摘要
针对炼油厂部分装置空气冷却器(空冷器)低温热回收及利用问题,对各装置空冷器低温热的热源品位、负荷及工艺介质特性、操作条件等因素进行了综合分析.根据季节变化考虑热阱的周期性波动特点优化设置热阱,进行热量的梯级回收利用,分别建立两套低温热回收利用系统,实现空冷器低温热合理利用.两套低温热回收利用系统可回收299.3 MW热量,回收后的低温热可用于发电、制冷、工艺单元加热、管道设备伴热、建筑物采暖等方面.冬季低温热可全部利用,夏季低温热过剩.
Abstract
In response to the issue of low-temperature heat recovery and utilization of air coolers in some refinery units,the factors such as the grade of low-temperature heat source,load,process medium characteristics and operating conditions of the air coolers in each unit were analyzed comprehensively.According to seasonal variation,considering the periodicity fluctuation of the heat trap,the heat trap was set up to recover the heat step by step,and two sets of low-temperature heat recovery and utilization systems were set up to realize reasonable utilization of low-temperature heat in the air cooler.Two sets of low-temperature heat recovery and utilization systems can recover 299.3 MW heat,and the recovered low-temperature heat can be used for power generation,refrigeration,process unit heating,pipeline equipment tracing,building heating,and other aspects.All low-temperature heat can be fully utilized in winter,and surplus in summer.
维普
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