CAJ | 학술논문

以焦化轻油为原料，通过精馏脱除苯，预加氢采用NiMo/γ-Al2O3脱除不饱和组分，主加氢在CoMo/γ-Al2O3作用下完成脱硫来制备高辛烷值汽油调和组分。比较了先精馏后加氢和先加氢后精馏两种工艺对产品中苯、硫含量和辛烷值的影响，确定了最佳工艺。在此基础上，探讨了工艺参数对加氢脱硫的影响，最优的工艺条件为：温度300℃、压力3.0 MPa、氢油比900∶1、液体空速0.4 h-1。在此工艺条件下脱硫率为98.73%，产物中苯含量0.96%和硫含量36 mg/kg均符合车用汽油国家标准Ⅳ的要求；此外，加氢产品的氮含量为87 mg/kg，溴价为0.45，辛烷值达112.1，焦化轻油经本工艺处理后可作为高芳高辛烷值汽油调和组分。
이초화경유위원료，통과정류탈제분，예가경채용NiMo/γ-Al2O3탈제불포화조분，주가경재CoMo/γ-Al2O3작용하완성탈류래제비고신완치기유조화조분。비교료선정류후가경화선가경후정류량충공예대산품중분、류함량화신완치적영향，학정료최가공예。재차기출상，탐토료공예삼수대가경탈류적영향，최우적공예조건위：온도300℃、압력3.0 MPa、경유비900∶1、액체공속0.4 h-1。재차공예조건하탈류솔위98.73%，산물중분함량0.96%화류함량36 mg/kg균부합차용기유국가표준Ⅳ적요구；차외，가경산품적담함량위87 mg/kg，추개위0.45，신완치체112.1，초화경유경본공예처리후가작위고방고신완치기유조화조분。
In order to prepare high octane gasoline blending component from light oil of coal tar, benzene , unsaturated hydrocarbons and sulfur components were removed by rectification , pre-hydrogenation on NiMo/γ-Al2O3 and hydrodesulfurization on CoMo/γ-Al2O3 respectively. The effects of two processes (rectification-hydrogenation and hydrogenation-rectification) on benzene, sulfur content and octane number in intermediates and product were compared,and the results indicated that the former was better and more effective. On this basis,the influences of process parameters on hydrodesulfurization were investigated,and the optimal technological conditions were as follows:temperature 300 ℃;pressure 3.0 MPa;H2/oil ratio 900∶1 and liquid hourly space velocity 0.4 h-1. Under the optimal conditions,desulfurization rate reached 98.73%,benzene content (0.96%) and sulfur content (36 mg/kg) completely met the requirements of motor gasoline national standard IV. Furthermore,the light oil of coal tar treated by the optimal process could be used as high-aromatic and high octane gasoline component,whose nitrogen content was 87 mg/kg,bromine number was 0.45 and octane number was up to 112.1.