21 results about "Separation column" patented technology

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 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.

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.

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.

This utility model relates to the field of methyl methacrylate preparation apparatus, specifically to a dual-tower separation tower for methyl methacrylate preparation, comprising a support frame, with a first tower and a second tower respectively mounted on a pair of supports. Both the first and second towers are equipped with electrically heated rings. A conveying pipe is provided between the first and second towers. Pressure control mechanisms are provided at the rear of both the first and second towers. A stirring mechanism is installed at the bottom of the first tower, with a motor driving an anchor-type stirring rod to rotate, ensuring uniform mixing of the raw materials, avoiding localized aggregation, improving raw material utilization and product quality. This solves the problem of uneven mixing and incomplete reaction caused by the lack of stirring in traditional towers. With the help of temperature and pressure monitors and a vacuum machine and compressor in the pressure control mechanism, the temperature and pressure of the two towers are precisely controlled according to reaction requirements.

A technique is provided that shortens the setup time for analytical methods by pretreating samples using SPE columns before analysis in the analytical unit. In the analytical system, a first flow path (21) includes one or more solid-phase separation columns. Samples from an autosampler (10) are introduced into either the first flow path (21) or the second flow path (22). The samples are then conveyed from either the first flow path (21) or the second flow path (22) via a switching valve (30) to the analytical column and detector (50) within the column oven (40). Sample purification is performed in the first flow path (21), while it is not performed in the second flow path (22).

This invention discloses a monolithic polyethylene glycol (PEG) hydrogel column and a method for the batch separation and purification of extracellular vesicles. The monolithic PEG hydrogel column is obtained by directly polymerizing PEG hydrogel in a chromatography column. This invention uses a combination of the PEG hydrogel monolithic column and a size exclusion separation column with uniform pore size of silica for the separation and purification of extracellular vesicles. The PEG hydrogel has high water absorption, enabling efficient sample concentration; the uniformly sized silica microspheres with uniform pore size are used for the separation of extracellular vesicles and impurity proteins, offering more uniform particle and pore size compared to bio-based packing materials; the improved rigidity enhances column separation efficiency and reduces purification costs. Compared to existing methods such as ultrafiltration and polymer precipitation, the combined concentration and separation column method of this invention is safe and non-toxic, with mild concentration conditions, effectively avoiding damage to extracellular vesicles; the concentration process is simple, the preparation cost is low, and it meets the needs of large-scale purification of extracellular vesicles, making it suitable for the large-scale separation and purification of extracellular vesicles from biological samples such as milk, plant-derived, and cell culture media.

The invention is about an electrolysis system (01) for the electrolysis of CO2 comprising. For the electrolysis process a plurality of electrolysis cells (02) is required. An electrolyte reservoir (04) with connection to the electrolysis cells (02) and a cleaning system (06) is provided. To enlarge the operational time for the electrolysis system (01) it is foreseen that an electrolyte can pass through the cleaning system (06) during operation of the electrolysis system (01), wherein the cleaning system (06) comprises a formate reduction module (21). Here, a first separation column (22) and a second separation column (23) are arranged fluidly in parallel, which enables an alternating flow. The separation columns (22, 23) have a resin filling to enable a reduction of formate.

The utility model relates to the technical field of oil and gas separation in pit, disclose recyclable three -stage oil and gas separation pipe column, including separation column, the top of separation column is equipped with roof, the inside of separation column is provided with separation mechanism, separation mechanism is used for multistage separation oil, gas, water, the left and right sides of roof all are provided with mounting mechanism, the mounting mechanism is used for quick installation roof, the separation mechanism includes a plurality of fixed cover, a plurality of fixed cover's outer wall installs in the inside bottom of separation column, the inside bottom fixed connection of two fixed cover of top has oil -repellent membrane. In the utility model, oil and gas mixture enters separation column, first passes through the oil -repellent membrane of fixed cover inside, oil is adhered and is guided from the oil suction pipe, and moisture is down and is worn; moisture to the lower fixed cover, the residual oil floats and is guided from the oil outlet of suction pipe; the impurity containing moisture reaches the cup bottom and is discharged through the water suction pipe, realize efficient separation, improve the crude oil recovery rate and the drainage cleanliness.

This invention relates to the field of polysilicon production equipment technology, and particularly to a trichlorosilane purification system in the polysilicon production process. The system comprises: a primary crude distillation column connected to a cold hydrogenation initial separation column; a low-boiling-point recovery column connected to the primary crude distillation column; a secondary crude distillation column connected to the primary crude distillation column; a primary rectification column connected to the secondary crude distillation column; a high-boiling-point recovery column connected to the primary rectification column; a secondary rectification column connected to the primary rectification column; a secondary rectification column connected to the primary crude distillation column; a tertiary rectification column connected to the secondary rectification column; the reboiler of the tertiary rectification column connected to the primary rectification column; a light-weight removal column connected to both the low-boiling-point and high-boiling-point recovery columns; a heavy-weight removal column connected to the light-weight removal column; the reboiler of the high-boiling-point recovery column connected to the heavy-weight removal column; the gas phase outlet of the heavy-weight removal column sequentially connected to a gas phase adsorption device and a light-weight separation column; the reflux port of the light-weight separation column connected to the light-weight removal column; and a heavy-weight separation column connected to the light-weight separation column. This invention improves the stability and reliability of the distillation system under high load operation.

The utility model relates to a kind of returning device of DMC separation tower, the separation tower includes tower body, the packing section being located in the inside of tower body, the distillation section being located below packing section and the rectification section being located above packing section, and the packing section includes upper packing layer and lower packing layer;The returning device includes distillation section returning component and rectification section returning component;The distillation section returning component includes returning pipeline two, conveying pump two being located on returning pipeline two, the nozzle being located at the output end of returning pipeline two, diffusion component two being located on lower packing layer.The utility model sets diffusion component two between upper packing layer and lower packing layer, can make the mixed system that is returned by returning pipeline two and conveying pump two and is shaken to diffuse, so as to be fully contacted with lower packing layer, promote the progress of ester exchange reaction, avoid the problem of local catalyst consumption too fast caused by concentratedly contacting with lower packing layer.

This invention relates to the field of liquefied petroleum gas (LPG) detection technology, specifically a method for detecting n- and isobutylene components in LPG, comprising the following steps: First, turn on the gas chromatograph, data workstation, and gas source; confirm that the two carrier gas supplies are stable and adjust them to preset flow rates through their respective pressure regulating valves and flow controllers; set the TCD detector temperature and operating current; set the column oven to constant temperature; and place the ten-way valve in the initial "injection / analysis" position. In this state, carrier gas 1 flows through the pre-column and the quantitative loop, while carrier gas 2 flows through the ten-way valve and directly connects to the TCD detector via the separation column. This invention solves the problem of difficult separation and determination of C4 components in LPG, and the measurement range is adjustable, allowing for continuous and stable online measurement of n- and isobutylene gases in LPG, and can be extended to measure other C4 and C5 components.

The present application relates to a kind of comprehensive utilization method of ethylene cracking C5, comprising the following steps: (1) ethylene cracking C5 by thermal polymerization reaction, alkyn component, cyclopentadiene (CPD) is polymerized to generate mixture (F2);(2) the material obtained in the first step is sent to separation column separation, the bottom material is sent to flash tank, after removing heavy component, DCPD hydrogenation resin polymerization raw material is obtained, the top is obtained separation product (F3);(3)the separation product (F3) obtained in the second step is sent to extraction unit, and elastomer raw material and curing agent special material are obtained.The process flow of the present application is simple, production energy consumption is low, the requirement to equipment is not high, and it is suitable for scale production application.

The application relates to a process device and method for preparing high-purity high-abundance neon-22 isotope laser gas, which comprises a natural neon gas raw material storage tank, a first-stage thermal diffusion separation column, a second-stage to (N-1)-stage thermal diffusion separation column, an N-stage thermal diffusion separation column and a low-temperature adsorption tower connected in series, wherein the thermal diffusion separation column is used for separating and enriching neon isotopes; based on the thermal diffusion effect difference of neon-22 isotopes and other isotope components, the abundance of neon-22 isotopes is enriched. After multi-stage thermal diffusion separation, neon-22 isotopes with an abundance of 99% to 99.99% are obtained at the end of the (N-1)-stage thermal diffusion separation column, and neon-22 isotopes with a purity of 99.99% to 99.999% are prepared. Compared with the prior art, the application significantly improves the abundance of neon-22 isotopes, and based on the demand for high-purity laser gas for laser gyro navigation, the neon-22 isotopes are deeply purified, that is, neon-22 isotope laser gas with an abundance of 99% to 99.99% and a purity of 99.99% to 99.999% is obtained.

A gas chromatograph mass spectrometer includes a gas chromatograph part including a separation column, a mass spectrometer part, and a controller configured to control at least an ionization part of the mass spectrometer part. The ionization part includes an ion source box having a space for ionizing the components flowing out from an outlet of the separation column in the inside, a heater for adjusting a temperature of an ion source box, and a filament that is arranged outside of the ion source box and generates an electron for ionizing the components flowing out from the outlet of the separation column. The controller is configured to, after applying voltage to the filament, adjust a temperature of the ion source box affected by heat emitted from the filament to a predetermined temperature by controlling output of the heater in relation to magnitude of heat generation of the filament.

This invention discloses a separation tower and a carbon disulfide production system containing the separation tower, including a separation tower for preliminary cooling and washing of sulfur-containing gas-liquid mixtures from a reactor; it also includes an internal circulation unit, a heat recovery unit, and a control unit; the separation tower includes a tower shell, within which a first-stage washing and cooling section and a second-stage fine washing section are provided from bottom to top, and a liquid collector is provided below the second-stage fine washing section. The liquid collector has a gas-liquid separation structure that allows gas to pass through and guides liquid, and is connected to a carbon disulfide outlet opened on the tower shell; this invention belongs to the field of chemical separation technology, and the technical effect achieved is: using self-produced crude carbon disulfide as part of the washing liquid for circulation, and combining it with the waste heat of the gas at the top of the tower for preheating, the preheating process not only recovers waste heat, but also reduces the system's demand for external cooling load.

The application discloses an online detection method for volatile organic compounds based on gas chromatography, and relates to the technical field of gas chromatography analysis.The method is characterized in that: the air to be detected is introduced into a pretreatment pipeline with a built-in spiral condenser for low-temperature enrichment, and then the concentrate is transferred to a resolution chamber through instantaneous heating.Subsequently, the carrier gas carries the resolved material into a gas chromatography separation column, and the components are separated in time sequence through programmed temperature rising.The separated components are detected by a flame ionization detector to generate an original spectrum containing retention time and peak area data.Finally, the original spectrum data are compared with a pre-stored volatile organic compound fingerprint feature library, the target species are matched according to the retention time, and the concentration is directly calculated by using the standard peak area response coefficient in the library to output the detection result.The method improves the enrichment and resolution efficiency through spiral condensation and instantaneous thermal resolution, realizes rapid qualitative and quantitative analysis by using the fingerprint feature library, and improves the automation level and analysis efficiency of online monitoring.

A liquid chromatograph capable of inhibiting mixing of bubbles into a flow path is provided with a mobile phase to a reservoir bottle without stopping analysis and liquid feeding. A liquid chromatograph (100) includes a liquid feeding device (104) that feeds a mobile phase, a sample injection section (105) that injects a sample into the mobile phase fed from the liquid feeding device (104), a column (106) that separates the sample carried by the mobile phase fed from the sample injection section (105), and a detection device (108) that detects the sample separated by the separation column (106). Further, the liquid chromatograph (100) includes a reservoir bottle (102) that stores the mobile phase carried by the liquid feeding device (104), a mobile phase supply bottle (101) that supplies the mobile phase to the reservoir bottle (102), a mobile phase supply pump (103) that supplies the mobile phase stored in the mobile phase supply bottle (101) to the reservoir bottle (102), and a control section (111) that controls the operation of the mobile phase supply pump (103) and determines the amount of the mobile phase supplied from the mobile phase supply bottle (101) to the reservoir bottle (102).