关键词: 能量, 优化, 低温余热, 利用

Abstract: Based on the analysis of energy transfer characteristics, distribution of low-level heat resources and sinks, a new method about process energy integration and utilization of low-level heat in petroleum processing is proposed, which combines mathematical planning and heuristic method. The energy integration covers total energy planning (TEP), direct heat exchange among various processing units, materials supply in high temperature, unit inner energy integration, recovering and applying low-level heat systematically, operation of steam power system. The utilization of low-level heat includes estimation and classification of low level heat resources and sinks, establishment of hot water sub-networks, and flexibility analysis of total hot water system. A practical application of this proposal in SINOPEC Luoyang Company shows that an energy conservation of 97.8 MJ/t was obtained, i.e. a 41 million RMB saving annually.

Key words: energy, optimization, low-level heat, utilization