137 results about "Separation principle" patented technology

A technique using a curved channel of a spiral device to introduce a centrifugal force upon neutrally buoyant particles flowing in a fluid, e.g. water, to facilitate improved separation of such particles from the fluid is provided. As these neutrally buoyant particles flow through the channel, a tubular pinch effect causes the particles to flow in a tubular band. The introduced centrifugal force perturbs the tubular band (e.g. forces the tubular band to flow in a manner offset from a center of the channel), resulting in an asymmetric inertial migration of the band toward the inner wall of the channel. This allows for focusing and compaction of suspended particulates into a narrow band for extraction. The separation principle contemplated herein implements a balance of the centrifugal and fluidic forces to achieve asymmetric inertial equilibrium near the inner sidewall.

The invention discloses an identity and access control and management system and method in a cloud environment. The system comprises an identity and access control and management system (IAM), a user terminal and an application server. For different application services, integrated identity authentication and unified user management follow an identity authentication and access control separation principle, and user identity and access control management is realized. On the respect of user identity information management, from generation to cancellation of the user identity, a registration service provides self-help service for the user; on the respect of user authentication, a double-factor authentication technology is used for realizing the bidirectional authentication of the user and an authentication server and issuing an authentication bill to realize one-time authentication and multi-time use; and on the respect of access control and management, the access authority of the user is managed based on a role access control strategy of a user group, and the server is authorized to issue an authorized bill to the user. By adopting the identity and access control and management system and method disclosed by the invention, the user is convenient to manage the identity information, multi-time authentication is avoided, the authentication security is enhanced, and the illegal access of unauthorized users is prevented.

The invention discloses a beneficiation method for low-grade mixed copper ore containing molybdenum. According to the properties and characteristics of the low-grade mixed copper ore containing molybdenum, the copper and molybdenum bulk floatation and re-separation principle technological process is adopted, and high-efficiency concentration of minerals is achieved by using a combination of butyl xanthate and a high-efficiency collector M201 during copper and molybdenum bulk floatation operation; high-efficiency reagent removal of bulk concentrates is achieved through a concentration dewatering and fine grinding method during copper and molybdenum separation operation so that the impact of a large number of reagents existing in copper-lead bulk concentrates on copper and molybdenum separation can be reduced; and moreover, copper minerals are suppressed by means of suppressant F-6, so that separation of copper and molybdenum is effectively realized, and the copper content and molybdenum content of the concentrates are effectively reduced. Meanwhile, in order to stabilize the floatation indexes, the floatation process is optimized for site production, namely, branching and streaming floatation; accordingly, the purpose of comprehensive recovery and utilization of mineral resources is achieved.

The invention provides a denoising method for increasing the signal to noise ratio of seismic data, and belongs to the field of geophysical prospecting for petroleum. The data partitioning technique and the wave field separation technique are combined to suppress stochastic noise so as to increase the signal to noise ratio of seismic data. The method includes: partitioning the seismic data, subjecting each data block to complex field SVD (singular value decomposition) filtering, using the wave field separation technique for decomposition of characteristic values, using optimized characteristic values for data reconstruction, and replacing original frequency slices to realize suppression of the stochastic noise. Compared with the conventional SVD technique which assumes horizontal lineups, the method has the advantages that any relative time difference correction for the lineups is not needed, and denoising effects are stable. By means of the partitioning technique, unsteady state of inclination angle variation in actual seismic data can be overcome effectively, and time occupied by SVD and reconstruction is greatly shortened.

The invention belongs to the field of an electric system, and specifically relates to a method for suppressing large-scale photovoltaic power station power system low-frequency oscillation by utilizing an active-disturbance-rejection additional damping controller to adjust active output of a photovoltaic system. The method, taking a large-scale photovoltaic power station as an object of study, designs a photovoltaic power station active additional damping control strategy with active disturbance rejection control and MPPT control being combined, and designs and sets an active disturbance rejection controller through a separation principle; the angular velocity of a synchronous generator serves as the input of the active disturbance rejection controller; and the output signal of the controller is added to a constant power control outer ring after amplitude limiting, thereby achieving an effect of suppressing the power system low-frequency oscillation. The method has a good control effect for single-machine and multi-machine power system low-frequency oscillation; and the controller has high robustness.

The present invention discloses a safety operation control method of urban drainage networks. At present, urban drainage network system in our country is difficult to directly measure state information in a pipeline such as water flow, water level, water pressure, flow velocity and the like, a long delay from control input to water flow state changing is required so as to bring great difficulty for safety operation control of preventing a drainage pipeline from overflow, and therefore, an efficient and timely safety operation control method is lacked at present. A delay compensation proportional integral observer is employed to perform estimation and reconstruction of the water flow state of the drainage pipeline, a feedback control design based on the observer is performed, and methods such as the separation principle and the Lambert W function are employed to respectively perform gain solution of the observer and a controller. The safety operation control method of the urban drainage networks solves the difficulty of safety operation control for preventing urban drainage pipeline from overflowing, satisfies the accuracy and timeliness requirement of actual safety operation control and facilitates safe and reliable operation of a modern urban drainage network system.

The invention provides a printing method for fabrics. The method comprises the following steps of: carrying out color separation on printed patterns so as to obtain cyan, magenta, yellow, light black, light cyan, light red, sapphire and black patterns in the printed patterns; respectively carrying out screening and plate-making according to the patterns in each color so as to obtain a pattern plate corresponding to the patterns in each color; respectively preparing a color paste according to the patterns in each color so as to obtain a color paste corresponding to the patterns in each color; and carrying out pretreatment on fabrics, then sequentially carrying out superimposed printing on the fabrics by using corresponding pattern plates and color pastes, and carrying out ageing on the fabrics so as to obtain printed fabrics printed with the printed patterns. According to the invention, through combining with a principle of digital printers on the basis of a four-color separation principle, the operation of printing is performed by using an eight-color separation process, and through the adjustment on a drawing technique and a printing process, printing products are exquisite in effect, rich in color, and natural in transition.

The invention discloses a charge-induced sulphophile expanded adsorbent bed medium with hydrophobic nature and a preparation method thereof. In the composition of the medium, matrix is a composite microsphere with fibrin/inorganic weighting agent, petunidin is sulfonyl group and mercapto benzimidazole. The composite microsphere with fibrin/inorganic weighting agent is acquired by inverse suspension thermal regeneration and is taken as the matrix to mix divinyl sulfone, soda buffer solution and DMSO for activation, then swab-off active matrix, the mercapto benzimidazole and sodium hydroxide containing ammonium persulfate are mixed for coupling, thus acquiring the charge-induced sulphophile expanded adsorbent bed medium with the hydrophobic nature. The expanded bed adsorbing medium developed by the invention combines with three protein separation principles of hydrophobic charge induced chromatography, thiophilic chromatography and expanded bed adsorption, etc., which has the advantages of large density of the petunidin, large protein adsorption capacity, strong specificity, mild conditions of adsorption and elution, etc., and shows the characteristic of the integration of technology and process, thus being used for high efficient separation and purification of proteins such as antibody, etc.

The invention discloses an integrated Venturi air washing device. The device comprises two communicated barrels, wherein one barrel is a washing tower in which waste gas can be subjected to pre-washing treatment such as cooling and humidifying, and washing liquid can be injected and fully mixed with flue gas; the other barrel is a separation tower which mainly finishes gas-liquid separation; and the two barrels are connected into a whole through a communicating pipe. After being pretreated, the waste gas is washed and separated by using a Venturi effect and the cyclone separation principle. The Venturi air washing device is small in size, can be flexibly arranged, is easy to manufacture, is flexibly regulated, and can be suitable for large flue gas treatment, small workshop air purification and the like.

The invention relates to a method for preparing ceramic hollow microspheres by using a peristaltic pump assisted coaxial micro-fluidic system. The method comprises the following three steps: preparing precursor slurry, preparing a precursor and sintering. The dropping ceramic hollow microspheres precursor liquid drops are collected by utilizing a non-solvent induced phase separation principle, so that the outer surfaces of the dropping liquid drops are separated and cured, deformation and refusion of the liquid drops are effectively avoided, and the ceramic hollow microsphere precursor is obtained. The precursor is subjected to room-temperature drying and Muffle furnace sintering, and finally the ceramic hollow microspheres are obtained. Compared with the prior art, the ceramic hollow microspheres prepared by the invention are good in sphericity degree and controllable in sphere size and porosity, lots of energy and acid-base reagents do not need to be consumed, the process is simple and easy, and large-scale industrial production is easily realized.

The invention relates to an airflow classifying and airflow drying process for coking coal. In the process, coke oven flue waste gas is taken as a drying medium, the fluidization technology is adopted for drying the coal, and simultaneously the coal is classified into several classes according to particle sizes by an airflow separation principle. A device consists of a vibrating fluidized bed main body and a classifying collection device, wherein the vibrating fluidized bed main body comprises a primary air supply device, a vibrating main box body with an air distributing plate, a sedimentation classifying section and a drying section with a secondary air inlet; and the classifying collection device completes the final collection of small-particle materials through a group of dust collection devices or several groups of duct collection devices with different structures according to different requirements of the process on the classification of the particle sizes. The airflow classifying and airflow drying process has the advantages that: energy is saved, the wastewater generated in the coking process is reduced, the environmental pollution is lightened and the production capacity of the coke oven can be improved.

The invention belongs to the field of thermal power generation equipment and discloses a power station boiler combustor based on pulverized coal classified pre-burning-pyrolysis. The combustor is composed of a main combustor, an air supply pipe, a pre-burning chamber, a pyrolysis chamber and a pyrolysis gas nozzle. An elbow at the tail portion of the air supply pipe and a separating baffle divide the air supply pipe into a sparse pulverized coal pipe and a thick pulverized coal pipe which are respectively connected with the pre-burning chamber and the pyrolysis chamber. The pre-burning chamber and the pyrolysis chamber are in series connection. The pyrolysis gas nozzle is located at an outlet of the pyrolysis chamber. Pyrolysis products are divided into thick pulverized coal pyrolysis gas and sparse pulverized coal pyrolysis gas through a sparseness and thickness separation principle. The power station boiler combustor based on the pulverized coal classified pre-burning-pyrolysis is designed on the basis of an existing turbulent combustor. Classified pre-burning-pyrolysis is conducted on mixture of air and pulverized coal, the mixture is taken from an elbow at an inlet, heat and low oxygen environment required by pyrolysis are provided by a self pre-burning reaction, and therefore a structure and a system are simple, operation is stable, safety performance is good and operation benefit is high. The power station boiler combustor has obvious effect on stable combustion of a coal-fired power station boiler in low load operation.

The invention discloses a paint discharge printing technology with a digital printing effect. The technology comprises the following steps: (a) pre-treating the gray cloth; (b) carrying out ground color dyeing by adopting a dischargeable active dye; (c) drawing through a discharge print technology by adopting an 80%-color color separation drawing soft, manufacturing a net with a silk screen with a size of 100 to 200 mesh; (d) adopting discharge printing protoplasm, adding paint into the protoplasm, evenly mixing, then adding discharge printing powder, modulating discharge printing mill base, on the basis of the four color separation principle, further separating four colors into two sets of colors with different shades, namely 8 sets of colors, wherein one more set, namely discharge printing white slurry is also included, carrying out a printing treatment with printing equipment after the slurry mixing process; (e) baking the processed gray cloth for 3 to 5 minutes at the temperature of 150 to 160 DEG C after the printing process; (f) cleaning the cloth with clean water once with a water washing machine, carrying out a centrifugation treatment so as to remove the water, then carrying out a softening and shaping treatment, and finally rolling the finished product for transportation. The paint discharge printing technology is capable of rapidly producing discharge printing crafts with a digital printing effect, and the products produced by the technology are not easy to duplicate and counterfeit in the market.

The invention relates to an optimization control method, in particular, a non-strategy observer state feedback-based optimization control method. With the optimization control method adopted, the control performance of a linear discrete system with unknown parameters can be optimized. According to the method, a discrete linear augmentation system which is provided with a state observer and has unknown parameters in a system matrix is constructed, and performance optimization indexes are defined; on the basis of a separation principle, dynamic programming and a learning method, a non-strategy learning algorithm with unknown model parameters is presented, and an approximate optimal observer is designed, and an approximate optimal controller is designed, and therefore, a non-strategy learningalgorithm that fully utilizes measurable system output and control input data can be obtained; and an observer state feedback-based system optimization control strategy is realized. The method of theinvention does not require all system model parameters to be known, does not require system state parameters to be directly measurable, and can utilize measurable data to achieve the optimization ofspecified performance indexes.

A whirlpool separator is composed of a casing and a drive shaft, wherein the casing is internally provided with a casing cavity and the drive shaft; the casing cavity is internally provided with a whirlpool wheel connected with the drive shaft; the whirlpool wheel is internally provided with a whirlpool chamber the middle of which is provided with a whirlpool chamber inlet, and the periphery of the whirlpool chamber is provided with a whirlpool chamber outlet; and the casing cavity is provided with a casing cavity inlet arranged corresponding to the whirlpool chamber inlet, and the casing cavity is provided with a casing cavity outlet. The whirlpool separator in the invention adopts a brand new separation principle and a method, makes full use of circular motion and fluid motion, and utilizes a whirlpool the rotation speed of which increases from the periphery to the center progressively to separate the fluid therein. The invention can be widely applicable to the fields of sewage treatment, refuse treatment, oredressing, sea water desalination, ocean chemical industry, hydrogen production, oxygen production, nano material manufacture, carbon dioxide decomposition, harmful gas decomposition, air conditioning, refrigeration, reactor, oil refining, air purification, dust abatement, dust absorption and the like, can provide inexhaustible clean energy, can thoroughly solve the energy problem and leads to industrial revolution in various industries.

The invention discloses a piston type axial flow pressure regulator which mainly comprises an axial flow regulation valve, a pressure regulation controller and a group of signal tubes connected with the pressure regulation controller and has the remarkable structure characteristics that separate flow passage, throttling and depressurizing functional component and guide mechanism functional component are designed in the axial flow regulation valve according to the separation principle. A cylinder sleeve is embedded between a valve seat and a valve sleeve to form an annular flow channel, and a piston is matched in the cylinder sleeve in a sliding manner to carry out pressure regulation and stabilization operation, so that the piston is guaranteed to be applied by the pushing and pulling action force in the axial direction only when sliding in the cylinder sleeve, the defects of large flow resistance, large vibration and high noise as the a turbulent flow is easily generated due to a meander flow passage with lower inlet and upper outlet of the traditional regulation valve are well overcome, and the technical effects of further improving the pressure regulation accuracy and pressure regulation stability are very obvious. The piston type axial flow pressure regulator has the outstanding advantages of simple and rapid structure, liability in production, low manufacturing cost, high pressure regulation accuracy, good stability of output pressure, safety and reliability in running and long service life and has very good popularization and application prospect.

The invention discloses a method for separating an eggshell membrane from an eggshell. The separation principle of the method is characterized in that a separation agent hydrochloric acid is added to a raw material eggshell, and the eggshell is immersed in a heat insulation mode to make lime and keratins undergo a chemical change and reduce the combination force between the eggshell and the eggshell membrane, so the membrane can be separated from the eggshell under continuous stirring. The separation method provided by the invention has the advantages of simplicity, practicality, and high eggshell membrane recovery rate; and the separated eggshell membrane can be used as a raw material for natural cosmetics, and enables face skins to become tender and smooth.

The invention relates to a separating and cleaning device for recovered residual plastic films. The separating and cleaning device is characterized in that the separating and cleaning device comprises a cleaning device, a film collecting device and a stalk collecting device; the separating and collecting device separates the residual plastic films from cotton stalks by utilization of solid-liquid two-phase separation principles; the separating and collecting device can separate the residual plastic films from the cotton stalks by utilization of the solid-liquid two-phase separation principles and can clean the residual plastic films; and reutilization after recovery of the residual plastic films is achieved. The separating and cleaning device is provided with two rows of staggered spraying heads with a certain angle. Strike of bubbles sprayed by the spraying heads and gas produced by explosive eruption allow water to surge, so that soil grains attached to the residual plastic films are washed out rapidly and the cleaning efficiency of the residual plastic films is high. The film collecting device and the stalk collecting device are respectively provided with grid plates. The grid plates are evenly distributed on rotary shafts and are arc-shaped, so that film collection and stalk collection are rapid and convenient. The separating and cleaning device is reasonable in layout, low in cost, convenient in operation, high in working efficiency, reduced in waste of labor, convenient to move and not limited to places.

The invention discloses a dynamic positioning ship control method based on a T-S fuzzy system. The method comprises the steps that (1) dynamic positioning system modeling of T-S fuzzy form is carriedout, wherein a dynamic positioning ship mathematical model comprises ship kinematics and dynamics models; (2) a T-S fuzzy observer is designed to estimate the state quantity and unknown disturbance ofa system; and (3) an observer-based controller is designed, and a state feedback controller is designed based on the estimated state quantity of the observer. According to the invention, the application scope of the separation principle of the T-S fuzzy observer-controller is extended; a new separation principle condition is studied; and the system stability is ensured.

The invention relates to a process for removing polyaromatic hydrocarbon pollutants from camellia oil. The process is technically characterized in that the process is implemented by applying a supercritical carbon dioxide extraction and separation principle and utilizing the characteristic that supercritical carbon dioxide has special camellia seed dissolving function, namely, the process is implemented by controlling the pressure and temperature of carbon dioxide adopting a special device to affect the supercritical dissolving capacity of carbon dioxide. Because the process omits the blank preparation procedure and key polyaromatic hydrocarbon generation procedure of the traditional oil hot press process, the polyaromatic hydrocarbon supercritical carbon dioxide in the camellia oil can be controlled effectively. By adopting the method, the content of polyaromatic hydrocarbons in the camellia oil can be controlled in the range stipulated by a commission regulation (EU) No 835/2011. The method can be widely used for large, medium and small-sized camellia oil producing and processing enterprises to produce camellia oil.

The invention discloses a cutting-type tea-picking machine, which comprises a tea-picking machine body, an outer casing is arranged on the outside of the tea-picking machine body, a rotating impeller is fixedly connected to the rotating shaft, and a tea-picking blade is arranged on the bottom of the rotating impeller, and the top of the driving motor A left-hand handle is provided, a tea stalk settling chamber is set on one side of the tea picking machine body, a tea stalk collection bag is arranged at the bottom of the tea stalk settling chamber, a tea settling chamber is set on one side of the tea stalk settling chamber, and a tea stalk settling chamber is arranged at the bottom of the tea stalk settling chamber. A tea collection bag is arranged, and a fan is arranged on one side of the tea settling chamber. The present invention adopts the principle of gravity sedimentation separation, under the same initial speed condition, the heavier tea stems have a shorter lateral movement distance, while the lighter tea leaves have a longer lateral movement distance, so as to realize the separation of tea stems and tea leaves, and this free movement The method does not cause mechanical damage to the tea leaves and produces broken leaves, does not require artificial separation, improves productivity, and improves the quality of tea leaves.