210 results about "Cold trap" patented technology

A cooling system includes a liquid loop, a vapor compression loop, and a heat exchanger in fluid communication with each of the liquid loop and the vapor compression cycle loop. The liquid loop includes a cold sink for cooling a heat load. The vapor compression cycle loop is fluidly coupled to the liquid loop by a separator, which is configured to separate a two-phase form of a working fluid received from the cold sink into a vapor form of the working fluid and a liquid form of the working fluid.

The invention discloses an off-line carbonate cluster isotope sample preparation system and preparation method, the system adopts a main controller and a plurality of sub-controllers to work cooperatively, parameters such as temperature, pressure, gas flow direction and the like are accurately controlled, and the stability and repeatability of sample preparation are ensured; an SPR gas sensor and a fluorescent gas sensor are arranged, CO2 concentration and pressure changes are monitored in real time, accurate data support is provided for a main control machine, and dynamic adjustment and optimization are achieved; a multi-stage cold trap design is adopted, and liquid nitrogen and a methanol-liquid nitrogen mixture are combined for cooling, so that impurity gas is effectively separated, and high purity of final CO2 gas is ensured; the system adopts a modular design, is simple and convenient to operate, is easy to maintain and upgrade, and has good expansibility and universality.

A testing device for measuring oil, gas and water contents in rock has a heating desorption unit that has a sample chamber for placing a rock sample to be detected, a crushing mechanism arranged within the sample chamber, and a heating mechanism. The heating desorption unit crushes and heats the rock sample in a sealed manner to achieve gas analysis and desorption analysis of oil and water contained therein, thus obtaining components to be detected. The device further has a cold trap collection unit in communication with the sample chamber, a light hydrocarbon capture unit in communication with the cold trap collection unit, a gas measuring unit in communication with the light hydrocarbon capture unit for measuring and calculating a gas volume; and a central control unit for controlling the testing device.

The utility model discloses a process parameter experiment and selection device for harmless treatment of chemical waste salt, which comprises a reaction furnace, a movable reaction device, a gas inlet pipe, a gas cylinder, a gas outlet pipe, a cold trap and a gas analyzer, the movable reaction device is mounted at an opening in the lower end of the reaction furnace through a sealing flange, and comprises a sample bearing part for feeding a sample into the reaction furnace; a gas inlet pipe is arranged in the movable reaction device, and the gas cylinder is connected with a gas inlet of the gas inlet pipe and used for inputting reaction atmosphere into the reaction furnace; gas generated by the reaction of the sample in the reaction furnace is output through an upper end gas outlet pipe; the cold trap is used for cooling and filtering gas generated by reaction; and the gas analyzer is connected with the cold trap and is used for performing component analysis on the gas filtered by the cold trap. According to the utility model, technological parameters of harmless treatment can be quickly determined by using a small amount of waste salt.

The invention relates to a preparation method of antimony pentafluoride, which comprises the following steps: preheating raw material gas nitrogen trifluoride, placing nitrogen trifluoride and antimony powder in a tubular furnace reactor made of a specific material, carrying out gradient heating reaction at 300-400 DEG C under the condition that the antimony powder is distributed by adopting a multi-layer nickel plate tiled structure, carrying out reaction for 10-40 seconds, and carrying out solid filtration through a filter after the reaction is completed, so as to obtain the antimony pentafluoride. And carrying out cold trap collection to obtain an antimony pentafluoride product. The diameter of the reactor is made of a nickel material or Monel to prevent corrosion of antimony pentafluoride, the number of tiled layers of nickel plates is r / 5-r / 10, the contact area is increased, the reaction yield is increased, and the utilization rate of the raw material nitrogen trifluoride is increased.

The invention discloses a detection method for an ODS detection system, which comprises the following steps: S1, sample introduction trapping: a first cold trap is at a first temperature, and the first cold trap traps all ODS in a sample gas; s2, first desorption: the second cold trap is at a second temperature, the first cold trap is heated to a third temperature, ODS with the boiling point smaller than or equal to the boiling point of CO2 in the first cold trap is desorbed out, CO2 adsorption is conducted through a CO2 adsorption pipe, and the ODS desorbed out of the first cold trap after adsorption through the CO2 adsorption pipe is focused through the second cold trap; s3, secondary analysis: heating the first cold trap to a fourth temperature, analyzing the remaining ODS in the first cold trap, and focusing the remaining ODS in the first cold trap by the second cold trap; and S4, injection: heating the second cold trap to a fifth temperature, analyzing all ODS in the second cold trap, and injecting the ODS into the GCMS detection device. The method has the advantages of high test precision and high test accuracy.

The present disclosure relates to a measuring method and device for trace and ultra-trace oil content. The measuring device of the present disclosure includes a cryogenic enriching device, an extracting device and an infrared spectrometer; The cryogenic enriching device includes a Dewar container and a U-shaped pipe; The extracting device includes an extractant container, an input pipe, an outlet pipe and an extraction liquid quantitative pipe; A mass flowmeter is further disposed on the U-shaped pipe, the oil content in the gas is calculated according to the measured total mass of the gas and the oil concentration of the extraction liquid measured by the infrared spectrometer. The present disclosure further provides a measuring method, which converts the measurement of oil content in gas into the measurement of oil concentration in liquid extractant through effective extraction by liquid nitrogen cold trap enrichment mode, and adopts infrared spectrophotometry to accurately measure.

The application discloses a kind of electronic grade metal organic precursor vacuum rectification device and method, it is related to rectification technical field, device includes raw material tank, rectification tower, crude product tank, product tank, sampling filling glove box, vacuum pump and cold trap;The raw material tank production pipe is connected with rectification tower kettle;The rectification tower top product sampling outlet is connected with production pipeline, and production pipeline is connected with crude product tank and product tank import, and the crude product tank and product tank are connected with nitrogen and vacuum pipeline;The vacuum pipeline is connected with cold trap, and cold trap is connected with vacuum pump;The product tank feed pipeline is connected with sampling filling glove box;Method ensures that the pressure in crude product tank is lower than the pressure of crude product tank material sampling outlet and the pressure in product tank is lower than the pressure of product tank material sampling outlet.The application can effectively solve the problem that metal organic precursor is difficult to be industrialized and continuously produced in the process of rectification, with higher operating temperature, faster decomposition, lower product purity and greater difficulty in vacuum rectification.

The application relates to a method for synthesizing and refining electronic-grade hexachloroethyldisilane, and specifically, trichlorosilane raw material is mixed with protective gas into a raw material buffer tank, a mixed gas obtained through the mixing is subjected to a catalytic synthesis reaction under the irradiation of an ultraviolet light source, a product obtained through the reaction is subjected to condensation separation, gaseous trichloromethane returns to the raw material buffer tank to continuously participate in the synthesis reaction, the mixed liquid in the cold trap is warmed and vaporized, hexachloroethyldisilane is obtained through two-step refining, and the purity of the product hexachloroethyldisilane can reach the electronic grade. The application takes trichlorosilane as the initial raw material, the price of the raw material is low; the photo-catalysis is used as the synthesis process, the synthesis process is simple, the reaction yield is high, energy is saved, and the environment is protected; the two-step method is used for refining and purifying the product, the depth of the refining and the efficiency of the refining are high, large-scale production is suitable, the monopoly of foreign enterprises is broken, and the application has important significance.

The utility model relates to a compact integrated freeze dryer which is provided with a shell, a vacuum bin, a vacuum pump and a compressor are arranged in the shell, a freeze-drying chamber and a cold trap are arranged in the vacuum bin, the freeze-drying chamber is arranged on the upper portion of the cold trap and communicated with the cold trap, a heating device is arranged on a freeze-drying frame in the vacuum bin, and the compressor is connected with a condensation pipe in the cold trap. The vacuum pump is connected with the vacuum bin. According to the utility model, a novel heating structure is adopted, the heating device is directly arranged at the lower part of the freeze-drying rack layer plate, materials on the freeze-drying rack are directly heated, the space is effectively saved, the loss of heat transfer is reduced, the structure of the existing freeze-drying machine is integrated, the internal structure depends on the vacuum bin design, and the cold trap is arranged at the lower part of the freeze-drying chamber, so that the heat transfer efficiency is improved. And the vacuum pump and the compressor are arranged on the bottom plate at the side part of the vacuum bin, so that the whole freeze dryer is closer to a square suitable for household use, and the size of the freeze dryer is greatly reduced.

The invention relates to the field of vacuum technology and low-temperature engineering, and discloses a low-temperature cold trap device and a vacuum system.The low-temperature cold trap device comprises a shell provided with an extraction opening; the adapter piece is communicated with the shell and is provided with a channel which can be opened or closed; the condensation assembly is arranged in the shell; the cold source is arranged on the shell and exchanges heat with the condensation assembly; the driving mechanism is arranged on the shell and used for driving the condensation assembly to enter and exit from the shell along the channel. The driving mechanism drives the condensation assembly to enter and exit from the shell along the channel, the low-temperature cold trap device can be arranged in the air exhaust pipeline to achieve high cold trap working efficiency during working, the cold trap can be moved out of the air exhaust pipeline during regeneration, shutdown of the air exhaust pipeline is avoided, air exhaust work is not affected, and the service life of the low-temperature cold trap device is prolonged. Therefore, the air exhaust efficiency and the air exhaust performance of the air exhaust pipeline can be ensured.

The application belongs to the technical field of salt solution drying, and particularly relates to a continuous evaporation and drying device for triflic acid salt solution. The device comprises a raw material tank, a feeding pump, a recovery cold trap, a vacuum pump, a cyclone separator, two-stage thin film evaporators, a screw conveyor, a material bin and a heat conducting oil furnace, and a continuous material flow path, a gas phase condensation recovery path and a circulating heating path are formed through pipelines. The scheme limits the operation parameters of the two-stage evaporators, such as the operating pressure, temperature and scraper rotating speed, and clearly defines the heat exchange feeding design of the recovery cold trap, the gas velocity of the cyclone separator and the powder backflow structure, is suitable for multiple solvent systems and various corrosion-resistant materials, and the material bin adopts a closed structure with nitrogen protection, and multiple bins can be connected in parallel to switch feeding. The application realizes continuous drying of triflic acid salt, improves production efficiency, product quality and yield, reduces energy consumption and improves solvent recovery rate through waste heat recovery.

1. The name of the design product: mass spectrometer cold trap. 2. The use of the design product: to provide an ultra-low temperature environment for the container, for material capture and enrichment. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The present invention provides a trifluoromethyl fluoroformate synthesis system and method. The trifluoromethyl fluoroformate synthesis system comprises a reaction unit, a heat exchange unit, a cold trap unit, a low-temperature rectification unit, and a recycling unit that are arranged in sequence. The reaction unit comprises a feed pipe, a discharge pipe, and a reactor. The discharge pipe is communicated with the cold trap unit by means of a third heat exchange tube, the cold trap unit is communicated with the low-temperature rectification unit, and the low-temperature rectification unit is communicated with the recycling unit. The heat exchange unit comprises a heat exchanger. The low-temperature rectification unit comprises a rectifying section and a stripping section. The recycling unit comprises a first circulating pipe and a second circulating pipe that are used for recycling a product from the rectifying section, wherein the first circulating pipe and the second circulating pipe are respectively communicated with the feed pipe by means of a second heat exchange tube and a first heat exchange tube, and the first heat exchange tube, the second heat exchange tube, and the third heat exchange tube all pass through the heat exchanger. By recycling the product from the rectifying section, the present invention reduces the loss of raw materials, and improves the product yield.

This invention discloses a simulation device for hydrothermal reactions under vacuum chamber dehydration accidents, belonging to the field of vacuum chamber accident simulation technology. The device includes a quartz tube with its opening facing upwards, an induction heating coil wound around its exterior, and a detachably sealed end of the quartz tube via a flange assembly. A water injection pipe extending from the lower end of the flange assembly to above a metal sample is connected to a storage tank. The flange assembly also has an outlet pipe communicating with the inner cavity of the quartz tube, which is connected to a mass spectrometer analysis unit via a liquid nitrogen cold trap. The middle section of the outlet pipe is connected to a vacuum pumping unit via a vacuum pumping pipe. A monitoring unit is located on one side of the quartz tube. This invention integrates vacuum acquisition, induction heating, controllable coolant injection, in-situ monitoring, and online analysis of gaseous products, achieving comprehensive simulation of the high-temperature metal-coolant hydrothermal reaction process under vacuum chamber dehydration accidents. It is suitable for preliminary research on vacuum chamber dehydration accidents in fusion devices, high-temperature high-vacuum furnaces, and other similar applications.

The utility model relates to the technical field of test and measurement, and discloses a semi-permeable membrane sample gas selector for greenhouse gas on-line monitoring, which comprises a low-temperature cold trap device and an eight-port gas rotary valve, the low-temperature cold trap device comprises a low-temperature cold trap body, a plurality of gas sample inlets are arranged at the rear end of a shell of the low-temperature cold trap device, and the eight-port gas rotary valve is arranged in the shell of the low-temperature cold trap device. A plurality of input interfaces and output interfaces are arranged on the eight-port gas rotary valve, the plurality of input interfaces can be communicated with the plurality of gas sample injection ports one by one through guide pipes, and a filter is arranged at one end, far away from the eight-port gas rotary valve, of each guide pipe. According to the semi-permeable membrane sample gas selector provided by the utility model, except for the semi-permeable membrane tube of a finished product assembly, the used conduits all adopt 1 / 8 inch silanization stainless steel tubes, so that the gas replacement speed in structures such as a low-temperature cold trap body and an eight-port gas rotary valve is increased, the gas adsorption is reduced, and the quick response of gas output is realized.

This invention provides a gas ion source preparation device for multi-form samples, comprising a multi-form sample introduction device, a first separation cold trap for separating water vapor, a second separation cold trap for separating carbon dioxide, a quantitative cold trap, and a collection cold trap. One end of the first separation cold trap is connected to the multi-form sample introduction device, the other end of the first separation cold trap is connected to one end of the second separation cold trap, the other end of the second separation cold trap is connected to one end of the quantitative cold trap, the other end of the quantitative cold trap is connected to one end of the collection cold trap, and the other end of the collection cold trap is connected to an ion source. The temperature of the first separation cold trap is lower than the boiling point of water vapor, and the temperature of the second separation cold trap is lower than the boiling point of carbon dioxide but higher than the boiling point of nitrogen. A tail gas outlet is connected between the collection cold trap and the quantitative cold trap. This invention combines low-temperature distillation and multi-form carbon redox technology to achieve the collection and purification of different forms of carbon in solid and gaseous samples.

The present application relates to the technical field of cold trap, and particularly relates to a high-efficiency diffusion pump cold trap, which comprises a cold trap shell, the cold trap shell comprises a cold trap shell body and a cold trap cover body; further comprising a condensing assembly, the condensing assembly comprises a cylindrical main condensing cavity, a plurality of sub-condensing cavities and a coil condensing pipe; the inside of the main condensing cavity forms a main condensing cavity; one end of the sub-condensing cavity extends into the main condensing cavity along the radial direction of the main condensing cavity to form a condensing connecting part, and the other end of the sub-condensing cavity extends out of the condensing diffusion part along the radial direction of the main condensing cavity; the inside of the sub-condensing cavity forms a sub-condensing cavity; the plurality of sub-condensing cavities are respectively communicated with the main condensing cavity; the coil condensing pipe is in contact with the inner wall of the main condensing cavity; and the coil condensing pipe is also respectively in contact with the condensing connecting parts of the plurality of sub-condensing cavities. The present application can efficiently condense the oil vapor and other gas molecules generated by the diffusion pump, and significantly improves the efficiency of the oil vapor trapping, adsorbing and condensing.

The application relates to the field of vacuum obtaining devices, and discloses an ultra-low-temperature water vapor trapping pump device integrating liquid storage and throttling, which comprises a compressor, an oil separator, a water condenser, a drying filter, a regenerator, multiple heat exchangers and a cold trap. The device further comprises at least one throttling module and a liquid storage module. One end of each throttling module is connected with a gas outlet of one of the heat exchangers, and the other end is connected with a heat exchange interface of the heat exchanger or the rest of the heat exchangers. The throttling module is used for separating and purifying high-pressure liquid refrigerant delivered by a main liquid path, and controllably adjusting flow circulation to match the load demand of the main liquid path in real time. The liquid outlet of the liquid storage module is connected with the main liquid path before or after the regenerator, the liquid inlet is connected with the downstream of the water condenser or the drying filter, and the liquid storage module is used for recoverably supplying liquid refrigerant to the main liquid path.

The utility model discloses a purification device for producing ultrapure arsine, and relates to the technical field of ultrapure arsine purification devices, the purification device comprises an arsine gas generation reaction kettle, the top end of one side of the arsine gas generation reaction kettle is communicated with a first gas transmission pipe, and the top end of one side of the first gas transmission pipe is communicated with a condenser. A material for producing arsine gas is placed in an arsine gas generation reaction kettle, arsine is generated through heating, gas enters a condenser through a first gas transmission pipe, the arsine gas can be cooled, water vapor can be condensed, entangled water vapor can be reduced, and the production efficiency of arsine is improved. Gas enters the first cold trap and the second cold trap to be further treated, through precise distillation in the first rectifying tower and the second rectifying tower, impurities in the gas are finally adsorbed through the adsorption box, ultra-pure gas is generated, and ultra-pure arsine gas can be collected through the gas storage tank.

The application relates to the fine chemical technology field, and particularly discloses a preparation method of electronic-grade ammonia water. The preparation method comprises the following steps: pyrolyzing urea as raw material, purifying mixed gas with lime, and obtaining primary ammonia gas through gradient separation of a plurality of cold traps; after the primary ammonia gas is deeply removed of trace organic matters and oil mist through an adsorption tower filled with CD@MCM-41, the primary ammonia gas is introduced into an amino-functionalized ionic liquid for absorption, and an ammonia-rich solution is obtained; the ammonia-rich solution is pumped into an F-DLC-coated falling film crystallizer for crystallization, sweating treatment and desorption, and high-purity ammonia gas is obtained; finally, the high-purity ammonia gas is dissolved in ultrapure water, and terminal purification treatment is carried out through a PEI-g-NF membrane grafted with a polyamine group, so that electronic-grade ammonia water meeting the SEMI G5 standard is obtained. The process flow of the application is fully closed, no organic solvent is left, the removal rates of metal ions and TOC are high, and the application has high industrial application value.

The application belongs to the field of advanced material technology, and relates to a method for preparing large-size room-temperature ferromagnetic graphene based on stress engineering, ferromagnetic graphene and application thereof. The method is as follows: 3 or more layers of copper-based graphene are folded densely by a mechanical method, and then at least 10 cycles of rapid cooling and heating are performed, and the ferromagnetic graphene is obtained; the process of rapid cooling and heating is as follows: the copper-based graphene after being folded densely is placed in a cold trap environment of 70-120K for cooling, and then is rapidly placed in an environment of room temperature and above for heating. Through the pretreatment method of mechanical folding and continuous rapid cooling and heating, strong and tough ferromagnetic property is observed in large-size graphene (centimeter scale), and the Curie temperature is 100K to room temperature and above. The ferromagnetic graphene in the application is applied to the fields of flexible electronic devices and wearable artificial intelligence.

The invention discloses an ultra-low temperature vacuum system of a Tokamak or star imitator adaptive to nuclear fusion, and relates to the technical field of nuclear fusion equipment, the ultra-low temperature vacuum system comprises a vacuum chamber, a plasma state sensor is embedded in the inner wall of the vacuum chamber, the outer end of the vacuum chamber is provided with a sealing interface, the outer end of the sealing interface is provided with a primary filter, and the primary filter is provided with a secondary filter. A getter bin is installed at the outer end of the primary filter, an auxiliary pump is installed at the outer end of the getter bin, a stop valve is installed at the outer end of the auxiliary pump, a cold trap is installed at the outer end of the stop valve, the side wall of the cold trap is connected with a refrigerating machine through a pipeline, and a main pump is installed at the outer end of the cold trap. By arranging a series of structures, the pain point of decoupling of a traditional system and plasma operation is thoroughly solved, all the components cooperate to guarantee the ultrahigh vacuum environment, interference of impurity gas on plasma constraint is greatly reduced, and the stability and success rate of a nuclear fusion experiment are remarkably improved.

The invention discloses a helium isotope volume ratio concentration measuring device and method, and mainly solves the technical problems of high detection limit, high detection cost, high configuration requirement and the like in the prior art. The measuring device comprises a main pipeline, a high-temperature purification device, a low-temperature cold trap device, a normal-temperature purification device, a mass spectrometer, a pressure gauge, a first vacuum gauge, a second vacuum gauge, a first molecular pump set and a second molecular pump set, wherein a first closed volume is formed among the first valve, the second valve and the pressure gauge; a second closed volume is formed among the second valve, the third valve, the fourth valve and the first vacuum gauge; the high-temperature purification device, the second vacuum gauge, the low-temperature cold trap device and the second molecular pump set are respectively connected with the main pipeline through corresponding valves; the normal-temperature purification device is positioned between the tenth valve and the eleventh valve; and the mass spectrometer is connected with the tail end of the main pipeline through an eleventh valve. The detection device can realize lower detection limit and higher measurement sensitivity and measurement precision.

The utility model discloses a cooling device for a high-vacuum heat treatment furnace. The cooling device comprises a cold trap and a main valve, one end of the cold trap is connected with the closed cavity of the high-vacuum heat treatment furnace through the main valve, and the other end of the cold trap is connected with the oil diffusion pump, so that the closed cavity of the high-vacuum heat treatment furnace can be communicated with the oil diffusion pump through the main valve via the cold trap; and a workpiece is arranged in the closed cavity of the high-vacuum heat treatment furnace. The utility model relates to the technical field of vacuum heat treatment furnaces, and can solve the problem that no device for preventing the oil return phenomenon of a diffusion pump of a high-vacuum heat treatment furnace exists in the prior art.

The utility model relates to the technical field of material collection and condensation, and discloses a collection cold trap. The collecting cold trap comprises a shell, a first cooling medium layer, a material collecting layer, a second cooling medium layer and a heat preservation shielding layer are defined in the shell, the material collecting layer is used for collecting materials, and the first cooling medium layer and the second cooling medium layer are used for introducing cooling media; the heat preservation shielding layer, the second cooling medium layer, the material collecting layer and the first cooling medium layer are sequentially arranged in a sleeved mode from outside to inside. In this way, the collecting cold trap can be rapidly heated and cooled within a large temperature range, and the temperature of the material collecting layer can be accurately regulated and controlled by adjusting the temperature of the two cooling medium layers.

The application relates to the field of graphene oxide drying technology and discloses an electric auxiliary heating vacuum freeze drying graphene oxide equipment, which comprises a vacuum drying box, a vacuum pump box and a compressor box, the vacuum pump box and the compressor box are respectively provided with vacuumizing assemblies and refrigeration compressor groups, the vacuum drying box comprises a drying bin and a cold trap bin, the drying bin and the cold trap bin are communicated and air circulation is realized by installing a fan on adjacent partition plates, the inside of the drying bin further comprises a heating assembly and a graphene placing rack. The electric auxiliary heating vacuum drying can greatly shorten the drying time, the drying time can be shortened by 300%-400%, the electric auxiliary heating system is independent of the vacuum drying main system, the electric auxiliary heating system is flexible and convenient, the electric auxiliary heating temperature can be adjusted according to the drying condition, a heat insulation layer is arranged to prevent heat from being transferred to the vacuumizing assemblies and the refrigeration compressor groups, so that the system is prevented from working under over-temperature, and the graphene placing tray is more convenient to take through the setting of a discharging assembly.

The utility model discloses a food freeze-drying device, which relates to the field of food processing machinery, and comprises a box body, a refrigeration mechanism and a freeze-drying barrel arranged in the box body, the freeze-drying barrel is provided with a freeze-drying cavity, an inner barrel and a thermal insulation layer attached to the side wall of the inner barrel, and a material placing assembly used for placing materials to be processed is arranged in the freeze-drying cavity. The refrigerating mechanism comprises a cold trap arranged between the side wall of the inner barrel and the heat preservation layer, and the cold trap comprises a refrigerating pipe arranged around the side wall of the inner barrel. Due to the fact that the cold trap is arranged between the inner barrel and the heat preservation layer, the cold trap and the freeze-drying cavity are integrally arranged, during freeze-drying, moisture sublimated by materials can be captured by the cold trap and condensed on the inner wall of the freeze-drying cavity, freeze-drying dehydration is achieved, due to the fact that the cold trap and the freeze-drying cavity are integrally arranged, set functions can be achieved, the device can be simplified, and the device is high in integration degree, small in size and convenient to use. And the modern household space requirement is met, so that the household use requirement is met.

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 utility model discloses an automatic enrichment device for ultra-trace gas, which relates to the technical field of gas analysis and comprises a first cold trap enrichment module, a second cold trap enrichment module, a gas carrying bottle, a chromatographic instrument, a controller and a plurality of three-way valves which are all mounted on a main body frame, the carrier gas bottle is connected with the two cold trap enrichment modules through a three-way valve I, and the chromatograph is connected with the two cold trap enrichment modules through a three-way valve II; the two cold trap enrichment modules respectively comprise a gas sample introduction unit, a cold trap enrichment unit and a six-way valve, and share one controller; the gas sample introduction unit can remove gas impurities, the cold trap enrichment unit can efficiently enrich ultra-trace gas, the pressure sensor monitors the pressure of a cold trap in real time, and the flow regulating valve is triggered to regulate the flow rate when the pressure is abnormal; full-process automatic operation is achieved, and manual errors and pollution are avoided; the enrichment effect is remarkably improved through the double-cold-trap design; the gas dryer and the electromagnetic valve are matched to effectively remove impurities and guarantee the detection accuracy.