Crude oil blending multi-period optimized crude oil concocting and scheduling method

Abstract

The invention provides a crude oil blending scheduling method for crude oil blending multi-period optimization, belonging to the technical field of various crude oil blending. The method is characterized in that the mathematic model of the problem is induced; aiming at the non-linear mixed integer programming model induced from the problem, satisfactory solution of the problem is obtained by a high-effect mixed solving strategy. The method of the invention has the advantages that (1) the proposal takes improving the stability of the blending crude oil property as a main object, and takes improving the expected yield of the products as an object at the same time, can reduce the effects of excessively large fluctuation of blending crude oil property on the stability of distillation devices and subsequent devices of the distillation devices, and increase the expected yield of the products to a certain degree; (2) an algorithm structure of solving discrete decision variables and continuous decision variables by layers is adopted, thus improving the problems that the algorithm has low efficiency and poor searching performance, etc. which are caused by that the two groups of variables are optimized at the same time.

Description

A crude oil blending scheduling method for multi-period optimization of crude oil blending technical field The invention relates to a crude oil blending scheduling method for multi-period optimization of crude oil blending in the petrochemical production process, belonging to the field of petrochemical production scheduling. Background technique At present, under the condition of market economy, the oil demand and processing capacity of various refineries continue to increase. For many refineries, a single source of oil can no longer meet the demand. Enterprises along the river all purchase from all over the world, resulting in a large variety of processed crude oil with different properties, which directly affects the stability of production and the implementation of advanced control. How to deal with the mixing of various crude oils needs to be completed by production scheduling. Since the problem of refinery production scheduling was raised in the 1950s, after decades...

AI Technical Summary

Problems solved by technology

When the scheduling plan is implemented only based on manual experience, the properties of the mixed crude oil usually fluctuate greatly, which brings great difficulty to the distillation unit to process crude oil, and then affects the subsequent catalytic cracking, delayed coking and other devices , which greatly increases the difficulty of advanced control

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