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金陵石化1.5Mt/a加氢裂化装置投用初期,能耗超过40kg标油/t原料,通过几次大的技术改造,能耗明显下降,2011年1～11月装置综合能耗为26.89kg标油/t原料。能耗划分显示,燃料气消耗占装置能耗的最大部分,所占比例达42.47%,其次为电能和蒸汽消耗,分别占总能耗的41.05%和12.76%。这3项能耗占到装置总能耗的96%以上。装置的节能降耗工作主要采取以下措施:优化换热网络,回收低温余热;新氢机增加无级气量调节系统,降低压缩机的无用功;脱硫溶剂采取溶剂在线清洗,提高溶剂质量,减少溶剂损耗,同时减缓溶剂系统腐蚀和塔盘结垢;分馏加热炉空气预热器改型以及火嘴改造;保证装置高负荷运行,提高循环氢压缩机、新氢压缩机、原料泵等设备的用能效率;利用变频技术,投用液力透平,实现节电目标;通过热料直供,减少作为溶剂再生塔底热源的1.0MPa蒸汽消耗。
Jinling Petrochemical 1.5Mt / a hydrocracking unit put into use early, the energy consumption of more than 40kg standard oil / t raw material, through several major technological transformation, energy consumption decreased significantly, from January to November 2011 the device integrated energy consumption of 26.89kg Standard oil / t raw materials. The energy consumption division shows that the consumption of fuel gas accounts for the largest part of the energy consumption of the plant, accounting for 42.47%, followed by electricity and steam consumption, accounting for 41.05% and 12.76% of the total energy consumption respectively. These three energy consumption accounted for more than 96% of the total energy consumption of the device. Energy-saving devices to reduce the work to take the following measures: Optimize the heat exchanger network, recovery of low temperature waste heat; new hydrogen machine to increase stepless gas regulation system to reduce the compressor’s useless work; desulfurization solvent solvent online cleaning to improve solvent quality and reduce solvent loss , While reducing solvent system corrosion and tray scaling; fractional heating furnace air preheater retrofit and nozzle reform; to ensure high-load operation of the plant to improve the cycle of hydrogen compressors, new hydrogen compressors, raw materials, pumps and other equipment with energy Efficiency; using frequency conversion technology, the use of hydraulic turbine, to achieve energy-saving goals; direct supply of hot material, to reduce as a solvent regeneration tower heat source 1.0MPa steam consumption.