氢气平衡与优化系统的应用

Research and Application on Balance and Optimization of Hydrogen System

针对齐鲁石化氢气系统运行现状,采用氢夹点技术深入分析氢气系统存在的问题并进行氢气供用网络优化,在此基础上构建以产耗平衡监控、成本核算、管网模拟、调度优化为核心的氢气平衡与优化系统。应用表明:该系统实现对氢气生产、输送及消耗过程的全面管控,能及时发现氢气系统产耗不平衡、异常排放等情况;通过集成装置工艺参数、物耗能耗以及相关物料价格,在线计算出产氢、耗氢成本;同时利用管网模拟技术实现氢气管网任意管段氢气流量、流速、压降等指标的软测量。基于上述条件,结合氢夹点理论分析开展供用网络优化,以用氢成本最低为目标给出优化调度方案,实现以耗定产,有效降低氢气运行成本。

For the current situation of hydrogen system in the Qilu Petrochemical Company Ltd,the hydrogen pinch technology was used to analyze the main problems of hydrogen system and optimize the hydrogen pipe network.On this basis,the hydrogen balance and optimization system was constructed,which takes production and consumption balance monitoring,hydrogen production cost accounting,pipe network simulation and scheduling optimization as the core.The application shows that the system achieves the comprehensive control of the production,transportation and consumption process of hydrogen.The phenomenon of production and consumption imbalance,abnormal emissions in hydrogen system could be discovered timely.The on-line cost calculation of hydrogen production and hydrogen consumption was realized by integrating the technology parameters of the equipment,consumption of material and energy and relevant material prices.At the same time,the soft measurement of the hydrogen flow,velocity and pressure drop in the arbitrary section of the hydrogen pipe network is realized by using the pipe network simulation technology.Based on the above conditions,we adopt the hydrogen pinch theory to analyze and optimize the supply-use network,the optimal scheduling scheme with the minimum hydrogen consumption cost as the objective was presented.The goal of developing production plans according to hydrogen consumption was achieved,which effectively reduced the operating costs of hydrogen production.