On-line optimization method of crude oil blending based on incremental mode

Abstract

The invention discloses an online optimization method for crude oil blending based on an incremental mode, including the initialization of blending task parameters, setting the optimization period, the optimization mode of each attribute and the weight of the objective function, and obtaining the attribute data and accumulation of each blending component according to a predetermined optimization period. Blend quality attribute product, update blending head attribute increment, component formula increment, and component flow increment upper and lower limit constraints, obtain the optimal formula of each blending component in the current optimization cycle, and send it to the blending control system execution. This method is aimed at the crude oil blending production process of the refinery, with the properties of the blended crude oil being qualified and the cost of the blending the lowest as the optimization goal, and the optimization of the properties of the crude oil to the upper limit and the lower limit can be realized at the same time, and the optimal composition of the components is calculated according to a certain optimization period. And the optimization results are sent to the blending control system for execution to ensure that the properties and quality of the blended crude oil meet the requirements of the atmospheric and vacuum unit while taking into account the economic optimization, so as to realize the real-time optimization of the blending process and improve the economic benefits of the refinery.

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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