循环冷却水系统经济运行与能耗瓶颈诊断方法研究

Re-circulating cooling water system has enormous energy-saving potential, while single energy-saving technology can not meet the needs of plant-wide energy conservation. There are many components with hydraulic characteristics, thermal characteristics and water quality characteristics coupled complexly in the network. And the system has nonlinear dynamic characteristics, uncertainty and many complex factors affecting energy consumption indicators and economic indicators during its running process. So, research on economic operation and energy consumption bottleneck diagnosis for re-circulating cooling water system is carried on from the perspective of the whole network system in this project, including the following scientific issues: moderate modeling techniques for re-circulating cooling water system are studied based on operation mechanism and real-time data; operation optimization methods for the system are proposed based.on multi-source knowledge and heuristic algorithms; approaches for integrated state evaluation and energy efficiency bottleneck diagnosis are put forward. A set of techniques and methods suitable for modeling, optimization, integrated state evaluation and energy efficiency bottleneck diagnosis will be presented and used for software development, which will be applied to re-circulating cooling water system in the steel plant, improving its level of energy saving and creating significant economic benefits.

循环冷却水系统广泛应用于冶金、石化、电力、化工、轻工等行业，在钢铁行业节能效益就在 200 亿元左右，节能空间巨大。由于管网关键设备全局耦合性，冷却水系统运行节能并不彻底。本项目主要从全管网视角，针对管网组件设备众多，水力特性、热力特性、水质特性复杂耦合，运行过程存在非线性、动态特性以及不确定性，能耗指标、经济指标影响因素繁杂等难点，进行循环冷却水系统的经济运行与能耗瓶颈诊断方法研究。研究基于运行机理和实时数据的循环冷却水系统适度建模方法，研究基于多源知识和启发式智能算法的循环冷却水系统运行优化方法，研究循环冷却水系统综合状态评价与能效瓶颈诊断方法等关键科学问题。形成一套适于大型复杂工业过程的建模、优化、综合状态评价与能效瓶颈诊断的共性技术与方法，并将所提出的方法与技术开发出软件包，应用于钢铁企业的循环冷却水系统，提高其节能减排水平，创造显著经济收益。

循环冷却水系统广泛应用于冶金、石化、电力、化工、轻工等行业，在钢铁行业节能效益就在200亿元左右，节能空间巨大。由于管网关键设备全局耦合性，冷却水系统运行节能并不彻底。本项目主要从全管网视角，针对管网组件设备众多，水力特性、热力特性、水质特性复杂耦合，运行过程存在非线性、动态特性以及不确定性，能耗指标、经济指标影响因素繁杂等难点，进行循环冷却水系统的经济运行与能耗瓶颈诊断方法研究。提出了循环冷却水系统的经济运行与系统能效瓶颈诊断的总体构架与实施方案。在整体构架下，解决了基于运行机理和实时数据的循环冷却水系统适度建模、循环冷却水系统运行优化问题描述、基于多源知识和启发式智能算法的循环冷却水系统运行优化问题求解算法、包含能效指标与运行状态评价指标的循环冷却水系统综合系统状态评价指标体系、基于多源知识的循环冷却水系统综合状态评价与能效瓶颈诊断方法等关键技术。形成一套针对大型复杂工业过程的建模、优化、评价方法理论，解决了一些共性技术，开发了应用软件，进行了试验应用，结果可以提高企业经济收益与节能减排水平。