CAJ | 학술논문

在3×300 mL的固定床加氢装置上，以劣质的催化裂化柴油为原料，在氢分压12 MPa、体积空速0.5 h－1、氢？油体积比800∶1的条件下，考察了反应温度对劣质柴油加氢精制效果的影响；并进一步研究了原料油及加氢精制生成油的窄馏分中烃族组成随馏程的变化规律。结果表明，在反应温度为370℃时，加氢精制效果较好，加氢精制生成油的密度（20℃）为0.8651 g？cm3，硫质量分数仅为27.51"g？g，总芳烃脱除率达79.2％，十六烷指数提高15个单位；精制后的各窄馏分中双环及三环芳烃脱除率高达92％以上，而大多数单环芳烃与三环环烷烃集中在285～350℃馏分中，因此降低劣质柴油的密度、提高十六烷指数的关键是需要将该馏分段进一步加氢改质。
재3×300 mL적고정상가경장치상，이렬질적최화열화시유위원료，재경분압12 MPa、체적공속0.5 h－1、경？유체적비800∶1적조건하，고찰료반응온도대렬질시유가경정제효과적영향；병진일보연구료원료유급가경정제생성유적착류분중경족조성수류정적변화규률。결과표명，재반응온도위370℃시，가경정제효과교호，가경정제생성유적밀도（20℃）위0.8651 g？cm3，류질량분수부위27.51"g？g，총방경탈제솔체79.2％，십륙완지수제고15개단위；정제후적각착류분중쌍배급삼배방경탈제솔고체92％이상，이대다수단배방경여삼배배완경집중재285～350℃류분중，인차강저렬질시유적밀도、제고십륙완지수적관건시수요장해류분단진일보가경개질。
The influence of hydrotreating temperature on the inferior FCC diesel was investigated at 12.0 MPa,volume space velocity of 0.5 h-1 and hydrogen to oil volume ratio of 800 in a three 300 mL hydrogenation fixed bed in series.Raw material oil and the hydrotreated diesel oil were cut into narrow fractions,and the variation of hydrocarbon group compositions of the narrow fractions with distillation range was studied.The results show that at the optimum hydrotreating temperature of 370 ℃,the den-sity of hydrotreated diesel is 0.865 1 g?cm3 ,the sulfur and the total aromatics content are 27.51 "g?g and 12.8%,respectively and the cetane index increases 15 units.Over 92% of bicyclic and tricyclic aromatic hydrocarbon of every narrow fraction is removed.It is found that most of single-ring aromatics and tri-cyclic naphthenic is concentrated in 285—350 ℃ fraction range,which is required further hydro-upgra-ding to reduce the density and improve cetane number of inferior diesel.