Novel multi-objective optimization method for catalytic cracking separation system

Abstract

The invention discloses a novel multi-objective optimization method for a catalytic cracking separation system. The method comprises the following steps of S1, obtaining production data, collected in actual production, of the catalytic cracking separation system, building a process model of the catalytic cracking separation system by utilizing process simulation software Aspen Plus, and calibrating the process model through the obtained production data, thereby enabling an analog output value to be the same as the production data; S2, comprehensively selecting multiple constraint conditions in a working process of the catalytic cracking separation system, setting optimization variables corresponding to the constraint conditions, and by taking C3 content in a product dry gas and energy consumption of the catalytic cracking separation system as optimization objectives, building a multi-objective optimization model; and S3, establishing an Aspen Plus and Matlab integrated platform, and solving the multi-objective optimization model by applying a fuzzy optimization algorithm and a multi-objective line-up competition algorithm on the integrated platform, thereby obtaining an optimal solution set of the C3 content in the product dry gas and the energy consumption. According to the method, the condition that optimal solutions possibly exist in a transitional area is considered, so that the best optimization effect is achieved.

Description

technical field [0001] The invention relates to the technical field of petroleum processing, in particular to a novel multi-objective optimization method for a catalytic cracking separation system. Background technique [0002] Petroleum is an essential energy source for the development of modern industry, and an essential source of organic chemical products and transportation fuels. With the increasing trend of heavy and inferior crude oil at home and abroad, catalytic cracking is used to convert heavy oil such as residual oil, wax oil, deasphalted oil, and raffinate into high-value dry gas, LPG, stable gasoline, and light diesel oil. Products, because of their strong adaptability of raw materials and high yield of light oil, have become the core refining equipment of domestic refining and chemical enterprises. [0003] Under the urgent requirements of today's social and economic development and energy saving and emission reduction, the product quality of the catalytic cra...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new multi-objective optimization method for catalytic cracking separation system in view of the defects of poor solution effect and long time-consuming when solving multi-cycle complex system flow in the prior art

Images