论文部分内容阅读
以某石化公司为例,对加氢裂化装置应用高压绕管式换热器和往复式压缩机气量无级调节系统(HydroCOM),并对高压空冷器进行改造,实现装置节能进行总结。高压绕管式换热器具有占地面积小,换热效率高,换热面积大,制造成本低等特点,相应节省燃料消耗,降低设备制造费用。装置设计能耗为45.39kg标油/t,实际标定能耗为36.77kg标油/t,仅为设计值的81%。按照同比例折算后,每年节约燃料费用1569.9万元。气量无级调节系统投用后,往复式压缩机的轴功率随加工负荷的降低而降低,低负荷运行时,功率消耗明显下降,且100%满负荷运行时,相比投用HydroCOM系统前,电流下降约30A,每小时节电约300kW.h,也能起到节能作用。针对该加氢裂化装置夏季高压空冷器冷后温度偏高问题进行改造:采用升力系数大、升阻比高的新一代HY高效叶片;将摩擦传动改为同步传动。改造后冷后温度下降3～4℃,循环氢压缩机汽耗下降0.5t/h,且投资回收期只需4个月。
Taking a petrochemical company as an example, HydroCOM is applied to hydrocracking units with high-pressure coiled tube heat exchangers and reciprocating compressors, and the high-pressure air-coolers are retrofitted to save energy. High-pressure wound tube heat exchanger has the advantages of small floor area, high heat exchange efficiency, large heat exchange area and low manufacturing cost, thus saving fuel consumption and reducing equipment manufacturing costs. Device design energy consumption of 45.39kg standard oil / t, the actual calibration energy consumption of 36.77kg standard oil / t, only 81% of the design value. Calculated in accordance with the same proportion, annual savings of 15.669 million yuan fuel costs. After the gas volume control system is put into operation, the shaft power of the reciprocating compressor decreases with the decrease of the machining load. When the load is low, the power consumption obviously drops, and compared with the HydroCOM system before 100% full load operation, Current drop of about 30A, saving about 300kW.h per hour, can also play a saving effect. For the hydrocracking unit in summer after the high pressure air cooler cold temperature high temperature transformation: the lift coefficient of large, high lift-to-high ratio of a new generation of HY high efficiency blades; the friction transmission to synchronous transmission. After the transformation, the temperature dropped 3 ~ 4 ℃ after cooling, the recirculation hydrogen compressor steam consumption decreased 0.5t / h, and the payback period was only 4 months.