Online optimization method for crude oil blending on basis of incremental mode

Abstract

The invention discloses an online optimization method for crude oil blending on the basis of an incremental mode. The method includes the steps of initializing blending task parameters, setting an optimization period, each attribute optimization mode and an objective function weight, obtaining attribute data of each blending component and accumulation blending quality attribute product according to the predetermined optimization period, updating upper and lower limit constraints of a blending head attribute increment, a component formula increment and a component flow increment, obtaining an optimal formula of each blending component of the current optimization period and sending the optimal formula of each blending component of the current optimization period to a blending control systemfor execution. Aimed at a crude oil blending production process of an oil refining enterprise, blended crude oil attribute qualification and the minimum blending cost are used as optimization goals, crude oil attributes can be optimized to the upper limit and the lower limit at the same time, the optimal formulas of the components are calculated according to a certain optimization period, and optimization results are sent to the blending control system for execution to ensure that the attribute quality of the blended crude oil meets the requirements of an atmospheric and vacuum distillation unit while economic optimization is also taken into account, so that real-time optimization of a blending process is achieved, and economic benefits of the oil refining enterprise are increased.

Description

technical field [0001] The invention relates to the field of crude oil processing in oil refining enterprises, in particular to an optimization method for crude oil blending, which is an online optimization method for crude oil blending based on incremental mode. Background technique [0002] In order to meet the raw material quality requirements of atmospheric and vacuum units and downstream units and the economic benefits of refineries, corresponding optimization technologies must be adopted in crude oil blending. In the actual industry of crude oil blending, most refineries use manual calculation or offline optimization technology to obtain the initial formula of each blending component, and keep the formula unchanged during the whole blending process. However, when the properties of the component oils are within a certain range When internal fluctuations occur, if the initial formula given by the blending plan is still used, the properties of the blended crude oil will f...

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Problems solved by technology

[0004] Aiming at the problems that the manually calculated formula or the off-line optimized formula cannot adapt to the fluctuation of component properties in the actual production process in the crude oil blending production of oil refining enterprises, resulting in unqualified blended product quality and low benefit, the present invention proposes a method based on increasing On-line optimization method of crude oil blending in quantity mode

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