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对中国石化镇海炼化分公司的PX芳烃联合装置重整液分馏塔和脱庚烷塔顶气相物流换热网络进行优化改造,回收大量低温余热,增产1.2MPa蒸汽13.6吨/小时,节电111度/小时。并应用这些多发的蒸汽加热重整装置的脱己烷塔,取代原有3.5MPa蒸汽热源,每小时节约240千克标准油。
China Petrochemical Zhenhai Refining & Chemical Company PX aromatics unit reformer liquid fractionation tower and dehentanizer overhead vapor phase heat exchanger network optimization and recycling, recovery of a large number of low temperature waste heat, an increase of 1.2MPa steam 13.6 tons / hour, saving 111 Degree / hour. And the use of these multiple steam heat reforming unit de-hexane column, replacing the original 3.5MPa steam heat source, saving 240 kg of standard oil per hour.