Program for the Development of a Novel Methodology for the Design of Energy Efficient Biorefineries and Industrial Systems

该研究项目正在开发一种新的能量分析方法，称为“桥梁法”。如果桥接法得到充分发展并转移到工业中，它将代表一个突破，更好地实现能源分析和减少工业过程中的能源使用，使用一种比夹点分析等传统技术更有效的方法，并与之相关的显著温室气体减排。桥梁法考虑能量传递图（ETD），它是基于热力学前两个定律的工业过程中能量传递的表示。ETD展示了能量是如何被保存的，同时在整个工业过程单元中被降解。ETD可以通过修改工艺操作、热交换器网络（HEN）和热电生产系统来可视化提高工厂能源效率的所有机会。***本研究项目的总体目标是继续探索桥梁方法的基本方面，理想情况下，可以开发出适合于工业应用的全球方法。该计划将解决四个研究主题，包括(a)开发热交换网络改造的优化算法，以通过HEN改造减少能源消耗，(b)开发用于分析现场热电系统的热力学关系，(c)开发用于工业集群总体现场分析的方法，特别是针对现有纸浆和造纸厂实施生物炼制的情况。(d)将这些工具组合成设计高能效流程的整体方法。对于在工业环境中工作的过程工程师来说，总体方法应该是用户友好的。桥梁方法的独创性在于对工业过程中的能量转换和退化有了更好的基本理解和表示，并将这种理解结合到节能工业过程设计的实用方法中。**

A novel approach for energy analysis called the "Bridge Method" is being developed in this research program. If the Bridge Method is fully-developed and transferred to industry, it will represent a breakthrough that better enables energy analysis and energy use reduction in industrial processes using a method that is more effective than traditional techniques such as pinch analysis, and the significant GHG reductions associated with this. The Bridge Method considers the Energy Transfer Diagram (ETD), which is a representation of energy transfer in industrial processes based on the first two laws of thermodynamics. The ETD presents how energy is conserved, and at the same time degraded across industrial process units. The ETD makes it possible to visualize all opportunities for increasing plant energy efficiency by modifications of the process operations, the heat-exchanger network (HEN), and the heat and power production system.***The overall objective of this research program is to continue to explore the fundamental aspects of the Bridge Method, ideally to the point where a global methodology can be developed that is suitable for application in industry. Four research themes will be addressed in this program including (a) the development of an optimization algorithm for the retrofit of heat exchange networks to reduce energy consumption by HEN retrofit, (b) the development of thermodynamic relationships for analyzing site-wide heat and power systems, (c) the development of a method for total site analysis for industrial clusters and especially for the case of biorefinery implementation in existing pulp and paper mills, and (d) assembling these tools into an overall methodology for the design of highly energy-efficient processes. The overall method should be user-friendly to process engineers working in the industrial environment. The originality of the Bridge Method lies with a better fundamental understanding and representation of energy conversion and degradation in industrial processes, and the incorporation of this understanding in a practical methodology for the design of energy efficient industrial processes. **