76 results about "Cascade" patented technology

The invention provides an online monitoring device for multiple nuclides in liquid effluent, and particularly relates to the technical field of radioactive substance detection. The online monitoring device comprises a shell, a cascade separation module, a fluid control module, a detection module and a control system, the cascade separation module, the detection module and the control system are arranged in the shell, the cascade separation module comprises a plurality of resin columns and a plurality of separated liquid collecting bottles communicated with the resin columns, and the separated liquid collecting bottles are communicated with the resin columns. The fluid control module comprises a liquid storage device, an injection pump and a control valve, the liquid storage device is respectively communicated with the plurality of resin columns through pipelines, the injection pump and the control valve are respectively arranged on the pipelines and are used for controlling the flow direction and the flow velocity of fluid in the liquid storage device, and the detection module is used for detecting the radioactive activity of nuclide; the control system is used for controlling operation of the cascade separation module, the fluid control module and the detection module. According to the invention, synchronous monitoring of multiple nuclides is realized, the multi-nuclide monitoring efficiency is improved, and the monitoring cost is reduced.

The invention provides a float-discrete differential dynamic programming successive approximation method for cascade reservoir group scheduling, comprising the following steps: water levels of cascade reservoir group are raised from small to large according to water surface areas of reservoirs; the cascade reservoir group generates electricity after raising the water level according to incoming water; at the end of calculation period, and initial water level trajectory is obtained when the raised water level of the cascade reservoir group falls back to the set water level; based on the initial water level trajectory obtained, discrete differential dynamic programming calculation of each reservoir is carried out from upstream to downstream with the goal of maximizing the cascade total power generation, and the improved water level trajectory of each cascade reservoir is obtained; taking the improved water level trajectory of each cascade reservoir as the initial trajectory, and the iterative optimization is carried out.

The application provides a cascade reservoir group storage and discharge dynamic coordination matching scheduling optimization method and system, and relates to the technical field of water conservancy and hydropower engineering, wherein the method comprises: obtaining the storage capacity of each reservoir in the cascade reservoir group at the current time and the designed storage capacity, and calculating the current fullness rate of each reservoir; for each pair of adjacent reservoirs in the cascade reservoir group, based on the current fullness rate of each adjacent reservoir and the preset joint regulation capacity coefficient, a weighted relative difference value representing the difference degree of the fullness rate of the adjacent reservoirs is calculated; based on the weighted relative difference values of all adjacent reservoir pairs, the coordination matching degree of the cascade reservoir group is determined. Through the application, accurate quantification, dynamic tracking and early warning of scheduling coordination are realized, and the scientificity and timeliness of scheduling decisions are improved.

A method and cascade reactor system for producing elemental rare earth metals and rare earth-aluminum alloys via aluminothermic reduction are disclosed. The method involves combining rare earth oxides or halide salts with aluminum powder, initiating a thermite-type reaction under inert or controlled atmospheric conditions, and recovering the molten metal product. Fluxing agents may be used to enhance slag fluidity and phase separation. The cascade reactor comprises multiple thermite zones with staged ignition, thermal transfer mechanisms, and slag separation interfaces, enabling sequential reduction of mixed feedstocks. The system supports both batch and continuous formats and achieves high recovery yields, reduced aluminum contamination, and compatibility with alloying and post-purification processes. The invention is adaptable to individual rare earth species and mixed oxide concentrates, offering a scalable, energy-efficient, and environmentally favorable route to rare earth metal and alloy production.

According to the ginseng extraction system and method provided by the invention, the dual goals of high purity and high yield of ginsenoside extraction are achieved through raw material adaptive parameter pre-optimization, self-adaptive cascade purification and activity protection, the enrichment effect of high-value monomer saponin is remarkable, and the loss of active ingredients is accurately controlled. According to the application, a detection-decision-regulation full-process closed-loop intelligent control system is constructed, near infrared spectrum rapid screening and HPLC-MS / MS accurate quantitative dual-mode online detection are fused, real-time and accurate monitoring of the saponin content is realized, and off-line detection and artificial experience parameters are not needed; the multi-target central control unit can automatically decide a purification path and process parameters according to detection data, and designs such as membrane pollution on-line monitoring, automatic backwashing and solvent circulating preheating are combined, so that continuous operation of the process is ensured, and production interruption caused by equipment failure and process fluctuation is avoided.

The present application relates to the technical fields of chemical synthesis, and discloses a kind of aviation kerosene production process and equipment, production process includes: carbon source gas, hydrogen, circulating gas is sent into main reactor reaction and obtains including hydrocarbon, methanol, CO, water and unreacted gas mixed component a;Mixed component a is sent into cascade reactor and is prepared to obtain including aviation kerosene component, light hydrocarbon component and water mixed component b, wherein light hydrocarbon component includes one or more of C2-C7 light hydrocarbon;Mixed component b is fractionally condensed to collect liquid phase and gas phase, and liquid phase is carried out three-phase separation to obtain aviation kerosene component, light hydrocarbon component and water respectively, aviation kerosene component is hydrotreated, fractionation to obtain aviation kerosene.The present application realizes the step-by-step control of reaction path in carbon source hydrogenation process through the synergistic effect of main reactor and cascade reactor, improves the selectivity of aviation kerosene target product, so that the obtained product meets the 3# aviation kerosene standard requirements in key indicators such as distillation range distribution, aromatic content and low temperature performance.

A product-activity-tunable method for calcining a carbonate mineral, relating to a method for calcining a carbonate mineral. In the present invention, two stages of reactions (i.e., a carbonate decomposition reaction and a product high-temperature sintering reaction) of a carbonate calcination process are separated in two reactors, i.e., a carbonate decomposition reactor and an activity tunning reactor, and the activity of products is flexibly regulated and controlled by respectively controlling the reaction conditions of the two reactors, thereby achieving co-production of multiple active products, and solving the problems of traditional production technologies, e.g., single product activity and limited product application. In addition, high-temperature flue gas from the activity tunning reactor is used as a heat source for the carbonate decomposition reactor, achieving efficient cascade utilization of energy in a system, and achieving significant energy saving and consumption reduction effects. In addition, the production process takes only a few seconds to a few minutes, the system processing capacity is high, and large-scale industrialization is easy to achieve.

A reactor apparatus comprising a reactor vessel 32, media conditioning circuit 34 and a fluid flow controller 36 wherein the fluid flow controller allows the flow of fluid through the reactor vessel to be reversed. The external fermentation broth loop has conditioning modules 50 52 that may alter pH, temperature, gases, or remove waste products. The fluid flow controller may reverse the flow automatically at intermittent periods, and may be a pump or valve. In an alternative configuration, there is a media and cell separation device 42 44 that retains cells inside the reactor vessel, allowing circulation of reaction media between the bioreactor and media loop. The cells may be separated from the media through a filter or membrane, or mechanically separated by gravity or centrifugation. Additionally, there may be several reactor vessels that are connected in a cascading (430, Fig 5) or parallel (330, Fig 5) arrangement. A method of operating the reactor apparatus is also disclosed.

The invention provides a transformer oil acetylene degassing-free detection method and system based on click chemistry, and relates to the technical field of gas detection analysis, a first product generated by a first click chemical reaction and a second product generated by a second click chemical reaction are used as catalysts to trigger a subsequent same cascade chemical amplification reaction, and the detection result is accurate. A single product molecule can catalytically hydrolyze a large number of acid-sensitive substrates, the conductivity of a mixed solution is obvious and can be measured and changed, accurate detection of acetylene with extremely low concentration is realized, and meanwhile, acetylene detection is calculated by utilizing a second click chemical reaction synchronously generated by an internal standard reagent and a triggering agent and independent of an acetylene concentration detection process, so that the accuracy of acetylene detection is improved. According to the method, the signal ratio is obtained by calculating the ratio of the first electric signal value to the second electric signal value instead of the single first electric signal value, interference factors are offset, online self-correction of acetylene detection is realized, and high consistency and accuracy of detection results under different times and different batches of reagents are ensured.

The application discloses a method for purifying and diversifying products of helium-rich low-grade natural gas, and belongs to the technical field of natural gas purification. In view of the key problem that there is a lack of relatively economical natural gas helium extraction and synchronous denitrogenation technology in China, a topological structure design strategy of a cascade coupling process with complementary advantages of multiple separation membranes, an electrochemical hydrogen pump and adsorption is proposed. The advantages of the separation unit are determined by taking the helium recovery rate, the helium purity, the heat value of long-distance pipeline natural gas, the methane recovery rate and the energy consumption as multi-objective criteria, the overall design and collaborative optimization of the multi-technology coupling production of diversified products are realized, the separation energy consumption is effectively reduced, and the production of diversified products such as helium and long-distance pipeline natural gas from the helium-rich low-grade natural gas is realized at low cost and high yield.

This invention discloses a highly efficient method for reducing ferric ions in zinc leaching solution, belonging to the field of hydrometallurgical technology. The zinc leaching solution and zinc sulfide concentrate are placed in a closed reactor and subjected to a pressure-enhanced reduction reaction at a temperature of 100-120℃ and a pressure of 0.2-0.3 MPa to reduce the ferric ions in the leaching solution. Simultaneously, compressed air is introduced into the reaction system to prevent the generation of hydrogen sulfide gas. The reaction time is 0.5-2.0 h. The reduced reaction system is then settled and filtered to obtain the reduced solution and reduced sulfur residue. This technical solution innovatively proposes the use of compressed air for pressure-enhanced reduction of Fe in zinc leaching solution. 3+ This achieves the suppression of H2S gas generation while avoiding the reduction of Fe. 2+ It is oxidized again to Fe by a high concentration of O2. 3+ The pressurized reduction process within a closed container significantly improves reduction efficiency while enhancing the production environment. It achieves the cascade separation and enrichment of multiple metals, closed-loop circulation of the medium, and the reduction, resource recovery, and harmless treatment of slag.

Methods and systems for detecting an analyte with a biomolecule are provided. The method comprises introducing a biomolecule to the object, introducing a substrate to the object, and introducing a solvent to the object. The substrate, biomolecule, and solvent form a mixture on the object. The biomolecule comprises a recognition portion capable to bind with the analyte and a trigger portion capable to participate in an amplifying cascade chemical reaction responsive to the analyte binding with the recognition portion. The method comprises binding the recognition portion of the biomolecule with the analyte. The method comprises chemically reacting the trigger portion of the biomolecule with the substrate via an amplifying cascade chemical reaction to produce an amplified product responsive to the analyte binding with the recognition portion. The method comprises detecting the amplified product, thereby detecting presence of the analyte.

This invention relates to the field of crude phenol refining technology, and discloses a method and apparatus for intermittent refining process control and online automatic detection of crude phenol. It utilizes an online automatic sampling circulation system, which overcomes the vacuum negative pressure condition of the production system through an explosion-proof metering pump, pressurizing, filtering, and isothermal heating the sample to establish a forced circulation loop to prevent crystallization and blockage by high-viscosity materials. Using an online automatic detection circulation system, and equipped with a dual-flow gas chromatography and automated experimental module, it synchronously detects component concentration, trace moisture, pigment color difference, and antioxidant properties in real time. After data verification by the central control system, the distributed control system automatically adjusts the reflux ratio, outflow rate, and heating power of the distillation column based on cascade feedback, dynamic dead zone, and variable decoupling strategies. This invention solves the problem of difficulty in synchronously detecting multiple indicators online, realizes closed-loop control of the entire crude phenol refining process, and significantly improves product quality stability.

The invention relates to the technical field of fluid separation, in particular to cascade separation equipment for mixed gas, which comprises a first separation cavity, a second separation cavity and a rotary drum, the first separation cavity rotates coaxially, the second separation cavity is arranged at the radial far end of the first separation cavity, and the rotary drum penetrates through the interior of the first separation cavity. The included angle between the tangent line of any point of the inner wall of the first separation cavity and the axis of the rotating shaft in the same plane is smaller than 90 degrees, and a drainage piece for guiding mixed gas to flow to the second separation cavity and a plurality of blades for enabling the mixed gas to be in a laminar flow state are arranged in the first separation cavity. And the use requirements in multiple fields can be met. Meanwhile, the invention also relates to a separation method, the separation of the mixed gas is realized by using the separation equipment and based on four physical mechanisms, namely the action of strong centrifugal force, layered flow and an environment in which the mixed gas is in a laminar flow state and the Brownian motion is inhibited, and the separation efficiency and the separation effect are greatly improved.

This invention discloses a simulation method for a countercurrent cascade extraction separation process using acidic extractants, belonging to the field of extraction separation technology. Considering the combined effects of extraction production inputs such as the content of the components to be separated in the feed solution, the concentration of the organic phase extractant, and extraction control factors such as the flow rates of the aqueous and organic phases on the extraction rate and distribution ratio, a simulation method for a countercurrent cascade extraction separation process using acidic extractants based on system dynamics is proposed. This method can simulate the countercurrent cascade extraction separation process of acidic extractants in production settings, solving problems such as the difficulty in solving high-dimensional differential equations, large deviations between predicted results and actual engineering conditions, and difficulty in practical application in enterprise production in existing technologies.

The invention discloses a stepped separation technology and device for carbon in gasified ash, and belongs to the technical field of environment-friendly treatment equipment.The stepped separation device comprises a treatment box, a feeding hopper is fixedly installed on one side of the treatment box, a ball-milling barrel is rotationally connected to the inner wall of the treatment box, and the side, close to the feeding hopper, of the ball-milling barrel is provided with an opening; and a sorting box is fixedly installed at the bottom of the treatment box, the top and the bottom of the sorting box are open, a material guide hole is formed in the bottom of the treatment box, and the material guide hole is matched with the opening in the top of the sorting box. The upper separation roller and the lower separation roller correspond to the magnetic separation function and the electric separation function respectively, step-by-step separation is achieved through the staggered design of the isolation boxes, cross contamination is avoided, ash can fully act on the separation rollers in combination with the shaking allocation mechanism, and the application efficiency is high.

This application provides a method, system, medium, and product for monitoring and locating leaks in chemical pipelines that integrates artificial intelligence, relating to the field of intelligent monitoring technology. It includes: a current monitoring node receiving a first cascaded verification wave transmitted by a first upstream node through the pipeline medium. This verification wave contains at least pipeline fingerprint information. After receiving the verification wave, the node analyzes the pipeline fingerprint information and uses this information to detect leaks in the pipeline section between the current node and the first upstream node. If the detection passes, the node adaptively updates the pipeline fingerprint information based on the actual propagation characteristics of the verification wave, generating a second cascaded verification wave and sending it to the first downstream node. If the detection fails, an abnormal location alarm signal is generated and uploaded to the monitoring center, and the transmission of cascaded verification waves to downstream nodes is stopped. Implementing this method can improve the real-time performance of detection and accurately pinpoint the leak area.

This application relates to the field of pump station regulation technology, providing a hydraulic optimization control method and system for flow balance among cascade pump stations. The method includes: constructing a water distribution correlation topology through water balance analysis; loading real-time interval water distribution demand to locate the M water distribution flows of M pump stations; simulating the pressure wave propagation process of water distribution demand changes and outputting transient terminal flow rates; calculating initial PID weight allocation based on the deviation between the target flow rate of the pump station and the water distribution flow rate; compensating the initial PID weights based on the deviation between the target terminal flow rate and the transient terminal flow rate, and executing independent PID control and pressure surge regulation coordinated control. This application solves the technical problem that in the process of flow scheduling among cascade pump stations, due to changes in water source and fluctuations in pump station flow demand, it is impossible to accurately regulate the flow balance among pump stations, leading to water resource waste and low efficiency of cascade pump stations. It achieves the technical effect of improving the stability and flow regulation efficiency of cascade pump stations and ensuring optimal allocation of water resources.

Device (1) for drying material, in particular biomass, for example sewage sludge or wastewater, comprising at least one drying chamber (2), wherein a cascade dryer (3) with one or more drying surface pairs (4) is arranged in the drying chamber (2), wherein the cascade dryer (4) is provided for drying material from a first dry matter content, and at least one technical room (5), wherein a pre-drying plant (6) is arranged in the technical room (5) upstream of the drying chamber (2) from the perspective of the material to be dried, wherein the pre-drying plant (6) is provided for drying material with a second dry matter content that is lower than the first dry matter content, wherein the pre-drying system (6) is designed to be switchable on for pre-drying the material depending on the dry matter content of the material to be dried, so that if the dry matter content is equal to or greater than the first dry matter content, the material can be fed directly to the drying chamber (2) and if the dry matter content is less than the first dry matter content, it can be dried or is dried by means of the pre-drying system (6) up to a dry matter content that is equal to or greater than the first dry matter content.

The invention belongs to the technical field of uranium concentration, and particularly relates to a method for determining the structure of a pipeline connecting device and the pipeline connecting device. The method comprises the following steps: acquiring working parameters and a three-dimensional model of a target pipeline connecting device; the working parameters comprise the pressure intensity and the flow speed in the pipeline; performing numerical simulation by utilizing the working parameters and the three-dimensional model to obtain a particle size and speed distribution cloud picture of the target pipeline connecting device; according to the particle size and the speed distribution cloud picture, whether the target pipeline connecting device meets the pipeline design requirement or not is determined. According to the embodiment of the invention, solid impurities can be deposited in the operation process, the content of solid sediments in cascade is reduced, and the descending trend of the separation capacity of a cascade system is delayed.

This invention relates to a method for enhanced cascade separation and resource utilization of calcium-free roasted chromium slag through reducing alkaline roasting. The specific steps are as follows: Calcium-free roasted chromium slag, a reducing agent, and an alkaline reagent are mixed to obtain a chromium slag mixture; the chromium slag mixture is placed at a first temperature and held for a first time under an inert atmosphere, causing the iron oxides in the chromium slag mixture to be reduced, and the aluminum and chromium oxides to be sodium-treated, while inhibiting the reduction of chromium oxides, resulting in a reduced chromium slag mixture; the reduced chromium slag mixture is filtered to obtain filter residue and an aluminum-enriched filtrate, which can be used for alumina production and the recovery of the alkaline reagent; under an inert atmosphere, the filter residue is placed at a second temperature and held for a second time. Due to the separation of aluminum in the filter residue, metallic iron can be efficiently separated by melting, and chromium can be efficiently enriched in the molten residue. This invention can efficiently achieve the cascade resource utilization of iron, chromium, and aluminum components in calcium-free roasted chromium slag.

The invention relates to the technical field of chemical process equipment monitoring, in particular to a cascade heat exchange reactor fault diagnosis method, system and equipment based on a distributed observer and a storage medium. Structural parameters of the cascade heat exchange reactor are obtained, unitized segmentation is carried out according to the arrangement position of a temperature sensor, and the temperature transfer relation between units and a heat exchange mass exchange model are established; fault sensitive parameters are identified based on model analysis, and a distributed observer assembly comprising a plurality of adaptive observers is constructed for each subsystem; a state estimation value and a fault parameter estimation value are obtained in real time through an observer assembly, a residual sequence is constructed for fault detection, residual signal convergence characteristics and a parameter change mode are analyzed, and local fault types and global fault types are effectively distinguished; and determining the specific position and severity of the fault according to the residual convergence criterion and the fault parameter variation amplitude, and completing fault isolation and quantitative evaluation. Accurate fault diagnosis of a complex cascade system is realized, and fault detection precision and diagnosis efficiency are improved.

The invention relates to a gradient treatment and multi-metal collaborative recovery process for micro-fine particle coated sulfur concentrate. The gradient treatment and multi-metal collaborative recovery process comprises the following steps: (1) carrying out acidic complexing reinforced desilicication pretreatment; (2) two-stage temperature-controlled and atmosphere-controlled roasting: vulcanizing and volatilizing in a first-stage low-temperature reducing atmosphere to remove arsenic, and pore-forming and desulfurizing in a second-stage medium-temperature oxidizing atmosphere; (3) selectively extracting copper by reducing ammonia leaching; and (4) gold and silver are leached in a non-cyanide mode. According to the cascade treatment and multi-metal collaborative recovery process, a complete technical chain from'blocking secondary wrapping from the source 'to'recycling arsenic and sulfur in the process' to'multi-metal cascade recovery 'is constructed, the gold recovery rate and the silver recovery rate are stabilized to be 90% or above and 80% or above respectively, the copper recovery rate reaches 88% or above, and the iron ore concentrate grade is gt; arsenic is smaller than or equal to 0.10%, sulfur is smaller than or equal to 1.0%, and the resource recovery rate gt of arsenic and sulfur is achieved; the comprehensive utilization rate of resources is increased by more than 35%, and comprehensive breakthrough in four dimensions of recovery rate of valuable elements in the sulfur concentrate difficult to treat, product quality, environmental protection benefit and economical efficiency is realized.

The invention discloses equipment, a system and a method for online extraction of enriched heavy water through coupling of an alkaline electrolytic bath. The equipment comprises an alkaline electrolysis unit, a deuterium-enriched water extraction unit and a gas-liquid separation and water regeneration unit, a cascade enrichment system is formed by connecting multiple stages of electrolysis enrichment devices in series, online and step-by-step concentration of deuterium isotopes in raw material water is achieved, and therefore product water with the high deuterium enrichment degree is obtained.

This invention relates to the field of automatic control technology, and in particular to a method and system for asymmetric preset performance control of a cascade continuous stirred reactor without initial conditions. The method includes establishing a mechanistic model of the cascade continuous stirred reactor, transforming it into an error equation for the cascade continuous stirred reactor, pre-specifying that the change in reactant concentration error at the output of the cascade continuous stirred reactor satisfies a banded constraint space, converting the banded constraint space into a symmetric constraint space, constructing a radical-type algebraic saturation function to map the symmetric constraint space into a bounded symmetric constraint space, superimposing an exponential finite-time decay function on the bounded symmetric constraint space to construct a bounded symmetric constraint space without initial conditions, constructing a barrier Lyapunov function based on the bounded symmetric constraint space without initial conditions, and designing an asymmetric preset performance controller without initial conditions using the backstepping method. This invention enables the stable, safe, and rapid operation of the cascade continuous stirred reactor.

The invention provides a biotin fermentation process optimization control method, system and device and a storage medium, and relates to the technical field of biotin ferment.The optimization control method comprises the steps that in the biotin fermentation process, basic data of a fermentation control system is obtained; the basic data comprises temperature data in the fermentation tank, monitoring data reflecting the state of fermentation liquor and dissolved oxygen concentration data in the fermentation liquor; based on the basic data, corresponding control processes are executed respectively; the control process comprises a temperature control process, a pH value dynamic prediction control process and a dissolved oxygen multi-parameter cascade control process. According to the method, the stability of the production process is integrally enhanced, the automation level and the product consistency are improved, the dependence on artificial experience is reduced through closed-loop intelligent cooperative operation of the three processes, a highly stable environment is created for thallus growth and product synthesis, and the production efficiency is improved. Therefore, the final yield, purity and reproducibility among production batches of biotin B5 are directly improved, and comprehensive energy consumption and material consumption are reduced.

To provide a fusion-driven subcritical reactor that is more efficient and safer. [Solution] A fusion-driven subcritical reactor is a nuclear reactor that starts and operates by amplifying neutrons obtained from nuclear fusion and supplying the amplified neutrons to a reactor that holds subcritical nuclear fuel by external neutrons. It consists of a main neutron source that generates DD neutrons through a nuclear fusion reaction, a cascade member that surrounds the main neutron source, separates fusion / fission neutrons, multiplies the fast fission neutrons generated by nuclear fission, and slows down the fast fission neutrons, and a cascade member that surrounds the cascade member and is mainly made of thorium oxide ( 232 It is equipped with a subcritical main fission blanket made of uranium dioxide (ThO2), and a neutron flattening blanket that has a neutron source located around the outer periphery of the main fission blanket to improve the containment of fission neutrons.

The invention relates to a process for the preparation of an unsaturated alcohol of formula (I) comprising subjecting an unsaturated aldehyde of formula (II) to hydrogenation in the presence of a catalyst and a tertiary amine; characterized in that the hydrogenation is carried out in a reactor cascade. Hydrogenation in a cascade of reactors, in particular a cascade of stirred tank reactors, a cascade of bubble column reactors, or a cascade of jet loop reactors reduces the amount of by-products formed and increases the yield and selectivity of the products.