46results about "Material crystallisation" patented technology

The invention relates to the technical field of molten salt treatment, and discloses a molten salt recovery system based on a steel belt cooling granulator. The system comprises a molten salt physical property monitoring module, a viscosity modeling module, a cooling optimization module, a partition temperature control module, a phase change monitoring module, a dynamic adjustment module, a particle size analysis module, a quality grading module, a pneumatic conveying module and a waste heat recovery module. The progressive crystallization control of the molten salt particles is realized; a heat pipe type heat exchanger and an organic Rankine cycle system are integrated at the waste heat recovery end, so that comprehensive energy consumption is reduced; the environment regulation and control end monitors the workshop temperature and humidity in real time based on a dew point calculation model, and the long-term stability of hygroscopic fused salt particles is guaranteed. According to the method, four technical bottlenecks of out-of-control crystallization, energy waste, classification loss and environmental interference in fused salt recovery are overcome, and low-cost, high-purity and zero-waste fused salt resource recycling is realized.

The invention discloses a sandstone damage simulation experiment device and method based on a seepage-crystallization coupling effect, and belongs to the technical field of mechanical property testing of geotechnical materials. Aiming at the limitation that the seepage-crystallization coupling effect of sandstone in a complex geological environment cannot be effectively simulated in the prior art, the experimental device is designed. According to the device, through the design of a single opening in the bottom, a sample is axially fixed through an O-shaped ring sleeve, a seepage boundary is formed, after a solution with a preset concentration is injected, the seepage rate of the solution is controlled through pressurization of an air compressor, evaporative crystallization is accelerated in combination with directional heating and air supply at the bottom, and dynamic crystallization process simulation of salt in sandstone pores is achieved. The sandstone damage simulation method for realizing solution crystallization through controllable seepage is provided, and a scientific basis is provided for evaluating the durability of sandstone engineering. Through integrated design, precise control and dynamic observation, the experimental precision is remarkably improved, the application range is widened, and the device has important significance in promoting the development of sandstone damage mechanism research in the field of geotechnical engineering.

The present application provides a urine processing method and a urine testing system. The method comprises processing urine to obtain urinary sediment and supernatant, performing crystallization processing on the supernatant and making analysis to obtain supernatant-related parameters, and making comprehensive analysis through combination of the supernatant-related parameters with urinary sediment-related parameters and urine dry chemistry-related parameters. The system comprises a urine processing module configured to process urine to obtain urinary sediment and supernatant, and a supernatant analysis module configured to perform crystallization processing on the supernatant and make analysis to obtain supernatant-related parameters, and to make comprehensive analysis through combination of the supernatant-related parameters with the urinary sediment-related parameters and the urine dry chemistry-related parameters.

The invention relates to the technical field of metal material detection, in particular to a test method for evaluating the recrystallization completion degree of a steel material. The method comprises the following steps: dividing a to-be-detected steel plate into a plurality of blocky steel plate samples; preliminarily determining the range of the recrystallization temperature of the steel plate to be measured according to experience, setting a plurality of temperature gradients in the range, respectively heating a plurality of steel plate samples at different temperatures, carrying out heat preservation for a period of time, and then cooling to room temperature; grinding and polishing the cooled steel plate sample; putting the polished steel plate sample into an X-ray diffractometer sample table, and starting an X-ray diffractometer for scanning to obtain diffraction patterns of the steel plate sample at different temperatures; and judging the recrystallization completion degree of the steel plate sample according to the separation condition of the diffraction peaks K alpha1 and K alpha2 in the diffraction pattern. The method has the advantages of simple sample preparation and inspection methods, and results are representative and are basically not influenced by subjective effects of operators due to a large test area.

The invention discloses an experimental device and method for researching a wax precipitation rule in a porous medium in a near wellbore area, and belongs to the technical field of wax precipitation experiments.The experimental device comprises a wax deposition visualization model, a multi-stage temperature control module, a liquid injection and cleaning module, a confining pressure adjusting module, a back pressure control module, a product recovery module and an image acquisition module; a natural rock core slice with a pore throat structure is simulated through a wax deposition visual model, a multi-stage temperature control module is utilized to perform graded local heating to simulate complex temperature conditions of a stratum, confining pressure is provided through a confining pressure adjusting module, and model outlet pressure is adjusted through a back pressure control module to simulate flowing bottomhole pressure. Crude oil and cleaning fluid are injected into the liquid injection and cleaning module, and an oil displacement experiment and cleaning after the oil displacement experiment is completed. The image acquisition module and the visual clamping module are used for visually observing the wax precipitation process in the model, the wax crystal phase change process in the experiment process is analyzed, and the wax step-by-step precipitation law is represented through wax precipitation formulas of different parts of the model.

The invention relates to the technical field of propiconazole purification, in particular to a propiconazole purification device which comprises a purification tank, and the top end of the purification tank is fixedly communicated with a fixed cover; the detection mechanism comprises a semicircular lamp panel for emitting light, a photoresistor plate for detecting the light emitted by the semicircular lamp panel is arranged in the purification tank, and the detection mechanism is used for detecting the concentration and crystallization degree of a solution needing to be purified. A semicircular lamp panel in the detection mechanism emits light, the absorption and scattering of the light are influenced by the concentration of a solution, the intensity of light irradiated on the photosensitive resistor plate is changed, and then the resistance value of the photosensitive resistor plate is changed. When the solution concentration is high, the light intensity and the resistance value are large, the current passing through the electromagnet is large, the electromagnet is strong in magnetism, the permanent magnet on the sliding plate is repelled to slide upwards, the L-shaped conducting strip slides upwards on the resistor strip, the resistance of the sliding rheostat is reduced, the current passing through the self-adaptive adjusting loop is increased, and the stirring speed is increased.

The present invention discloses an experimental device and method for studying the wax deposition law in porous media in near-wellbore areas, belonging to the technical field of wax deposition experiments. The experimental device comprises a wax deposition visualization model, a multi-stage temperature control module, a liquid injection and cleaning module, a confining pressure adjustment module, a back pressure control module, a product recovery module and an image acquisition module; a natural core slice with a pore throat structure is simulated by a wax deposition visualization model, a multi-stage temperature control module is used to perform graded local heating to simulate complex formation temperature conditions, a confining pressure adjustment module is used to provide confining pressure, a back pressure control module is used to adjust the model outlet pressure to simulate bottom hole flow pressure, a liquid injection and cleaning module is used to inject crude oil and cleaning fluid therein, and an oil displacement experiment and subsequent cleaning are completed; an image acquisition module and a visualization clamping module are used to intuitively observe the wax deposition process in the model, and the wax crystal phase change process during the experiment is analyzed, and the wax deposition formulas of different parts of the model are used to characterize the step-by-step precipitation law of wax.

The application discloses an experimental device for simulating solidification structure of continuous casting billets, which comprises a crystallization unit and a temperature monitoring unit. The crystallization unit can enclose a crystallization cavity. A cooling channel is arranged in the water-cooled wall of the crystallization unit. The cooling channel is connected with a cooling medium source. The cooling intensity of the slab in the continuous casting production is simulated by controlling the temperature and flow rate of the cooling medium. The test element of the temperature monitoring unit can monitor the temperature of the cooling medium in the crystallization cavity in real time, so as to accurately restore the solidification process of the continuous casting billets. The application also discloses an experimental method for simulating solidification structure of continuous casting billets. The target unit is selected, and the cooling medium flow rate parameter is set to restore the change process of the cooling intensity of the surface of the continuous casting billets with time, and the heat flow density of the solidification process is analyzed. After the solidification is completed, the simulation unit is obtained, and the solidification structure of the simulation unit is analyzed. The application can accurately simulate the change process of the heat flow density of the surface of the slab in the continuous casting process, and provides convenience for the solidification structure research of the continuous casting billets.

The invention discloses a construction waste roadbed filler firmness test device, which belongs to the technical field of roadbed filler firmness test, and comprises an outer storage tube and an inner tube, wherein a hydrocyclone motor is arranged at the bottom of the outer storage tube, and a hydrocyclone assembly for stirring sodium sulfate solution is connected to the output end of the hydrocyclone motor through a driving shaft; a liquid discharge plate is arranged below the hydrocyclone assembly. The invention can quickly realize the repeated immersion of roadbed filler fragments in sodium sulfate solution through the arrangement of a liquid discharge hopper and a convex plunger, and allow the separation and mixing of the solution to be carried out autonomously, thereby reducing the complicated operation of artificially replacing equipment, and at the same time, the arrangement of an impact impeller and a spherical nozzle can press the sodium sulfate solution into and penetrate into the internal space of the accumulated roadbed fragments, so that the internal surface of the construction waste fragments with larger particle sizes can be more quickly in full contact with the sodium sulfate solution, which is convenient for the sodium sulfate to crystallize and expand faster on all surfaces of the roadbed fragments.

This invention relates to the field of fault early warning technology and discloses a fault early warning system for desalination in saline soil areas based on multi-source data. The system includes a preprocessing module, a prediction module, a working condition monitoring module, a display module, and an optional fault location module for extended functions. The system predicts crystallization risk by monitoring multi-source parameters such as temperature, flow rate, concentration, and pressure head within the desalination pipe, and issues anomaly warnings before a fault occurs. This overcomes the shortcomings of existing technologies that cannot effectively monitor crystallization risk within the desalination pipe, and is of great significance for ensuring the reliable operation of the desalination system and the long-term stability of saline soil subgrades.

A temperature testing system for hydrate nucleation and phase transition based on infrared imaging is provided and includes a gas-liquid supplying device, a refrigeration device, an infrared imaging device, a hydrate generation device, and a data acquisition device. The gas-liquid supplying device is configured to provide a gas and a liquid required for synthetizing a hydrate. The refrigeration device is configured to provide a temperature environment required for synthetizing the hydrate. The infrared imaging device is configured to in-situ measure temperature changes caused during a formation of the hydrate. The hydrate generation device is configured to provide a visual growth environment for nucleation and phase transition of the hydrate. The data acquisition device is configured to collect a temperature, a system pressure, and infrared imaging data from the hydrate generation device. The temperature testing system can accurately determine the temperature evolution during the nucleation, formation, and decomposition of the hydrate.

A method for monitoring a crystallizer in a high-temperature environment based on an improved BOCDA comprises the following steps: after a sensing optical fiber is laid on the surface of the crystallizer in a two-dimensional plane mode, the sensing optical fiber and the BOCDA arranged in a normal-temperature environment are respectively connected through a dispersion compensation optical fiber (DCF); the optical fiber Brillouin frequency shift (BFS) on a specific section distance in the sensing optical fiber is obtained by setting modulation frequency parameters, and then temperature information of the surface of the crystallizer is obtained through calculation. According to the invention, the sensing optical fiber with a heat-resistant coating layer is combined with the dispersion compensation optical fiber (DCF), and the BFS of the sensing optical fiber is remotely measured by utilizing the property that the BFS of the two optical fibers is greatly different, so that the accurate temperature measurement in a high-temperature environment is realized.

The invention belongs to the technical field of adipic acid production equipment, and particularly relates to a crude adipic acid crystallization point detection system which comprises a crystallization point detection tank, a crude adipic acid solution storage tank, a crude adipic acid solution delivery pump, a feeding three-way control electromagnetic valve, a cooling water recovery tank and a crystallization point automatic detection time sequence controller. The crystallization point automatic detection time sequence controller is provided with a main signal connecting line; a thermometer is arranged outside the crystallization point detection tank; an electrode type liquid level alarm controller is also arranged at the top end of the crystallization point detection tank; a first discharge pipe is arranged at the bottom end of the crystallization point detection tank. According to the system, the structure of the crystallization point detection tank is improved, and the automatic feeding detection time sequence is optimized, so that the continuous automatic detection and recording of the crystallization point of the crude adipic acid are realized, reliable data support is provided for the production and purification operation of the crude adipic acid, and the stable operation of the device is ensured.

The present invention discloses an experimental device and method for detecting the crystallization characteristics of NH4Cl in a U-shaped heat exchange tube bundle. The main material of the heat exchange tube bundle part is organic glass, and the outside is covered with an organic glass sleeve. A deposition probe is inserted into the bend of the main material. The bundle inlet of the heat exchange tube bundle part is connected to the material inlet part, and the bundle outlet of the heat exchange tube bundle part is connected to the material outlet part. The organic glass sleeve is provided with an inlet and an outlet. The inlet and outlet of the organic glass sleeve are connected to the cooling system to form a circulation loop; the heat flux density is calculated by the temperature difference between the inner and outer surfaces of the deposition probe to characterize the crystallization solution of NH4Cl salt, and the crystallization conditions of NH4Cl salt at different places of the bend of the heat exchange tube bundle are obtained. The present invention is simple to operate, and the phenomenon is obvious and visible, and can be used to solve the problem of ammonium salt crystallization deposition corrosion in U-shaped heat exchangers in the current petrochemical industry.

The present application provides a urine processing method and a urine testing system. The method comprises processing urine to obtain urinary sediment and supernatant, performing crystallization processing on the supernatant and making analysis to obtain supernatant-related parameters, and making comprehensive analysis through combination of the supernatant-related parameters with urinary sediment-related parameters and urine dry chemistry-related parameters. The system comprises a urine processing module configured to process urine to obtain urinary sediment and supernatant, and a supernatant analysis module configured to perform crystallization processing on the supernatant and make analysis to obtain supernatant-related parameters, and to make comprehensive analysis through combination of the supernatant-related parameters with the urinary sediment-related parameters and the urine dry chemistry-related parameters.

The invention relates to the technical field of plasma freezing process parameter detection, in particular to a plasma freezing process parameter detection method and device.The plasma freezing process parameter detection device comprises an equipment base, a simulated plasma barrel is fixedly arranged on the equipment base, a shaking base is rotationally connected to the equipment base, and a flushing pipe is rotationally connected to the shaking base; the outer wall of one side of the flushing pipe is fixedly connected with the scrubbing mechanism, the simulated plasma bag is placed on the equipment base, the parameter collecting mechanism is installed on the outer side of the simulated plasma bag, and the control panel is installed on the equipment base. The plasma freezing parameter and the plasma instant freezer parameter are calibrated under the condition of simulating the conventional state of plasma freezing, the device has a low-temperature counting function, it is ensured that the plasma simulation body can simulate the plasma physical property, the use is convenient, the result is reliable, calculation is automatic, meanwhile, the accuracy and reliability of the plasma freezing process parameter can be comprehensively evaluated, and the operation is convenient. And a data support is provided for ensuring the plasma cryopreservation quality and carrying out related research on plasma.

The present invention discloses an experimental device and experimental method for dynamic wax deposition or wax removal, which specifically relates to the technical field of oil and gas field development, including an experimental chamber, a displacement module, a controller, a pressure regulating module for regulating the pressure in the experimental chamber, a temperature control device for regulating the temperature in the experimental chamber, and an oil pumping device; the displacement module includes a liquid storage device and a driving device for transporting the substance in the liquid storage device to the experimental chamber; during the wax deposition experiment, a clean wellbore or a clean formation porous medium is placed in the experimental chamber, the liquid storage device stores an oil-water mixture, and the oil pumping device is used to extract the oil-water mixture in the central through hole of the clean wellbore; during the wax removal experiment, a waxed wellbore or a waxed formation porous medium is placed in the experimental chamber, and the liquid storage device stores a wax remover. The present invention can deeply understand the wax deposition rules and influencing factors of wellbores and formation porous media, evaluate the wax removal effects of different wax removers, optimize the oilfield mining process, improve recovery, and reduce costs.

The invention provides an ice crystal particle collecting device and method for an ice crystal parameter calibration test. The device comprises a liquid nitrogen storage tank, a lubricating oil tank, a heat preservation refrigeration pipe, a lubricating oil collecting tank with ice crystals and a lubricating oil flow curtain. Wherein the lubricating oil tank provides lubricating oil for the heat preservation refrigeration pipe, and the liquid nitrogen storage tank provides liquid nitrogen for the heat preservation refrigeration pipe so as to cool the lubricating oil. Lubricating oil on the lubricating oil flow curtain spreads to form an oil film flowing from top to bottom, and ice crystal particles can be conveniently carried to flow. The ice-crystal-containing lubricating oil collecting box is used for collecting ice crystal particles, and the ice crystal particles are maintained not to melt with the help of liquid nitrogen. According to the method, the ice crystal particles are conveyed into the ice-crystal-containing lubricating oil collecting box by means of flowing lubricating oil with the temperature lower than the freezing point, it is ensured that the ice crystal particles are collected in the non-melting state, and therefore the morphology of the collected ice crystal particles can be observed conveniently. Meanwhile, some basic parameters can be obtained through a simple measurement mode, the concentration of the ice crystal cloud field can be calculated, and the difficulty and cost of ice crystal cloud field measurement are reduced.

Provided is a multi-scale test device for crystallization performance of high-temperature melts, including a furnace body, an atmosphere control system, an optical path system, a temperature control system and a control display system. The furnace body includes furnace body includes a cavity, a thermocouple wire, a hot wire fixing block, a hot wire welding electrode, a reflecting surface, an air inlet pipe and an air outlet pipe. The thermocouple wire, the hot wire fixing block, the hot wire welding electrode and the reflecting surface are located in the cavity, the air inlet pipe and the air outlet pipe are in communication with the cavity. The thermocouple wire is connected with the hot wire welding electrode to form a heating wire structure onto which a sample is placed, and a center of the heating wire structure is located directly above the reflecting surface.

A method for measuring the physical properties of liquid / solid electrolytes, belonging to the field of nonferrous metallurgy, specifically discloses a finite element analysis-assisted thermal analysis method to obtain the thermal conductivity, primary crystallization temperature, electrolyte composition, and latent heat of phase transition of liquid / solid electrolytes. The method includes the following steps: measuring the thermal analysis curve of a liquid molten salt sample during cooling using a sensor; simulating the behavior of the thermal analysis curve using a sensor physical model established by finite element analysis; and comparing and analyzing the numerical thermal analysis curve and the measured thermal analysis curve to obtain the corresponding liquid / solid thermal conductivity, primary crystallization temperature, electrolyte composition, and latent heat of phase transition of the molten salt system. The method described in this invention can rapidly obtain the thermal conductivity, primary crystallization temperature, molten salt composition, and latent heat of phase transition of solid / liquid inorganic salts and multi-component mixtures, enabling online measurement of relevant physical properties of liquid molten salts and solid electrolytes, and possesses practicality and economy.

The invention discloses a liquid ammonium nitrate quality detection device and a detection method thereof.The liquid ammonium nitrate quality detection device comprises a sampling measurement assembly, a sampling displacement assembly used for conveying the sampling measurement assembly to a sampling opening and two portal frames matched with a liquid ammonium nitrate tank car in width and height, and the two portal frames are arranged in the direction perpendicular to the length direction of the liquid ammonium nitrate tank car; the sampling displacement assembly is connected with the two portal frames, the sampling measurement assembly is connected with the sampling displacement assembly, and a positioning camera of which the shooting range is not overlapped with the initial positions of the sampling measurement assembly and the sampling displacement assembly is arranged in the middle between the two portal frames. The sampling hole is automatically positioned through the positioning camera, the sampling and measuring assembly reaches the position where the sampling hole is located through the two-axis module, meanwhile, the Z-axis module is driven to make the sampling and measuring assembly make contact with liquid ammonium nitrate for sampling, and the temperature and density value information of a crystallization point of the liquid ammonium nitrate is automatically measured.

The invention relates to a wind tunnel-based pipeline surface frosting analysis test system and method, relates to the technical field of wind tunnel tests, and aims to research the surface frosting phenomenon of a pipeline and obtain the characteristics of the pipeline surface frosting rate. According to the scheme, the first view field rectangle and the second view field rectangle of the outer surface of the internally tangent pipeline can be obtained in real time based on the first image collecting device, the second image collecting device, the third image collecting device and the fourth image collecting device; and obtaining an octagon of which each edge is tangent to the outer surface of the pipeline based on the first field-of-view rectangle and the second field-of-view rectangle, calculating the length of each edge in the octagon, and calculating the sectional area and volume of the pipeline based on the length of each edge in the octagon so as to meet the analysis requirement of frost on the surface of the pipeline. On the basis, the surface frosting phenomenon of the pipeline can be researched, and the surface frosting rate of the pipeline can be obtained.

This invention relates to a wind tunnel-based system and method for analyzing pipe surface frost, belonging to the field of wind tunnel testing technology, to study the frost phenomenon on pipe surfaces and obtain the characteristics of the frost rate. In this application, a first and second field-of-view rectangle tangent to the outer surface of the pipe can be acquired in real time using a first, second, third, and fourth image acquisition device. Based on the first and second field-of-view rectangles, an octagon with each side tangent to the outer surface of the pipe is obtained, and the length of each side of the octagon is calculated. Then, the cross-sectional area and volume of the pipe are calculated based on the length of each side of the octagon to meet the analysis needs of pipe surface frost. Based on this, the frost phenomenon on the pipe surface can be studied, and the frost rate of the pipe surface can be obtained.

The present invention discloses a method for predicting the morphology of spherulites after crystallization based on DSC test results, comprising selecting representative cubic volume units, uniformly dividing the cubic unit grid into pixel point types, establishing a three-dimensional isothermal crystallization process crystal growth model of a semi-crystalline resin using a cellular automaton method, and inputting multiple sets of different parameters G and I based on the model to obtain the corresponding spherulite semi-crystallization time t. 0.5 The parameter ln(k) and the characteristic parameter t in the Avrami model of crystallization kinetics c The functional relationship between them is used to construct the average radius of the spherulites based on the multiple sets of different parameters G and I input above. <r>The functional relationship between the characteristic parameter Lc and the spherulite morphology after crystallization of semi-crystalline resin can be obtained by performing a simple DSC test on the material. 0.5 and the value of ln(k), the spherulite morphology after crystallization can be directly predicted through the obtained functional relationship, thus reducing the experimental time.< / r>

The invention discloses a method for testing the supercooling degree of nano-liter liquid drops by a differential scanning calorimetry. The method comprises the following steps: taking a liquid sample with the mass of more than 0.2 mg or the volume of more than 0.2 mu L, then placing the liquid sample in a crucible to form a plurality of sub-droplets, then carrying out DSC test to obtain the phase change enthalpy of the plurality of sub-droplets, and calculating to obtain the degree of supercooling of the plurality of sub-droplets; wherein the volume of at least one sub-droplet is less than 0.1 mu L. The method provided by the invention can accurately measure the freezing point temperature of the liquid drop below 50 nanoliters and even 5 nanoliters, widens the measurement range of the quantitative relationship between the liquid drop size and the supercooling behavior, and lays a technical foundation for researching the liquid coating dominated liquid drop phase change behavior.

The invention belongs to the technical field of tunnel waterproof and drainage crystallization, and discloses a test device for the crystallization influence of a waterproof and drainage plate on a tunnel waterproof and drainage system. The test device for the crystallization influence of the waterproof and drainage plate on the tunnel waterproof and drainage system comprises a high-ground-temperature tunnel waterproof and drainage system crystallization model, a pushing system and a waterproof and drainage plate mounting system. The pushing system is located at the rear end of the crystallization model of the waterproof and drainage system of the high-ground-temperature tunnel; the crystallization model of the waterproof and drainage system of the high-ground-temperature tunnel comprises a primary support model and a secondary lining model located in the primary support model, a bottom sliding rail is arranged between the secondary lining model and the primary support model, and a bottom strip-shaped electromagnetic block is fixed to the bottom sliding rail; a top sliding rail and a top strip-shaped electromagnetic block fixed to the top sliding rail are fixed between the secondary lining model and the primary support model.

The invention relates to a carbon crystallization defect treatment technology in carbon recovery, and aims to improve the production efficiency and avoid the carbon crystallization defect. According to a plurality of historical production cycle production reports of carbon recovery, obtaining abnormal data of carbon crystal defects and integrating the abnormal data into a defect comparison table; in the current production cycle, carbon crystal growth data are monitored in real time, and abnormal growth data are identified and integrated into a predicted abnormal group by constructing a two-dimensional coordinate system, setting a reference line and an early warning line and analyzing a production change curve; performing normalization, time sequence feature extraction and other processing on the production data on the super early warning curve, constructing a multivariable feature vector, selecting an LSTM architecture time sequence model, and training a large model by using historical sample data; the trained large model is used for predicting the carbon crystal defects in the current production cycle, whether the defects occur or not is judged according to comparison between the prediction probability and a threshold value, if yes, an alarm is generated, and technicians analyze reasons and intervene according to the alarm, so that the defects are effectively avoided, and the production efficiency and quality are improved.

The invention discloses a multi-channel crystallization process rapid screening method combined with microflow imaging analysis, which comprises the following steps: S1, lifting an upper sealing cover, putting into six crystallization glass beakers, and adding raw materials and solvents into the respective beakers; s2, lowering an upper sealing cover, connecting external circulation of a high-low temperature circulator to a temperature control tank, starting a magnetic stirrer and temperature control through program control, and starting dissolution; s3, after dissolution is completed, cooling crystallization is achieved by reducing the temperature or solvent-out crystallization is achieved by adding a poor solvent into a feeding opening in the upper portion; and S4, after the crystals are separated out, starting an automatic sampling program, and carrying out wet particle size and particle shape detection on the crystal recrystallization sample of each channel to obtain morphology results under different experimental conditions. According to the invention, real-time monitoring of particle morphology in a wet environment can be realized, disturbance of the whole process to a crystallization system is minimum, real'lossless' monitoring is realized, and the method has the advantages of high time resolution, resource saving and the like.

The invention provides flow and particle size adjustable ice crystal cloud field construction equipment and method. The equipment comprises a liquid nitrogen supply mechanism, an ice crystal grinding mechanism, an ice crystal particle size screening mechanism and an ice crystal particle conveying mechanism. The liquid nitrogen supply mechanism is responsible for supplying low-temperature nitrogen to ensure that the whole system is in a low-temperature state; the ice crystal grinding mechanism is responsible for providing crushed ice; the ice crystal particle size screening mechanism is responsible for screening out ice crystals of which the particle sizes meet the requirements of an ice crystal cloud field from the crushed ice; the ice crystal particle conveying mechanism is responsible for blowing ice crystals to form a cloud field. Through cooperation of all the mechanisms, the ice crystal particles meeting the standard particle size (50-200 microns) are successfully obtained, the ice crystal particles meeting the MVD requirement of an ice crystal cloud field are accurately screened out, and the ice crystal particles are quantitatively and stably conveyed to a downstream test piece. Meanwhile, the particle size range and the supply amount of the ice crystals are adjustable, so that an ice crystal cloud field which meets the FAR-25 requirement and is controllable in concentration and particle size distribution can be formed.

The present application provides a urine processing method and a urine testing system. The method comprises processing urine to obtain urinary sediment and supernatant, performing crystallization processing on the supernatant and making analysis to obtain supernatant-related parameters, and making comprehensive analysis through combination of the supernatant-related parameters with urinary sediment-related parameters and urine dry chemistry-related parameters. The system comprises a urine processing module configured to process urine to obtain urinary sediment and supernatant, and a supernatant analysis module configured to perform crystallization processing on the supernatant and make analysis to obtain supernatant-related parameters, and to make comprehensive analysis through combination of the supernatant-related parameters with the urinary sediment-related parameters and the urine dry chemistry-related parameters.