153 results about "Separation column" patented technology

The invention relates to the technical field of automatic control, and discloses a PLC-based seawater multi-nuclide separation automatic control method and system, and the method comprises the steps: obtaining analysis task parameters, such as a sample volume, a target nuclide type sequence, and the like; converting the data into an internal execution formula containing a precise time sequence and an actuator action sequence through PLC internal compiling logic; the method comprises the following steps: performing online pretreatment on original seawater based on sensor feedback of pH value, flow velocity and the like to obtain a sample flow with optimized conditions; according to system state data, multi-nuclide sequential adsorption is realized, and a separation column loaded with target nuclide is obtained; and sequentially eluting by using different eluents, and collecting to obtain the purified single nuclide component. The whole process runs in a full-automatic mode, the risk that experimenters are exposed to the radioactive environment is greatly reduced, errors caused by manual operation are effectively eliminated, and high consistency and traceability of analysis data of different batches and different monitoring mechanisms are guaranteed.

A gas chromatograph (100) for analyzing content of a gas sample includes a sample gas inlet configured to receive the gas sample and a carrier gas source (114) which provides a carrier gas. A separation column (120) is configured such that individual component gases in the sample gas separate as they move through the separation column (120). A first sample valve (112) is coupled to the sample gas inlet, the carrier gas source (114) and to a sample loop which is configured to contain a sample volume of the gas sample. The first sample valve (112) injects the sample volume into the separation column (120) and individual component gases in the sample gas separate as they move through the separation column (120). A detector (122) detects a concentration of an individual component gas as a function of a sensitivity of the detector (122). A controller (108) changes a response factor of the gas chromatograph by changing at least one of the sensitivity of the detector (122) and the sample volume.

The venturi-type scrubber may be used in conjunction with the removal of solids and quench gas-phase reaction products from the gas-phase reaction products. A method can include: providing a reaction product comprising a hydrocarbon gas and a solid; introducing the reaction product into a venturi type scrubber; introducing a scrubbing fluid into the venturi-type scrubber, wherein the scrubbing fluid is at a lower temperature than the reaction product; generating, by the venturi scrubber, a heterogeneous product comprising a scrubbed reaction product and a waste scrubbing fluid, the scrubbed reaction product comprising the hydrocarbon gas, and the waste scrubbing fluid comprising the scrubbing fluid and the solids; and separating the hydrocarbon gas from the multiphase fluid. A system may include a reactor; a venturi-type scrubber having a first inlet fluidly connected to the reactor and a second inlet configured to receive a scrubbing fluid; and a separation column configured to receive a multiphase stream from the venturi scrubber after solids are removed.

A liquid chromatograph of the present application can continuously perform separation and fractionation of a plurality of samples and includes a separation flow path provided with a liquid feed pump, a separation column, and a detector; a plurality of liquid handlers each including an injection section that performs an injection operation when introduced into the separation flow path and a fractionation section that performs a fractionation operation when introduced into the separation flow path; a selector that selectively switches the liquid handlers introduced into the separation flow path; and a controller that controls the operations of the liquid handlers and the selector and introduces the plurality of liquid handlers into the separation flow path in a prescribed order and causes each liquid handler to perform the injection operation and the fractionation operation, sequentially performing separation and fractionation of a plurality of samples assigned to each of the liquid handlers, the controller causing each of the liquid handlers to perform a preparation operation for performing the injection operation during introduction of the other liquid handler into the separation flow path and to perform the injection operation immediately after being introduced into the separation flow path.

The embodiment of the invention discloses a method and a device for preparing 212Pb based on 226Ra, and the method comprises the following steps: carrying out reactor irradiation treatment on a target material containing 226Ra to obtain an irradiated target material; and dissolving the irradiation target material to obtain a target material dissolving solution. The target material dissolving solution is placed in a first separation column to be subjected to first acid leaching treatment, a Th-containing adsorption column is obtained, and the first separation column is used for adsorbing Th. And carrying out second acid leaching treatment on the Th-containing adsorption column to obtain a Th-containing eluent. And carrying out standing treatment on the Th-containing eluent to obtain a standing solution containing 228Th. And the standing liquid containing 228Th is placed in a second separation column to be subjected to third acid leaching treatment, eluant containing 212Pb is obtained, and the second separation column is used for separating lead.

The invention relates to the field of chemical equipment, and discloses a production device and method of 1, 1-difluoroethane. The production apparatus comprises: a reactor; a reflux tower and a first condenser, a feed inlet and a liquid phase outlet of the reflux tower are connected with the reactor, a gas phase outlet of the reflux tower is connected with the first condenser, and a gas phase outlet of the first condenser is connected with the reactor; the separation tower is connected with a liquid phase outlet of the first condenser, a liquid phase outlet of the separation tower is connected with the reactor, a gas phase outlet of the separation tower is connected with the second condenser, a gas phase outlet of the second condenser is connected with the reactor, and a liquid phase outlet of the second condenser is connected with the separation tower; and the post-treatment system is connected with the liquid phase extraction port of the separation tower. The production device can be used for separating and recycling hydrogen fluoride, reducing the content of hydrogen fluoride in the product, eliminating the consumption of fresh water and alkali liquor caused by a water alkali washing process, avoiding the generation of aqueous hydrofluoric acid with low additional value, and eliminating a heavy component removal tower.

The present application relates to a multi-column combined low-pressure column chromatography device and a process for purifying (S)-1-(carbamoyl)methyl-4-hydroxy-2-pyrrolidinone reaction liquid. It comprises a sample column (1), a rough separation column (2), a fine separation column (3), a target product collection tank (4), a waste mobile phase collection tank (5), a waste mobile phase regeneration system (6), a mobile phase storage tank (7), a cleaning liquid storage tank (8), a waste liquid tank (9), a pump (10), and a valve (11). The device cooperates with a specific process to significantly improve the column chromatography separation efficiency and impurity removal capacity, completely separates the impurities with similar polarity, realizes high productivity and high impurity removal capacity under the condition of severe load overload of the chromatographic column, and correspondingly reduces the use amount of the mobile phase by more than 60%. The purity of the crude product after the column can reach more than 99%, and the yield is stable at more than 85%.

The utility model discloses an isotope separation and purification column frame which comprises a limiting disc, an inserting disc and a stand column, the limiting disc can rotate on the outer side of the stand column; a plurality of strip-shaped grooves are formed in the limiting disc in the circumferential direction, and a plurality of inserting holes corresponding to the strip-shaped grooves are formed in the inserting disc; connecting holes corresponding to the inserting holes are formed in the waste liquid collecting box, and guide pipes are connected between the connecting holes and the corresponding inserting holes; and a high-pressure spray head is arranged at the upper end of the hollow guide pipe, extends to the upper end of the limiting disc and corresponds to one strip-shaped groove. According to the utility model, the residual liquid in the separation column directly drops into the waste liquid collection box, so that the chemical residual liquid is prevented from being exposed; the separation column can be cleaned without being picked up and transferred.

A method of introducing a sample into a separation column includes introducing the sample into a trap column, isolating the trap column from ambient atmosphere and pressurizing the trap column to a first pressure while the trap column is isolated from ambient atmosphere, providing a fluid connection between the trap column and the separation column after pressurizing the trap column to the first pressure, supplying the sample from the trap column to the separation column.

The present application relates to a kind of device and method for extracting high-purity chemicals from coal tar wash oil fraction, comprising: naphthalene separation column, methylnaphthalene separation unit, acenaphthene-fluorene-dibenzofuran separation unit;Methylnaphthalene separation unit includes methylnaphthalene separation tower, β-methylnaphthalene subunit and α-methylnaphthalene subunit connected in sequence;Acenaphthene-fluorene-dibenzofuran separation unit includes light removal tower, acenaphthene subunit, dibenzofuran subunit and fluorene subunit connected in sequence;The material outlet of the bottom of naphthalene separation column is connected with methylnaphthalene separation tower;The material outlet of the bottom of methylnaphthalene separation tower is connected with the material inlet of light removal tower.The device provided by the present application can effectively extract target chemicals in coal tar wash oil fraction by reasonable configuration of the device and coupling cooperation between devices, and obtain high-purity products.Compared with existing wash oil extraction chemical technology, it has higher efficiency, wider applicability and better product quality.

The present invention relates to a method in a liquid chromatography system comprising a first separation column, a second separation column, a separation pump upstream of the separation columns, and a detector downstream of the separation columns, wherein the method comprises: detecting a failover activation event with respect to one of the separation columns, wherein the separation column is a non-operational column while the other is an operational column; and operating the liquid chromatography system in a failover mode after detecting the failover activation event. Operating the liquid chromatography system in failover mode comprises: enabling fluid communication between the separation pump, the operational column, and the detector, and preventing fluid communication between the non-operational column and the detector. The present invention also relates to a liquid chromatography system.

A gas chromatograph includes a sample gas generator, a separation column configured to separate components of an introduced sample gas, a gas supply source configured to supply a carrier gas to the sample gas generator to carry the sample gas from the sample gas generator to the separation column when the components of the sample gas are analyzed, a controller configured or programmed to acquire an in-analysis usage amount of the carrier gas based on an analysis time for analyzing the components of the sample gas, and a flow rate of the carrier gas supplied from the gas supply source to the sample gas generator, and a display configured to display the in-analysis usage amount acquired by the controller.

Systems for performing two-dimensional chromatography are disclosed. The system includes a first switching valve fluidly coupled to a first separation column. The system includes a second switching valve coupled to a second separation column. The second switching valve is fluidly coupled to the first switching valve. The system includes an input / output valve in fluid communication with the first switching valve and the second switching valve that is configured to direct one or more mobile phases to the first switching valve. The system includes a sampling valve fluidly coupled to the first switching valve that includes at least one fraction capturing device. Methods of separating compounds using the systems are disclosed. Methods of retrofitting existing two-dimensional chromatography systems are also disclosed.

The utility model relates to the technical field of separation of discrete materials, and discloses a pavement marking coating glass bead separation test device, which aims at solving the technical problems existing in the separation of pavement marking coating glass beads and quartz sand in the prior art, and comprises a base and a magnetic stirring heater, the magnetic stirring heater is provided with a separation column in a matched mode, the separation column is provided with a spiral long-neck separation funnel in a matched mode, the separation column close to the sedimentation tank with the cover is communicated with the lower portion of the sedimentation tank with the cover, the sedimentation tank with the cover is connected with the liquid storage tank with the cover, and a frequency conversion liquid circulating pump of the liquid storage tank with the cover is connected with a backflow pipe. And the return pipe is connected with the separation column far away from the sedimentation tank with the cover. According to the utility model, a large amount of test time can be saved in the test process. The utilization rate of the organic solvent is improved, volatilization of the organic solvent is reduced, and harm of the organic solvent to testers is reduced. The separation time of the glass beads and the quartz sand is shortened, the separation effect is improved, and the accuracy of test detection results is ensured.

A combined separation process and system for separating a high purity polymer grade propylene product from a liquefied petroleum gas stream. In an example, the systems and methods combine the functions of a dethanizing column and a depropanizing column with a C3 separation system to separate a high purity polymer grade propylene product from a liquefied petroleum gas stream, thereby eliminating the need for separate dethanizing columns, depropanizing columns, and C3 separation columns.

The present application provides an automatic analysis device with HPLC, which can automatically determine the completion of column equilibration for preparation action of measurement, and determine the error position when an error occurs during equilibration. The automatic analysis device (100) comprises: a liquid feeding part (102) with a liquid feeding device (106) and a liquid feeding flow path (C0) and feeding mobile phase; a sample introduction part (103) for introducing sample into mobile phase; a separation column (113) for separating sample into multiple components; a detector (105) for detecting components; and a control part (114). The pressure sensor (107) detects the pressure of the liquid feeding flow path (C0), and the control part (114) calculates the pressure rise rate after the start of mobile phase feeding, the compression pressure change amount and the pressure average after the mobile phase feeding lasts for a certain time based on the pressure detected by the pressure sensor (107), and determines the completion of equilibration of the separation column (113).

The application discloses a separation column resin saturation online monitoring method and system, and belongs to the technical field of medical apparatuses, which comprises the following steps: acquiring real-time acoustic impedance data of the inlet end and the outlet end of the separation column; calculating the instantaneous difference value of the real-time acoustic impedance data of the inlet end and the outlet end as the real-time acoustic impedance instantaneous difference value; measuring the radial blood flow velocity distribution of the middle section of the separation column and generating a flow field disturbance factor according to the radial blood flow velocity distribution; applying a local pulse thrust to the resin bed layer in the separation column and acquiring the instantaneous acoustic impedance difference value after disturbance; and generating a relaxation recovery curve according to the change of the instantaneous acoustic impedance difference value after disturbance with time. The application can overcome the problem that the existing monitoring method cannot adapt to the blood non-Newtonian fluid characteristics and the interference of flow field dynamic fluctuations on the monitoring signal, so as to eliminate the non-absorption signal deviation caused by the flow field fluctuations and further improve the resin saturation monitoring accuracy.

The invention relates to a solid-phase extraction separation method and a kit for respectively separating actinide elements. The actinide element is U, Np and / or Pu, and at least one element X selected from Am or Cm. The method comprises the following steps: (1) a test solution containing the actinide elements flows through a cascade column formed by sequentially connecting a separation column 1 and a separation column 2 in series from one side of the separation column 1, the separation column 1 is filled with resin 1, the resin 1 comprises porous base resin 1 and a complexing agent 1 which is loaded on the porous base resin 1 and is used for complexing with U, Np and / or Pu, the separation column 2 is filled with resin 2, and the resin 2 is used for separating the actinide elements; the resin 2 comprises porous base resin 2 and a complexing agent 2 which is loaded on the porous base resin 2 and is used for complexing with the element X; and (2) eluting the separation column 1 by using an Np eluent containing AHA and nitric acid, a Pu eluent containing oxalic acid and ascorbic acid, and / or a U eluent containing ammonium carbonate, and eluting the separation column 2 by using an element X eluent containing AHA and hydrochloric acid. The kit comprises the cascade column and the eluent.

The invention discloses a system and a method for measuring the content of each hydrocarbon in shale, and belongs to the technical field of petroleum geological exploration. The invention firstly discloses a system for measuring the content of each hydrocarbon in shale, a sample tank is connected with a reversing valve, and the reversing valve is sequentially connected with a sample inlet, a cold trap, a separation column and a first hydrogen flame ionization detector to form a gas path for detecting the content of each hydrocarbon; the reversing valve is sequentially connected with the sample inlet, the cold trap, the total content column and the second hydrogen flame ionization detector to form a total hydrocarbon content detection gas path; the invention further discloses a method for measuring the content of each hydrocarbon in shale by using the system. According to the method, two hydrogen flame ionization detectors are combined to determine the total hydrocarbon content and the content of each hydrocarbon component in the sample in parallel, and finally, the absolute content of each hydrocarbon component can be directly obtained. In addition, the ball milling tank is adopted, so that the sample is always kept in a closed state in the crushing and testing processes, and the light hydrocarbon retention capacity is remarkably improved.

The invention relates to the technical field of counter-current chromatographs, in particular to a high-mass-transfer separation column of a single-rotation counter-current chromatograph, which comprises a separation column bottom plate arranged on a main shaft, the power amplification plate is hung on the separation column bottom plate and connected with the ultrasonic generator, and a spiral groove is formed in the power amplification plate; the spiral pipe is embedded in the spiral groove; the spiral pipe pressing plate is arranged above the spiral pipe; the separation column top plate is arranged above the spiral pipe pressing plate; and the switching assembly is arranged on the top plate of the separation column and is used for connecting an external feeding pipe with the inlet / outlet of the spiral pipe. A plane coil pipe structure formed by winding a single continuous pipeline is adopted to replace a traditional split type combined structure, and the risk of sealing leakage of a combined surface is eliminated; interphase mass transfer online dynamic regulation and control are realized through the ultrasonic generator, so that the separation efficiency is remarkably improved; the modular design simplifies the manufacturing process, and reduces the cost and maintenance difficulty.

The application discloses a multi-mode enrichment analysis device and process capable of detecting xenon background in air, which comprises a gas taking and enrichment unit, a pressurized adsorption, vacuum desorption and reverse desorption purification and concentration unit connected with each other through a gas flow pipeline and a refrigerator for realizing shallow low temperature. The application controls the adsorption temperature of the refrigerator to be-28 DEG C to 18 DEG C, raises the tail pressure of each xenon separation column, and increases the dynamic adsorption coefficient of each xenon separation column from 0.43 L / g under normal temperature and pressure to 1.2-3.4 L / g, thereby improving the adsorption efficiency and reducing the adsorbent loading amount of each xenon separation column under the determined gas volume. Through vacuum desorption and reverse desorption, the carrier gas volume of complete desorption can be reduced from 8-20 times the desorption volume to 3-5 times, thereby improving the desorption efficiency. The column filler loading surplus can be increased from about 30% to 50-300%, thereby greatly improving the stability and reliability of the device, and realizing self-adaption of the filler usage amount to the gas taking amount, which can meet the needs of high-sensitivity large-volume sampling monitoring and sensitive and rapid sampling monitoring.

A laboratory type linear magnetic agglomeration separation device comprises a supporting frame, an inclined strut is arranged on the supporting frame, two magnetic systems are arranged on the inclined strut, a separation column is arranged between the two magnetic systems, a separation sieve plate is arranged in the separation column, a feeding opening is formed in the top of the separation column, and at least one middling / tailing discharging opening is formed in the middle of the separation column. And a concentrate discharge hole is formed in the bottom of the separation column. The device can be used for magnetite separation test evaluation, and can also be used as continuous test equipment connected in series in a magnetite separation process flow to realize continuous ore feeding and continuous separation.

This invention relates to the field of radioactive separation technology, and discloses an automated solution preparation and delivery control method and system for At-211 separation, comprising: Step 1, determining the column bed volume, setting the minimum operating volume particle size, and determining the pump running time; Step 2, solidifying the reagent and matching it with the valve inlet, obtaining the background current and determining the low threshold current, high threshold current, tail threshold current, and volume confirmation rules for the buffer solution; Step 3, generating the loading solution; Step 4, delivering the low-acid washing column solution, buffer solution, and preset equilibration solution to obtain the separation column; Step 5, loading the sample and comparing the output current of the ionization chamber with the low threshold current and high threshold current to determine the three states; Step 6, switching the collection valve to the product bottle and cutting off the organic elution solvent; Step 7, controlling the collection valve and determining the actual product volume. This invention achieves automated and quantitative control of solution preparation, delivery, elution, and collection during the At-211 separation process.

In an automatic analyzer where a plurality of types of separation column are selectively used for performing a chromatographic analysis, an automatic analyzer configured to install a separation column of an intended type at an aimed position, and a method for installing the separation column in the automatic analyzer are provided. Identification mechanisms, a computer, and a display unit are included. The identification mechanisms read identifiers included in separation columns when the separation columns are installed at installation positions. The computer determines whether identification information of the identifiers read by the identification mechanisms matches an installation pattern registered in advance or not. The display unit notifies an alarm when the identification information is determined not to match the installation pattern by the computer.

A preparative liquid chromatograph comprises a separation column, a detector for detecting sample components in an eluate from the separation column, a component trapping unit for introducing the eluate into any of a plurality of trap columns to trap the components, a recovery unit for recovering the eluate into a container, a flow path switching unit for switching a flow path to introduce the eluate to either the component trapping unit or the recovery unit, and a control unit for controlling the flow path switching unit to introduce the eluate into the component trapping unit until the number of components sequentially detected with a single sample introduction into the separation column becomes equal to the number of trap columns, and to introduce the eluate into the recovery unit after the number of the components has exceeded the number of trap columns.

A method and corresponding apparatus for extracting ethane from an initial natural gas stream. The method includes the steps of recovering and compressing an overhead stream (98) from a separation column (34) to form a compressed purified natural gas stream (102); liquefying the compressed purified natural gas stream (102) in a liquefaction unit (24) to form a pressurized liquefied natural gas stream (120); flash expanding the pressurized liquefied natural gas stream (120) and recovering in a storage vessel (66); recovering and compressing an expanded flash gas stream (126); separating the compressed flash gas stream (132) into a fuel stream (20) and a recycle stream (134); cooling and expanding the recycle stream (134) and then introducing the cooled and expanded recycle stream into an overhead stage of the separation column (34).

The utility model discloses equipment for rapidly separating 5-aminolevulinic acid, and relates to the technical field of rapid separation of 5-aminolevulinic acid, the equipment for rapidly separating 5-aminolevulinic acid comprises a column body, the top end of the column body is provided with a top head seat, the upper end of the top head seat is provided with a feed inlet, and the lower end of the top head seat is provided with a discharge outlet. A bottom end base is arranged at the bottom end of the column body, a discharging port is formed in the lower end of the bottom end base, supporting legs are welded to the lower surface of the bottom end base, water inlet pipes are arranged on the two sides, close to the top base, of the column body, a water distribution assembly is arranged on one sides of the water inlet pipes, and a material distribution assembly is arranged at the upper end of the water distribution assembly. According to the scheme, the problems that most of existing separation columns for rapid separation of 5-aminolevulinic acid are subjected to single-barrel discharging and water discharging, are located in the centers of the columns and are subjected to single-point discharging and water discharging, the situation that more water is discharged in the middle and less water is discharged on the periphery is caused, and therefore distribution uniformity is caused, and the separation uniformity and efficiency are affected are solved.

The present invention discloses a combined magnetic and gravity separation device, comprising a separation column, a feed port provided at the top of the separation column, a pulsating device and a water inlet provided at the bottom of the separation column, both the pulsating device and the water inlet being connected to the separation column, an excitation coil sleeved on the outer circumference of the separation column, the pulsating device and the water inlet capable of providing a pulsating flow within the separation column, and the excitation coil capable of providing a magnetic field for the separation column, so as to cause the minerals within the separation column to have different settling velocities, thereby separating the minerals. The combined magnetic and gravity separation device of the present invention can improve the accuracy and efficiency of mineral separation.

The invention belongs to the technical field of isotope preparation, and particularly relates to a system and method for producing hydrogen isotopes with low energy consumption. The embodiment of the invention provides a system and a method for producing hydrogen isotopes with low energy consumption. The system comprises a power supply, a first storage tank, a steam generation heater, a heat recovery solid oxide tank, a gas-water condensation separator, a second storage tank, a gas cylinder storage tank and a purification separation column, heavy water in the first storage tank enters a steam generation heater to be heated into heavy water steam, and then enters a heat recovery solid oxide tank to be continuously electrolyzed and heated; and the cathode electrode of the heat recovery solid oxide tank generates high-temperature deuterium gas, and finally high-purity deuterium gas is separated and produced through the purification column. Due to the design of heat exchange, the heat loss of the system is reduced, the technological process is simple and efficient, the utilization rate of raw materials is increased, good economic practicability is achieved, the problem of high energy consumption in the application process of the solid oxide technology is solved, the product cost is reduced, and industrial application is promoted.

The application provides an evaluation device and method for fluid distribution of a separation column, which comprises the following steps: loading adsorbents into the separation column, and dividing the separation column into several logical regions according to the height of the separation column from top to bottom, and setting several probes at the boundary of adjacent logical regions; installing a distribution member which can be used to guide and distribute fluid at the top of the separation column; installing a flap which can be used to open and close the liquid outlet at the bottom of the separation column; preparing a liquid containing a tracer component, introducing the liquid containing the tracer component into the separation column from the distribution member, and controlling the liquid flow rate to pass through the logical regions in sequence, collecting the conductivity data of the liquid at the boundary of adjacent logical regions by the probes; discharging the liquid containing the tracer component through the separation member, and then discharging and sampling the adsorbents in different logical regions by controlling the turning of the flap, and measuring the conductivity data of the tracer component in the adsorbents.