化工系统产品能耗分析的设备级质量流-流评价方法

产品的能耗分析对于化工系统生产工艺的可持续性评价具有重要意义。对系统中各物流能耗的合理评价是准确分析和合理评价产品能耗的关键。从系统中废物流能耗的合理分配和评价出发，通过区分过程能耗类型及其对应能耗分配系数，研究了物流能耗的合理分配和评价方法。基于质量流分析和流分析方法，提出了设备级质量流（MFA）-流（EFA）分析的产品能耗评价方法。通过炼厂蜡油加氢装置5种产品的能耗分析，从装置或过程尺度、产品能耗强度和产品CO₂排放强度3个方面阐明了所提出产品能耗分析和评价方法的合理性。

Device-level MFA-EFA assessment approach for energy consumption analysis of products in chemical processing systems

Energy consumption analysis of products is of great significance for evaluating the sustainability of processes in chemical processing systems.A reasonable evaluation of energy consumption for streams in the system is crucial to ensure the accuracy and rationality of energy allocation to products.From the view of energy consumption assessment of waste streams,a reasonable analysis of streams is examined by distinguishing the types of energy consumption and their allocating coefficients.A device-level MFA-EFA energy consumption assessment approach of the product is proposed based on mass flow analysis (MFA) and exergy flow analysis (EFA).The proposed method is used to evaluate energy consumption of five products in the vacuum gas oil hydrotreating unit in a refinery.The consistency of the proposed method is exemplified from three aspects including devise or process scales,energy consumption intensity and CO₂ emission intensity of the products.