time by using two pairs of electric conductive annular wall-attached sensors; performing relevant analysis on signals measured by the two pairs of front and back annular electric conductive sensors according to a relevant speed measuring method to obtain an average liquid membrane interface flow rate, and solving a mass flow of a liquid membrane according to the average liquid membrane thickness and the liquid membrane interface flow rate; acquiring gaseous phase density by using a vortex sensor; obtaining a read gaseous phase flow through calculation; and using the measured liquid membrane flow, the read gaseous phase flow rate and the read gaseous phase flow as known quantities, performing the iterative solution on an entrainment rate E and a reading coefficient OR by using a formula until the entrainment rate is converged, and finally calculating a total liquid phase flow according to the entrainment rate, so that the measurement objective of the annular mist flow phase-splitting flow can be achieved.

A vibratory flow meter (100) for correcting for an entrained phase in a two-phase flow of a flow material is provided. The vibratory flow meter (100) includes a flow meter assembly (10) including a driver (104) and with the vibratory flow meter (100) being configured to generate a vibrational response for the flow material. The vibratory flow meter (100) further includes and meter electronics (20) coupled to the flow meter assembly (10) and receiving the vibrational response. The meter electronics (20) is configured to generate a measured two-phase density of the two-phase flow using the vibrational response, determine the computed drive power needed by a driver (104) of the flow meter assembly (10), and calculate a density compensation factor using a liquid density of a liquid component of the two-phase flow, an entrained phase density of an entrained phase component, the measured two-phase density, and the computed drive power.

The present invention is solution to edge effect of two-phase gas-liquid flow capacitive sensor. The two-phase gas-liquid flow capactitive sensor is provided with protecting pole plates of optimal length L. The increase of length results in decreased influence of the edge effect but increased volume of the sensor, and the angle of the arced pole plate is 120-140 deg. The protecting plate length L and the angle of the arced pole plate, as the main parameters, are obtained via 3D electromagnetic field equi-parameter finite element algorithm including the steps of: start, unit separating, dielectric constant setting, rigid matrix synthesis, solving coupled equations and capacitor integration. The method of the present invention has simple structure, low cost, long life, high sensitivity and capacity of measuring flow rate, phase density and sliding ratio, and other advantages. The present invention is suitable for non-invasion measurement of two-phase gas-liquid flow in oil pipeline.

The invention belongs to the technical field of chemical equipment and provides a mixed liquor continuous separation device. The device comprises a mixed liquor water diversion container (1), a mixed liquor inlet (2), a water diversion interface (3), an organic liquid overflow port (4), an aqueous phase overflow port (5), a thorough discharge port (6) and a venting port (7). With the water diversion interface (3) as the reference surface, the height of the organic liquid overflow port (4) is B, the height of the aqueous phase overflow port (5) is A, the height difference between the organic liquid overflow port (4) and the aqueous phase overflow port (5) is X=B-A, B*rho 1=A*rho 2, rho 1 represents organic phase density, and rho 2 represents aqueous phase density. By means of the density difference between two kinds of immiscible liquid, the positions of the organic liquid outflow port and the aqueous phase overflow port are reasonably designed, and automatic separation of the two kinds of immiscible liquid can be achieved through the equipment.

The invention discloses a mud shale supercritical methane isothermal adsorption model based on variable density. The method comprises the following steps of S1, determining an adsorption phase methanedensity change rule in an adsorption process; S2, determining an adsorption phase volume change rule in a methane isothermal adsorption process; S3, establishing a variable-density supercritical methane isothermal adsorption model nex=rhoabs*Va-rhog*Va=(rhof*ln(d*p-1)-rhog)*Va; S4, measuring isothermal adsorption data of a porous medium by means of a weight method or a capacity method, fitting the experiment data by means of the model, and obtaining the adsorption phase density, the absorption phase volume and the methane absolute absorption quantity at different pressure points. The mud shale supercritical methane isothermal adsorption model is suitable for fitting isothermal adsorption experiment data of supercritical methane of the porous mediums such as mud shale, and the model can realize more accurate fitting of the isothermal adsorption data. The mud shale supercritical methane isothermal adsorption model can accurately calculate the adsorption phase density change in an isothermal adsorption process and realizes more reasonable prediction for the adsorption phase volume and the absolute adsorption quantity.

A liquid jet is ejected out of a nozzle, the liquid comprising one or more components, the flow of one or more of said components, the active components, being separated such that the liquid that flows within a boundary layer thickness δ, of the nozzle wall is substantially comprised of a liquid without the active components, the continuous phase, and the said active components flow substantially outside said boundary layer where δ is defined by formula (I): where μ is the continuous phase viscosity in Pa·s, U is the jet velocity in m/s ρ is the continuous phase density in kg/m3 and x is the length of the nozzle in m in the direction of flow.

The invention relates to a phase interface measuring method. The method comprises the following steps: pressure liquid is pressed into a phase to be measured from an upper pressure opening and a lower pressure opening at the same flow, pressure of the pressure openings is measured, and phase interface height h (h=(deltaP-rho1*g*H)/(rho2-rho1)/g) is computed according to pressure difference deltaP between the upper pressure opening and the lower pressure opening, the height H of the upper pressure opening as well as upper phase density rho1 and lower phase density rho2 of two phases in the phase to be measured. In the measuring method, a common instrument can measure the phase interface height of highly corrosive media, which has the advantages of low cost, simple measuring method and wide application; and the measuring method can be used for measuring liquid level, the phase interface height between media with similar density and each phase interface height of a multi-phase mixture besides being especially suitable for measuring the phase interface height of the highly corrosive media.