摘要
洛阳石化1400kt/a延迟焦化装置由工艺生产和石油焦处理两大部分组成,分为8个生产单元。结合热力学第一定律和第二定律,从能量的数量和质量结合的角度出发,对该装置加热炉、换热器和空冷器进行有效能分析、计算,揭示了能量中的有效能在装置或设备中的转换、传递、利用和损失情况,从而获得单元换热设备的节能和改进措施。研究表明,延迟焦化装置主要用能设备中,有效能损失率较大的有加热炉F1101、空冷器A1121A^H,以及换热器E1120A/B、空冷器A1401A^H、换热器E1119A/B、换热器E1208。加热炉热负荷对装置能耗影响最大,占总热负荷的33.07%,是装置第一用能大户,装置节能工作应围绕提高加热炉热效率入手。空冷器A1115A^H、A1121A^H有效能利用效率均低于40%,热物流入口温度分别为118℃和140℃,应回收这部分低温热。
Sinopec Luoyang Company＇s 1400kt/a delayed coking unit consists of process production and petroleum coke processing sections,with a total of eight production units.Based on the first and second laws of thermo- dynamics and by considering both the quantity and quality of energy ,this article analyzes and computes use- ful energy for heating furnaces ,heat exchangers and air coolers to reveal the conversion,transfer,use and loss of useful energy in total energy in units and equipment.The results of analysis can help researchers develop energy-saving and improvement measures for unit heat exchangers.Study shows that the main energy con- sumers of the delayed coking unit with high rates of loss of useful energy include heating furnace F1101 ,air coolers A1121A-H,heat exchangers E1120A and B,air coolers A1401A-H,heat exchangers E119A and B and heat exchanger E1208.The heat load of the heating furnace has the biggest influence on the delayed coking unit＇s energy consumption,which represents 33.07% of the unit＇s total heat load.The heating furnace is therefore the largest energy consumer in the delayed coking unit.The effort to raise energy efficiency for the delayed coking unit should be focused on raising the heat efficiency of the heating furnace.The utilization rates of useful energy in air coolers AlllSA-H and All21A-H are both lower than 40% and the temperatures at the inlets for hot materials are 118℃ and 140℃ respectively.This low-temperature heat should be recovered.
出处
《中外能源》
CAS
2013年第3期85-88,共4页
Sino-Global Energy
关键词
延迟焦化
能耗
有效能
节能措施
delayed coking
energy consumption
useful energy
energy-saving measures
