Abstract:

The current environmental regulations are increasingly stringent,prompting refineries to deepen the hydrogenation process to enhance product quality. However, this will significantly increase hydrogen consumption. In addition, when the adjustment of the hydrogenation unit processing capacity and the switching of crude oil cause impurity content to fluctuate, the working conditions of the hydrogenation unit will deviate. Failing to promptly optimize hydrogen usage during this period may result in decreased product quality or lead to wastage of hydrogen. To ensure product quality compliance, reduce hydrogen consumption, and lower production costs, this paper proposed a multi-period hydrogen network integration method coupled with hydrogenation unit optimization. The method first obtained the optimal operational parameters for each unit across various scenarios using an optimization model. Subsequently, multiple optimized operational scenarios were integrated into the hydrogen network. The proposed method was applied to a case study taken from a real refinery. The results showed that the hydrogen network operating strategy obtained from the proposed method can meet the hydrogenation requirements of hydrogenation units under various scenarios and enable the production of qualified products at lower costs.

Key words: hydrogen network, process system, optimal design, integration, multi-period, hydrotreating process

摘要：

当前环境法规日益严格，炼厂为提高产品质量需要深化加氢处理深度，但会显著增加氢气消耗。此外，当加氢装置处理量调整以及原油切换引起杂质含量波动时，加氢装置工况将会产生偏移，若不及时对新工况下的氢气使用进行优化，可能导致产品质量下降或造成氢气浪费。针对于此，提出耦合加氢装置优化的多周期氢网络集成方法。该方法第一阶段通过使用加氢精制装置操作参数优化模型获得不同场景下各装置的最佳操作参数，第二阶段综合多个优化后的操作场景集成氢网络。通过实例计算表明，基于所提出的优化方法能获得满足不同场景下的加氢精制装置的加氢需求、以更低的成本获得合格产品的氢气网络运行策略。

关键词: 氢气网络, 过程系统, 优化设计, 集成, 多周期, 加氢精制