Hydrogen resource optimization method and system

Abstract

The invention discloses a hydrogen resource optimization method and system. The method comprises the following steps: dividing each unit of a hydrogen system; establishing a nonlinear mathematical simulation model of each unit model and the whole hydrogen system; performing simulation solving on the nonlinear mathematical simulation model; determining an objective function of the whole hydrogen system; establishing a hydrogen using unit mathematical planning model; establishing a light hydrocarbon recovery mathematical planning model; judging whether each flow of the hydrogen recovery unit isused as hydrogen supply of the hydrogen utilization unit or not; establishing a hydrogen recovery unit mathematical planning model; determining the hydrogen public work amount of the hydrogen supply unit; and judging whether the objective function of the whole hydrogen system meets a calculation condition. The method can effectively improve the calculation efficiency of the optimization solution of the hydrogen system under the complex hydrogen system, obtain the optimal solution of the hydrogen system, obtain the optimal matching scheme, improve the comprehensive recovery benefit of hydrogen / light hydrocarbon, and solve the problems of complex mathematical model, difficult convergence and the like caused by the comprehensive optimization of hydrogen and light hydrocarbon of the hydrogen system.

Description

technical field [0001] The invention relates to the field of hydrogen resource optimization, in particular to a refinery hydrogen resource optimization method and system. Background technique [0002] With the trend of heavy and inferior processed crude oil becoming more and more intensified and the requirements for product quality upgrading strengthened, the demand for hydrogen in refineries is increasing. Hydrogen has become the second largest cost of raw materials in refineries after crude oil. element. Hydrogen resource optimization utilization technology is an important means for enterprises to reduce costs and increase efficiency, and has received more and more attention from enterprises. [0003] At present, the research on hydrogen resource optimization mainly includes pinch analysis method and mathematical programming method, whose characteristics are as follows: [0004] (1) Pinch analysis method. To carry out the pinch point analysis of the hydrogen network, it...

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Problems solved by technology

The method of the present invention can avoid problems such as difficult convergence and local optimum often encountered in complex system optimization solutions, and can effectively improve the calculation efficiency of hydrogen system optimization solutions under complex hydrogen systems, obtain the optimal solution of the hydrogen system, and obtain the best matching scheme, Reduce the hydrogen consumption of the refinery, improve the comprehensive recovery efficiency of hydrogen / light hydrocarbons, reduce the amount of hydrogen public works, and solve the problems of complex mathematical models and difficult convergence caused by the comprehensive optimization of hydrogen and light hydrocarbons

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