20 results about "Mass exchange" patented technology

The embodiment of the invention relates to the field of cooling devices of pressure vessels, in particular to an oxygen control device, a lead-bismuth reactor and a method for adjusting the oxygen content of lead-bismuth alloy in the reactor. According to the oxygen control device provided by the embodiment of the invention, the oxygen content data of the lead-bismuth alloy in the container is measured and obtained in real time by arranging the measuring piece and the control assembly, and then the oxygen content level in the container is adjusted in real time by utilizing the deoxygenation mass exchanger and the oxygen release mass exchanger; therefore, the oxygen concentration in the lead-bismuth alloy is accurately maintained in a preset range, so that stable operation of a cooling system is ensured; the closed space is formed among the container, the oxygen removal mass exchanger and the oxygen release mass exchanger, so that the oxygen content adjustment process of the lead-bismuth alloy is realized in a closed environment, impurities are prevented from being mixed in, and the quality of the lead-bismuth alloy is ensured. According to the lead-bismuth reactor provided with the oxygen control device, the content of oxygen in the lead-bismuth alloy can be actively adjusted, and long-term stable operation of the reactor is achieved.

The present disclosure provides systems and methods for accelerating the aging and / or drying process of making aerogels via the use of an external electric field to induce an electro-osmotic flow inside the pores of an alcogel, rather the relying solely on diffusion-limited mass exchange. To overcome the time and cost of conventional aerogel manufacturing that requires long, involved, and costly processing, the present disclosure provides systems and methods for generating a potential difference across the alcogel to induce advection inside the pores.

This invention discloses a 58 Co、 60 The calculation method, system, and medium for Co accumulation in the resin bed are as follows: S1, simplify the operating environment of the ion exchange column; S2, analyze the mass exchange relationship within the ion exchange column to obtain a simplified mathematical model, and approximate the solution of the simplified mathematical model to obtain the ion exchange model; S3, analyze the mass balance and transport relationship within the ion exchange column to obtain a simplified mathematical model, and approximate the solution of the simplified mathematical model to obtain the mass conservation model within the bed; S4, calculate the... 58 Co、 60 The accumulation of Co in the resin bed over time. This invention analyzes the mass exchange relationships, mass balance, and transport relationships to obtain an ion exchange model and a mass conservation model within the bed, enabling calculations of... 58 Co、 60 The accumulation of Co in the resin bed over time provides support for predicting the radiation risks posed by the accumulation of activation corrosion products to equipment and maintenance personnel.

The present invention relates to a cooling system (1) for immersion cooling of electronic components, wherein the cooling system (1) is - A container (3) that can be filled with a two-phase heat transfer fluid, in which electronic components can be immersed in the liquid phase, and which has a gaseous space on the surface of the liquid heat transfer fluid, -A heat exchanger is provided within the gas space of container (3) and forms a liquid heat transfer fluid. -At least one condenser unit (7), the condenser unit (7) is in contact with the gas space of the container (3) by at least one fluid inlet opening (71) and at least one fluid outlet opening (72) for mass exchange of a gaseous medium to the condenser unit (7) and a liquid medium from the condenser unit (7), and comprises at least one condenser unit (7) having an outlet (79) for discharging the residual gas phase, - The condenser unit (7) is housed in a housing (74) that encloses a bundle of tubes (73) having heat exchanger tubes (731) extending parallel to each other in the axial direction behind at least one fluid inlet opening (71) in the flow direction (S), thereby forming a flow path (75) within the housing (74). - The tube bundle (73) is arranged inside the housing (74) such that the gaseous medium flows in the flow path (75) along the axial direction of the heat exchanger tube (731).

The invention provides a high-speed fuel mixing enhancing device and method based on active jet flow control, and belongs to the technical field of high-speed propulsion. The device comprises an upstream pre-control jet flow unit arranged on the upstream of a fuel injection opening and a downstream distributed enhanced jet flow unit arranged on the downstream of the fuel injection opening. An incoming flow boundary layer is pre-modulated through upstream jet flow, and favorable initial conditions are created for fuel injection; after fuel is jetted, a flow field is continuously and actively intervened through a plurality of downstream jet flow holes, a vortex structure is generated and enhanced, flow layering is broken, and momentum and mass exchange is promoted. According to the invention, active and accurate regulation and control of a high-speed fuel mixing flow field can be realized, and the mixing uniformity and efficiency are obviously improved.

The invention relates to a method and a device for calculating a mass exchange coefficient between bedrock and a fracture in an underground reservoir, and belongs to the technical field of seepage simulation of fracture type underground reservoirs. The method for calculating the mass exchange coefficient between the bedrock and the fracture in the underground reservoir comprises the following steps: performing embedded grid division on a bedrock region and a fracture region in the underground reservoir, and determining a connection pair between a fracture grid and a bedrock grid; based on the permeability of the bedrock grid corresponding to the connection pair, determining a Green element function under a bedrock grid permeability main axis coordinate system; source item coordinates in the Green element function are used as variables, integration is conducted on the Green element function along the fracture grids belonging to the same connection pair, and a pressure response function is determined; and based on the pressure response function, determining the conductivity between the bedrock grid and the fracture grid corresponding to the connection pair. According to the method, the calculation precision of mass exchange between the bedrock and the fracture in seepage simulation of the embedded discrete fracture model can be remarkably improved.

The invention provides a portable soil source water drawing device using a day and night natural condensation method in a semi-arid region and a using method, the portable soil source water drawing device comprises a mass exchange cylinder, a high light transmission ball cap is arranged at the top of the mass exchange cylinder, the lower part of the mass exchange cylinder is embedded in a soil body, a high heat conduction probe is arranged on the outer surface of the high light transmission ball cap, and the high heat conduction probe is embedded in the soil body. Through holes are evenly formed in the mass exchange barrel, a coil pipe is wound on the outer wall of the mass exchange barrel, a hot air inlet valve is arranged at the inlet end of the coil pipe, the outlet end of the coil pipe is connected with an air exhaust pipe, the air exhaust pipe is arranged in the center of the mass exchange barrel and extends out of a high-light-transmittance ball cap, and an exhaust port one-way valve is installed at the top end of the air exhaust pipe. A water condensation and catchment groove is formed in the lower portion in the high-light-transmission ball cap and connected with a water collection device. The device is mainly applied to drawing water from soil in arid and semi-arid environments, the principle that the moisture absorption capacity of air is increased along with temperature rise is utilized, the soil is heated in the daytime, the moisture absorption capacity and moisture content of the air in the regional soil are increased, and the air is used for cooling fast and condensing water drawing at night.

The invention relates to the technical field of food processing, and discloses a marinating pot for stewing marinating soup and a preparation process of spice marinating soup, and the preparation process comprises the following steps: preparing the marinating pot, pretreating spices, preparing a marinating soup basic solution, stewing the marinating soup and post-treating the marinating soup. According to the invention, an electromagnetic induction heating mode adopted by the marinating pot and a high-precision temperature control system cooperate with each other, so that uniform transfer of heat in a boiling process can be realized, and a stable thermodynamic environment is created for sufficient dissolution and conversion of various flavor substances in spices; the special vertical and horizontal combined stirring design is combined, the manual stirring effect is simulated, it is guaranteed that materials in the pot are evenly heated, sufficient heat and mass transfer is achieved, the phenomena of flavor deterioration and charring caused by local overheating are avoided, the flavor purity and taste plumpness of marinated soup are improved, and the market competitiveness of the marinated soup is improved. The layering sense, the harmony and the stability of the flavor of the marinated soup are enhanced by implementing a refined boiling process with staged variable temperature and variable stirring strength.

The utility model discloses a rectification multistage tower which comprises a tower body and a preheater, the tower body comprises a first-stage tower, a second-stage tower, a third-stage tower, a fourth-stage tower and a fifth-stage tower, the first-stage tower, the second-stage tower, the third-stage tower, the fourth-stage tower and the fifth-stage tower are respectively communicated with the preheater through pipelines, the first-stage tower is communicated with the second-stage tower through a pipeline, the second-stage tower is communicated with the third-stage tower through a pipeline, and the third-stage tower is communicated with the fifth-stage tower through a pipeline. The third-stage tower is communicated with the fourth-stage tower through a pipeline, the fourth-stage tower is communicated with the fifth-stage tower through a pipeline, a first-stage pump is arranged at the lower end of the first-stage tower, a second-stage pump is arranged at the lower end of the second-stage tower, a third-stage pump is arranged at the lower end of the third-stage tower, a fourth-stage pump is arranged at the lower end of the fourth-stage tower, and a fifth-stage pump is arranged at the lower end of the fifth-stage pump. The first-stage tower, the second-stage tower, the third-stage tower, the fourth-stage tower and the fifth-stage tower are all of square structures and are arranged side by side. The technical scheme is reasonable in structural design, compact in structure, low in height, high in heat and mass transfer efficiency, easy to maintain and good in practicability.

The present application relates to heat mass exchange equipment detection technical field, disclose a kind of method and device for testing packing performance, method includes the following steps: adjusting system to run to dynamic heat balance state;Utilize air state detection mechanism to carry out physical mixing sampling to cross section air to obtain average dry-wet bulb temperature, and simultaneously collect inlet and outlet water temperature;Air is shaped after passing through flow equalizer, average dynamic pressure is collected through physically connected wind pressure detector and actual air mass flow is calculated;Based on the acquisition parameter, according to heat transfer mass transfer theory, the numerical integral is carried out to calculate packing performance test constant;Finally, through multi-working condition test and curve fitting, general performance characteristic equation is established.The present application effectively solves the measurement error problem caused by airflow distribution uneven by air physical mixing sampling and airflow homogenization pressure measurement, improves the accuracy of thermodynamic parameters and flow calculation, and the characteristic equation generated has higher engineering application value.

The invention discloses a dechlorination reaction device for coal-to-methanol synthesis gas, and relates to the technical field of dechlorination reactors, preliminary dechlorination is realized through multi-stage bed pretreatment of a first-stage dechlorination device, and a bionic wriggle module of a second-stage dechlorination device is combined with rotation driving and periodic extrusion reset actions to realize dechlorination. Uniform contact of gas is ensured through rotation in the circumferential direction, channeling is avoided, micropore-level forced substance exchange is formed through periodic pressing and suction in the depth direction, three-dimensional dynamic contact is achieved, and compared with a static or one-way dynamic contact mode of a static bed or a single rotating bed, the contact efficiency is greatly improved. According to the mode, the contact area and the contact efficiency of the gas and the adsorbent are greatly improved, micropore-level deep dechlorination can be realized, the residual quantity of chloro compounds in the synthesis gas is effectively reduced, and the strict requirement of a subsequent process for preparing methanol from coal on raw material gas is met.

This invention relates to an integrated device for enhanced generation and rectification using ultrasonic oscillation atomization coupling, comprising a rectification section and a generation and stripping section. The rectification section, from top to bottom, includes a vapor outlet, a reflux inlet, a trough-type solution distributor, an oscillating atomizing packing ring, and a tray. The generation and stripping section, from top to bottom, includes a concentrated solution inlet, a collector, a perforated solution distributor, an inclined falling film tube, an annular ultrasonic atomizer, an annular ultrasonic oscillator, a perforated plate, a dilute solution outlet, and a heating water inlet. The oscillating atomizing packing ring, through the synergistic effect of high-frequency ultrasonic atomization and medium-to-low-frequency ultrasonic oscillation, increases the mass transfer area and mass transfer driving potential energy of the rectification section, thereby improving its performance. The annular ultrasonic atomizer facilitates heat and mass exchange between the atomized droplets and the rising vapor, whose temperature decreases progressively along the falling film height, replacing the stripping process in the rectification column. The annular ultrasonic oscillator overcomes the problem of reduced mass transfer driving potential of the falling film solution caused by the atomized droplets in the generation and stripping section.

This invention relates to the field of nuclear reactor technology, and more specifically, to an oxygen concentration control device and method. The device includes a mass exchanger, a reactor vessel, a reaction atmosphere pretreatment loop, a liquid level regulation loop, an oxygen sensor, and a heating assembly. The mass exchanger includes a first cylindrical structure and a second cylindrical structure. The method includes controlling the reaction atmosphere pretreatment loop to purge the air from the reactor vessel cavity and fill it with an inert gas; obtaining the oxygen concentration value within the reactor vessel cavity; comparing the oxygen concentration value with an oxygen concentration range; and controlling the periodic change of the liquid level in the mass exchanger through the liquid level regulation loop. This invention improves the safety and stability of the oxygen concentration control device.

This invention discloses a rotary kiln with a built-in guide plate based on uniform material roasting, belonging to the field of rotary kiln control technology. It includes a rotary frame and a rotary drum. The rotary frame has guide wheels movably connected to both sides via bearings, and a rolling ring is fixedly fitted in the middle of the rotary drum. This invention, through a built-in, real-time adjustable telescopic baffle and a unique zoned temperature control structure, collaboratively solves the common problems of uneven material heating and process rigidity during rotary kiln roasting. By using a rotary control mechanism to precisely adjust the height of the telescopic baffle, it actively controls the radial throwing and axial movement of the material, greatly enhancing the heat and mass exchange between the material and the hot airflow, significantly improving roasting uniformity and thermal efficiency, and fundamentally improving product consistency. Furthermore, the adjustable baffle and dividing plate divide the drum into two independent temperature zones, and precisely control the transfer of material between zones, realizing the integration and rapid switching of multiple heat treatment processes such as preheating, reaction, and sintering.

The invention relates to the technical field of rare earth oxides, and provides a preparation method of rare earth oxide powder. The preparation method comprises the following steps: by taking oxalic acid as a precipitator, carrying out precipitation reaction by adopting an airflow precipitation reactor to obtain an oxalic acid rare earth precursor, and calcining the oxalic acid rare earth precursor to obtain rare earth oxide powder. According to the method, the airflow precipitation reactor is used for carrying out precipitation reaction, substance exchange and mixing in the precipitation reaction are promoted through the disturbance effect of gas on liquid, the precipitation reaction is more uniform and sufficient, an oxalic acid rare earth precursor with the smaller particle size is obtained, and then the rare earth oxide powder with the large specific surface area can be obtained through calcination. The result of the embodiment shows that the specific surface area of the prepared rare earth oxide powder reaches 20.586-52.499 m < 2 > / g, and the particle size is uniform.

This invention discloses a gas-liquid mixing evaporation device based on cyclone annular atomization, belonging to the field of fluid heat and mass exchange technology. It includes an airflow carrier channel with an axially arranged channel for the main airflow to flow axially. A tangential airflow inlet is provided on the side wall of the airflow carrier channel to introduce external airflow. The direction of the external airflow entering the channel forms an angle with the radial direction of the airflow carrier channel, thereby inducing the formation of an annular rotating cyclone field within the airflow carrier channel. By constructing an annular atomization zone perpendicular to the main airflow, this invention extends the droplet residence time by more than 30% compared to traditional coaxial spray devices. Combined with the secondary breaking effect of the cyclone field, the evaporation efficiency can be improved by 25%-40%. It integrates cyclone generation, secondary atomization, and main flow transport functions into a single channel, eliminating the need for complex multi-channel systems. The device is small in size, has low pressure drop, is easily integrated with existing systems, and can adapt to different flow and pressure conditions.

Title of the invention: Liquid distributor for heat and mass exchange column. A liquid distributor (1) comprises a lower plate (P) provided with orifices through which a liquid leaves the distributor to irrigate a lower element, parallel parallelepiped chimneys (C) dedicated to the passage of the ascending gas, thus delimiting liquid channels above the lower plate, these chimneys being provided with closing means on the upper part allowing the liquid to be diverted, the chimneys are distributed over a central circular section of the lower plate, creating a peripheral channel on the perimeter of the lower plate fluidly connected to the channels, a plurality of plates (R1, R2), each plate having an elongated rectangular shape with two ends, with two plates per channel,the plates being oriented at an acute or zero angle to the horizontal characterized in that the total length of the two plates present in a channel is less than 85% of the length of the channel, so that the plates of each channel are spaced apart from each other. [FIG.2]

The utility model provides a reaction rectifying tower, including tower body, catalyst bed layer and packing, the bottom of tower body is provided with light phase material inlet, the top of tower body is provided with heavy phase material inlet, the catalyst bed layer is provided with a plurality of, all install in the tower body, the packing is installed in the tower body close to the one end of top; a heavy-phase material enters the tower body from the heavy-phase material inlet of the tower body and flows downwards, a light-phase material enters the tower body from the light-phase material inlet of the tower body and flows upwards, and the heavy-phase material and the light-phase material are subjected to heat and mass exchange in the catalyst bed layer, so that the esterification reaction is more thorough, and the filler arranged at the top of the tower body plays a role in rectification, so that the esterification efficiency is improved. And the tower body is divided into the rectifying tower and the plurality of reaction towers, so that the total height of the tower body can be greatly reduced, and the retention time of substances in the tower is reduced, thereby reducing the time required by the separation process and improving the rectifying efficiency.

The invention relates to the technical field of thermodynamic process control and energy recovery of cryogenic fluid. The self-coupling constant-pressure boiling and energy level gradient utilization system solves the problems of low energy efficiency and complex structure caused by the fact that an existing cryogenic anti-freezing technology depends on external heat source heating and open-loop emptying. The system comprises a liquid nitrogen supply unit, a single-tube-bundle integrated immersed heat and mass transfer unit and a pressure energy cascade recovery network. The device is characterized in that the shell pass of the heat and mass transfer unit is not provided with an auxiliary heating element, liquid nitrogen in the shell pass is driven to boil only through sensible heat released by fluid in a pipe, self-coupling back pressure is built in a closed space through a back pressure adjusting assembly, and the boiling point of the liquid nitrogen is physically clamped in a safe temperature zone. Meanwhile, the system utilizes expansion work generated by liquid nitrogen gasification to carry out lossless pressurization on an upstream tank car through a recovery network. A double-heat-exchanger structure is abandoned, thermodynamic self-balancing and energy closed loop are achieved, and the entropy production and operation cost of the system is remarkably reduced.

The utility model relates to the technical field of road detection equipment, in particular to a mixed reaction mechanism of a hydrothermal synthesis reaction kettle, which comprises a bracket, the steering engine is arranged on one side of the support, the driving connecting arm is connected with an output shaft of the steering engine, the driven connecting arm is rotationally connected with the other side of the support, the connecting column is hinged to one end of the driving connecting arm and one end of the driven connecting arm, the U-shaped connecting arms are connected with one end of the connecting column, and the reaction kettle fixing mechanism is hinged to the two U-shaped connecting arms. The reaction kettle fixing mechanism comprises a large-diameter fixing cylinder, a connecting ring arranged at one end of the large-diameter fixing cylinder, a small-diameter fixing cylinder connected with the inner wall of the connecting ring, and blocking rings respectively arranged at the other end of the large-diameter fixing cylinder and one end, far away from the connecting ring, of the small-diameter fixing cylinder; the device is convenient for stably fixing the reaction kettle consisting of large and small diameter sections, and can swing in the reaction, so that the material mixing uniformity is improved, the accumulation or dead angle is avoided, and the heat and mass exchange efficiency is optimized.