加氢装置降低柴汽比的优化措施

摘要

在柴油消费市场需求不旺的形势下,国内某炼油厂通过优化加氢类装置生产方案,降低全厂柴汽比,取得了较好的效果.其中,对煤油加氢装置进行扩能改造,增产喷气燃料0.4 Mt/a;优化柴油加氢装置分馏系统流程,增加侧线抽出,增产汽油调合组分0.3 Mt/a;蜡油加氢装置分馏塔停止柴油侧线抽出,通过增加催化裂化原料增产汽油0.06 Mt/a;加氢裂化装置通过优化生产方案,增产汽油组分0.22 Mt/a.通过以上措施的实施,实现加氢类装置助力全厂柴汽比从1.23降至0.83,提高了炼油厂的经济效益.%In the face of weak diesel market,a refinery reduced the diesel over gasoline ratio through optimization of the production schedule of hydrogenation units.Among of them,the kerosene hydrofining unit was expanded to increase jet fuel production of 0.4 Mt/a;the fractionation system of diesel hydrogenation unit was optimized to yield 0.3 Mt/a gasoline blending component by drawing out more side stream;through stopping diesel side stream drawn out,all VGO hydrotreated diesel fractions were sent to FCC unit as feed to increase 0.06 Mt/a gasoline;optimization of hydrocracking unit increased another gasoline component 0.22 Mt/a.These measures reduced the diesel/gasoline ratio from 1.23 to 0.83 and improved the economic benefit of the refinery.