关键词: 石油, 过程系统, 系统工程, 节能减排, 能源管理

Abstract:

Petrochemical industry provides material support for economic development, but it also consumes a lot of energy. Petrochemical enterprises have a great potential for energy saving, and information technology has a great prospect in energy saving area. Based on the analysis of the petrochemical enterprises energy management business, material and management dimensions, the paper proposes the function of the energy management system, which consists of six functions: energy plan, energy operation, energy optimization, energy statistics, energy assessment and energy performance. Then the paper describes the plant model, which includes four layers: measurement layer, operation layer, statistics merge layer and accounting model layer. Next, the energy optimization model is described from the aspect of energy assumption optimization, pipeline optimization and energy power optimization. By establishing energy demand planning model, the energy assumption optimization refines energy media description, optimize device energy programs to improve the accuracy of energy plan to promote the production consumption balance, reduce energy backup redundancy and energy costs. Pipeline optimization is a process for water, electricity, steam, nitrogen, air, fuel and other energy media in the supply, production, transportation, transformation, consumption optimization. Considering the price factor of various field devices constraints and utilities, the energy power optimization is to optimize utility plan and on-line closed-loop control. Finally, the paper analyses the application effectiveness of pilot enterprises and provides a useful reference for promoting petrochemical enterprises energy management informatization process.

Key words: petroleum, process systems, systems engineering, energy-saving and emission-reduction, energy management