芳烃联合装置在新形势下的运行优化

随着催化重整(简称重整)装置恢复高负荷运行、增产氢气以满足加氢装置提负荷需要,重整生成油产量增加,同时化工化纤市场低迷,中国石化洛阳分公司芳烃联合装置采用"抽提高负荷、对二甲苯低负荷"运行模式,重整生成油预分馏单元、液液抽提单元等高负荷运行,二甲苯装置歧化单元停运,异构化单元、二甲苯分馏单元和吸附分离单元低负荷运行;优...

OPERATION OPTIMIZATION OF AROMATIC COMPLEX UNIT

As the high-load operation of the reforming unit was resumed to increase hydrogen production to meet the demand of hydrogenation unit, and the output of reformate oil also increased. At the same time, as the chemical and chemical fiber market was in a downturn, the aromatics complex unit of SINOPEC Luoyang Company adopted the operation mode of "pumping up extraction load and lowering load of p-xylene":The reformate pre-fractionation unit and liquid-liquid extraction unit operated at high load, while the disproportionation unit of xylene unit was stopped; and the isomerization unit, xylene fractionation unit and adsorption separation unit operated with low load; optimizing the processing mode of the extraction unit inside the plate and the toluene production process, shutting down the o-xylene tower, optimizing the C₈ aromatics external rejection process and the operation parameters of the heavy aromatics tower. By comprehensive adopting the above measures, the energy consumption and material consumption of the aromatics complex unit were effectively reduced, and the monthly cost reduction and efficiency increase were realized by 1.82 million Yuan per month.