11 results about "Chemical procedure" patented technology

The present application relates to the field of industrial software, and provides a chemical process automatic generation method, system and medium. The chemical process automatic generation method comprises the following steps: receiving a natural language description about an industrial process, wherein the natural language description comprises design constraints of the industrial process; starting a multi-agent collaboration system, converting the natural language description into an intermediate representation of the design process through closed-loop interaction among the multi-agents, wherein the multi-agent collaboration system utilizes a semantic entropy index to monitor the logical determinacy of each generation node in the process of generating the design process and triggers a real-time correction mechanism according to the uncertainty quantification result; mapping the intermediate representation into executable instructions of a heterogeneous simulation engine through an adaptation interface to drive the heterogeneous simulation engine to perform physical simulation calculation; and asynchronously extracting the calculation result of the heterogeneous simulation engine to realize closed-loop verification of the design process.

The present application relates to the field of chemical process simulation, and particularly relates to a simultaneous equation simulation block solving method for process industry. The method comprises the following steps: extracting equations in an activated state and variables in an unfixed state from a chemical process model to form an original equation and variable set to be solved; converting the equation and variable set into a graph data structure reflecting system dependency according to a preset block strategy; using a strongly connected component identification algorithm to traverse the graph data structure to obtain a strongly connected component set, each strongly connected component in the strongly connected component set corresponding to a sub-equation block in the process equation; determining a solving order of the sub-equation blocks according to the dependency of the sub-equation blocks; solving each sub-equation block according to the solving order of the sub-equation blocks; and collecting the solving results of each sub-equation block to obtain a global solution of the complete chemical process model.

This utility model discloses a double-sealed chemical process pump, relating to the technical field of chemical process pumps. It includes a fixed motor and a pump head. A second connecting flange is fixedly installed on the side of the fixed motor, and a first connecting flange is fixedly installed on the side of the pump head. The first connecting flange is connected to the second connecting flange. This double-sealed chemical process pump utilizes a water-swellable rubber ring. When the first layer of seal leaks—that is, when leakage occurs between the first sealing strip and the first sealing groove—the fluid medium comes into contact with the interior of the water-swellable rubber ring. At this time, the water-swellable rubber ring expands, fitting tightly against the interior of the fixed cavity and forming a seal. This improves the sealing effect of the connection between the first and second connecting flanges, facilitates disassembly and assembly, reduces installation difficulty, and allows for quick assessment of the pump's sealing condition for subsequent operations.

This invention relates to the field of intelligent processing of chemical process diagrams and industrial image recognition technology, specifically to an intelligent parsing and change management method for chemical process diagrams (P&ID) based on image processing. The method includes: acquiring a two-dimensional degraded document image containing unstructured modification traces; extracting underlying image connectivity features and character features; inputting a graph neural network to reconstruct an initial logical topology network; dividing local regions and detecting logical conflicts using deterministic topology rules, quantifying the probability value of topological logical conflicts; comparing with a preset danger threshold, actively severing logical connections in high-risk areas and marking them as isolated sub-graph regions awaiting manual review, while retaining connectivity paths in low-risk areas to generate a global topology network; updating the global topology network based on manual review feedback, and outputting the final document drawing change parsing version. This invention significantly improves the recognition stability of complex on-site drawings.

The application provides a chemical process diagram information extraction method and system, and relates to the technical field of image processing. The method comprises the following steps: text extraction is performed on the process diagram to obtain each text and a corresponding bounding box; chemical object detection is performed on the process diagram to obtain attribute information of each chemical object in the process diagram; based on the positional relationship between the bounding box of the target text and each chemical object, the chemical object to which the target text belongs is determined, and the two are bound; based on the direction vector of the material flow line in the process diagram and the bounding box of the chemical object, the predecessor and successor of each chemical object are determined; based on the topological relationship and text binding relationship of all obtained chemical objects, a structured prompt word is constructed; through a visual language model, process information extraction is performed on the process diagram under the constraint of the structured topological relationship of the structured prompt word, and a process diagram file corresponding to the process diagram is obtained. The application aims to improve the information extraction accuracy of the chemical process diagram.

The utility model relates to the field of petroleum chemical process pump, especially to the petroleum chemical process pump of preventing leakage, technical scheme: the petroleum chemical process pump of preventing leakage, including have pump machine body, liquid inlet pipe, liquid outlet pipe, no. The utility model is provided with the buckle and the slot on the transportation pipeline connected with the pump machine body, and the buckle is clamped in the slot to fix the sealing ring on the pipeline.

A solution method for batch simulation of complex processes based on modular decomposition is proposed, relating to the field of chemical process simulation technology. A decoupling method for model solution is proposed, decomposing the simulation solution of highly integrated complex processes into three stages: First, the process is simplified to a non-cyclic process and its feasibility is verified; second, the strong coupling of the process is broken by fracturing key tear streams, and operating parameters are adjusted to achieve process convergence after fracturing; finally, the tear stream data saved from the second stage simulation is assigned to the original process, and the final global solution is obtained after solving. For cases where convergence is still difficult in stages two and three, the success rate of the method is further improved by combining an intra-batch data migration mechanism and a cyclic diversion measure. This effectively solves the problem of unsolvable batch simulations, achieving a process run convergence rate of over 80%, significantly improving the success rate of batch simulation solutions and overall solution efficiency.

The utility model discloses a kind of high-temperature high-pressure wear-resistant petroleum chemical process pump, it is related to petroleum chemical process pump technical field, including motor assembly and pump head assembly, motor assembly and pump head assembly are connected.The utility model said a kind of high-temperature high-pressure wear-resistant petroleum chemical process pump, fixed snap pin is clamped in the inside of another clamping hole of rotating shaft, first base and second base can be connected quickly, split type structure, and bottom can be moved by moving roller, it is convenient for the movement and assembly of chemical process pump, flexible, portable, improve the flexibility of device, utilize the slope of filter screen, make solid particle slide to the bottom of filter screen, due to the blocking of baffle, the medium flow rate is slower at this place, solid particle is affected by gravity and falls into the inside of residue pipe and accumulates, reduce solid particle in the inside movement of chemical pump, and then reduce the damage of solid particle to pump inner wall, improve the service life of pump.

This invention discloses a method and system for evaluating chemical processes involving green electricity-to-hydrogen synthesis, ammonia synthesis, and methanol synthesis, relating to the field of green electricity-coupled chemical process evaluation technology. The method includes: determining green electricity and core unit parameters; constructing and calibrating unit performance models to obtain core performance items; establishing a full-process steady-state model using an integrated model, introducing green electricity fluctuations for dynamic simulation to obtain full-process process stability items; analyzing the attenuation law of core performance items under fluctuations, calculating the corresponding load adjustment energy consumption increment and equipment operating condition adaptation cost to obtain green electricity fluctuation adaptability items; using pinch technology to analyze hot and cold flow streams and designing a waste heat cascade recovery network, calculating the waste heat recovery amount and system energy efficiency improvement rate to obtain energy optimization efficiency items; and substituting the above four evaluation items into the target evaluation model for comprehensive evaluation, outputting the process evaluation results. This invention can mitigate the impact of green electricity fluctuations on chemical processes and achieve evaluation of process performance.

The application discloses an electrolyte crystallization simulation method and device based on Gibbs free energy minimization, equipment and medium, relates to chemical engineering separation simulation calculation technical field, and the method is to obtain the material flow, component composition and other working condition parameters of the crystallizer feed stream, and the temperature and pressure operating conditions of the target system, and the solid phase component information of the electrolyte to be precipitated; based on the principle of Gibbs free energy minimization, the total Gibbs free energy objective function is constructed, the solid-liquid phase equilibrium problem is converted into a nonlinear programming problem with constraints by applying equality and non-negative constraints; the solid-liquid phase equilibrium result is obtained by using the interior point method, and finally, the crystallization solid phase fraction is determined, and the liquid phase composition, solid phase type and crystallization amount are output. The application does not need to preset the solid phase precipitation sequence, is suitable for complex systems with multiple salt coexistence and multiple solid phase competitive precipitation, significantly improves the solving stability and calculation accuracy, and can be directly integrated into chemical process simulation software, thereby providing reliable bottom calculation support for crystallization process design.

The present application relates to the field of chemical production monitoring and analysis, in particular to a chemical production data real-time monitoring and intelligent analysis system and method; the method comprises the following steps: obtaining chemical production data, constructing a chemical production network according to the chemical production data; obtaining real-time production signal data of the chemical production network, analyzing the chemical production network, obtaining task production value, cycle usage degree and production cycle, analyzing the production cycle, obtaining expected production value, obtaining task monitoring signals according to the expected production value and the task production value; analyzing the chemical process node, the production node and the task production value through the chemical production network, obtaining process production value, obtaining production process signals according to the process production value and the chemical process node; generating a chemical production management strategy according to the task monitoring signals and the production process signals. The present application can improve the safety of chemical production.