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139 results about "Lateral line" patented technology

The lateral line, also called lateral line system (LLS) or lateral line organ (LLO), is a system of sense organs found in aquatic vertebrates, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells, known as hair cells, which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Lateral lines serve an important role in schooling behavior, predation, and orientation. Fish can use their lateral line system to follow the vortices produced by fleeing prey. Lateral lines are usually visible as faint lines of pores running lengthwise down each side, from the vicinity of the gill covers to the base of the tail. In some species, the receptive organs of the lateral line have been modified to function as electroreceptors, which are organs used to detect electrical impulses, and as such, these systems remain closely linked. Most amphibian larvae and some fully aquatic adult amphibians possess mechanosensitive systems comparable to the lateral line.

Solid-state image pickup apparatus

It is intended to obtain a high quality image which is not affected by the fluctuation of dark outputs, and pixels having a specifically large dark output, called defects, and has no lateral line etc. A solid-state image pickup apparatus including: an aperture pixel region which accumulates and outputs the electric charges generated depending on incident light; a light shielded optical black region; a black reference pixel region in which no impurity region for accumulating electric charges is formed; and level shifting means which shifts the reference level of the output signals of the black reference pixel region with respect to the reference levels of the output signals of the aperture pixel region and the optical black region, is provided.
Owner:CANON KK

Light emission device and manufacturing method thereof

A light emission device is constituted of LED chips, a driver circuit, and a wiring pattern for connecting the individual LED chips to the driver circuit. The wiring pattern is formed by weaving line members into a cross grid, the line member being formed by coating an electro conductive core with an isolating material. The lateral line members are connected to a negative electrode of the driver circuit, while the longitudinal line members are connected to a positive electrode of the driver circuit. Connectors are formed at cross points between the line members Negative poles of the LED chips are connected to the connectors that are formed on the lateral line members, while positive poles of the LED chips are connected to the connectors that are formed on the longitudinal line members. The wiring pattern is affixed to a heat sink through an adhesive agent.
Owner:FUJIFILM HLDG CORP

Underwater bionic lateral line sensing array

ActiveCN108362334AAvoid being affected by the surrounding large flow field environmentAccurate measurementHydrodynamic testingTransducerWater flow
An underwater bionic lateral line sensing array includes a bionic lateral line array structural body, runner water holes, an inner channel and a plurality of water current and water pressure compositesensors, wherein each water pressure composite sensor includes cilia made of electric reactive polymer smart material, a pressure transducer, electrodes and a pedestal. The bionic lateral line arraystructural body is therein provided with the inner channel in the length direction. The water current and water pressure composite sensors are arranged in the inner channel. The runner water holes communicating with the inner channel are arranged in one side of the bionic lateral line array structural body. The pedestals are arranged in the inner channel. Four electrodes are arranged on each pedestal. Each pedestal is provided with the cilia made of electric reactive polymer smart material and the pressure transducer is arranged on the pedestal. The underwater bionic lateral line sensing arrayhas a fish lateral line simulating system and senses water current and water pressure change at the same time, is high in anti-interference capability, high in sensibility and precision, and can provide measurement basis for accurate sensing of water environment change in the surrounding of a lateral line system.
Owner:XI AN JIAOTONG UNIV

Multifunctional AUV based on bionic lateral line

The invention discloses a multifunctional AUV based on a bionic lateral line, sensors are welded on a PCB circuit board and embedded in a carrier casing, a front head cabin, a main body cabin and a tail part are in streamlined head-tail sequential connection, sensor holes showing as the bionic lateral line are evenly distributed on the front head cabin and the main body cabin, the rear ends of both sides of the main body cabin are provided with steering engines, the end parts of the steering engines are connected with propellers, the end parts, far away from the front head cabin, of the propellers are provided with guiding covers, the terminal end of the main body cabin is provided with the tail part, and the tail part is a streamlined fish tail structure. Pressure data is obtained by the sensors which are arranged like the bionic lateral line, and during velocity measurement, a carrier directly faces the flow direction, and can correctly estimate local velocity. The AUV can determine direction and a path of a vibration source by sensing pressure gradients and changes so as to realize underwater positioning or obstacle avoidance. The multifunctional AUV has the advantages of small size and low cost, improves efficiency of identification and intelligentization of underwater equipment, and provides theoretical and data support for flow velocity measurement, underwater positioning and obstacle avoidance.
Owner:OCEAN UNIV OF CHINA +1

Artificial lateral line pressure detection method

The invention provides an artificial lateral line pressure detection method which comprises the following steps: step 10, selecting a streamlined underwater robot, and determining the pressure trace of the underwater robot by a simulation mode; step 20, arraying pressure sensors along the pressure trace and around an axial line; step 30, putting the underwater robot in different water flow states, acquiring the pressure data of the current state by utilizing each pressure sensor, and uploading the pressure data to an analysis center; step 40, using the analysis center to import the pressure data into a neural network identification tool, and training to obtain a neural network model with an identification ability; and step 50, importing the acquired underwater data into the neural network model so that the flow field / motion state of the position can be determined. According to the invention, a set of artificial lateral line system is developed by utilizing the MEMS technology, and machine learning is carried out through the pressure data acquired by the sensors in the system, thereby realizing development of the ability of the underwater robot for environment identification.
Owner:OCEAN UNIV OF CHINA

Slaughtering method comprehensively utilizing giant salamander resources

The invention discloses a slaughtering method comprehensively utilizing giant salamander resources. A giant salamander is subjected to electric shock anesthetization after being temporarily cultured and cleaned, then white mucus on the body surface of the grown giant salamander is lightly scraped by a stainless steel spoon and the mucus is collected in a preservation box and is cryopreserved at the temperature of minus 20 DEG C; after collection of the mucus is finished, the processed giant salamander is soaked and washed with vinegar solution to remove residual mucus colloid, the washed giant salamander is placed on a slaughtering table, the head of the giant salamander is pressed, the head and the trunk are directly cut off and the slaughtered giant salamander is hung upside down to carry out bloodletting; after bloodletting, cutting is carried out, wherein the cutting operation comprises the following steps: (a) cutting off limbs; (b) ripping along the medioventral line to take out internal organs and peeling off livers; (c) flushing the giant salamander with salt water; (d) peeling off the skin; (e) taking out the lateral line and grease of the tail of the giant salamander; (f) separating out spine and coccyx; (g) cutting into meat slices and finally carrying out sterilization, deodorization, packaging and cryopreservation. The slaughtering method disclosed by the invention can sufficiently show edible and medicinal value of each part of the giant salamander.
Owner:CHONGQING KUIXU BIOLOGICAL SCI & TECH

Space curved surface reconstruction method based on boundary constraint

InactiveCN103500468AQuick displayTroubleshoot Horizontal Resurfacing Issues3D modellingTerrainHorizon
The invention discloses a space curved surface reconstruction method based on a boundary constraint. The space curved surface reconstruction method based on the boundary constraint mainly comprises the steps of (1) collecting original horizon data points and fault data points, and drawing a hanging wall polygon and a heading wall polygon; (2) obtaining height attributes, relation attributes and projection attributes of the original horizon data points and points on the fault polygons; (3) carrying out connection on the original horizon data points and the points of the fault polygons through triangle gridding with the constraint; (4) accomplishing splicing of internal areas and external areas of the hanging wall polygon and the heading wall polygon, namely, accomplishing reconstruction of a three-dimensional space curved surface. The space curved surface reconstruction method based on the boundary constraint solves the problem of reconstruction of the horizon curved surface of the complex terrain in the process of three-dimensional geologic modeling, provides a new idea for isoline drawing, geological block forming and the like, can be applicable to various discrete points or lateral line data, and low in requirement for data, can support various faults such as complex terrain structures such as normal faults, reverse faults and vertical faults, and has good adaptability.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Device processing a table image, a memory medium storing a processing program, and a table management processing method

A table image processing device processes a table image and a memory medium stores a processing program. The table image processing device processes precisely a table image containing a round corner and includes a device extracting a line extracting a longitudinal line and lateral line out of an input image, a device finding a potential match of a round corner region extracting an oblique line which commences from a terminal of a line found by the line extracting device, and finding the potential match of the round corner region, a device extracting a cell containing the potential match of the round corner found by the potential match of the round corner region finding device, and a device deciding the round corner part deciding the round corner from the cells found by the device extracting the cells.
Owner:FUJITSU LTD

Rectifying tower flow controllable type lateral-line extraction combined device

The invention relates to a rectifying tower flow controllable type lateral-line extraction combined device, which is mainly used for the precisely controlled extraction process of gas phase lateral-line products in the rectifying tower. The rectifying tower flow controllable type lateral-line extraction combined device comprises a liquid collecting device, an inserted type condenser, a condensate collecting groove and a demister, wherein the principle of the device is as follows: the liquid and gas are reasonably divided, the phenomenon that the rising gas phase contains the liquid is avoided, and then the rising gas phase is partially condensed into liquid phase by the inner inserted type heat exchange device and is partially laterally extracted. By using the device, the difficulties that the flow is difficult to measure and control when the gas phase lateral-line extraction is performed in the rectifying tower are overcome, and at the same time, the gas phase partially condensation is equivalent to adding a layer of theoretical plate. The device has compact structure, is suitable for the rectifying tower which requires laterally extracting high-purity products in stripping section, and is in particular suitable for the separation process for high vacuum heat-sensitive materials.
Owner:NANJING UNIV

Combination blower, edger and trimmer and method for tending vegetation

A combined edger, trimmer and blower generally referred to as a lawn care apparatus for tending vegetation. More particularly, a novel handlebar provides a power control handle to maintain a boom on a longitudinal line of symmetry from a fixed point to an upright motor assembly in response to a side control handle rotating and translating the boom from a gearbox to a tangential tool assembly in front of an operator on a lateral line of symmetry. The gearbox including one or more lateral hubs that quick couples the side control handle into either a right or left handed holding position when the fixed point is to the side of an operator. The gearbox further containing one or more orthogonal gears with one or more gear addendum cams to lock the tangential tool assembly into a vertical or horizontal operating position, that is, a narrow or wide operating framework.
Owner:HURLEY EDWARD P

Continuous purification method for crude acetonitrile

The invention provides a continuous purification method for crude acetonitrile. A lateral line condenser is arranged at a third rectifying tower, so that the heat energy of an acetonitrile final product can be adequately recovered, the load of a reboiler at the bottom of the third rectifying tower and the refrigerant quantity of an acetonitrile final product cooler can be effectively reduced, the energy consumption can be saved, and 500-600MJ of energy can be saved for each ton of the acetonitrile product; and distillate is returned from the top of the third rectifying tower, so that the accumulation of oxazole in a system can be reduced, the yield of the acetonitrile can be guaranteed as well, and the problem that the operation load of a first rectifying tower can be obviously increased since all the distillate on the top of the third rectifying tower returns to the first rectifying tower in the prior art can be improved. Furthermore, a corresponding pipeline for adding a polymerization inhibitor is increased on the conventional three-tower and one-kettle refining technology, so that the problem that the exposed devices are easy to polymerize in the existing acetonitrile purification process in China can be solved, and the continuous purification method has the advantages of being high in industrial application value, and high in acetonitrile final product purity.
Owner:CHINA TIANCHEN ENG +3

Method and apparatus for controlling drainage and irrigation of fields

A method of and apparatus for controlling drainage / irrigation of a field includes laying out a network of drainage tiles, which typically may include a main line and a number of lateral lines, extending from higher elevations to lower elevations and exiting through a manually controlled main valve to a drainage ditch.A series of level-responsive valves are incorporated in the main and lateral lines at selected elevations. Each level-responsive valve is normally open until the ambient water level reaches a predetermined level relative to the valve. When the manual valve is closed and a certain level of water is reached adjacent a level-responsive valve, it causes that level-responsive valve to close, thereby cutting off drainage of higher elevations. When it is desired to retain water at higher elevations in a field, the manual valve is closed permitting water to accumulate and be retained at higher elevations by closing the level-responsive valves in sequence at progressively higher elevations as the level of retained water rises, thereby causing a cascading or “terracing” of water stored at upper levels. When the manual valve is opened, the field drains normally. The level-responsive valve may be a flotation valve. A modification of a flotation type level-responsive valve includes an overflow tube which permits excessive water at higher placement elevations to bypass the closed level-responsive valves, thereby permitting the field to drain under conditions of excess water into a standpipe at the manual valve.
Owner:FURRER BRIAN SCOTT

Method for reducing propylene concentration of dry gas in catalytic cracking device absorption stabilizing system

The invention discloses a method for lowering propylene concentration in dry gas of an absorption-stabilization system of a catalytic cracking unit, which achieves through improving supplement absorbent flow and heat exchanging process in the absorption-stabilization system. The method comprises the following steps: opening a lateral line on a third to a fifth theoretical plate of a stabilizer, producing light gasoline to be supplementing absorbing agent of an absorbing tower, simultaneously canceling the process of the original supplementing absorbing agent to get into the absorbing tower, increasing heat supply of a reboiler in the center of an absorption tower, or heating up deethanization gasoline with diesel oil. The method can obviously lower the concentration of propylene and propane in dry gas, which greatly improves propylene yield rate of the absorption-stabilization system of the catalytic cracking unit, and meanwhile, products are guaranteed, and energy consumption of a device is basically constant. The problem of inadequate heat load of the reboiler in the center of the absorption tower which is caused by flow process alternation is excellently solved through the optimization of the heat exchanging flow. In the whole process, flow reconstruction is simple and feasible, and economic benefit is obvious.
Owner:SOUTH CHINA UNIV OF TECH

Optical detection device for detection of multiple flaws

An optical detection device for detection of multiple flaws comprises a multi-shaft mechanical arm, wherein the multi-shaft mechanical arm respectively moves an object to be detected to first, second and third optical detection stations for performing respective detection. The first optical detection station comprises a first image scanning device and a first auxiliary lighting device for providing uniform light. The second optical detection station comprises a second image scanning device and a second auxiliary lighting device for providing parallel surface coaxial light. The third optical detection station comprises a wired scanning camera and a third auxiliary lighting device for providing lateral line collimating light. The multi-shaft mechanical arm respectively moves the object to be detected to the first, second and third optical detection stations, and rotates or turns over the object to be detected to detect one or more visible planes of the object to be detected, so as to detect all flaws which possibly occur on the surfaces of the object to be detected and are difficult to detect, thereby effectively improving detection rate of products with flaws.
Owner:UTECHZONE CO LTD

Laser guided parking apparatus and method

This abstract describes an apparatus and method for accurately parking a vehicle within an enclosed space such as a garage. The apparatus uses a compact diode laser and is mounted directly to a ceiling or to a device mounted to the ceiling such as a garage door opener unit. When mounted above the vehicle the bright red laser lines are projected from the laser downward and aligned onto a specific surface for the driver to see such as the top surface of a vehicle dashboard. These lines intersect each other forming an ‘X’ (or ‘cross’). This ‘X’ can be aligned with either an existing dashboard feature or with a ‘target’ which is adhered to the dashboard. When a vehicle enters into a garage the first projected laser line that the driver will see will be the longitudinal line. The longitudinal line enables the driver to adjust the vehicle to the right or left as the vehicle continues into the garage. The second projected laser line appears laterally as the driver pulls forward to a stop. When this lateral line and longitudinal line align with the target or other specific location on the dashboard, the driver stops the vehicle. At this point the driver has positioned his vehicle exactly where he wants it to be within the garage.
Owner:BUTLER III GEORGE +1

Adjacent underwater robot short-distance sensing method based on artificial lateral line systems

The invention provides an adjacent underwater robot short-distance sensing method based on artificial lateral line systems. The adjacent underwater robot short-distance sensing method comprises following steps: S1, a plurality of underwater robots are place at the right center of a low turbulence water tank in a front and back distribution manner; S2, an artificial lateral line system carried by a back underwater robot is used for measuring a pressure changing value of the surrounding flow field caused by swing of a front underwater robot; and S3, the back underwater robot is used for sensing the relative position relationship and the relative gesture relationship of the back underwater robot with the front underwater robot, and the moving state change of the front underwater robot based on the pressure changing value. The adjacent underwater robot short-distance sensing method based on artificial lateral line systems is used for sensing external water flow change via contact with the outside world, so that the adjacent underwater robot short-distance sensing method is capable of playing a role in the above complex environment steadily and effectively.
Owner:PEKING UNIV

Underwater bionic lateral line water pressure and water flow field information detection method based on neural network

ActiveCN108304810AAbility to realize target recognition and positioningImprove efficiencyCharacter and pattern recognitionNeural architecturesNerve networkGoal recognition
The invention discloses an underwater bionic lateral line water pressure and water flow field information detection method based on a neural network, and the method comprises the steps: collecting underwater pressure and water flow information through an MEMS sensor; building a database for the water pressure and flow data corresponding to the vibration sources at different positions; carrying outthe deep learning through a deep neural network, and training a vibration source position recognition model; finally achieving the recognition of different vibration source positions through the trained model, thereby achieving the target recognition positioning capability of an underwater robot, and providing a new thinking and solution for the marine detection of the civil and military robots.
Owner:XI AN JIAOTONG UNIV

A sonar target enhancement method based on a new image operator

The invention discloses a sonar target enhancement method of a new image operator, which solves the problem of target trajectory enhancement of a passive sonar azimuth history map. The invention provides a new image detection operator, which detects and processes the multi-frame data after beamforming, thereby realizing the reduction of background noise, the suppression of lateral lines and the extraction of target trajectory edges. Adaptive segmented equalization of the detected row data increases the local data contrast, increases the contrast between the target and background, obtains a larger processing gain, significantly enhances the target, and the azimuth history map is clear. The invention does not need to set any parameters, has good compatibility, small calculation amount, simple programming realization and the like, and can be used for the processing of the dynamic history diagram and the static two-dimensional image, and has wide application range.
Owner:THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP

Omnibearing direct current method

By using an omnibearing direct current method, a traditional exploration form, such as arranging an electrode apparatus on surfaces of the earth, can be changed; the electrode apparatus is entered into an infinite full space field from an infinite half space field; precision and extent of direct current method exploration can be substantially improved. The method is characterized in that: the apparatus is adjusted correspondingly in all dimensions according to reality and different exploration purposes; an electric field of an observation point is received obvious perturbation through electrode shift or lateral line arrangement; onsite exploration is performed through multiple orientation, multimode and multisystem; a resistivity value or a conductivity value is collected orderly and compared with each other; exploration data of the omnibearing system is analyzed synthetically so as to minimize multi-solution conclusions of direct current method data; a stereo exploration result which accords with stratum geology can be acquired through mutual authentication of many data.
Owner:林希仲 +1

Artificial propagation technology for Rhodeus sinensis

The invention relates to the field of Rhodeus sinensis propagation, in particular to an artificial propagation technology. The invention mainly relates to an artificial propagation technology for Rhodeus sinensis. The artificial propagation technology for the Rhodeus sinensis comprises infrastructure equipment, parent fish selection, parent fish temporary rearing, parent fish maturing acceleration, parent fish spawning, ovum pickup and incubation, wherein the parent fish maturing acceleration, the parent fish spawning, the ovum pickup and the incubation are the core of the artificial propagation technology for the Rhodeus sinensis. According to the artificial propagation technology for the Rhodeus sinensis provided by the invention, a square pond of 1 mu or a cement pit of 10-50m<2> is selected, and is equipped with micropores to enhance oxygen. Parent fishes are characterized in that lateral lines are incomplete, and the back upper place of each spiracle of each parent fish has shoulder patches. Male fishes are red in eye socket, and bright in body color; the abdomen of each female fish has a strip ovipositor. 4.5g / l of VC is added to temporary rearing water; before put, the parent fishes are soaked in 5mmg / l of potassium permanganate for 10 minutes; the density of the potassium permanganate is lower than 0.5kg / m<3>, and a toad of 50g is cultivated in every 4m<2> of water to prevent fungal diseases. 10g / kg of minced earthworm meat and spirulina powder is fed. The female-male ratio of the parent fishes is 1:1, oxytocic is injected after the parent fishes are narcotized by 30mg / lMS-222, the ovum pickup is performed by using Sinanodonta woodiana or unio douglasiae which is 8-10cm wide, and the ratio of the Sinanodonta woodiana or the unio douglasiae to the fishes is 2:3. The Sinanodonta woodiana or the unio douglasiae is harvested once every two days, the ovum-contained Sinanodonta woodiana or the ovum-contained unio douglasiae is moved to a hatching pond, and corresponding ovum-free Sinanodonta woodiana or corresponding ovum-free unio douglasiae is supplemented.
Owner:江苏畜牧兽医职业技术学院

Novel bionic lateral line sensor

The invention discloses a novel bionic lateral line sensor, which comprises a cilium housing, a cilium base rod, IPMC film sheets, extraction electrodes and a sensor housing. When an external flow acts on the free end of the cilium housing, the cilium housing generates mechanical deformation which can be transferred to the cilium base rod to cause deformation of the cilium base rod, deformation ofthe cilium base rod can lead to mechanical deformation of the IPMC film sheets, by using the IMC force electric effect, the IPMC film sheets can generate an induced voltage, and thus the magnitude ofthe external flow is calculated according to the collected induced voltage. The novel bionic lateral line sensor is adopted to be used for measuring the external flow, the cilium housing and cilium base rod are combined into one, the IPMC film sheets are used instead of strain gauges, and directly installed on the cilium base rod, the characteristics of integrated design, simple structure and convenient installation are achieved. Meanwhile, the novel bionic lateral line sensor can output the induced voltage accurately and obtain the flow velocity.
Owner:OCEAN UNIV OF CHINA

Next-door thermal coupling distillation method and equipment for producing polycrystalline silicon

InactiveCN102923714AAchieving Thermally Coupled DistillationReduce energy consumptionChemical industryHalogenated silanesReboilerDifferential pressure
The invention relates to a next-door thermal coupling distillation method and equipment for producing polycrystalline silicon. The equipment comprises a low-pressure next-door rectifying tower, a medium-pressure next-door rectifying tower, a high-pressure next-door rectifying tower, a top tower condenser and a tower kettle reboiler, condensation reboilers are arranged between the two rectifying towers, rear tower top gas phase materials release heat in the condensation reboilers and are condensed into cold fluids to return to a rear tower, and front tower kettle materials absorb heat in the condensation reboilers and return to a front tower after becoming reboiling vapor. Coarse trichlorosilane materials are separated though the three next-door rectifying towers successively, low-boiling-point substances are removed at tower tops, high-boiling-point substances are removed at tower bottoms, and high-purity trichlorosilane products are extracted on the lateral line of the high-pressure tower finally. Compared with traditional distillation processes, a next-door distillation technology and a differential-pressure thermal coupling technology can decrease energy consumption and equipment investment. The next-door thermal coupling distillation method and equipment for producing polycrystalline silicon utilizes the next-door distillation technology and the differential-pressure thermal coupling technology simultaneously, the production cost and the energy consumption are decreased greatly, and distillation energy is saved by about 70%.
Owner:TIANJIN UNIV

Maple syrup line system with increased diameter lines and fittings

A line system for a maple syrup production system, where the lateral lines have an inside diameter greater than 5 / 16″ nominal and less than or equal to ¾″ and the lateral line fitting and mainline fitting have a nominal inside diameter of greater than 0.225″ and less than or equal to 0.70″. Further, the line system has drop lines with an inside diameter greater than 5 / 16″ nominal and less than or equal to ¾″ and the spout fitting has a nominal inside diameter of greater than 0.225″ and less than or equal to 0.70″. The increased inside diameters of the drop lines, lateral lines, spout fittings, lateral line fittings and mainline fittings dramatically improves the flow of air and sap from the taphole and through the line system.
Owner:UNIVERSITY OF VERMONT

Apparatus and method for separating styrene from hydrocarbons mixture

The invention relates to an apparatus and a method for separating styrene from a hydrocarbons mixture. The apparatus comprises an extraction rectifying tower provided with a separation wall, a tower top condenser and a tower top product buffer tank communicated with discharging at tower top, a lateral line condenser and a lateral line product buffer tank communicated with discharging at lateral line, and a reboiler, the separation wall is positioned at central section of the rectifying tower along the axial direction, a top with a closure cap is connected with the side tower wall, the inner part of the extraction rectifying tower is divided into a common rectifying section (1), an extraction rectifying section (2), a common stripping section (4) and a solvent recovery section (3) in order, an inlet for mixing the hydrocarbons raw material is arranged at the extraction rectifying section (2), a solvent inlet is arranged at the bottom of the common rectifying section (1), and the lateral line product outlet is arranged at the upper part of the solvent recovery section (3). The apparatus and method have the advantages that the styrene separation efficiency is high, the apparatus investment is reduced, and the energy consumption is reduced.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method for refining trichlorosilane

InactiveCN101780957ACut equipment costs in halfSiliconHalogenated silanesSilanesDichlorosilane
The invention provides a method for refining trichlorosilane. When polysilicon is prepared according to a vapor deposition method, solution of dichloro-silane, trichlorosilane and silicon tetrachloride which are obtained in the gas discharged from a reduction furnace is processed through a rectifying tower. The method is characterized in that the dichloro-silane is extracted on the tower top and simultaneously the trichlorosilane and the silicon tetrachloride are extracted by lateral lines; the tower top temperature and any one middle section temperature T of the rectifying tower are measured; for keeping the measured middle section temperature T in a certain range, the quantity of reflux R of the tower top is controlled; when the middle section temperature T rises, the quantity of reflux R is increased; and when the middle section temperature T decreases, the quantity of reflux R is reduced. With the component change of the chlorosilane solution, the method prevents the reduction of the purities of the trichlorosilane and the silicon tetrachloride.
Owner:HUALU ENG & TECH
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