Catalytic cracking reaction system process simulation optimization model and solution method thereof

Abstract

The invention relates to a catalytic cracking reaction system process simulation optimization model and a solution method thereof. A novel model is a model based on Gupta and the like; in order to contribute to solving the model in process simulation software such as AspenPlusTM, a new form is provided for part of expressions in a material balance equation, an energy balance equation and a fluidized state computation model; and components or stream physical property calculation subprograms provided by the process simulation software are called in the model solution process, so that the simulation optimization work of the model is finished by the process simulation software, the model is convenient to apply to engineering and the calculation result is accurate.

Description

technical field [0001] The invention relates to petrochemical process simulation and optimization technology, in particular to a catalytic cracking reaction system simulation optimization model and a solution method thereof. Background technique [0002] As the secondary processing method of crude oil with the largest processing capacity in my country, catalytic cracking occupies an extremely important position in the petroleum refining industry. The design and operation of catalytic cracking units directly affect the overall benefit of the refinery. In the design and operation stage of the catalytic cracking unit, with the help of the catalytic cracking reaction system process simulation optimization model, the necessary simulation optimization of the design and operation of the reaction system can be carried out, which can improve the design and operation level of the entire unit, thereby increasing the economy of the refinery benefit. [0003] The basis for process simul...

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Problems solved by technology

[0004] 1 These process calculation models are developed for specific catalytic cracking feedstock oils (base feedstock oils). For feedstock oils whose properties differ greatly from those of base feedstock oils, the accuracy of calculation and simulation results will decrease

[0005] 2 Since the reaction systems of specific catalytic cracking units vary widely, in order to ensure the accuracy of calculation and simulation, a large number of device factors are set in the development process of these process calculation models, which causes inconvenience to their specific application

[0006] 3 For calculation and simulation results, these process calculation models can provide basic information such as changes in pressure, temperature, and product yield, but cannot provide information such as void ratio, gas-solid slip factor, etc. that are of important reference significance for process design and operation

Therefore, the use of the lumped reaction model in the simulation and optimization model of the catalytic cracking reaction system will make it difficult to integrate with the process simulation and optimization software, and then it is difficult to perform the simulation optimization of the whole system

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