Catalytic cracking reaction process modeling method and device

Abstract

The invention discloses a catalytic cracking reaction process modeling method and device, and belongs to the field of chemical engineering. The method comprises the following steps: dividing raw materials and products of a catalytic cracking reaction into raw material sets and product sets, wherein the raw material sets comprise corresponding sets of distillate oil easy cracking, distillate oil intermediate, distillate oil easy condensation, vacuum residue easy cracking, vacuum residue intermediate and vacuum residue condensation, and the product sets comprise corresponding sets of dry gas, liquefied gas, coke, gasoline paraffin, gasoline olefin, gasoline naphthenic hydrocarbon, gasoline aromatic hydrocarbon, diesel paraffin, diesel naphthenic hydrocarbon and corresponding lumps of diesel aromatic hydrocarbon; establishing a catalytic cracking reaction network according to the obtained lumped and catalytic cracking reaction mechanism; establishing a catalytic cracking kinetic model according to the catalytic cracking reaction network; and proposing an objective function, and solving kinetic model parameters. According to the method, the influence of the change of the properties of the raw materials on the catalytic cracking reaction process can be truly reflected, and the model solution is simpler and more convenient without influencing the prediction precision of the model.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular, to a method and device for modeling a catalytic cracking reaction process. Background technique [0002] Catalytic cracking is one of the important heavy oil lightening processes, and plays an important role in the production of light oil products such as gasoline and diesel. The design and operation of the catalytic cracking unit has a major impact on the overall economics of the refinery. In the design and operation stage of the catalytic cracking unit, with the aid of the process simulation optimization model of the catalytic cracking reaction system, the necessary simulation optimization of the design and operation of the reaction system is carried out, and the design and operation level of the entire unit can be improved, which can significantly increase the economy of the refinery. benefit. [0003] An accurate and practical process calculation model is needed to ...

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Problems solved by technology

The catalytic cracking reaction process is complicated, and the lumped kinetic model established by the corresponding method at present is difficult to reflect the influence of the change of raw material properties on the product distribution and properties from the mechanism, and it is affected by the complex catalytic cracking raw materials and reaction process in practical application , often less adaptable

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