17 results about "Chemical equilibrium" patented technology

The invention relates to the technical field of industrial process intelligent analysis, in particular to a method and system for monitoring the regeneration process of make-up water resin, and the method comprises the steps of monitoring backwashing, water filling, layering and regeneration processes through images and sensing signals, judging a reaction endpoint, calculating the optimal regeneration duration and outputting a monitoring result. The expansion height and layering texture features of a resin bed are captured through machine vision, the physical form is accurately fed back to avoid resin loss and guarantee the layering effect, the gas-liquid phase change moment is sensitively captured through the frequency shift characteristic of vibration frequency, the filling degree of a tank medium is guaranteed, and the contact efficiency is improved. According to the method, the concentration trend and the conductivity variance are analyzed in combination with least square regression, the chemical equilibrium endpoint of the ion exchange reaction is intelligently recognized, the optimal operation duration is calculated by applying nonparametric trend inspection, data driving in the regeneration process is achieved, and the agent consumption and the time cost are remarkably reduced on the premise that the effluent quality is guaranteed.

The embodiment of the application provides a chemical equilibrium simulation method for soil salt ions, comprising: acquiring multiple ion data of parameters associated with a chemical equilibrium simulation process of salt ions and constructing a chemical reaction parameter database; and calculating ion activity and constructing a chemical solving model, wherein the chemical solving model comprises a precipitation-dissolution reaction simulation model and a complexation reaction-cation exchange simulation model, one chemical solving is completed by sequentially solving the precipitation-dissolution reaction simulation model and the complexation reaction-cation exchange simulation model; setting initial conditions and termination conditions of iterative operation of the chemical solving model, inputting parameter data into solving, taking a concentration difference of multiple ions after adjacent two chemical solvings as an external loop control standard epsilon, judging whether to enter next chemical solving iteration or outputting a simulation result to obtain a precipitated chemical component content, a complexed chemical component content and an exchanged chemical component content of the salt ions in the soil.

The invention relates to the technical field of crude oil compounding, and discloses a crude oil structure determination method and device, and the method comprises the steps: screening out a target compound oil system from each compound oil system based on a first characteristic parameter of target crude oil and a second characteristic parameter of each compound oil system; according to the content of the acid gas and the content of the amine solvent in the target crude oil, establishing a chemical equilibrium model of the target compound oil system based on the reaction of the amine solvent and the acid gas; and solving the chemical equilibrium model until the target compound oil system reaches the target equilibrium state, and taking the structure corresponding to the target compound oil system in the target equilibrium state as the structure of the target crude oil. According to the scheme, the chemical equilibrium model of the compound oil system is established and solved based on the reaction of the amine solvent and the acid gas, and the target crude oil structure can be accurately simulated, so that the influence of the crude oil structure on crude oil behaviors can be accurately determined.

The present application relates to the technical field of industrial process intelligent analysis, in particular to a make-up water resin regeneration process monitoring method and system, comprising monitoring backwashing, water filling, layering and regeneration process through image and sensing signal, determining reaction end point and calculating optimal regeneration time length, and outputting monitoring result, in the present application, resin bed layer expansion height and layering texture features are captured through machine vision, physical form is accurately fed back to avoid resin loss and guarantee layering effect, gas-liquid phase change time is sensitively captured by using vibration frequency frequency shift characteristics, tank medium filling degree is ensured to improve contact efficiency, concentration trend and conductivity variance are analyzed by using least square method, ion exchange reaction chemical equilibrium end point is intelligently identified, and non-parametric trend test is applied to calculate optimal operation time length, regeneration process data driving is realized, and medicament consumption and time cost are significantly reduced under the premise of guaranteeing water quality.

The application discloses a simulation evaluation optimization method for a heavy-duty gas turbine combustion chamber combined flame tube design, comprising the following steps: S1. Based on the chemical equilibrium and thermodynamic principles, the main combustion chamber state is calculated, and the gas mixing, flow, ignition, combustion and equilibrium processes in the main combustion chamber are simulated; S2. For the simulation results, the aerodynamic boundary conditions are input, and the geometric boundary conditions are confirmed by constructing the objective function and the constraint conditions, and then the global optimization in the continuous space of the swarm intelligence is realized by using the differential evolution algorithm through the differential information between the individuals in the swarm; the penalty mechanism is used to balance the negative influence of the specified parameters in the global optimization process. The ignition success probability parameter is constructed, the simplicity of the single parameter evaluation is met, the combined flame tube geometry is optimized according to the operation conditions at the time of ignition, the high and low of the ignition success probability after optimization is used to determine whether the operation condition ignition can make the whole machine flame, and the evaluation simulation optimization is finally realized.

The invention discloses a simulation evaluation optimization method for heavy duty gas turbine combustion chamber cross flame tube design, which comprises the following steps: S1, calculating the state of a main combustion chamber on the basis of chemical equilibrium and thermodynamic principles, and simulating gas mixing, flowing, ignition, combustion and equilibrium processes in the main combustion chamber; s2, for a simulation result, inputting pneumatic edgings, confirming geometric edgings by constructing a target function and constraint conditions, and then realizing global optimization in a swarm intelligent continuous space by adopting a differential evolution algorithm through differential information among individuals in the swarm; in the global optimization process, a penalty mechanism is used for balancing negative effects of specified parameters. According to the method, the ignition success probability parameter is constructed, the simplicity of single parameter judgment is met, meanwhile, the cross flame tube is geometrically optimized according to the operation condition during ignition, whether ignition under the operation condition can achieve cross flame of the whole machine or not is determined according to the optimized ignition success probability, and evaluation simulation optimization can be finally achieved conveniently.

The present application relates to the technical field of biogeochemistry, and discloses a method, system, device and medium for quantitatively analyzing the influence of calcification of calcified organisms on carbon emission, comprising: setting a chemical equilibrium initial state of a target system according to a research purpose, wherein a plurality of chemical reactions exist in the target system; changing the concentration of a variable to be studied by a preset amplitude value; solving the equilibrium state of the plurality of chemical reactions under the condition that the concentration of the variable to be studied is changed by the preset amplitude value, obtaining the concentration change of a system variable of interest, and repeating the step until a preset cycle termination condition is reached; and obtaining a quantitative influence factor of the change of the variable to be studied on the target system according to the concentration change of the system variable of interest and the preset amplitude value of the concentration change of the variable to be studied. The present application proposes a simplified chemical equilibrium simulation method suitable for a carbonate system after a small disturbance, which has high precision and can be used to accurately evaluate the influence of the variable to be studied on the system variable of interest of the target system.

The invention provides a simulation analysis method of a polymerization reaction, which comprises the following steps: constructing an acrylonitrile photo-initiated RAFT polymerization model, deducing a chemical equilibrium equation of each species according to an acrylonitrile polymerization reaction mechanism, simplifying the chemical equilibrium equation of the species by adopting a moment method, and solving a moment method ordinary differential equation set through COMSOL software; a generalized Beer-Lambert law is adopted and a kinetic model is combined to describe a rule of change of conversion rate and molecular weight distribution along with light intensity. And starting COMSOL software to carry out simulation solution on the polymerization reaction process, and carrying out repeated iteration on the basic control equation and the moment method ordinary differential equation set until related parameters converge, thereby realizing accurate prediction of the conversion rate, molecular weight distribution, reaction system temperature and concentration distribution in the acrylonitrile photo-initiated RAFT polymerization reaction process.

The invention belongs to the technical field of chemical process strengthening, and discloses a double-catalytic filler double-section reactive distillation method and device for a chemical reaction limited system.The device comprises a tower kettle reboiler, a tower top condenser and a double-section reactive distillation tower, and the double-section reactive distillation tower comprises a tower body; an upper rectifying section, an upper reaction section, a lower rectifying section, a lower reaction section and a stripping section are arranged in the tower body from top to bottom. The reaction sections of the device are respectively filled with the first catalytic filler with high mass transfer efficiency and the second catalytic filler with catalytic activity, and the first catalytic filler and the second catalytic filler are respectively used for realizing high-efficiency separation of products and rapid conversion of reactants. According to the invention, two catalytic fillers with different properties are coupled in the same tower, so that functional matching and synergistic enhancement of reaction and separation processes in space are realized, the limitation of the traditional single catalytic filler is overcome, the conversion rate of chemical equilibrium limited reaction can be remarkably improved, the energy consumption is greatly reduced, and the method has remarkable economic and technical advantages.

The invention relates to the technical field of semiconductors, and provides a mask pattern defect risk assessment method and a computer program product. The method comprises the following steps: acquiring the level of a mask which affects the pattern defect of the mask, and respectively endowing a first risk value and a first weight; obtaining the factor characteristics of the mask influencing the pattern defects of the mask from the perspective of chemical equilibrium, and respectively endowing a second risk value and a second weight; according to the first risk value, the first weight, all the second risk values and the corresponding second weights, obtaining a risk assessment result of the mask pattern defects; and according to the risk assessment result and the productivity of the defect inspection equipment, determining a target mask needing to be subjected to pattern defect inspection. According to the method, risk assessment is carried out on the possibility that different mask plates generate fog defects, and the inspection priorities of the different mask plates are established, so that the mask plate with the highest risk can be subjected to pattern defect inspection in time, limited defect inspection equipment can play a huge role in capacity, and the problem of fog defects of the mask plates is effectively prevented.

The invention discloses a polyhydric alcohol full-allyl end capping method, and belongs to the technical field of organic chemical industry. According to the method disclosed by the invention, the end-capping efficiency is innovatively improved by a method of multiple sodium modification-end-capping cycles, the problems that the traditional method is influenced by chemical equilibrium and the end-capping rate is not high or complete end-capping is difficult are avoided, and by adopting the method disclosed by the invention, a polyhydric alcohol all-allyl end-capped product with the purity of over 97 percent by weight can be obtained at the total yield of over 70 percent; and the product with higher purity can be obtained by further refining through a known technology in the field. The by-products generated in each step can be recycled and can be put into the process or prepared into useful products, so that the atom economy is good, and the three-waste pollution is less. The process design of each step is scientific, the operation is simple, special equipment and harsh process conditions are not needed, and industrialization is facilitated.

The present invention provides a method of producing high-purity magnesium hydroxide from seawater or refined salt brine, which comprises: a) a purification step of filtering organic and inorganic impurities contained in seawater or refined salt brine; b) a precipitation step of calculating a hydrogen ion concentration index of the seawater or refined salt brine within a range calculated by a chemical equilibrium computer simulation, determining an amount of an alkali substance corresponding to the hydrogen ion concentration index based on the calculation, and adding the alkali substance to the seawater or refined salt brine subjected to the purification step, thereby selectively precipitating only magnesium ions to form magnesium hydroxide; and c) a drying step of drying the magnesium hydroxide.

A spectral analysis method for thermodynamically analyzing performs multivariate analysis to a plurality of measurement spectra measured under a plurality of measurement parameters, using MCR method that separates a pure spectrum from the plurality of measurement spectra, and calculates a concentration value of each pure spectrum. In this method, an equilibrium model corresponding to an equilibrium state of a sample in which three or more types of chemical species coexist is set, and at least one chemical-equilibrium equation corresponding to the equilibrium model is set. In the MCR method, a concentration curve based on the chemical-equilibrium equation is fitted to the calculated concentration values, an optimal value of a thermodynamic parameter is acquired, a new concentration value is acquired from the chemical-equilibrium equation based on the optimal value, and thus the concentration value is constrained.

The application provides a metal ion molten salt extraction device, which comprises a piston, a sealed pipe, a fixing part, a rubber hose, a quartz pipe and a filter screen. The sealed pipe is a straight pipe with open ends, one end of which is provided with the piston, and the other end is provided with the fixing part. The rubber hose is internally through and has open ends, one end of which is connected with the sealed pipe through the fixing part, and the other end is connected with the quartz pipe. The quartz pipe is a straight pipe with open ends, one end of which is connected with the rubber hose, and the other end is a molten salt sampling port. The filter screen is arranged at the molten salt sampling port and is used for filtering the metal powder possibly taken during sampling, so as to ensure that the metal ion concentration in the sample is not affected. The application also provides a use method of the device. Through the method of placing preset metal particles and rapidly cooling the sample in the quartz pipe, the chemical equilibrium deviation caused by the disproportionation reaction of metal ions is inhibited, and the accurate and rapid sampling of the multivalent metal ions in the molten salt is realized.

A process for melt-infiltrating a partially densified ceramic matrix composite, comprising the steps of: disposing in a chamber of a thermal processing apparatus a partially densified ceramic matrix composite comprising a ceramic matrix including at least silicon carbide and at least one oxide phase precursor; introducing at least one gas into the thermal processing apparatus; elevating a temperature of the chamber to cause a reaction between the silicon carbide and the least one gas; achieving a chemical equilibrium of the gases within the chamber; identifying a gas regime for minimizing the liberation of SiO and SiO2; maintaining a temperature and CO2:CO ratio of the identified gas regime within the chamber; and, melt-infiltrating the partially densified ceramic matrix composite with the at least one oxide phase precursor to form a molten oxide ceramic matrix composite comprising a matrix including a silicon carbide phase and an oxide phase.

The embodiment of the invention discloses a mine wastewater softening and recycling method and device, electronic equipment and a readable medium. A specific embodiment of the method comprises the following steps: acquiring a wastewater quality data set and a wastewater component data set based on a wastewater data acquisition equipment group; based on the wastewater component data set, determining at least one chemical equilibrium data corresponding to the mine wastewater to obtain a chemical equilibrium data set; based on the chemical equilibrium data set, generating first medicament delivery information; performing fuzzification processing on each piece of wastewater quality data in the wastewater quality data set to generate a fuzzy putting rule base; on the basis of a fuzzy delivery rule base, correcting the first medicament delivery information to generate corrected medicament delivery information; generating a medicament putting instruction corresponding to the corrected medicament putting information, and controlling an associated medicament putting device to execute medicament putting operation corresponding to the medicament putting instruction. According to the embodiment, membrane pollution is avoided, and the situation of membrane resource waste is avoided.

The invention relates to a converter valve water cooling system scaling ion form evaluation method and system, and the method comprises the steps: constructing a chemical equilibrium model containing a plurality of hydroxylation coordination ion forms based on the thermodynamic equilibrium relation of metal ions in an aqueous solution; setting model input conditions according to operation parameters of the water cooling system in the converter valve; solving the chemical equilibrium model by using numerical calculation to obtain a theoretical distribution curve of the fraction of each hydroxyl complex ion form along with the change of pH; the method comprises the following steps: detecting the form of scaling ions in an actual or simulated cooling water sample by adopting a complex colorimetric method to obtain ion form distribution data measured by an experiment; and comparing and analyzing the theoretical distribution curve and the ion form distribution data, and evaluating the existence form and stability of the scaling ions in different water quality environments so as to guide the scaling prevention and control of the water cooling system in the converter valve. Compared with the prior art, the method has the advantages of accurate form evaluation, real and reliable data, high technical practicability, reduced operation and maintenance cost and the like.